./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-patterns/array7_pattern.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 26d01a9c Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/array-patterns/array7_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 85b55cdd1f26353e63ecc189ba28ba899672edc569fe3ef3f04470f2b5e667fa --- Real Ultimate output --- This is Ultimate 0.2.2-?-26d01a9 [2023-02-17 20:29:37,272 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-17 20:29:37,274 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-17 20:29:37,311 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-17 20:29:37,311 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-17 20:29:37,315 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-17 20:29:37,316 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-17 20:29:37,318 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-17 20:29:37,320 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-17 20:29:37,325 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-17 20:29:37,326 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-17 20:29:37,328 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-17 20:29:37,329 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-17 20:29:37,330 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-17 20:29:37,331 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-17 20:29:37,332 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-17 20:29:37,332 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-17 20:29:37,334 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-17 20:29:37,335 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-17 20:29:37,338 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-17 20:29:37,339 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-17 20:29:37,340 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-17 20:29:37,341 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-17 20:29:37,341 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-17 20:29:37,345 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-17 20:29:37,346 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-17 20:29:37,346 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-17 20:29:37,347 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-17 20:29:37,347 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-17 20:29:37,348 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-17 20:29:37,348 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-17 20:29:37,348 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-17 20:29:37,349 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-17 20:29:37,350 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-17 20:29:37,351 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-17 20:29:37,351 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-17 20:29:37,351 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-17 20:29:37,351 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-17 20:29:37,352 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-17 20:29:37,352 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-17 20:29:37,353 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-17 20:29:37,354 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-02-17 20:29:37,379 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-17 20:29:37,379 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-17 20:29:37,379 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-17 20:29:37,380 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-17 20:29:37,380 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-17 20:29:37,381 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-17 20:29:37,381 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-17 20:29:37,381 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-17 20:29:37,381 INFO L138 SettingsManager]: * Use SBE=true [2023-02-17 20:29:37,381 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-17 20:29:37,382 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-17 20:29:37,382 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-17 20:29:37,382 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-17 20:29:37,383 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-17 20:29:37,383 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-17 20:29:37,383 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-17 20:29:37,383 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-17 20:29:37,383 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-17 20:29:37,383 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-17 20:29:37,383 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-17 20:29:37,383 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-17 20:29:37,384 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-17 20:29:37,384 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-17 20:29:37,384 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-17 20:29:37,384 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-17 20:29:37,384 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-17 20:29:37,384 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-17 20:29:37,385 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-17 20:29:37,385 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-17 20:29:37,385 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-17 20:29:37,385 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-17 20:29:37,385 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-17 20:29:37,385 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-17 20:29:37,386 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-17 20:29:37,386 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-17 20:29:37,386 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 85b55cdd1f26353e63ecc189ba28ba899672edc569fe3ef3f04470f2b5e667fa [2023-02-17 20:29:37,646 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-17 20:29:37,662 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-17 20:29:37,663 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-17 20:29:37,664 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-17 20:29:37,665 INFO L275 PluginConnector]: CDTParser initialized [2023-02-17 20:29:37,665 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-patterns/array7_pattern.c [2023-02-17 20:29:38,696 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-17 20:29:38,873 INFO L351 CDTParser]: Found 1 translation units. [2023-02-17 20:29:38,874 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-patterns/array7_pattern.c [2023-02-17 20:29:38,878 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f29ffdbb8/f1377e7f317845239ac4e1f7791f54f0/FLAG35e4a78e0 [2023-02-17 20:29:39,281 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f29ffdbb8/f1377e7f317845239ac4e1f7791f54f0 [2023-02-17 20:29:39,283 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-17 20:29:39,284 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-17 20:29:39,285 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-17 20:29:39,285 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-17 20:29:39,288 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-17 20:29:39,288 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.02 08:29:39" (1/1) ... [2023-02-17 20:29:39,289 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12bcb229 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 08:29:39, skipping insertion in model container [2023-02-17 20:29:39,289 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.02 08:29:39" (1/1) ... [2023-02-17 20:29:39,294 