./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-tiling/mbpr4.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6c24879c 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-tiling/mbpr4.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 d3770c63a87ff983494c9353997301d9eb30588c650f83b67bcf55f325443055 --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-11 22:21:52,279 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-11 22:21:52,281 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-11 22:21:52,302 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-11 22:21:52,304 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-11 22:21:52,305 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-11 22:21:52,308 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-11 22:21:52,313 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-11 22:21:52,314 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-11 22:21:52,318 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-11 22:21:52,319 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-11 22:21:52,320 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-11 22:21:52,320 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-11 22:21:52,322 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-11 22:21:52,323 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-11 22:21:52,325 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-11 22:21:52,325 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-11 22:21:52,326 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-11 22:21:52,328 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-11 22:21:52,333 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-11 22:21:52,334 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-11 22:21:52,335 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-11 22:21:52,335 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-11 22:21:52,336 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-11 22:21:52,337 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-11 22:21:52,344 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-11 22:21:52,344 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-11 22:21:52,344 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-11 22:21:52,345 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-11 22:21:52,345 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-11 22:21:52,346 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-11 22:21:52,346 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-11 22:21:52,347 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-11 22:21:52,348 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-11 22:21:52,348 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-11 22:21:52,349 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-11 22:21:52,349 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-11 22:21:52,349 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-11 22:21:52,350 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-11 22:21:52,350 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-11 22:21:52,350 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-11 22:21:52,352 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-11 22:21:52,352 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-11 22:21:52,377 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-11 22:21:52,378 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-11 22:21:52,378 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-11 22:21:52,378 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-11 22:21:52,378 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-11 22:21:52,379 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-11 22:21:52,379 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-11 22:21:52,379 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-11 22:21:52,379 INFO L138 SettingsManager]: * Use SBE=true [2022-07-11 22:21:52,380 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-11 22:21:52,380 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-11 22:21:52,380 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-11 22:21:52,381 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-11 22:21:52,381 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-11 22:21:52,381 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-11 22:21:52,381 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-11 22:21:52,381 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-11 22:21:52,381 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-11 22:21:52,381 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-11 22:21:52,382 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-11 22:21:52,382 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-11 22:21:52,383 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-11 22:21:52,383 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-11 22:21:52,383 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-11 22:21:52,383 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-11 22:21:52,383 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-11 22:21:52,383 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-11 22:21:52,383 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-11 22:21:52,384 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-11 22:21:52,384 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-11 22:21:52,384 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-11 22:21:52,384 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-11 22:21:52,384 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-11 22:21:52,384 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d3770c63a87ff983494c9353997301d9eb30588c650f83b67bcf55f325443055 [2022-07-11 22:21:52,571 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-11 22:21:52,594 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-11 22:21:52,595 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-11 22:21:52,596 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-11 22:21:52,597 INFO L275 PluginConnector]: CDTParser initialized [2022-07-11 22:21:52,598 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-tiling/mbpr4.c [2022-07-11 22:21:52,661 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4bb4a1234/d6cd38b093df4a7ea7b070471f17c820/FLAGd3a1aa305 [2022-07-11 22:21:53,036 INFO L306 CDTParser]: Found 1 translation units. [2022-07-11 22:21:53,037 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-tiling/mbpr4.c [2022-07-11 22:21:53,041 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4bb4a1234/d6cd38b093df4a7ea7b070471f17c820/FLAGd3a1aa305 [2022-07-11 22:21:53,054 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4bb4a1234/d6cd38b093df4a7ea7b070471f17c820 [2022-07-11 22:21:53,056 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-11 22:21:53,057 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-11 22:21:53,058 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-11 22:21:53,058 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-11 22:21:53,060 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-11 22:21:53,060 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.07 10:21:53" (1/1) ... [2022-07-11 22:21:53,061 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@275b8ec2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 10:21:53, skipping insertion in model container [2022-07-11 22:21:53,061 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.07 10:21:53" (1/1) ... [2022-07-11 22:21:53,066 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-11 22:21:53,076 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-11 22:21:53,183 WARN L230 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-tiling/mbpr4.c[396,409] [2022-07-11 22:21:53,219 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-11 22:21:53,226 INFO L203 MainTranslator]: Completed pre-run [2022-07-11 22:21:53,233 WARN L230 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-tiling/mbpr4.c[396,409] [2022-07-11 22:21:53,248 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-11 22:21:53,263 INFO L208 MainTranslator]: Completed translation [2022-07-11 22:21:53,263 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 10:21:53 WrapperNode [2022-07-11 22:21:53,264 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-11 22:21:53,264 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-11 22:21:53,264 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-11 22:21:53,265 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-11 22:21:53,269 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 10:21:53" (1/1) ... [2022-07-11 22:21:53,286 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 10:21:53" (1/1) ... [2022-07-11 22:21:53,303 INFO L137 Inliner]: procedures = 15, calls = 46, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 137 [2022-07-11 22:21:53,303 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-11 22:21:53,304 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-11 22:21:53,304 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-11 22:21:53,305 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-11 22:21:53,310 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 10:21:53" (1/1) ... [2022-07-11 22:21:53,310 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 10:21:53" (1/1) ... [2022-07-11 22:21:53,312 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 10:21:53" (1/1) ... [2022-07-11 22:21:53,313 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 10:21:53" (1/1) ... [2022-07-11 22:21:53,318 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 10:21:53" (1/1) ... [2022-07-11 22:21:53,322 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 10:21:53" (1/1) ... [2022-07-11 22:21:53,326 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 10:21:53" (1/1) ... [2022-07-11 22:21:53,328 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-11 22:21:53,328 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-11 22:21:53,328 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-11 22:21:53,329 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-11 22:21:53,331 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 10:21:53" (1/1) ... [2022-07-11 22:21:53,337 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-11 22:21:53,344 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-11 22:21:53,354 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) [2022-07-11 22:21:53,358 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 [2022-07-11 22:21:53,380 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-11 22:21:53,380 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-11 22:21:53,380 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-11 22:21:53,380 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-11 22:21:53,380 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-11 22:21:53,381 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-11 22:21:53,381 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-11 22:21:53,381 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-11 22:21:53,431 INFO L234 CfgBuilder]: Building ICFG [2022-07-11 22:21:53,433 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-11 22:21:53,575 INFO L275 CfgBuilder]: Performing block encoding [2022-07-11 22:21:53,579 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-11 22:21:53,580 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2022-07-11 22:21:53,581 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.07 10:21:53 BoogieIcfgContainer [2022-07-11 22:21:53,581 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-11 22:21:53,583 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-11 22:21:53,583 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-11 22:21:53,585 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-11 22:21:53,586 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.07 10:21:53" (1/3) ... [2022-07-11 22:21:53,587 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5884e96a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.07 10:21:53, skipping insertion in model container [2022-07-11 22:21:53,587 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 10:21:53" (2/3) ... [2022-07-11 22:21:53,587 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5884e96a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.07 10:21:53, skipping insertion in model container [2022-07-11 22:21:53,588 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.07 10:21:53" (3/3) ... [2022-07-11 22:21:53,589 INFO L111 eAbstractionObserver]: Analyzing ICFG mbpr4.c [2022-07-11 22:21:53,599 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-11 22:21:53,615 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-11 22:21:53,652 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-11 22:21:53,656 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=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@698577d7, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@142e1c76 [2022-07-11 22:21:53,657 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-11 22:21:53,661 INFO L276 IsEmpty]: Start isEmpty. Operand has 39 states, 37 states have (on average 1.5405405405405406) internal successors, (57), 38 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 22:21:53,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-07-11 22:21:53,690 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 22:21:53,691 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-11 22:21:53,691 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 22:21:53,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 22:21:53,695 INFO L85 PathProgramCache]: Analyzing trace with hash -912130766, now seen corresponding path program 1 times [2022-07-11 22:21:53,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 22:21:53,703 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857678716] [2022-07-11 22:21:53,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 22:21:53,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 22:21:53,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 22:21:53,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-11 22:21:53,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 22:21:53,850 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857678716] [2022-07-11 22:21:53,851 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [857678716] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 22:21:53,851 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 22:21:53,851 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-11 22:21:53,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338905534] [2022-07-11 22:21:53,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 22:21:53,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-11 22:21:53,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 22:21:53,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-11 22:21:53,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-11 22:21:53,888 INFO L87 Difference]: Start difference. First operand has 39 states, 37 states have (on average 1.5405405405405406) internal successors, (57), 38 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 22:21:53,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 22:21:53,907 INFO L93 Difference]: Finished difference Result 73 states and 106 transitions. [2022-07-11 22:21:53,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-11 22:21:53,909 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-07-11 22:21:53,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 22:21:53,915 INFO L225 Difference]: With dead ends: 73 [2022-07-11 22:21:53,915 INFO L226 Difference]: Without dead ends: 34 [2022-07-11 22:21:53,918 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-11 22:21:53,925 INFO L413 NwaCegarLoop]: 50 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, 50 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 [2022-07-11 22:21:53,926 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-11 22:21:53,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2022-07-11 22:21:53,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2022-07-11 22:21:53,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 33 states have (on average 1.303030303030303) internal successors, (43), 33 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 22:21:53,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 43 transitions. [2022-07-11 22:21:53,955 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 43 transitions. Word has length 19 [2022-07-11 22:21:53,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 22:21:53,956 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 43 transitions. [2022-07-11 22:21:53,956 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 22:21:53,957 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 43 transitions. [2022-07-11 22:21:53,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-07-11 22:21:53,958 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 22:21:53,958 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-11 22:21:53,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-11 22:21:53,959 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 22:21:53,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 22:21:53,961 INFO L85 PathProgramCache]: Analyzing trace with hash 560162573, now seen corresponding path program 1 times [2022-07-11 22:21:53,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 22:21:53,962 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645151030] [2022-07-11 22:21:53,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 22:21:53,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 22:21:54,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 22:21:54,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-11 22:21:54,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 22:21:54,086 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645151030] [2022-07-11 22:21:54,086 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [645151030] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 22:21:54,086 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 22:21:54,086 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-11 22:21:54,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91982132] [2022-07-11 22:21:54,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 22:21:54,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-11 22:21:54,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 22:21:54,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-11 22:21:54,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-11 22:21:54,090 INFO L87 Difference]: Start difference. First operand 34 states and 43 transitions. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 22:21:54,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 22:21:54,132 INFO L93 Difference]: Finished difference Result 43 states and 53 transitions. [2022-07-11 22:21:54,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-11 22:21:54,133 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-07-11 22:21:54,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 22:21:54,134 INFO L225 Difference]: With dead ends: 43 [2022-07-11 22:21:54,134 INFO L226 Difference]: Without dead ends: 41 [2022-07-11 22:21:54,137 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-11 22:21:54,139 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 9 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-11 22:21:54,139 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 119 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-11 22:21:54,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2022-07-11 22:21:54,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 36. [2022-07-11 22:21:54,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 35 states have (on average 1.2857142857142858) internal successors, (45), 35 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 22:21:54,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 45 transitions. [2022-07-11 22:21:54,148 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 45 transitions. Word has length 19 [2022-07-11 22:21:54,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 22:21:54,150 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 45 transitions. [2022-07-11 22:21:54,150 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 22:21:54,152 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 45 transitions. [2022-07-11 22:21:54,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-07-11 22:21:54,153 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 22:21:54,153 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-11 22:21:54,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-11 22:21:54,154 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 22:21:54,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 22:21:54,156 INFO L85 PathProgramCache]: Analyzing trace with hash 560222155, now seen corresponding path program 1 times [2022-07-11 22:21:54,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 22:21:54,160 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19525141] [2022-07-11 22:21:54,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 22:21:54,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 22:21:54,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 22:21:54,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-11 22:21:54,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 22:21:54,365 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19525141] [2022-07-11 22:21:54,365 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [19525141] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 22:21:54,365 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 22:21:54,366 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-11 22:21:54,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251841105] [2022-07-11 22:21:54,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 22:21:54,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-11 22:21:54,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 22:21:54,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-11 22:21:54,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-07-11 22:21:54,368 INFO L87 Difference]: Start difference. First operand 36 states and 45 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 22:21:54,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 22:21:54,469 INFO L93 Difference]: Finished difference Result 78 states and 102 transitions. [2022-07-11 22:21:54,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-11 22:21:54,469 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-07-11 22:21:54,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 22:21:54,470 INFO L225 Difference]: With dead ends: 78 [2022-07-11 22:21:54,470 INFO L226 Difference]: Without dead ends: 52 [2022-07-11 22:21:54,471 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-07-11 22:21:54,471 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 88 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-11 22:21:54,472 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 24 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-11 22:21:54,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2022-07-11 22:21:54,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 40. [2022-07-11 22:21:54,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 39 states have (on average 1.2564102564102564) internal successors, (49), 39 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 22:21:54,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 49 transitions. [2022-07-11 22:21:54,476 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 49 transitions. Word has length 19 [2022-07-11 22:21:54,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 22:21:54,476 INFO L495 AbstractCegarLoop]: Abstraction has 40 states and 49 transitions. [2022-07-11 22:21:54,477 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 22:21:54,477 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 49 transitions. [2022-07-11 22:21:54,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-07-11 22:21:54,477 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 22:21:54,478 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1] [2022-07-11 22:21:54,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-11 22:21:54,478 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 22:21:54,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 22:21:54,478 INFO L85 PathProgramCache]: Analyzing trace with hash -846989385, now seen corresponding path program 1 times [2022-07-11 22:21:54,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 22:21:54,479 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666695610] [2022-07-11 22:21:54,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 22:21:54,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 22:21:54,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 22:21:54,530 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-11 22:21:54,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 22:21:54,530 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666695610] [2022-07-11 22:21:54,530 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [666695610] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 22:21:54,530 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 22:21:54,531 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-11 22:21:54,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350189656] [2022-07-11 22:21:54,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 22:21:54,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-11 22:21:54,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 22:21:54,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-11 22:21:54,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-11 22:21:54,532 INFO L87 Difference]: Start difference. First operand 40 states and 49 transitions. Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 22:21:54,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 22:21:54,544 INFO L93 Difference]: Finished difference Result 55 states and 67 transitions. [2022-07-11 22:21:54,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-11 22:21:54,545 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2022-07-11 22:21:54,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 22:21:54,545 INFO L225 Difference]: With dead ends: 55 [2022-07-11 22:21:54,545 INFO L226 Difference]: Without dead ends: 40 [2022-07-11 22:21:54,546 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-11 22:21:54,546 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 17 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-11 22:21:54,547 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 35 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-11 22:21:54,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2022-07-11 22:21:54,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2022-07-11 22:21:54,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 39 states have (on average 1.2307692307692308) internal successors, (48), 39 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 22:21:54,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 48 transitions. [2022-07-11 22:21:54,551 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 48 transitions. Word has length 35 [2022-07-11 22:21:54,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 22:21:54,551 INFO L495 AbstractCegarLoop]: Abstraction has 40 states and 48 transitions. [2022-07-11 22:21:54,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 22:21:54,552 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 48 transitions. [2022-07-11 22:21:54,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-07-11 22:21:54,552 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 22:21:54,552 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1] [2022-07-11 22:21:54,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-11 22:21:54,553 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 22:21:54,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 22:21:54,553 INFO L85 PathProgramCache]: Analyzing trace with hash -1240016395, now seen corresponding path program 1 times [2022-07-11 22:21:54,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 22:21:54,554 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045166998] [2022-07-11 22:21:54,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 22:21:54,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 22:21:54,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 22:21:54,885 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-11 22:21:54,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 22:21:54,886 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045166998] [2022-07-11 22:21:54,886 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1045166998] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-11 22:21:54,887 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [814454972] [2022-07-11 22:21:54,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 22:21:54,887 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-11 22:21:54,887 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-11 22:21:54,889 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) [2022-07-11 22:21:54,907 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-11 22:21:54,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 22:21:55,001 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 47 conjunts are in the unsatisfiable core [2022-07-11 22:21:55,008 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-11 22:21:55,103 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-07-11 22:21:55,140 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:21:55,141 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:21:55,141 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:21:55,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:21:55,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:21:55,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:21:55,146 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 38 [2022-07-11 22:21:55,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:21:55,207 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 29 treesize of output 28 [2022-07-11 22:21:55,235 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:21:55,236 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:21:55,238 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:21:55,242 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 32 [2022-07-11 22:21:55,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:21:55,291 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 29 treesize of output 28 [2022-07-11 22:21:55,312 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:21:55,313 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:21:55,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:21:55,316 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 32 [2022-07-11 22:21:55,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:21:55,382 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 29 treesize of output 28 [2022-07-11 22:21:55,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:21:55,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:21:55,416 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:21:55,417 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:21:55,417 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:21:55,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:21:55,420 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-11 22:21:55,420 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 41 [2022-07-11 22:21:55,503 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-11 22:21:55,503 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-11 22:21:55,943 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 31 treesize of output 27 [2022-07-11 22:21:55,952 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 55 treesize of output 51 [2022-07-11 22:21:55,964 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 15 treesize of output 13 [2022-07-11 22:21:55,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:21:56,056 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-11 22:21:56,056 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [814454972] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-11 22:21:56,056 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-11 22:21:56,056 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10, 11] total 25 [2022-07-11 22:21:56,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791993266] [2022-07-11 22:21:56,057 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-11 22:21:56,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-07-11 22:21:56,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 22:21:56,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-07-11 22:21:56,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=498, Unknown=0, NotChecked=0, Total=600 [2022-07-11 22:21:56,058 INFO L87 Difference]: Start difference. First operand 40 states and 48 transitions. Second operand has 25 states, 25 states have (on average 3.88) internal successors, (97), 25 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 22:21:57,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 22:21:57,051 INFO L93 Difference]: Finished difference Result 174 states and 212 transitions. [2022-07-11 22:21:57,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-07-11 22:21:57,051 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.88) internal successors, (97), 25 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2022-07-11 22:21:57,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 22:21:57,052 INFO L225 Difference]: With dead ends: 174 [2022-07-11 22:21:57,052 INFO L226 Difference]: Without dead ends: 141 [2022-07-11 22:21:57,053 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 66 SyntacticMatches, 9 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 784 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=644, Invalid=2326, Unknown=0, NotChecked=0, Total=2970 [2022-07-11 22:21:57,053 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 327 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 489 mSolverCounterSat, 202 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 327 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 739 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 202 IncrementalHoareTripleChecker+Valid, 489 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 48 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-11 22:21:57,054 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [327 Valid, 155 Invalid, 739 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [202 Valid, 489 Invalid, 0 Unknown, 48 Unchecked, 0.3s Time] [2022-07-11 22:21:57,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2022-07-11 22:21:57,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 67. [2022-07-11 22:21:57,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 66 states have (on average 1.2272727272727273) internal successors, (81), 66 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 22:21:57,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 81 transitions. [2022-07-11 22:21:57,061 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 81 transitions. Word has length 35 [2022-07-11 22:21:57,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 22:21:57,062 INFO L495 AbstractCegarLoop]: Abstraction has 67 states and 81 transitions. [2022-07-11 22:21:57,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.88) internal successors, (97), 25 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 22:21:57,062 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 81 transitions. [2022-07-11 22:21:57,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-07-11 22:21:57,063 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 22:21:57,063 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-11 22:21:57,084 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-11 22:21:57,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-11 22:21:57,279 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 22:21:57,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 22:21:57,280 INFO L85 PathProgramCache]: Analyzing trace with hash 505076392, now seen corresponding path program 1 times [2022-07-11 22:21:57,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 22:21:57,280 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376274221] [2022-07-11 22:21:57,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 22:21:57,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 22:21:57,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 22:21:57,447 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-11 22:21:57,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 22:21:57,448 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376274221] [2022-07-11 22:21:57,448 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1376274221] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-11 22:21:57,448 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1224678680] [2022-07-11 22:21:57,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 22:21:57,448 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-11 22:21:57,448 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-11 22:21:57,464 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) [2022-07-11 22:21:57,465 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-11 22:21:57,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 22:21:57,521 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 40 conjunts are in the unsatisfiable core [2022-07-11 22:21:57,525 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-11 22:21:57,580 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-07-11 22:21:57,619 INFO L356 Elim1Store]: treesize reduction 163, result has 13.8 percent of original size [2022-07-11 22:21:57,620 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 31 treesize of output 38 [2022-07-11 22:21:57,667 INFO L356 Elim1Store]: treesize reduction 42, result has 22.2 percent of original size [2022-07-11 22:21:57,667 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 28 [2022-07-11 22:21:57,690 INFO L356 Elim1Store]: treesize reduction 70, result has 19.5 percent of original size [2022-07-11 22:21:57,690 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 40 treesize of output 32 [2022-07-11 22:21:57,737 INFO L356 Elim1Store]: treesize reduction 42, result has 22.2 percent of original size [2022-07-11 22:21:57,737 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 28 [2022-07-11 22:21:57,780 INFO L356 Elim1Store]: treesize reduction 175, result has 12.9 percent of original size [2022-07-11 22:21:57,781 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 5 case distinctions, treesize of input 46 treesize of output 41 [2022-07-11 22:21:57,886 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-11 22:21:57,886 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-11 22:21:58,206 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 35 treesize of output 31 [2022-07-11 22:21:58,209 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 67 treesize of output 59 [2022-07-11 22:21:58,223 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 17 treesize of output 15 [2022-07-11 22:21:58,225 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 34 treesize of output 30 [2022-07-11 22:21:58,361 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-11 22:21:58,361 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1224678680] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-11 22:21:58,361 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-11 22:21:58,361 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 12] total 26 [2022-07-11 22:21:58,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146646824] [2022-07-11 22:21:58,361 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-11 22:21:58,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-07-11 22:21:58,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 22:21:58,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-07-11 22:21:58,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=539, Unknown=0, NotChecked=0, Total=650 [2022-07-11 22:21:58,363 INFO L87 Difference]: Start difference. First operand 67 states and 81 transitions. Second operand has 26 states, 26 states have (on average 4.423076923076923) internal successors, (115), 26 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 22:21:59,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 22:21:59,294 INFO L93 Difference]: Finished difference Result 198 states and 238 transitions. [2022-07-11 22:21:59,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-07-11 22:21:59,294 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 4.423076923076923) internal successors, (115), 26 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2022-07-11 22:21:59,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 22:21:59,295 INFO L225 Difference]: With dead ends: 198 [2022-07-11 22:21:59,295 INFO L226 Difference]: Without dead ends: 151 [2022-07-11 22:21:59,296 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 69 SyntacticMatches, 8 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 599 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=611, Invalid=1939, Unknown=0, NotChecked=0, Total=2550 [2022-07-11 22:21:59,297 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 453 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 442 mSolverCounterSat, 261 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 453 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 704 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 261 IncrementalHoareTripleChecker+Valid, 442 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-11 22:21:59,297 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [453 Valid, 104 Invalid, 704 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [261 Valid, 442 Invalid, 0 Unknown, 1 Unchecked, 0.4s Time] [2022-07-11 22:21:59,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2022-07-11 22:21:59,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 87. [2022-07-11 22:21:59,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 86 states have (on average 1.186046511627907) internal successors, (102), 86 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 22:21:59,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 102 transitions. [2022-07-11 22:21:59,306 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 102 transitions. Word has length 41 [2022-07-11 22:21:59,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 22:21:59,307 INFO L495 AbstractCegarLoop]: Abstraction has 87 states and 102 transitions. [2022-07-11 22:21:59,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 4.423076923076923) internal successors, (115), 26 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 22:21:59,307 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 102 transitions. [2022-07-11 22:21:59,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-07-11 22:21:59,308 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 22:21:59,308 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1] [2022-07-11 22:21:59,331 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-11 22:21:59,525 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,SelfDestructingSolverStorable5 [2022-07-11 22:21:59,525 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 22:21:59,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 22:21:59,526 INFO L85 PathProgramCache]: Analyzing trace with hash 1880770843, now seen corresponding path program 2 times [2022-07-11 22:21:59,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 22:21:59,526 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683970415] [2022-07-11 22:21:59,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 22:21:59,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 22:21:59,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 22:21:59,725 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-11 22:21:59,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 22:21:59,725 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [683970415] [2022-07-11 22:21:59,726 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [683970415] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-11 22:21:59,726 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1495877266] [2022-07-11 22:21:59,726 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-11 22:21:59,726 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-11 22:21:59,726 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-11 22:21:59,727 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) [2022-07-11 22:21:59,728 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-11 22:21:59,786 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-11 22:21:59,786 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-11 22:21:59,787 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 36 conjunts are in the unsatisfiable core [2022-07-11 22:21:59,790 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-11 22:21:59,868 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-07-11 22:21:59,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:21:59,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:21:59,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:21:59,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:21:59,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:21:59,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:21:59,892 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 38 [2022-07-11 22:21:59,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:21:59,930 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 29 treesize of output 28 [2022-07-11 22:21:59,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:21:59,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:21:59,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:21:59,957 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:21:59,957 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:21:59,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:21:59,960 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-11 22:21:59,960 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 41 [2022-07-11 22:22:00,126 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-11 22:22:00,126 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-11 22:22:00,363 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 35 treesize of output 31 [2022-07-11 22:22:00,365 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 67 treesize of output 59 [2022-07-11 22:22:00,484 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-11 22:22:00,485 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1495877266] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-11 22:22:00,485 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-11 22:22:00,485 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11, 11] total 27 [2022-07-11 22:22:00,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453196176] [2022-07-11 22:22:00,485 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-11 22:22:00,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-07-11 22:22:00,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 22:22:00,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-07-11 22:22:00,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=596, Unknown=0, NotChecked=0, Total=702 [2022-07-11 22:22:00,487 INFO L87 Difference]: Start difference. First operand 87 states and 102 transitions. Second operand has 27 states, 27 states have (on average 4.925925925925926) internal successors, (133), 27 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 22:22:01,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 22:22:01,378 INFO L93 Difference]: Finished difference Result 194 states and 226 transitions. [2022-07-11 22:22:01,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-07-11 22:22:01,378 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 4.925925925925926) internal successors, (133), 27 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2022-07-11 22:22:01,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 22:22:01,379 INFO L225 Difference]: With dead ends: 194 [2022-07-11 22:22:01,379 INFO L226 Difference]: Without dead ends: 139 [2022-07-11 22:22:01,380 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 76 SyntacticMatches, 6 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 599 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=506, Invalid=1944, Unknown=0, NotChecked=0, Total=2450 [2022-07-11 22:22:01,380 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 371 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 513 mSolverCounterSat, 225 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 371 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 738 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 225 IncrementalHoareTripleChecker+Valid, 513 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-11 22:22:01,381 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [371 Valid, 126 Invalid, 738 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [225 Valid, 513 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-11 22:22:01,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2022-07-11 22:22:01,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 85. [2022-07-11 22:22:01,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 84 states have (on average 1.1428571428571428) internal successors, (96), 84 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 22:22:01,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 96 transitions. [2022-07-11 22:22:01,389 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 96 transitions. Word has length 47 [2022-07-11 22:22:01,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 22:22:01,390 INFO L495 AbstractCegarLoop]: Abstraction has 85 states and 96 transitions. [2022-07-11 22:22:01,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 4.925925925925926) internal successors, (133), 27 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 22:22:01,390 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 96 transitions. [2022-07-11 22:22:01,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-07-11 22:22:01,391 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 22:22:01,392 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1] [2022-07-11 22:22:01,409 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-11 22:22:01,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-11 22:22:01,609 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 22:22:01,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 22:22:01,610 INFO L85 PathProgramCache]: Analyzing trace with hash 1960980289, now seen corresponding path program 3 times [2022-07-11 22:22:01,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 22:22:01,610 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183445163] [2022-07-11 22:22:01,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 22:22:01,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 22:22:01,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 22:22:01,804 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 33 proven. 