./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/recursive/MultCommutative-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a31fd051 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/MultCommutative-2.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 ce29b37e076ab683230ebf17073db3b7759ea39570dd2ef64322b6d43bb636cd --- Real Ultimate output --- This is Ultimate 0.2.2-?-a31fd05 [2023-02-15 12:37:12,311 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-15 12:37:12,313 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-15 12:37:12,345 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-15 12:37:12,346 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-15 12:37:12,349 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-15 12:37:12,350 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-15 12:37:12,352 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-15 12:37:12,353 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-15 12:37:12,357 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-15 12:37:12,358 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-15 12:37:12,359 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-15 12:37:12,359 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-15 12:37:12,361 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-15 12:37:12,362 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-15 12:37:12,363 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-15 12:37:12,363 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-15 12:37:12,364 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-15 12:37:12,365 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-15 12:37:12,369 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-15 12:37:12,370 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-15 12:37:12,371 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-15 12:37:12,371 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-15 12:37:12,372 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-15 12:37:12,378 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-15 12:37:12,378 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-15 12:37:12,378 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-15 12:37:12,379 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-15 12:37:12,380 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-15 12:37:12,380 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-15 12:37:12,380 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-15 12:37:12,381 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-15 12:37:12,381 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-15 12:37:12,382 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-15 12:37:12,384 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-15 12:37:12,384 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-15 12:37:12,384 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-15 12:37:12,384 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-15 12:37:12,384 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-15 12:37:12,385 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-15 12:37:12,386 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-15 12:37:12,386 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-02-15 12:37:12,408 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-15 12:37:12,408 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-15 12:37:12,409 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-15 12:37:12,409 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-15 12:37:12,409 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-15 12:37:12,410 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-15 12:37:12,410 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-15 12:37:12,410 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-15 12:37:12,410 INFO L138 SettingsManager]: * Use SBE=true [2023-02-15 12:37:12,410 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-15 12:37:12,411 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-15 12:37:12,411 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-15 12:37:12,411 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-15 12:37:12,411 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-15 12:37:12,411 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-15 12:37:12,411 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-15 12:37:12,411 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-15 12:37:12,411 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-15 12:37:12,411 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-15 12:37:12,412 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-15 12:37:12,412 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-15 12:37:12,412 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-15 12:37:12,412 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-15 12:37:12,412 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-15 12:37:12,412 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-15 12:37:12,412 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-15 12:37:12,412 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-15 12:37:12,412 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-15 12:37:12,413 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-15 12:37:12,413 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-15 12:37:12,413 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-15 12:37:12,413 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-15 12:37:12,413 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-15 12:37:12,413 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-15 12:37:12,413 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-15 12:37:12,413 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ce29b37e076ab683230ebf17073db3b7759ea39570dd2ef64322b6d43bb636cd [2023-02-15 12:37:12,610 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-15 12:37:12,623 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-15 12:37:12,624 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-15 12:37:12,625 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-15 12:37:12,625 INFO L275 PluginConnector]: CDTParser initialized [2023-02-15 12:37:12,626 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursive/MultCommutative-2.c [2023-02-15 12:37:13,656 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-15 12:37:13,829 INFO L351 CDTParser]: Found 1 translation units. [2023-02-15 12:37:13,829 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive/MultCommutative-2.c [2023-02-15 12:37:13,833 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0b3795815/f1c8efafbbeb490397094048df4cdda3/FLAGefa0d33f8 [2023-02-15 12:37:14,249 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0b3795815/f1c8efafbbeb490397094048df4cdda3 [2023-02-15 12:37:14,251 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-15 12:37:14,252 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-15 12:37:14,254 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-15 12:37:14,254 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-15 12:37:14,257 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-15 12:37:14,257 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 12:37:14" (1/1) ... [2023-02-15 12:37:14,258 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@777d08ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:37:14, skipping insertion in model container [2023-02-15 12:37:14,258 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 12:37:14" (1/1) ... [2023-02-15 12:37:14,263 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-15 12:37:14,274 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-15 12:37:14,383 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/MultCommutative-2.c[970,983] [2023-02-15 12:37:14,386 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 12:37:14,394 INFO L203 MainTranslator]: Completed pre-run [2023-02-15 12:37:14,408 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/MultCommutative-2.c[970,983] [2023-02-15 12:37:14,409 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 12:37:14,421 INFO L208 MainTranslator]: Completed translation [2023-02-15 12:37:14,422 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:37:14 WrapperNode [2023-02-15 12:37:14,422 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-15 12:37:14,423 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-15 12:37:14,423 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-15 12:37:14,423 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-15 12:37:14,428 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:37:14" (1/1) ... [2023-02-15 12:37:14,434 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:37:14" (1/1) ... [2023-02-15 12:37:14,444 INFO L138 Inliner]: procedures = 13, calls = 11, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 36 [2023-02-15 12:37:14,445 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-15 12:37:14,445 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-15 12:37:14,446 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-15 12:37:14,446 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-15 12:37:14,452 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:37:14" (1/1) ... [2023-02-15 12:37:14,453 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:37:14" (1/1) ... [2023-02-15 12:37:14,461 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:37:14" (1/1) ... [2023-02-15 12:37:14,461 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:37:14" (1/1) ... [2023-02-15 12:37:14,465 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:37:14" (1/1) ... [2023-02-15 12:37:14,466 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:37:14" (1/1) ... [2023-02-15 12:37:14,467 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:37:14" (1/1) ... [2023-02-15 12:37:14,467 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:37:14" (1/1) ... [2023-02-15 12:37:14,468 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-15 12:37:14,469 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-15 12:37:14,469 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-15 12:37:14,469 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-15 12:37:14,470 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:37:14" (1/1) ... [2023-02-15 12:37:14,474 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-15 12:37:14,482 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 12:37:14,500 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) [2023-02-15 12:37:14,509 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 [2023-02-15 12:37:14,533 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-15 12:37:14,539 INFO L130 BoogieDeclarations]: Found specification of procedure mult [2023-02-15 12:37:14,539 INFO L138 BoogieDeclarations]: Found implementation of procedure mult [2023-02-15 12:37:14,540 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-15 12:37:14,540 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-15 12:37:14,540 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-15 12:37:14,580 INFO L235 CfgBuilder]: Building ICFG [2023-02-15 12:37:14,582 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-15 12:37:14,666 INFO L276 CfgBuilder]: Performing block encoding [2023-02-15 12:37:14,670 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-15 12:37:14,670 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2023-02-15 12:37:14,671 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 12:37:14 BoogieIcfgContainer [2023-02-15 12:37:14,671 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-15 12:37:14,673 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-15 12:37:14,673 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-15 12:37:14,675 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-15 12:37:14,675 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.02 12:37:14" (1/3) ... [2023-02-15 12:37:14,676 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f550be8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 12:37:14, skipping insertion in model container [2023-02-15 12:37:14,676 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:37:14" (2/3) ... [2023-02-15 12:37:14,676 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f550be8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 12:37:14, skipping insertion in model container [2023-02-15 12:37:14,676 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 12:37:14" (3/3) ... [2023-02-15 12:37:14,677 INFO L112 eAbstractionObserver]: Analyzing ICFG MultCommutative-2.c [2023-02-15 12:37:14,688 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-15 12:37:14,689 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-02-15 12:37:14,722 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-15 12:37:14,727 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;@2ab2f3a3, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-15 12:37:14,727 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-02-15 12:37:14,729 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 16 states have (on average 1.375) internal successors, (22), 17 states have internal predecessors, (22), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-02-15 12:37:14,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-02-15 12:37:14,734 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 12:37:14,735 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 12:37:14,735 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 12:37:14,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 12:37:14,738 INFO L85 PathProgramCache]: Analyzing trace with hash -1513944532, now seen corresponding path program 1 times [2023-02-15 12:37:14,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 12:37:14,744 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354486902] [2023-02-15 12:37:14,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 12:37:14,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 12:37:14,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:14,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 12:37:14,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:15,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-02-15 12:37:15,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:15,061 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-02-15 12:37:15,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 12:37:15,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354486902] [2023-02-15 12:37:15,062 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1354486902] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 12:37:15,062 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 12:37:15,063 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-02-15 12:37:15,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651049877] [2023-02-15 12:37:15,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 12:37:15,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-02-15 12:37:15,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 12:37:15,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-02-15 12:37:15,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-02-15 12:37:15,099 INFO L87 Difference]: Start difference. First operand has 23 states, 16 states have (on average 1.375) internal successors, (22), 17 states have internal predecessors, (22), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 7 states, 6 states have (on average 2.0) internal successors, (12), 5 states have internal predecessors, (12), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-15 12:37:15,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 12:37:15,173 INFO L93 Difference]: Finished difference Result 44 states and 55 transitions. [2023-02-15 12:37:15,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-15 12:37:15,174 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.0) internal successors, (12), 5 states have internal predecessors, (12), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 20 [2023-02-15 12:37:15,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 12:37:15,179 INFO L225 Difference]: With dead ends: 44 [2023-02-15 12:37:15,179 INFO L226 Difference]: Without dead ends: 28 [2023-02-15 12:37:15,181 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-02-15 12:37:15,183 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 13 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 12:37:15,184 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 151 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 12:37:15,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2023-02-15 12:37:15,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 24. [2023-02-15 12:37:15,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 16 states have (on average 1.125) internal successors, (18), 17 states have internal predecessors, (18), 5 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) [2023-02-15 12:37:15,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 32 transitions. [2023-02-15 12:37:15,222 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 32 transitions. Word has length 20 [2023-02-15 12:37:15,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 12:37:15,222 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 32 transitions. [2023-02-15 12:37:15,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.0) internal successors, (12), 5 states have internal predecessors, (12), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-15 12:37:15,223 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 32 transitions. [2023-02-15 12:37:15,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-02-15 12:37:15,224 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 12:37:15,224 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 12:37:15,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-02-15 12:37:15,225 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 12:37:15,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 12:37:15,225 INFO L85 PathProgramCache]: Analyzing trace with hash 555960324, now seen corresponding path program 1 times [2023-02-15 12:37:15,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 12:37:15,226 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965377062] [2023-02-15 12:37:15,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 12:37:15,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 12:37:15,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:15,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 12:37:15,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:15,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-02-15 12:37:15,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:15,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-15 12:37:15,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:15,443 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-15 12:37:15,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 12:37:15,443 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965377062] [2023-02-15 12:37:15,443 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [965377062] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 12:37:15,444 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1227681617] [2023-02-15 12:37:15,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 12:37:15,444 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 12:37:15,444 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 12:37:15,454 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) [2023-02-15 12:37:15,480 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-15 12:37:15,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:15,529 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-15 12:37:15,533 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 12:37:15,605 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-02-15 12:37:15,606 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 12:37:15,747 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-02-15 12:37:15,751 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1227681617] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 12:37:15,751 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 12:37:15,751 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 5, 5] total 13 [2023-02-15 12:37:15,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274757720] [2023-02-15 12:37:15,754 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 12:37:15,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-02-15 12:37:15,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 12:37:15,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-02-15 12:37:15,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2023-02-15 12:37:15,759 INFO L87 Difference]: Start difference. First operand 24 states and 32 transitions. Second operand has 13 states, 11 states have (on average 2.909090909090909) internal successors, (32), 11 states have internal predecessors, (32), 4 states have call successors, (5), 1 states have call predecessors, (5), 4 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2023-02-15 12:37:15,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 12:37:15,915 INFO L93 Difference]: Finished difference Result 52 states and 83 transitions. [2023-02-15 12:37:15,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-02-15 12:37:15,915 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 2.909090909090909) internal successors, (32), 11 states have internal predecessors, (32), 4 states have call successors, (5), 1 states have call predecessors, (5), 4 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) Word has length 26 [2023-02-15 12:37:15,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 12:37:15,916 INFO L225 Difference]: With dead ends: 52 [2023-02-15 12:37:15,917 INFO L226 Difference]: Without dead ends: 27 [2023-02-15 12:37:15,917 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 54 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=57, Invalid=249, Unknown=0, NotChecked=0, Total=306 [2023-02-15 12:37:15,918 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 15 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 187 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 12:37:15,919 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 113 Invalid, 195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 187 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 12:37:15,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2023-02-15 12:37:15,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 25. [2023-02-15 12:37:15,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 18 states have internal predecessors, (19), 4 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2023-02-15 12:37:15,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 31 transitions. [2023-02-15 12:37:15,924 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 31 transitions. Word has length 26 [2023-02-15 12:37:15,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 12:37:15,924 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 31 transitions. [2023-02-15 12:37:15,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 2.909090909090909) internal successors, (32), 11 states have internal predecessors, (32), 4 states have call successors, (5), 1 states have call predecessors, (5), 4 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2023-02-15 12:37:15,925 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 31 transitions. [2023-02-15 12:37:15,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-02-15 12:37:15,926 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 12:37:15,926 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 12:37:15,935 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-02-15 12:37:16,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 12:37:16,132 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 12:37:16,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 12:37:16,132 INFO L85 PathProgramCache]: Analyzing trace with hash 2011031750, now seen corresponding path program 1 times [2023-02-15 12:37:16,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 12:37:16,133 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83432232] [2023-02-15 12:37:16,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 12:37:16,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 12:37:16,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:16,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 12:37:16,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:16,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:37:16,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:16,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-02-15 12:37:16,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:16,208 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-02-15 12:37:16,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 12:37:16,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83432232] [2023-02-15 12:37:16,208 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [83432232] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 12:37:16,209 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 12:37:16,209 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-15 12:37:16,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482444958] [2023-02-15 12:37:16,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 12:37:16,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-15 12:37:16,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 12:37:16,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-15 12:37:16,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-15 12:37:16,210 INFO L87 Difference]: Start difference. First operand 25 states and 31 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-02-15 12:37:16,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 12:37:16,238 INFO L93 Difference]: Finished difference Result 31 states and 37 transitions. [2023-02-15 12:37:16,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-15 12:37:16,239 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 27 [2023-02-15 12:37:16,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 12:37:16,240 INFO L225 Difference]: With dead ends: 31 [2023-02-15 12:37:16,240 INFO L226 Difference]: Without dead ends: 27 [2023-02-15 12:37:16,240 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-02-15 12:37:16,241 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 8 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 12:37:16,242 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 43 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 12:37:16,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2023-02-15 12:37:16,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2023-02-15 12:37:16,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 20 states have internal predecessors, (20), 4 states have call successors, (4), 1 states have call predecessors, (4), 4 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2023-02-15 12:37:16,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 32 transitions. [2023-02-15 12:37:16,246 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 32 transitions. Word has length 27 [2023-02-15 12:37:16,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 12:37:16,246 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 32 transitions. [2023-02-15 12:37:16,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-02-15 12:37:16,247 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 32 transitions. [2023-02-15 12:37:16,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-02-15 12:37:16,247 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 12:37:16,248 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 12:37:16,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-02-15 12:37:16,256 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 12:37:16,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 12:37:16,256 INFO L85 PathProgramCache]: Analyzing trace with hash -760266050, now seen corresponding path program 2 times [2023-02-15 12:37:16,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 12:37:16,257 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080603188] [2023-02-15 12:37:16,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 12:37:16,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 12:37:16,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:16,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 12:37:16,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:16,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:37:16,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:16,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-02-15 12:37:16,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:16,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:37:16,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:16,597 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 3 proven. 