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-17 20:29:39,306 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-17 20:29:39,474 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/array7_pattern.c[1375,1388] [2023-02-17 20:29:39,500 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-17 20:29:39,508 INFO L203 MainTranslator]: Completed pre-run [2023-02-17 20:29:39,517 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/array7_pattern.c[1375,1388] [2023-02-17 20:29:39,543 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-17 20:29:39,554 INFO L208 MainTranslator]: Completed translation [2023-02-17 20:29:39,554 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 08:29:39 WrapperNode [2023-02-17 20:29:39,555 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-17 20:29:39,556 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-17 20:29:39,556 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-17 20:29:39,556 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-17 20:29:39,560 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 08:29:39" (1/1) ... [2023-02-17 20:29:39,572 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 08:29:39" (1/1) ... [2023-02-17 20:29:39,593 INFO L138 Inliner]: procedures = 16, calls = 27, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 89 [2023-02-17 20:29:39,593 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-17 20:29:39,594 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-17 20:29:39,594 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-17 20:29:39,594 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-17 20:29:39,601 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 08:29:39" (1/1) ... [2023-02-17 20:29:39,602 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 08:29:39" (1/1) ... [2023-02-17 20:29:39,608 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 08:29:39" (1/1) ... [2023-02-17 20:29:39,609 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 08:29:39" (1/1) ... [2023-02-17 20:29:39,622 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 08:29:39" (1/1) ... [2023-02-17 20:29:39,625 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 08:29:39" (1/1) ... [2023-02-17 20:29:39,630 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 08:29:39" (1/1) ... [2023-02-17 20:29:39,631 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 08:29:39" (1/1) ... [2023-02-17 20:29:39,632 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-17 20:29:39,634 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-17 20:29:39,634 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-17 20:29:39,634 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-17 20:29:39,635 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 08:29:39" (1/1) ... [2023-02-17 20:29:39,639 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-17 20:29:39,647 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 20:29:39,687 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-02-17 20:29:39,704 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-02-17 20:29:39,731 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-17 20:29:39,732 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-02-17 20:29:39,732 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-02-17 20:29:39,732 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-17 20:29:39,732 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-02-17 20:29:39,732 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-02-17 20:29:39,733 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-17 20:29:39,733 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-17 20:29:39,733 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-02-17 20:29:39,733 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-02-17 20:29:39,779 INFO L235 CfgBuilder]: Building ICFG [2023-02-17 20:29:39,780 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-17 20:29:39,934 INFO L276 CfgBuilder]: Performing block encoding [2023-02-17 20:29:39,938 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-17 20:29:39,938 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2023-02-17 20:29:39,939 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 08:29:39 BoogieIcfgContainer [2023-02-17 20:29:39,939 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-17 20:29:39,941 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-17 20:29:39,941 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-17 20:29:39,943 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-17 20:29:39,943 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.02 08:29:39" (1/3) ... [2023-02-17 20:29:39,943 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@272d1efe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.02 08:29:39, skipping insertion in model container [2023-02-17 20:29:39,943 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 08:29:39" (2/3) ... [2023-02-17 20:29:39,944 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@272d1efe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.02 08:29:39, skipping insertion in model container [2023-02-17 20:29:39,944 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 08:29:39" (3/3) ... [2023-02-17 20:29:39,959 INFO L112 eAbstractionObserver]: Analyzing ICFG array7_pattern.c [2023-02-17 20:29:39,973 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-17 20:29:39,974 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-02-17 20:29:40,010 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-17 20:29:40,016 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;@1ca6aba0, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-17 20:29:40,017 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-02-17 20:29:40,020 INFO L276 IsEmpty]: Start isEmpty. Operand has 26 states, 20 states have (on average 1.5) internal successors, (30), 21 states have internal predecessors, (30), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-02-17 20:29:40,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-02-17 20:29:40,025 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 20:29:40,025 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 20:29:40,026 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 20:29:40,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 20:29:40,031 INFO L85 PathProgramCache]: Analyzing trace with hash -440982883, now seen corresponding path program 1 times [2023-02-17 20:29:40,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 20:29:40,037 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488898186] [2023-02-17 20:29:40,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 20:29:40,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 20:29:40,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 20:29:40,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-17 20:29:40,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 20:29:40,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 20:29:40,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 20:29:40,172 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488898186] [2023-02-17 20:29:40,173 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [488898186] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 20:29:40,173 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 20:29:40,173 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-17 20:29:40,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857427705] [2023-02-17 20:29:40,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 20:29:40,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-02-17 20:29:40,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 