./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-patterns/array4_pattern.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b5317dae 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/array-patterns/array4_pattern.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 51462516d41bb1edc1c2003475b488124e11e4eb166822052c5d908cea262957 --- Real Ultimate output --- This is Ultimate 0.2.2-?-b5317da-m [2023-02-16 00:08:28,401 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-16 00:08:28,403 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-16 00:08:28,434 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-16 00:08:28,435 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-16 00:08:28,437 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-16 00:08:28,440 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-16 00:08:28,442 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-16 00:08:28,443 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-16 00:08:28,447 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-16 00:08:28,447 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-16 00:08:28,449 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-16 00:08:28,449 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-16 00:08:28,451 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-16 00:08:28,452 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-16 00:08:28,453 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-16 00:08:28,454 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-16 00:08:28,455 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-16 00:08:28,456 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-16 00:08:28,460 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-16 00:08:28,462 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-16 00:08:28,463 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-16 00:08:28,464 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-16 00:08:28,464 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-16 00:08:28,470 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-16 00:08:28,470 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-16 00:08:28,471 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-16 00:08:28,472 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-16 00:08:28,472 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-16 00:08:28,472 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-16 00:08:28,473 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-16 00:08:28,473 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-16 00:08:28,474 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-16 00:08:28,475 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-16 00:08:28,476 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-16 00:08:28,476 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-16 00:08:28,476 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-16 00:08:28,476 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-16 00:08:28,477 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-16 00:08:28,478 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-16 00:08:28,478 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-16 00:08:28,479 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-02-16 00:08:28,501 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-16 00:08:28,502 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-16 00:08:28,502 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-16 00:08:28,502 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-16 00:08:28,503 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-16 00:08:28,503 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-16 00:08:28,503 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-16 00:08:28,504 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-16 00:08:28,504 INFO L138 SettingsManager]: * Use SBE=true [2023-02-16 00:08:28,504 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-16 00:08:28,505 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-16 00:08:28,505 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-16 00:08:28,505 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-16 00:08:28,505 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-16 00:08:28,505 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-16 00:08:28,505 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-16 00:08:28,505 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-16 00:08:28,506 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-16 00:08:28,506 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-16 00:08:28,506 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-16 00:08:28,506 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-16 00:08:28,506 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-16 00:08:28,506 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-16 00:08:28,507 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-16 00:08:28,507 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-16 00:08:28,507 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-16 00:08:28,507 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-16 00:08:28,507 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-16 00:08:28,507 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-16 00:08:28,507 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-16 00:08:28,508 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-16 00:08:28,508 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-16 00:08:28,508 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-16 00:08:28,508 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-16 00:08:28,508 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-16 00:08:28,508 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 51462516d41bb1edc1c2003475b488124e11e4eb166822052c5d908cea262957 [2023-02-16 00:08:28,697 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-16 00:08:28,717 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-16 00:08:28,718 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-16 00:08:28,719 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-16 00:08:28,719 INFO L275 PluginConnector]: CDTParser initialized [2023-02-16 00:08:28,720 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-patterns/array4_pattern.c [2023-02-16 00:08:29,790 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-16 00:08:30,051 INFO L351 CDTParser]: Found 1 translation units. [2023-02-16 00:08:30,051 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-patterns/array4_pattern.c [2023-02-16 00:08:30,055 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4d33c6932/df3d1b321a7540e1bc5d323946b03eb9/FLAG0a6e71836 [2023-02-16 00:08:30,065 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4d33c6932/df3d1b321a7540e1bc5d323946b03eb9 [2023-02-16 00:08:30,066 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-16 00:08:30,067 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-16 00:08:30,069 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-16 00:08:30,069 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-16 00:08:30,071 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-16 00:08:30,072 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.02 12:08:30" (1/1) ... [2023-02-16 00:08:30,072 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@125de07b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 12:08:30, skipping insertion in model container [2023-02-16 00:08:30,073 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.02 12:08:30" (1/1) ... [2023-02-16 00:08:30,078 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-16 00:08:30,090 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-16 00:08:30,209 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/array-patterns/array4_pattern.c[1835,1848] [2023-02-16 00:08:30,238 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-16 00:08:30,245 INFO L203 MainTranslator]: Completed pre-run [2023-02-16 00:08:30,254 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/array-patterns/array4_pattern.c[1835,1848] [2023-02-16 00:08:30,264 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-16 00:08:30,273 INFO L208 MainTranslator]: Completed translation [2023-02-16 00:08:30,274 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 12:08:30 WrapperNode [2023-02-16 00:08:30,274 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-16 00:08:30,275 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-16 00:08:30,275 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-16 00:08:30,275 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-16 00:08:30,280 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 12:08:30" (1/1) ... [2023-02-16 00:08:30,284 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 12:08:30" (1/1) ... [2023-02-16 00:08:30,298 INFO L138 Inliner]: procedures = 16, calls = 27, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 93 [2023-02-16 00:08:30,299 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-16 00:08:30,300 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-16 00:08:30,300 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-16 00:08:30,300 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-16 00:08:30,306 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 12:08:30" (1/1) ... [2023-02-16 00:08:30,306 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 12:08:30" (1/1) ... [2023-02-16 00:08:30,307 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 12:08:30" (1/1) ... [2023-02-16 00:08:30,308 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 12:08:30" (1/1) ... [2023-02-16 00:08:30,311 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 12:08:30" (1/1) ... [2023-02-16 00:08:30,313 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 12:08:30" (1/1) ... [2023-02-16 00:08:30,315 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 12:08:30" (1/1) ... [2023-02-16 00:08:30,315 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 12:08:30" (1/1) ... [2023-02-16 00:08:30,317 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-16 00:08:30,317 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-16 00:08:30,317 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-16 00:08:30,318 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-16 00:08:30,318 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 12:08:30" (1/1) ... [2023-02-16 00:08:30,331 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-16 00:08:30,339 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 00:08:30,364 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) [2023-02-16 00:08:30,371 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 [2023-02-16 00:08:30,411 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-16 00:08:30,411 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-02-16 00:08:30,411 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-02-16 00:08:30,412 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-16 00:08:30,412 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-02-16 00:08:30,412 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-02-16 00:08:30,412 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-16 00:08:30,413 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-16 00:08:30,413 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-02-16 00:08:30,413 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-02-16 00:08:30,465 INFO L235 CfgBuilder]: Building ICFG [2023-02-16 00:08:30,466 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-16 00:08:30,658 INFO L276 CfgBuilder]: Performing block encoding [2023-02-16 00:08:30,668 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-16 00:08:30,669 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2023-02-16 00:08:30,670 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.02 12:08:30 BoogieIcfgContainer [2023-02-16 00:08:30,671 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-16 00:08:30,673 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-16 00:08:30,679 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-16 00:08:30,682 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-16 00:08:30,682 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.02 12:08:30" (1/3) ... [2023-02-16 00:08:30,683 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4163ce9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.02 12:08:30, skipping insertion in model container [2023-02-16 00:08:30,683 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 12:08:30" (2/3) ... [2023-02-16 00:08:30,683 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4163ce9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.02 12:08:30, skipping insertion in model container [2023-02-16 00:08:30,684 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.02 12:08:30" (3/3) ... [2023-02-16 00:08:30,685 INFO L112 eAbstractionObserver]: Analyzing ICFG array4_pattern.c [2023-02-16 00:08:30,698 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-16 00:08:30,699 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-02-16 00:08:30,731 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-16 00:08:30,736 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;@67e58615, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-16 00:08:30,736 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-02-16 00:08:30,739 INFO L276 IsEmpty]: Start isEmpty. Operand has 33 states, 25 states have (on average 1.44) internal successors, (36), 26 states have internal predecessors, (36), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-02-16 00:08:30,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-02-16 00:08:30,744 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 00:08:30,744 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 00:08:30,745 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 00:08:30,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 00:08:30,749 INFO L85 PathProgramCache]: Analyzing trace with hash 1359011546, now seen corresponding path program 1 times [2023-02-16 00:08:30,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 00:08:30,756 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895091508] [2023-02-16 00:08:30,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:08:30,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 00:08:30,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:08:30,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 00:08:30,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:08:30,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 00:08:30,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 00:08:30,877 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895091508] [2023-02-16 00:08:30,877 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [895091508] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 00:08:30,877 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 00:08:30,878 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-16 00:08:30,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725982743] [2023-02-16 00:08:30,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 00:08:30,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-02-16 00:08:30,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 00:08:30,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-02-16 00:08:30,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-16 00:08:30,902 INFO L87 Difference]: Start difference. First operand has 33 states, 25 states have (on average 1.44) internal successors, (36), 26 states have internal predecessors, (36), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-16 00:08:30,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 00:08:30,915 INFO L93 Difference]: Finished difference Result 63 states and 93 transitions. [2023-02-16 00:08:30,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-02-16 00:08:30,917 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2023-02-16 00:08:30,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 00:08:30,921 INFO L225 Difference]: With dead ends: 63 [2023-02-16 00:08:30,921 INFO L226 Difference]: Without dead ends: 29 [2023-02-16 00:08:30,923 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-16 00:08:30,925 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-16 00:08:30,926 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-16 00:08:30,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2023-02-16 00:08:30,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2023-02-16 00:08:30,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 22 states have internal predecessors, (26), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-02-16 00:08:30,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 36 transitions. [2023-02-16 00:08:30,951 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 36 transitions. Word has length 16 [2023-02-16 00:08:30,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 00:08:30,951 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 36 transitions. [2023-02-16 00:08:30,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-16 00:08:30,951 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 