19 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-02-15 12:37:16,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 12:37:16,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080603188] [2023-02-15 12:37:16,598 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1080603188] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 12:37:16,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1094602879] [2023-02-15 12:37:16,598 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-15 12:37:16,598 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 12:37:16,598 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 12:37:16,599 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) [2023-02-15 12:37:16,629 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-02-15 12:37:16,661 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-15 12:37:16,662 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 12:37:16,663 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 49 conjunts are in the unsatisfiable core [2023-02-15 12:37:16,665 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 12:37:16,909 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 1 proven. 15 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-02-15 12:37:16,910 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 12:37:17,435 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 8 proven. 14 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-02-15 12:37:17,436 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1094602879] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 12:37:17,436 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 12:37:17,436 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 12, 15] total 33 [2023-02-15 12:37:17,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60357920] [2023-02-15 12:37:17,436 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 12:37:17,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-02-15 12:37:17,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 12:37:17,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-02-15 12:37:17,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=957, Unknown=0, NotChecked=0, Total=1056 [2023-02-15 12:37:17,438 INFO L87 Difference]: Start difference. First operand 27 states and 32 transitions. Second operand has 33 states, 30 states have (on average 1.4666666666666666) internal successors, (44), 22 states have internal predecessors, (44), 7 states have call successors, (7), 1 states have call predecessors, (7), 7 states have return successors, (11), 11 states have call predecessors, (11), 7 states have call successors, (11) [2023-02-15 12:37:17,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 12:37:17,874 INFO L93 Difference]: Finished difference Result 53 states and 69 transitions. [2023-02-15 12:37:17,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-02-15 12:37:17,875 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 30 states have (on average 1.4666666666666666) internal successors, (44), 22 states have internal predecessors, (44), 7 states have call successors, (7), 1 states have call predecessors, (7), 7 states have return successors, (11), 11 states have call predecessors, (11), 7 states have call successors, (11) Word has length 34 [2023-02-15 12:37:17,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 12:37:17,876 INFO L225 Difference]: With dead ends: 53 [2023-02-15 12:37:17,876 INFO L226 Difference]: Without dead ends: 45 [2023-02-15 12:37:17,877 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 52 SyntacticMatches, 4 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 359 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=221, Invalid=1759, Unknown=0, NotChecked=0, Total=1980 [2023-02-15 12:37:17,877 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 53 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 565 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 598 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 565 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-15 12:37:17,878 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 172 Invalid, 598 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 565 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-15 12:37:17,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2023-02-15 12:37:17,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 37. [2023-02-15 12:37:17,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 24 states have (on average 1.0833333333333333) internal successors, (26), 26 states have internal predecessors, (26), 6 states have call successors, (6), 1 states have call predecessors, (6), 6 states have return successors, (21), 9 states have call predecessors, (21), 6 states have call successors, (21) [2023-02-15 12:37:17,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 53 transitions. [2023-02-15 12:37:17,884 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 53 transitions. Word has length 34 [2023-02-15 12:37:17,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 12:37:17,885 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 53 transitions. [2023-02-15 12:37:17,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 30 states have (on average 1.4666666666666666) internal successors, (44), 22 states have internal predecessors, (44), 7 states have call successors, (7), 1 states have call predecessors, (7), 7 states have return successors, (11), 11 states have call predecessors, (11), 7 states have call successors, (11) [2023-02-15 12:37:17,885 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 53 transitions. [2023-02-15 12:37:17,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-02-15 12:37:17,886 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 12:37:17,886 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 12:37:17,893 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-02-15 12:37:18,089 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 [2023-02-15 12:37:18,089 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 12:37:18,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 12:37:18,090 INFO L85 PathProgramCache]: Analyzing trace with hash -757286924, now seen corresponding path program 1 times [2023-02-15 12:37:18,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 12:37:18,090 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482676524] [2023-02-15 12:37:18,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 12:37:18,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 12:37:18,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:18,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 12:37:18,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:18,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:37:18,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:18,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-02-15 12:37:18,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:18,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:37:18,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:18,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-15 12:37:18,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:18,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:37:18,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:18,193 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 26 proven. 5 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-02-15 12:37:18,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 12:37:18,194 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482676524] [2023-02-15 12:37:18,194 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [482676524] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 12:37:18,194 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2027013197] [2023-02-15 12:37:18,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 12:37:18,194 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 12:37:18,194 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 12:37:18,223 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) [2023-02-15 12:37:18,237 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-02-15 12:37:18,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:18,273 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 6 conjunts are in the unsatisfiable core [2023-02-15 12:37:18,276 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 12:37:18,306 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 25 proven. 9 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2023-02-15 12:37:18,306 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 12:37:18,410 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 25 proven. 10 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2023-02-15 12:37:18,410 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2027013197] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 12:37:18,411 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 12:37:18,411 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 7] total 12 [2023-02-15 12:37:18,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273488945] [2023-02-15 12:37:18,411 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 12:37:18,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-02-15 12:37:18,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 12:37:18,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-02-15 12:37:18,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-02-15 12:37:18,412 INFO L87 Difference]: Start difference. First operand 37 states and 53 transitions. Second operand has 12 states, 10 states have (on average 3.5) internal successors, (35), 12 states have internal predecessors, (35), 6 states have call successors, (8), 1 states have call predecessors, (8), 4 states have return successors, (9), 5 states have call predecessors, (9), 6 states have call successors, (9) [2023-02-15 12:37:18,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 12:37:18,471 INFO L93 Difference]: Finished difference Result 57 states and 80 transitions. [2023-02-15 12:37:18,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-15 12:37:18,471 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 3.5) internal successors, (35), 12 states have internal predecessors, (35), 6 states have call successors, (8), 1 states have call predecessors, (8), 4 states have return successors, (9), 5 states have call predecessors, (9), 6 states have call successors, (9) Word has length 47 [2023-02-15 12:37:18,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 12:37:18,473 INFO L225 Difference]: With dead ends: 57 [2023-02-15 12:37:18,473 INFO L226 Difference]: Without dead ends: 23 [2023-02-15 12:37:18,476 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 98 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2023-02-15 12:37:18,476 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 16 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 12:37:18,477 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 61 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 12:37:18,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2023-02-15 12:37:18,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2023-02-15 12:37:18,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 16 states have (on average 1.0625) internal successors, (17), 17 states have internal predecessors, (17), 3 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2023-02-15 12:37:18,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2023-02-15 12:37:18,481 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 47 [2023-02-15 12:37:18,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 12:37:18,482 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2023-02-15 12:37:18,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 3.5) internal successors, (35), 12 states have internal predecessors, (35), 6 states have call successors, (8), 1 states have call predecessors, (8), 4 states have return successors, (9), 5 states have call predecessors, (9), 6 states have call successors, (9) [2023-02-15 12:37:18,482 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2023-02-15 12:37:18,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2023-02-15 12:37:18,486 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 12:37:18,486 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 12:37:18,492 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-02-15 12:37:18,691 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 [2023-02-15 12:37:18,692 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 12:37:18,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 12:37:18,692 INFO L85 PathProgramCache]: Analyzing trace with hash 1519724908, now seen corresponding path program 3 times [2023-02-15 12:37:18,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 12:37:18,692 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259994671] [2023-02-15 12:37:18,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 12:37:18,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 12:37:18,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:18,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 12:37:18,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:18,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:37:18,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:19,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:37:19,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:19,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-02-15 12:37:19,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:19,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:37:19,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:19,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:37:19,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:19,131 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 10 proven. 42 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2023-02-15 12:37:19,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 12:37:19,132 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259994671] [2023-02-15 12:37:19,132 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [259994671] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 12:37:19,132 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [24386045] [2023-02-15 12:37:19,132 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-15 12:37:19,133 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 12:37:19,133 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 12:37:19,151 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) [2023-02-15 12:37:19,152 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-02-15 12:37:19,201 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2023-02-15 12:37:19,202 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 12:37:19,203 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 73 conjunts are in the unsatisfiable core [2023-02-15 12:37:19,204 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 12:37:19,564 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 2 proven. 42 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2023-02-15 12:37:19,565 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 12:37:20,369 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 11 proven. 51 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-02-15 12:37:20,369 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [24386045] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 12:37:20,369 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 12:37:20,369 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14, 18] total 36 [2023-02-15 12:37:20,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712380] [2023-02-15 12:37:20,369 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 12:37:20,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2023-02-15 12:37:20,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 12:37:20,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2023-02-15 12:37:20,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=1132, Unknown=0, NotChecked=0, Total=1260 [2023-02-15 12:37:20,371 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand has 36 states, 32 states have (on average 1.5) internal successors, (48), 24 states have internal predecessors, (48), 9 states have call successors, (9), 1 states have call predecessors, (9), 7 states have return successors, (13), 12 states have call predecessors, (13), 9 states have call successors, (13) [2023-02-15 12:37:20,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 12:37:20,802 INFO L93 Difference]: Finished difference Result 36 states and 41 transitions. [2023-02-15 12:37:20,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-02-15 12:37:20,802 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 32 states have (on average 1.5) internal successors, (48), 24 states have internal predecessors, (48), 9 states have call successors, (9), 1 states have call predecessors, (9), 7 states have return successors, (13), 12 states have call predecessors, (13), 9 states have call successors, (13) Word has length 48 [2023-02-15 12:37:20,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 12:37:20,802 INFO L225 Difference]: With dead ends: 36 [2023-02-15 12:37:20,803 INFO L226 Difference]: Without dead ends: 26 [2023-02-15 12:37:20,803 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 88 SyntacticMatches, 4 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 556 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=276, Invalid=2076, Unknown=0, NotChecked=0, Total=2352 [2023-02-15 12:37:20,804 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 19 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 395 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 177 SdHoareTripleChecker+Invalid, 403 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 395 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-15 12:37:20,804 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 177 Invalid, 403 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 395 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-15 12:37:20,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2023-02-15 12:37:20,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2023-02-15 12:37:20,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 18 states have (on average 1.0555555555555556) internal successors, (19), 19 states have internal predecessors, (19), 3 states have call successors, (3), 1 states have call predecessors, (3), 4 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) [2023-02-15 12:37:20,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 28 transitions. [2023-02-15 12:37:20,807 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 28 transitions. Word has length 48 [2023-02-15 12:37:20,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 12:37:20,807 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 28 transitions. [2023-02-15 12:37:20,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 32 states have (on average 1.5) internal successors, (48), 24 states have internal predecessors, (48), 9 states have call successors, (9), 1 states have call predecessors, (9), 7 states have return successors, (13), 12 states have call predecessors, (13), 9 states have call successors, (13) [2023-02-15 12:37:20,807 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 28 transitions. [2023-02-15 12:37:20,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-02-15 12:37:20,808 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 12:37:20,808 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 6, 6, 6, 6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 12:37:20,814 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-02-15 12:37:21,012 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 [2023-02-15 12:37:21,012 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 12:37:21,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 12:37:21,013 INFO L85 PathProgramCache]: Analyzing trace with hash -826569506, now seen corresponding path program 4 times [2023-02-15 12:37:21,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 12:37:21,013 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789896089] [2023-02-15 12:37:21,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 12:37:21,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 12:37:21,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:21,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 12:37:21,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:21,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:37:21,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:21,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:37:21,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:21,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:37:21,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:21,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-02-15 12:37:21,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:21,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:37:21,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:21,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:37:21,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:21,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:37:21,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:21,581 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 18 proven. 82 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-02-15 12:37:21,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 12:37:21,581 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789896089] [2023-02-15 12:37:21,581 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [789896089] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 12:37:21,581 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1974796332] [2023-02-15 12:37:21,582 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-02-15 12:37:21,582 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 12:37:21,582 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 12:37:21,597 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) [2023-02-15 12:37:21,663 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-02-15 12:37:21,703 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-02-15 12:37:21,704 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 12:37:21,705 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 97 conjunts are in the unsatisfiable core [2023-02-15 12:37:21,707 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 12:37:22,095 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 3 proven. 81 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2023-02-15 12:37:22,095 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 12:37:23,357 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 14 proven. 112 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2023-02-15 12:37:23,358 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1974796332] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 12:37:23,358 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 12:37:23,358 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16, 21] total 42 [2023-02-15 12:37:23,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000679998] [2023-02-15 12:37:23,359 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 12:37:23,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2023-02-15 12:37:23,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 12:37:23,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2023-02-15 12:37:23,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=1570, Unknown=0, NotChecked=0, Total=1722 [2023-02-15 12:37:23,365 INFO L87 Difference]: Start difference. First operand 26 states and 28 transitions. Second operand has 42 states, 38 states have (on average 1.4736842105263157) internal successors, (56), 27 states have internal predecessors, (56), 10 states have call successors, (10), 1 states have call predecessors, (10), 9 states have return successors, (16), 15 states have call predecessors, (16), 10 states have call successors, (16) [2023-02-15 12:37:23,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 12:37:23,948 INFO L93 Difference]: Finished difference Result 39 states and 44 transitions. [2023-02-15 12:37:23,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-02-15 12:37:23,948 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 38 states have (on average 1.4736842105263157) internal successors, (56), 27 states have internal predecessors, (56), 10 states have call successors, (10), 1 states have call predecessors, (10), 9 states have return successors, (16), 15 states have call predecessors, (16), 10 states have call successors, (16) Word has length 62 [2023-02-15 12:37:23,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 12:37:23,949 INFO L225 Difference]: With dead ends: 39 [2023-02-15 12:37:23,949 INFO L226 Difference]: Without dead ends: 29 [2023-02-15 12:37:23,950 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 116 SyntacticMatches, 6 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 790 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=342, Invalid=2850, Unknown=0, NotChecked=0, Total=3192 [2023-02-15 12:37:23,950 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 20 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 538 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 218 SdHoareTripleChecker+Invalid, 544 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 538 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-15 12:37:23,950 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 218 Invalid, 544 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 538 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-15 12:37:23,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2023-02-15 12:37:23,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2023-02-15 12:37:23,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 20 states have (on average 1.05) internal successors, (21), 21 states have internal predecessors, (21), 3 states have call successors, (3), 1 states have call predecessors, (3), 5 states have return successors, (7), 6 states have call predecessors, (7), 3 states have call successors, (7) [2023-02-15 12:37:23,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 31 transitions. [2023-02-15 12:37:23,953 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 31 transitions. Word has length 62 [2023-02-15 12:37:23,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 12:37:23,953 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 31 transitions. [2023-02-15 12:37:23,953 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 38 states have (on average 1.4736842105263157) internal successors, (56), 27 states have internal predecessors, (56), 10 states have call successors, (10), 1 states have call predecessors, (10), 9 states have return successors, (16), 15 states have call predecessors, (16), 10 states have call successors, (16) [2023-02-15 12:37:23,953 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 31 transitions. [2023-02-15 12:37:23,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-02-15 12:37:23,954 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 12:37:23,954 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 8, 8, 8, 8, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 12:37:23,961 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-02-15 12:37:24,161 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 [2023-02-15 12:37:24,161 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 12:37:24,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 12:37:24,162 INFO L85 PathProgramCache]: Analyzing trace with hash -529248084, now seen corresponding path program 5 times [2023-02-15 12:37:24,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 12:37:24,162 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655185686] [2023-02-15 12:37:24,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 12:37:24,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 12:37:24,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:24,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 12:37:24,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:24,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:37:24,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:24,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:37:24,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:24,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:37:24,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:24,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:37:24,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:24,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-02-15 12:37:24,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:24,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:37:24,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:24,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:37:24,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:25,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:37:25,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:25,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:37:25,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:25,070 INFO L134 CoverageAnalysis]: Checked inductivity of 281 backedges. 