./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/reducercommutativity/sum10-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7e1ff0e6 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/reducercommutativity/sum10-1.i -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 f341d659968a9193c951bd8eec2bcf2a384f8494a1f57cb579da98ce5ebdb030 --- Real Ultimate output --- This is Ultimate 0.2.2-?-7e1ff0e [2023-02-14 21:33:15,626 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-14 21:33:15,627 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-14 21:33:15,646 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-14 21:33:15,647 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-14 21:33:15,647 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-14 21:33:15,648 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-14 21:33:15,649 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-14 21:33:15,650 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-14 21:33:15,651 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-14 21:33:15,652 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-14 21:33:15,652 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-14 21:33:15,653 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-14 21:33:15,653 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-14 21:33:15,654 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-14 21:33:15,655 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-14 21:33:15,655 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-14 21:33:15,656 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-14 21:33:15,657 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-14 21:33:15,658 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-14 21:33:15,659 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-14 21:33:15,659 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-14 21:33:15,660 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-14 21:33:15,661 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-14 21:33:15,662 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-14 21:33:15,663 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-14 21:33:15,663 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-14 21:33:15,664 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-14 21:33:15,664 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-14 21:33:15,664 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-14 21:33:15,665 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-14 21:33:15,665 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-14 21:33:15,666 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-14 21:33:15,666 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-14 21:33:15,667 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-14 21:33:15,667 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-14 21:33:15,667 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-14 21:33:15,668 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-14 21:33:15,668 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-14 21:33:15,668 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-14 21:33:15,669 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-14 21:33:15,670 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-02-14 21:33:15,683 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-14 21:33:15,683 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-14 21:33:15,684 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-14 21:33:15,684 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-14 21:33:15,684 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-14 21:33:15,684 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-14 21:33:15,685 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-14 21:33:15,685 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-14 21:33:15,685 INFO L138 SettingsManager]: * Use SBE=true [2023-02-14 21:33:15,685 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-14 21:33:15,686 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-14 21:33:15,686 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-14 21:33:15,686 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-14 21:33:15,686 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-14 21:33:15,686 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-14 21:33:15,686 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-14 21:33:15,686 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-14 21:33:15,687 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-14 21:33:15,687 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-14 21:33:15,687 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-14 21:33:15,687 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-14 21:33:15,687 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-14 21:33:15,687 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-14 21:33:15,688 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-14 21:33:15,688 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-14 21:33:15,688 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-14 21:33:15,688 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-14 21:33:15,688 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-14 21:33:15,688 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-14 21:33:15,689 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-14 21:33:15,689 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-14 21:33:15,689 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-14 21:33:15,689 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-14 21:33:15,689 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-14 21:33:15,689 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-14 21:33:15,690 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f341d659968a9193c951bd8eec2bcf2a384f8494a1f57cb579da98ce5ebdb030 [2023-02-14 21:33:15,837 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-14 21:33:15,850 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-14 21:33:15,852 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-14 21:33:15,853 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-14 21:33:15,853 INFO L275 PluginConnector]: CDTParser initialized [2023-02-14 21:33:15,854 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/reducercommutativity/sum10-1.i [2023-02-14 21:33:16,900 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-14 21:33:17,058 INFO L351 CDTParser]: Found 1 translation units. [2023-02-14 21:33:17,058 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/reducercommutativity/sum10-1.i [2023-02-14 21:33:17,062 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7fd1df8c7/19309c4218ab432ab4e173b5e9acf570/FLAGe16c38cb1 [2023-02-14 21:33:17,075 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7fd1df8c7/19309c4218ab432ab4e173b5e9acf570 [2023-02-14 21:33:17,077 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-14 21:33:17,078 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-14 21:33:17,080 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-14 21:33:17,080 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-14 21:33:17,083 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-14 21:33:17,083 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.02 09:33:17" (1/1) ... [2023-02-14 21:33:17,086 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33b94155 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 09:33:17, skipping insertion in model container [2023-02-14 21:33:17,086 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.02 09:33:17" (1/1) ... [2023-02-14 21:33:17,090 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-14 21:33:17,102 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-14 21:33:17,213 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/reducercommutativity/sum10-1.i[1277,1290] [2023-02-14 21:33:17,216 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-14 21:33:17,221 INFO L203 MainTranslator]: Completed pre-run [2023-02-14 21:33:17,233 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/reducercommutativity/sum10-1.i[1277,1290] [2023-02-14 21:33:17,233 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-14 21:33:17,242 INFO L208 MainTranslator]: Completed translation [2023-02-14 21:33:17,242 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 09:33:17 WrapperNode [2023-02-14 21:33:17,242 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-14 21:33:17,243 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-14 21:33:17,243 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-14 21:33:17,243 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-14 21:33:17,248 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 09:33:17" (1/1) ... [2023-02-14 21:33:17,253 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 09:33:17" (1/1) ... [2023-02-14 21:33:17,264 INFO L138 Inliner]: procedures = 16, calls = 22, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 67 [2023-02-14 21:33:17,264 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-14 21:33:17,265 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-14 21:33:17,265 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-14 21:33:17,265 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-14 21:33:17,270 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 09:33:17" (1/1) ... [2023-02-14 21:33:17,271 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 09:33:17" (1/1) ... [2023-02-14 21:33:17,272 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 09:33:17" (1/1) ... [2023-02-14 21:33:17,272 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 09:33:17" (1/1) ... [2023-02-14 21:33:17,275 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 09:33:17" (1/1) ... [2023-02-14 21:33:17,277 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 09:33:17" (1/1) ... [2023-02-14 21:33:17,278 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 09:33:17" (1/1) ... [2023-02-14 21:33:17,278 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 09:33:17" (1/1) ... [2023-02-14 21:33:17,280 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-14 21:33:17,280 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-14 21:33:17,280 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-14 21:33:17,280 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-14 21:33:17,281 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 09:33:17" (1/1) ... [2023-02-14 21:33:17,288 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-14 21:33:17,294 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 21:33:17,302 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) [2023-02-14 21:33:17,319 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 [2023-02-14 21:33:17,331 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-14 21:33:17,331 INFO L130 BoogieDeclarations]: Found specification