36 transitions. [2023-02-16 00:08:30,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-02-16 00:08:30,953 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 00:08:30,953 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 00:08:30,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-02-16 00:08:30,954 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 00:08:30,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 00:08:30,956 INFO L85 PathProgramCache]: Analyzing trace with hash -852430543, now seen corresponding path program 1 times [2023-02-16 00:08:30,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 00:08:30,957 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978099081] [2023-02-16 00:08:30,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:08:30,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 00:08:30,993 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-16 00:08:30,995 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2129339408] [2023-02-16 00:08:30,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:08:30,996 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 00:08:30,996 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 00:08:30,999 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) [2023-02-16 00:08:31,000 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-16 00:08:31,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:08:31,078 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 2 conjunts are in the unsatisfiable core [2023-02-16 00:08:31,083 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 00:08:31,125 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-02-16 00:08:31,126 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-16 00:08:31,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 00:08:31,126 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978099081] [2023-02-16 00:08:31,126 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-16 00:08:31,127 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2129339408] [2023-02-16 00:08:31,127 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2129339408] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 00:08:31,127 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 00:08:31,127 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-16 00:08:31,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85955194] [2023-02-16 00:08:31,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 00:08:31,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-16 00:08:31,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 00:08:31,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-16 00:08:31,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-16 00:08:31,130 INFO L87 Difference]: Start difference. First operand 29 states and 36 transitions. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-02-16 00:08:31,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 00:08:31,181 INFO L93 Difference]: Finished difference Result 70 states and 88 transitions. [2023-02-16 00:08:31,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-16 00:08:31,181 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 42 [2023-02-16 00:08:31,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 00:08:31,182 INFO L225 Difference]: With dead ends: 70 [2023-02-16 00:08:31,182 INFO L226 Difference]: Without dead ends: 48 [2023-02-16 00:08:31,183 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-16 00:08:31,184 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 8 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-16 00:08:31,184 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 53 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-16 00:08:31,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2023-02-16 00:08:31,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 38. [2023-02-16 00:08:31,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 27 states have (on average 1.1481481481481481) internal successors, (31), 27 states have internal predecessors, (31), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-02-16 00:08:31,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 49 transitions. [2023-02-16 00:08:31,194 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 49 transitions. Word has length 42 [2023-02-16 00:08:31,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 00:08:31,195 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 49 transitions. [2023-02-16 00:08:31,195 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-02-16 00:08:31,195 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 49 transitions. [2023-02-16 00:08:31,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-02-16 00:08:31,196 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 00:08:31,197 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 00:08:31,202 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-02-16 00:08:31,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 00:08:31,403 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 00:08:31,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 00:08:31,403 INFO L85 PathProgramCache]: Analyzing trace with hash -1661777169, now seen corresponding path program 1 times [2023-02-16 00:08:31,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 00:08:31,404 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045316541] [2023-02-16 00:08:31,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:08:31,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 00:08:31,428 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-16 00:08:31,428 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1497580319] [2023-02-16 00:08:31,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:08:31,428 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 00:08:31,429 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 00:08:31,430 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) [2023-02-16 00:08:31,432 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-02-16 00:08:31,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:08:31,491 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 8 conjunts are in the unsatisfiable core [2023-02-16 00:08:31,493 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 00:08:31,538 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-02-16 00:08:31,539 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-16 00:08:31,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 00:08:31,539 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045316541] [2023-02-16 00:08:31,539 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-16 00:08:31,540 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1497580319] [2023-02-16 00:08:31,540 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1497580319] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 00:08:31,540 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 00:08:31,540 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-16 00:08:31,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537264640] [2023-02-16 00:08:31,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 00:08:31,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-16 00:08:31,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 00:08:31,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-16 00:08:31,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-16 00:08:31,542 INFO L87 Difference]: Start difference. First operand 38 states and 49 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-02-16 00:08:31,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 00:08:31,559 INFO L93 Difference]: Finished difference Result 43 states and 54 transitions. [2023-02-16 00:08:31,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-16 00:08:31,559 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 42 [2023-02-16 00:08:31,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 00:08:31,560 INFO L225 Difference]: With dead ends: 43 [2023-02-16 00:08:31,560 INFO L226 Difference]: Without dead ends: 39 [2023-02-16 00:08:31,561 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-02-16 00:08:31,562 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 5 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-16 00:08:31,562 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 81 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-16 00:08:31,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2023-02-16 00:08:31,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2023-02-16 00:08:31,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 28 states have (on average 1.1428571428571428) internal successors, (32), 28 states have internal predecessors, (32), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-02-16 00:08:31,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 50 transitions. [2023-02-16 00:08:31,568 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 50 transitions. Word has length 42 [2023-02-16 00:08:31,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 00:08:31,568 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 50 transitions. [2023-02-16 00:08:31,568 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-02-16 00:08:31,569 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 50 transitions. [2023-02-16 00:08:31,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2023-02-16 00:08:31,579 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 00:08:31,579 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 00:08:31,586 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-02-16 00:08:31,784 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,SelfDestructingSolverStorable2 [2023-02-16 00:08:31,785 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 00:08:31,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 00:08:31,786 INFO L85 PathProgramCache]: Analyzing trace with hash 813208561, now seen corresponding path program 1 times [2023-02-16 00:08:31,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 00:08:31,786 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741582151] [2023-02-16 00:08:31,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:08:31,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 00:08:31,814 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-16 00:08:31,815 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1228203862] [2023-02-16 00:08:31,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:08:31,815 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 00:08:31,815 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 00:08:31,817 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) [2023-02-16 00:08:31,851 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-02-16 00:08:31,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:08:31,911 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-16 00:08:31,913 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 00:08:31,985 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-02-16 00:08:31,987 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-16 00:08:31,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 00:08:31,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741582151] [2023-02-16 00:08:31,988 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-16 00:08:31,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1228203862] [2023-02-16 00:08:31,988 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1228203862] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 00:08:31,988 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 00:08:31,988 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-16 00:08:31,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434891273] [2023-02-16 00:08:31,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 00:08:31,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-16 00:08:31,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 00:08:31,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-16 00:08:31,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-02-16 00:08:31,992 INFO L87 Difference]: Start difference. First operand 39 states and 50 transitions. Second operand has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-02-16 00:08:32,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 00:08:32,081 INFO L93 Difference]: Finished difference Result 77 states and 98 transitions. [2023-02-16 00:08:32,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-16 00:08:32,081 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 44 [2023-02-16 00:08:32,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 00:08:32,082 INFO L225 Difference]: With dead ends: 77 [2023-02-16 00:08:32,082 INFO L226 Difference]: Without dead ends: 43 [2023-02-16 00:08:32,083 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-02-16 00:08:32,084 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 10 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-16 00:08:32,084 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 102 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-16 00:08:32,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2023-02-16 00:08:32,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 40. [2023-02-16 00:08:32,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 29 states have (on average 1.1379310344827587) internal successors, (33), 29 states have internal predecessors, (33), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-02-16 00:08:32,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 51 transitions. [2023-02-16 00:08:32,090 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 51 transitions. Word has length 44 [2023-02-16 00:08:32,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 00:08:32,090 INFO L495 AbstractCegarLoop]: Abstraction has 40 states and 51 transitions. [2023-02-16 00:08:32,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-02-16 00:08:32,091 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 51 transitions. [2023-02-16 00:08:32,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-02-16 00:08:32,091 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 00:08:32,092 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 00:08:32,099 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-02-16 00:08:32,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 00:08:32,298 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 00:08:32,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 00:08:32,299 INFO L85 PathProgramCache]: Analyzing trace with hash -1843316237, now seen corresponding path program 1 times [2023-02-16 00:08:32,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 00:08:32,299 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399744938] [2023-02-16 00:08:32,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:08:32,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 00:08:32,320 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-16 00:08:32,320 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1163447690] [2023-02-16 00:08:32,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:08:32,320 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 00:08:32,321 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 00:08:32,322 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) [2023-02-16 00:08:32,324 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-02-16 00:08:32,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:08:32,399 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 57 conjunts are in the unsatisfiable core [2023-02-16 00:08:32,404 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 00:08:32,467 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2023-02-16 00:08:32,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 00:08:32,516 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 18 [2023-02-16 00:08:32,521 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 12 treesize of output 11 [2023-02-16 00:08:33,109 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-16 00:08:33,110 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 28 [2023-02-16 00:08:33,259 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-16 00:08:33,264 INFO L321 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2023-02-16 00:08:33,265 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 17 [2023-02-16 00:08:33,290 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 10 proven. 