20:29:40,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-02-17 20:29:40,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-17 20:29:40,207 INFO L87 Difference]: Start difference. First operand has 26 states, 20 states have (on average 1.5) internal successors, (30), 21 states have internal predecessors, (30), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-17 20:29:40,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 20:29:40,220 INFO L93 Difference]: Finished difference Result 49 states and 71 transitions. [2023-02-17 20:29:40,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-02-17 20:29:40,221 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 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 15 [2023-02-17 20:29:40,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 20:29:40,225 INFO L225 Difference]: With dead ends: 49 [2023-02-17 20:29:40,226 INFO L226 Difference]: Without dead ends: 22 [2023-02-17 20:29:40,227 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 [2023-02-17 20:29:40,230 INFO L413 NwaCegarLoop]: 30 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, 30 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 [2023-02-17 20:29:40,230 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 20:29:40,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2023-02-17 20:29:40,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2023-02-17 20:29:40,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 states have internal predecessors, (20), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-02-17 20:29:40,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2023-02-17 20:29:40,254 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 15 [2023-02-17 20:29:40,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 20:29:40,254 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions. [2023-02-17 20:29:40,255 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-17 20:29:40,255 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2023-02-17 20:29:40,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-02-17 20:29:40,256 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 20:29:40,257 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 20:29:40,257 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-02-17 20:29:40,257 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 20:29:40,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 20:29:40,258 INFO L85 PathProgramCache]: Analyzing trace with hash 1396045698, now seen corresponding path program 1 times [2023-02-17 20:29:40,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 20:29:40,259 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558232836] [2023-02-17 20:29:40,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 20:29:40,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 20:29:40,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 20:29:40,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-17 20:29:40,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 20:29:40,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-02-17 20:29:40,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 20:29:40,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-02-17 20:29:40,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 20:29:40,473 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-02-17 20:29:40,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 20:29:40,473 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558232836] [2023-02-17 20:29:40,479 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [558232836] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 20:29:40,479 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 20:29:40,479 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-17 20:29:40,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954131751] [2023-02-17 20:29:40,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 20:29:40,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-17 20:29:40,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 20:29:40,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-17 20:29:40,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-17 20:29:40,482 INFO L87 Difference]: Start difference. First operand 22 states and 26 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-02-17 20:29:40,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 20:29:40,511 INFO L93 Difference]: Finished difference Result 27 states and 31 transitions. [2023-02-17 20:29:40,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-17 20:29:40,511 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 27 [2023-02-17 20:29:40,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 20:29:40,512 INFO L225 Difference]: With dead ends: 27 [2023-02-17 20:29:40,512 INFO L226 Difference]: Without dead ends: 23 [2023-02-17 20:29:40,512 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-02-17 20:29:40,513 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 4 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 59 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 [2023-02-17 20:29:40,514 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 59 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 20:29:40,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2023-02-17 20:29:40,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2023-02-17 20:29:40,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 18 states have internal predecessors, (21), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-02-17 20:29:40,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2023-02-17 20:29:40,523 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 27 [2023-02-17 20:29:40,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 20:29:40,525 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2023-02-17 20:29:40,525 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-02-17 20:29:40,525 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2023-02-17 20:29:40,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-02-17 20:29:40,526 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 20:29:40,526 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 20:29:40,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-02-17 20:29:40,527 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 20:29:40,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 20:29:40,527 INFO L85 PathProgramCache]: Analyzing trace with hash 1623352868, now seen corresponding path program 1 times [2023-02-17 20:29:40,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 20:29:40,528 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103232747] [2023-02-17 20:29:40,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 20:29:40,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 20:29:40,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 20:29:40,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-17 20:29:40,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 20:29:40,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-02-17 20:29:40,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 20:29:40,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-02-17 20:29:40,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 20:29:40,705 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-02-17 20:29:40,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 20:29:40,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103232747] [2023-02-17 20:29:40,708 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1103232747] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 