of procedure sum [2023-02-14 21:33:17,332 INFO L138 BoogieDeclarations]: Found implementation of procedure sum [2023-02-14 21:33:17,332 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-14 21:33:17,332 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-02-14 21:33:17,340 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-02-14 21:33:17,341 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-14 21:33:17,341 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-14 21:33:17,341 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-02-14 21:33:17,341 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-02-14 21:33:17,388 INFO L235 CfgBuilder]: Building ICFG [2023-02-14 21:33:17,389 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-14 21:33:17,588 INFO L276 CfgBuilder]: Performing block encoding [2023-02-14 21:33:17,592 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-14 21:33:17,593 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2023-02-14 21:33:17,595 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.02 09:33:17 BoogieIcfgContainer [2023-02-14 21:33:17,595 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-14 21:33:17,598 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-14 21:33:17,599 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-14 21:33:17,601 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-14 21:33:17,602 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.02 09:33:17" (1/3) ... [2023-02-14 21:33:17,603 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b9fae38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.02 09:33:17, skipping insertion in model container [2023-02-14 21:33:17,603 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 09:33:17" (2/3) ... [2023-02-14 21:33:17,603 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b9fae38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.02 09:33:17, skipping insertion in model container [2023-02-14 21:33:17,603 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.02 09:33:17" (3/3) ... [2023-02-14 21:33:17,606 INFO L112 eAbstractionObserver]: Analyzing ICFG sum10-1.i [2023-02-14 21:33:17,619 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-14 21:33:17,619 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-02-14 21:33:17,664 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-14 21:33:17,669 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;@4a7dd7d1, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-14 21:33:17,670 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-02-14 21:33:17,673 INFO L276 IsEmpty]: Start isEmpty. Operand has 26 states, 20 states have (on average 1.4) internal successors, (28), 21 states have internal predecessors, (28), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-02-14 21:33:17,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-02-14 21:33:17,678 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 21:33:17,678 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 21:33:17,678 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 21:33:17,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 21:33:17,682 INFO L85 PathProgramCache]: Analyzing trace with hash -141219973, now seen corresponding path program 1 times [2023-02-14 21:33:17,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 21:33:17,688 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292406500] [2023-02-14 21:33:17,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 21:33:17,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 21:33:17,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 21:33:17,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-14 21:33:17,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 21:33:17,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-02-14 21:33:17,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 21:33:17,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-02-14 21:33:17,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 21:33:17,877 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-02-14 21:33:17,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 21:33:17,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292406500] [2023-02-14 21:33:17,878 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1292406500] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-14 21:33:17,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [615472034] [2023-02-14 21:33:17,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 21:33:17,879 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 21:33:17,879 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 21:33:17,895 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) [2023-02-14 21:33:17,904 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-14 21:33:17,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 21:33:17,964 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 2 conjunts are in the unsatisfiable core [2023-02-14 21:33:17,968 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 21:33:17,995 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-02-14 21:33:17,995 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-14 21:33:17,995 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [615472034] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 21:33:17,996 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-02-14 21:33:17,996 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2023-02-14 21:33:17,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290418688] [2023-02-14 21:33:17,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 21:33:18,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-14 21:33:18,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 21:33:18,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-14 21:33:18,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-02-14 21:33:18,023 INFO L87 Difference]: Start difference. First operand has 26 states, 20 states have (on average 1.4) internal successors, (28), 21 states have internal predecessors, (28), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-02-14 21:33:18,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 21:33:18,042 INFO L93 Difference]: Finished difference Result 50 states and 69 transitions. [2023-02-14 21:33:18,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-14 21:33:18,044 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 28 [2023-02-14 21:33:18,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 21:33:18,057 INFO L225 Difference]: With dead ends: 50 [2023-02-14 21:33:18,057 INFO L226 Difference]: Without dead ends: 24 [2023-02-14 21:33:18,059 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-02-14 21:33:18,061 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 1 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-14 21:33:18,062 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 54 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-14 21:33:18,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2023-02-14 21:33:18,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 23. [2023-02-14 21:33:18,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 18 states have internal predecessors, (21), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-02-14 21:33:18,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2023-02-14 21:33:18,084 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 28 [2023-02-14 21:33:18,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 21:33:18,084 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2023-02-14 21:33:18,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-02-14 21:33:18,085 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2023-02-14 21:33:18,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-02-14 21:33:18,086 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 21:33:18,086 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 21:33:18,093 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-02-14 21:33:18,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-02-14 21:33:18,291 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 21:33:18,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 21:33:18,292 INFO L85 PathProgramCache]: Analyzing trace with hash -618478211, now seen corresponding path program 1 times [2023-02-14 21:33:18,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 21:33:18,292 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892946839] [2023-02-14 21:33:18,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 21:33:18,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 21:33:18,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 21:33:18,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 21:33:18,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 21:33:18,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-02-14 21:33:18,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 21:33:18,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-02-14 21:33:18,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 21:33:18,434 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-02-14 21:33:18,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 21:33:18,437 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892946839] [2023-02-14 21:33:18,437 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1892946839] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-14 21:33:18,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [38941310] [2023-02-14 21:33:18,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 21:33:18,438 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 21:33:18,438 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 21:33:18,458 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) [2023-02-14 21:33:18,527 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-02-14 21:33:18,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 21:33:18,602 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 2 conjunts are in the unsatisfiable core [2023-02-14 21:33:18,603 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 21:33:18,615 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-02-14 21:33:18,616 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-14 21:33:18,617 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [38941310] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 21:33:18,617 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-02-14 21:33:18,617 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2023-02-14 21:33:18,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909415807] [2023-02-14 21:33:18,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 21:33:18,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-14 21:33:18,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 21:33:18,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-14 