24 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-02-16 00:08:33,290 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 00:08:41,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 00:08:41,453 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399744938] [2023-02-16 00:08:41,453 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-16 00:08:41,453 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1163447690] [2023-02-16 00:08:41,453 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1163447690] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 00:08:41,454 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-02-16 00:08:41,454 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2023-02-16 00:08:41,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701841848] [2023-02-16 00:08:41,454 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-02-16 00:08:41,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-02-16 00:08:41,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 00:08:41,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-02-16 00:08:41,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=457, Unknown=3, NotChecked=0, Total=552 [2023-02-16 00:08:41,456 INFO L87 Difference]: Start difference. First operand 40 states and 51 transitions. Second operand has 20 states, 19 states have (on average 1.5789473684210527) internal successors, (30), 17 states have internal predecessors, (30), 4 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) [2023-02-16 00:08:43,922 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-02-16 00:08:45,926 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-02-16 00:08:48,289 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-02-16 00:08:50,309 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-02-16 00:08:50,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 00:08:50,309 INFO L93 Difference]: Finished difference Result 83 states and 101 transitions. [2023-02-16 00:08:50,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-02-16 00:08:50,311 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.5789473684210527) internal successors, (30), 17 states have internal predecessors, (30), 4 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) Word has length 46 [2023-02-16 00:08:50,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 00:08:50,312 INFO L225 Difference]: With dead ends: 83 [2023-02-16 00:08:50,312 INFO L226 Difference]: Without dead ends: 79 [2023-02-16 00:08:50,313 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 30 SyntacticMatches, 5 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 421 ImplicationChecksByTransitivity, 8.8s TimeCoverageRelationStatistics Valid=237, Invalid=1242, Unknown=3, NotChecked=0, Total=1482 [2023-02-16 00:08:50,313 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 94 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 502 mSolverCounterSat, 58 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 187 SdHoareTripleChecker+Invalid, 564 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 502 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.4s IncrementalHoareTripleChecker+Time [2023-02-16 00:08:50,313 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 187 Invalid, 564 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 502 Invalid, 4 Unknown, 0 Unchecked, 8.4s Time] [2023-02-16 00:08:50,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2023-02-16 00:08:50,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 69. [2023-02-16 00:08:50,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 51 states have (on average 1.1176470588235294) internal successors, (57), 51 states have internal predecessors, (57), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-02-16 00:08:50,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 83 transitions. [2023-02-16 00:08:50,337 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 83 transitions. Word has length 46 [2023-02-16 00:08:50,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 00:08:50,338 INFO L495 AbstractCegarLoop]: Abstraction has 69 states and 83 transitions. [2023-02-16 00:08:50,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.5789473684210527) internal successors, (30), 17 states have internal predecessors, (30), 4 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) [2023-02-16 00:08:50,339 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 83 transitions. [2023-02-16 00:08:50,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2023-02-16 00:08:50,342 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 00:08:50,342 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 00:08:50,356 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-02-16 00:08:50,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 00:08:50,548 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 00:08:50,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 00:08:50,548 INFO L85 PathProgramCache]: Analyzing trace with hash -1847143947, now seen corresponding path program 2 times [2023-02-16 00:08:50,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 00:08:50,548 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144351557] [2023-02-16 00:08:50,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:08:50,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 00:08:50,575 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-16 00:08:50,577 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [390021159] [2023-02-16 00:08:50,581 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-16 00:08:50,581 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 00:08:50,581 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 00:08:50,582 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) [2023-02-16 00:08:50,584 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-02-16 00:08:50,644 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-16 00:08:50,645 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-16 00:08:50,646 INFO L263 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 6 conjunts are in the unsatisfiable core [2023-02-16 00:08:50,653 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 00:08:50,719 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 20 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-02-16 00:08:50,720 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 00:08:50,772 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-02-16 00:08:50,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 00:08:50,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144351557] [2023-02-16 00:08:50,773 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-16 00:08:50,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [390021159] [2023-02-16 00:08:50,773 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [390021159] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 00:08:50,773 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-16 00:08:50,773 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2023-02-16 00:08:50,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12285109] [2023-02-16 00:08:50,774 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-16 00:08:50,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-02-16 00:08:50,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 00:08:50,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-02-16 00:08:50,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-02-16 00:08:50,775 INFO L87 Difference]: Start difference. First operand 69 states and 83 transitions. Second operand has 9 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 9 states have internal predecessors, (33), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-02-16 00:08:50,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 00:08:50,971 INFO L93 Difference]: Finished difference Result 150 states and 186 transitions. [2023-02-16 00:08:50,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-02-16 00:08:50,971 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 9 states have internal predecessors, (33), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 48 [2023-02-16 00:08:50,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 00:08:50,972 INFO L225 Difference]: With dead ends: 150 [2023-02-16 00:08:50,972 INFO L226 Difference]: Without dead ends: 123 [2023-02-16 00:08:50,973 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 84 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2023-02-16 00:08:50,973 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 76 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 185 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-16 00:08:50,974 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 185 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-16 00:08:50,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2023-02-16 00:08:50,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 105. [2023-02-16 00:08:50,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 74 states have (on average 1.1216216216216217) internal successors, (83), 75 states have internal predecessors, (83), 25 states have call successors, (25), 5 states have call predecessors, (25), 5 states have return successors, (25), 24 states have call predecessors, (25), 25 states have call successors, (25) [2023-02-16 00:08:50,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 133 transitions. [2023-02-16 00:08:50,989 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 133 transitions. Word has length 48 [2023-02-16 00:08:50,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 00:08:50,990 INFO L495 AbstractCegarLoop]: Abstraction has 105 states and 133 transitions. [2023-02-16 00:08:50,990 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 9 states have internal predecessors, (33), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-02-16 00:08:50,990 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 133 transitions. [2023-02-16 00:08:50,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2023-02-16 00:08:50,991 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 00:08:50,991 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 00:08:50,996 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-02-16 00:08:51,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 00:08:51,198 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 00:08:51,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 00:08:51,199 INFO L85 PathProgramCache]: Analyzing trace with hash 741894005, now seen corresponding path program 3 times [2023-02-16 00:08:51,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 00:08:51,199 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895890457] [2023-02-16 00:08:51,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:08:51,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 00:08:51,215 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-16 00:08:51,216 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [524810332] [2023-02-16 00:08:51,216 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-16 00:08:51,216 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 00:08:51,216 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 00:08:51,217 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) [2023-02-16 00:08:51,219 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-02-16 00:08:51,276 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2023-02-16 00:08:51,277 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-16 00:08:51,278 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 49 conjunts are in the unsatisfiable core [2023-02-16 00:08:51,281 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 00:08:51,286 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2023-02-16 00:08:51,588 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 00:08:51,603 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 40 [2023-02-16 00:08:51,613 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 12 treesize of output 11 [2023-02-16 00:08:51,620 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 31 [2023-02-16 00:08:51,736 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-16 00:08:51,736 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 46 treesize of output 38 [2023-02-16 00:08:51,825 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 27 proven. 7 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-02-16 00:08:51,826 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 00:08:54,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 00:08:54,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895890457] [2023-02-16 00:08:54,103 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-16 00:08:54,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [524810332] [2023-02-16 00:08:54,103 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [524810332] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 00:08:54,103 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-02-16 00:08:54,103 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2023-02-16 00:08:54,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427280334] [2023-02-16 00:08:54,103 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-02-16 00:08:54,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-02-16 00:08:54,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 00:08:54,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-02-16 00:08:54,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=526, Unknown=0, NotChecked=0, Total=650 [2023-02-16 00:08:54,105 INFO L87 Difference]: Start difference. First operand 105 states and 133 transitions. Second operand has 19 states, 17 states have (on average 1.9411764705882353) internal successors, (33), 17 states have internal predecessors, (33), 5 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2023-02-16 00:08:54,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 00:08:54,626 INFO L93 Difference]: Finished difference Result 140 states and 178 transitions. [2023-02-16 00:08:54,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-02-16 00:08:54,626 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 1.9411764705882353) internal successors, (33), 17 states have internal predecessors, (33), 5 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) Word has length 48 [2023-02-16 00:08:54,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 00:08:54,631 INFO L225 Difference]: With dead ends: 140 [2023-02-16 00:08:54,631 INFO L226 Difference]: Without dead ends: 132 [2023-02-16 00:08:54,633 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 376 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=259, Invalid=1073, Unknown=0, NotChecked=0, Total=1332 [2023-02-16 00:08:54,634 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 88 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 392 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 440 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 392 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-02-16 00:08:54,634 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 159 Invalid, 440 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 392 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-02-16 00:08:54,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2023-02-16 00:08:54,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 108. [2023-02-16 00:08:54,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 77 states have (on average 1.12987012987013) internal successors, (87), 79 states have internal predecessors, (87), 25 states have call successors, (25), 5 states have call predecessors, (25), 5 states have return successors, (25), 23 states have call predecessors, (25), 25 states have call successors, (25) [2023-02-16 00:08:54,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 137 transitions. [2023-02-16 00:08:54,695 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 137 transitions. Word has length 48 [2023-02-16 00:08:54,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 00:08:54,695 INFO L495 AbstractCegarLoop]: Abstraction has 108 states and 137 transitions. [2023-02-16 00:08:54,695 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 1.9411764705882353) internal successors, (33), 17 states have internal predecessors, (33), 5 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2023-02-16 00:08:54,695 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 137 transitions. [2023-02-16 00:08:54,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-02-16 00:08:54,700 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 00:08:54,700 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 00:08:54,729 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-02-16 00:08:54,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 00:08:54,902 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 00:08:54,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 00:08:54,902 INFO L85 PathProgramCache]: Analyzing trace with hash 48801527, now seen corresponding path program 4 times [2023-02-16 00:08:54,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 00:08:54,902 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245306756] [2023-02-16 00:08:54,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:08:54,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 00:08:54,924 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-16 00:08:54,931 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2041155364] [2023-02-16 00:08:54,931 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-02-16 00:08:54,931 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 00:08:54,931 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 00:08:54,934 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) [2023-02-16 00:08:54,935 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-02-16 00:08:55,001 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-02-16 00:08:55,002 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-16 00:08:55,004 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 83 conjunts are in the unsatisfiable core [2023-02-16 00:08:55,007 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 00:08:55,022 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2023-02-16 00:08:55,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 00:08:55,042 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 31 [2023-02-16 00:08:55,047 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 12 treesize of output 11 [2023-02-16 00:08:55,050 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 26 [2023-02-16 00:08:55,112 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 53 [2023-02-16 00:08:56,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 00:08:56,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 00:08:56,140 INFO L321 Elim1Store]: treesize reduction 64, result has 47.1 percent of original size [2023-02-16 00:08:56,140 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 72 treesize of output 93 [2023-02-16 00:08:56,611 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-16 00:08:56,612 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 00:08:56,613 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-16 00:08:56,637 INFO L321 Elim1Store]: treesize reduction 60, result has 22.1 percent of original size [2023-02-16 00:08:56,637 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 1 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 111 treesize of output 67 [2023-02-16 00:08:56,742 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 25 proven. 