./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-patterns/array3_pattern.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb692b52 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/array-patterns/array3_pattern.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8c9f77a5f5cfb41429e6b2e557580f5f8a855ca718c241fb5a07541ef3b21ab2 --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 10:14:12,296 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 10:14:12,298 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 10:14:12,324 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 10:14:12,324 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 10:14:12,325 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 10:14:12,327 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 10:14:12,328 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 10:14:12,329 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 10:14:12,330 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 10:14:12,331 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 10:14:12,332 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 10:14:12,332 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 10:14:12,333 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 10:14:12,334 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 10:14:12,335 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 10:14:12,338 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 10:14:12,341 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 10:14:12,343 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 10:14:12,348 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 10:14:12,350 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 10:14:12,355 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 10:14:12,356 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 10:14:12,357 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 10:14:12,357 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 10:14:12,360 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 10:14:12,365 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 10:14:12,366 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 10:14:12,367 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 10:14:12,367 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 10:14:12,368 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 10:14:12,368 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 10:14:12,369 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 10:14:12,370 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 10:14:12,371 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 10:14:12,373 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 10:14:12,373 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 10:14:12,374 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 10:14:12,374 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 10:14:12,374 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 10:14:12,375 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 10:14:12,376 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 10:14:12,377 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-19 10:14:12,402 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 10:14:12,402 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 10:14:12,403 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 10:14:12,403 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 10:14:12,404 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 10:14:12,404 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 10:14:12,404 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 10:14:12,405 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 10:14:12,405 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 10:14:12,406 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 10:14:12,406 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-19 10:14:12,406 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 10:14:12,406 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-19 10:14:12,406 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 10:14:12,407 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 10:14:12,407 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 10:14:12,407 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 10:14:12,407 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-19 10:14:12,407 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 10:14:12,407 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 10:14:12,408 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 10:14:12,408 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 10:14:12,408 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 10:14:12,408 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 10:14:12,408 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 10:14:12,409 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 10:14:12,409 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 10:14:12,409 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 10:14:12,409 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 10:14:12,410 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 10:14:12,410 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 10:14:12,410 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 10:14:12,410 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 10:14:12,410 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8c9f77a5f5cfb41429e6b2e557580f5f8a855ca718c241fb5a07541ef3b21ab2 [2022-07-19 10:14:12,642 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 10:14:12,672 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 10:14:12,674 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 10:14:12,675 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 10:14:12,676 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 10:14:12,677 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-patterns/array3_pattern.c [2022-07-19 10:14:12,755 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2c0456f1b/23d014d6b54b43a4a6ebbca2efb97a12/FLAGed26eb3ba [2022-07-19 10:14:13,187 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 10:14:13,188 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-patterns/array3_pattern.c [2022-07-19 10:14:13,195 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2c0456f1b/23d014d6b54b43a4a6ebbca2efb97a12/FLAGed26eb3ba [2022-07-19 10:14:13,211 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2c0456f1b/23d014d6b54b43a4a6ebbca2efb97a12 [2022-07-19 10:14:13,213 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 10:14:13,214 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 10:14:13,215 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 10:14:13,216 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 10:14:13,218 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 10:14:13,219 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 10:14:13" (1/1) ... [2022-07-19 10:14:13,221 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b37eea7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:14:13, skipping insertion in model container [2022-07-19 10:14:13,221 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 10:14:13" (1/1) ... [2022-07-19 10:14:13,226 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 10:14:13,243 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 10:14:13,379 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-patterns/array3_pattern.c[1393,1406] [2022-07-19 10:14:13,397 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 10:14:13,402 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 10:14:13,411 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-patterns/array3_pattern.c[1393,1406] [2022-07-19 10:14:13,420 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 10:14:13,435 INFO L208 MainTranslator]: Completed translation [2022-07-19 10:14:13,435 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:14:13 WrapperNode [2022-07-19 10:14:13,435 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 10:14:13,436 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 10:14:13,436 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 10:14:13,437 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 10:14:13,443 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:14:13" (1/1) ... [2022-07-19 10:14:13,459 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:14:13" (1/1) ... [2022-07-19 10:14:13,480 INFO L137 Inliner]: procedures = 17, calls = 26, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 88 [2022-07-19 10:14:13,483 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 10:14:13,484 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 10:14:13,484 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 10:14:13,484 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 10:14:13,491 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:14:13" (1/1) ... [2022-07-19 10:14:13,492 