21:33:18,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-02-14 21:33:18,620 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2023-02-14 21:33:18,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 21:33:18,630 INFO L93 Difference]: Finished difference Result 42 states and 52 transitions. [2023-02-14 21:33:18,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-14 21:33:18,631 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 30 [2023-02-14 21:33:18,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 21:33:18,632 INFO L225 Difference]: With dead ends: 42 [2023-02-14 21:33:18,632 INFO L226 Difference]: Without dead ends: 25 [2023-02-14 21:33:18,633 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-02-14 21:33:18,634 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 1 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-14 21:33:18,635 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 46 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-14 21:33:18,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2023-02-14 21:33:18,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 24. [2023-02-14 21:33:18,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 19 states have internal predecessors, (22), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-02-14 21:33:18,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2023-02-14 21:33:18,643 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 30 [2023-02-14 21:33:18,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 21:33:18,644 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2023-02-14 21:33:18,644 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2023-02-14 21:33:18,644 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2023-02-14 21:33:18,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-02-14 21:33:18,645 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 21:33:18,645 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 21:33:18,665 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-02-14 21:33:18,868 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,SelfDestructingSolverStorable1 [2023-02-14 21:33:18,868 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 21:33:18,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 21:33:18,869 INFO L85 PathProgramCache]: Analyzing trace with hash -1511029509, now seen corresponding path program 1 times [2023-02-14 21:33:18,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 21:33:18,869 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630596946] [2023-02-14 21:33:18,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 21:33:18,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 21:33:18,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 21:33:18,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 21:33:18,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 21:33:18,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-02-14 21:33:18,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 21:33:18,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-02-14 21:33:18,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 21:33:18,957 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 9 proven. 12 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-02-14 21:33:18,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 21:33:18,958 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630596946] [2023-02-14 21:33:18,958 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1630596946] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-14 21:33:18,958 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1538648823] [2023-02-14 21:33:18,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 21:33:18,958 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 21:33:18,958 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 21:33:18,959 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) [2023-02-14 21:33:18,993 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-02-14 21:33:19,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 21:33:19,054 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 2 conjunts are in the unsatisfiable core [2023-02-14 21:33:19,062 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 21:33:19,079 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-02-14 21:33:19,090 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-14 21:33:19,090 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1538648823] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 21:33:19,091 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-02-14 21:33:19,091 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2023-02-14 21:33:19,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116175315] [2023-02-14 21:33:19,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 21:33:19,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-14 21:33:19,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 21:33:19,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-14 21:33:19,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-02-14 21:33:19,092 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-02-14 21:33:19,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 21:33:19,099 INFO L93 Difference]: Finished difference Result 39 states and 44 transitions. [2023-02-14 21:33:19,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-14 21:33:19,100 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 36 [2023-02-14 21:33:19,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 21:33:19,100 INFO L225 Difference]: With dead ends: 39 [2023-02-14 21:33:19,100 INFO L226 Difference]: Without dead ends: 26 [2023-02-14 21:33:19,101 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-02-14 21:33:19,101 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 1 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-14 21:33:19,104 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 45 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-14 21:33:19,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2023-02-14 21:33:19,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 25. [2023-02-14 21:33:19,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 20 states have (on average 1.15) internal successors, (23), 20 states have internal predecessors, (23), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-02-14 21:33:19,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 29 transitions. [2023-02-14 21:33:19,110 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 29 transitions. Word has length 36 [2023-02-14 21:33:19,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 21:33:19,111 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 29 transitions. [2023-02-14 21:33:19,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-02-14 21:33:19,111 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 29 transitions. [2023-02-14 21:33:19,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-02-14 21:33:19,112 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 21:33:19,112 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 21:33:19,118 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-02-14 21:33:19,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 21:33:19,317 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 21:33:19,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 21:33:19,318 INFO L85 PathProgramCache]: Analyzing trace with hash -1553738215, now seen corresponding path program 1 times [2023-02-14 21:33:19,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 21:33:19,319 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750406948] [2023-02-14 21:33:19,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 21:33:19,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 21:33:19,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 21:33:19,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-14 21:33:19,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 21:33:19,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-02-14 21:33:19,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 21:33:19,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-02-14 21:33:19,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 21:33:19,405 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 9 proven. 12 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-02-14 21:33:19,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 21:33:19,406 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750406948] [2023-02-14 21:33:19,406 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1750406948] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-14 21:33:19,406 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [197008559] [2023-02-14 21:33:19,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 21:33:19,407 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 21:33:19,407 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 21:33:19,408 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) [2023-02-14 21:33:19,410 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-02-14 21:33:19,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 21:33:19,466 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 3 conjunts are in the unsatisfiable core [2023-02-14 21:33:19,467 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 21:33:19,478 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-02-14 21:33:19,479 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 21:33:19,505 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-02-14 21:33:19,505 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [197008559] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-14 21:33:19,505 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-14 21:33:19,505 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4, 4] total 9 [2023-02-14 21:33:19,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806351556] [2023-02-14 21:33:19,506 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-14 21:33:19,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-02-14 21:33:19,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 21:33:19,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-02-14 21:33:19,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2023-02-14 21:33:19,507 INFO L87 Difference]: Start difference. First operand 25 states and 29 transitions. Second operand has 9 states, 9 states have (on average 4.111111111111111) internal successors, (37), 9 states have internal predecessors, (37), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-02-14 21:33:19,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 21:33:19,531 INFO L93 Difference]: Finished difference Result 54 states and 68 transitions. [2023-02-14 21:33:19,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-02-14 21:33:19,531 