17 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-02-16 00:08:56,743 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 00:08:58,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 00:08:58,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245306756] [2023-02-16 00:08:58,262 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-16 00:08:58,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2041155364] [2023-02-16 00:08:58,262 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2041155364] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 00:08:58,262 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-02-16 00:08:58,262 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2023-02-16 00:08:58,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102187969] [2023-02-16 00:08:58,262 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-02-16 00:08:58,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-02-16 00:08:58,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 00:08:58,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-02-16 00:08:58,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=218, Invalid=1264, Unknown=0, NotChecked=0, Total=1482 [2023-02-16 00:08:58,264 INFO L87 Difference]: Start difference. First operand 108 states and 137 transitions. Second operand has 26 states, 24 states have (on average 1.5416666666666667) internal successors, (37), 24 states have internal predecessors, (37), 5 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 3 states have call predecessors, (5), 5 states have call successors, (5) [2023-02-16 00:08:59,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 00:08:59,163 INFO L93 Difference]: Finished difference Result 153 states and 190 transitions. [2023-02-16 00:08:59,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-02-16 00:08:59,163 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 24 states have (on average 1.5416666666666667) internal successors, (37), 24 states have internal predecessors, (37), 5 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 3 states have call predecessors, (5), 5 states have call successors, (5) Word has length 50 [2023-02-16 00:08:59,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 00:08:59,165 INFO L225 Difference]: With dead ends: 153 [2023-02-16 00:08:59,165 INFO L226 Difference]: Without dead ends: 149 [2023-02-16 00:08:59,165 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 35 SyntacticMatches, 3 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 637 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=282, Invalid=1698, Unknown=0, NotChecked=0, Total=1980 [2023-02-16 00:08:59,166 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 41 mSDsluCounter, 250 mSDsCounter, 0 mSdLazyCounter, 607 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 297 SdHoareTripleChecker+Invalid, 616 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 607 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-02-16 00:08:59,166 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 297 Invalid, 616 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 607 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-02-16 00:08:59,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2023-02-16 00:08:59,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 133. [2023-02-16 00:08:59,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 96 states have (on average 1.125) internal successors, (108), 98 states have internal predecessors, (108), 29 states have call successors, (29), 7 states have call predecessors, (29), 7 states have return successors, (29), 27 states have call predecessors, (29), 29 states have call successors, (29) [2023-02-16 00:08:59,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 166 transitions. [2023-02-16 00:08:59,204 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 166 transitions. Word has length 50 [2023-02-16 00:08:59,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 00:08:59,204 INFO L495 AbstractCegarLoop]: Abstraction has 133 states and 166 transitions. [2023-02-16 00:08:59,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 24 states have (on average 1.5416666666666667) internal successors, (37), 24 states have internal predecessors, (37), 5 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 3 states have call predecessors, (5), 5 states have call successors, (5) [2023-02-16 00:08:59,205 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 166 transitions. [2023-02-16 00:08:59,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-02-16 00:08:59,205 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 00:08:59,206 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 00:08:59,219 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-02-16 00:08:59,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 00:08:59,412 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 00:08:59,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 00:08:59,412 INFO L85 PathProgramCache]: Analyzing trace with hash -293138951, now seen corresponding path program 5 times [2023-02-16 00:08:59,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 00:08:59,413 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625538267] [2023-02-16 00:08:59,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:08:59,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 00:08:59,436 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-16 00:08:59,436 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1927992375] [2023-02-16 00:08:59,436 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-02-16 00:08:59,437 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 00:08:59,437 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 00:08:59,438 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) [2023-02-16 00:08:59,442 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-02-16 00:08:59,507 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2023-02-16 00:08:59,508 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-16 00:08:59,509 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 8 conjunts are in the unsatisfiable core [2023-02-16 00:08:59,510 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 00:08:59,587 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 25 proven. 4 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-02-16 00:08:59,588 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 00:08:59,650 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-02-16 00:08:59,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 00:08:59,650 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625538267] [2023-02-16 00:08:59,650 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-16 00:08:59,651 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1927992375] [2023-02-16 00:08:59,651 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1927992375] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 00:08:59,651 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-16 00:08:59,651 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2023-02-16 00:08:59,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795509729] [2023-02-16 00:08:59,651 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-16 00:08:59,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-02-16 00:08:59,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 00:08:59,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-02-16 00:08:59,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2023-02-16 00:08:59,652 INFO L87 Difference]: Start difference. First operand 133 states and 166 transitions. Second operand has 12 states, 12 states have (on average 3.25) internal successors, (39), 12 states have internal predecessors, (39), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-02-16 00:09:00,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 00:09:00,033 INFO L93 Difference]: Finished difference Result 304 states and 384 transitions. [2023-02-16 00:09:00,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-02-16 00:09:00,034 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.25) internal successors, (39), 12 states have internal predecessors, (39), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 52 [2023-02-16 00:09:00,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 00:09:00,035 INFO L225 Difference]: With dead ends: 304 [2023-02-16 00:09:00,035 INFO L226 Difference]: Without dead ends: 227 [2023-02-16 00:09:00,036 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 88 SyntacticMatches, 4 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=96, Invalid=210, Unknown=0, NotChecked=0, Total=306 [2023-02-16 00:09:00,036 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 155 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 253 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 239 SdHoareTripleChecker+Invalid, 376 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-02-16 00:09:00,036 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [167 Valid, 239 Invalid, 376 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 253 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-02-16 00:09:00,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2023-02-16 00:09:00,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 192. [2023-02-16 00:09:00,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 134 states have (on average 1.1194029850746268) internal successors, (150), 136 states have internal predecessors, (150), 49 states have call successors, (49), 8 states have call predecessors, (49), 8 states have return successors, (49), 47 states have call predecessors, (49), 49 states have call successors, (49) [2023-02-16 00:09:00,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 248 transitions. [2023-02-16 00:09:00,064 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 248 transitions. Word has length 52 [2023-02-16 00:09:00,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 00:09:00,064 INFO L495 AbstractCegarLoop]: Abstraction has 192 states and 248 transitions. [2023-02-16 00:09:00,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.25) internal successors, (39), 12 states have internal predecessors, (39), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-02-16 00:09:00,064 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 248 transitions. [2023-02-16 00:09:00,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-02-16 00:09:00,065 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 00:09:00,065 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 00:09:00,073 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-02-16 00:09:00,271 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,SelfDestructingSolverStorable8 [2023-02-16 00:09:00,271 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 00:09:00,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 00:09:00,272 INFO L85 PathProgramCache]: Analyzing trace with hash 986268537, now seen corresponding path program 6 times [2023-02-16 00:09:00,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 00:09:00,272 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908567900] [2023-02-16 00:09:00,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:09:00,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 00:09:00,286 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-16 00:09:00,286 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1238791940] [2023-02-16 00:09:00,286 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-02-16 00:09:00,287 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 00:09:00,287 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 00:09:00,307 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) [2023-02-16 00:09:00,308 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-02-16 00:09:00,429 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2023-02-16 00:09:00,429 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-16 00:09:00,430 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 8 conjunts are in the unsatisfiable core [2023-02-16 00:09:00,432 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 00:09:00,511 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 20 proven. 9 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-02-16 00:09:00,511 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 00:09:00,576 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-02-16 00:09:00,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 00:09:00,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908567900] [2023-02-16 00:09:00,576 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-16 00:09:00,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1238791940] [2023-02-16 00:09:00,576 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1238791940] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 00:09:00,577 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-16 00:09:00,577 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2023-02-16 00:09:00,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683028993] [2023-02-16 00:09:00,577 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-16 00:09:00,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-02-16 00:09:00,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 00:09:00,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-02-16 00:09:00,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2023-02-16 00:09:00,578 INFO L87 Difference]: Start difference. First operand 192 states and 248 transitions. Second operand has 12 states, 12 states have (on average 3.25) internal successors, (39), 12 states have internal predecessors, (39), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-02-16 00:09:00,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 00:09:00,867 INFO L93 Difference]: Finished difference Result 217 states and 272 transitions. [2023-02-16 00:09:00,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-02-16 00:09:00,868 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.25) internal successors, (39), 12 states have internal predecessors, (39), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 52 [2023-02-16 00:09:00,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 00:09:00,869 INFO L225 Difference]: With dead ends: 217 [2023-02-16 00:09:00,869 INFO L226 Difference]: Without dead ends: 213 [2023-02-16 00:09:00,870 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 88 SyntacticMatches, 4 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2023-02-16 00:09:00,870 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 82 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 256 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 261 SdHoareTripleChecker+Invalid, 327 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-16 00:09:00,871 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 261 Invalid, 327 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 256 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-16 00:09:00,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2023-02-16 00:09:00,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 193. [2023-02-16 00:09:00,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 135 states have (on average 1.1185185185185185) internal successors, (151), 137 states have internal predecessors, (151), 49 states have call successors, (49), 8 states have call predecessors, (49), 8 states have return successors, (49), 47 states