20:29:40,708 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 20:29:40,709 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-17 20:29:40,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835912522] [2023-02-17 20:29:40,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 20:29:40,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-17 20:29:40,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 20:29:40,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-17 20:29:40,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-02-17 20:29:40,711 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-02-17 20:29:40,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 20:29:40,756 INFO L93 Difference]: Finished difference Result 43 states and 50 transitions. [2023-02-17 20:29:40,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-17 20:29:40,756 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 29 [2023-02-17 20:29:40,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 20:29:40,757 INFO L225 Difference]: With dead ends: 43 [2023-02-17 20:29:40,758 INFO L226 Difference]: Without dead ends: 26 [2023-02-17 20:29:40,758 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-02-17 20:29:40,760 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 15 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-17 20:29:40,762 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 61 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 20:29:40,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2023-02-17 20:29:40,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 24. [2023-02-17 20:29:40,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 19 states have internal predecessors, (22), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-02-17 20:29:40,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2023-02-17 20:29:40,766 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 29 [2023-02-17 20:29:40,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 20:29:40,766 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2023-02-17 20:29:40,766 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-02-17 20:29:40,767 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2023-02-17 20:29:40,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-02-17 20:29:40,767 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 20:29:40,767 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-02-17 20:29:40,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-02-17 20:29:40,768 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 20:29:40,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 20:29:40,768 INFO L85 PathProgramCache]: Analyzing trace with hash -1083978846, now seen corresponding path program 1 times [2023-02-17 20:29:40,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 20:29:40,768 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273098872] [2023-02-17 20:29:40,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 20:29:40,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 20:29:40,780 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-17 20:29:40,781 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1897597818] [2023-02-17 20:29:40,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 20:29:40,781 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 20:29:40,781 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 20:29:40,784 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-17 20:29:40,785 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-17 20:29:40,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 20:29:40,843 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 13 conjunts are in the unsatisfiable core [2023-02-17 20:29:40,847 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 20:29:40,915 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-02-17 20:29:40,916 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 20:29:41,054 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-17 20:29:41,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 20:29:41,055 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273098872] [2023-02-17 20:29:41,055 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-17 20:29:41,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1897597818] [2023-02-17 20:29:41,056 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1897597818] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 20:29:41,056 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-17 20:29:41,056 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10] total 15 [2023-02-17 20:29:41,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300787551] [2023-02-17 20:29:41,059 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-17 20:29:41,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-02-17 20:29:41,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 20:29:41,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-02-17 20:29:41,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2023-02-17 20:29:41,061 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand has 15 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 13 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) [2023-02-17 20:29:41,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 20:29:41,193 INFO L93 Difference]: Finished difference Result 73 states and 83 transitions. [2023-02-17 20:29:41,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-02-17 20:29:41,193 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 13 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 31 [2023-02-17 20:29:41,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 20:29:41,194 INFO L225 Difference]: With dead ends: 73 [2023-02-17 20:29:41,194 INFO L226 Difference]: Without dead ends: 42 [2023-02-17 20:29:41,194 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 45 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=105, Invalid=357, Unknown=0, NotChecked=0, Total=462 [2023-02-17 20:29:41,195 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 31 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-17 20:29:41,195 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 110 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-17 20:29:41,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2023-02-17 20:29:41,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 28. [2023-02-17 20:29:41,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 23 states have (on average 1.1304347826086956) internal successors, (26), 23 states have internal predecessors, (26), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-02-17 20:29:41,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2023-02-17 20:29:41,201 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 31 [2023-02-17 20:29:41,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 20:29:41,201 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2023-02-17 20:29:41,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 13 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) [2023-02-17 20:29:41,202 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2023-02-17 20:29:41,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-02-17 20:29:41,203 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 20:29:41,203 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 20:29:41,211 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-02-17 20:29:41,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 20:29:41,409 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 20:29:41,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 