26 proven. 134 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2023-02-15 12:37:25,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 12:37:25,071 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655185686] [2023-02-15 12:37:25,072 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1655185686] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 12:37:25,072 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2064110195] [2023-02-15 12:37:25,072 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-02-15 12:37:25,072 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 12:37:25,072 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 12:37:25,090 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) [2023-02-15 12:37:25,126 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-02-15 12:37:25,154 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2023-02-15 12:37:25,155 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 12:37:25,157 WARN L261 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 121 conjunts are in the unsatisfiable core [2023-02-15 12:37:25,162 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 12:37:25,649 INFO L134 CoverageAnalysis]: Checked inductivity of 281 backedges. 4 proven. 132 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-02-15 12:37:25,649 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 12:37:27,312 INFO L134 CoverageAnalysis]: Checked inductivity of 281 backedges. 17 proven. 197 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2023-02-15 12:37:27,312 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2064110195] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 12:37:27,312 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 12:37:27,312 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18, 24] total 48 [2023-02-15 12:37:27,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238226620] [2023-02-15 12:37:27,313 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 12:37:27,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2023-02-15 12:37:27,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 12:37:27,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2023-02-15 12:37:27,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=176, Invalid=2080, Unknown=0, NotChecked=0, Total=2256 [2023-02-15 12:37:27,315 INFO L87 Difference]: Start difference. First operand 29 states and 31 transitions. Second operand has 48 states, 44 states have (on average 1.4545454545454546) internal successors, (64), 30 states have internal predecessors, (64), 11 states have call successors, (11), 1 states have call predecessors, (11), 11 states have return successors, (19), 18 states have call predecessors, (19), 11 states have call successors, (19) [2023-02-15 12:37:27,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 12:37:27,964 INFO L93 Difference]: Finished difference Result 42 states and 47 transitions. [2023-02-15 12:37:27,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-02-15 12:37:27,965 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 44 states have (on average 1.4545454545454546) internal successors, (64), 30 states have internal predecessors, (64), 11 states have call successors, (11), 1 states have call predecessors, (11), 11 states have return successors, (19), 18 states have call predecessors, (19), 11 states have call successors, (19) Word has length 76 [2023-02-15 12:37:27,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 12:37:27,965 INFO L225 Difference]: With dead ends: 42 [2023-02-15 12:37:27,965 INFO L226 Difference]: Without dead ends: 32 [2023-02-15 12:37:27,966 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 144 SyntacticMatches, 8 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1058 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=412, Invalid=3748, Unknown=0, NotChecked=0, Total=4160 [2023-02-15 12:37:27,967 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 47 mSDsluCounter, 260 mSDsCounter, 0 mSdLazyCounter, 620 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 274 SdHoareTripleChecker+Invalid, 642 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 620 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-02-15 12:37:27,967 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 274 Invalid, 642 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 620 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-02-15 12:37:27,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2023-02-15 12:37:27,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2023-02-15 12:37:27,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 22 states have (on average 1.0454545454545454) internal successors, (23), 23 states have internal predecessors, (23), 3 states have call successors, (3), 1 states have call predecessors, (3), 6 states have return successors, (8), 7 states have call predecessors, (8), 3 states have call successors, (8) [2023-02-15 12:37:27,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 34 transitions. [2023-02-15 12:37:27,970 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 34 transitions. Word has length 76 [2023-02-15 12:37:27,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 12:37:27,972 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 34 transitions. [2023-02-15 12:37:27,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 44 states have (on average 1.4545454545454546) internal successors, (64), 30 states have internal predecessors, (64), 11 states have call successors, (11), 1 states have call predecessors, (11), 11 states have return successors, (19), 18 states have call predecessors, (19), 11 states have call successors, (19) [2023-02-15 12:37:27,972 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 34 transitions. [2023-02-15 12:37:27,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-02-15 12:37:27,974 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 12:37:27,974 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 10, 10, 10, 10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 12:37:27,993 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-02-15 12:37:28,179 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 [2023-02-15 12:37:28,179 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 12:37:28,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 12:37:28,180 INFO L85 PathProgramCache]: Analyzing trace with hash -495284482, now seen corresponding path program 6 times [2023-02-15 12:37:28,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 12:37:28,180 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703598108] [2023-02-15 12:37:28,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 12:37:28,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 12:37:28,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:28,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 12:37:28,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:28,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:37:28,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:28,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:37:28,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:28,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:37:28,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:28,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:37:28,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:28,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:37:28,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:28,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-02-15 12:37:28,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:29,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:37:29,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:29,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:37:29,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:29,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:37:29,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:29,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:37:29,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:29,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:37:29,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:29,192 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 34 proven. 198 refuted. 0 times theorem prover too weak. 188 trivial. 0 not checked. [2023-02-15 12:37:29,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 12:37:29,193 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703598108] [2023-02-15 12:37:29,193 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1703598108] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 12:37:29,193 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1293959212] [2023-02-15 12:37:29,193 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-02-15 12:37:29,193 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 12:37:29,193 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 12:37:29,194 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) [2023-02-15 12:37:29,197 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-02-15 12:37:29,256 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 14 check-sat command(s) [2023-02-15 12:37:29,256 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 12:37:29,258 WARN L261 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 144 conjunts are in the unsatisfiable core [2023-02-15 12:37:29,260 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 12:37:29,955 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 22 proven. 200 refuted. 0 times theorem prover too weak. 198 trivial. 0 not checked. [2023-02-15 12:37:29,955 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 12:37:32,610 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 23 proven. 309 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2023-02-15 12:37:32,610 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1293959212] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 12:37:32,610 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 12:37:32,610 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 24, 31] total 59 [2023-02-15 12:37:32,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559462620] [2023-02-15 12:37:32,612 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 12:37:32,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2023-02-15 12:37:32,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 12:37:32,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2023-02-15 12:37:32,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=235, Invalid=3187, Unknown=0, NotChecked=0, Total=3422 [2023-02-15 12:37:32,615 INFO L87 Difference]: Start difference. First operand 32 states and 34 transitions. Second operand has 59 states, 54 states have (on average 1.5) internal successors, (81), 38 states have internal predecessors, (81), 13 states have call successors, (13), 1 states have call predecessors, (13), 14 states have return successors, (24), 21 states have call predecessors, (24), 13 states have call successors, (24) [2023-02-15 12:37:33,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 12:37:33,354 INFO L93 Difference]: Finished difference Result 45 states and 50 transitions. [2023-02-15 12:37:33,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-02-15 12:37:33,354 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 54 states have (on average 1.5) internal successors, (81), 38 states have internal predecessors, (81), 13 states have call successors, (13), 1 states have call predecessors, (13), 14 states have return successors, (24), 21 states have call predecessors, (24), 13 states have call successors, (24) Word has length 90 [2023-02-15 12:37:33,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 12:37:33,359 INFO L225 Difference]: With dead ends: 45 [2023-02-15 12:37:33,360 INFO L226 Difference]: Without dead ends: 35 [2023-02-15 12:37:33,361 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 159 SyntacticMatches, 18 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1808 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=573, Invalid=5433, Unknown=0, NotChecked=0, Total=6006 [2023-02-15 12:37:33,363 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 70 mSDsluCounter, 272 mSDsCounter, 0 mSdLazyCounter, 713 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 288 SdHoareTripleChecker+Invalid, 748 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 713 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-02-15 12:37:33,363 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 288 Invalid, 748 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 713 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-02-15 12:37:33,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2023-02-15 12:37:33,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2023-02-15 12:37:33,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 24 states have (on average 1.0416666666666667) internal successors, (25), 25 states have internal predecessors, (25), 3 states have call successors, (3), 1 states have call predecessors, (3), 7 states have return successors, (9), 8 states have call predecessors, (9), 3 states have call successors, (9) [2023-02-15 12:37:33,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 37 transitions. [2023-02-15 12:37:33,382 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 37 transitions. Word has length 90 [2023-02-15 12:37:33,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 12:37:33,382 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 37 transitions. [2023-02-15 12:37:33,382 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 54 states have (on average 1.5) internal successors, (81), 38 states have internal predecessors, (81), 13 states have call successors, (13), 1 states have call predecessors, (13), 14 states have return successors, (24), 21 states have call predecessors, (24), 13 states have call successors, (24) [2023-02-15 12:37:33,383 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 37 transitions. [2023-02-15 12:37:33,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-02-15 12:37:33,387 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 12:37:33,387 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 12, 12, 12, 12, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 12:37:33,392 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-02-15 12:37:33,591 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 [2023-02-15 12:37:33,592 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 12:37:33,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 12:37:33,593 INFO L85 PathProgramCache]: Analyzing trace with hash 1413185516, now seen corresponding path program 7 times [2023-02-15 12:37:33,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 12:37:33,593 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316234874] [2023-02-15 12:37:33,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 12:37:33,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 12:37:33,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:33,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 12:37:33,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:34,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:37:34,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:34,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:37:34,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:34,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:37:34,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:34,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:37:34,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:34,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:37:34,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:34,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:37:34,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:34,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-02-15 12:37:34,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:34,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:37:34,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:34,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:37:34,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:34,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:37:34,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:34,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:37:34,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:34,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:37:34,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:34,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:37:34,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:34,767 INFO L134 CoverageAnalysis]: Checked inductivity of 587 backedges. 42 proven. 274 refuted. 0 times theorem prover too weak. 271 trivial. 0 not checked. [2023-02-15 12:37:34,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 12:37:34,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316234874] [2023-02-15 12:37:34,767 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1316234874] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 12:37:34,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1519188303] [2023-02-15 12:37:34,768 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-02-15 12:37:34,768 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 12:37:34,768 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 12:37:34,769 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) [2023-02-15 12:37:34,771 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-02-15 12:37:34,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:34,840 WARN L261 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 169 conjunts are in the unsatisfiable core [2023-02-15 12:37:34,844 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 12:37:35,573 INFO L134 CoverageAnalysis]: Checked inductivity of 587 backedges. 6 proven. 270 refuted. 0 times theorem prover too weak. 311 trivial. 0 not checked. [2023-02-15 12:37:35,573 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 12:37:38,323 INFO L134 CoverageAnalysis]: Checked inductivity of 587 backedges. 23 proven. 439 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2023-02-15 12:37:38,324 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1519188303] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 12:37:38,324 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 12:37:38,324 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 22, 30] total 60 [2023-02-15 12:37:38,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378234497] [2023-02-15 12:37:38,325 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 12:37:38,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2023-02-15 12:37:38,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 12:37:38,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2023-02-15 12:37:38,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=224, Invalid=3316, Unknown=0, NotChecked=0, Total=3540 [2023-02-15 12:37:38,329 INFO L87 Difference]: Start difference. First operand 35 states and 37 transitions. Second operand has 60 states, 56 states have (on average 1.4285714285714286) internal successors, (80), 36 states have internal predecessors, (80), 13 states have call successors, (13), 1 states have call predecessors, (13), 15 states have return successors, (25), 24 states have call predecessors, (25), 13 states have call successors, (25) [2023-02-15 12:37:39,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 12:37:39,167 INFO L93 Difference]: Finished difference Result 48 states and 53 transitions. [2023-02-15 12:37:39,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-02-15 12:37:39,168 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 56 states have (on average 1.4285714285714286) internal successors, (80), 36 states have internal predecessors, (80), 13 states have call successors, (13), 1 states have call predecessors, (13), 15 states have return successors, (25), 24 states have call predecessors, (25), 13 states have call successors, (25) Word has length 104 [2023-02-15 12:37:39,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 12:37:39,168 INFO L225 Difference]: With dead ends: 48 [2023-02-15 12:37:39,168 INFO L226 Difference]: Without dead ends: 38 [2023-02-15 12:37:39,170 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 291 GetRequests, 200 SyntacticMatches, 12 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1724 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=564, Invalid=5916, Unknown=0, NotChecked=0, Total=6480 [2023-02-15 12:37:39,170 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 100 mSDsluCounter, 263 mSDsCounter, 0 mSdLazyCounter, 600 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 280 SdHoareTripleChecker+Invalid, 650 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 600 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-02-15 12:37:39,170 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 280 Invalid, 650 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 600 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-02-15 12:37:39,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2023-02-15 12:37:39,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2023-02-15 12:37:39,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 26 states have (on average 1.0384615384615385) internal successors, (27), 27 states have internal predecessors, (27), 3 states have call successors, (3), 1 states have call predecessors, (3), 8 states have return successors, (10), 9 states have call predecessors, (10), 3 states have call successors, (10) [2023-02-15 12:37:39,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 40 transitions. [2023-02-15 12:37:39,174 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 40 transitions. Word has length 104 [2023-02-15 12:37:39,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 12:37:39,174 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 40 transitions. [2023-02-15 12:37:39,174 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 56 states have (on average 1.4285714285714286) internal successors, (80), 36 states have internal predecessors, (80), 13 states have call successors, (13), 1 states have call predecessors, (13), 15 states have return successors, (25), 24 states have call predecessors, (25), 13 states have call successors, (25) [2023-02-15 12:37:39,174 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 40 transitions. [2023-02-15 12:37:39,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2023-02-15 12:37:39,175 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 12:37:39,175 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 14, 14, 14, 14, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 12:37:39,180 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-02-15 12:37:39,375 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 [2023-02-15 12:37:39,376 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 12:37:39,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 12:37:39,376 INFO L85 PathProgramCache]: Analyzing trace with hash 1686718750, now seen corresponding path program 8 times [2023-02-15 12:37:39,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 12:37:39,377 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289134528] [2023-02-15 12:37:39,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 12:37:39,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 12:37:39,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:39,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 12:37:39,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:39,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:37:39,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:39,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:37:39,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:40,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:37:40,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:40,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:37:40,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:40,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:37:40,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:40,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:37:40,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:40,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:37:40,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:40,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-02-15 12:37:40,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:40,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:37:40,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:40,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:37:40,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:40,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:37:40,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:40,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:37:40,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:40,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:37:40,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:40,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:37:40,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:40,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:37:40,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:40,813 INFO L134 CoverageAnalysis]: Checked inductivity of 782 backedges. 