./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/list-properties/simple_built_from_end.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7e1ff0e6 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/list-properties/simple_built_from_end.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 0eb3d3e07cae1efa9dc9af5091aea6a309746434756c62bcf3ece83b84aec27a --- Real Ultimate output --- This is Ultimate 0.2.2-?-7e1ff0e [2023-02-14 22:41:47,980 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-14 22:41:47,982 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-14 22:41:48,021 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-14 22:41:48,022 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-14 22:41:48,025 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-14 22:41:48,027 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-14 22:41:48,029 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-14 22:41:48,030 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-14 22:41:48,034 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-14 22:41:48,036 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-14 22:41:48,037 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-14 22:41:48,038 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-14 22:41:48,040 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-14 22:41:48,041 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-14 22:41:48,042 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-14 22:41:48,043 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-14 22:41:48,044 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-14 22:41:48,045 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-14 22:41:48,050 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-14 22:41:48,051 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-14 22:41:48,052 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-14 22:41:48,053 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-14 22:41:48,054 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-14 22:41:48,061 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-14 22:41:48,062 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-14 22:41:48,062 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-14 22:41:48,064 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-14 22:41:48,065 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-14 22:41:48,066 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-14 22:41:48,066 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-14 22:41:48,066 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-14 22:41:48,068 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-14 22:41:48,068 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-14 22:41:48,069 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-14 22:41:48,069 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-14 22:41:48,070 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-14 22:41:48,070 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-14 22:41:48,070 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-14 22:41:48,071 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-14 22:41:48,072 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-14 22:41:48,073 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-02-14 22:41:48,102 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-14 22:41:48,102 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-14 22:41:48,102 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-14 22:41:48,103 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-14 22:41:48,103 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-14 22:41:48,104 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-14 22:41:48,104 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-14 22:41:48,104 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-14 22:41:48,105 INFO L138 SettingsManager]: * Use SBE=true [2023-02-14 22:41:48,105 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-14 22:41:48,106 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-14 22:41:48,106 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-14 22:41:48,106 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-14 22:41:48,106 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-14 22:41:48,106 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-14 22:41:48,107 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-14 22:41:48,107 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-14 22:41:48,107 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-14 22:41:48,107 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-14 22:41:48,107 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-14 22:41:48,107 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-14 22:41:48,108 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-14 22:41:48,108 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-14 22:41:48,108 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-14 22:41:48,108 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-14 22:41:48,108 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-14 22:41:48,108 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-14 22:41:48,109 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-14 22:41:48,109 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-14 22:41:48,109 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-14 22:41:48,109 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-14 22:41:48,109 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-14 22:41:48,110 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-14 22:41:48,110 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-14 22:41:48,110 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-14 22:41:48,110 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0eb3d3e07cae1efa9dc9af5091aea6a309746434756c62bcf3ece83b84aec27a [2023-02-14 22:41:48,352 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-14 22:41:48,380 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-14 22:41:48,382 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-14 22:41:48,383 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-14 22:41:48,384 INFO L275 PluginConnector]: CDTParser initialized [2023-02-14 22:41:48,386 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/list-properties/simple_built_from_end.i [2023-02-14 22:41:49,437 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-14 22:41:49,638 INFO L351 CDTParser]: Found 1 translation units. [2023-02-14 22:41:49,639 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-properties/simple_built_from_end.i [2023-02-14 22:41:49,649 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c7276bcae/e02b53916f834580990119effa090434/FLAG3eb39455f [2023-02-14 22:41:49,661 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c7276bcae/e02b53916f834580990119effa090434 [2023-02-14 22:41:49,663 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-14 22:41:49,664 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-14 22:41:49,665 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-14 22:41:49,666 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-14 22:41:49,669 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-14 