20 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-11 22:22:01,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 22:22:01,804 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183445163] [2022-07-11 22:22:01,805 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [183445163] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-11 22:22:01,805 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2132943728] [2022-07-11 22:22:01,805 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-11 22:22:01,805 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-11 22:22:01,805 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-11 22:22:01,806 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) [2022-07-11 22:22:01,807 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-11 22:22:01,948 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-07-11 22:22:01,948 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-11 22:22:01,950 INFO L263 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 13 conjunts are in the unsatisfiable core [2022-07-11 22:22:01,951 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-11 22:22:02,323 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 52 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-11 22:22:02,323 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-11 22:22:02,469 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 52 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-11 22:22:02,469 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2132943728] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-11 22:22:02,469 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-11 22:22:02,470 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 11] total 30 [2022-07-11 22:22:02,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760741990] [2022-07-11 22:22:02,470 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-11 22:22:02,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-07-11 22:22:02,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 22:22:02,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-07-11 22:22:02,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=226, Invalid=644, Unknown=0, NotChecked=0, Total=870 [2022-07-11 22:22:02,472 INFO L87 Difference]: Start difference. First operand 85 states and 96 transitions. Second operand has 30 states, 30 states have (on average 5.466666666666667) internal successors, (164), 30 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 22:22:02,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 22:22:02,760 INFO L93 Difference]: Finished difference Result 201 states and 226 transitions. [2022-07-11 22:22:02,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-11 22:22:02,760 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 5.466666666666667) internal successors, (164), 30 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2022-07-11 22:22:02,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 22:22:02,761 INFO L225 Difference]: With dead ends: 201 [2022-07-11 22:22:02,761 INFO L226 Difference]: Without dead ends: 88 [2022-07-11 22:22:02,762 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 99 SyntacticMatches, 2 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 366 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=316, Invalid=874, Unknown=0, NotChecked=0, Total=1190 [2022-07-11 22:22:02,762 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 242 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 378 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 242 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 483 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 378 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-11 22:22:02,762 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [242 Valid, 153 Invalid, 483 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 378 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-11 22:22:02,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2022-07-11 22:22:02,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 76. [2022-07-11 22:22:02,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 75 states have (on average 1.1066666666666667) internal successors, (83), 75 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 22:22:02,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 83 transitions. [2022-07-11 22:22:02,768 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 83 transitions. Word has length 59 [2022-07-11 22:22:02,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 22:22:02,769 INFO L495 AbstractCegarLoop]: Abstraction has 76 states and 83 transitions. [2022-07-11 22:22:02,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 5.466666666666667) internal successors, (164), 30 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 22:22:02,769 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 83 transitions. [2022-07-11 22:22:02,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-07-11 22:22:02,770 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 22:22:02,770 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-11 22:22:02,788 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-07-11 22:22:02,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-11 22:22:02,988 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 22:22:02,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 22:22:02,988 INFO L85 PathProgramCache]: Analyzing trace with hash 1835840619, now seen corresponding path program 4 times [2022-07-11 22:22:02,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 22:22:02,988 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259572950] [2022-07-11 22:22:02,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 22:22:02,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 22:22:03,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 22:22:03,171 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 26 proven. 30 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-07-11 22:22:03,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 22:22:03,172 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259572950] [2022-07-11 22:22:03,172 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1259572950] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-11 22:22:03,172 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1557171650] [2022-07-11 22:22:03,172 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-07-11 22:22:03,173 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-11 22:22:03,173 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-11 22:22:03,174 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) [2022-07-11 22:22:03,175 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-11 22:22:03,246 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-07-11 22:22:03,246 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-11 22:22:03,247 INFO L263 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 24 conjunts are in the unsatisfiable core [2022-07-11 22:22:03,250 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-11 22:22:03,298 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-07-11 22:22:03,339 INFO L356 Elim1Store]: treesize reduction 295, result has 11.1 percent of original size [2022-07-11 22:22:03,339 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 45 treesize of output 52 [2022-07-11 22:22:03,365 INFO L356 Elim1Store]: treesize reduction 33, result has 21.4 percent of original size [2022-07-11 22:22:03,366 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 25 [2022-07-11 22:22:03,393 INFO L356 Elim1Store]: treesize reduction 259, result has 11.6 percent of original size [2022-07-11 22:22:03,394 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 42 treesize of output 49 [2022-07-11 22:22:03,527 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 19 treesize of output 7 [2022-07-11 22:22:03,540 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 26 proven. 30 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-07-11 22:22:03,540 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-11 22:22:05,667 WARN L833 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~i~0#1_105| Int)) (or (forall ((v_ArrVal_401 Int)) (< (select (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#volArray~0#1.base|) (+ (* 16 |v_ULTIMATE.start_main_~i~0#1_105|) (- 4) |c_ULTIMATE.start_main_~#volArray~0#1.offset|) v_ArrVal_401) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| 12)) |c_ULTIMATE.start_main_~MINVAL~0#1|)) (not (<= (+ |c_ULTIMATE.start_main_~i~0#1| 1) |v_ULTIMATE.start_main_~i~0#1_105|)))) is different from false [2022-07-11 22:22:05,733 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 49 treesize of output 47 [2022-07-11 22:22:05,737 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 13864 treesize of output 13800 [2022-07-11 22:22:47,361 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 26 proven. 29 refuted. 0 times theorem prover too weak. 20 trivial. 1 not checked. [2022-07-11 22:22:47,361 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1557171650] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-11 22:22:47,361 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-11 22:22:47,361 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 13] total 30 [2022-07-11 22:22:47,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546478657] [2022-07-11 22:22:47,362 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-11 22:22:47,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-07-11 22:22:47,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 22:22:47,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-07-11 22:22:47,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=646, Unknown=1, NotChecked=54, Total=870 [2022-07-11 22:22:47,363 INFO L87 Difference]: Start difference. First operand 76 states and 83 transitions. Second operand has 30 states, 30 states have (on average 5.5) internal successors, (165), 30 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 22:22:49,476 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse0 (+ (* 16 |c_ULTIMATE.start_main_~i~0#1|) (- 4) |c_ULTIMATE.start_main_~#volArray~0#1.offset|))) (and (= |c_ULTIMATE.start_main_~#volArray~0#1.offset| 0) (= (+ (- 2) |c_ULTIMATE.start_main_~MINVAL~0#1|) 0) (= (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#volArray~0#1.base|) .cse0) 0) (forall ((|v_ULTIMATE.start_main_~i~0#1_105| Int)) (or (forall ((v_ArrVal_401 Int)) (< (select (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#volArray~0#1.base|) (+ (* 16 |v_ULTIMATE.start_main_~i~0#1_105|) (- 4) |c_ULTIMATE.start_main_~#volArray~0#1.offset|) v_ArrVal_401) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| 12)) |c_ULTIMATE.start_main_~MINVAL~0#1|)) (not (<= (+ |c_ULTIMATE.start_main_~i~0#1| 1) |v_ULTIMATE.start_main_~i~0#1_105|)))) (= 12 .cse0))) is different from false [2022-07-11 22:22:51,522 WARN L833 $PredicateComparison]: unable to prove that (and (= |c_ULTIMATE.start_main_~#volArray~0#1.offset| 0) (= (+ (- 2) |c_ULTIMATE.start_main_~MINVAL~0#1|) 0) (forall ((|v_ULTIMATE.start_main_~i~0#1_105| Int)) (or (forall ((v_ArrVal_401 Int)) (< (select (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#volArray~0#1.base|) (+ (* 16 |v_ULTIMATE.start_main_~i~0#1_105|) (- 4) |c_ULTIMATE.start_main_~#volArray~0#1.offset|) v_ArrVal_401) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| 12)) |c_ULTIMATE.start_main_~MINVAL~0#1|)) (not (<= (+ |c_ULTIMATE.start_main_~i~0#1| 1) |v_ULTIMATE.start_main_~i~0#1_105|)))) (= (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#volArray~0#1.base|) 12) 0)) is different from false [2022-07-11 22:22:51,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 22:22:51,610 INFO L93 Difference]: Finished difference Result 95 states and 104 transitions. [2022-07-11 22:22:51,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-11 22:22:51,610 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 5.5) internal successors, (165), 30 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2022-07-11 22:22:51,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 22:22:51,611 INFO L225 Difference]: With dead ends: 95 [2022-07-11 22:22:51,611 INFO L226 Difference]: Without dead ends: 85 [2022-07-11 22:22:51,612 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 136 SyntacticMatches, 5 SemanticMatches, 32 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 433 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=205, Invalid=734, Unknown=3, NotChecked=180, Total=1122 [2022-07-11 22:22:51,612 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 177 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 429 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 216 SdHoareTripleChecker+Invalid, 618 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 429 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 137 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-11 22:22:51,612 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [177 Valid, 216 Invalid, 618 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 429 Invalid, 0 Unknown, 137 Unchecked, 0.2s Time] [2022-07-11 22:22:51,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2022-07-11 22:22:51,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 76. [2022-07-11 22:22:51,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 75 states have (on average 1.0933333333333333) internal successors, (82), 75 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 22:22:51,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 82 transitions. [2022-07-11 22:22:51,624 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 82 transitions. Word has length 75 [2022-07-11 22:22:51,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 22:22:51,625 INFO L495 AbstractCegarLoop]: Abstraction has 76 states and 82 transitions. [2022-07-11 22:22:51,625 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 5.5) internal successors, (165), 30 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 22:22:51,625 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 82 transitions. [2022-07-11 22:22:51,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-07-11 22:22:51,626 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 22:22:51,626 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-11 22:22:51,651 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-11 22:22:51,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-11 22:22:51,844 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 22:22:51,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 22:22:51,845 INFO L85 PathProgramCache]: Analyzing trace with hash 1442813609, now seen corresponding path program 5 times [2022-07-11 22:22:51,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 22:22:51,845 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413864339] [2022-07-11 22:22:51,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 22:22:51,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 22:22:51,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 22:22:52,255 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 8 proven. 