50 proven. 362 refuted. 0 times theorem prover too weak. 370 trivial. 0 not checked. [2023-02-15 12:37:40,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 12:37:40,814 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289134528] [2023-02-15 12:37:40,814 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [289134528] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 12:37:40,814 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [717252459] [2023-02-15 12:37:40,814 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-15 12:37:40,814 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 12:37:40,814 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 12:37:40,815 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) [2023-02-15 12:37:40,858 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-02-15 12:37:40,927 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-15 12:37:40,927 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 12:37:40,929 WARN L261 TraceCheckSpWp]: Trace formula consists of 349 conjuncts, 193 conjunts are in the unsatisfiable core [2023-02-15 12:37:40,932 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 12:37:41,751 INFO L134 CoverageAnalysis]: Checked inductivity of 782 backedges. 7 proven. 357 refuted. 0 times theorem prover too weak. 418 trivial. 0 not checked. [2023-02-15 12:37:41,751 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 12:37:44,428 INFO L134 CoverageAnalysis]: Checked inductivity of 782 backedges. 26 proven. 596 refuted. 0 times theorem prover too weak. 160 trivial. 0 not checked. [2023-02-15 12:37:44,428 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [717252459] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 12:37:44,429 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 12:37:44,429 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 24, 33] total 66 [2023-02-15 12:37:44,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382286219] [2023-02-15 12:37:44,429 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 12:37:44,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2023-02-15 12:37:44,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 12:37:44,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2023-02-15 12:37:44,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=248, Invalid=4042, Unknown=0, NotChecked=0, Total=4290 [2023-02-15 12:37:44,432 INFO L87 Difference]: Start difference. First operand 38 states and 40 transitions. Second operand has 66 states, 62 states have (on average 1.4193548387096775) internal successors, (88), 39 states have internal predecessors, (88), 14 states have call successors, (14), 1 states have call predecessors, (14), 17 states have return successors, (28), 27 states have call predecessors, (28), 14 states have call successors, (28) [2023-02-15 12:37:45,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 12:37:45,478 INFO L93 Difference]: Finished difference Result 51 states and 56 transitions. [2023-02-15 12:37:45,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-02-15 12:37:45,478 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 62 states have (on average 1.4193548387096775) internal successors, (88), 39 states have internal predecessors, (88), 14 states have call successors, (14), 1 states have call predecessors, (14), 17 states have return successors, (28), 27 states have call predecessors, (28), 14 states have call successors, (28) Word has length 118 [2023-02-15 12:37:45,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 12:37:45,479 INFO L225 Difference]: With dead ends: 51 [2023-02-15 12:37:45,479 INFO L226 Difference]: Without dead ends: 41 [2023-02-15 12:37:45,481 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 329 GetRequests, 228 SyntacticMatches, 14 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2116 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=646, Invalid=7186, Unknown=0, NotChecked=0, Total=7832 [2023-02-15 12:37:45,481 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 57 mSDsluCounter, 406 mSDsCounter, 0 mSdLazyCounter, 972 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 424 SdHoareTripleChecker+Invalid, 1000 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 972 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-02-15 12:37:45,481 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 424 Invalid, 1000 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 972 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-02-15 12:37:45,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2023-02-15 12:37:45,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2023-02-15 12:37:45,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 28 states have (on average 1.0357142857142858) internal successors, (29), 29 states have internal predecessors, (29), 3 states have call successors, (3), 1 states have call predecessors, (3), 9 states have return successors, (11), 10 states have call predecessors, (11), 3 states have call successors, (11) [2023-02-15 12:37:45,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 43 transitions. [2023-02-15 12:37:45,486 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 43 transitions. Word has length 118 [2023-02-15 12:37:45,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 12:37:45,486 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 43 transitions. [2023-02-15 12:37:45,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 62 states have (on average 1.4193548387096775) internal successors, (88), 39 states have internal predecessors, (88), 14 states have call successors, (14), 1 states have call predecessors, (14), 17 states have return successors, (28), 27 states have call predecessors, (28), 14 states have call successors, (28) [2023-02-15 12:37:45,486 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 43 transitions. [2023-02-15 12:37:45,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-02-15 12:37:45,487 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 12:37:45,487 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 16, 16, 16, 16, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 12:37:45,507 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-02-15 12:37:45,687 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 [2023-02-15 12:37:45,687 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 12:37:45,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 12:37:45,688 INFO L85 PathProgramCache]: Analyzing trace with hash 80066348, now seen corresponding path program 9 times [2023-02-15 12:37:45,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 12:37:45,688 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713055560] [2023-02-15 12:37:45,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 12:37:45,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 12:37:45,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:46,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 12:37:46,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:46,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:37:46,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:46,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:37:46,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:46,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:37:46,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:46,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:37:46,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:46,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:37:46,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:46,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:37:46,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:46,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:37:46,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:46,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:37:46,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:47,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-02-15 12:37:47,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:47,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:37:47,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:47,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:37:47,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:47,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:37:47,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:47,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:37:47,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:47,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:37:47,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:47,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:37:47,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:47,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:37:47,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:47,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:37:47,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:47,598 INFO L134 CoverageAnalysis]: Checked inductivity of 1005 backedges. 58 proven. 462 refuted. 0 times theorem prover too weak. 485 trivial. 0 not checked. [2023-02-15 12:37:47,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 12:37:47,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713055560] [2023-02-15 12:37:47,598 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1713055560] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 12:37:47,599 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1282741298] [2023-02-15 12:37:47,599 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-15 12:37:47,599 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 12:37:47,599 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 12:37:47,621 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) [2023-02-15 12:37:47,647 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-02-15 12:37:47,763 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 21 check-sat command(s) [2023-02-15 12:37:47,764 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 12:37:47,767 WARN L261 TraceCheckSpWp]: Trace formula consists of 387 conjuncts, 217 conjunts are in the unsatisfiable core [2023-02-15 12:37:47,769 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 12:37:48,705 INFO L134 CoverageAnalysis]: Checked inductivity of 1005 backedges. 8 proven. 456 refuted. 0 times theorem prover too weak. 541 trivial. 0 not checked. [2023-02-15 12:37:48,706 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 12:37:52,953 INFO L134 CoverageAnalysis]: Checked inductivity of 1005 backedges. 29 proven. 777 refuted. 0 times theorem prover too weak. 199 trivial. 0 not checked. [2023-02-15 12:37:52,953 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1282741298] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 12:37:52,953 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 12:37:52,953 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 26, 36] total 72 [2023-02-15 12:37:52,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742999316] [2023-02-15 12:37:52,953 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 12:37:52,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 72 states [2023-02-15 12:37:52,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 12:37:52,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2023-02-15 12:37:52,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=272, Invalid=4840, Unknown=0, NotChecked=0, Total=5112 [2023-02-15 12:37:52,956 INFO L87 Difference]: Start difference. First operand 41 states and 43 transitions. Second operand has 72 states, 68 states have (on average 1.411764705882353) internal successors, (96), 42 states have internal predecessors, (96), 15 states have call successors, (15), 1 states have call predecessors, (15), 19 states have return successors, (31), 30 states have call predecessors, (31), 15 states have call successors, (31) [2023-02-15 12:37:53,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 12:37:53,810 INFO L93 Difference]: Finished difference Result 54 states and 59 transitions. [2023-02-15 12:37:53,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2023-02-15 12:37:53,810 INFO L78 Accepts]: Start accepts. Automaton has has 72 states, 68 states have (on average 1.411764705882353) internal successors, (96), 42 states have internal predecessors, (96), 15 states have call successors, (15), 1 states have call predecessors, (15), 19 states have return successors, (31), 30 states have call predecessors, (31), 15 states have call successors, (31) Word has length 132 [2023-02-15 12:37:53,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 12:37:53,811 INFO L225 Difference]: With dead ends: 54 [2023-02-15 12:37:53,811 INFO L226 Difference]: Without dead ends: 44 [2023-02-15 12:37:53,813 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 367 GetRequests, 256 SyntacticMatches, 16 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2546 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=732, Invalid=8580, Unknown=0, NotChecked=0, Total=9312 [2023-02-15 12:37:53,813 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 74 mSDsluCounter, 308 mSDsCounter, 0 mSdLazyCounter, 823 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 326 SdHoareTripleChecker+Invalid, 855 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 823 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-02-15 12:37:53,814 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 326 Invalid, 855 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 823 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-02-15 12:37:53,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2023-02-15 12:37:53,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2023-02-15 12:37:53,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 30 states have (on average 1.0333333333333334) internal successors, (31), 31 states have internal predecessors, (31), 3 states have call successors, (3), 1 states have call predecessors, (3), 10 states have return successors, (12), 11 states have call predecessors, (12), 3 states have call successors, (12) [2023-02-15 12:37:53,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 46 transitions. [2023-02-15 12:37:53,817 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 46 transitions. Word has length 132 [2023-02-15 12:37:53,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 12:37:53,817 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 46 transitions. [2023-02-15 12:37:53,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 72 states, 68 states have (on average 1.411764705882353) internal successors, (96), 42 states have internal predecessors, (96), 15 states have call successors, (15), 1 states have call predecessors, (15), 19 states have return successors, (31), 30 states have call predecessors, (31), 15 states have call successors, (31) [2023-02-15 12:37:53,817 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 46 transitions. [2023-02-15 12:37:53,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2023-02-15 12:37:53,818 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 12:37:53,818 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 18, 18, 18, 18, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 12:37:53,823 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-02-15 12:37:54,023 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 [2023-02-15 12:37:54,023 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 12:37:54,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 12:37:54,024 INFO L85 PathProgramCache]: Analyzing trace with hash 293911358, now seen corresponding path program 10 times [2023-02-15 12:37:54,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 12:37:54,024 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148018700] [2023-02-15 12:37:54,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 12:37:54,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 12:37:54,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:54,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 12:37:54,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:54,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:37:54,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:54,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:37:54,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:54,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:37:54,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:54,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:37:54,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:55,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:37:55,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:55,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:37:55,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:55,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:37:55,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:55,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:37:55,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:55,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:37:55,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:55,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-02-15 12:37:55,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:55,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:37:55,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:55,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:37:55,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:55,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:37:55,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:55,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:37:55,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:55,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:37:55,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:56,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:37:56,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:56,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:37:56,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:56,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:37:56,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:56,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:37:56,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:37:56,104 INFO L134 CoverageAnalysis]: Checked inductivity of 1256 backedges. 66 proven. 574 refuted. 0 times theorem prover too weak. 616 trivial. 0 not checked. [2023-02-15 12:37:56,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 12:37:56,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148018700] [2023-02-15 12:37:56,104 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [148018700] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 12:37:56,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [542041547] [2023-02-15 12:37:56,105 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-02-15 12:37:56,105 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 12:37:56,105 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 12:37:56,122 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) [2023-02-15 12:37:56,154 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-02-15 12:37:56,263 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-02-15 12:37:56,264 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 12:37:56,270 WARN L261 TraceCheckSpWp]: Trace formula consists of 425 conjuncts, 241 conjunts are in the unsatisfiable core [2023-02-15 12:37:56,273 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 12:37:57,405 INFO L134 CoverageAnalysis]: Checked inductivity of 1256 backedges. 9 proven. 567 refuted. 0 times theorem prover too weak. 680 trivial. 0 not checked. [2023-02-15 12:37:57,405 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 12:38:01,288 INFO L134 CoverageAnalysis]: Checked inductivity of 1256 backedges. 32 proven. 982 refuted. 0 times theorem prover too weak. 242 trivial. 0 not checked. [2023-02-15 12:38:01,288 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [542041547] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 12:38:01,288 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 12:38:01,288 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 28, 39] total 78 [2023-02-15 12:38:01,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186035300] [2023-02-15 12:38:01,289 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 12:38:01,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 78 states [2023-02-15 12:38:01,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 12:38:01,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2023-02-15 12:38:01,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=296, Invalid=5710, Unknown=0, NotChecked=0, Total=6006 [2023-02-15 12:38:01,292 INFO L87 Difference]: Start difference. First operand 44 states and 46 transitions. Second operand has 78 states, 74 states have (on average 1.4054054054054055) internal successors, (104), 45 states have internal predecessors, (104), 16 states have call successors, (16), 1 states have call predecessors, (16), 21 states have return successors, (34), 33 states have call predecessors, (34), 16 states have call successors, (34) [2023-02-15 12:38:02,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 12:38:02,249 INFO L93 Difference]: Finished difference Result 57 states and 62 transitions. [2023-02-15 12:38:02,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2023-02-15 12:38:02,249 INFO L78 Accepts]: Start accepts. Automaton has has 78 states, 74 states have (on average 1.4054054054054055) internal successors, (104), 45 states have internal predecessors, (104), 16 states have call successors, (16), 1 states have call predecessors, (16), 21 states have return successors, (34), 33 states have call predecessors, (34), 16 states have call successors, (34) Word has length 146 [2023-02-15 12:38:02,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 12:38:02,250 INFO L225 Difference]: With dead ends: 57 [2023-02-15 12:38:02,250 INFO L226 Difference]: Without dead ends: 47 [2023-02-15 12:38:02,251 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 405 GetRequests, 284 SyntacticMatches, 18 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3020 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=822, Invalid=10098, Unknown=0, NotChecked=0, Total=10920 [2023-02-15 12:38:02,252 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 116 mSDsluCounter, 584 mSDsCounter, 0 mSdLazyCounter, 1255 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 603 SdHoareTripleChecker+Invalid, 1312 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 1255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-02-15 12:38:02,252 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 603 Invalid, 1312 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 1255 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-02-15 12:38:02,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2023-02-15 12:38:02,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2023-02-15 12:38:02,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 32 states have (on average 1.03125) internal successors, (33), 33 states have internal predecessors, (33), 3 states have call successors, (3), 1 states have call predecessors, (3), 11 states have return successors, (13), 12 states have call predecessors, (13), 3 states have call successors, (13) [2023-02-15 12:38:02,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 49 transitions. [2023-02-15 12:38:02,258 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 49 transitions. Word has length 146 [2023-02-15 12:38:02,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 12:38:02,259 INFO L495 AbstractCegarLoop]: Abstraction has 47 states and 49 transitions. [2023-02-15 12:38:02,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 78 states, 74 states have (on average 1.4054054054054055) internal successors, (104), 45 states have internal predecessors, (104), 16 states have call successors, (16), 1 states have call predecessors, (16), 21 states have return successors, (34), 33 states have call predecessors, (34), 16 states have call successors, (34) [2023-02-15 12:38:02,259 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 49 transitions. [2023-02-15 12:38:02,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2023-02-15 12:38:02,261 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 12:38:02,261 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 20, 20, 20, 20, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 12:38:02,266 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-02-15 12:38:02,466 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 [2023-02-15 12:38:02,466 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 12:38:02,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 12:38:02,466 INFO L85 PathProgramCache]: Analyzing trace with hash -1024592276, now seen corresponding path program 11 times [2023-02-15 12:38:02,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 12:38:02,467 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672481115] [2023-02-15 12:38:02,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 12:38:02,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 12:38:02,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:38:02,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 12:38:02,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:38:03,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:38:03,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:38:03,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:38:03,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:38:03,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:38:03,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:38:03,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:38:03,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:38:03,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:38:03,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:38:03,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:38:03,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:38:03,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:38:03,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:38:03,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:38:03,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:38:03,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:38:03,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:38:03,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:38:03,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:38:04,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-02-15 12:38:04,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:38:04,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:38:04,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:38:04,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:38:04,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:38:04,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:38:04,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:38:04,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:38:04,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:38:04,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:38:04,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:38:04,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:38:04,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:38:04,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:38:04,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:38:04,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:38:04,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:38:04,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:38:04,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:38:04,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:38:04,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:38:04,814 INFO L134 CoverageAnalysis]: Checked inductivity of 1535 backedges. 