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.111111111111111) internal successors, (37), 9 states have internal predecessors, (37), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 38 [2023-02-14 21:33:19,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 21:33:19,532 INFO L225 Difference]: With dead ends: 54 [2023-02-14 21:33:19,532 INFO L226 Difference]: Without dead ends: 34 [2023-02-14 21:33:19,533 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2023-02-14 21:33:19,533 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 3 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-14 21:33:19,534 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 102 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-14 21:33:19,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2023-02-14 21:33:19,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 33. [2023-02-14 21:33:19,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 28 states have (on average 1.1071428571428572) internal successors, (31), 28 states have internal predecessors, (31), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-02-14 21:33:19,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2023-02-14 21:33:19,537 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 38 [2023-02-14 21:33:19,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 21:33:19,538 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2023-02-14 21:33:19,538 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.111111111111111) internal successors, (37), 9 states have internal predecessors, (37), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-02-14 21:33:19,538 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2023-02-14 21:33:19,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-02-14 21:33:19,539 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 21:33:19,539 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 21:33:19,559 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-02-14 21:33:19,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 21:33:19,743 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 21:33:19,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 21:33:19,744 INFO L85 PathProgramCache]: Analyzing trace with hash -1124150243, now seen corresponding path program 2 times [2023-02-14 21:33:19,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 21:33:19,744 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327105277] [2023-02-14 21:33:19,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 21:33:19,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 21:33:19,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 21:33:19,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-02-14 21:33:19,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 21:33:19,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-02-14 21:33:19,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 21:33:19,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-02-14 21:33:19,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 21:33:19,825 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2023-02-14 21:33:19,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 21:33:19,826 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327105277] [2023-02-14 21:33:19,826 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1327105277] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-14 21:33:19,826 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [706578583] [2023-02-14 21:33:19,826 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-14 21:33:19,826 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 21:33:19,826 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 21:33:19,844 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) [2023-02-14 21:33:19,871 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-02-14 21:33:19,920 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-14 21:33:19,921 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-14 21:33:19,922 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 6 conjunts are in the unsatisfiable core [2023-02-14 21:33:19,923 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 21:33:19,955 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2023-02-14 21:33:19,955 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 21:33:20,006 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2023-02-14 21:33:20,007 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [706578583] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-14 21:33:20,007 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-14 21:33:20,007 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 7, 7] total 14 [2023-02-14 21:33:20,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361288348] [2023-02-14 21:33:20,007 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-14 21:33:20,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-02-14 21:33:20,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 21:33:20,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-02-14 21:33:20,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2023-02-14 21:33:20,009 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand has 14 states, 14 states have (on average 3.642857142857143) internal successors, (51), 14 states have internal predecessors, (51), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-02-14 21:33:20,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 21:33:20,040 INFO L93 Difference]: Finished difference Result 70 states and 84 transitions. [2023-02-14 21:33:20,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-02-14 21:33:20,041 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.642857142857143) internal successors, (51), 14 states have internal predecessors, (51), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 50 [2023-02-14 21:33:20,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 21:33:20,041 INFO L225 Difference]: With dead ends: 70 [2023-02-14 21:33:20,041 INFO L226 Difference]: Without dead ends: 48 [2023-02-14 21:33:20,042 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2023-02-14 21:33:20,042 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 3 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-14 21:33:20,043 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 80 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-14 21:33:20,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2023-02-14 21:33:20,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 47. [2023-02-14 21:33:20,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 42 states have (on average 1.0714285714285714) internal successors, (45), 42 states have internal predecessors, (45), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-02-14 21:33:20,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 51 transitions. [2023-02-14 21:33:20,047 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 51 transitions. Word has length 50 [2023-02-14 21:33:20,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 21:33:20,048 INFO L495 AbstractCegarLoop]: Abstraction has 47 states and 51 transitions. [2023-02-14 21:33:20,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.642857142857143) internal successors, (51), 14 states have internal predecessors, (51), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-02-14 21:33:20,048 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 51 transitions. [2023-02-14 21:33:20,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-02-14 21:33:20,049 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 21:33:20,049 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 6, 6, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 21:33:20,059 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-02-14 21:33:20,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 21:33:20,254 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 21:33:20,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 21:33:20,255 INFO L85 PathProgramCache]: Analyzing trace with hash 1238744391, now seen corresponding path program 3 times [2023-02-14 21:33:20,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 21:33:20,255 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777009313] [2023-02-14 21:33:20,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 21:33:20,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 21:33:20,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 21:33:20,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-02-14 21:33:20,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 21:33:20,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-02-14 21:33:20,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 21:33:20,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-02-14 21:33:20,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 21:33:20,350 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 131 trivial. 0 not checked. [2023-02-14 21:33:20,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 21:33:20,351 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777009313] [2023-02-14 21:33:20,352 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1777009313] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-14 21:33:20,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1076065341] [2023-02-14 21:33:20,352 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-14 21:33:20,353 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 21:33:20,353 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 21:33:20,370 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) [2023-02-14 21:33:20,371 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-02-14 21:33:20,428 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-02-14 21:33:20,428 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-14 21:33:20,429 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-14 21:33:20,430 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 21:33:20,438 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 32 proven. 4 refuted. 0 times theorem prover too weak. 131 trivial. 0 not checked. [2023-02-14 21:33:20,438 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 21:33:20,464 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 32 proven. 4 refuted. 0 times theorem prover too weak. 131 trivial. 