66 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-11 22:22:52,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 22:22:52,255 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413864339] [2022-07-11 22:22:52,255 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [413864339] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-11 22:22:52,255 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [868252985] [2022-07-11 22:22:52,256 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-07-11 22:22:52,256 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-11 22:22:52,256 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-11 22:22:52,257 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) [2022-07-11 22:22:52,258 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-11 22:22:54,505 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-07-11 22:22:54,505 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-11 22:22:54,514 INFO L263 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 63 conjunts are in the unsatisfiable core [2022-07-11 22:22:54,524 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-11 22:22:54,585 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-07-11 22:22:54,623 INFO L356 Elim1Store]: treesize reduction 181, result has 13.4 percent of original size [2022-07-11 22:22:54,623 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 40 [2022-07-11 22:22:54,668 INFO L356 Elim1Store]: treesize reduction 33, result has 21.4 percent of original size [2022-07-11 22:22:54,669 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 25 [2022-07-11 22:22:54,696 INFO L356 Elim1Store]: treesize reduction 259, result has 11.6 percent of original size [2022-07-11 22:22:54,696 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 42 treesize of output 49 [2022-07-11 22:22:54,727 INFO L356 Elim1Store]: treesize reduction 42, result has 22.2 percent of original size [2022-07-11 22:22:54,728 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 28 [2022-07-11 22:22:54,745 INFO L356 Elim1Store]: treesize reduction 84, result has 18.4 percent of original size [2022-07-11 22:22:54,745 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 42 treesize of output 34 [2022-07-11 22:22:54,777 INFO L356 Elim1Store]: treesize reduction 33, result has 21.4 percent of original size [2022-07-11 22:22:54,777 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 25 [2022-07-11 22:22:54,817 INFO L356 Elim1Store]: treesize reduction 259, result has 11.6 percent of original size [2022-07-11 22:22:54,818 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 42 treesize of output 49 [2022-07-11 22:22:54,856 INFO L356 Elim1Store]: treesize reduction 42, result has 22.2 percent of original size [2022-07-11 22:22:54,857 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 28 [2022-07-11 22:22:54,878 INFO L356 Elim1Store]: treesize reduction 84, result has 18.4 percent of original size [2022-07-11 22:22:54,878 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 42 treesize of output 34 [2022-07-11 22:22:54,902 INFO L356 Elim1Store]: treesize reduction 33, result has 21.4 percent of original size [2022-07-11 22:22:54,902 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 25 [2022-07-11 22:22:54,940 INFO L356 Elim1Store]: treesize reduction 259, result has 11.6 percent of original size [2022-07-11 22:22:54,941 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 42 treesize of output 49 [2022-07-11 22:22:54,977 INFO L356 Elim1Store]: treesize reduction 42, result has 22.2 percent of original size [2022-07-11 22:22:54,977 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 28 [2022-07-11 22:22:55,001 INFO L356 Elim1Store]: treesize reduction 84, result has 18.4 percent of original size [2022-07-11 22:22:55,002 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 42 treesize of output 34 [2022-07-11 22:22:55,166 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 19 treesize of output 7 [2022-07-11 22:22:55,172 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 8 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-11 22:22:55,173 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-11 22:23:09,816 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 17 treesize of output 15 [2022-07-11 22:23:09,818 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 34 treesize of output 30 [2022-07-11 22:23:09,901 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 8 proven. 62 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-11 22:23:09,901 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [868252985] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-11 22:23:09,902 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-11 22:23:09,902 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 12, 13] total 34 [2022-07-11 22:23:09,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262565539] [2022-07-11 22:23:09,902 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-11 22:23:09,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-07-11 22:23:09,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 22:23:09,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-07-11 22:23:09,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=984, Unknown=0, NotChecked=0, Total=1122 [2022-07-11 22:23:09,903 INFO L87 Difference]: Start difference. First operand 76 states and 82 transitions. Second operand has 34 states, 34 states have (on average 6.147058823529412) internal successors, (209), 34 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 22:23:10,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 22:23:10,985 INFO L93 Difference]: Finished difference Result 167 states and 185 transitions. [2022-07-11 22:23:10,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-07-11 22:23:10,985 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 6.147058823529412) internal successors, (209), 34 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2022-07-11 22:23:10,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 22:23:10,986 INFO L225 Difference]: With dead ends: 167 [2022-07-11 22:23:10,986 INFO L226 Difference]: Without dead ends: 157 [2022-07-11 22:23:10,987 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 131 SyntacticMatches, 31 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1142 ImplicationChecksByTransitivity, 15.3s TimeCoverageRelationStatistics Valid=519, Invalid=2673, Unknown=0, NotChecked=0, Total=3192 [2022-07-11 22:23:10,987 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 580 mSDsluCounter, 234 mSDsCounter, 0 mSdLazyCounter, 1060 mSolverCounterSat, 355 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 580 SdHoareTripleChecker+Valid, 264 SdHoareTripleChecker+Invalid, 1706 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 355 IncrementalHoareTripleChecker+Valid, 1060 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 291 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-11 22:23:10,987 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [580 Valid, 264 Invalid, 1706 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [355 Valid, 1060 Invalid, 0 Unknown, 291 Unchecked, 0.5s Time] [2022-07-11 22:23:10,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2022-07-11 22:23:10,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 82. [2022-07-11 22:23:10,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 81 states have (on average 1.0864197530864197) internal successors, (88), 81 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 22:23:10,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 88 transitions. [2022-07-11 22:23:10,997 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 88 transitions. Word has length 75 [2022-07-11 22:23:10,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 22:23:10,998 INFO L495 AbstractCegarLoop]: Abstraction has 82 states and 88 transitions. [2022-07-11 22:23:10,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 6.147058823529412) internal successors, (209), 34 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 22:23:10,999 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 88 transitions. [2022-07-11 22:23:11,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-07-11 22:23:11,003 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 22:23:11,003 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-11 22:23:11,011 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-11 22:23:11,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-11 22:23:11,203 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 22:23:11,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 22:23:11,204 INFO L85 PathProgramCache]: Analyzing trace with hash 1969766492, now seen corresponding path program 6 times [2022-07-11 22:23:11,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 22:23:11,204 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351334838] [2022-07-11 22:23:11,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 22:23:11,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 22:23:11,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 22:23:11,590 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 10 proven. 92 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-11 22:23:11,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 22:23:11,590 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351334838] [2022-07-11 22:23:11,590 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [351334838] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-11 22:23:11,590 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [432546923] [2022-07-11 22:23:11,591 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-07-11 22:23:11,591 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-11 22:23:11,591 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-11 22:23:11,592 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) [2022-07-11 22:23:11,593 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-11 22:23:11,999 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2022-07-11 22:23:11,999 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-11 22:23:12,003 INFO L263 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 61 conjunts are in the unsatisfiable core [2022-07-11 22:23:12,006 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-11 22:23:12,084 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-07-11 22:23:12,126 INFO L356 Elim1Store]: treesize reduction 181, result has 13.4 percent of original size [2022-07-11 22:23:12,127 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 40 [2022-07-11 22:23:12,179 INFO L356 Elim1Store]: treesize reduction 33, result has 21.4 percent of original size [2022-07-11 22:23:12,180 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 25 [2022-07-11 22:23:12,209 INFO L356 Elim1Store]: treesize reduction 259, result has 11.6 percent of original size [2022-07-11 22:23:12,209 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 42 treesize of output 49 [2022-07-11 22:23:12,240 INFO L356 Elim1Store]: treesize reduction 42, result has 22.2 percent of original size [2022-07-11 22:23:12,240 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 28 [2022-07-11 22:23:12,261 INFO L356 Elim1Store]: treesize reduction 84, result has 18.4 percent of original size [2022-07-11 22:23:12,262 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 42 treesize of output 34 [2022-07-11 22:23:12,285 INFO L356 Elim1Store]: treesize reduction 33, result has 21.4 percent of original size [2022-07-11 22:23:12,286 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 25 [2022-07-11 22:23:12,314 INFO L356 Elim1Store]: treesize reduction 259, result has 11.6 percent of original size [2022-07-11 22:23:12,316 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 42 treesize of output 49 [2022-07-11 22:23:12,345 INFO L356 Elim1Store]: treesize reduction 42, result has 22.2 percent of original size [2022-07-11 22:23:12,345 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 28 [2022-07-11 22:23:12,400 INFO L356 Elim1Store]: treesize reduction 193, result has 12.7 percent of original size [2022-07-11 22:23:12,402 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 5 case distinctions, treesize of input 48 treesize of output 43 [2022-07-11 22:23:12,718 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 10 proven. 88 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-11 22:23:12,718 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-11 22:23:13,545 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 35 treesize of output 31 [2022-07-11 22:23:13,548 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 67 treesize of output 59 [2022-07-11 22:23:13,564 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 17 treesize of output 15 [2022-07-11 22:23:13,567 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 34 treesize of output 30 [2022-07-11 22:23:13,761 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 96 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-07-11 22:23:13,761 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [432546923] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-11 22:23:13,761 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-11 22:23:13,761 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 20] total 47 [2022-07-11 22:23:13,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015997810] [2022-07-11 22:23:13,762 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-11 22:23:13,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-07-11 22:23:13,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 22:23:13,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-07-11 22:23:13,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=257, Invalid=1905, Unknown=0, NotChecked=0, Total=2162 [2022-07-11 22:23:13,764 INFO L87 Difference]: Start difference. First operand 82 states and 88 transitions. Second operand has 47 states, 47 states have (on average 4.787234042553192) internal successors, (225), 47 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 22:23:18,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 22:23:18,007 INFO L93 Difference]: Finished difference Result 489 states and 532 transitions. [2022-07-11 22:23:18,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 121 states. [2022-07-11 22:23:18,008 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 4.787234042553192) internal successors, (225), 47 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2022-07-11 22:23:18,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 22:23:18,011 INFO L225 Difference]: With dead ends: 489 [2022-07-11 22:23:18,011 INFO L226 Difference]: Without dead ends: 479 [2022-07-11 22:23:18,016 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 329 GetRequests, 146 SyntacticMatches, 28 SemanticMatches, 155 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8818 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=2690, Invalid=21802, Unknown=0, NotChecked=0, Total=24492 [2022-07-11 22:23:18,016 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 718 mSDsluCounter, 436 mSDsCounter, 0 mSdLazyCounter, 2012 mSolverCounterSat, 378 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 718 SdHoareTripleChecker+Valid, 464 SdHoareTripleChecker+Invalid, 2858 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 378 IncrementalHoareTripleChecker+Valid, 2012 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 468 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-11 22:23:18,017 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [718 Valid, 464 Invalid, 2858 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [378 Valid, 2012 Invalid, 0 Unknown, 468 Unchecked, 1.0s Time] [2022-07-11 22:23:18,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 479 states. [2022-07-11 22:23:18,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 479 to 237. [2022-07-11 22:23:18,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 237 states, 236 states have (on average 1.0932203389830508) internal successors, (258), 236 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 22:23:18,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 258 transitions. [2022-07-11 22:23:18,037 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 258 transitions. Word has length 81 [2022-07-11 22:23:18,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 22:23:18,037 INFO L495 AbstractCegarLoop]: Abstraction has 237 states and 258 transitions. [2022-07-11 22:23:18,037 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 4.787234042553192) internal successors, (225), 47 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 22:23:18,038 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 258 transitions. [2022-07-11 22:23:18,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-07-11 22:23:18,038 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 22:23:18,039 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-11 22:23:18,057 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-07-11 22:23:18,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-11 22:23:18,253 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 22:23:18,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 22:23:18,253 INFO L85 PathProgramCache]: Analyzing trace with hash 1625921487, now seen corresponding path program 7 times [2022-07-11 22:23:18,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 22:23:18,253 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987907906] [2022-07-11 22:23:18,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 22:23:18,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 22:23:18,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 22:23:18,615 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 12 proven. 