74 proven. 698 refuted. 0 times theorem prover too weak. 763 trivial. 0 not checked. [2023-02-15 12:38:04,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 12:38:04,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672481115] [2023-02-15 12:38:04,815 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1672481115] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 12:38:04,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1611901721] [2023-02-15 12:38:04,815 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-02-15 12:38:04,815 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 12:38:04,815 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 12:38:04,829 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) [2023-02-15 12:38:04,829 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-02-15 12:38:04,982 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 25 check-sat command(s) [2023-02-15 12:38:04,982 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 12:38:04,987 WARN L261 TraceCheckSpWp]: Trace formula consists of 463 conjuncts, 265 conjunts are in the unsatisfiable core [2023-02-15 12:38:04,990 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 12:38:06,305 INFO L134 CoverageAnalysis]: Checked inductivity of 1535 backedges. 10 proven. 690 refuted. 0 times theorem prover too weak. 835 trivial. 0 not checked. [2023-02-15 12:38:06,306 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 12:38:11,186 INFO L134 CoverageAnalysis]: Checked inductivity of 1535 backedges. 35 proven. 1211 refuted. 0 times theorem prover too weak. 289 trivial. 0 not checked. [2023-02-15 12:38:11,186 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1611901721] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 12:38:11,186 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 12:38:11,187 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 30, 42] total 84 [2023-02-15 12:38:11,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586103267] [2023-02-15 12:38:11,187 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 12:38:11,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 84 states [2023-02-15 12:38:11,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 12:38:11,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2023-02-15 12:38:11,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=320, Invalid=6652, Unknown=0, NotChecked=0, Total=6972 [2023-02-15 12:38:11,188 INFO L87 Difference]: Start difference. First operand 47 states and 49 transitions. Second operand has 84 states, 80 states have (on average 1.4) internal successors, (112), 48 states have internal predecessors, (112), 17 states have call successors, (17), 1 states have call predecessors, (17), 23 states have return successors, (37), 36 states have call predecessors, (37), 17 states have call successors, (37) [2023-02-15 12:38:12,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 12:38:12,167 INFO L93 Difference]: Finished difference Result 60 states and 65 transitions. [2023-02-15 12:38:12,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2023-02-15 12:38:12,167 INFO L78 Accepts]: Start accepts. Automaton has has 84 states, 80 states have (on average 1.4) internal successors, (112), 48 states have internal predecessors, (112), 17 states have call successors, (17), 1 states have call predecessors, (17), 23 states have return successors, (37), 36 states have call predecessors, (37), 17 states have call successors, (37) Word has length 160 [2023-02-15 12:38:12,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 12:38:12,169 INFO L225 Difference]: With dead ends: 60 [2023-02-15 12:38:12,170 INFO L226 Difference]: Without dead ends: 50 [2023-02-15 12:38:12,171 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 443 GetRequests, 312 SyntacticMatches, 20 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3532 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=916, Invalid=11740, Unknown=0, NotChecked=0, Total=12656 [2023-02-15 12:38:12,171 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 38 mSDsluCounter, 437 mSDsCounter, 0 mSdLazyCounter, 1186 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 458 SdHoareTripleChecker+Invalid, 1199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 1186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-02-15 12:38:12,171 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 458 Invalid, 1199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 1186 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-02-15 12:38:12,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2023-02-15 12:38:12,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2023-02-15 12:38:12,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 34 states have (on average 1.0294117647058822) internal successors, (35), 35 states have internal predecessors, (35), 3 states have call successors, (3), 1 states have call predecessors, (3), 12 states have return successors, (14), 13 states have call predecessors, (14), 3 states have call successors, (14) [2023-02-15 12:38:12,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 52 transitions. [2023-02-15 12:38:12,183 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 52 transitions. Word has length 160 [2023-02-15 12:38:12,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 12:38:12,184 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 52 transitions. [2023-02-15 12:38:12,185 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 84 states, 80 states have (on average 1.4) internal successors, (112), 48 states have internal predecessors, (112), 17 states have call successors, (17), 1 states have call predecessors, (17), 23 states have return successors, (37), 36 states have call predecessors, (37), 17 states have call successors, (37) [2023-02-15 12:38:12,185 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 52 transitions. [2023-02-15 12:38:12,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2023-02-15 12:38:12,186 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 12:38:12,187 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 24, 22, 22, 22, 22, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 12:38:12,192 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-02-15 12:38:12,392 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 [2023-02-15 12:38:12,392 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 12:38:12,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 12:38:12,393 INFO L85 PathProgramCache]: Analyzing trace with hash -1140202146, now seen corresponding path program 12 times [2023-02-15 12:38:12,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 12:38:12,393 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398157524] [2023-02-15 12:38:12,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 12:38:12,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 12:38:12,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:38:12,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 12:38:12,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:38:13,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:38:13,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:38:13,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:38:13,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:38:13,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:38:13,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:38:13,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:38:13,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:38:13,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:38:13,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:38:13,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:38:13,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:38:13,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:38:13,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:38:14,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:38:14,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:38:14,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:38:14,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:38:14,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:38:14,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:38:14,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:38:14,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:38:14,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-02-15 12:38:14,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:38:14,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:38:14,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:38:14,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:38:14,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:38:14,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:38:14,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:38:15,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:38:15,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:38:15,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:38:15,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:38:15,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:38:15,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:38:15,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:38:15,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:38:15,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:38:15,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:38:15,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:38:15,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:38:15,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:38:15,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:38:15,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:38:15,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:38:15,339 INFO L134 CoverageAnalysis]: Checked inductivity of 1842 backedges. 82 proven. 834 refuted. 0 times theorem prover too weak. 926 trivial. 0 not checked. [2023-02-15 12:38:15,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 12:38:15,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398157524] [2023-02-15 12:38:15,339 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [398157524] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 12:38:15,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [384625884] [2023-02-15 12:38:15,339 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-02-15 12:38:15,339 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 12:38:15,339 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 12:38:15,341 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) [2023-02-15 12:38:15,341 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-02-15 12:38:15,511 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 28 check-sat command(s) [2023-02-15 12:38:15,511 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 12:38:15,516 WARN L261 TraceCheckSpWp]: Trace formula consists of 501 conjuncts, 289 conjunts are in the unsatisfiable core [2023-02-15 12:38:15,541 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 12:38:16,745 INFO L134 CoverageAnalysis]: Checked inductivity of 1842 backedges. 11 proven. 825 refuted. 0 times theorem prover too weak. 1006 trivial. 0 not checked. [2023-02-15 12:38:16,745 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 12:38:23,419 INFO L134 CoverageAnalysis]: Checked inductivity of 1842 backedges. 38 proven. 1464 refuted. 0 times theorem prover too weak. 340 trivial. 0 not checked. [2023-02-15 12:38:23,419 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [384625884] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 12:38:23,419 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 12:38:23,420 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 32, 45] total 90 [2023-02-15 12:38:23,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2147403920] [2023-02-15 12:38:23,420 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 12:38:23,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 90 states [2023-02-15 12:38:23,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 12:38:23,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2023-02-15 12:38:23,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=344, Invalid=7666, Unknown=0, NotChecked=0, Total=8010 [2023-02-15 12:38:23,422 INFO L87 Difference]: Start difference. First operand 50 states and 52 transitions. Second operand has 90 states, 86 states have (on average 1.3953488372093024) internal successors, (120), 51 states have internal predecessors, (120), 18 states have call successors, (18), 1 states have call predecessors, (18), 25 states have return successors, (40), 39 states have call predecessors, (40), 18 states have call successors, (40) [2023-02-15 12:38:25,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 12:38:25,043 INFO L93 Difference]: Finished difference Result 63 states and 68 transitions. [2023-02-15 12:38:25,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2023-02-15 12:38:25,043 INFO L78 Accepts]: Start accepts. Automaton has has 90 states, 86 states have (on average 1.3953488372093024) internal successors, (120), 51 states have internal predecessors, (120), 18 states have call successors, (18), 1 states have call predecessors, (18), 25 states have return successors, (40), 39 states have call predecessors, (40), 18 states have call successors, (40) Word has length 174 [2023-02-15 12:38:25,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 12:38:25,044 INFO L225 Difference]: With dead ends: 63 [2023-02-15 12:38:25,044 INFO L226 Difference]: Without dead ends: 53 [2023-02-15 12:38:25,045 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 481 GetRequests, 340 SyntacticMatches, 22 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4086 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=1014, Invalid=13506, Unknown=0, NotChecked=0, Total=14520 [2023-02-15 12:38:25,046 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 292 mSDsluCounter, 505 mSDsCounter, 0 mSdLazyCounter, 1318 mSolverCounterSat, 144 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 307 SdHoareTripleChecker+Valid, 526 SdHoareTripleChecker+Invalid, 1462 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 144 IncrementalHoareTripleChecker+Valid, 1318 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-02-15 12:38:25,046 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [307 Valid, 526 Invalid, 1462 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [144 Valid, 1318 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-02-15 12:38:25,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2023-02-15 12:38:25,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2023-02-15 12:38:25,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 36 states have (on average 1.0277777777777777) internal successors, (37), 37 states have internal predecessors, (37), 3 states have call successors, (3), 1 states have call predecessors, (3), 13 states have return successors, (15), 14 states have call predecessors, (15), 3 states have call successors, (15) [2023-02-15 12:38:25,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 55 transitions. [2023-02-15 12:38:25,049 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 55 transitions. Word has length 174 [2023-02-15 12:38:25,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 12:38:25,049 INFO L495 AbstractCegarLoop]: Abstraction has 53 states and 55 transitions. [2023-02-15 12:38:25,050 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 90 states, 86 states have (on average 1.3953488372093024) internal successors, (120), 51 states have internal predecessors, (120), 18 states have call successors, (18), 1 states have call predecessors, (18), 25 states have return successors, (40), 39 states have call predecessors, (40), 18 states have call successors, (40) [2023-02-15 12:38:25,050 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 55 transitions. [2023-02-15 12:38:25,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2023-02-15 12:38:25,051 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 12:38:25,051 INFO L195 NwaCegarLoop]: trace histogram [26, 26, 26, 24, 24, 24, 24, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 12:38:25,061 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-02-15 12:38:25,257 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 [2023-02-15 12:38:25,257 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 12:38:25,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 12:38:25,258 INFO L85 PathProgramCache]: Analyzing trace with hash 831471020, now seen corresponding path program 13 times [2023-02-15 12:38:25,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 12:38:25,258 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297450266] [2023-02-15 12:38:25,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 12:38:25,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 12:38:25,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:38:25,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 12:38:25,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:38:26,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:38:26,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:38:26,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:38:26,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:38:26,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:38:26,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:38:26,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:38:26,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:38:26,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:38:26,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:38:26,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:38:26,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:38:26,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:38:26,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:38:27,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:38:27,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:38:27,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:38:27,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:38:27,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:38:27,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:38:27,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:38:27,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:38:27,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:38:27,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:38:27,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-02-15 12:38:27,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:38:27,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:38:27,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:38:27,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:38:27,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:38:27,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:38:27,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:38:28,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:38:28,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:38:28,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:38:28,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:38:28,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:38:28,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:38:28,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:38:28,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:38:28,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:38:28,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:38:28,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:38:28,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:38:28,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:38:28,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:38:28,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:38:28,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:38:28,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:38:28,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:38:28,566 INFO L134 CoverageAnalysis]: Checked inductivity of 2177 backedges. 90 proven. 982 refuted. 0 times theorem prover too weak. 1105 trivial. 0 not checked. [2023-02-15 12:38:28,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 12:38:28,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297450266] [2023-02-15 12:38:28,567 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1297450266] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 12:38:28,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1919612147] [2023-02-15 12:38:28,567 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-02-15 12:38:28,567 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 12:38:28,567 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 12:38:28,568 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) [2023-02-15 12:38:28,614 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-02-15 12:38:28,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:38:28,784 WARN L261 TraceCheckSpWp]: Trace formula consists of 539 conjuncts, 313 conjunts are in the unsatisfiable core [2023-02-15 12:38:28,789 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 12:38:30,091 INFO L134 CoverageAnalysis]: Checked inductivity of 2177 backedges. 12 proven. 972 refuted. 0 times theorem prover too weak. 1193 trivial. 0 not checked. [2023-02-15 12:38:30,091 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 12:38:36,364 INFO L134 CoverageAnalysis]: Checked inductivity of 2177 backedges. 41 proven. 1741 refuted. 0 times theorem prover too weak. 395 trivial. 0 not checked. [2023-02-15 12:38:36,365 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1919612147] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 12:38:36,365 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 12:38:36,365 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 34, 48] total 96 [2023-02-15 12:38:36,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595338547] [2023-02-15 12:38:36,365 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 12:38:36,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2023-02-15 12:38:36,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 12:38:36,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2023-02-15 12:38:36,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=368, Invalid=8752, Unknown=0, NotChecked=0, Total=9120 [2023-02-15 12:38:36,367 INFO L87 Difference]: Start difference. First operand 53 states and 55 transitions. Second operand has 96 states, 92 states have (on average 1.391304347826087) internal successors, (128), 54 states have internal predecessors, (128), 19 states have call successors, (19), 1 states have call predecessors, (19), 27 states have return successors, (43), 42 states have call predecessors, (43), 19 states have call successors, (43) [2023-02-15 12:38:37,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 12:38:37,669 INFO L93 Difference]: Finished difference Result 66 states and 71 transitions. [2023-02-15 12:38:37,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2023-02-15 12:38:37,670 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 92 states have (on average 1.391304347826087) internal successors, (128), 54 states have internal predecessors, (128), 19 states have call successors, (19), 1 states have call predecessors, (19), 27 states have return successors, (43), 42 states have call predecessors, (43), 19 states have call successors, (43) Word has length 188 [2023-02-15 12:38:37,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 12:38:37,670 INFO L225 Difference]: With dead ends: 66 [2023-02-15 12:38:37,670 INFO L226 Difference]: Without dead ends: 56 [2023-02-15 12:38:37,672 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 519 GetRequests, 368 SyntacticMatches, 24 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4676 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=1116, Invalid=15396, Unknown=0, NotChecked=0, Total=16512 [2023-02-15 12:38:37,672 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 93 mSDsluCounter, 579 mSDsCounter, 0 mSdLazyCounter, 1579 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 601 SdHoareTripleChecker+Invalid, 1621 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 1579 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-02-15 12:38:37,672 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 601 Invalid, 1621 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 1579 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-02-15 12:38:37,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2023-02-15 12:38:37,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2023-02-15 12:38:37,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 38 states have (on average 1.0263157894736843) internal successors, (39), 39 states have internal predecessors, (39), 3 states have call successors, (3), 1 states have call predecessors, (3), 14 states have return successors, (16), 15 states have call predecessors, (16), 3 states have call successors, (16) [2023-02-15 12:38:37,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 58 transitions. [2023-02-15 12:38:37,676 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 58 transitions. Word has length 188 [2023-02-15 12:38:37,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 12:38:37,676 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 58 transitions. [2023-02-15 12:38:37,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 92 states have (on average 1.391304347826087) internal successors, (128), 54 states have internal predecessors, (128), 19 states have call successors, (19), 1 states have call predecessors, (19), 27 states have return successors, (43), 42 states have call predecessors, (43), 19 states have call successors, (43) [2023-02-15 12:38:37,676 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 58 transitions. [2023-02-15 12:38:37,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2023-02-15 12:38:37,677 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 12:38:37,677 INFO L195 NwaCegarLoop]: trace histogram [28, 28, 28, 26, 26, 26, 26, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 12:38:37,683 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-02-15 12:38:37,883 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 [2023-02-15 12:38:37,883 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 12:38:37,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 12:38:37,884 INFO L85 PathProgramCache]: Analyzing trace with hash -55195778, now seen corresponding path program 14 times [2023-02-15 12:38:37,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 12:38:37,884 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429831598] [2023-02-15 12:38:37,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 12:38:37,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 12:38:37,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:38:38,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 12:38:38,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:38:38,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:38:38,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:38:39,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:38:39,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:38:39,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:38:39,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:38:39,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:38:39,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:38:39,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:38:39,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:38:39,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:38:39,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:38:39,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:38:39,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:38:40,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:38:40,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:38:40,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:38:40,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:38:40,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:38:40,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:38:40,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:38:40,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:38:40,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:38:40,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:38:40,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:38:40,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:38:40,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-02-15 12:38:40,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:38:40,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:38:40,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:38:41,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:38:41,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:38:41,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:38:41,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:38:41,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:38:41,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:38:41,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:38:41,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:38:41,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:38:41,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:38:41,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:38:41,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:38:41,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:38:41,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:38:41,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:38:41,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:38:41,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:38:41,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:38:41,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:38:41,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:38:41,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:38:41,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:38:41,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:38:41,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:38:41,861 INFO L134 CoverageAnalysis]: Checked inductivity of 2540 backedges. 