22:41:49,669 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.02 10:41:49" (1/1) ... [2023-02-14 22:41:49,670 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d99d861 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 10:41:49, skipping insertion in model container [2023-02-14 22:41:49,670 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.02 10:41:49" (1/1) ... [2023-02-14 22:41:49,677 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-14 22:41:49,717 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-14 22:41:49,941 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/list-properties/simple_built_from_end.i[23125,23138] [2023-02-14 22:41:49,947 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-14 22:41:49,956 INFO L203 MainTranslator]: Completed pre-run [2023-02-14 22:41:50,011 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/list-properties/simple_built_from_end.i[23125,23138] [2023-02-14 22:41:50,020 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-14 22:41:50,045 INFO L208 MainTranslator]: Completed translation [2023-02-14 22:41:50,046 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 10:41:50 WrapperNode [2023-02-14 22:41:50,046 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-14 22:41:50,048 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-14 22:41:50,048 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-14 22:41:50,048 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-14 22:41:50,054 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 10:41:50" (1/1) ... [2023-02-14 22:41:50,074 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 10:41:50" (1/1) ... [2023-02-14 22:41:50,091 INFO L138 Inliner]: procedures = 124, calls = 12, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 43 [2023-02-14 22:41:50,092 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-14 22:41:50,093 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-14 22:41:50,093 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-14 22:41:50,093 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-14 22:41:50,100 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 10:41:50" (1/1) ... [2023-02-14 22:41:50,101 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 10:41:50" (1/1) ... [2023-02-14 22:41:50,112 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 10:41:50" (1/1) ... [2023-02-14 22:41:50,113 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 10:41:50" (1/1) ... [2023-02-14 22:41:50,118 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 10:41:50" (1/1) ... [2023-02-14 22:41:50,121 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 10:41:50" (1/1) ... [2023-02-14 22:41:50,122 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 10:41:50" (1/1) ... [2023-02-14 22:41:50,123 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 10:41:50" (1/1) ... [2023-02-14 22:41:50,125 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-14 22:41:50,126 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-14 22:41:50,126 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-14 22:41:50,126 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-14 22:41:50,127 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 10:41:50" (1/1) ... [2023-02-14 22:41:50,131 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-14 22:41:50,142 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 22:41:50,160 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) [2023-02-14 22:41:50,172 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 [2023-02-14 22:41:50,201 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-02-14 22:41:50,201 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-02-14 22:41:50,201 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-02-14 22:41:50,201 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-14 22:41:50,201 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-02-14 22:41:50,202 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-02-14 22:41:50,202 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-14 22:41:50,202 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-14 22:41:50,202 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-14 22:41:50,298 INFO L235 CfgBuilder]: Building ICFG [2023-02-14 22:41:50,300 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-14 22:41:50,453 INFO L276 CfgBuilder]: Performing block encoding [2023-02-14 22:41:50,467 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-14 22:41:50,468 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2023-02-14 22:41:50,469 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.02 10:41:50 BoogieIcfgContainer [2023-02-14 22:41:50,470 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-14 22:41:50,473 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-14 22:41:50,473 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-14 22:41:50,476 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-14 22:41:50,476 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.02 10:41:49" (1/3) ... [2023-02-14 22:41:50,476 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2635a328 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.02 10:41:50, skipping insertion in model container [2023-02-14 22:41:50,476 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 10:41:50" (2/3) ... [2023-02-14 22:41:50,477 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2635a328 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.02 10:41:50, skipping insertion in model container [2023-02-14 22:41:50,478 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.02 10:41:50" (3/3) ... [2023-02-14 22:41:50,479 INFO L112 eAbstractionObserver]: Analyzing ICFG simple_built_from_end.i [2023-02-14 22:41:50,511 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-14 22:41:50,511 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-02-14 22:41:50,584 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-14 22:41:50,592 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;@31c47832, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-14 22:41:50,592 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-02-14 22:41:50,596 INFO L276 IsEmpty]: Start isEmpty. Operand has 15 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 14 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 22:41:50,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-02-14 22:41:50,603 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 22:41:50,604 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-02-14 22:41:50,605 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 22:41:50,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 22:41:50,609 INFO L85 PathProgramCache]: Analyzing trace with hash 890037006, now seen corresponding path program 1 times [2023-02-14 22:41:50,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 22:41:50,617 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106231750] [2023-02-14 22:41:50,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 22:41:50,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 22:41:50,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 22:41:50,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 