0 not checked. [2023-02-14 21:33:20,464 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1076065341] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-14 21:33:20,465 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-14 21:33:20,465 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2023-02-14 21:33:20,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771173417] [2023-02-14 21:33:20,465 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-14 21:33:20,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-02-14 21:33:20,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 21:33:20,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-02-14 21:33:20,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2023-02-14 21:33:20,466 INFO L87 Difference]: Start difference. First operand 47 states and 51 transitions. Second operand has 8 states, 8 states have (on average 5.0) internal successors, (40), 8 states have internal predecessors, (40), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-02-14 21:33:20,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 21:33:20,481 INFO L93 Difference]: Finished difference Result 78 states and 91 transitions. [2023-02-14 21:33:20,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-02-14 21:33:20,481 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 8 states have internal predecessors, (40), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 64 [2023-02-14 21:33:20,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 21:33:20,482 INFO L225 Difference]: With dead ends: 78 [2023-02-14 21:33:20,482 INFO L226 Difference]: Without dead ends: 55 [2023-02-14 21:33:20,482 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2023-02-14 21:33:20,483 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 2 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-14 21:33:20,483 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 68 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-14 21:33:20,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2023-02-14 21:33:20,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2023-02-14 21:33:20,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 50 states have (on average 1.06) internal successors, (53), 50 states have internal predecessors, (53), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-02-14 21:33:20,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 59 transitions. [2023-02-14 21:33:20,487 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 59 transitions. Word has length 64 [2023-02-14 21:33:20,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 21:33:20,487 INFO L495 AbstractCegarLoop]: Abstraction has 55 states and 59 transitions. [2023-02-14 21:33:20,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 8 states have internal predecessors, (40), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-02-14 21:33:20,487 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 59 transitions. [2023-02-14 21:33:20,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-02-14 21:33:20,488 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 21:33:20,488 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 10, 10, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 21:33:20,494 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-02-14 21:33:20,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 21:33:20,693 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 21:33:20,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 21:33:20,693 INFO L85 PathProgramCache]: Analyzing trace with hash 756543039, now seen corresponding path program 4 times [2023-02-14 21:33:20,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 21:33:20,694 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18083035] [2023-02-14 21:33:20,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 21:33:20,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 21:33:20,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 21:33:20,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-02-14 21:33:20,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 21:33:20,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-02-14 21:33:20,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 21:33:20,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-02-14 21:33:20,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 21:33:20,862 INFO L134 CoverageAnalysis]: Checked inductivity of 479 backedges. 0 proven. 212 refuted. 0 times theorem prover too weak. 267 trivial. 0 not checked. [2023-02-14 21:33:20,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 21:33:20,862 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18083035] [2023-02-14 21:33:20,862 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [18083035] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-14 21:33:20,862 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1623927756] [2023-02-14 21:33:20,862 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-02-14 21:33:20,863 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 21:33:20,863 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 21:33:20,864 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) [2023-02-14 21:33:20,866 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-02-14 21:33:20,936 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-02-14 21:33:20,936 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-14 21:33:20,937 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 8 conjunts are in the unsatisfiable core [2023-02-14 21:33:20,939 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 21:33:20,956 INFO L134 CoverageAnalysis]: Checked inductivity of 479 backedges. 172 proven. 36 refuted. 0 times theorem prover too weak. 271 trivial. 0 not checked. [2023-02-14 21:33:20,956 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 21:33:21,013 INFO L134 CoverageAnalysis]: Checked inductivity of 479 backedges. 0 proven. 212 refuted. 0 times theorem prover too weak. 267 trivial. 0 not checked. [2023-02-14 21:33:21,014 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1623927756] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-14 21:33:21,014 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-14 21:33:21,014 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 12 [2023-02-14 21:33:21,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45588936] [2023-02-14 21:33:21,014 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-14 21:33:21,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-02-14 21:33:21,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 21:33:21,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-02-14 21:33:21,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2023-02-14 21:33:21,016 INFO L87 Difference]: Start difference. First operand 55 states and 59 transitions. Second operand has 12 states, 12 states have (on average 4.0) internal successors, (48), 12 states have internal predecessors, (48), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2023-02-14 21:33:21,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 21:33:21,037 INFO L93 Difference]: Finished difference Result 94 states and 107 transitions. [2023-02-14 21:33:21,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-02-14 21:33:21,037 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.0) internal successors, (48), 12 states have internal predecessors, (48), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) Word has length 88 [2023-02-14 21:33:21,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 21:33:21,038 INFO L225 Difference]: With dead ends: 94 [2023-02-14 21:33:21,038 INFO L226 Difference]: Without dead ends: 63 [2023-02-14 21:33:21,038 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 175 SyntacticMatches, 4 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2023-02-14 21:33:21,039 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 1 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-14 21:33:21,039 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 90 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-14 21:33:21,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2023-02-14 21:33:21,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2023-02-14 21:33:21,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 58 states have (on average 1.0517241379310345) internal successors, (61), 58 states have internal predecessors, (61), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-02-14 21:33:21,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 67 transitions. [2023-02-14 21:33:21,043 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 67 transitions. Word has length 88 [2023-02-14 21:33:21,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 21:33:21,044 INFO L495 AbstractCegarLoop]: Abstraction has 63 states and 67 transitions. [2023-02-14 21:33:21,044 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.0) internal successors, (48), 12 states have internal predecessors, (48), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2023-02-14 21:33:21,044 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 67 transitions. [2023-02-14 21:33:21,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-02-14 21:33:21,045 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 21:33:21,045 INFO L195 NwaCegarLoop]: trace histogram [30, 30, 10, 10, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 21:33:21,051 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-02-14 21:33:21,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 21:33:21,250 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 21:33:21,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 21:33:21,250 INFO L85 PathProgramCache]: Analyzing trace with hash 953202487, now seen corresponding path program 5 times [2023-02-14 21:33:21,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 21:33:21,251 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553092895] [2023-02-14 21:33:21,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 21:33:21,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 21:33:21,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 21:33:21,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-02-14 21:33:21,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 21:33:21,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-02-14 21:33:21,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 21:33:21,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-02-14 21:33:21,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 21:33:21,336 INFO L134 CoverageAnalysis]: Checked inductivity of 1079 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1075 trivial. 0 not checked. [2023-02-14 21:33:21,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 21:33:21,337 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553092895] [2023-02-14 21:33:21,337 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [553092895] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-14 21:33:21,337 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1828677268] [2023-02-14 21:33:21,337 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-02-14 21:33:21,337 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 21:33:21,337 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 21:33:21,338 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) [2023-02-14 21:33:21,340 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-02-14 21:33:21,599 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 22 check-sat command(s) [2023-02-14 21:33:21,599 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-14 21:33:21,602 INFO L263 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-14 21:33:21,604 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 21:33:21,616 INFO L134 CoverageAnalysis]: Checked inductivity of 1079 backedges. 