have call predecessors, (49), 49 states have call successors, (49) [2023-02-16 00:09:00,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 249 transitions. [2023-02-16 00:09:00,895 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 249 transitions. Word has length 52 [2023-02-16 00:09:00,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 00:09:00,895 INFO L495 AbstractCegarLoop]: Abstraction has 193 states and 249 transitions. [2023-02-16 00:09:00,895 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.25) internal successors, (39), 12 states have internal predecessors, (39), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-02-16 00:09:00,895 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 249 transitions. [2023-02-16 00:09:00,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-02-16 00:09:00,896 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 00:09:00,896 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 00:09:00,904 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-02-16 00:09:01,102 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-02-16 00:09:01,102 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 00:09:01,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 00:09:01,103 INFO L85 PathProgramCache]: Analyzing trace with hash -1330474501, now seen corresponding path program 7 times [2023-02-16 00:09:01,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 00:09:01,103 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509697559] [2023-02-16 00:09:01,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:09:01,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 00:09:01,119 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-16 00:09:01,124 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1501986145] [2023-02-16 00:09:01,124 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-02-16 00:09:01,124 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 00:09:01,124 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 00:09:01,125 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) [2023-02-16 00:09:01,141 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-02-16 00:09:01,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:09:01,233 WARN L261 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 104 conjunts are in the unsatisfiable core [2023-02-16 00:09:01,237 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 00:09:01,256 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2023-02-16 00:09:01,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 00:09:01,302 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 31 [2023-02-16 00:09:01,304 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 28 [2023-02-16 00:09:01,307 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 12 treesize of output 11 [2023-02-16 00:09:01,311 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 12 treesize of output 11 [2023-02-16 00:09:01,395 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 53 [2023-02-16 00:09:01,512 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 88 treesize of output 83 [2023-02-16 00:09:02,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 00:09:02,690 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 00:09:02,691 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 00:09:02,692 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 00:09:02,749 INFO L321 Elim1Store]: treesize reduction 98, result has 47.0 percent of original size [2023-02-16 00:09:02,749 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 8 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 90 treesize of output 129 [2023-02-16 00:09:03,553 INFO L321 Elim1Store]: treesize reduction 21, result has 16.0 percent of original size [2023-02-16 00:09:03,554 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 164 treesize of output 80 [2023-02-16 00:09:03,616 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 13 proven. 40 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-02-16 00:09:03,616 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 00:09:05,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 00:09:05,477 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509697559] [2023-02-16 00:09:05,478 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-16 00:09:05,478 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1501986145] [2023-02-16 00:09:05,478 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1501986145] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 00:09:05,478 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-02-16 00:09:05,478 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2023-02-16 00:09:05,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196474970] [2023-02-16 00:09:05,478 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-02-16 00:09:05,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-02-16 00:09:05,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 00:09:05,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-02-16 00:09:05,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=217, Invalid=1853, Unknown=0, NotChecked=0, Total=2070 [2023-02-16 00:09:05,480 INFO L87 Difference]: Start difference. First operand 193 states and 249 transitions. Second operand has 31 states, 29 states have (on average 1.4137931034482758) internal successors, (41), 28 states have internal predecessors, (41), 5 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 3 states have call predecessors, (5), 5 states have call successors, (5) [2023-02-16 00:09:07,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 00:09:07,961 INFO L93 Difference]: Finished difference Result 237 states and 302 transitions. [2023-02-16 00:09:07,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-02-16 00:09:07,962 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 29 states have (on average 1.4137931034482758) internal successors, (41), 28 states have internal predecessors, (41), 5 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 3 states have call predecessors, (5), 5 states have call successors, (5) Word has length 54 [2023-02-16 00:09:07,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 00:09:07,964 INFO L225 Difference]: With dead ends: 237 [2023-02-16 00:09:07,965 INFO L226 Difference]: Without dead ends: 233 [2023-02-16 00:09:07,966 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 36 SyntacticMatches, 6 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1239 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=442, Invalid=3718, Unknown=0, NotChecked=0, Total=4160 [2023-02-16 00:09:07,966 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 117 mSDsluCounter, 287 mSDsCounter, 0 mSdLazyCounter, 1195 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 329 SdHoareTripleChecker+Invalid, 1279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 1195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-02-16 00:09:07,966 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 329 Invalid, 1279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 1195 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-02-16 00:09:07,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2023-02-16 00:09:07,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 214. [2023-02-16 00:09:07,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 151 states have (on average 1.119205298013245) internal successors, (169), 153 states have internal predecessors, (169), 53 states have call successors, (53), 9 states have call predecessors, (53), 9 states have return successors, (53), 51 states have call predecessors, (53), 53 states have call successors, (53) [2023-02-16 00:09:08,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 275 transitions. [2023-02-16 00:09:08,001 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 275 transitions. Word has length 54 [2023-02-16 00:09:08,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 00:09:08,001 INFO L495 AbstractCegarLoop]: Abstraction has 214 states and 275 transitions. [2023-02-16 00:09:08,001 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 29 states have (on average 1.4137931034482758) internal successors, (41), 28 states have internal predecessors, (41), 5 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 3 states have call predecessors, (5), 5 states have call successors, (5) [2023-02-16 00:09:08,001 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 275 transitions. [2023-02-16 00:09:08,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-02-16 00:09:08,002 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 00:09:08,002 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 00:09:08,010 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-02-16 00:09:08,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-02-16 00:09:08,206 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 00:09:08,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 00:09:08,207 INFO L85 PathProgramCache]: Analyzing trace with hash 1367492605, now seen corresponding path program 8 times [2023-02-16 00:09:08,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 00:09:08,221 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588801470] [2023-02-16 00:09:08,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:09:08,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 00:09:08,252 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-16 00:09:08,256 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1837172749] [2023-02-16 00:09:08,257 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-16 00:09:08,257 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 00:09:08,257 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 00:09:08,270 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-16 00:09:08,282 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-02-16 00:09:08,350 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-16 00:09:08,350 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-16 00:09:08,351 INFO L263 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 10 conjunts are in the unsatisfiable core [2023-02-16 00:09:08,352 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 00:09:08,450 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 32 proven. 9 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-02-16 00:09:08,450 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 00:09:08,535 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 16 proven. 9 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-02-16 00:09:08,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 00:09:08,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588801470] [2023-02-16 00:09:08,536 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-16 00:09:08,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1837172749] [2023-02-16 00:09:08,536 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1837172749] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 00:09:08,536 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-16 00:09:08,536 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 15 [2023-02-16 00:09:08,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412034207] [2023-02-16 00:09:08,536 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-16 00:09:08,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-02-16 00:09:08,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 00:09:08,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-02-16 00:09:08,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2023-02-16 00:09:08,537 INFO L87 Difference]: Start difference. First operand 214 states and 275 transitions. Second operand has 15 states, 15 states have (on average 3.0) internal successors, (45), 15 states have internal predecessors, (45), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-02-16 00:09:09,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 00:09:09,025 INFO L93 Difference]: Finished difference Result 503 states and 654 transitions. [2023-02-16 00:09:09,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-02-16 00:09:09,025 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.0) internal successors, (45), 15 states have internal predecessors, (45), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 56 [2023-02-16 00:09:09,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 00:09:09,027 INFO L225 Difference]: With dead ends: 503 [2023-02-16 00:09:09,027 INFO L226 Difference]: Without dead ends: 361 [2023-02-16 00:09:09,028 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 92 SyntacticMatches, 5 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=176, Invalid=424, Unknown=0, NotChecked=0, Total=600 [2023-02-16 00:09:09,028 INFO L413 NwaCegarLoop]: 74 mSDtfsCounter, 312 mSDsluCounter, 200 mSDsCounter, 0 mSdLazyCounter, 348 mSolverCounterSat, 262 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 328 SdHoareTripleChecker+Valid, 274 SdHoareTripleChecker+Invalid, 610 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 262 IncrementalHoareTripleChecker+Valid, 348 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-02-16 00:09:09,029 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [328 Valid, 274 Invalid, 610 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [262 Valid, 348 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-02-16 00:09:09,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 361 states. [2023-02-16 00:09:09,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 361 to 295. [2023-02-16 00:09:09,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 295 states, 203 states have (on average 1.1231527093596059) internal successors, (228), 205 states have internal predecessors, (228), 81 states have call successors, (81), 10 states have call predecessors, (81), 10 states have return successors, (81), 79 states have call predecessors, (81), 81 states have call successors, (81) [2023-02-16 00:09:09,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 390 transitions. [2023-02-16 00:09:09,089 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 390 transitions. Word has length 56 [2023-02-16 00:09:09,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 00:09:09,090 INFO L495 AbstractCegarLoop]: Abstraction has 295 states and 390 transitions. [2023-02-16 00:09:09,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.0) internal successors, (45), 15 states have internal predecessors, (45), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-02-16 00:09:09,090 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 390 transitions. [2023-02-16 00:09:09,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-02-16 00:09:09,091 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 00:09:09,091 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 00:09:09,096 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-02-16 00:09:09,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-02-16 00:09:09,297 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 00:09:09,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 00:09:09,298 INFO L85 PathProgramCache]: Analyzing trace with hash -1777525379, now seen corresponding path program 9 times [2023-02-16 00:09:09,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 00:09:09,298 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491108174] [2023-02-16 00:09:09,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:09:09,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 00:09:09,316 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-16 00:09:09,316 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1712908491] [2023-02-16 00:09:09,317 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-16 00:09:09,317 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 00:09:09,317 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 00:09:09,318 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-16 00:09:09,320 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-02-16 00:09:09,426 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2023-02-16 00:09:09,426 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-16 00:09:09,427 INFO L263 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 10 conjunts are in the unsatisfiable core [2023-02-16 00:09:09,429 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 00:09:09,516 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 25 proven. 16 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-02-16 00:09:09,517 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 00:09:09,588 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 9 proven. 