22:41:50,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 22:41:50,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106231750] [2023-02-14 22:41:50,764 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2106231750] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 22:41:50,764 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 22:41:50,765 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-14 22:41:50,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944020100] [2023-02-14 22:41:50,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 22:41:50,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-02-14 22:41:50,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 22:41:50,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-02-14 22:41:50,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-14 22:41:50,817 INFO L87 Difference]: Start difference. First operand has 15 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 14 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 22:41:50,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 22:41:50,831 INFO L93 Difference]: Finished difference Result 23 states and 30 transitions. [2023-02-14 22:41:50,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-02-14 22:41:50,835 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-02-14 22:41:50,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 22:41:50,841 INFO L225 Difference]: With dead ends: 23 [2023-02-14 22:41:50,841 INFO L226 Difference]: Without dead ends: 11 [2023-02-14 22:41:50,843 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-14 22:41:50,852 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-14 22:41:50,853 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-14 22:41:50,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2023-02-14 22:41:50,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2023-02-14 22:41:50,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.2) internal successors, (12), 10 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 22:41:50,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 12 transitions. [2023-02-14 22:41:50,881 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 12 transitions. Word has length 6 [2023-02-14 22:41:50,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 22:41:50,882 INFO L495 AbstractCegarLoop]: Abstraction has 11 states and 12 transitions. [2023-02-14 22:41:50,882 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 22:41:50,882 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 12 transitions. [2023-02-14 22:41:50,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-02-14 22:41:50,883 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 22:41:50,883 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-02-14 22:41:50,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-02-14 22:41:50,884 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 22:41:50,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 22:41:50,885 INFO L85 PathProgramCache]: Analyzing trace with hash 1806862075, now seen corresponding path program 1 times [2023-02-14 22:41:50,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 22:41:50,886 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168773178] [2023-02-14 22:41:50,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 22:41:50,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 22:41:50,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 22:41:50,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 22:41:50,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 22:41:50,985 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168773178] [2023-02-14 22:41:50,986 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168773178] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 22:41:50,986 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 22:41:50,986 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-14 22:41:50,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028580020] [2023-02-14 22:41:50,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 22:41:50,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-14 22:41:50,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 22:41:50,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-14 22:41:50,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-14 22:41:50,991 INFO L87 Difference]: Start difference. First operand 11 states and 12 transitions. Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 22:41:51,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 22:41:51,011 INFO L93 Difference]: Finished difference Result 21 states and 23 transitions. [2023-02-14 22:41:51,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-14 22:41:51,012 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2023-02-14 22:41:51,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 22:41:51,012 INFO L225 Difference]: With dead ends: 21 [2023-02-14 22:41:51,013 INFO L226 Difference]: Without dead ends: 15 [2023-02-14 22:41:51,013 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 [2023-02-14 22:41:51,014 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 2 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-14 22:41:51,015 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 19 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-14 22:41:51,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2023-02-14 22:41:51,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 13. [2023-02-14 22:41:51,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 12 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 22:41:51,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2023-02-14 22:41:51,022 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 7 [2023-02-14 22:41:51,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 22:41:51,023 INFO L495 AbstractCegarLoop]: Abstraction has 13 states and 14 transitions. [2023-02-14 22:41:51,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 22:41:51,024 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2023-02-14 22:41:51,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-02-14 22:41:51,024 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 22:41:51,025 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 22:41:51,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-02-14 22:41:51,025 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 22:41:51,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 22:41:51,030 INFO L85 PathProgramCache]: Analyzing trace with hash -1217762572, now seen corresponding path program 1 times [2023-02-14 22:41:51,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 22:41:51,030 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075549878] [2023-02-14 22:41:51,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 22:41:51,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 22:41:51,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 22:41:51,292 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 22:41:51,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 22:41:51,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075549878] [2023-02-14 22:41:51,293 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2075549878] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 