98 proven. 1142 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2023-02-15 12:38:41,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 12:38:41,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429831598] [2023-02-15 12:38:41,861 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1429831598] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 12:38:41,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [124043759] [2023-02-15 12:38:41,861 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-15 12:38:41,861 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 12:38:41,862 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 12:38:41,863 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) [2023-02-15 12:38:41,863 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-02-15 12:38:42,074 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-15 12:38:42,075 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 12:38:42,079 WARN L261 TraceCheckSpWp]: Trace formula consists of 577 conjuncts, 337 conjunts are in the unsatisfiable core [2023-02-15 12:38:42,083 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 12:38:43,761 INFO L134 CoverageAnalysis]: Checked inductivity of 2540 backedges. 13 proven. 1131 refuted. 0 times theorem prover too weak. 1396 trivial. 0 not checked. [2023-02-15 12:38:43,762 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 12:38:52,865 INFO L134 CoverageAnalysis]: Checked inductivity of 2540 backedges. 44 proven. 2042 refuted. 0 times theorem prover too weak. 454 trivial. 0 not checked. [2023-02-15 12:38:52,865 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [124043759] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 12:38:52,865 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 12:38:52,865 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 36, 51] total 102 [2023-02-15 12:38:52,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805687435] [2023-02-15 12:38:52,866 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 12:38:52,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 102 states [2023-02-15 12:38:52,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 12:38:52,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2023-02-15 12:38:52,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=392, Invalid=9910, Unknown=0, NotChecked=0, Total=10302 [2023-02-15 12:38:52,869 INFO L87 Difference]: Start difference. First operand 56 states and 58 transitions. Second operand has 102 states, 98 states have (on average 1.3877551020408163) internal successors, (136), 57 states have internal predecessors, (136), 20 states have call successors, (20), 1 states have call predecessors, (20), 29 states have return successors, (46), 45 states have call predecessors, (46), 20 states have call successors, (46) [2023-02-15 12:38:54,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 12:38:54,901 INFO L93 Difference]: Finished difference Result 69 states and 74 transitions. [2023-02-15 12:38:54,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2023-02-15 12:38:54,901 INFO L78 Accepts]: Start accepts. Automaton has has 102 states, 98 states have (on average 1.3877551020408163) internal successors, (136), 57 states have internal predecessors, (136), 20 states have call successors, (20), 1 states have call predecessors, (20), 29 states have return successors, (46), 45 states have call predecessors, (46), 20 states have call successors, (46) Word has length 202 [2023-02-15 12:38:54,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 12:38:54,902 INFO L225 Difference]: With dead ends: 69 [2023-02-15 12:38:54,902 INFO L226 Difference]: Without dead ends: 59 [2023-02-15 12:38:54,903 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 557 GetRequests, 396 SyntacticMatches, 26 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5306 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=1222, Invalid=17410, Unknown=0, NotChecked=0, Total=18632 [2023-02-15 12:38:54,904 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 336 mSDsluCounter, 900 mSDsCounter, 0 mSdLazyCounter, 2025 mSolverCounterSat, 167 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 354 SdHoareTripleChecker+Valid, 923 SdHoareTripleChecker+Invalid, 2192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 167 IncrementalHoareTripleChecker+Valid, 2025 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-02-15 12:38:54,904 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [354 Valid, 923 Invalid, 2192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [167 Valid, 2025 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-02-15 12:38:54,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2023-02-15 12:38:54,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2023-02-15 12:38:54,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 40 states have (on average 1.025) internal successors, (41), 41 states have internal predecessors, (41), 3 states have call successors, (3), 1 states have call predecessors, (3), 15 states have return successors, (17), 16 states have call predecessors, (17), 3 states have call successors, (17) [2023-02-15 12:38:54,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 61 transitions. [2023-02-15 12:38:54,906 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 61 transitions. Word has length 202 [2023-02-15 12:38:54,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 12:38:54,906 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 61 transitions. [2023-02-15 12:38:54,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 102 states, 98 states have (on average 1.3877551020408163) internal successors, (136), 57 states have internal predecessors, (136), 20 states have call successors, (20), 1 states have call predecessors, (20), 29 states have return successors, (46), 45 states have call predecessors, (46), 20 states have call successors, (46) [2023-02-15 12:38:54,907 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 61 transitions. [2023-02-15 12:38:54,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2023-02-15 12:38:54,909 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 12:38:54,910 INFO L195 NwaCegarLoop]: trace histogram [30, 30, 30, 28, 28, 28, 28, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 12:38:54,915 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-02-15 12:38:55,114 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 [2023-02-15 12:38:55,115 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 12:38:55,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 12:38:55,115 INFO L85 PathProgramCache]: Analyzing trace with hash 361008364, now seen corresponding path program 15 times [2023-02-15 12:38:55,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 12:38:55,116 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558141260] [2023-02-15 12:38:55,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 12:38:55,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 12:38:55,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:38:55,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 12:38:55,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:38:56,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:38:56,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:38:56,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:38:56,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:38:56,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:38:56,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:38:56,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:38:56,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:38:56,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:38:56,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:38:57,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:38:57,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:38:57,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:38:57,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:38:57,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:38:57,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:38:57,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:38:57,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:38:57,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:38:57,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:38:57,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:38:57,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:38:57,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:38:57,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:38:57,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:38:57,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:38:57,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:38:57,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:38:58,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-02-15 12:38:58,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:38:58,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:38:58,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:38:58,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:38:58,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:38:58,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:38:58,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:38:58,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:38:58,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:38:59,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:38:59,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:38:59,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:38:59,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:38:59,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:38:59,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:38:59,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:38:59,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:38:59,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:38:59,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:38:59,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:38:59,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:38:59,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:38:59,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:38:59,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:38:59,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:38:59,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:38:59,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:38:59,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:38:59,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:38:59,620 INFO L134 CoverageAnalysis]: Checked inductivity of 2931 backedges. 106 proven. 1314 refuted. 0 times theorem prover too weak. 1511 trivial. 0 not checked. [2023-02-15 12:38:59,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 12:38:59,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558141260] [2023-02-15 12:38:59,620 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [558141260] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 12:38:59,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [372841164] [2023-02-15 12:38:59,620 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-15 12:38:59,620 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 12:38:59,621 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 12:38:59,621 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) [2023-02-15 12:38:59,623 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-02-15 12:38:59,909 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 35 check-sat command(s) [2023-02-15 12:38:59,909 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 12:38:59,915 WARN L261 TraceCheckSpWp]: Trace formula consists of 615 conjuncts, 361 conjunts are in the unsatisfiable core [2023-02-15 12:38:59,918 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 12:39:01,444 INFO L134 CoverageAnalysis]: Checked inductivity of 2931 backedges. 14 proven. 1302 refuted. 0 times theorem prover too weak. 1615 trivial. 0 not checked. [2023-02-15 12:39:01,444 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 12:39:10,377 INFO L134 CoverageAnalysis]: Checked inductivity of 2931 backedges. 47 proven. 2367 refuted. 0 times theorem prover too weak. 517 trivial. 0 not checked. [2023-02-15 12:39:10,377 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [372841164] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 12:39:10,377 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 12:39:10,377 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 38, 54] total 108 [2023-02-15 12:39:10,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768862081] [2023-02-15 12:39:10,378 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 12:39:10,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 108 states [2023-02-15 12:39:10,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 12:39:10,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 108 interpolants. [2023-02-15 12:39:10,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=416, Invalid=11140, Unknown=0, NotChecked=0, Total=11556 [2023-02-15 12:39:10,380 INFO L87 Difference]: Start difference. First operand 59 states and 61 transitions. Second operand has 108 states, 104 states have (on average 1.3846153846153846) internal successors, (144), 60 states have internal predecessors, (144), 21 states have call successors, (21), 1 states have call predecessors, (21), 31 states have return successors, (49), 48 states have call predecessors, (49), 21 states have call successors, (49) [2023-02-15 12:39:12,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 12:39:12,472 INFO L93 Difference]: Finished difference Result 72 states and 77 transitions. [2023-02-15 12:39:12,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2023-02-15 12:39:12,472 INFO L78 Accepts]: Start accepts. Automaton has has 108 states, 104 states have (on average 1.3846153846153846) internal successors, (144), 60 states have internal predecessors, (144), 21 states have call successors, (21), 1 states have call predecessors, (21), 31 states have return successors, (49), 48 states have call predecessors, (49), 21 states have call successors, (49) Word has length 216 [2023-02-15 12:39:12,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 12:39:12,473 INFO L225 Difference]: With dead ends: 72 [2023-02-15 12:39:12,473 INFO L226 Difference]: Without dead ends: 62 [2023-02-15 12:39:12,474 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 595 GetRequests, 424 SyntacticMatches, 28 SemanticMatches, 143 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5982 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=1332, Invalid=19548, Unknown=0, NotChecked=0, Total=20880 [2023-02-15 12:39:12,474 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 547 mSDsluCounter, 900 mSDsCounter, 0 mSdLazyCounter, 2308 mSolverCounterSat, 272 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 565 SdHoareTripleChecker+Valid, 924 SdHoareTripleChecker+Invalid, 2580 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 272 IncrementalHoareTripleChecker+Valid, 2308 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-02-15 12:39:12,474 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [565 Valid, 924 Invalid, 2580 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [272 Valid, 2308 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-02-15 12:39:12,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2023-02-15 12:39:12,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2023-02-15 12:39:12,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 42 states have (on average 1.0238095238095237) internal successors, (43), 43 states have internal predecessors, (43), 3 states have call successors, (3), 1 states have call predecessors, (3), 16 states have return successors, (18), 17 states have call predecessors, (18), 3 states have call successors, (18) [2023-02-15 12:39:12,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 64 transitions. [2023-02-15 12:39:12,477 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 64 transitions. Word has length 216 [2023-02-15 12:39:12,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 12:39:12,477 INFO L495 AbstractCegarLoop]: Abstraction has 62 states and 64 transitions. [2023-02-15 12:39:12,478 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 108 states, 104 states have (on average 1.3846153846153846) internal successors, (144), 60 states have internal predecessors, (144), 21 states have call successors, (21), 1 states have call predecessors, (21), 31 states have return successors, (49), 48 states have call predecessors, (49), 21 states have call successors, (49) [2023-02-15 12:39:12,478 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 64 transitions. [2023-02-15 12:39:12,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2023-02-15 12:39:12,478 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 12:39:12,478 INFO L195 NwaCegarLoop]: trace histogram [32, 32, 32, 30, 30, 30, 30, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 12:39:12,491 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2023-02-15 12:39:12,679 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 [2023-02-15 12:39:12,679 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 12:39:12,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 12:39:12,680 INFO L85 PathProgramCache]: Analyzing trace with hash -500866658, now seen corresponding path program 16 times [2023-02-15 12:39:12,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 12:39:12,680 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146370662] [2023-02-15 12:39:12,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 12:39:12,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 12:39:12,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:39:13,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 12:39:13,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:39:13,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:39:13,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:39:14,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:39:14,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:39:14,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:39:14,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:39:14,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:39:14,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:39:14,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:39:14,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:39:14,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:39:14,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:39:15,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:39:15,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:39:15,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:39:15,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:39:15,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:39:15,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:39:15,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:39:15,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:39:15,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:39:15,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:39:15,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:39:15,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:39:15,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:39:15,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:39:15,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:39:15,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:39:16,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:39:16,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:39:16,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-02-15 12:39:16,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:39:16,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:39:16,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:39:16,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:39:16,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:39:16,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:39:17,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:39:17,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:39:17,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:39:17,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:39:17,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:39:17,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:39:17,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:39:17,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:39:17,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:39:17,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:39:17,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:39:17,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:39:17,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:39:17,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:39:17,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:39:17,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:39:17,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:39:18,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:39:18,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:39:18,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:39:18,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:39:18,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:39:18,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:39:18,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:39:18,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:39:18,083 INFO L134 CoverageAnalysis]: Checked inductivity of 3350 backedges. 114 proven. 1498 refuted. 0 times theorem prover too weak. 1738 trivial. 0 not checked. [2023-02-15 12:39:18,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 12:39:18,083 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146370662] [2023-02-15 12:39:18,083 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2146370662] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 12:39:18,083 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1924659866] [2023-02-15 12:39:18,083 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-02-15 12:39:18,083 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 12:39:18,084 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 12:39:18,085 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) [2023-02-15 12:39:18,086 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-02-15 12:39:18,398 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-02-15 12:39:18,398 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 12:39:18,404 WARN L261 TraceCheckSpWp]: Trace formula consists of 653 conjuncts, 385 conjunts are in the unsatisfiable core [2023-02-15 12:39:18,410 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 12:39:20,149 INFO L134 CoverageAnalysis]: Checked inductivity of 3350 backedges. 15 proven. 1485 refuted. 0 times theorem prover too weak. 1850 trivial. 0 not checked. [2023-02-15 12:39:20,149 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 12:39:28,847 INFO L134 CoverageAnalysis]: Checked inductivity of 3350 backedges. 50 proven. 2716 refuted. 0 times theorem prover too weak. 584 trivial. 