16 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-02-16 00:09:09,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 00:09:09,589 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491108174] [2023-02-16 00:09:09,589 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-16 00:09:09,589 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1712908491] [2023-02-16 00:09:09,589 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1712908491] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 00:09:09,589 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-16 00:09:09,589 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 15 [2023-02-16 00:09:09,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200664523] [2023-02-16 00:09:09,589 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-16 00:09:09,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-02-16 00:09:09,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 00:09:09,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-02-16 00:09:09,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2023-02-16 00:09:09,591 INFO L87 Difference]: Start difference. First operand 295 states and 390 transitions. Second operand has 15 states, 15 states have (on average 3.0) internal successors, (45), 15 states have internal predecessors, (45), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-02-16 00:09:10,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 00:09:10,004 INFO L93 Difference]: Finished difference Result 330 states and 422 transitions. [2023-02-16 00:09:10,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-02-16 00:09:10,004 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.0) internal successors, (45), 15 states have internal predecessors, (45), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 56 [2023-02-16 00:09:10,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 00:09:10,006 INFO L225 Difference]: With dead ends: 330 [2023-02-16 00:09:10,006 INFO L226 Difference]: Without dead ends: 326 [2023-02-16 00:09:10,007 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 92 SyntacticMatches, 5 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=149, Invalid=403, Unknown=0, NotChecked=0, Total=552 [2023-02-16 00:09:10,007 INFO L413 NwaCegarLoop]: 85 mSDtfsCounter, 152 mSDsluCounter, 257 mSDsCounter, 0 mSdLazyCounter, 392 mSolverCounterSat, 139 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 342 SdHoareTripleChecker+Invalid, 531 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 139 IncrementalHoareTripleChecker+Valid, 392 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-02-16 00:09:10,008 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [164 Valid, 342 Invalid, 531 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [139 Valid, 392 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-02-16 00:09:10,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2023-02-16 00:09:10,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 297. [2023-02-16 00:09:10,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 297 states, 205 states have (on average 1.1219512195121952) internal successors, (230), 207 states have internal predecessors, (230), 81 states have call successors, (81), 10 states have call predecessors, (81), 10 states have return successors, (81), 79 states have call predecessors, (81), 81 states have call successors, (81) [2023-02-16 00:09:10,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 392 transitions. [2023-02-16 00:09:10,054 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 392 transitions. Word has length 56 [2023-02-16 00:09:10,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 00:09:10,054 INFO L495 AbstractCegarLoop]: Abstraction has 297 states and 392 transitions. [2023-02-16 00:09:10,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.0) internal successors, (45), 15 states have internal predecessors, (45), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-02-16 00:09:10,055 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 392 transitions. [2023-02-16 00:09:10,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-02-16 00:09:10,057 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 00:09:10,057 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 00:09:10,065 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-02-16 00:09:10,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-02-16 00:09:10,263 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 00:09:10,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 00:09:10,264 INFO L85 PathProgramCache]: Analyzing trace with hash 1248328447, now seen corresponding path program 10 times [2023-02-16 00:09:10,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 00:09:10,264 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670231968] [2023-02-16 00:09:10,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:09:10,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 00:09:10,277 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-16 00:09:10,277 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [379499766] [2023-02-16 00:09:10,277 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-02-16 00:09:10,278 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 00:09:10,278 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 00:09:10,279 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-16 00:09:10,282 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-02-16 00:09:10,450 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-02-16 00:09:10,450 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-16 00:09:10,453 WARN L261 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 124 conjunts are in the unsatisfiable core [2023-02-16 00:09:10,458 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 00:09:10,464 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2023-02-16 00:09:10,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 00:09:10,484 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 31 [2023-02-16 00:09:10,487 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 28 [2023-02-16 00:09:10,489 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 12 treesize of output 11 [2023-02-16 00:09:10,493 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 12 treesize of output 11 [2023-02-16 00:09:10,555 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 00:09:10,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 00:09:10,557 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 43 [2023-02-16 00:09:10,622 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 00:09:10,623 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 00:09:10,623 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 00:09:10,624 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 00:09:10,625 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 00:09:10,625 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 00:09:10,626 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 72 treesize of output 67 [2023-02-16 00:09:10,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 00:09:10,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 00:09:10,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 00:09:10,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 00:09:10,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 00:09:10,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 00:09:10,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 00:09:10,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 00:09:10,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 00:09:10,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 00:09:10,749 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 13 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 96 treesize of output 97 [2023-02-16 00:09:12,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 00:09:12,275 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 00:09:12,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 00:09:12,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 00:09:12,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 00:09:12,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 00:09:12,365 INFO L321 Elim1Store]: treesize reduction 132, result has 47.0 percent of original size [2023-02-16 00:09:12,365 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 14 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 8 case distinctions, treesize of input 108 treesize of output 165 [2023-02-16 00:09:14,012 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 00:09:14,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 00:09:14,013 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-16 00:09:14,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 00:09:14,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 00:09:14,015 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-16 00:09:14,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 00:09:14,035 INFO L321 Elim1Store]: treesize reduction 76, result has 18.3 percent of original size [2023-02-16 00:09:14,038 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 12 select indices, 12 select index equivalence classes, 6 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 66 case distinctions, treesize of input 264 treesize of output 132 [2023-02-16 00:09:14,169 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 16 proven. 32 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-02-16 00:09:14,170 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 00:09:17,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 00:09:17,151 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670231968] [2023-02-16 00:09:17,151 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-16 00:09:17,151 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [379499766] [2023-02-16 00:09:17,151 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [379499766] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 00:09:17,151 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-02-16 00:09:17,151 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2023-02-16 00:09:17,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082632524] [2023-02-16 00:09:17,151 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-02-16 00:09:17,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-02-16 00:09:17,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 00:09:17,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-02-16 00:09:17,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=369, Invalid=2387, Unknown=0, NotChecked=0, Total=2756 [2023-02-16 00:09:17,153 INFO L87 Difference]: Start difference. First operand 297 states and 392 transitions. Second operand has 32 states, 29 states have (on average 1.3448275862068966) internal successors, (39), 29 states have internal predecessors, (39), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 3 states have call predecessors, (5), 5 states have call successors, (5) [2023-02-16 00:09:19,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 00:09:19,105 INFO L93 Difference]: Finished difference Result 347 states and 452 transitions. [2023-02-16 00:09:19,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-02-16 00:09:19,106 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 29 states have (on average 1.3448275862068966) internal successors, (39), 29 states have internal predecessors, (39), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 3 states have call predecessors, (5), 5 states have call successors, (5) Word has length 58 [2023-02-16 00:09:19,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 00:09:19,107 INFO L225 Difference]: With dead ends: 347 [2023-02-16 00:09:19,107 INFO L226 Difference]: Without dead ends: 329 [2023-02-16 00:09:19,108 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 32 SyntacticMatches, 4 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 959 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=442, Invalid=2864, Unknown=0, NotChecked=0, Total=3306 [2023-02-16 00:09:19,108 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 51 mSDsluCounter, 350 mSDsCounter, 0 mSdLazyCounter, 1282 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 409 SdHoareTripleChecker+Invalid, 1305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1282 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-02-16 00:09:19,109 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 409 Invalid, 1305 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 1282 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-02-16 00:09:19,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2023-02-16 00:09:19,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 315. [2023-02-16 00:09:19,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 315 states, 218 states have (on average 1.1192660550458715) internal successors, (244), 220 states have internal predecessors, (244), 85 states have call successors, (85), 11 states have call predecessors, (85), 11 states have return successors, (85), 83 states have call predecessors, (85), 85 states have call successors, (85) [2023-02-16 00:09:19,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 414 transitions. [2023-02-16 00:09:19,160 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 414 transitions. Word has length 58 [2023-02-16 00:09:19,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 00:09:19,161 INFO L495 AbstractCegarLoop]: Abstraction has 315 states and 414 transitions. [2023-02-16 00:09:19,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 29 states have (on average 1.3448275862068966) internal successors, (39), 29 states have internal predecessors, (39), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 3 states have call predecessors, (5), 5 states have call successors, (5) [2023-02-16 00:09:19,162 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 414 transitions. [2023-02-16 00:09:19,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-02-16 00:09:19,164 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 00:09:19,164 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 00:09:19,170 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-02-16 00:09:19,365 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-02-16 00:09:19,366 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 00:09:19,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 00:09:19,367 INFO L85 PathProgramCache]: Analyzing trace with hash -1599277695, now seen corresponding path program 11 times [2023-02-16 00:09:19,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 00:09:19,367 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336053653] [2023-02-16 00:09:19,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:09:19,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 00:09:19,399 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-16 00:09:19,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1015683073] [2023-02-16 00:09:19,400 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-02-16 00:09:19,400 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 00:09:19,400 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 00:09:19,413 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-16 00:09:19,414 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-02-16 00:09:19,619 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2023-02-16 00:09:19,619 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-16 00:09:19,624 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 12 conjunts are in the unsatisfiable core [2023-02-16 00:09:19,625 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 00:09:19,742 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 32 proven. 25 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-02-16 00:09:19,742 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 00:09:19,827 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 16 proven. 