118 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-07-11 22:23:18,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 22:23:18,615 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987907906] [2022-07-11 22:23:18,615 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [987907906] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-11 22:23:18,615 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1483698459] [2022-07-11 22:23:18,616 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-07-11 22:23:18,616 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-11 22:23:18,616 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-11 22:23:18,617 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) [2022-07-11 22:23:18,617 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-07-11 22:23:18,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 22:23:18,715 INFO L263 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 51 conjunts are in the unsatisfiable core [2022-07-11 22:23:18,731 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-11 22:23:18,835 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-07-11 22:23:18,876 INFO L356 Elim1Store]: treesize reduction 181, result has 13.4 percent of original size [2022-07-11 22:23:18,877 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 40 [2022-07-11 22:23:18,923 INFO L356 Elim1Store]: treesize reduction 33, result has 21.4 percent of original size [2022-07-11 22:23:18,923 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 25 [2022-07-11 22:23:18,952 INFO L356 Elim1Store]: treesize reduction 259, result has 11.6 percent of original size [2022-07-11 22:23:18,952 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 42 treesize of output 49 [2022-07-11 22:23:18,980 INFO L356 Elim1Store]: treesize reduction 42, result has 22.2 percent of original size [2022-07-11 22:23:18,981 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 28 [2022-07-11 22:23:19,028 INFO L356 Elim1Store]: treesize reduction 193, result has 12.7 percent of original size [2022-07-11 22:23:19,028 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 48 treesize of output 43 [2022-07-11 22:23:19,424 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 12 proven. 114 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-11 22:23:19,424 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-11 22:23:19,945 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 35 treesize of output 31 [2022-07-11 22:23:19,947 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 67 treesize of output 59 [2022-07-11 22:23:20,200 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 0 proven. 124 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-07-11 22:23:20,200 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1483698459] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-11 22:23:20,200 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-11 22:23:20,200 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 17, 17] total 45 [2022-07-11 22:23:20,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913648606] [2022-07-11 22:23:20,200 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-11 22:23:20,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-07-11 22:23:20,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 22:23:20,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-07-11 22:23:20,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=189, Invalid=1791, Unknown=0, NotChecked=0, Total=1980 [2022-07-11 22:23:20,202 INFO L87 Difference]: Start difference. First operand 237 states and 258 transitions. Second operand has 45 states, 45 states have (on average 5.133333333333334) internal successors, (231), 45 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 22:23:24,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 22:23:24,100 INFO L93 Difference]: Finished difference Result 621 states and 682 transitions. [2022-07-11 22:23:24,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2022-07-11 22:23:24,100 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 5.133333333333334) internal successors, (231), 45 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 87 [2022-07-11 22:23:24,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 22:23:24,102 INFO L225 Difference]: With dead ends: 621 [2022-07-11 22:23:24,102 INFO L226 Difference]: Without dead ends: 605 [2022-07-11 22:23:24,105 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 298 GetRequests, 148 SyntacticMatches, 31 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4802 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=1614, Invalid=12906, Unknown=0, NotChecked=0, Total=14520 [2022-07-11 22:23:24,106 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 980 mSDsluCounter, 425 mSDsCounter, 0 mSdLazyCounter, 2684 mSolverCounterSat, 491 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 980 SdHoareTripleChecker+Valid, 460 SdHoareTripleChecker+Invalid, 3333 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 491 IncrementalHoareTripleChecker+Valid, 2684 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 158 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-11 22:23:24,106 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [980 Valid, 460 Invalid, 3333 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [491 Valid, 2684 Invalid, 0 Unknown, 158 Unchecked, 1.2s Time] [2022-07-11 22:23:24,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 605 states. [2022-07-11 22:23:24,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 605 to 337. [2022-07-11 22:23:24,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 337 states, 336 states have (on average 1.0892857142857142) internal successors, (366), 336 states have internal predecessors, (366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 22:23:24,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 366 transitions. [2022-07-11 22:23:24,135 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 366 transitions. Word has length 87 [2022-07-11 22:23:24,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 22:23:24,135 INFO L495 AbstractCegarLoop]: Abstraction has 337 states and 366 transitions. [2022-07-11 22:23:24,135 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 5.133333333333334) internal successors, (231), 45 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 22:23:24,135 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 366 transitions. [2022-07-11 22:23:24,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-07-11 22:23:24,136 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 22:23:24,136 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-11 22:23:24,156 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-07-11 22:23:24,341 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,SelfDestructingSolverStorable11 [2022-07-11 22:23:24,341 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 22:23:24,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 22:23:24,342 INFO L85 PathProgramCache]: Analyzing trace with hash -486455342, now seen corresponding path program 8 times [2022-07-11 22:23:24,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 22:23:24,342 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776505622] [2022-07-11 22:23:24,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 22:23:24,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 22:23:24,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 22:23:24,491 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 19 proven. 15 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2022-07-11 22:23:24,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 22:23:24,491 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776505622] [2022-07-11 22:23:24,491 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1776505622] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-11 22:23:24,491 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [96541331] [2022-07-11 22:23:24,491 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-11 22:23:24,491 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-11 22:23:24,491 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-11 22:23:24,493 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) [2022-07-11 22:23:24,494 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-07-11 22:23:24,599 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-11 22:23:24,599 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-11 22:23:24,600 INFO L263 TraceCheckSpWp]: Trace formula consists of 316 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-11 22:23:24,602 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-11 22:23:24,724 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 6 proven. 24 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2022-07-11 22:23:24,725 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-11 22:23:24,932 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 6 proven. 24 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2022-07-11 22:23:24,932 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [96541331] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-11 22:23:24,932 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-11 22:23:24,933 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 9] total 22 [2022-07-11 22:23:24,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132620787] [2022-07-11 22:23:24,933 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-11 22:23:24,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-07-11 22:23:24,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 22:23:24,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-07-11 22:23:24,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=375, Unknown=0, NotChecked=0, Total=462 [2022-07-11 22:23:24,934 INFO L87 Difference]: Start difference. First operand 337 states and 366 transitions. Second operand has 22 states, 22 states have (on average 4.7727272727272725) internal successors, (105), 22 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 22:23:25,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 22:23:25,607 INFO L93 Difference]: Finished difference Result 686 states and 745 transitions. [2022-07-11 22:23:25,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-07-11 22:23:25,607 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 4.7727272727272725) internal successors, (105), 22 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 89 [2022-07-11 22:23:25,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 22:23:25,609 INFO L225 Difference]: With dead ends: 686 [2022-07-11 22:23:25,609 INFO L226 Difference]: Without dead ends: 374 [2022-07-11 22:23:25,611 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 173 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 397 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=252, Invalid=1154, Unknown=0, NotChecked=0, Total=1406 [2022-07-11 22:23:25,613 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 355 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 950 mSolverCounterSat, 130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 355 SdHoareTripleChecker+Valid, 211 SdHoareTripleChecker+Invalid, 1080 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 950 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-11 22:23:25,614 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [355 Valid, 211 Invalid, 1080 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [130 Valid, 950 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-11 22:23:25,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 374 states. [2022-07-11 22:23:25,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 374 to 307. [2022-07-11 22:23:25,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 307 states, 306 states have (on average 1.0686274509803921) internal successors, (327), 306 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 22:23:25,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 327 transitions. [2022-07-11 22:23:25,641 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 327 transitions. Word has length 89 [2022-07-11 22:23:25,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 22:23:25,641 INFO L495 AbstractCegarLoop]: Abstraction has 307 states and 327 transitions. [2022-07-11 22:23:25,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 4.7727272727272725) internal successors, (105), 22 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 22:23:25,641 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 327 transitions. [2022-07-11 22:23:25,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-07-11 22:23:25,642 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 22:23:25,642 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 8, 8, 8, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-11 22:23:25,665 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-07-11 22:23:25,859 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,SelfDestructingSolverStorable12 [2022-07-11 22:23:25,859 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 22:23:25,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 22:23:25,860 INFO L85 PathProgramCache]: Analyzing trace with hash 1196232693, now seen corresponding path program 9 times [2022-07-11 22:23:25,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 22:23:25,860 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96010664] [2022-07-11 22:23:25,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 22:23:25,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 22:23:25,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 22:23:26,171 INFO L134 CoverageAnalysis]: Checked inductivity of 224 backedges. 157 proven. 49 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-11 22:23:26,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 22:23:26,172 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96010664] [2022-07-11 22:23:26,172 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [96010664] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-11 22:23:26,172 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1840776314] [2022-07-11 22:23:26,172 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-11 22:23:26,172 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-11 22:23:26,172 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-11 22:23:26,173 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) [2022-07-11 22:23:26,175 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-07-11 22:23:26,955 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2022-07-11 22:23:26,955 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-11 22:23:26,961 INFO L263 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 16 conjunts are in the unsatisfiable core [2022-07-11 22:23:26,962 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-11 22:23:27,582 INFO L134 CoverageAnalysis]: Checked inductivity of 224 backedges. 200 proven. 