450 proven. 4 refuted. 0 times theorem prover too weak. 625 trivial. 0 not checked. [2023-02-14 21:33:21,616 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 21:33:21,642 INFO L134 CoverageAnalysis]: Checked inductivity of 1079 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1075 trivial. 0 not checked. [2023-02-14 21:33:21,643 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1828677268] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-14 21:33:21,643 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-14 21:33:21,643 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2023-02-14 21:33:21,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681284819] [2023-02-14 21:33:21,643 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-14 21:33:21,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-02-14 21:33:21,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 21:33:21,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-02-14 21:33:21,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2023-02-14 21:33:21,644 INFO L87 Difference]: Start difference. First operand 63 states and 67 transitions. Second operand has 9 states, 9 states have (on average 4.111111111111111) internal successors, (37), 9 states have internal predecessors, (37), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-02-14 21:33:21,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 21:33:21,660 INFO L93 Difference]: Finished difference Result 102 states and 110 transitions. [2023-02-14 21:33:21,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-02-14 21:33:21,660 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.111111111111111) internal successors, (37), 9 states have internal predecessors, (37), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 112 [2023-02-14 21:33:21,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 21:33:21,661 INFO L225 Difference]: With dead ends: 102 [2023-02-14 21:33:21,661 INFO L226 Difference]: Without dead ends: 71 [2023-02-14 21:33:21,661 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 226 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2023-02-14 21:33:21,662 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 2 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-14 21:33:21,662 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 66 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-14 21:33:21,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2023-02-14 21:33:21,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2023-02-14 21:33:21,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 66 states have (on average 1.0454545454545454) internal successors, (69), 66 states have internal predecessors, (69), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-02-14 21:33:21,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 75 transitions. [2023-02-14 21:33:21,666 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 75 transitions. Word has length 112 [2023-02-14 21:33:21,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 21:33:21,666 INFO L495 AbstractCegarLoop]: Abstraction has 71 states and 75 transitions. [2023-02-14 21:33:21,666 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.111111111111111) internal successors, (37), 9 states have internal predecessors, (37), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-02-14 21:33:21,666 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 75 transitions. [2023-02-14 21:33:21,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2023-02-14 21:33:21,667 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 21:33:21,667 INFO L195 NwaCegarLoop]: trace histogram [30, 30, 10, 10, 6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 21:33:21,677 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-02-14 21:33:21,873 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,SelfDestructingSolverStorable7 [2023-02-14 21:33:21,874 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 21:33:21,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 21:33:21,874 INFO L85 PathProgramCache]: Analyzing trace with hash -1215823185, now seen corresponding path program 6 times [2023-02-14 21:33:21,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 21:33:21,875 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800970751] [2023-02-14 21:33:21,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 21:33:21,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 21:33:21,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 21:33:21,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-02-14 21:33:21,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 21:33:21,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-02-14 21:33:21,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 21:33:21,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-02-14 21:33:21,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 21:33:22,011 INFO L134 CoverageAnalysis]: Checked inductivity of 1111 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 1075 trivial. 0 not checked. [2023-02-14 21:33:22,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 21:33:22,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800970751] [2023-02-14 21:33:22,011 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1800970751] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-14 21:33:22,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1287656642] [2023-02-14 21:33:22,012 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-02-14 21:33:22,012 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 21:33:22,012 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 21:33:22,025 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) [2023-02-14 21:33:22,052 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-02-14 21:33:22,342 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 15 check-sat command(s) [2023-02-14 21:33:22,342 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-14 21:33:22,345 INFO L263 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 8 conjunts are in the unsatisfiable core [2023-02-14 21:33:22,347 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 21:33:22,372 INFO L134 CoverageAnalysis]: Checked inductivity of 1111 backedges. 450 proven. 36 refuted. 0 times theorem prover too weak. 625 trivial. 0 not checked. [2023-02-14 21:33:22,372 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 21:33:22,434 INFO L134 CoverageAnalysis]: Checked inductivity of 1111 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 1075 trivial. 0 not checked. [2023-02-14 21:33:22,435 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1287656642] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-14 21:33:22,435 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-14 21:33:22,435 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 12 [2023-02-14 21:33:22,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926547118] [2023-02-14 21:33:22,435 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-14 21:33:22,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-02-14 21:33:22,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 21:33:22,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-02-14 21:33:22,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2023-02-14 21:33:22,436 INFO L87 Difference]: Start difference. First operand 71 states and 75 transitions. Second operand has 12 states, 12 states have (on average 3.75) internal successors, (45), 12 states have internal predecessors, (45), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-02-14 21:33:22,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 21:33:22,465 INFO L93 Difference]: Finished difference Result 108 states and 115 transitions. [2023-02-14 21:33:22,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-02-14 21:33:22,465 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.75) internal successors, (45), 12 states have internal predecessors, (45), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 120 [2023-02-14 21:33:22,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 21:33:22,469 INFO L225 Difference]: With dead ends: 108 [2023-02-14 21:33:22,469 INFO L226 Difference]: Without dead ends: 77 [2023-02-14 21:33:22,469 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 238 SyntacticMatches, 5 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2023-02-14 21:33:22,471 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 1 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-14 21:33:22,471 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 108 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-14 21:33:22,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2023-02-14 21:33:22,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2023-02-14 21:33:22,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 72 states have (on average 1.0416666666666667) internal successors, (75), 72 states have internal predecessors, (75), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-02-14 21:33:22,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 81 transitions. [2023-02-14 21:33:22,476 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 81 transitions. Word has length 120 [2023-02-14 21:33:22,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 21:33:22,476 INFO L495 AbstractCegarLoop]: Abstraction has 77 states and 81 transitions. [2023-02-14 21:33:22,476 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.75) internal successors, (45), 12 states have internal predecessors, (45), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-02-14 21:33:22,476 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 81 transitions. [2023-02-14 21:33:22,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2023-02-14 21:33:22,477 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 21:33:22,477 INFO L195 NwaCegarLoop]: trace histogram [30, 30, 10, 10, 9, 9, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 21:33:22,483 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-02-14 21:33:22,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 21:33:22,683 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 21:33:22,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 21:33:22,683 INFO L85 PathProgramCache]: Analyzing trace with hash 1982748809, now seen corresponding path program 7 times [2023-02-14 21:33:22,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 21:33:22,683 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348446689] [2023-02-14 21:33:22,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 21:33:22,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 21:33:23,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 21:33:45,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-02-14 21:33:45,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 21:33:47,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-02-14 21:33:47,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 21:33:48,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-02-14 21:33:48,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 21:33:51,011 INFO L134 CoverageAnalysis]: Checked inductivity of 1156 backedges. 