0 not checked. [2023-02-15 12:39:28,847 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1924659866] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 12:39:28,847 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 12:39:28,847 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 40, 57] total 114 [2023-02-15 12:39:28,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78606598] [2023-02-15 12:39:28,848 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 12:39:28,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 114 states [2023-02-15 12:39:28,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 12:39:28,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 114 interpolants. [2023-02-15 12:39:28,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=440, Invalid=12442, Unknown=0, NotChecked=0, Total=12882 [2023-02-15 12:39:28,850 INFO L87 Difference]: Start difference. First operand 62 states and 64 transitions. Second operand has 114 states, 110 states have (on average 1.3818181818181818) internal successors, (152), 63 states have internal predecessors, (152), 22 states have call successors, (22), 1 states have call predecessors, (22), 33 states have return successors, (52), 51 states have call predecessors, (52), 22 states have call successors, (52) [2023-02-15 12:39:31,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 12:39:31,071 INFO L93 Difference]: Finished difference Result 75 states and 80 transitions. [2023-02-15 12:39:31,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-02-15 12:39:31,072 INFO L78 Accepts]: Start accepts. Automaton has has 114 states, 110 states have (on average 1.3818181818181818) internal successors, (152), 63 states have internal predecessors, (152), 22 states have call successors, (22), 1 states have call predecessors, (22), 33 states have return successors, (52), 51 states have call predecessors, (52), 22 states have call successors, (52) Word has length 230 [2023-02-15 12:39:31,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 12:39:31,073 INFO L225 Difference]: With dead ends: 75 [2023-02-15 12:39:31,073 INFO L226 Difference]: Without dead ends: 65 [2023-02-15 12:39:31,074 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 633 GetRequests, 452 SyntacticMatches, 30 SemanticMatches, 151 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6690 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=1446, Invalid=21810, Unknown=0, NotChecked=0, Total=23256 [2023-02-15 12:39:31,076 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 321 mSDsluCounter, 852 mSDsCounter, 0 mSdLazyCounter, 1944 mSolverCounterSat, 153 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 342 SdHoareTripleChecker+Valid, 877 SdHoareTripleChecker+Invalid, 2097 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 153 IncrementalHoareTripleChecker+Valid, 1944 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-02-15 12:39:31,076 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [342 Valid, 877 Invalid, 2097 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [153 Valid, 1944 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-02-15 12:39:31,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2023-02-15 12:39:31,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2023-02-15 12:39:31,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 44 states have (on average 1.0227272727272727) internal successors, (45), 45 states have internal predecessors, (45), 3 states have call successors, (3), 1 states have call predecessors, (3), 17 states have return successors, (19), 18 states have call predecessors, (19), 3 states have call successors, (19) [2023-02-15 12:39:31,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 67 transitions. [2023-02-15 12:39:31,083 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 67 transitions. Word has length 230 [2023-02-15 12:39:31,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 12:39:31,084 INFO L495 AbstractCegarLoop]: Abstraction has 65 states and 67 transitions. [2023-02-15 12:39:31,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 114 states, 110 states have (on average 1.3818181818181818) internal successors, (152), 63 states have internal predecessors, (152), 22 states have call successors, (22), 1 states have call predecessors, (22), 33 states have return successors, (52), 51 states have call predecessors, (52), 22 states have call successors, (52) [2023-02-15 12:39:31,085 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 67 transitions. [2023-02-15 12:39:31,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2023-02-15 12:39:31,086 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 12:39:31,087 INFO L195 NwaCegarLoop]: trace histogram [34, 34, 34, 32, 32, 32, 32, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 12:39:31,092 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-02-15 12:39:31,292 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 [2023-02-15 12:39:31,293 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 12:39:31,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 12:39:31,293 INFO L85 PathProgramCache]: Analyzing trace with hash -1515658196, now seen corresponding path program 17 times [2023-02-15 12:39:31,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 12:39:31,293 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67350051] [2023-02-15 12:39:31,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 12:39:31,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 12:39:31,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:39:32,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 12:39:32,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:39:32,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:39:32,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:39:32,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:39:32,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:39:33,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:39:33,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:39:33,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:39:33,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:39:33,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:39:33,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:39:33,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:39:33,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:39:34,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:39:34,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:39:34,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:39:34,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:39:34,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:39:34,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:39:34,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:39:34,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:39:34,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:39:34,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:39:34,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:39:34,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:39:34,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:39:34,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:39:34,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:39:34,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:39:35,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:39:35,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:39:35,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:39:35,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:39:35,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2023-02-15 12:39:35,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:39:35,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:39:35,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:39:35,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:39:35,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:39:36,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:39:36,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:39:36,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:39:36,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:39:36,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:39:36,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:39:36,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:39:36,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:39:36,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:39:36,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:39:37,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:39:37,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:39:37,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:39:37,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:39:37,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:39:37,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:39:37,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:39:37,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:39:37,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:39:37,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:39:37,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:39:37,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:39:37,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:39:37,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:39:37,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:39:37,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:39:37,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:39:37,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:39:37,476 INFO L134 CoverageAnalysis]: Checked inductivity of 3797 backedges. 122 proven. 1694 refuted. 0 times theorem prover too weak. 1981 trivial. 0 not checked. [2023-02-15 12:39:37,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 12:39:37,476 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67350051] [2023-02-15 12:39:37,477 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [67350051] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 12:39:37,477 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [506049866] [2023-02-15 12:39:37,477 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-02-15 12:39:37,477 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 12:39:37,477 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 12:39:37,478 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) [2023-02-15 12:39:37,479 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-02-15 12:39:37,843 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 39 check-sat command(s) [2023-02-15 12:39:37,843 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 12:39:37,852 WARN L261 TraceCheckSpWp]: Trace formula consists of 691 conjuncts, 409 conjunts are in the unsatisfiable core [2023-02-15 12:39:37,856 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 12:39:39,861 INFO L134 CoverageAnalysis]: Checked inductivity of 3797 backedges. 16 proven. 1680 refuted. 0 times theorem prover too weak. 2101 trivial. 0 not checked. [2023-02-15 12:39:39,862 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 12:39:51,084 INFO L134 CoverageAnalysis]: Checked inductivity of 3797 backedges. 53 proven. 3089 refuted. 0 times theorem prover too weak. 655 trivial. 0 not checked. [2023-02-15 12:39:51,085 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [506049866] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 12:39:51,085 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 12:39:51,085 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 42, 60] total 120 [2023-02-15 12:39:51,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073676906] [2023-02-15 12:39:51,085 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 12:39:51,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 120 states [2023-02-15 12:39:51,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 12:39:51,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 120 interpolants. [2023-02-15 12:39:51,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=464, Invalid=13816, Unknown=0, NotChecked=0, Total=14280 [2023-02-15 12:39:51,087 INFO L87 Difference]: Start difference. First operand 65 states and 67 transitions. Second operand has 120 states, 116 states have (on average 1.3793103448275863) internal successors, (160), 66 states have internal predecessors, (160), 23 states have call successors, (23), 1 states have call predecessors, (23), 35 states have return successors, (55), 54 states have call predecessors, (55), 23 states have call successors, (55) [2023-02-15 12:39:53,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 12:39:53,623 INFO L93 Difference]: Finished difference Result 78 states and 83 transitions. [2023-02-15 12:39:53,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2023-02-15 12:39:53,623 INFO L78 Accepts]: Start accepts. Automaton has has 120 states, 116 states have (on average 1.3793103448275863) internal successors, (160), 66 states have internal predecessors, (160), 23 states have call successors, (23), 1 states have call predecessors, (23), 35 states have return successors, (55), 54 states have call predecessors, (55), 23 states have call successors, (55) Word has length 244 [2023-02-15 12:39:53,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 12:39:53,624 INFO L225 Difference]: With dead ends: 78 [2023-02-15 12:39:53,624 INFO L226 Difference]: Without dead ends: 68 [2023-02-15 12:39:53,625 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 671 GetRequests, 480 SyntacticMatches, 32 SemanticMatches, 159 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7444 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=1564, Invalid=24196, Unknown=0, NotChecked=0, Total=25760 [2023-02-15 12:39:53,626 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 329 mSDsluCounter, 1356 mSDsCounter, 0 mSdLazyCounter, 3019 mSolverCounterSat, 166 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 351 SdHoareTripleChecker+Valid, 1382 SdHoareTripleChecker+Invalid, 3185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 166 IncrementalHoareTripleChecker+Valid, 3019 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-02-15 12:39:53,626 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [351 Valid, 1382 Invalid, 3185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [166 Valid, 3019 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-02-15 12:39:53,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2023-02-15 12:39:53,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2023-02-15 12:39:53,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 46 states have (on average 1.0217391304347827) internal successors, (47), 47 states have internal predecessors, (47), 3 states have call successors, (3), 1 states have call predecessors, (3), 18 states have return successors, (20), 19 states have call predecessors, (20), 3 states have call successors, (20) [2023-02-15 12:39:53,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 70 transitions. [2023-02-15 12:39:53,628 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 70 transitions. Word has length 244 [2023-02-15 12:39:53,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 12:39:53,629 INFO L495 AbstractCegarLoop]: Abstraction has 68 states and 70 transitions. [2023-02-15 12:39:53,629 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 120 states, 116 states have (on average 1.3793103448275863) internal successors, (160), 66 states have internal predecessors, (160), 23 states have call successors, (23), 1 states have call predecessors, (23), 35 states have return successors, (55), 54 states have call predecessors, (55), 23 states have call successors, (55) [2023-02-15 12:39:53,629 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 70 transitions. [2023-02-15 12:39:53,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2023-02-15 12:39:53,630 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 12:39:53,630 INFO L195 NwaCegarLoop]: trace histogram [36, 36, 36, 34, 34, 34, 34, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 12:39:53,636 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-02-15 12:39:53,830 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 [2023-02-15 12:39:53,830 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 12:39:53,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 12:39:53,830 INFO L85 PathProgramCache]: Analyzing trace with hash -1594510402, now seen corresponding path program 18 times [2023-02-15 12:39:53,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 12:39:53,831 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767120561] [2023-02-15 12:39:53,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 12:39:53,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 12:39:53,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:39:54,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 12:39:54,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:39:55,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:39:55,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:39:55,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:39:55,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:39:55,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:39:55,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:39:56,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:39:56,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:39:56,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:39:56,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:39:56,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:39:56,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:39:56,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:39:56,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:39:57,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:39:57,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:39:57,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:39:57,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:39:57,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:39:57,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:39:57,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:39:57,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:39:57,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:39:57,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:39:57,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:39:57,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:39:57,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:39:57,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:39:58,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:39:58,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:39:58,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:39:58,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:39:58,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:39:58,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:39:58,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-02-15 12:39:58,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:39:58,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:39:58,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:39:59,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:39:59,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:39:59,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:39:59,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:39:59,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:39:59,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:39:59,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:39:59,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:40:00,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:40:00,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:40:00,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:40:00,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:40:00,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:40:00,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:40:00,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:40:00,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:40:00,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:40:00,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:40:00,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:40:00,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:40:00,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:40:00,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:40:00,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:40:00,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:40:00,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:40:00,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:40:00,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:40:00,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:40:00,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:40:00,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:40:00,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:40:00,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:40:00,928 INFO L134 CoverageAnalysis]: Checked inductivity of 4272 backedges. 130 proven. 1902 refuted. 0 times theorem prover too weak. 2240 trivial. 0 not checked. [2023-02-15 12:40:00,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 12:40:00,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767120561] [2023-02-15 12:40:00,928 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [767120561] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 12:40:00,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1235139589] [2023-02-15 12:40:00,928 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-02-15 12:40:00,928 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 12:40:00,928 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 12:40:00,931 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) [2023-02-15 12:40:00,933 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-02-15 12:40:01,363 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 42 check-sat command(s) [2023-02-15 12:40:01,363 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 12:40:01,370 WARN L261 TraceCheckSpWp]: Trace formula consists of 729 conjuncts, 432 conjunts are in the unsatisfiable core [2023-02-15 12:40:01,374 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 12:40:03,718 INFO L134 CoverageAnalysis]: Checked inductivity of 4272 backedges. 70 proven. 1904 refuted. 0 times theorem prover too weak. 2298 trivial. 0 not checked. [2023-02-15 12:40:03,718 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 12:40:17,659 INFO L134 CoverageAnalysis]: Checked inductivity of 4272 backedges. 59 proven. 3489 refuted. 0 times theorem prover too weak. 724 trivial. 0 not checked. [2023-02-15 12:40:17,659 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1235139589] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 12:40:17,660 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 12:40:17,660 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 48, 67] total 131 [2023-02-15 12:40:17,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411167279] [2023-02-15 12:40:17,660 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 12:40:17,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 131 states [2023-02-15 12:40:17,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 12:40:17,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 131 interpolants. [2023-02-15 12:40:17,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=523, Invalid=16507, Unknown=0, NotChecked=0, Total=17030 [2023-02-15 12:40:17,663 INFO L87 Difference]: Start difference. First operand 68 states and 70 transitions. Second operand has 131 states, 126 states have (on average 1.4047619047619047) internal successors, (177), 74 states have internal predecessors, (177), 25 states have call successors, (25), 1 states have call predecessors, (25), 38 states have return successors, (60), 57 states have call predecessors, (60), 25 states have call successors, (60) [2023-02-15 12:40:20,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 12:40:20,036 INFO L93 Difference]: Finished difference Result 81 states and 86 transitions. [2023-02-15 12:40:20,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2023-02-15 12:40:20,037 INFO L78 Accepts]: Start accepts. Automaton has has 131 states, 126 states have (on average 1.4047619047619047) internal successors, (177), 74 states have internal predecessors, (177), 25 states have call successors, (25), 1 states have call predecessors, (25), 38 states have return successors, (60), 57 states have call predecessors, (60), 25 states have call successors, (60) Word has length 258 [2023-02-15 12:40:20,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 12:40:20,038 INFO L225 Difference]: With dead ends: 81 [2023-02-15 12:40:20,038 INFO L226 Difference]: Without dead ends: 71 [2023-02-15 12:40:20,039 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 709 GetRequests, 483 SyntacticMatches, 54 SemanticMatches, 172 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10234 ImplicationChecksByTransitivity, 8.1s TimeCoverageRelationStatistics Valid=1869, Invalid=28233, Unknown=0, NotChecked=0, Total=30102 [2023-02-15 12:40:20,039 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 346 mSDsluCounter, 1555 mSDsCounter, 0 mSdLazyCounter, 3421 mSolverCounterSat, 171 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 367 SdHoareTripleChecker+Valid, 1582 SdHoareTripleChecker+Invalid, 3592 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 171 IncrementalHoareTripleChecker+Valid, 3421 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-02-15 12:40:20,040 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [367 Valid, 1582 Invalid, 3592 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [171 Valid, 3421 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-02-15 12:40:20,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2023-02-15 12:40:20,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2023-02-15 12:40:20,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 48 states have (on average 1.0208333333333333) internal successors, (49), 49 states have internal predecessors, (49), 3 states have call successors, (3), 1 states have call predecessors, (3), 19 states have return successors, (21), 20 states have call predecessors, (21), 3 states have call successors, (21) [2023-02-15 12:40:20,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 73 transitions. [2023-02-15 12:40:20,049 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 73 transitions. Word has length 258 [2023-02-15 12:40:20,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 12:40:20,049 INFO L495 AbstractCegarLoop]: Abstraction has 71 states and 73 transitions. [2023-02-15 12:40:20,049 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 131 states, 126 states have (on average 1.4047619047619047) internal successors, (177), 74 states have internal predecessors, (177), 25 states have call successors, (25), 1 states have call predecessors, (25), 38 states have return successors, (60), 57 states have call predecessors, (60), 25 states have call successors, (60) [2023-02-15 12:40:20,050 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 73 transitions. [2023-02-15 12:40:20,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2023-02-15 12:40:20,052 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 12:40:20,053 INFO L195 NwaCegarLoop]: trace histogram [38, 38, 38, 36, 36, 36, 36, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 12:40:20,059 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-02-15 12:40:20,259 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 [2023-02-15 12:40:20,260 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 12:40:20,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 12:40:20,260 INFO L85 PathProgramCache]: Analyzing trace with hash -623426708, now seen corresponding path program 19 times [2023-02-15 12:40:20,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 12:40:20,260 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377258962] [2023-02-15 