6 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-11 22:23:27,583 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-11 22:23:27,901 INFO L134 CoverageAnalysis]: Checked inductivity of 224 backedges. 200 proven. 6 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-11 22:23:27,901 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1840776314] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-11 22:23:27,901 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-11 22:23:27,901 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 16] total 46 [2022-07-11 22:23:27,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127202792] [2022-07-11 22:23:27,902 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-11 22:23:27,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-07-11 22:23:27,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 22:23:27,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-07-11 22:23:27,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=512, Invalid=1558, Unknown=0, NotChecked=0, Total=2070 [2022-07-11 22:23:27,903 INFO L87 Difference]: Start difference. First operand 307 states and 327 transitions. Second operand has 46 states, 46 states have (on average 5.413043478260869) internal successors, (249), 46 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 22:23:28,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 22:23:28,384 INFO L93 Difference]: Finished difference Result 379 states and 402 transitions. [2022-07-11 22:23:28,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-11 22:23:28,385 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 5.413043478260869) internal successors, (249), 46 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-07-11 22:23:28,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 22:23:28,389 INFO L225 Difference]: With dead ends: 379 [2022-07-11 22:23:28,389 INFO L226 Difference]: Without dead ends: 289 [2022-07-11 22:23:28,390 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 169 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 972 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=678, Invalid=2078, Unknown=0, NotChecked=0, Total=2756 [2022-07-11 22:23:28,390 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 544 mSDsluCounter, 237 mSDsCounter, 0 mSdLazyCounter, 636 mSolverCounterSat, 153 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 544 SdHoareTripleChecker+Valid, 279 SdHoareTripleChecker+Invalid, 789 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 153 IncrementalHoareTripleChecker+Valid, 636 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-11 22:23:28,390 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [544 Valid, 279 Invalid, 789 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [153 Valid, 636 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-11 22:23:28,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2022-07-11 22:23:28,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 277. [2022-07-11 22:23:28,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 277 states, 276 states have (on average 1.0724637681159421) internal successors, (296), 276 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 22:23:28,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 296 transitions. [2022-07-11 22:23:28,414 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 296 transitions. Word has length 99 [2022-07-11 22:23:28,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 22:23:28,414 INFO L495 AbstractCegarLoop]: Abstraction has 277 states and 296 transitions. [2022-07-11 22:23:28,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 5.413043478260869) internal successors, (249), 46 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 22:23:28,415 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 296 transitions. [2022-07-11 22:23:28,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-07-11 22:23:28,416 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 22:23:28,416 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-11 22:23:28,423 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-07-11 22:23:28,621 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,SelfDestructingSolverStorable13 [2022-07-11 22:23:28,621 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 22:23:28,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 22:23:28,622 INFO L85 PathProgramCache]: Analyzing trace with hash 1809604481, now seen corresponding path program 10 times [2022-07-11 22:23:28,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 22:23:28,622 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125148788] [2022-07-11 22:23:28,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 22:23:28,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 22:23:28,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 22:23:28,770 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 19 proven. 24 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2022-07-11 22:23:28,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 22:23:28,771 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125148788] [2022-07-11 22:23:28,771 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [125148788] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-11 22:23:28,771 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [809757268] [2022-07-11 22:23:28,771 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-07-11 22:23:28,771 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-11 22:23:28,771 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-11 22:23:28,772 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) [2022-07-11 22:23:28,773 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-07-11 22:23:28,871 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-07-11 22:23:28,871 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-11 22:23:28,872 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-11 22:23:28,874 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-11 22:23:29,021 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 15 proven. 28 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2022-07-11 22:23:29,021 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-11 22:23:29,293 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 15 proven. 28 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2022-07-11 22:23:29,293 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [809757268] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-11 22:23:29,294 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-11 22:23:29,294 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 11] total 26 [2022-07-11 22:23:29,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784779705] [2022-07-11 22:23:29,294 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-11 22:23:29,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-07-11 22:23:29,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 22:23:29,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-07-11 22:23:29,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=531, Unknown=0, NotChecked=0, Total=650 [2022-07-11 22:23:29,295 INFO L87 Difference]: Start difference. First operand 277 states and 296 transitions. Second operand has 26 states, 26 states have (on average 4.615384615384615) internal successors, (120), 26 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 22:23:30,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 22:23:30,097 INFO L93 Difference]: Finished difference Result 481 states and 516 transitions. [2022-07-11 22:23:30,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-07-11 22:23:30,098 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 4.615384615384615) internal successors, (120), 26 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2022-07-11 22:23:30,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 22:23:30,099 INFO L225 Difference]: With dead ends: 481 [2022-07-11 22:23:30,099 INFO L226 Difference]: Without dead ends: 237 [2022-07-11 22:23:30,099 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 194 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 693 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=381, Invalid=1875, Unknown=0, NotChecked=0, Total=2256 [2022-07-11 22:23:30,100 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 457 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 1191 mSolverCounterSat, 170 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 457 SdHoareTripleChecker+Valid, 216 SdHoareTripleChecker+Invalid, 1361 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 170 IncrementalHoareTripleChecker+Valid, 1191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-11 22:23:30,100 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [457 Valid, 216 Invalid, 1361 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [170 Valid, 1191 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-11 22:23:30,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2022-07-11 22:23:30,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 215. [2022-07-11 22:23:30,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 214 states have (on average 1.0560747663551402) internal successors, (226), 214 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 22:23:30,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 226 transitions. [2022-07-11 22:23:30,118 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 226 transitions. Word has length 101 [2022-07-11 22:23:30,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 22:23:30,118 INFO L495 AbstractCegarLoop]: Abstraction has 215 states and 226 transitions. [2022-07-11 22:23:30,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 4.615384615384615) internal successors, (120), 26 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 22:23:30,119 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 226 transitions. [2022-07-11 22:23:30,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-07-11 22:23:30,119 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 22:23:30,120 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-11 22:23:30,137 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-07-11 22:23:30,331 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,SelfDestructingSolverStorable14 [2022-07-11 22:23:30,334 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 22:23:30,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 22:23:30,334 INFO L85 PathProgramCache]: Analyzing trace with hash -1663105360, now seen corresponding path program 11 times [2022-07-11 22:23:30,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 22:23:30,334 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437660494] [2022-07-11 22:23:30,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 22:23:30,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 22:23:30,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 22:23:32,714 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 11 proven. 181 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-11 22:23:32,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 22:23:32,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437660494] [2022-07-11 22:23:32,715 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [437660494] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-11 22:23:32,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [536847376] [2022-07-11 22:23:32,715 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-07-11 22:23:32,715 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-11 22:23:32,715 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-11 22:23:32,716 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) [2022-07-11 22:23:32,717 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-07-11 22:24:30,787 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2022-07-11 22:24:30,787 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-11 22:24:30,878 INFO L263 TraceCheckSpWp]: Trace formula consists of 412 conjuncts, 118 conjunts are in the unsatisfiable core [2022-07-11 22:24:30,887 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-11 22:24:31,037 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-07-11 22:24:31,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:31,075 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:31,076 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:31,076 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:31,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:31,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:31,079 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 52 [2022-07-11 22:24:31,127 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:31,128 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 26 treesize of output 25 [2022-07-11 22:24:31,169 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:31,170 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:31,171 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:31,171 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:31,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:31,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:31,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:31,174 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:31,176 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:31,176 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:31,178 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-11 22:24:31,179 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 10 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 54 treesize of output 64 [2022-07-11 22:24:31,235 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:31,235 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:31,236 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:31,238 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-11 22:24:31,238 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 1 case distinctions, treesize of input 35 treesize of output 37 [2022-07-11 22:24:31,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:31,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:31,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:31,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:31,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:31,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:31,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:31,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:31,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:31,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:31,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:31,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:31,302 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:31,303 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:31,303 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:31,305 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-11 22:24:31,305 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 15 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 63 treesize of output 76 [2022-07-11 22:24:31,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:31,373 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:31,373 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:31,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:31,375 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:31,375 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:31,377 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-11 22:24:31,377 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 3 case distinctions, treesize of input 44 treesize of output 49 [2022-07-11 22:24:31,432 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:31,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:31,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:31,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:31,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:31,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:31,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:31,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:31,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:31,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:31,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:31,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:31,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:31,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:31,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:31,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:31,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:31,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:31,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:31,444 