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:14:13" (1/1) ... [2022-07-19 10:14:13,497 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:14:13" (1/1) ... [2022-07-19 10:14:13,497 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:14:13" (1/1) ... [2022-07-19 10:14:13,503 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:14:13" (1/1) ... [2022-07-19 10:14:13,506 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:14:13" (1/1) ... [2022-07-19 10:14:13,508 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:14:13" (1/1) ... [2022-07-19 10:14:13,509 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 10:14:13,510 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 10:14:13,510 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 10:14:13,510 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 10:14:13,523 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:14:13" (1/1) ... [2022-07-19 10:14:13,531 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 10:14:13,539 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 10:14:13,549 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) [2022-07-19 10:14:13,550 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 [2022-07-19 10:14:13,582 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 10:14:13,583 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-19 10:14:13,583 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-19 10:14:13,583 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 10:14:13,583 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-19 10:14:13,583 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-19 10:14:13,584 INFO L130 BoogieDeclarations]: Found specification of procedure square [2022-07-19 10:14:13,584 INFO L138 BoogieDeclarations]: Found implementation of procedure square [2022-07-19 10:14:13,584 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 10:14:13,584 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 10:14:13,584 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-19 10:14:13,584 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-19 10:14:13,635 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 10:14:13,636 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 10:14:13,753 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 10:14:13,758 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 10:14:13,759 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-07-19 10:14:13,760 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 10:14:13 BoogieIcfgContainer [2022-07-19 10:14:13,760 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 10:14:13,762 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 10:14:13,762 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 10:14:13,770 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 10:14:13,770 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 10:14:13" (1/3) ... [2022-07-19 10:14:13,771 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7eec3390 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 10:14:13, skipping insertion in model container [2022-07-19 10:14:13,780 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:14:13" (2/3) ... [2022-07-19 10:14:13,780 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7eec3390 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 10:14:13, skipping insertion in model container [2022-07-19 10:14:13,781 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 10:14:13" (3/3) ... [2022-07-19 10:14:13,782 INFO L111 eAbstractionObserver]: Analyzing ICFG array3_pattern.c [2022-07-19 10:14:13,794 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 10:14:13,794 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-19 10:14:13,835 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 10:14:13,848 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@1ea0af84, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@5dfc7054 [2022-07-19 10:14:13,849 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-19 10:14:13,853 INFO L276 IsEmpty]: Start isEmpty. Operand has 32 states, 24 states have (on average 1.4166666666666667) internal successors, (34), 25 states have internal predecessors, (34), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-07-19 10:14:13,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-07-19 10:14:13,862 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 10:14:13,862 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 10:14:13,863 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 10:14:13,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 10:14:13,868 INFO L85 PathProgramCache]: Analyzing trace with hash -87958078, now seen corresponding path program 1 times [2022-07-19 10:14:13,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 10:14:13,875 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500470524] [2022-07-19 10:14:13,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 10:14:13,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 10:14:13,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 10:14:13,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 10:14:13,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 10:14:13,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 10:14:13,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 10:14:13,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500470524] [2022-07-19 10:14:13,984 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500470524] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 10:14:13,984 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 10:14:13,984 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-19 10:14:13,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529261771] [2022-07-19 10:14:13,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 10:14:13,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-19 10:14:13,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 10:14:14,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-19 10:14:14,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-19 10:14:14,014 INFO L87 Difference]: Start difference. First operand has 32 states, 24 states have (on average 1.4166666666666667) internal successors, (34), 25 states have internal predecessors, (34), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-19 10:14:14,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 10:14:14,031 INFO L93 Difference]: Finished difference Result 61 states and 82 transitions. [2022-07-19 10:14:14,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-19 10:14:14,033 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2022-07-19 10:14:14,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 10:14:14,039 INFO L225 Difference]: With dead ends: 61 [2022-07-19 10:14:14,039 INFO L226 Difference]: Without dead ends: 28 [2022-07-19 10:14:14,042 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-19 10:14:14,045 INFO L413 NwaCegarLoop]: 36 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, 36 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 [2022-07-19 10:14:14,046 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 10:14:14,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2022-07-19 10:14:14,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2022-07-19 10:14:14,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 21 states have (on average 1.1428571428571428) internal successors, (24), 21 states have internal predecessors, (24), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-07-19 10:14:14,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2022-07-19 10:14:14,091 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 15 [2022-07-19 10:14:14,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 10:14:14,091 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2022-07-19 10:14:14,091 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-19 10:14:14,092 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2022-07-19 10:14:14,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-07-19 10:14:14,093 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 10:14:14,093 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 10:14:14,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-19 10:14:14,094 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 10:14:14,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 10:14:14,095 INFO L85 PathProgramCache]: Analyzing trace with hash 100431803, now seen corresponding path program 1 times [2022-07-19 10:14:14,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 10:14:14,095 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006041894] [2022-07-19 10:14:14,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 10:14:14,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 10:14:14,128 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-19 10:14:14,129 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [576249215] [2022-07-19 10:14:14,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 10:14:14,129 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 10:14:14,130 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 10:14:14,134 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) [2022-07-19 10:14:14,152 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-19 10:14:14,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 10:14:14,240 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-19 10:14:14,245 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 10:14:14,354 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-19 10:14:14,354 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 10:14:14,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 10:14:14,354 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006041894] [2022-07-19 10:14:14,355 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-19 10:14:14,355 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [576249215] [2022-07-19 10:14:14,355 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [576249215] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 10:14:14,355 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 10:14:14,356 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 10:14:14,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504714769] [2022-07-19 10:14:14,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 10:14:14,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 10:14:14,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 10:14:14,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 10:14:14,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 10:14:14,358 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-19 10:14:14,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 10:14:14,394 INFO L93 Difference]: Finished difference Result 35 states and 40 transitions. [2022-07-19 10:14:14,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 10:14:14,395 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 22 [2022-07-19 10:14:14,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 10:14:14,396 INFO L225 Difference]: With dead ends: 35 [2022-07-19 10:14:14,396 INFO L226 Difference]: Without dead ends: 31 [2022-07-19 10:14:14,397 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 10:14:14,398 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 5 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 79 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 [2022-07-19 10:14:14,400 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 79 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 10:14:14,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-07-19 10:14:14,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 29. [2022-07-19 10:14:14,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 22 states have internal predecessors, (25), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-07-19 10:14:14,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2022-07-19 10:14:14,410 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 22 [2022-07-19 10:14:14,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 10:14:14,410 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2022-07-19 10:14:14,411 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-19 10:14:14,411 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2022-07-19 10:14:14,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-07-19 10:14:14,412 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 10:14:14,412 INFO L195 NwaCegarLoop]: trace histogram [2, 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] [2022-07-19 10:14:14,439 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-19 10:14:14,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 10:14:14,634 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 10:14:14,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 10:14:14,635 INFO L85 PathProgramCache]: Analyzing trace with hash -562345857, now seen corresponding path program 1 times [2022-07-19 10:14:14,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 10:14:14,635 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254575190] [2022-07-19 10:14:14,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 10:14:14,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 10:14:14,660 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-19 10:14:14,661 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [18731393] [2022-07-19 10:14:14,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 10:14:14,661 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 10:14:14,661 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 10:14:14,662 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) [2022-07-19 10:14:14,670 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-19 10:14:14,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 10:14:14,738 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-19 10:14:14,741 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 10:14:14,778 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-19 10:14:14,778 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 10:14:14,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 10:14:14,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254575190] [2022-07-19 10:14:14,779 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-19 10:14:14,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [18731393] [2022-07-19 10:14:14,779 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [18731393] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 10:14:14,779 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 10:14:14,779 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 10:14:14,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068177495] [2022-07-19 10:14:14,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 10:14:14,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 10:14:14,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 10:14:14,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 10:14:14,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-19 10:14:14,781 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 3 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-07-19 10:14:14,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 10:14:14,832 INFO L93 Difference]: Finished difference Result 59 states and 68 transitions. [2022-07-19 10:14:14,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-19 10:14:14,832 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 3 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 34 [2022-07-19 10:14:14,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 10:14:14,833 INFO L225 Difference]: With dead ends: 59 [2022-07-19 10:14:14,833 INFO L226 Difference]: Without dead ends: 36 [2022-07-19 10:14:14,834 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-07-19 10:14:14,835 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 11 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 10:14:14,835 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 84 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 10:14:14,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2022-07-19 10:14:14,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 30. [2022-07-19 10:14:14,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 23 states have (on average 1.1304347826086956) internal successors, (26), 23 states have internal predecessors, (26), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-07-19 10:14:14,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2022-07-19 10:14:14,841 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 34 [2022-07-19 10:14:14,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 10:14:14,842 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2022-07-19 10:14:14,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 3 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-07-19 10:14:14,842 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2022-07-19 10:14:14,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-07-19 10:14:14,843 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 10:14:14,843 INFO L195 NwaCegarLoop]: trace histogram [2, 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] [2022-07-19 10:14:14,869 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-19 10:14:15,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-07-19 10:14:15,067 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 10:14:15,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 10:14:15,067 INFO L85 PathProgramCache]: Analyzing trace with hash 1168592577, now seen corresponding path program 1 times [2022-07-19 10:14:15,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 10:14:15,070 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751243678] [2022-07-19 10:14:15,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 10:14:15,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 10:14:15,110 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-19 10:14:15,118 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1121501596] [2022-07-19 10:14:15,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 10:14:15,119 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 10:14:15,119 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 10:14:15,122 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) [2022-07-19 10:14:15,152 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-19 10:14:15,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 10:14:15,238 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 74 conjunts are in the unsatisfiable core [2022-07-19 10:14:15,242 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 10:14:15,287 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 10 treesize of output 8 [2022-07-19 10:14:15,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:14:15,330 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 31 [2022-07-19 10:14:15,335 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 28 [2022-07-19 10:14:15,341 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2022-07-19 10:14:15,346 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2022-07-19 10:14:15,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:14:15,821 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 175 treesize of output 166 [2022-07-19 10:14:15,833 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 162 treesize of output 154 [2022-07-19 10:14:15,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:14:15,844 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:14:15,845 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-19 10:14:15,847 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 130 treesize of output 197 [2022-07-19 10:14:15,859 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-19 10:14:15,861 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 17 [2022-07-19 10:14:16,452 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-19 10:14:16,453 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-19 10:14:16,454 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 17 [2022-07-19 10:14:16,674 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 10:14:16,674 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 10:14:27,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 10:14:27,728 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751243678] [2022-07-19 10:14:27,729 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-19 10:14:27,729 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1121501596] [2022-07-19 10:14:27,729 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1121501596] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 10:14:27,729 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-19 10:14:27,729 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2022-07-19 10:14:27,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183783482] [2022-07-19 10:14:27,729 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-19 10:14:27,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-07-19 10:14:27,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 10:14:27,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-07-19 10:14:27,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=747, Unknown=3, NotChecked=0, Total=870 [2022-07-19 10:14:27,731 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand has 21 states, 19 states have (on average 1.4736842105263157) internal successors, (28), 16 states have internal predecessors, (28), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-07-19 10:14:28,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 10:14:28,158 INFO L93 Difference]: Finished difference Result 57 states and 65 transitions. [2022-07-19 10:14:28,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-07-19 10:14:28,159 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 19 states have (on average 1.4736842105263157) internal successors, (28), 16 states have internal predecessors, (28), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 36 [2022-07-19 10:14:28,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 10:14:28,161 INFO L225 Difference]: With dead ends: 57 [2022-07-19 10:14:28,161 INFO L226 Difference]: Without dead ends: 53 [2022-07-19 10:14:28,162 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 24 SyntacticMatches, 3 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 315 ImplicationChecksByTransitivity, 11.5s TimeCoverageRelationStatistics Valid=128, Invalid=799, Unknown=3, NotChecked=0, Total=930 [2022-07-19 10:14:28,162 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 22 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 224 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 101 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 10:14:28,163 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 224 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 50 Invalid, 0 Unknown, 101 Unchecked, 0.1s Time] [2022-07-19 10:14:28,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2022-07-19 10:14:28,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 50. [2022-07-19 10:14:28,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 38 states have (on average 1.131578947368421) internal successors, (43), 38 states have internal predecessors, (43), 7 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-07-19 10:14:28,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 57 transitions. [2022-07-19 10:14:28,174 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 57 transitions. Word has length 36 [2022-07-19 10:14:28,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 10:14:28,175 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 57 transitions. [2022-07-19 10:14:28,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 19 states have (on average 1.4736842105263157) internal successors, (28), 16 states have internal predecessors, (28), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-07-19 10:14:28,175 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 57 transitions. [2022-07-19 10:14:28,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-07-19 10:14:28,177 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 10:14:28,177 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 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] [2022-07-19 10:14:28,204 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-19 10:14:28,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 10:14:28,400 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 10:14:28,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 10:14:28,401 INFO L85 PathProgramCache]: Analyzing trace with hash -1846883197, now seen corresponding path program 2 times [2022-07-19 10:14:28,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 10:14:28,401 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192688707] [2022-07-19 10:14:28,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 10:14:28,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 10:14:28,444 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-19 10:14:28,444 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [524549903] [2022-07-19 10:14:28,444 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-19 10:14:28,444 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 10:14:28,445 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 10:14:28,446 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) [2022-07-19 10:14:28,454 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-19 10:14:28,541 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-19 10:14:28,541 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-19 10:14:28,542 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-19 10:14:28,544 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 10:14:28,618 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-19 10:14:28,619 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 10:14:28,676 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-07-19 10:14:28,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 10:14:28,677 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192688707] [2022-07-19 10:14:28,677 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-19 10:14:28,677 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [524549903] [2022-07-19 10:14:28,677 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [524549903] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 10:14:28,677 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-19 10:14:28,677 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2022-07-19 10:14:28,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178961227] [2022-07-19 10:14:28,678 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-19 10:14:28,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-19 10:14:28,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 10:14:28,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-19 10:14:28,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-07-19 10:14:28,680 INFO L87 Difference]: Start difference. First operand 50 states and 57 transitions. Second operand has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 4 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2022-07-19 10:14:28,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 10:14:28,897 INFO L93 Difference]: Finished difference Result 89 states and 102 transitions. [2022-07-19 10:14:28,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-19 10:14:28,898 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 4 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) Word has length 38 [2022-07-19 10:14:28,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 10:14:28,899 INFO L225 Difference]: With dead ends: 89 [2022-07-19 10:14:28,899 INFO L226 Difference]: Without dead ends: 85 [2022-07-19 10:14:28,900 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2022-07-19 10:14:28,900 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 58 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-19 10:14:28,901 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 112 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-19 10:14:28,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2022-07-19 10:14:28,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 70. [2022-07-19 10:14:28,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 51 states have (on average 1.1176470588235294) internal successors, (57), 53 states have internal predecessors, (57), 12 states have call successors, (12), 6 states have call predecessors, (12), 6 states have return successors, (12), 10 states have call predecessors, (12), 12 states have call successors, (12) [2022-07-19 10:14:28,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 81 transitions. [2022-07-19 10:14:28,913 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 81 transitions. Word has length 38 [2022-07-19 10:14:28,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 10:14:28,914 INFO L495 AbstractCegarLoop]: Abstraction has 70 states and 81 transitions. [2022-07-19 10:14:28,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 4 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2022-07-19 10:14:28,914 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 81 transitions. [2022-07-19 10:14:28,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-07-19 10:14:28,917 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 10:14:28,918 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 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] [2022-07-19 10:14:28,947 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-19 10:14:29,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 10:14:29,143 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 10:14:29,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 10:14:29,144 INFO L85 PathProgramCache]: Analyzing trace with hash 383375294, now seen corresponding path program 1 times [2022-07-19 10:14:29,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 10:14:29,144 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299560439] [2022-07-19 10:14:29,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 10:14:29,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 10:14:29,168 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-19 10:14:29,171 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [145637604] [2022-07-19 10:14:29,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 10:14:29,171 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 10:14:29,171 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 10:14:29,173 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) [2022-07-19 10:14:29,174 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-19 10:14:29,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 10:14:29,312 INFO L263 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 87 conjunts are in the unsatisfiable core [2022-07-19 10:14:29,316 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 10:14:29,327 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 10 treesize of output 8 [2022-07-19 10:14:29,358 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:14:29,361 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 31 [2022-07-19 10:14:29,366 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 28 [2022-07-19 10:14:29,373 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2022-07-19 10:14:29,378 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2022-07-19 10:14:29,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:14:29,710 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 179 treesize of output 170 [2022-07-19 10:14:29,719 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 170 treesize of output 162 [2022-07-19 10:14:29,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:14:29,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:14:29,732 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-19 10:14:29,733 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 134 treesize of output 201 [2022-07-19 10:14:29,744 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-19 10:14:29,745 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 21 [2022-07-19 10:14:29,778 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-07-19 10:14:30,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:14:30,227 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 175 treesize of output 166 [2022-07-19 10:14:30,236 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 162 treesize of output 154 [2022-07-19 10:14:30,244 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:14:30,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:14:30,246 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-19 10:14:30,249 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 130 treesize of output 197 [2022-07-19 10:14:30,257 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-19 10:14:30,261 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 17 [2022-07-19 10:14:30,303 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:14:30,306 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 147 treesize of output 42 [2022-07-19 10:14:30,824 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-19 10:14:30,826 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-19 10:14:30,826 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 20 [2022-07-19 10:14:31,042 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 14 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-19 10:14:31,042 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 10:14:45,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 10:14:45,579 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299560439] [2022-07-19 10:14:45,579 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-19 10:14:45,579 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [145637604] [2022-07-19 10:14:45,579 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [145637604] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 10:14:45,579 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-19 10:14:45,579 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2022-07-19 10:14:45,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795163795] [2022-07-19 10:14:45,579 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-19 10:14:45,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-07-19 10:14:45,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 10:14:45,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-07-19 10:14:45,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=965, Unknown=8, NotChecked=0, Total=1122 [2022-07-19 10:14:45,581 INFO L87 Difference]: Start difference. First operand 70 states and 81 transitions. Second operand has 25 states, 23 states have (on average 1.4782608695652173) internal successors, (34), 19 states have internal predecessors, (34), 5 states have call successors, (5), 4 states have call predecessors, (5), 5 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2022-07-19 10:14:46,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 10:14:46,194 INFO L93 Difference]: Finished difference Result 87 states and 96 transitions. [2022-07-19 10:14:46,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-07-19 10:14:46,195 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 23 states have (on average 1.4782608695652173) internal successors, (34), 19 states have internal predecessors, (34), 5 states have call successors, (5), 4 states have call predecessors, (5), 5 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) Word has length 44 [2022-07-19 10:14:46,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 10:14:46,196 INFO L225 Difference]: With dead ends: 87 [2022-07-19 10:14:46,196 INFO L226 Difference]: Without dead ends: 83 [2022-07-19 10:14:46,197 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 27 SyntacticMatches, 4 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 488 ImplicationChecksByTransitivity, 15.4s TimeCoverageRelationStatistics Valid=169, Invalid=1083, Unknown=8, NotChecked=0, Total=1260 [2022-07-19 10:14:46,198 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 18 mSDsluCounter, 286 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 314 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 128 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 10:14:46,198 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 314 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 45 Invalid, 0 Unknown, 128 Unchecked, 0.1s Time] [2022-07-19 10:14:46,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2022-07-19 10:14:46,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 61. [2022-07-19 10:14:46,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 45 states have (on average 1.1111111111111112) internal successors, (50), 46 states have internal predecessors, (50), 9 states have call successors, (9), 6 states have call predecessors, (9), 6 states have return successors, (9), 8 states have call predecessors, (9), 9 states have call successors, (9) [2022-07-19 10:14:46,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 68 transitions. [2022-07-19 10:14:46,208 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 68 transitions. Word has length 44 [2022-07-19 10:14:46,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 10:14:46,208 INFO L495 AbstractCegarLoop]: Abstraction has 61 states and 68 transitions. [2022-07-19 10:14:46,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 23 states have (on average 1.4782608695652173) internal successors, (34), 19 states have internal predecessors, (34), 5 states have call successors, (5), 4 states have call predecessors, (5), 5 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2022-07-19 10:14:46,208 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 68 transitions. [2022-07-19 10:14:46,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-07-19 10:14:46,209 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 10:14:46,209 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 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, 1] [2022-07-19 10:14:46,226 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-07-19 10:14:46,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 10:14:46,412 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 10:14:46,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 10:14:46,412 INFO L85 PathProgramCache]: Analyzing trace with hash -1867659643, now seen corresponding path program 3 times [2022-07-19 10:14:46,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 10:14:46,412 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38732111] [2022-07-19 10:14:46,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 10:14:46,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 10:14:46,433 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-19 10:14:46,434 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [278766711] [2022-07-19 10:14:46,434 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-19 10:14:46,439 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 10:14:46,440 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 10:14:46,441 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) [2022-07-19 10:14:46,443 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-19 10:14:46,545 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-07-19 10:14:46,546 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-19 10:14:46,547 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-19 10:14:46,549 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 10:14:46,657 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 24 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-19 10:14:46,657 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 10:14:46,716 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-07-19 10:14:46,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 10:14:46,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38732111] [2022-07-19 10:14:46,717 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-19 10:14:46,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [278766711] [2022-07-19 10:14:46,717 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [278766711] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 10:14:46,717 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-19 10:14:46,717 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2022-07-19 10:14:46,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686181492] [2022-07-19 10:14:46,718 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-19 10:14:46,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-19 10:14:46,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 10:14:46,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-19 10:14:46,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-07-19 10:14:46,719 INFO L87 Difference]: Start difference. First operand 61 states and 68 transitions. Second operand has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 9 states have internal predecessors, (40), 5 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 5 states have call predecessors, (11), 5 states have call successors, (11) [2022-07-19 10:14:46,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 10:14:46,883 INFO L93 Difference]: Finished difference Result 83 states and 93 transitions. [2022-07-19 10:14:46,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-19 10:14:46,883 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 9 states have internal predecessors, (40), 5 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 5 states have call predecessors, (11), 5 states have call successors, (11) Word has length 48 [2022-07-19 10:14:46,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 10:14:46,884 INFO L225 Difference]: With dead ends: 83 [2022-07-19 10:14:46,884 INFO L226 Difference]: Without dead ends: 48 [2022-07-19 10:14:46,885 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2022-07-19 10:14:46,885 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 40 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 10:14:46,886 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 117 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 10:14:46,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2022-07-19 10:14:46,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 42. [2022-07-19 10:14:46,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 32 states have (on average 1.09375) internal successors, (35), 32 states have internal predecessors, (35), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-07-19 10:14:46,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 47 transitions. [2022-07-19 10:14:46,892 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 47 transitions. Word has length 48 [2022-07-19 10:14:46,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 10:14:46,892 INFO L495 AbstractCegarLoop]: Abstraction has 42 states and 47 transitions. [2022-07-19 10:14:46,892 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 9 states have internal predecessors, (40), 5 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 5 states have call predecessors, (11), 5 states have call successors, (11) [2022-07-19 10:14:46,892 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 47 transitions. [2022-07-19 10:14:46,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-07-19 10:14:46,893 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 10:14:46,893 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-19 10:14:46,922 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-19 10:14:47,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 10:14:47,119 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 10:14:47,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 10:14:47,120 INFO L85 PathProgramCache]: Analyzing trace with hash 1239986503, now seen corresponding path program 4 times [2022-07-19 10:14:47,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 10:14:47,120 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520873208] [2022-07-19 10:14:47,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 10:14:47,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 10:14:47,147 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-19 10:14:47,147 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [549569177] [2022-07-19 10:14:47,147 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-07-19 10:14:47,148 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 10:14:47,148 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 10:14:47,150 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) [2022-07-19 10:14:47,166 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-19 10:14:47,525 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-07-19 10:14:47,525 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-19 10:14:47,527 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 106 conjunts are in the unsatisfiable core [2022-07-19 10:14:47,531 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 10:14:47,554 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 10 treesize of output 8 [2022-07-19 10:14:47,575 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:14:47,578 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 31 [2022-07-19 10:14:47,584 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2022-07-19 10:14:47,589 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 27 treesize of output 26 [2022-07-19 10:14:47,718 INFO L356 Elim1Store]: treesize reduction 48, result has 23.8 percent of original size [2022-07-19 10:14:47,718 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 54 treesize of output 43 [2022-07-19 10:14:48,333 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:14:48,337 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 193 treesize of output 180 [2022-07-19 10:14:48,348 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 171 treesize of output 161 [2022-07-19 10:14:48,441 INFO L356 Elim1Store]: treesize reduction 451, result has 6.8 percent of original size [2022-07-19 10:14:48,443 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 12 case distinctions, treesize of input 137 treesize of output 199 [2022-07-19 10:14:48,552 INFO L356 Elim1Store]: treesize reduction 85, result has 23.4 percent of original size [2022-07-19 10:14:48,553 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 33 treesize of output 45 [2022-07-19 10:16:20,447 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 428 treesize of output 374 [2022-07-19 10:16:20,673 INFO L356 Elim1Store]: treesize reduction 68, result has 39.3 percent of original size [2022-07-19 10:16:20,674 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 1789 treesize of output 1374 [2022-07-19 10:16:20,801 INFO L356 Elim1Store]: treesize reduction 16, result has 56.8 percent of original size [2022-07-19 10:16:20,801 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 312 treesize of output 300 [2022-07-19 10:16:23,797 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 6 proven. 21 refuted. 4 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-19 10:16:23,798 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 10:17:01,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 10:17:01,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520873208] [2022-07-19 10:17:01,174 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-19 10:17:01,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [549569177] [2022-07-19 10:17:01,174 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [549569177] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 10:17:01,174 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-19 10:17:01,174 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2022-07-19 10:17:01,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411918162] [2022-07-19 10:17:01,175 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-19 10:17:01,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-07-19 10:17:01,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 10:17:01,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-07-19 10:17:01,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=213, Invalid=1921, Unknown=28, NotChecked=0, Total=2162 [2022-07-19 10:17:01,177 INFO L87 Difference]: Start difference. First operand 42 states and 47 transitions. Second operand has 32 states, 28 states have (on average 1.2857142857142858) internal successors, (36), 24 states have internal predecessors, (36), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-07-19 10:17:15,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 10:17:15,577 INFO L93 Difference]: Finished difference Result 89 states and 100 transitions. [2022-07-19 10:17:15,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-07-19 10:17:15,577 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 28 states have (on average 1.2857142857142858) internal successors, (36), 24 states have internal predecessors, (36), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 50 [2022-07-19 10:17:15,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 10:17:15,578 INFO L225 Difference]: With dead ends: 89 [2022-07-19 10:17:15,579 INFO L226 Difference]: Without dead ends: 85 [2022-07-19 10:17:15,579 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 32 SyntacticMatches, 6 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1219 ImplicationChecksByTransitivity, 120.8s TimeCoverageRelationStatistics Valid=272, Invalid=2348, Unknown=32, NotChecked=0, Total=2652 [2022-07-19 10:17:15,580 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 30 mSDsluCounter, 289 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 316 SdHoareTripleChecker+Invalid, 350 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 235 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-19 10:17:15,580 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 316 Invalid, 350 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 105 Invalid, 0 Unknown, 235 Unchecked, 0.3s Time] [2022-07-19 10:17:15,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2022-07-19 10:17:15,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 67. [2022-07-19 10:17:15,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 50 states have (on average 1.1) internal successors, (55), 51 states have internal predecessors, (55), 10 states have call successors, (10), 6 states have call predecessors, (10), 6 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2022-07-19 10:17:15,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 75 transitions. [2022-07-19 10:17:15,592 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 75 transitions. Word has length 50 [2022-07-19 10:17:15,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 10:17:15,592 INFO L495 AbstractCegarLoop]: Abstraction has 67 states and 75 transitions. [2022-07-19 10:17:15,592 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 28 states have (on average 1.2857142857142858) internal successors, (36), 24 states have internal predecessors, (36), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-07-19 10:17:15,592 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 75 transitions. [2022-07-19 10:17:15,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-07-19 10:17:15,593 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 10:17:15,593 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 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] [2022-07-19 10:17:15,611 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-07-19 10:17:15,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 10:17:15,800 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 10:17:15,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 10:17:15,800 INFO L85 PathProgramCache]: Analyzing trace with hash -1609305207, now seen corresponding path program 5 times [2022-07-19 10:17:15,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 10:17:15,800 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941944522] [2022-07-19 10:17:15,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 10:17:15,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 10:17:15,818 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-19 10:17:15,818 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [499491429] [2022-07-19 10:17:15,818 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-07-19 10:17:15,818 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 10:17:15,819 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 10:17:15,820 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) [2022-07-19 10:17:15,853 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-07-19 10:17:15,928 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-07-19 10:17:15,929 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-19 10:17:15,930 INFO L263 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-19 10:17:15,932 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 10:17:16,269 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 8 proven. 13 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-19 10:17:16,269 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 10:17:16,450 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 4 proven. 