20:29:41,410 INFO L85 PathProgramCache]: Analyzing trace with hash -1214758882, now seen corresponding path program 2 times [2023-02-17 20:29:41,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 20:29:41,411 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032851461] [2023-02-17 20:29:41,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 20:29:41,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 20:29:41,430 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-17 20:29:41,430 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [344166700] [2023-02-17 20:29:41,430 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-17 20:29:41,430 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 20:29:41,430 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 20:29:41,445 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-17 20:29:41,464 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-02-17 20:29:41,551 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-17 20:29:41,551 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 20:29:41,552 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 7 conjunts are in the unsatisfiable core [2023-02-17 20:29:41,554 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 20:29:41,604 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 12 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-17 20:29:41,604 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 20:29:41,640 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-02-17 20:29:41,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 20:29:41,642 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032851461] [2023-02-17 20:29:41,643 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-17 20:29:41,643 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [344166700] [2023-02-17 20:29:41,643 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [344166700] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 20:29:41,643 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-17 20:29:41,643 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2023-02-17 20:29:41,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738159206] [2023-02-17 20:29:41,643 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-17 20:29:41,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-02-17 20:29:41,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 20:29:41,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-02-17 20:29:41,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2023-02-17 20:29:41,645 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand has 12 states, 12 states have (on average 3.25) internal successors, (39), 12 states have internal predecessors, (39), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2023-02-17 20:29:41,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 20:29:41,718 INFO L93 Difference]: Finished difference Result 40 states and 44 transitions. [2023-02-17 20:29:41,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-02-17 20:29:41,719 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), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 35 [2023-02-17 20:29:41,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 20:29:41,719 INFO L225 Difference]: With dead ends: 40 [2023-02-17 20:29:41,720 INFO L226 Difference]: Without dead ends: 36 [2023-02-17 20:29:41,720 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 56 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=103, Invalid=239, Unknown=0, NotChecked=0, Total=342 [2023-02-17 20:29:41,721 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 38 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-17 20:29:41,721 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 68 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 20:29:41,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2023-02-17 20:29:41,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2023-02-17 20:29:41,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 30 states have (on average 1.1) internal successors, (33), 30 states have internal predecessors, (33), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-02-17 20:29:41,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 39 transitions. [2023-02-17 20:29:41,725 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 39 transitions. Word has length 35 [2023-02-17 20:29:41,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 20:29:41,725 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 39 transitions. [2023-02-17 20:29:41,726 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), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2023-02-17 20:29:41,726 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 39 transitions. [2023-02-17 20:29:41,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-02-17 20:29:41,726 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 20:29:41,727 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 20:29:41,734 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-02-17 20:29:41,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 20:29:41,932 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 20:29:41,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 20:29:41,932 INFO L85 PathProgramCache]: Analyzing trace with hash -1618850078, now seen corresponding path program 3 times [2023-02-17 20:29:41,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 20:29:41,932 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103670494] [2023-02-17 20:29:41,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 20:29:41,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 20:29:41,942 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-17 20:29:41,942 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [273178300] [2023-02-17 20:29:41,942 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-17 20:29:41,942 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 20:29:41,943 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 20:29:41,946 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-17 20:29:41,952 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-02-17 20:29:42,111 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2023-02-17 20:29:42,111 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 20:29:42,114 WARN L261 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 89 conjunts are in the unsatisfiable core [2023-02-17 20:29:42,119 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 20:29:42,139 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 [2023-02-17 20:29:42,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-17 20:29:42,151 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 33 treesize of output 37 [2023-02-17 20:29:42,157 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 16 treesize of output 15 [2023-02-17 20:29:42,160 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 33 treesize of output 32 [2023-02-17 20:29:42,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-17 20:29:42,180 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 62 treesize of output 61 [2023-02-17 20:29:42,184 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-17 20:29:42,186 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 30 treesize of output 34 [2023-02-17 20:29:42,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-17 20:29:42,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-17 20:29:42,193 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 61 treesize of output 66 [2023-02-17 20:29:42,219 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-17 20:29:42,222 