22:41:51,294 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 22:41:51,295 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-14 22:41:51,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454495687] [2023-02-14 22:41:51,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 22:41:51,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-14 22:41:51,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 22:41:51,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-14 22:41:51,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-14 22:41:51,298 INFO L87 Difference]: Start difference. First operand 13 states and 14 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 22:41:51,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 22:41:51,348 INFO L93 Difference]: Finished difference Result 20 states and 21 transitions. [2023-02-14 22:41:51,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-14 22:41:51,349 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2023-02-14 22:41:51,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 22:41:51,350 INFO L225 Difference]: With dead ends: 20 [2023-02-14 22:41:51,350 INFO L226 Difference]: Without dead ends: 18 [2023-02-14 22:41:51,350 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-02-14 22:41:51,352 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 4 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-14 22:41:51,355 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 28 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-14 22:41:51,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2023-02-14 22:41:51,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 15. [2023-02-14 22:41:51,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.1428571428571428) internal successors, (16), 14 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 22:41:51,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2023-02-14 22:41:51,362 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 11 [2023-02-14 22:41:51,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 22:41:51,362 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2023-02-14 22:41:51,362 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 22:41:51,363 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2023-02-14 22:41:51,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-02-14 22:41:51,363 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 22:41:51,363 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 22:41:51,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-02-14 22:41:51,364 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 22:41:51,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 22:41:51,365 INFO L85 PathProgramCache]: Analyzing trace with hash 1228764301, now seen corresponding path program 1 times [2023-02-14 22:41:51,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 22:41:51,366 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188185321] [2023-02-14 22:41:51,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 22:41:51,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 22:41:51,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 22:41:51,604 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 22:41:51,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 22:41:51,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188185321] [2023-02-14 22:41:51,605 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1188185321] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-14 22:41:51,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [657001754] [2023-02-14 22:41:51,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 22:41:51,606 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 22:41:51,606 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 22:41:51,609 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) [2023-02-14 22:41:51,622 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-14 22:41:51,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 22:41:51,706 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 23 conjunts are in the unsatisfiable core [2023-02-14 22:41:51,713 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 22:41:51,845 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 [2023-02-14 22:41:51,856 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 [2023-02-14 22:41:51,932 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 [2023-02-14 22:41:51,938 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 [2023-02-14 22:41:51,946 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 22:41:51,947 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 22:41:51,998 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 22:41:51,999 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [657001754] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-14 22:41:51,999 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-14 22:41:51,999 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 6 [2023-02-14 22:41:51,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415400860] [2023-02-14 22:41:51,999 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-14 22:41:52,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-14 22:41:52,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 22:41:52,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-14 22:41:52,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-02-14 22:41:52,001 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 22:41:52,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 22:41:52,032 INFO L93 Difference]: Finished difference Result 30 states and 32 transitions. [2023-02-14 22:41:52,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-14 22:41:52,032 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2023-02-14 22:41:52,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 22:41:52,033 INFO L225 Difference]: With dead ends: 30 [2023-02-14 22:41:52,033 INFO L226 Difference]: Without dead ends: 21 [2023-02-14 22:41:52,033 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-02-14 22:41:52,034 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 4 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-14 22:41:52,035 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 27 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-14 22:41:52,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2023-02-14 22:41:52,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 19. [2023-02-14 22:41:52,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 18 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 22:41:52,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2023-02-14 22:41:52,038 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 14 [2023-02-14 22:41:52,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 22:41:52,038 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2023-02-14 22:41:52,039 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 22:41:52,039 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2023-02-14 22:41:52,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-02-14 22:41:52,039 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 22:41:52,040 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 