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:31,445 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:31,447 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-11 22:24:31,447 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 21 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 72 treesize of output 88 [2022-07-11 22:24:33,116 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:33,117 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:33,117 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:33,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:33,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:33,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:33,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:33,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:33,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:33,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:33,124 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-11 22:24:33,124 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 6 case distinctions, treesize of input 56 treesize of output 64 [2022-07-11 22:24:33,176 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:33,177 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:33,177 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:33,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:33,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:33,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:33,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:33,180 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-11 22:24:33,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:33,182 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:33,182 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:33,183 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:33,184 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:33,184 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:33,185 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:33,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:33,189 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-11 22:24:33,189 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 81 treesize of output 91 [2022-07-11 22:24:33,684 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:33,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:33,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:33,687 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:33,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:33,689 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:33,690 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:33,690 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:33,691 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:33,692 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:33,695 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-11 22:24:33,695 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 6 case distinctions, treesize of input 56 treesize of output 64 [2022-07-11 22:24:33,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:33,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:33,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:33,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:33,718 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:33,719 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:33,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:33,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:33,721 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:33,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:33,722 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-11 22:24:33,723 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:33,723 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:33,724 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:33,725 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:33,726 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:33,726 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:33,729 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-11 22:24:33,729 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 16 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 99 treesize of output 91 [2022-07-11 22:24:34,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:34,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:34,363 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:34,363 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:34,364 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:34,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:34,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:34,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:34,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:34,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:34,370 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-11 22:24:34,370 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 6 case distinctions, treesize of input 56 treesize of output 64 [2022-07-11 22:24:34,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:34,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:34,394 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:34,394 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:34,395 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-11 22:24:34,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:34,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:34,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:34,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:34,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:34,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:34,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:34,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:34,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:34,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:34,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:34,405 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-11 22:24:34,406 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 15 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 72 treesize of output 88 [2022-07-11 22:24:36,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:36,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:36,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:36,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:36,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:36,087 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:36,089 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-11 22:24:36,089 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 3 case distinctions, treesize of input 47 treesize of output 52 [2022-07-11 22:24:36,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:36,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:36,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:36,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:36,110 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:36,110 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:36,111 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:36,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:36,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:36,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:36,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:36,114 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:36,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:36,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:36,126 INFO L356 Elim1Store]: treesize reduction 60, result has 16.7 percent of original size [2022-07-11 22:24:36,127 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 14 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 72 treesize of output 76 [2022-07-11 22:24:38,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:38,224 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:38,224 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:38,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:38,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:38,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:38,230 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-11 22:24:38,230 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 3 case distinctions, treesize of input 47 treesize of output 52 [2022-07-11 22:24:38,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:38,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:38,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:38,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:38,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:38,595 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:38,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:38,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:38,597 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:38,597 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:38,599 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-11 22:24:38,599 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:38,600 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:38,601 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:38,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:38,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:38,605 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-11 22:24:38,606 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 84 treesize of output 94 [2022-07-11 22:24:38,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:38,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:38,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:38,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:38,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:38,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:38,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:38,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:38,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:38,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:38,919 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-11 22:24:38,920 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 6 case distinctions, treesize of input 59 treesize of output 67 [2022-07-11 22:24:38,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:38,941 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:38,941 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:38,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:38,944 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-11 22:24:38,945 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:38,945 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:38,946 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:38,946 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:38,947 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:38,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:38,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:38,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:38,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:38,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:38,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:38,954 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-11 22:24:38,954 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 87 treesize of output 97 [2022-07-11 22:24:39,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:39,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:39,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:39,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:39,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:39,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:39,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:39,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:39,125 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:39,126 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:39,127 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-11 22:24:39,128 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 6 case distinctions, treesize of input 62 treesize of output 70 [2022-07-11 22:24:39,148 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:39,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:39,150 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:39,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:39,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:39,152 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:39,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:39,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:39,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:39,155 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:39,155 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:39,156 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:39,157 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:39,157 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:39,158 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:39,159 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:39,160 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:39,160 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:39,161 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:39,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:39,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:39,164 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-11 22:24:39,165 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 21 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 78 treesize of output 94 [2022-07-11 22:24:39,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:39,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:39,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:39,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:39,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:39,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:39,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:39,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:39,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:39,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:39,270 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-11 22:24:39,270 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 6 case distinctions, treesize of input 56 treesize of output 64 [2022-07-11 22:24:39,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:39,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:39,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:39,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:39,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:39,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:39,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:39,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:39,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:39,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:39,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:39,292 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:39,292 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:39,293 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:39,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:39,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:39,295 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:39,295 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:39,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:39,297 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 22:24:39,305 INFO L356 Elim1Store]: treesize reduction 34, result has 37.0 percent of original size [2022-07-11 22:24:39,305 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 20 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 72 treesize of output 96 [2022-07-11 22:24:39,867 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-11 22:24:39,867 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 29 treesize of output 13 [2022-07-11 22:24:39,874 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 10 proven. 176 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-11 22:24:39,874 INFO L328 TraceCheckSpWp]: Computing backward predicates...