0 proven. 1125 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-02-14 21:33:51,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 21:33:51,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348446689] [2023-02-14 21:33:51,011 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [348446689] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-14 21:33:51,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1037118990] [2023-02-14 21:33:51,011 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-02-14 21:33:51,012 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 21:33:51,012 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 21:33:51,013 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) [2023-02-14 21:33:51,015 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-02-14 21:33:51,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 21:33:51,633 WARN L261 TraceCheckSpWp]: Trace formula consists of 430 conjuncts, 265 conjunts are in the unsatisfiable core [2023-02-14 21:33:51,652 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 21:33:51,776 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-02-14 21:33:52,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 21:33:52,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 21:33:52,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 21:33:52,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 21:33:52,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 21:33:52,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 21:33:52,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 21:33:52,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 21:33:52,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 21:33:52,891 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-14 21:33:52,892 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 45 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 464 treesize of output 178 [2023-02-14 21:33:54,511 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 21:33:54,512 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 21:33:54,513 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 21:33:54,513 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 21:33:54,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 21:33:54,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 21:33:54,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 21:33:54,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 21:33:54,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 21:33:54,517 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-14 21:33:54,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 21:33:54,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 21:33:54,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 21:33:54,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 21:33:54,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 21:33:54,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 21:33:54,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 21:33:54,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 21:33:54,522 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-14 21:33:54,531 INFO L321 Elim1Store]: treesize reduction 2, result has 33.3 percent of original size [2023-02-14 21:33:54,531 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 45 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 55 case distinctions, treesize of input 844 treesize of output 307 [2023-02-14 21:33:55,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 21:33:55,155 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 21:33:55,156 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 21:33:55,156 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 21:33:55,157 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 21:33:55,158 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 21:33:55,158 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 21:33:55,159 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 21:33:55,159 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-14 21:33:55,160 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 21:33:55,160 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 21:33:55,161 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 21:33:55,161 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 21:33:55,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 21:33:55,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 21:33:55,163 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-14 21:33:55,164 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 21:33:55,164 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 21:33:55,165 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 21:33:55,166 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 21:33:55,166 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 21:33:55,167 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 21:33:55,167 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 21:33:55,171 INFO L321 Elim1Store]: treesize reduction 2, result has 33.3 percent of original size [2023-02-14 21:33:55,171 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 45 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 55 case distinctions, treesize of input 810 treesize of output 307 [2023-02-14 21:33:55,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 21:33:55,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 21:33:55,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 21:33:55,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 21:33:55,911 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-14 21:33:55,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 21:33:55,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 21:33:55,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 21:33:55,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 21:33:55,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 21:33:55,915 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-14 21:33:55,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 21:33:55,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 21:33:55,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 21:33:55,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 21:33:55,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 21:33:55,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 21:33:55,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 21:33:55,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 21:33:55,922 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 21:33:55,923 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 21:33:55,923 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 21:33:55,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 21:33:55,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 21:33:55,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 21:33:55,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 21:33:55,933 INFO L321 Elim1Store]: treesize reduction 4, result has 42.9 percent of original size [2023-02-14 21:33:55,934 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 45 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 66 case distinctions, treesize of input 794 treesize of output 310 [2023-02-14 21:33:56,558 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-14 21:33:56,559 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 21:33:56,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 21:33:56,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 21:33:56,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 21:33:56,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 21:33:56,565 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 21:33:56,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 21:33:56,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 21:33:56,568 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 21:33:56,568 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 21:33:56,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 21:33:56,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 21:33:56,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 21:33:56,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 21:33:56,571 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 21:33:56,572 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 21:33:56,572 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 21:33:56,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 21:33:56,574 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 21:33:56,580 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 21:33:56,580 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-14 21:33:56,581 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 21:33:56,582 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 21:33:56,583 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 21:33:56,584 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 21:33:56,586 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 21:33:56,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 21:33:56,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 21:33:56,593 INFO L321 Elim1Store]: treesize reduction 4, result has 42.9 percent of original size [2023-02-14 21:33:56,594 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 45 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 66 case distinctions, treesize of input 797 treesize of output 313 [2023-02-14 21:33:57,377 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 21:33:57,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 21:33:57,379 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 21:33:57,379 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 21:33:57,380 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-14 21:33:57,380 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 21:33:57,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 21:33:57,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 