22:41:52,048 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-02-14 22:41:52,245 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 22:41:52,245 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 22:41:52,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 22:41:52,246 INFO L85 PathProgramCache]: Analyzing trace with hash 1718933108, now seen corresponding path program 2 times [2023-02-14 22:41:52,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 22:41:52,246 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785704323] [2023-02-14 22:41:52,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 22:41:52,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 22:41:52,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 22:41:52,747 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 22:41:52,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 22:41:52,748 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785704323] [2023-02-14 22:41:52,748 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785704323] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-14 22:41:52,748 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1193185891] [2023-02-14 22:41:52,748 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-14 22:41:52,749 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 22:41:52,749 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 22:41:52,750 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) [2023-02-14 22:41:52,752 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-02-14 22:41:52,821 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-14 22:41:52,821 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-14 22:41:52,823 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 37 conjunts are in the unsatisfiable core [2023-02-14 22:41:52,825 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 22:41:52,830 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 6 treesize of output 5 [2023-02-14 22:41:52,842 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 15 [2023-02-14 22:41:52,860 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-02-14 22:41:52,861 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 11 treesize of output 11 [2023-02-14 22:41:52,892 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 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 [2023-02-14 22:41:52,896 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2023-02-14 22:41:52,903 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 [2023-02-14 22:41:52,973 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 27 treesize of output 15 [2023-02-14 22:41:52,980 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 15 treesize of output 7 [2023-02-14 22:41:52,997 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 [2023-02-14 22:41:53,000 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 22:41:53,001 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 22:41:53,062 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_102 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~t~0#1.base| v_ArrVal_102) |c_ULTIMATE.start_main_~p~0#1.base|) |c_ULTIMATE.start_main_~p~0#1.offset|) 1)) is different from false [2023-02-14 22:41:53,134 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-14 22:41:53,135 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 1 new quantified variables, introduced 2 case distinctions, treesize of input 23 treesize of output 29 [2023-02-14 22:41:53,140 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 30 treesize of output 22 [2023-02-14 22:41:53,145 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-02-14 22:41:53,162 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2023-02-14 22:41:53,162 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1193185891] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-14 22:41:53,162 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-14 22:41:53,162 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 14 [2023-02-14 22:41:53,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049639760] [2023-02-14 22:41:53,163 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-14 22:41:53,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-02-14 22:41:53,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 22:41:53,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-02-14 22:41:53,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=124, Unknown=1, NotChecked=22, Total=182 [2023-02-14 22:41:53,168 INFO L87 Difference]: Start difference. First operand 19 states and 20 transitions. Second operand has 14 states, 14 states have (on average 2.642857142857143) internal successors, (37), 14 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 22:41:53,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 22:41:53,441 INFO L93 Difference]: Finished difference Result 27 states and 28 transitions. [2023-02-14 22:41:53,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-02-14 22:41:53,441 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.642857142857143) internal successors, (37), 14 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2023-02-14 22:41:53,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 22:41:53,442 INFO L225 Difference]: With dead ends: 27 [2023-02-14 22:41:53,442 INFO L226 Difference]: Without dead ends: 25 [2023-02-14 22:41:53,442 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=114, Invalid=269, Unknown=1, NotChecked=36, Total=420 [2023-02-14 22:41:53,443 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 31 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 16 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-14 22:41:53,443 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 40 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 64 Invalid, 0 Unknown, 16 Unchecked, 0.1s Time] [2023-02-14 22:41:53,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2023-02-14 22:41:53,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 22. [2023-02-14 22:41:53,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.0952380952380953) internal successors, (23), 21 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 22:41:53,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2023-02-14 22:41:53,447 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 18 [2023-02-14 22:41:53,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 22:41:53,447 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2023-02-14 22:41:53,447 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.642857142857143) internal successors, (37), 14 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 22:41:53,447 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2023-02-14 22:41:53,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-02-14 22:41:53,449 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 22:41:53,449 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2023-02-14 22:41:53,456 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-02-14 22:41:53,649 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 22:41:53,650 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 22:41:53,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 22:41:53,650 INFO L85 PathProgramCache]: Analyzing trace with hash -154052339, now seen corresponding path program 3 times [2023-02-14 22:41:53,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 22:41:53,650 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940585302] [2023-02-14 22:41:53,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 22:41:53,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 22:41:53,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 22:41:54,065 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 22:41:54,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 22:41:54,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940585302] [2023-02-14 22:41:54,066 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [940585302] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-14 22:41:54,066 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [201805576] [2023-02-14 22:41:54,066 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-14 22:41:54,066 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 22:41:54,066 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 22:41:54,069 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) [2023-02-14 22:41:54,092 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-02-14 22:41:54,149 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-02-14 22:41:54,149 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-14 22:41:54,151 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 48 conjunts are in the unsatisfiable core [2023-02-14 22:41:54,155 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 22:41:54,168 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 6 treesize of output 5 [2023-02-14 22:41:54,186 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 [2023-02-14 22:41:54,190 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 [2023-02-14 22:41:54,214 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-02-14 22:41:54,214 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 11 treesize of output 11 [2023-02-14 22:41:54,252 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 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 9 treesize of output 12 [2023-02-14 22:41:54,256 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-02-14 22:41:54,266 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 23 [2023-02-14 22:41:54,276 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 8 treesize of output 7 [2023-02-14 22:41:54,427 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-14 22:41:54,434 INFO L321 Elim1Store]: treesize reduction 17, result has 15.0 percent of original size [2023-02-14 22:41:54,434 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 65 treesize of output 37 [2023-02-14 22:41:54,443 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2023-02-14 22:41:54,443 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 18 [2023-02-14 22:41:54,448 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 22:41:54,448 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 22:41:54,509 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-14 22:41:54,510 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 21 [2023-02-14 22:41:54,518 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-14 22:41:54,518 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 21 [2023-02-14 22:41:54,526 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse1 (+ |c_ULTIMATE.start_main_~t~0#1.offset| 4)) (.cse0 (+ |c_ULTIMATE.start_main_~p~0#1.offset| 4))) (and (forall ((v_arrayElimArr_3 (Array Int Int))) (or (= (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~t~0#1.base| v_arrayElimArr_3) |c_ULTIMATE.start_main_~p~0#1.base|) .cse0) 0) (not (= (select v_arrayElimArr_3 .cse1) |c_ULTIMATE.start_main_~p~0#1.offset|)))) (forall ((v_arrayElimArr_4 (Array Int Int))) (or (not (= (select v_arrayElimArr_4 .cse1) |c_ULTIMATE.start_main_~p~0#1.base|)) (= (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~t~0#1.base| v_arrayElimArr_4) |c_ULTIMATE.start_main_~p~0#1.base|) .cse0) 0))))) is different from false [2023-02-14 22:41:54,639 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-14 22:41:54,640 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 23 [2023-02-14 22:41:54,644 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 36 treesize of output 24 [2023-02-14 22:41:54,651 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-14 22:41:54,652 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 18 treesize of output 20 [2023-02-14 22:41:54,686 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-14 22:41:54,687 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 23 [2023-02-14 22:41:54,692 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 36 treesize of output 24 [2023-02-14 22:41:54,700 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-14 22:41:54,704 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 18 treesize of output 20 [2023-02-14 22:41:54,823 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2023-02-14 22:41:54,823 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [201805576] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-14 22:41:54,823 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-14 22:41:54,823 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2023-02-14 22:41:54,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508585778] [2023-02-14 22:41:54,824 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-14 22:41:54,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-02-14 22:41:54,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 22:41:54,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-02-14 22:41:54,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=145, Unknown=1, NotChecked=24, Total=210 [2023-02-14 22:41:54,827 INFO L87 Difference]: Start difference. First operand 22 states and 23 transitions. Second operand has 15 states, 15 states have (on average 3.0) internal successors, (45), 15 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 22:41:57,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 22:41:57,017 INFO L93 Difference]: Finished difference Result 40 states and 42 transitions. [2023-02-14 22:41:57,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-02-14 22:41:57,018 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.0) internal successors, (45), 15 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2023-02-14 22:41:57,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 22:41:57,019 INFO L225 Difference]: With dead ends: 40 [2023-02-14 22:41:57,019 INFO L226 Difference]: Without dead ends: 28 [2023-02-14 22:41:57,019 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=47, Invalid=166, Unknown=1, NotChecked=26, Total=240 [2023-02-14 22:41:57,020 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 6 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 18 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-14 22:41:57,020 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 79 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 85 Invalid, 0 Unknown, 18 Unchecked, 0.1s Time] [2023-02-14 22:41:57,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2023-02-14 22:41:57,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 26. [2023-02-14 22:41:57,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 25 states have (on average 1.08) internal successors, (27), 25 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 22:41:57,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 27 transitions. [2023-02-14 22:41:57,025 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 27 transitions. Word has length 21 [2023-02-14 22:41:57,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 22:41:57,025 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 27 transitions. [2023-02-14 22:41:57,025 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.0) internal successors, (45), 15 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 22:41:57,025 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 27 transitions. [2023-02-14 22:41:57,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-02-14 22:41:57,025 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 22:41:57,026 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1] [2023-02-14 22:41:57,034 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-02-14 22:41:57,232 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 22:41:57,232 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 22:41:57,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 22:41:57,232 INFO L85 PathProgramCache]: Analyzing trace with hash -336964282, now seen corresponding path program 4 times [2023-02-14 22:41:57,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 22:41:57,233 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332190922] [2023-02-14 22:41:57,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 22:41:57,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 22:41:57,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 22:41:58,057 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 8 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 22:41:58,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 22:41:58,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [332190922] [2023-02-14 22:41:58,057 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [332190922] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-14 22:41:58,058 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2041407454] [2023-02-14 22:41:58,058 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-02-14 22:41:58,058 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 22:41:58,058 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 22:41:58,060 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) [2023-02-14 22:41:58,063 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-02-14 22:41:58,136 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-02-14 22:41:58,136 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-14 22:41:58,138 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 63 conjunts are in the unsatisfiable core [2023-02-14 22:41:58,142 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 22:41:58,146 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 6 treesize of output 5 [2023-02-14 22:41:58,155 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 15 [2023-02-14 22:41:58,186 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-02-14 22:41:58,187 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 17 treesize of output 21 [2023-02-14 22:41:58,237 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 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 [2023-02-14 22:41:58,244 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2023-02-14 22:41:58,250 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 [2023-02-14 22:41:58,321 INFO L321 Elim1Store]: treesize reduction 8, result has 61.9 percent of original size [2023-02-14 22:41:58,322 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 22 [2023-02-14 22:41:58,389 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 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 9 treesize of output 12 [2023-02-14 22:41:58,394 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 21 [2023-02-14 22:41:58,398 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 36 [2023-02-14 22:41:58,405 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 24 [2023-02-14 22:41:58,414 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 8 treesize of output 7 [2023-02-14 22:41:58,582 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-14 22:41:58,592 INFO L321 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2023-02-14 22:41:58,592 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 89 treesize of output 49 [2023-02-14 22:41:58,600 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2023-02-14 22:41:58,601 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 18 [2023-02-14 22:41:58,616 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 [2023-02-14 22:41:58,619 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 8 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 22:41:58,619 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 22:41:58,685 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-14 22:41:58,685 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 42 [2023-02-14 22:41:58,691 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-14 22:41:58,691 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 37 [2023-02-14 22:41:58,706 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_arrayElimArr_8 (Array Int Int)) (v_ArrVal_256 (Array Int Int)) (v_arrayElimArr_9 (Array Int Int))) (let ((.cse0 (+ |c_ULTIMATE.start_main_~t~0#1.offset| 4))) (or (not (= (select v_arrayElimArr_8 .cse0) |c_ULTIMATE.start_main_~p~0#1.base|)) (= (let ((.cse1 (+ |c_ULTIMATE.start_main_~p~0#1.offset| 4))) (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~t~0#1.base| v_ArrVal_256) (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~t~0#1.base| v_arrayElimArr_8) |c_ULTIMATE.start_main_~p~0#1.base|) .cse1)) (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~t~0#1.base| v_arrayElimArr_9) |c_ULTIMATE.start_main_~p~0#1.base|) .cse1))) 1) (not (= (select v_arrayElimArr_9 .cse0) |c_ULTIMATE.start_main_~p~0#1.offset|))))) is different from false [2023-02-14 22:41:58,778 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-14 22:41:58,778 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 55 treesize of output 56 [2023-02-14 22:41:58,784 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 22:41:58,784 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 102 treesize of output 88 [2023-02-14 22:41:58,793 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-14 22:41:58,793 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 84 treesize of output 74 [2023-02-14 22:41:58,808 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-14 22:41:58,808 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 41 treesize of output 43 [2023-02-14 22:41:58,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 22:41:58,816 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 120 treesize of output 98 [2023-02-14 22:41:58,828 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-14 22:41:58,828 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 110 treesize of output 108 [2023-02-14 22:41:59,475 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-14 