12:40:20,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 12:40:20,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 12:40:20,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:40:21,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 12:40:21,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:40:21,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:40:21,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:40:22,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:40:22,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:40:22,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:40:22,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:40:22,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:40:22,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:40:23,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:40:23,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:40:23,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:40:23,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:40:23,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:40:23,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:40:24,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:40:24,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:40:24,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:40:24,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:40:24,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:40:24,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:40:24,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:40:24,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:40:24,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:40:24,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:40:24,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:40:24,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:40:24,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:40:24,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:40:24,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:40:24,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:40:25,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:40:25,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:40:25,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:40:25,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:40:25,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:40:25,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:40:25,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2023-02-15 12:40:25,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:40:25,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:40:25,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:40:26,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:40:26,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:40:26,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:40:26,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:40:26,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:40:26,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:40:27,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:40:27,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:40:27,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:40:27,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:40:27,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:40:27,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:40:27,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:40:27,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:40:27,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:40:27,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:40:28,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:40:28,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:40:28,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:40:28,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:40:28,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:40:28,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:40:28,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:40:28,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:40:28,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:40:28,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:40:28,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:40:28,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:40:28,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:40:28,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:40:28,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:40:28,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:40:28,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:40:28,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:40:28,541 INFO L134 CoverageAnalysis]: Checked inductivity of 4775 backedges. 138 proven. 2122 refuted. 0 times theorem prover too weak. 2515 trivial. 0 not checked. [2023-02-15 12:40:28,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 12:40:28,541 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377258962] [2023-02-15 12:40:28,541 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [377258962] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 12:40:28,542 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1768604520] [2023-02-15 12:40:28,542 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-02-15 12:40:28,542 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 12:40:28,542 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 12:40:28,558 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) [2023-02-15 12:40:28,559 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-02-15 12:40:29,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:40:29,032 WARN L261 TraceCheckSpWp]: Trace formula consists of 767 conjuncts, 457 conjunts are in the unsatisfiable core [2023-02-15 12:40:29,036 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 12:40:31,584 INFO L134 CoverageAnalysis]: Checked inductivity of 4775 backedges. 18 proven. 2106 refuted. 0 times theorem prover too weak. 2651 trivial. 0 not checked. [2023-02-15 12:40:31,585 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 12:40:44,420 INFO L134 CoverageAnalysis]: Checked inductivity of 4775 backedges. 59 proven. 3907 refuted. 0 times theorem prover too weak. 809 trivial. 0 not checked. [2023-02-15 12:40:44,421 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1768604520] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 12:40:44,421 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 12:40:44,422 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 46, 66] total 132 [2023-02-15 12:40:44,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752418592] [2023-02-15 12:40:44,422 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 12:40:44,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 132 states [2023-02-15 12:40:44,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 12:40:44,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 132 interpolants. [2023-02-15 12:40:44,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=512, Invalid=16780, Unknown=0, NotChecked=0, Total=17292 [2023-02-15 12:40:44,425 INFO L87 Difference]: Start difference. First operand 71 states and 73 transitions. Second operand has 132 states, 128 states have (on average 1.375) internal successors, (176), 72 states have internal predecessors, (176), 25 states have call successors, (25), 1 states have call predecessors, (25), 39 states have return successors, (61), 60 states have call predecessors, (61), 25 states have call successors, (61) [2023-02-15 12:40:47,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 12:40:47,613 INFO L93 Difference]: Finished difference Result 84 states and 89 transitions. [2023-02-15 12:40:47,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2023-02-15 12:40:47,614 INFO L78 Accepts]: Start accepts. Automaton has has 132 states, 128 states have (on average 1.375) internal successors, (176), 72 states have internal predecessors, (176), 25 states have call successors, (25), 1 states have call predecessors, (25), 39 states have return successors, (61), 60 states have call predecessors, (61), 25 states have call successors, (61) Word has length 272 [2023-02-15 12:40:47,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 12:40:47,615 INFO L225 Difference]: With dead ends: 84 [2023-02-15 12:40:47,615 INFO L226 Difference]: Without dead ends: 74 [2023-02-15 12:40:47,617 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 747 GetRequests, 536 SyntacticMatches, 36 SemanticMatches, 175 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9070 ImplicationChecksByTransitivity, 8.5s TimeCoverageRelationStatistics Valid=1812, Invalid=29340, Unknown=0, NotChecked=0, Total=31152 [2023-02-15 12:40:47,617 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 184 mSDsluCounter, 1223 mSDsCounter, 0 mSdLazyCounter, 3018 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 206 SdHoareTripleChecker+Valid, 1251 SdHoareTripleChecker+Invalid, 3099 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 3018 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-02-15 12:40:47,618 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [206 Valid, 1251 Invalid, 3099 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 3018 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-02-15 12:40:47,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2023-02-15 12:40:47,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2023-02-15 12:40:47,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 50 states have (on average 1.02) internal successors, (51), 51 states have internal predecessors, (51), 3 states have call successors, (3), 1 states have call predecessors, (3), 20 states have return successors, (22), 21 states have call predecessors, (22), 3 states have call successors, (22) [2023-02-15 12:40:47,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 76 transitions. [2023-02-15 12:40:47,621 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 76 transitions. Word has length 272 [2023-02-15 12:40:47,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 12:40:47,621 INFO L495 AbstractCegarLoop]: Abstraction has 74 states and 76 transitions. [2023-02-15 12:40:47,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 132 states, 128 states have (on average 1.375) internal successors, (176), 72 states have internal predecessors, (176), 25 states have call successors, (25), 1 states have call predecessors, (25), 39 states have return successors, (61), 60 states have call predecessors, (61), 25 states have call successors, (61) [2023-02-15 12:40:47,621 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 76 transitions. [2023-02-15 12:40:47,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2023-02-15 12:40:47,622 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 12:40:47,622 INFO L195 NwaCegarLoop]: trace histogram [40, 40, 40, 38, 38, 38, 38, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 12:40:47,630 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-02-15 12:40:47,829 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 [2023-02-15 12:40:47,830 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 12:40:47,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 12:40:47,830 INFO L85 PathProgramCache]: Analyzing trace with hash 1136901598, now seen corresponding path program 20 times [2023-02-15 12:40:47,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 12:40:47,830 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072756062] [2023-02-15 12:40:47,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 12:40:47,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 12:40:47,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:40:49,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 12:40:49,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:40:49,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:40:49,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:40:50,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:40:50,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:40:50,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:40:50,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:40:50,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:40:50,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:40:51,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:40:51,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:40:51,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:40:51,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:40:51,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:40:51,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:40:51,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:40:51,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:40:52,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:40:52,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:40:52,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:40:52,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:40:52,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:40:52,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:40:52,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:40:52,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:40:52,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:40:52,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:40:52,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:40:52,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:40:53,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:40:53,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:40:53,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:40:53,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:40:53,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:40:53,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:40:53,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:40:53,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:40:53,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:40:53,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:40:53,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2023-02-15 12:40:53,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:40:54,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:40:54,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:40:54,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:40:54,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:40:55,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:40:55,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:40:55,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:40:55,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:40:55,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:40:55,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:40:55,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:40:55,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:40:56,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:40:56,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:40:56,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:40:56,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:40:56,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:40:56,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:40:56,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:40:56,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:40:56,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:40:56,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:40:56,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:40:56,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:40:57,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:40:57,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:40:57,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:40:57,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:40:57,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:40:57,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:40:57,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:40:57,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:40:57,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:40:57,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:40:57,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:40:57,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:40:57,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:40:57,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:40:57,236 INFO L134 CoverageAnalysis]: Checked inductivity of 5306 backedges. 146 proven. 2354 refuted. 0 times theorem prover too weak. 2806 trivial. 0 not checked. [2023-02-15 12:40:57,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 12:40:57,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072756062] [2023-02-15 12:40:57,236 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2072756062] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 12:40:57,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [184442544] [2023-02-15 12:40:57,236 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-15 12:40:57,236 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 12:40:57,237 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 12:40:57,258 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) [2023-02-15 12:40:57,259 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-02-15 12:40:57,804 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-15 12:40:57,804 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 12:40:57,812 WARN L261 TraceCheckSpWp]: Trace formula consists of 805 conjuncts, 481 conjunts are in the unsatisfiable core [2023-02-15 12:40:57,816 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 12:41:00,317 INFO L134 CoverageAnalysis]: Checked inductivity of 5306 backedges. 19 proven. 2337 refuted. 0 times theorem prover too weak. 2950 trivial. 0 not checked. [2023-02-15 12:41:00,317 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 12:41:14,936 INFO L134 CoverageAnalysis]: Checked inductivity of 5306 backedges. 62 proven. 4352 refuted. 0 times theorem prover too weak. 892 trivial. 0 not checked. [2023-02-15 12:41:14,937 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [184442544] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 12:41:14,937 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 12:41:14,937 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 48, 69] total 138 [2023-02-15 12:41:14,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724829888] [2023-02-15 12:41:14,937 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 12:41:14,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 138 states [2023-02-15 12:41:14,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 12:41:14,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 138 interpolants. [2023-02-15 12:41:14,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=536, Invalid=18370, Unknown=0, NotChecked=0, Total=18906 [2023-02-15 12:41:14,940 INFO L87 Difference]: Start difference. First operand 74 states and 76 transitions. Second operand has 138 states, 134 states have (on average 1.373134328358209) internal successors, (184), 75 states have internal predecessors, (184), 26 states have call successors, (26), 1 states have call predecessors, (26), 41 states have return successors, (64), 63 states have call predecessors, (64), 26 states have call successors, (64) [2023-02-15 12:41:18,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 12:41:18,226 INFO L93 Difference]: Finished difference Result 87 states and 92 transitions. [2023-02-15 12:41:18,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2023-02-15 12:41:18,227 INFO L78 Accepts]: Start accepts. Automaton has has 138 states, 134 states have (on average 1.373134328358209) internal successors, (184), 75 states have internal predecessors, (184), 26 states have call successors, (26), 1 states have call predecessors, (26), 41 states have return successors, (64), 63 states have call predecessors, (64), 26 states have call successors, (64) Word has length 286 [2023-02-15 12:41:18,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 12:41:18,228 INFO L225 Difference]: With dead ends: 87 [2023-02-15 12:41:18,228 INFO L226 Difference]: Without dead ends: 77 [2023-02-15 12:41:18,230 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 785 GetRequests, 564 SyntacticMatches, 38 SemanticMatches, 183 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9942 ImplicationChecksByTransitivity, 8.5s TimeCoverageRelationStatistics Valid=1942, Invalid=32098, Unknown=0, NotChecked=0, Total=34040 [2023-02-15 12:41:18,231 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 350 mSDsluCounter, 1965 mSDsCounter, 0 mSdLazyCounter, 4198 mSolverCounterSat, 169 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 373 SdHoareTripleChecker+Valid, 1994 SdHoareTripleChecker+Invalid, 4367 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 169 IncrementalHoareTripleChecker+Valid, 4198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-02-15 12:41:18,231 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [373 Valid, 1994 Invalid, 4367 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [169 Valid, 4198 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-02-15 12:41:18,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2023-02-15 12:41:18,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2023-02-15 12:41:18,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 52 states have (on average 1.0192307692307692) internal successors, (53), 53 states have internal predecessors, (53), 3 states have call successors, (3), 1 states have call predecessors, (3), 21 states have return successors, (23), 22 states have call predecessors, (23), 3 states have call successors, (23) [2023-02-15 12:41:18,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 79 transitions. [2023-02-15 12:41:18,234 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 79 transitions. Word has length 286 [2023-02-15 12:41:18,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 12:41:18,235 INFO L495 AbstractCegarLoop]: Abstraction has 77 states and 79 transitions. [2023-02-15 12:41:18,235 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 138 states, 134 states have (on average 1.373134328358209) internal successors, (184), 75 states have internal predecessors, (184), 26 states have call successors, (26), 1 states have call predecessors, (26), 41 states have return successors, (64), 63 states have call predecessors, (64), 26 states have call successors, (64) [2023-02-15 12:41:18,235 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 79 transitions. [2023-02-15 12:41:18,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2023-02-15 12:41:18,236 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 12:41:18,236 INFO L195 NwaCegarLoop]: trace histogram [42, 42, 42, 40, 40, 40, 40, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 12:41:18,253 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-02-15 12:41:18,444 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 [2023-02-15 12:41:18,445 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 12:41:18,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 12:41:18,445 INFO L85 PathProgramCache]: Analyzing trace with hash -1075139924, now seen corresponding path program 21 times [2023-02-15 12:41:18,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 12:41:18,446 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270958037] [2023-02-15 12:41:18,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 12:41:18,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 12:41:18,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:41:19,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 12:41:19,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:41:20,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:41:20,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:41:20,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:41:20,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:41:21,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:41:21,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:41:21,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:41:21,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:41:22,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:41:22,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:41:22,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:41:22,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:41:22,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:41:22,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:41:23,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:41:23,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:41:23,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:41:23,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:41:23,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:41:23,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:41:23,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:41:23,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:41:23,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:41:23,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:41:24,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:41:24,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:41:24,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:41:24,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:41:24,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:41:24,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:41:24,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:41:24,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:41:24,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:41:24,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:41:24,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:41:24,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:41:24,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:41:24,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:41:24,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:41:24,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:41:25,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2023-02-15 12:41:25,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:41:25,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:41:25,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:41:26,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:41:26,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:41:26,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:41:26,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:41:27,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:41:27,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:41:27,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:41:27,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:41:27,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:41:27,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:41:27,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:41:27,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:41:28,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:41:28,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:41:28,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:41:28,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:41:28,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:41:28,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 12:41:28,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 12:41:28,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat