./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loop-crafted/simple_array_index_value_1-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b5317dae Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/loop-crafted/simple_array_index_value_1-1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 455c8355a70d1790a36f88862e376be10c9f4a7e771f908daaa372028f23f8c4 --- Real Ultimate output --- This is Ultimate 0.2.2-?-b5317da-m [2023-02-16 01:22:08,413 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-16 01:22:08,414 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-16 01:22:08,441 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-16 01:22:08,442 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-16 01:22:08,444 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-16 01:22:08,445 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-16 01:22:08,447 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-16 01:22:08,448 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-16 01:22:08,450 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-16 01:22:08,451 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-16 01:22:08,453 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-16 01:22:08,453 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-16 01:22:08,457 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-16 01:22:08,458 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-16 01:22:08,459 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-16 01:22:08,460 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-16 01:22:08,461 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-16 01:22:08,462 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-16 01:22:08,463 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-16 01:22:08,464 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-16 01:22:08,464 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-16 01:22:08,465 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-16 01:22:08,466 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-16 01:22:08,467 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-16 01:22:08,469 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-16 01:22:08,469 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-16 01:22:08,469 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-16 01:22:08,470 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-16 01:22:08,471 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-16 01:22:08,472 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-16 01:22:08,472 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-16 01:22:08,473 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-16 01:22:08,474 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-16 01:22:08,475 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-16 01:22:08,475 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-16 01:22:08,475 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-16 01:22:08,476 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-16 01:22:08,476 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-16 01:22:08,477 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-16 01:22:08,478 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-16 01:22:08,490 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-02-16 01:22:08,525 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-16 01:22:08,525 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-16 01:22:08,525 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-16 01:22:08,525 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-16 01:22:08,525 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-16 01:22:08,526 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-16 01:22:08,526 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-16 01:22:08,526 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-16 01:22:08,526 INFO L138 SettingsManager]: * Use SBE=true [2023-02-16 01:22:08,526 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-16 01:22:08,526 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-16 01:22:08,526 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-16 01:22:08,526 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-16 01:22:08,527 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-16 01:22:08,528 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-16 01:22:08,528 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-16 01:22:08,528 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-16 01:22:08,528 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-16 01:22:08,528 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-16 01:22:08,528 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-16 01:22:08,528 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-16 01:22:08,529 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-16 01:22:08,529 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-16 01:22:08,529 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-16 01:22:08,529 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-16 01:22:08,529 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-16 01:22:08,530 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-16 01:22:08,530 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-16 01:22:08,530 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-16 01:22:08,530 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-16 01:22:08,530 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-16 01:22:08,531 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-16 01:22:08,531 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-16 01:22:08,531 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-16 01:22:08,531 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-16 01:22:08,531 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 455c8355a70d1790a36f88862e376be10c9f4a7e771f908daaa372028f23f8c4 [2023-02-16 01:22:08,741 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-16 01:22:08,775 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-16 01:22:08,777 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-16 01:22:08,778 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-16 01:22:08,778 INFO L275 PluginConnector]: CDTParser initialized [2023-02-16 01:22:08,779 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-crafted/simple_array_index_value_1-1.i [2023-02-16 01:22:09,680 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-16 01:22:09,819 INFO L351 CDTParser]: Found 1 translation units. [2023-02-16 01:22:09,819 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-crafted/simple_array_index_value_1-1.i [2023-02-16 01:22:09,823 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ec117ea97/9d33f0e5ab9a41138573c97f81a5bac7/FLAG636df7cd9 [2023-02-16 01:22:09,832 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ec117ea97/9d33f0e5ab9a41138573c97f81a5bac7 [2023-02-16 01:22:09,834 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-16 01:22:09,835 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-16 01:22:09,837 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-16 01:22:09,837 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-16 01:22:09,839 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-16 01:22:09,839 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.02 01:22:09" (1/1) ... [2023-02-16 01:22:09,840 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39282849 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 01:22:09, skipping insertion in model container [2023-02-16 01:22:09,840 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.02 01:22:09" (1/1) ... [2023-02-16 01:22:09,845 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-16 01:22:09,854 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-16 01:22:09,936 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-crafted/simple_array_index_value_1-1.i[834,847] [2023-02-16 01:22:09,947 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-16 01:22:09,952 INFO L203 MainTranslator]: Completed pre-run [2023-02-16 01:22:09,960 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-crafted/simple_array_index_value_1-1.i[834,847] [2023-02-16 01:22:09,966 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-16 01:22:09,974 INFO L208 MainTranslator]: Completed translation [2023-02-16 01:22:09,974 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 01:22:09 WrapperNode [2023-02-16 01:22:09,974 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-16 01:22:09,975 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-16 01:22:09,975 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-16 01:22:09,975 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-16 01:22:09,979 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 01:22:09" (1/1) ... [2023-02-16 01:22:09,984 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 01:22:09" (1/1) ... [2023-02-16 01:22:09,994 INFO L138 Inliner]: procedures = 15, calls = 13, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 37 [2023-02-16 01:22:09,994 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-16 01:22:09,995 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-16 01:22:09,995 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-16 01:22:09,995 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-16 01:22:10,000 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 01:22:09" (1/1) ... [2023-02-16 01:22:10,000 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 01:22:09" (1/1) ... [2023-02-16 01:22:10,001 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 01:22:09" (1/1) ... [2023-02-16 01:22:10,001 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 01:22:09" (1/1) ... [2023-02-16 01:22:10,004 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 01:22:09" (1/1) ... [2023-02-16 01:22:10,006 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 01:22:09" (1/1) ... [2023-02-16 01:22:10,007 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 01:22:09" (1/1) ... [2023-02-16 01:22:10,008 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 01:22:09" (1/1) ... [2023-02-16 01:22:10,010 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-16 01:22:10,010 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-16 01:22:10,011 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-16 01:22:10,011 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-16 01:22:10,011 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 01:22:09" (1/1) ... [2023-02-16 01:22:10,015 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-16 01:22:10,024 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 01:22:10,042 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-02-16 01:22:10,043 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-02-16 01:22:10,065 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-16 01:22:10,065 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-16 01:22:10,065 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-02-16 01:22:10,065 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-02-16 01:22:10,065 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-16 01:22:10,066 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-16 01:22:10,066 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-02-16 01:22:10,066 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-02-16 01:22:10,066 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-02-16 01:22:10,066 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-02-16 01:22:10,109 INFO L235 CfgBuilder]: Building ICFG [2023-02-16 01:22:10,110 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-16 01:22:10,207 INFO L276 CfgBuilder]: Performing block encoding [2023-02-16 01:22:10,211 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-16 01:22:10,211 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2023-02-16 01:22:10,229 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.02 01:22:10 BoogieIcfgContainer [2023-02-16 01:22:10,229 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-16 01:22:10,231 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-16 01:22:10,231 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-16 01:22:10,233 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-16 01:22:10,233 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.02 01:22:09" (1/3) ... [2023-02-16 01:22:10,234 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c989ee5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.02 01:22:10, skipping insertion in model container [2023-02-16 01:22:10,234 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 01:22:09" (2/3) ... [2023-02-16 01:22:10,234 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c989ee5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.02 01:22:10, skipping insertion in model container [2023-02-16 01:22:10,234 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.02 01:22:10" (3/3) ... [2023-02-16 01:22:10,235 INFO L112 eAbstractionObserver]: Analyzing ICFG simple_array_index_value_1-1.i [2023-02-16 01:22:10,261 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-16 01:22:10,262 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-02-16 01:22:10,307 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-16 01:22:10,311 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@4cf178c5, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-16 01:22:10,311 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-02-16 01:22:10,314 INFO L276 IsEmpty]: Start isEmpty. Operand has 22 states, 17 states have (on average 1.411764705882353) internal successors, (24), 18 states have internal predecessors, (24), 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) [2023-02-16 01:22:10,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-02-16 01:22:10,318 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 01:22:10,319 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 01:22:10,319 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 01:22:10,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 01:22:10,323 INFO L85 PathProgramCache]: Analyzing trace with hash 1969531013, now seen corresponding path program 1 times [2023-02-16 01:22:10,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 01:22:10,329 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656207943] [2023-02-16 01:22:10,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 01:22:10,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 01:22:10,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:22:10,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 01:22:10,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 01:22:10,530 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656207943] [2023-02-16 01:22:10,531 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1656207943] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 01:22:10,531 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 01:22:10,531 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-16 01:22:10,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461107314] [2023-02-16 01:22:10,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 01:22:10,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-16 01:22:10,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 01:22:10,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-16 01:22:10,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-16 01:22:10,572 INFO L87 Difference]: Start difference. First operand has 22 states, 17 states have (on average 1.411764705882353) internal successors, (24), 18 states have internal predecessors, (24), 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) Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 01:22:10,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 01:22:10,607 INFO L93 Difference]: Finished difference Result 47 states and 66 transitions. [2023-02-16 01:22:10,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-16 01:22:10,609 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2023-02-16 01:22:10,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 01:22:10,622 INFO L225 Difference]: With dead ends: 47 [2023-02-16 01:22:10,622 INFO L226 Difference]: Without dead ends: 25 [2023-02-16 01:22:10,625 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-16 01:22:10,634 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 4 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-16 01:22:10,634 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 36 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-16 01:22:10,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2023-02-16 01:22:10,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 21. [2023-02-16 01:22:10,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 states have internal predecessors, (20), 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) [2023-02-16 01:22:10,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 24 transitions. [2023-02-16 01:22:10,659 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 24 transitions. Word has length 10 [2023-02-16 01:22:10,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 01:22:10,660 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 24 transitions. [2023-02-16 01:22:10,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 01:22:10,660 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 24 transitions. [2023-02-16 01:22:10,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-02-16 01:22:10,661 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 01:22:10,661 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 01:22:10,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-02-16 01:22:10,662 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 01:22:10,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 01:22:10,663 INFO L85 PathProgramCache]: Analyzing trace with hash 1314333447, now seen corresponding path program 1 times [2023-02-16 01:22:10,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 01:22:10,664 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846971200] [2023-02-16 01:22:10,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 01:22:10,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 01:22:10,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:22:10,796 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 01:22:10,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 01:22:10,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846971200] [2023-02-16 01:22:10,797 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [846971200] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 01:22:10,797 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1153558384] [2023-02-16 01:22:10,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 01:22:10,799 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 01:22:10,799 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 01:22:10,803 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-16 01:22:10,804 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-16 01:22:10,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:22:10,863 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 19 conjunts are in the unsatisfiable core [2023-02-16 01:22:10,868 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 01:22:10,909 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-02-16 01:22:10,955 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-02-16 01:22:11,002 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 01:22:11,002 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 01:22:11,253 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 45 [2023-02-16 01:22:11,262 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-16 01:22:11,262 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 45 treesize of output 92 [2023-02-16 01:22:11,306 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-16 01:22:11,308 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 59 treesize of output 46 [2023-02-16 01:22:11,361 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 01:22:11,362 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1153558384] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 01:22:11,362 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-16 01:22:11,362 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 8, 9] total 16 [2023-02-16 01:22:11,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92987394] [2023-02-16 01:22:11,363 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-16 01:22:11,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-02-16 01:22:11,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 01:22:11,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-02-16 01:22:11,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2023-02-16 01:22:11,364 INFO L87 Difference]: Start difference. First operand 21 states and 24 transitions. Second operand has 16 states, 14 states have (on average 2.0) internal successors, (28), 14 states have internal predecessors, (28), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 01:22:11,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 01:22:11,604 INFO L93 Difference]: Finished difference Result 53 states and 62 transitions. [2023-02-16 01:22:11,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-02-16 01:22:11,604 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 2.0) internal successors, (28), 14 states have internal predecessors, (28), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2023-02-16 01:22:11,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 01:22:11,605 INFO L225 Difference]: With dead ends: 53 [2023-02-16 01:22:11,605 INFO L226 Difference]: Without dead ends: 37 [2023-02-16 01:22:11,606 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=87, Invalid=333, Unknown=0, NotChecked=0, Total=420 [2023-02-16 01:22:11,607 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 52 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-16 01:22:11,607 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 108 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-16 01:22:11,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2023-02-16 01:22:11,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 32. [2023-02-16 01:22:11,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 26 states have (on average 1.1538461538461537) internal successors, (30), 26 states have internal predecessors, (30), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-02-16 01:22:11,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2023-02-16 01:22:11,613 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 12 [2023-02-16 01:22:11,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 01:22:11,614 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2023-02-16 01:22:11,614 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 2.0) internal successors, (28), 14 states have internal predecessors, (28), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 01:22:11,614 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2023-02-16 01:22:11,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-02-16 01:22:11,615 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 01:22:11,615 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 01:22:11,620 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-02-16 01:22:11,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 01:22:11,820 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 01:22:11,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 01:22:11,820 INFO L85 PathProgramCache]: Analyzing trace with hash 1546622032, now seen corresponding path program 1 times [2023-02-16 01:22:11,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 01:22:11,821 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085613461] [2023-02-16 01:22:11,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 01:22:11,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 01:22:11,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:22:11,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-02-16 01:22:11,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:22:11,941 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-16 01:22:11,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 01:22:11,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085613461] [2023-02-16 01:22:11,942 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2085613461] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 01:22:11,943 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2142305203] [2023-02-16 01:22:11,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 01:22:11,943 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 01:22:11,943 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 01:22:11,944 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-16 01:22:11,947 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-02-16 01:22:11,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:22:11,983 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 23 conjunts are in the unsatisfiable core [2023-02-16 01:22:11,984 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 01:22:12,017 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 49 [2023-02-16 01:22:12,023 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 91 [2023-02-16 01:22:12,054 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-02-16 01:22:12,667 INFO L321 Elim1Store]: treesize reduction 13, result has 18.8 percent of original size [2023-02-16 01:22:12,667 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 14 [2023-02-16 01:22:12,744 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 01:22:12,745 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 01:22:13,013 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 45 [2023-02-16 01:22:13,021 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-16 01:22:13,022 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 45 treesize of output 92 [2023-02-16 01:22:13,042 INFO L321 Elim1Store]: treesize reduction 5, result has 58.3 percent of original size [2023-02-16 01:22:13,043 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 20 [2023-02-16 01:22:13,096 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 01:22:13,097 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2142305203] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 01:22:13,097 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-16 01:22:13,097 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 11, 11] total 21 [2023-02-16 01:22:13,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265496887] [2023-02-16 01:22:13,097 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-16 01:22:13,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-02-16 01:22:13,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 01:22:13,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-02-16 01:22:13,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=349, Unknown=0, NotChecked=0, Total=420 [2023-02-16 01:22:13,099 INFO L87 Difference]: Start difference. First operand 32 states and 36 transitions. Second operand has 21 states, 19 states have (on average 2.5789473684210527) internal successors, (49), 19 states have internal predecessors, (49), 5 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-02-16 01:22:14,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 01:22:14,111 INFO L93 Difference]: Finished difference Result 78 states and 91 transitions. [2023-02-16 01:22:14,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-02-16 01:22:14,111 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 19 states have (on average 2.5789473684210527) internal successors, (49), 19 states have internal predecessors, (49), 5 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 23 [2023-02-16 01:22:14,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 01:22:14,112 INFO L225 Difference]: With dead ends: 78 [2023-02-16 01:22:14,112 INFO L226 Difference]: Without dead ends: 53 [2023-02-16 01:22:14,113 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 30 SyntacticMatches, 2 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=185, Invalid=807, Unknown=0, NotChecked=0, Total=992 [2023-02-16 01:22:14,113 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 60 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 237 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-02-16 01:22:14,114 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 123 Invalid, 291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 237 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-02-16 01:22:14,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2023-02-16 01:22:14,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 42. [2023-02-16 01:22:14,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 34 states have (on average 1.1176470588235294) internal successors, (38), 35 states have internal predecessors, (38), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2023-02-16 01:22:14,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 46 transitions. [2023-02-16 01:22:14,122 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 46 transitions. Word has length 23 [2023-02-16 01:22:14,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 01:22:14,122 INFO L495 AbstractCegarLoop]: Abstraction has 42 states and 46 transitions. [2023-02-16 01:22:14,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 19 states have (on average 2.5789473684210527) internal successors, (49), 19 states have internal predecessors, (49), 5 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-02-16 01:22:14,123 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 46 transitions. [2023-02-16 01:22:14,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-02-16 01:22:14,123 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 01:22:14,123 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 01:22:14,130 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-02-16 01:22:14,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-02-16 01:22:14,331 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 01:22:14,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 01:22:14,331 INFO L85 PathProgramCache]: Analyzing trace with hash 937647271, now seen corresponding path program 1 times [2023-02-16 01:22:14,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 01:22:14,331 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904022148] [2023-02-16 01:22:14,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 01:22:14,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 01:22:14,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:22:14,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-02-16 01:22:14,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:22:14,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-02-16 01:22:14,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:22:14,453 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-02-16 01:22:14,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 01:22:14,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904022148] [2023-02-16 01:22:14,454 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1904022148] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 01:22:14,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [757137529] [2023-02-16 01:22:14,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 01:22:14,455 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 01:22:14,455 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 01:22:14,461 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-16 01:22:14,472 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-02-16 01:22:14,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:22:14,503 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 32 conjunts are in the unsatisfiable core [2023-02-16 01:22:14,509 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 01:22:14,525 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 49 [2023-02-16 01:22:14,529 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 91 [2023-02-16 01:22:14,547 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-02-16 01:22:15,405 INFO L321 Elim1Store]: treesize reduction 16, result has 15.8 percent of original size [2023-02-16 01:22:15,406 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 14 [2023-02-16 01:22:15,484 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-16 01:22:15,484 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 01:22:15,860 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 45 [2023-02-16 01:22:15,868 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-16 01:22:15,868 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 45 treesize of output 92 [2023-02-16 01:22:15,885 INFO L321 Elim1Store]: treesize reduction 5, result has 58.3 percent of original size [2023-02-16 01:22:15,885 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 23 [2023-02-16 01:22:15,968 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 4 proven. 17 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-16 01:22:15,968 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [757137529] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 01:22:15,969 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-16 01:22:15,969 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 15, 13] total 27 [2023-02-16 01:22:15,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247767199] [2023-02-16 01:22:15,969 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-16 01:22:15,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-02-16 01:22:15,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 01:22:15,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-02-16 01:22:15,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=602, Unknown=0, NotChecked=0, Total=702 [2023-02-16 01:22:15,970 INFO L87 Difference]: Start difference. First operand 42 states and 46 transitions. Second operand has 27 states, 25 states have (on average 2.6) internal successors, (65), 25 states have internal predecessors, (65), 7 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2023-02-16 01:22:23,353 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-16 01:22:24,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 01:22:24,273 INFO L93 Difference]: Finished difference Result 142 states and 167 transitions. [2023-02-16 01:22:24,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2023-02-16 01:22:24,275 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 25 states have (on average 2.6) internal successors, (65), 25 states have internal predecessors, (65), 7 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) Word has length 34 [2023-02-16 01:22:24,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 01:22:24,279 INFO L225 Difference]: With dead ends: 142 [2023-02-16 01:22:24,279 INFO L226 Difference]: Without dead ends: 109 [2023-02-16 01:22:24,281 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 48 SyntacticMatches, 4 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 802 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=510, Invalid=2796, Unknown=0, NotChecked=0, Total=3306 [2023-02-16 01:22:24,283 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 141 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 510 mSolverCounterSat, 130 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 641 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 510 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2023-02-16 01:22:24,285 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [141 Valid, 150 Invalid, 641 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [130 Valid, 510 Invalid, 1 Unknown, 0 Unchecked, 3.7s Time] [2023-02-16 01:22:24,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2023-02-16 01:22:24,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 98. [2023-02-16 01:22:24,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 76 states have (on average 1.144736842105263) internal successors, (87), 80 states have internal predecessors, (87), 14 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (14), 10 states have call predecessors, (14), 14 states have call successors, (14) [2023-02-16 01:22:24,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 115 transitions. [2023-02-16 01:22:24,320 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 115 transitions. Word has length 34 [2023-02-16 01:22:24,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 01:22:24,320 INFO L495 AbstractCegarLoop]: Abstraction has 98 states and 115 transitions. [2023-02-16 01:22:24,321 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 25 states have (on average 2.6) internal successors, (65), 25 states have internal predecessors, (65), 7 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2023-02-16 01:22:24,321 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 115 transitions. [2023-02-16 01:22:24,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-02-16 01:22:24,322 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 01:22:24,322 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 01:22:24,328 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-02-16 01:22:24,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 01:22:24,523 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 01:22:24,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 01:22:24,524 INFO L85 PathProgramCache]: Analyzing trace with hash 642599984, now seen corresponding path program 2 times [2023-02-16 01:22:24,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 01:22:24,524 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180450220] [2023-02-16 01:22:24,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 01:22:24,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 01:22:24,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:22:24,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-02-16 01:22:24,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:22:24,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-02-16 01:22:24,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:22:24,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-02-16 01:22:24,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:22:24,666 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 6 proven. 16 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-02-16 01:22:24,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 01:22:24,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180450220] [2023-02-16 01:22:24,666 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [180450220] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 01:22:24,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [26491055] [2023-02-16 01:22:24,666 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-16 01:22:24,667 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 01:22:24,667 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 01:22:24,668 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-16 01:22:24,670 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-02-16 01:22:24,714 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-16 01:22:24,714 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-16 01:22:24,715 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 31 conjunts are in the unsatisfiable core [2023-02-16 01:22:24,718 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 01:22:24,737 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 49 [2023-02-16 01:22:24,742 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 91 [2023-02-16 01:22:24,762 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 87 treesize of output 3 [2023-02-16 01:22:25,965 INFO L321 Elim1Store]: treesize reduction 16, result has 15.8 percent of original size [2023-02-16 01:22:25,965 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 14 [2023-02-16 01:22:26,030 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-02-16 01:22:26,031 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 01:22:26,444 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 45 [2023-02-16 01:22:26,452 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-16 01:22:26,452 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 45 treesize of output 92 [2023-02-16 01:22:26,468 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-16 01:22:26,469 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 52 treesize of output 39 [2023-02-16 01:22:26,633 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 6 proven. 34 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-02-16 01:22:26,634 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [26491055] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 01:22:26,634 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-16 01:22:26,634 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 15, 15] total 29 [2023-02-16 01:22:26,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466502695] [2023-02-16 01:22:26,634 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-16 01:22:26,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-02-16 01:22:26,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 01:22:26,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-02-16 01:22:26,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=691, Unknown=0, NotChecked=0, Total=812 [2023-02-16 01:22:26,635 INFO L87 Difference]: Start difference. First operand 98 states and 115 transitions. Second operand has 29 states, 27 states have (on average 2.740740740740741) internal successors, (74), 27 states have internal predecessors, (74), 9 states have call successors, (11), 5 states have call predecessors, (11), 2 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2023-02-16 01:22:28,667 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-16 01:22:32,469 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-02-16 01:22:37,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 01:22:37,463 INFO L93 Difference]: Finished difference Result 272 states and 317 transitions. [2023-02-16 01:22:37,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2023-02-16 01:22:37,464 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 27 states have (on average 2.740740740740741) internal successors, (74), 27 states have internal predecessors, (74), 9 states have call successors, (11), 5 states have call predecessors, (11), 2 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) Word has length 45 [2023-02-16 01:22:37,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 01:22:37,466 INFO L225 Difference]: With dead ends: 272 [2023-02-16 01:22:37,466 INFO L226 Difference]: Without dead ends: 185 [2023-02-16 01:22:37,468 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 69 SyntacticMatches, 6 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1084 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=690, Invalid=3600, Unknown=0, NotChecked=0, Total=4290 [2023-02-16 01:22:37,468 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 137 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 648 mSolverCounterSat, 124 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 218 SdHoareTripleChecker+Invalid, 774 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 648 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2023-02-16 01:22:37,469 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [137 Valid, 218 Invalid, 774 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [124 Valid, 648 Invalid, 2 Unknown, 0 Unchecked, 5.9s Time] [2023-02-16 01:22:37,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2023-02-16 01:22:37,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 120. [2023-02-16 01:22:37,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 94 states have (on average 1.127659574468085) internal successors, (106), 97 states have internal predecessors, (106), 14 states have call successors, (14), 11 states have call predecessors, (14), 11 states have return successors, (14), 11 states have call predecessors, (14), 14 states have call successors, (14) [2023-02-16 01:22:37,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 134 transitions. [2023-02-16 01:22:37,507 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 134 transitions. Word has length 45 [2023-02-16 01:22:37,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 01:22:37,507 INFO L495 AbstractCegarLoop]: Abstraction has 120 states and 134 transitions. [2023-02-16 01:22:37,507 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 27 states have (on average 2.740740740740741) internal successors, (74), 27 states have internal predecessors, (74), 9 states have call successors, (11), 5 states have call predecessors, (11), 2 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2023-02-16 01:22:37,507 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 134 transitions. [2023-02-16 01:22:37,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-02-16 01:22:37,508 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 01:22:37,508 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2023-02-16 01:22:37,513 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-02-16 01:22:37,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 01:22:37,713 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 01:22:37,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 01:22:37,713 INFO L85 PathProgramCache]: Analyzing trace with hash -1893600441, now seen corresponding path program 3 times [2023-02-16 01:22:37,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 01:22:37,713 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335915455] [2023-02-16 01:22:37,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 01:22:37,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 01:22:37,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:22:37,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-02-16 01:22:37,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:22:37,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-02-16 01:22:37,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:22:37,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-02-16 01:22:37,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:22:37,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-02-16 01:22:37,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:22:37,868 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 8 proven. 25 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-02-16 01:22:37,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 01:22:37,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335915455] [2023-02-16 01:22:37,868 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [335915455] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 01:22:37,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [204266278] [2023-02-16 01:22:37,868 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-16 01:22:37,869 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 01:22:37,869 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 01:22:37,870 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-16 01:22:37,872 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-02-16 01:22:38,120 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2023-02-16 01:22:38,121 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-16 01:22:38,122 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 27 conjunts are in the unsatisfiable core [2023-02-16 01:22:38,123 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 01:22:38,165 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2023-02-16 01:22:38,165 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 01:22:41,433 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 14 proven. 51 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-02-16 01:22:41,434 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [204266278] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 01:22:41,434 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-16 01:22:41,434 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 16] total 23 [2023-02-16 01:22:41,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758512192] [2023-02-16 01:22:41,434 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-16 01:22:41,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-02-16 01:22:41,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 01:22:41,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-02-16 01:22:41,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=371, Unknown=0, NotChecked=0, Total=506 [2023-02-16 01:22:41,436 INFO L87 Difference]: Start difference. First operand 120 states and 134 transitions. Second operand has 23 states, 23 states have (on average 2.652173913043478) internal successors, (61), 23 states have internal predecessors, (61), 5 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) [2023-02-16 01:22:42,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 01:22:42,685 INFO L93 Difference]: Finished difference Result 226 states and 262 transitions. [2023-02-16 01:22:42,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-02-16 01:22:42,685 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.652173913043478) internal successors, (61), 23 states have internal predecessors, (61), 5 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) Word has length 56 [2023-02-16 01:22:42,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 01:22:42,686 INFO L225 Difference]: With dead ends: 226 [2023-02-16 01:22:42,686 INFO L226 Difference]: Without dead ends: 119 [2023-02-16 01:22:42,686 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 104 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=249, Invalid=681, Unknown=0, NotChecked=0, Total=930 [2023-02-16 01:22:42,687 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 225 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 306 mSolverCounterSat, 154 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 231 SdHoareTripleChecker+Valid, 179 SdHoareTripleChecker+Invalid, 460 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 154 IncrementalHoareTripleChecker+Valid, 306 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-02-16 01:22:42,687 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [231 Valid, 179 Invalid, 460 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [154 Valid, 306 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-02-16 01:22:42,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2023-02-16 01:22:42,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 96. [2023-02-16 01:22:42,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 80 states have (on average 1.05) internal successors, (84), 81 states have internal predecessors, (84), 8 states have call successors, (8), 7 states have call predecessors, (8), 7 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) [2023-02-16 01:22:42,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 100 transitions. [2023-02-16 01:22:42,707 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 100 transitions. Word has length 56 [2023-02-16 01:22:42,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 01:22:42,708 INFO L495 AbstractCegarLoop]: Abstraction has 96 states and 100 transitions. [2023-02-16 01:22:42,708 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.652173913043478) internal successors, (61), 23 states have internal predecessors, (61), 5 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) [2023-02-16 01:22:42,708 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 100 transitions. [2023-02-16 01:22:42,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-02-16 01:22:42,709 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 01:22:42,709 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 5, 5, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2023-02-16 01:22:42,714 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-02-16 01:22:42,913 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 01:22:42,913 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 01:22:42,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 01:22:42,914 INFO L85 PathProgramCache]: Analyzing trace with hash 944832981, now seen corresponding path program 4 times [2023-02-16 01:22:42,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 01:22:42,914 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237138397] [2023-02-16 01:22:42,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 01:22:42,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 01:22:42,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:22:43,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-02-16 01:22:43,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:22:43,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-02-16 01:22:43,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:22:43,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-02-16 01:22:43,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:22:43,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-02-16 01:22:43,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:22:43,241 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 8 proven. 144 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-02-16 01:22:43,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 01:22:43,241 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237138397] [2023-02-16 01:22:43,242 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1237138397] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 01:22:43,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1223787121] [2023-02-16 01:22:43,242 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-02-16 01:22:43,242 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 01:22:43,242 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 01:22:43,243 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-16 01:22:43,245 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-02-16 01:22:43,647 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-02-16 01:22:43,647 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-16 01:22:43,650 WARN L261 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 118 conjunts are in the unsatisfiable core [2023-02-16 01:22:43,655 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 01:22:43,664 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 49 [2023-02-16 01:22:43,667 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 15 [2023-02-16 01:22:43,670 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-02-16 01:22:43,706 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 50 [2023-02-16 01:22:43,711 INFO L321 Elim1Store]: treesize reduction 27, result has 3.6 percent of original size [2023-02-16 01:22:43,711 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 49 treesize of output 95 [2023-02-16 01:22:43,727 INFO L321 Elim1Store]: treesize reduction 35, result has 16.7 percent of original size [2023-02-16 01:22:43,729 INFO L350 Elim1Store]: Elim1 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 2 new quantified variables, introduced 2 case distinctions, treesize of input 73 treesize of output 24 [2023-02-16 01:22:43,756 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 54 [2023-02-16 01:22:43,763 INFO L321 Elim1Store]: treesize reduction 29, result has 3.3 percent of original size [2023-02-16 01:22:43,764 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 53 treesize of output 99 [2023-02-16 01:22:43,826 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 57 [2023-02-16 01:22:43,833 INFO L321 Elim1Store]: treesize reduction 58, result has 1.7 percent of original size [2023-02-16 01:22:43,833 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 56 treesize of output 105 [2023-02-16 01:22:43,845 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-02-16 01:22:43,896 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 61 [2023-02-16 01:22:43,904 INFO L321 Elim1Store]: treesize reduction 62, result has 1.6 percent of original size [2023-02-16 01:22:43,904 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 60 treesize of output 109 [2023-02-16 01:22:43,910 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-02-16 01:22:43,998 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 143 treesize of output 132 [2023-02-16 01:22:44,010 INFO L321 Elim1Store]: treesize reduction 147, result has 0.7 percent of original size [2023-02-16 01:22:44,011 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 127 treesize of output 179 [2023-02-16 01:22:44,135 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 84 treesize of output 71 [2023-02-16 01:22:44,145 INFO L321 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2023-02-16 01:22:44,145 INFO L350 Elim1Store]: Elim1 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 10 case distinctions, treesize of input 70 treesize of output 125 [2023-02-16 01:22:44,176 INFO L321 Elim1Store]: treesize reduction 142, result has 19.8 percent of original size [2023-02-16 01:22:44,177 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 14 case distinctions, treesize of input 94 treesize of output 60 [2023-02-16 01:22:44,231 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 88 treesize of output 75 [2023-02-16 01:22:44,243 INFO L321 Elim1Store]: treesize reduction 128, result has 0.8 percent of original size [2023-02-16 01:22:44,244 INFO L350 Elim1Store]: Elim1 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 10 case distinctions, treesize of input 74 treesize of output 129 [2023-02-16 01:22:44,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 01:22:44,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 01:22:44,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 01:22:44,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 01:22:44,268 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 86 treesize of output 52 [2023-02-16 01:22:44,342 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 97 treesize of output 82 [2023-02-16 01:22:44,375 INFO L321 Elim1Store]: treesize reduction 161, result has 0.6 percent of original size [2023-02-16 01:22:44,375 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 15 case distinctions, treesize of input 81 treesize of output 139 [2023-02-16 01:22:44,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 01:22:44,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 01:22:44,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 01:22:44,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 01:22:44,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 01:22:44,397 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 21 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 87 treesize of output 54 [2023-02-16 01:22:44,486 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 102 treesize of output 85 [2023-02-16 01:22:44,504 INFO L321 Elim1Store]: treesize reduction 182, result has 0.5 percent of original size [2023-02-16 01:22:44,504 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 8 new quantified variables, introduced 21 case distinctions, treesize of input 84 treesize of output 145 [2023-02-16 01:22:44,518 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-02-16 01:22:44,631 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 106 treesize of output 89 [2023-02-16 01:22:44,648 INFO L321 Elim1Store]: treesize reduction 194, result has 0.5 percent of original size [2023-02-16 01:22:44,649 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 8 new quantified variables, introduced 21 case distinctions, treesize of input 88 treesize of output 149 [2023-02-16 01:22:44,874 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-16 01:22:44,874 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 75 treesize of output 92 [2023-02-16 01:22:46,618 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-16 01:22:46,619 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 95 treesize of output 37 [2023-02-16 01:22:46,715 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 13 proven. 190 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-02-16 01:22:46,716 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 01:25:14,328 WARN L233 SmtUtils]: Spent 5.47s on a formula simplification that was a NOOP. DAG size: 103 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-02-16 01:26:29,595 WARN L859 $PredicateComparison]: unable to prove that (let ((.cse8 (+ |c_ULTIMATE.start_main_~index~0#1| 1))) (let ((.cse0 (mod (+ |c_ULTIMATE.start_main_~index~0#1| 11) 4294967296)) (.cse5 (mod .cse8 4294967296))) (or (not (< .cse0 1000)) (forall ((v_ArrVal_145 Int) (v_ArrVal_155 Int) (v_ArrVal_165 Int) (v_ArrVal_161 Int) (v_ArrVal_149 Int)) (let ((.cse2 (store (let ((.cse6 (mod |c_ULTIMATE.start_main_~index~0#1| 2))) (store (store (store (let ((.cse7 (mod .cse8 2))) (store (store (store (store (store (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#array~0#1.base|) (+ (* .cse5 4) |c_ULTIMATE.start_main_~#array~0#1.offset|) v_ArrVal_145) (+ (* (mod (+ |c_ULTIMATE.start_main_~index~0#1| 2) 4294967296) 4) |c_ULTIMATE.start_main_~#array~0#1.offset|) .cse6) (+ (* (mod (+ |c_ULTIMATE.start_main_~index~0#1| 3) 4294967296) 4) |c_ULTIMATE.start_main_~#array~0#1.offset|) v_ArrVal_149) (+ (* (mod (+ |c_ULTIMATE.start_main_~index~0#1| 4) 4294967296) 4) |c_ULTIMATE.start_main_~#array~0#1.offset|) .cse6) (+ (* (mod (+ |c_ULTIMATE.start_main_~index~0#1| 5) 4294967296) 4) |c_ULTIMATE.start_main_~#array~0#1.offset|) .cse7) (+ (* (mod (+ |c_ULTIMATE.start_main_~index~0#1| 6) 4294967296) 4) |c_ULTIMATE.start_main_~#array~0#1.offset|) v_ArrVal_155) (+ (* (mod (+ |c_ULTIMATE.start_main_~index~0#1| 7) 4294967296) 4) |c_ULTIMATE.start_main_~#array~0#1.offset|) .cse7)) (+ (* (mod (+ |c_ULTIMATE.start_main_~index~0#1| 8) 4294967296) 4) |c_ULTIMATE.start_main_~#array~0#1.offset|) .cse6) (+ (* (mod (+ |c_ULTIMATE.start_main_~index~0#1| 9) 4294967296) 4) |c_ULTIMATE.start_main_~#array~0#1.offset|) v_ArrVal_161) (+ (* (mod (+ |c_ULTIMATE.start_main_~index~0#1| 10) 4294967296) 4) |c_ULTIMATE.start_main_~#array~0#1.offset|) .cse6)) (+ |c_ULTIMATE.start_main_~#array~0#1.offset| (* .cse0 4)) v_ArrVal_165))) (or (let ((.cse1 (select .cse2 (+ |c_ULTIMATE.start_main_~#array~0#1.offset| 4)))) (< .cse1 (+ (* 4294967296 (div .cse1 4294967296)) 1))) (let ((.cse3 (select .cse2 (+ |c_ULTIMATE.start_main_~#array~0#1.offset| 16)))) (< .cse3 (+ (* 4294967296 (div .cse3 4294967296)) 1))) (not (= (mod (select .cse2 |c_ULTIMATE.start_main_~#array~0#1.offset|) 4294967296) 0)) (let ((.cse4 (select .cse2 (+ |c_ULTIMATE.start_main_~#array~0#1.offset| 12)))) (< .cse4 (+ (* 4294967296 (div .cse4 4294967296)) 1)))))) (not (< .cse5 1000))))) is different from true [2023-02-16 01:26:30,573 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 45 [2023-02-16 01:26:36,817 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-16 01:26:36,818 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 45 treesize of output 92 [2023-02-16 01:26:42,084 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-16 01:26:42,086 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-16 01:26:42,087 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-16 01:26:42,088 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-16 01:26:42,089 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-16 01:26:42,090 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-16 01:26:42,091 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-16 01:26:42,099 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-16 01:26:42,101 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-16 01:26:42,102 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-16 01:26:42,103 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-16 01:26:42,104 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-16 01:26:42,105 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-16 01:26:42,107 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-16 01:26:42,108 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-16 01:26:42,112 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-16 01:26:42,113 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-16 01:26:42,114 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-16 01:26:42,115 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-16 01:26:42,116 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-16 01:26:42,117 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-16 01:26:42,118 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-16 01:26:42,119 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-16 01:26:42,120 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-16 01:26:42,121 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-16 01:26:42,123 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-16 01:26:42,124 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-16 01:26:42,125 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-16 01:26:42,126 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-16 01:26:42,127 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-16 01:26:42,127 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-16 01:26:42,128 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-16 01:26:42,130 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-16 01:26:42,132 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-16 01:26:42,132 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-16 01:26:42,133 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-16 01:26:43,476 INFO L321 Elim1Store]: treesize reduction 129, result has 38.3 percent of original size [2023-02-16 01:26:43,477 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 11 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 8 case distinctions, treesize of input 4352 treesize of output 4277 [2023-02-16 01:26:43,526 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-16 01:26:43,526 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 2211 treesize of output 2160