21:33:57,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 21:33:57,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 21:33:57,384 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-14 21:33:57,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 21:33:57,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 21:33:57,386 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 21:33:57,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 21:33:57,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 21:33:57,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 21:33:57,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 21:33:57,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 21:33:57,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 21:33:57,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 21:33:57,394 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 21:33:57,394 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 21:33:57,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 21:33:57,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 21:33:57,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 21:33:57,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 21:33:57,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 21:33:57,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 21:33:57,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 21:33:57,405 INFO L321 Elim1Store]: treesize reduction 4, result has 42.9 percent of original size [2023-02-14 21:33:57,406 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 45 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 66 case distinctions, treesize of input 827 treesize of output 316 [2023-02-14 21:33:58,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 21:33:58,097 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 21:33:58,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 21:33:58,099 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-14 21:33:58,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 21:33:58,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 21:33:58,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 21:33:58,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 21:33:58,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 21:33:58,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 21:33:58,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 21:33:58,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 21:33:58,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 21:33:58,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 21:33:58,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 21:33:58,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 21:33:58,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 21:33:58,108 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-14 21:33:58,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 21:33:58,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 21:33:58,110 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 21:33:58,110 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 21:33:58,111 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 21:33:58,111 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 21:33:58,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 21:33:58,120 INFO L321 Elim1Store]: treesize reduction 2, result has 33.3 percent of original size [2023-02-14 21:33:58,120 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 45 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 55 case distinctions, treesize of input 792 treesize of output 307 [2023-02-14 21:33:58,763 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 21:33:58,763 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 21:33:58,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 21:33:58,765 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 21:33:58,765 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 21:33:58,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 21:33:58,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 21:33:58,767 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-14 21:33:58,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 21:33:58,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 21:33:58,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 21:33:58,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 21:33:58,770 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-14 21:33:58,770 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 21:33:58,771 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 21:33:58,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 21:33:58,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 21:33:58,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 21:33:58,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 21:33:58,774 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 21:33:58,777 INFO L321 Elim1Store]: treesize reduction 2, result has 33.3 percent of original size [2023-02-14 21:33:58,778 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 45 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 55 case distinctions, treesize of input 792 treesize of output 307 [2023-02-14 21:33:59,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 21:33:59,458 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-14 21:33:59,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 21:33:59,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 21:33:59,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 21:33:59,461 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 21:33:59,461 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 21:33:59,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 21:33:59,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 21:33:59,463 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 21:33:59,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 21:33:59,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 21:33:59,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 21:33:59,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 21:33:59,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 21:33:59,466 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-14 21:33:59,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 21:33:59,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 21:33:59,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 21:33:59,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 21:33:59,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 21:33:59,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 21:33:59,471 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 21:33:59,474 INFO L321 Elim1Store]: treesize reduction 2, result has 33.3 percent of original size [2023-02-14 21:33:59,475 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 45 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 55 case distinctions, treesize of input 792 treesize of output 307 [2023-02-14 21:34:00,133 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 21:34:00,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 21:34:00,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 21:34:00,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 21:34:00,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 21:34:00,138 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 21:34:00,138 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 21:34:00,139 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 21:34:00,139 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 21:34:00,143 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-14 21:34:00,144 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 45 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 787 treesize of output 284 [2023-02-14 21:34:00,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 21:34:00,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 21:34:00,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 21:34:00,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 21:34:00,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 21:34:00,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 21:34:00,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 21:34:00,639 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 21:34:00,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 21:34:00,642 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-14 21:34:00,643 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 45 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 112 treesize of output 106 [2023-02-14 21:34:01,732 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-14 21:34:01,732 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 10 select indices, 10 select index equivalence classes, 45 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 633 treesize of output 193 [2023-02-14 21:34:02,234 INFO L134 CoverageAnalysis]: Checked inductivity of 1156 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2023-02-14 21:34:02,234 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 21:34:19,638 INFO L134 CoverageAnalysis]: Checked inductivity of 1156 backedges. 4 proven. 981 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2023-02-14 21:34:19,638 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1037118990] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-14 21:34:19,639 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-14 21:34:19,639 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [78, 58, 48] total 144 [2023-02-14 21:34:19,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265690088] [2023-02-14 21:34:19,639 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-14 21:34:19,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 144 states [2023-02-14 21:34:19,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 21:34:19,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 144 interpolants. [2023-02-14 21:34:19,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=623, Invalid=19969, Unknown=0, NotChecked=0, Total=20592 [2023-02-14 21:34:19,645 INFO L87 Difference]: Start difference. First operand 77 states and 81 transitions. Second operand has 144 states, 140 states have (on average 1.2285714285714286) internal successors, (172), 136 states have internal predecessors, (172), 6 states have call successors, (6), 1 states have call predecessors, (6), 4 states have return successors, (8), 8 states have call predecessors, (8), 6 states have call successors, (8) [2023-02-14 21:34:32,387 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-14 21:35:26,657 WARN L233 SmtUtils]: Spent 43.57s on a formula simplification. DAG size of input: 458 DAG size of output: 88 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)