25 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-02-16 00:09:19,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 00:09:19,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336053653] [2023-02-16 00:09:19,828 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-16 00:09:19,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1015683073] [2023-02-16 00:09:19,828 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1015683073] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 00:09:19,828 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-16 00:09:19,828 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 18 [2023-02-16 00:09:19,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054399053] [2023-02-16 00:09:19,829 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-16 00:09:19,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-02-16 00:09:19,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 00:09:19,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-02-16 00:09:19,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=223, Unknown=0, NotChecked=0, Total=306 [2023-02-16 00:09:19,830 INFO L87 Difference]: Start difference. First operand 315 states and 414 transitions. Second operand has 18 states, 18 states have (on average 2.8333333333333335) internal successors, (51), 18 states have internal predecessors, (51), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-02-16 00:09:20,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 00:09:20,605 INFO L93 Difference]: Finished difference Result 492 states and 635 transitions. [2023-02-16 00:09:20,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-02-16 00:09:20,606 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.8333333333333335) internal successors, (51), 18 states have internal predecessors, (51), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 60 [2023-02-16 00:09:20,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 00:09:20,607 INFO L225 Difference]: With dead ends: 492 [2023-02-16 00:09:20,607 INFO L226 Difference]: Without dead ends: 430 [2023-02-16 00:09:20,608 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 96 SyntacticMatches, 6 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=209, Invalid=603, Unknown=0, NotChecked=0, Total=812 [2023-02-16 00:09:20,608 INFO L413 NwaCegarLoop]: 110 mSDtfsCounter, 132 mSDsluCounter, 662 mSDsCounter, 0 mSdLazyCounter, 917 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 772 SdHoareTripleChecker+Invalid, 1005 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 917 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-02-16 00:09:20,608 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 772 Invalid, 1005 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 917 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-02-16 00:09:20,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 430 states. [2023-02-16 00:09:20,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 430 to 377. [2023-02-16 00:09:20,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 259 states have (on average 1.1235521235521235) internal successors, (291), 261 states have internal predecessors, (291), 105 states have call successors, (105), 12 states have call predecessors, (105), 12 states have return successors, (105), 103 states have call predecessors, (105), 105 states have call successors, (105) [2023-02-16 00:09:20,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 501 transitions. [2023-02-16 00:09:20,657 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 501 transitions. Word has length 60 [2023-02-16 00:09:20,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 00:09:20,658 INFO L495 AbstractCegarLoop]: Abstraction has 377 states and 501 transitions. [2023-02-16 00:09:20,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.8333333333333335) internal successors, (51), 18 states have internal predecessors, (51), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-02-16 00:09:20,658 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 501 transitions. [2023-02-16 00:09:20,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-02-16 00:09:20,659 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 00:09:20,659 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 00:09:20,666 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-02-16 00:09:20,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 00:09:20,865 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 00:09:20,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 00:09:20,865 INFO L85 PathProgramCache]: Analyzing trace with hash 745660931, now seen corresponding path program 12 times [2023-02-16 00:09:20,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 00:09:20,865 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827541064] [2023-02-16 00:09:20,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:09:20,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 00:09:20,876 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-16 00:09:20,877 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [896310748] [2023-02-16 00:09:20,877 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-02-16 00:09:20,877 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 00:09:20,877 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 00:09:20,878 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-16 00:09:20,880 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-02-16 00:09:21,169 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2023-02-16 00:09:21,169 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-16 00:09:21,172 WARN L261 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 128 conjunts are in the unsatisfiable core [2023-02-16 00:09:21,176 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 00:09:21,180 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2023-02-16 00:09:21,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 00:09:21,200 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 31 [2023-02-16 00:09:21,203 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 28 [2023-02-16 00:09:21,206 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 12 treesize of output 11 [2023-02-16 00:09:21,211 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 12 treesize of output 11 [2023-02-16 00:09:21,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 00:09:21,268 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 41 [2023-02-16 00:09:21,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 00:09:21,273 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 22 [2023-02-16 00:09:21,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 00:09:21,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 00:09:21,277 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 46 [2023-02-16 00:09:21,350 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 00:09:21,352 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 55 [2023-02-16 00:09:21,356 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 00:09:21,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 00:09:21,358 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 00:09:21,360 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 34 [2023-02-16 00:09:21,364 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 00:09:21,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 00:09:21,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 00:09:21,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 00:09:21,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 00:09:21,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 00:09:21,368 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 70 [2023-02-16 00:09:21,456 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 00:09:21,458 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 78 treesize of output 69 [2023-02-16 00:09:21,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 00:09:21,463 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 00:09:21,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 00:09:21,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 00:09:21,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 00:09:21,469 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 46 [2023-02-16 00:09:21,473 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 00:09:21,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 00:09:21,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 00:09:21,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 00:09:21,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 00:09:21,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 00:09:21,477 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 00:09:21,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 00:09:21,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 00:09:21,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 00:09:21,480 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 13 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 77 treesize of output 94 [2023-02-16 00:09:21,612 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 00:09:21,614 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 102 treesize of output 89 [2023-02-16 00:09:21,620 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 00:09:21,621 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 00:09:21,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 00:09:21,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 00:09:21,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 00:09:21,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 00:09:21,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 00:09:21,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 00:09:21,642 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 61 [2023-02-16 00:09:21,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 00:09:21,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 00:09:21,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 00:09:21,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 00:09:21,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 00:09:21,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 00:09:21,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 00:09:21,650 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 00:09:21,650 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 00:09:21,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 00:09:21,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 00:09:21,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 00:09:21,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 00:09:21,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 00:09:21,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 00:09:21,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 00:09:21,656 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 21 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 101 treesize of output 124 [2023-02-16 00:09:23,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 00:09:23,228 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 114 treesize of output 97 [2023-02-16 00:09:23,234 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 61 [2023-02-16 00:09:23,239 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 00:09:23,241 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 00:09:23,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 00:09:23,244 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 00:09:23,311 INFO L321 Elim1Store]: treesize reduction 78, result has 48.7 percent of original size [2023-02-16 00:09:23,311 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 46 treesize of output 100 [2023-02-16 00:09:23,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 00:09:23,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 00:09:23,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 00:09:23,368 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 00:09:23,422 INFO L321 Elim1Store]: treesize reduction 88, result has 45.7 percent of original size [2023-02-16 00:09:23,423 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 46 treesize of output 102 [2023-02-16 00:09:26,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 00:09:26,368 INFO L321 Elim1Store]: treesize reduction 304, result has 37.8 percent of original size [2023-02-16 00:09:26,368 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 14 select indices, 14 select index equivalence classes, 12 disjoint index pairs (out of 91 index pairs), introduced 14 new quantified variables, introduced 91 case distinctions, treesize of input 366 treesize of output 346 [2023-02-16 00:09:33,794 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 16 proven. 50 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-02-16 00:09:33,794 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 00:09:36,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 00:09:36,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827541064] [2023-02-16 00:09:36,790 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-16 00:09:36,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [896310748] [2023-02-16 00:09:36,790 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [896310748] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 00:09:36,790 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-02-16 00:09:36,790 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2023-02-16 00:09:36,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601384333] [2023-02-16 00:09:36,790 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-02-16 00:09:36,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-02-16 00:09:36,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 00:09:36,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-02-16 00:09:36,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=313, Invalid=2038, Unknown=1, NotChecked=0, Total=2352 [2023-02-16 00:09:36,792 INFO L87 Difference]: Start difference. First operand 377 states and 501 transitions. Second operand has 35 states, 32 states have (on average 1.34375) internal successors, (43), 32 states have internal predecessors, (43), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 3 states have call predecessors, (5), 5 states have call successors, (5) [2023-02-16 00:09:40,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 00:09:40,443 INFO L93 Difference]: Finished difference Result 428 states and 561 transitions. [2023-02-16 00:09:40,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2023-02-16 00:09:40,443 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 32 states have (on average 1.34375) internal successors, (43), 32 states have internal predecessors, (43), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 3 states have call predecessors, (5), 5 states have call successors, (5) Word has length 62 [2023-02-16 00:09:40,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 00:09:40,445 INFO L225 Difference]: With dead ends: 428 [2023-02-16 00:09:40,445 INFO L226 Difference]: Without dead ends: 424 [2023-02-16 00:09:40,446 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 31 SyntacticMatches, 3 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 907 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=401, Invalid=2904, Unknown=1, NotChecked=0, Total=3306 [2023-02-16 00:09:40,446 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 56 mSDsluCounter, 428 mSDsCounter, 0 mSdLazyCounter, 1766 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 486 SdHoareTripleChecker+Invalid, 1789 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1766 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-02-16 00:09:40,446 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 486 Invalid, 1789 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 1766 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-02-16 00:09:40,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 424 states. [2023-02-16 00:09:40,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 424 to 398. [2023-02-16 00:09:40,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 398 states, 275 states have (on average 1.1236363636363635) internal successors, (309), 277 states have internal predecessors, (309), 109 states have call successors, (109), 13 states have call predecessors, (109), 13 states have return successors, (109), 107 states have call predecessors, (109), 109 states have call successors, (109) [2023-02-16 00:09:40,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 398 states to 398 states and 527 transitions. [2023-02-16 00:09:40,512 INFO L78 Accepts]: Start accepts. Automaton has 398 states and 527 transitions. Word has length 62 [2023-02-16 00:09:40,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 00:09:40,512 INFO L495 AbstractCegarLoop]: Abstraction has 398 states and 527 transitions. [2023-02-16 00:09:40,512 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 32 states have (on average 1.34375) internal successors, (43), 32 states have internal predecessors, (43), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 3 states have call predecessors, (5), 5 states have call successors, (5) [2023-02-16 00:09:40,512 INFO L276 IsEmpty]: Start isEmpty. Operand 398 states and 527 transitions. [2023-02-16 00:09:40,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-02-16 00:09:40,513 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 00:09:40,513 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 00:09:40,519 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-02-16 00:09:40,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-02-16 00:09:40,720 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 00:09:40,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 00:09:40,720 INFO L85 PathProgramCache]: Analyzing trace with hash -626149883, now seen corresponding path program 13 times [2023-02-16 00:09:40,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 00:09:40,721 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498177630] [2023-02-16 00:09:40,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:09:40,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 00:09:40,740 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-16 00:09:40,741 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [703047196] [2023-02-16 00:09:40,741 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-02-16 00:09:40,741 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 00:09:40,741 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 00:09:40,742 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-16 00:09:40,765 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-02-16 00:09:40,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:09:40,851 INFO L263 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 14 conjunts are in the unsatisfiable core [2023-02-16 00:09:40,852 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 00:09:40,971 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 52 proven. 