13 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-07-19 10:17:16,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 10:17:16,450 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941944522] [2022-07-19 10:17:16,450 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-19 10:17:16,451 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [499491429] [2022-07-19 10:17:16,451 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [499491429] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 10:17:16,451 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-19 10:17:16,451 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2022-07-19 10:17:16,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60856952] [2022-07-19 10:17:16,451 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-19 10:17:16,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-19 10:17:16,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 10:17:16,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-19 10:17:16,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2022-07-19 10:17:16,453 INFO L87 Difference]: Start difference. First operand 67 states and 75 transitions. Second operand has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 12 states have internal predecessors, (46), 6 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 6 states have call predecessors, (11), 6 states have call successors, (11) [2022-07-19 10:17:17,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 10:17:17,259 INFO L93 Difference]: Finished difference Result 116 states and 133 transitions. [2022-07-19 10:17:17,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-19 10:17:17,260 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 12 states have internal predecessors, (46), 6 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 6 states have call predecessors, (11), 6 states have call successors, (11) Word has length 52 [2022-07-19 10:17:17,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 10:17:17,261 INFO L225 Difference]: With dead ends: 116 [2022-07-19 10:17:17,261 INFO L226 Difference]: Without dead ends: 112 [2022-07-19 10:17:17,262 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2022-07-19 10:17:17,262 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 51 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 190 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-19 10:17:17,262 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 190 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 203 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-19 10:17:17,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2022-07-19 10:17:17,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 97. [2022-07-19 10:17:17,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 70 states have (on average 1.0857142857142856) internal successors, (76), 72 states have internal predecessors, (76), 18 states have call successors, (18), 8 states have call predecessors, (18), 8 states have return successors, (18), 16 states have call predecessors, (18), 18 states have call successors, (18) [2022-07-19 10:17:17,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 112 transitions. [2022-07-19 10:17:17,279 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 112 transitions. Word has length 52 [2022-07-19 10:17:17,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 10:17:17,280 INFO L495 AbstractCegarLoop]: Abstraction has 97 states and 112 transitions. [2022-07-19 10:17:17,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 12 states have internal predecessors, (46), 6 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 6 states have call predecessors, (11), 6 states have call successors, (11) [2022-07-19 10:17:17,280 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 112 transitions. [2022-07-19 10:17:17,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-07-19 10:17:17,281 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 10:17:17,281 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 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] [2022-07-19 10:17:17,314 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-07-19 10:17:17,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-07-19 10:17:17,500 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 10:17:17,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 10:17:17,500 INFO L85 PathProgramCache]: Analyzing trace with hash 1113507012, now seen corresponding path program 2 times [2022-07-19 10:17:17,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 10:17:17,500 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421663234] [2022-07-19 10:17:17,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 10:17:17,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 10:17:17,521 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-19 10:17:17,521 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1776226193] [2022-07-19 10:17:17,521 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-19 10:17:17,522 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 10:17:17,522 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 10:17:17,525 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) [2022-07-19 10:17:17,529 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-07-19 10:17:18,264 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-19 10:17:18,264 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-19 10:17:18,267 WARN L261 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 136 conjunts are in the unsatisfiable core [2022-07-19 10:17:18,271 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 10:17:18,341 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 10 treesize of output 8 [2022-07-19 10:17:18,423 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:17:18,427 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 31 [2022-07-19 10:17:18,437 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 28 [2022-07-19 10:17:18,449 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2022-07-19 10:17:18,461 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2022-07-19 10:17:18,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:17:18,696 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:17:18,697 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 0 case distinctions, treesize of input 64 treesize of output 53 [2022-07-19 10:17:19,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:17:19,962 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:17:19,964 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:17:19,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:17:19,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:17:19,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:17:20,096 INFO L356 Elim1Store]: treesize reduction 123, result has 17.4 percent of original size [2022-07-19 10:17:20,096 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 6 disjoint index pairs (out of 21 index pairs), introduced 8 new quantified variables, introduced 6 case distinctions, treesize of input 249 treesize of output 215 [2022-07-19 10:17:20,108 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 194 treesize of output 180 [2022-07-19 10:17:20,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:17:20,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:17:20,127 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:17:20,129 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:17:20,156 INFO L356 Elim1Store]: treesize reduction 130, result has 0.8 percent of original size [2022-07-19 10:17:20,156 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 4 case distinctions, treesize of input 141 treesize of output 216 [2022-07-19 10:17:20,175 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-07-19 10:17:24,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:17:24,126 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 502 treesize of output 425 [2022-07-19 10:17:24,300 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 439 treesize of output 409 [2022-07-19 10:17:24,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:17:24,937 INFO L356 Elim1Store]: treesize reduction 122, result has 32.2 percent of original size [2022-07-19 10:17:24,938 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 414 treesize of output 448 [2022-07-19 10:17:24,957 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:17:24,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:17:24,968 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-19 10:17:24,971 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:17:24,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:17:24,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:17:24,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:17:25,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:17:25,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:17:25,024 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:17:25,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:17:25,029 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:17:25,030 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-19 10:17:25,080 INFO L356 Elim1Store]: treesize reduction 333, result has 0.3 percent of original size [2022-07-19 10:17:25,081 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 6 select indices, 6 select index equivalence classes, 5 disjoint index pairs (out of 15 index pairs), introduced 7 new quantified variables, introduced 11 case distinctions, treesize of input 281 treesize of output 340 [2022-07-19 10:17:25,751 WARN L234 Elim1Store]: Array PQE input equivalent to false