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 174 treesize of output 153 [2023-02-17 20:29:42,231 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 170 treesize of output 150 [2023-02-17 20:29:42,235 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-17 20:29:42,236 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-17 20:29:42,236 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 147 treesize of output 92 [2023-02-17 20:29:42,241 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-17 20:29:42,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-17 20:29:42,246 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 107 treesize of output 116 [2023-02-17 20:29:42,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-17 20:29:42,711 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 20:29:42,712 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 1016 treesize of output 1007 [2023-02-17 20:29:42,754 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-02-17 20:29:42,758 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-02-17 20:29:42,790 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-02-17 20:29:42,791 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-02-17 20:29:42,793 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-02-17 20:29:42,794 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-02-17 20:29:42,807 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-02-17 20:29:42,808 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-02-17 20:29:42,810 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-02-17 20:29:42,811 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-02-17 20:29:42,822 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-02-17 20:29:42,829 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-02-17 20:29:42,832 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-02-17 20:29:42,855 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-02-17 20:29:42,867 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-02-17 20:29:43,233 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-17 20:29:43,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-17 20:29:43,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-17 20:29:43,432 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-17 20:29:43,461 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-17 20:29:43,462 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-17 20:29:43,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-17 20:29:43,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-17 20:29:43,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-17 20:29:43,595 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-17 20:29:43,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-17 20:29:43,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-17 20:29:43,678 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-17 20:29:43,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-17 20:29:43,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-17 20:29:43,783 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-17 20:29:43,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-17 20:29:43,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-17 20:29:44,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-17 20:29:44,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-17 20:29:44,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-17 20:29:44,177 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-17 20:29:44,213 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-17 20:29:44,215 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-17 20:29:44,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-17 20:29:44,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-17 20:29:44,317 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-17 20:29:44,338 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-17 20:29:44,338 INFO L217 Elim1Store]: Index analysis took 1337 ms [2023-02-17 20:29:44,351 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 20:29:44,352 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 8 stores, 10 select indices, 10 select index equivalence classes, 32 disjoint index pairs (out of 45 index pairs), introduced 15 new quantified variables, introduced 14 case distinctions, treesize of input 1049 treesize of output 2611 [2023-02-17 20:30:23,241 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-02-17 20:30:23,279 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-02-17 20:30:23,329 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-02-17 20:30:23,367 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-02-17 20:30:23,521 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-02-17 20:30:23,595 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-02-17 20:30:23,662 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-02-17 20:30:23,695 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-02-17 20:30:23,752 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-02-17 20:30:23,804 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-02-17 20:30:23,851 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-02-17 20:30:23,892 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-02-17 20:30:28,601 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-02-17 20:30:28,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-17 20:30:28,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-17 20:30:28,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-17 20:30:28,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-17 20:30:28,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-17 20:30:29,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-17 20:30:29,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-17 20:30:29,212 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-17 20:30:30,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-17 20:30:30,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-17 20:30:30,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-17 20:30:30,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-17 20:30:30,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-17 20:30:30,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-17 20:30:30,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-17 20:30:31,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-17 20:30:31,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-17 20:30:31,140 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-17 20:30:31,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-17 20:30:31,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-17 20:30:31,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-17 20:30:31,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-17 20:30:31,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-17 20:30:31,601 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-17 20:30:31,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-17 20:30:39,244 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-17 20:30:39,250 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-17 20:30:39,345 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-17 20:30:39,468 INFO L217 Elim1Store]: Index analysis took 9056 ms [2023-02-17 20:30:41,787 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 20:30:41,858 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 169 stores, 9 select indices, 9 select index equivalence classes, 33 disjoint index pairs (out of 36 index pairs), introduced 176 new quantified variables, introduced 3 case distinctions, treesize of input 34562 treesize of output 1210680