25 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-02-16 00:09:40,971 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 00:09:41,095 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 36 proven. 25 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-02-16 00:09:41,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 00:09:41,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498177630] [2023-02-16 00:09:41,095 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-16 00:09:41,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [703047196] [2023-02-16 00:09:41,095 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [703047196] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 00:09:41,095 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-16 00:09:41,095 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 21 [2023-02-16 00:09:41,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753114162] [2023-02-16 00:09:41,096 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-16 00:09:41,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-02-16 00:09:41,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 00:09:41,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-02-16 00:09:41,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=309, Unknown=0, NotChecked=0, Total=420 [2023-02-16 00:09:41,096 INFO L87 Difference]: Start difference. First operand 398 states and 527 transitions. Second operand has 21 states, 21 states have (on average 2.7142857142857144) internal successors, (57), 21 states have internal predecessors, (57), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-02-16 00:09:42,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 00:09:42,037 INFO L93 Difference]: Finished difference Result 1128 states and 1507 transitions. [2023-02-16 00:09:42,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2023-02-16 00:09:42,038 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.7142857142857144) internal successors, (57), 21 states have internal predecessors, (57), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 64 [2023-02-16 00:09:42,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 00:09:42,041 INFO L225 Difference]: With dead ends: 1128 [2023-02-16 00:09:42,041 INFO L226 Difference]: Without dead ends: 834 [2023-02-16 00:09:42,042 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 100 SyntacticMatches, 7 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 452 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=475, Invalid=1417, Unknown=0, NotChecked=0, Total=1892 [2023-02-16 00:09:42,042 INFO L413 NwaCegarLoop]: 108 mSDtfsCounter, 717 mSDsluCounter, 383 mSDsCounter, 0 mSdLazyCounter, 764 mSolverCounterSat, 563 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 741 SdHoareTripleChecker+Valid, 491 SdHoareTripleChecker+Invalid, 1327 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 563 IncrementalHoareTripleChecker+Valid, 764 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-02-16 00:09:42,043 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [741 Valid, 491 Invalid, 1327 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [563 Valid, 764 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-02-16 00:09:42,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 834 states. [2023-02-16 00:09:42,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 834 to 598. [2023-02-16 00:09:42,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 598 states, 406 states have (on average 1.125615763546798) internal successors, (457), 408 states have internal predecessors, (457), 177 states have call successors, (177), 14 states have call predecessors, (177), 14 states have return successors, (177), 175 states have call predecessors, (177), 177 states have call successors, (177) [2023-02-16 00:09:42,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 598 states to 598 states and 811 transitions. [2023-02-16 00:09:42,140 INFO L78 Accepts]: Start accepts. Automaton has 598 states and 811 transitions. Word has length 64 [2023-02-16 00:09:42,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 00:09:42,140 INFO L495 AbstractCegarLoop]: Abstraction has 598 states and 811 transitions. [2023-02-16 00:09:42,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.7142857142857144) internal successors, (57), 21 states have internal predecessors, (57), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-02-16 00:09:42,141 INFO L276 IsEmpty]: Start isEmpty. Operand 598 states and 811 transitions. [2023-02-16 00:09:42,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-02-16 00:09:42,141 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 00:09:42,142 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 00:09:42,148 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-02-16 00:09:42,347 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-02-16 00:09:42,348 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 00:09:42,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 00:09:42,348 INFO L85 PathProgramCache]: Analyzing trace with hash -1965962363, now seen corresponding path program 14 times [2023-02-16 00:09:42,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 00:09:42,348 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214898349] [2023-02-16 00:09:42,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:09:42,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 00:09:42,369 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-16 00:09:42,369 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1382979457] [2023-02-16 00:09:42,369 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-16 00:09:42,372 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 00:09:42,372 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 00:09:42,373 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-16 00:09:42,403 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-02-16 00:09:42,475 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-16 00:09:42,475 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-16 00:09:42,476 INFO L263 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 14 conjunts are in the unsatisfiable core [2023-02-16 00:09:42,478 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 00:09:42,621 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 41 proven. 36 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-02-16 00:09:42,622 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 00:09:42,697 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 25 proven. 36 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-02-16 00:09:42,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 00:09:42,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214898349] [2023-02-16 00:09:42,698 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-16 00:09:42,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1382979457] [2023-02-16 00:09:42,698 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1382979457] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 00:09:42,698 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-16 00:09:42,699 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 21 [2023-02-16 00:09:42,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565452055] [2023-02-16 00:09:42,699 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-16 00:09:42,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-02-16 00:09:42,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 00:09:42,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-02-16 00:09:42,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=309, Unknown=0, NotChecked=0, Total=420 [2023-02-16 00:09:42,700 INFO L87 Difference]: Start difference. First operand 598 states and 811 transitions. Second operand has 21 states, 21 states have (on average 2.7142857142857144) internal successors, (57), 21 states have internal predecessors, (57), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-02-16 00:09:43,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 00:09:43,601 INFO L93 Difference]: Finished difference Result 677 states and 886 transitions. [2023-02-16 00:09:43,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-02-16 00:09:43,602 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.7142857142857144) internal successors, (57), 21 states have internal predecessors, (57), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 64 [2023-02-16 00:09:43,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 00:09:43,604 INFO L225 Difference]: With dead ends: 677 [2023-02-16 00:09:43,605 INFO L226 Difference]: Without dead ends: 673 [2023-02-16 00:09:43,605 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 100 SyntacticMatches, 7 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 283 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=279, Invalid=843, Unknown=0, NotChecked=0, Total=1122 [2023-02-16 00:09:43,607 INFO L413 NwaCegarLoop]: 135 mSDtfsCounter, 191 mSDsluCounter, 477 mSDsCounter, 0 mSdLazyCounter, 658 mSolverCounterSat, 183 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 211 SdHoareTripleChecker+Valid, 612 SdHoareTripleChecker+Invalid, 841 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 183 IncrementalHoareTripleChecker+Valid, 658 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-02-16 00:09:43,607 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [211 Valid, 612 Invalid, 841 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [183 Valid, 658 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-02-16 00:09:43,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 673 states. [2023-02-16 00:09:43,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 673 to 600. [2023-02-16 00:09:43,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 600 states, 408 states have (on average 1.125) internal successors, (459), 410 states have internal predecessors, (459), 177 states have call successors, (177), 14 states have call predecessors, (177), 14 states have return successors, (177), 175 states have call predecessors, (177), 177 states have call successors, (177) [2023-02-16 00:09:43,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 600 states to 600 states and 813 transitions. [2023-02-16 00:09:43,715 INFO L78 Accepts]: Start accepts. Automaton has 600 states and 813 transitions. Word has length 64 [2023-02-16 00:09:43,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 00:09:43,716 INFO L495 AbstractCegarLoop]: Abstraction has 600 states and 813 transitions. [2023-02-16 00:09:43,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.7142857142857144) internal successors, (57), 21 states have internal predecessors, (57), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-02-16 00:09:43,716 INFO L276 IsEmpty]: Start isEmpty. Operand 600 states and 813 transitions. [2023-02-16 00:09:43,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-02-16 00:09:43,717 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 00:09:43,717 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 00:09:43,730 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-02-16 00:09:43,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-02-16 00:09:43,922 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 00:09:43,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 00:09:43,922 INFO L85 PathProgramCache]: Analyzing trace with hash 549013255, now seen corresponding path program 15 times [2023-02-16 00:09:43,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 00:09:43,923 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596024547] [2023-02-16 00:09:43,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:09:43,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 00:09:43,934 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-16 00:09:43,935 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [160440721] [2023-02-16 00:09:43,935 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-16 00:09:43,935 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 00:09:43,935 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 00:09:43,944 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-16 00:09:43,945 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-02-16 00:09:44,227 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2023-02-16 00:09:44,228 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-16 00:09:44,231 WARN L261 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 158 conjunts are in the unsatisfiable core [2023-02-16 00:09:44,235 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 00:09:44,239 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2023-02-16 00:09:44,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 00:09:44,257 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 31 [2023-02-16 00:09:44,262 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 12 treesize of output 11 [2023-02-16 00:09:44,264 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 26 [2023-02-16 00:09:44,303 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 53 [2023-02-16 00:09:44,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 00:09:44,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 00:09:44,356 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 00:09:44,356 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 00:09:44,358 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 63 [2023-02-16 00:09:44,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 00:09:44,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 00:09:44,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 00:09:44,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 00:09:44,463 INFO L321 Elim1Store]: treesize reduction 128, result has 28.5 percent of original size [2023-02-16 00:09:44,464 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 7 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 90 treesize of output 91 [2023-02-16 00:09:44,572 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 00:09:44,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 00:09:44,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 00:09:44,574 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 00:09:44,618 INFO L321 Elim1Store]: treesize reduction 188, result has 21.3 percent of original size [2023-02-16 00:09:44,618 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 7 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 12 case distinctions, treesize of input 114 treesize of output 121 [2023-02-16 00:09:44,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 00:09:44,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 00:09:44,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 00:09:44,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 00:09:44,834 INFO L321 Elim1Store]: treesize reduction 248, result has 17.1 percent of original size [2023-02-16 00:09:44,834 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 13 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 18 case distinctions, treesize of input 138 treesize of output 151 [2023-02-16 00:09:46,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 00:09:46,962 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 00:09:46,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 00:09:46,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 00:09:47,188 INFO L321 Elim1Store]: treesize reduction 556, result has 27.7 percent of original size [2023-02-16 00:09:47,189 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 14 select indices, 14 select index equivalence classes, 14 disjoint index pairs (out of 91 index pairs), introduced 14 new quantified variables, introduced 42 case distinctions, treesize of input 182 treesize of output 279 [2023-02-16 00:10:14,512 WARN L233 SmtUtils]: Spent 21.53s on a formula simplification. DAG size of input: 403 DAG size of output: 392 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-02-16 00:10:40,201 WARN L233 SmtUtils]: Spent 10.74s on a formula simplification that was a NOOP. DAG size: 389 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-02-16 00:11:02,036 WARN L233 SmtUtils]: Spent 15.89s on a formula simplification. DAG size of input: 392 DAG size of output: 391 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-02-16 00:11:23,699 WARN L233 SmtUtils]: Spent 7.56s on a formula simplification. DAG size of input: 378 DAG size of output: 378 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-02-16 00:11:51,382 WARN L233 SmtUtils]: Spent 16.14s on a formula simplification that was a NOOP. DAG size: 374 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-02-16 00:12:30,302 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 00:12:30,303 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 00:12:30,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 00:12:30,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 00:12:30,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 00:12:30,308 INFO L190 IndexEqualityManager]: detected not equals via solver