22:41:59,475 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 11 treesize of output 15 [2023-02-14 22:41:59,482 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 22:41:59,529 WARN L207 Elim1Store]: Array PQE input equivalent to true [2023-02-14 22:42:00,369 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-14 22:42:00,370 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 1 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 32 [2023-02-14 22:42:00,374 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 60 treesize of output 52 [2023-02-14 22:42:00,379 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 22 [2023-02-14 22:42:00,387 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 38 [2023-02-14 22:42:00,461 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 8 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 4 not checked. [2023-02-14 22:42:00,461 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2041407454] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-14 22:42:00,461 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-14 22:42:00,462 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 11] total 26 [2023-02-14 22:42:00,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166968231] [2023-02-14 22:42:00,462 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-14 22:42:00,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-02-14 22:42:00,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 22:42:00,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-02-14 22:42:00,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=514, Unknown=2, NotChecked=46, Total=650 [2023-02-14 22:42:00,463 INFO L87 Difference]: Start difference. First operand 26 states and 27 transitions. Second operand has 26 states, 26 states have (on average 2.3076923076923075) internal successors, (60), 26 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 22:42:01,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 22:42:01,098 INFO L93 Difference]: Finished difference Result 34 states and 35 transitions. [2023-02-14 22:42:01,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-02-14 22:42:01,099 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.3076923076923075) internal successors, (60), 26 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2023-02-14 22:42:01,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 22:42:01,099 INFO L225 Difference]: With dead ends: 34 [2023-02-14 22:42:01,100 INFO L226 Difference]: Without dead ends: 32 [2023-02-14 22:42:01,100 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 236 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=254, Invalid=938, Unknown=2, NotChecked=66, Total=1260 [2023-02-14 22:42:01,101 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 61 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 23 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-14 22:42:01,101 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 95 Invalid, 224 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 196 Invalid, 0 Unknown, 23 Unchecked, 0.2s Time] [2023-02-14 22:42:01,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2023-02-14 22:42:01,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 29. [2023-02-14 22:42:01,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 28 states have (on average 1.0714285714285714) internal successors, (30), 28 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 22:42:01,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 30 transitions. [2023-02-14 22:42:01,106 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 30 transitions. Word has length 25 [2023-02-14 22:42:01,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 22:42:01,106 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 30 transitions. [2023-02-14 22:42:01,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.3076923076923075) internal successors, (60), 26 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 22:42:01,107 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 30 transitions. [2023-02-14 22:42:01,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-02-14 22:42:01,107 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 22:42:01,107 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1] [2023-02-14 22:42:01,117 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-02-14 22:42:01,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 22:42:01,317 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 22:42:01,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 22:42:01,318 INFO L85 PathProgramCache]: Analyzing trace with hash -1159556869, now seen corresponding path program 5 times [2023-02-14 22:42:01,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 22:42:01,318 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461235315] [2023-02-14 22:42:01,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 22:42:01,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 22:42:01,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 22:42:02,456 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 22:42:02,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 22:42:02,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461235315] [2023-02-14 22:42:02,456 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [461235315] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-14 22:42:02,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1291589302] [2023-02-14 22:42:02,456 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-02-14 22:42:02,457 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 22:42:02,457 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 22:42:02,459 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) [2023-02-14 22:42:02,481 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-02-14 22:42:02,576 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2023-02-14 22:42:02,576 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-14 22:42:02,579 INFO L263 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 73 conjunts are in the unsatisfiable core [2023-02-14 22:42:02,583 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 22:42:02,596 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 6 treesize of output 5 [2023-02-14 22:42:02,613 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 [2023-02-14 22:42:02,621 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 [2023-02-14 22:42:02,646 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-02-14 22:42:02,647 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 17 treesize of output 21 [2023-02-14 22:42:02,709 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 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 9 treesize of output 12 [2023-02-14 22:42:02,715 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-02-14 22:42:02,723 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 23 [2023-02-14 22:42:02,730 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 8 treesize of output 7 [2023-02-14 22:42:02,788 INFO L321 Elim1Store]: treesize reduction 8, result has 61.9 percent of original size [2023-02-14 22:42:02,788 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 22 [2023-02-14 22:42:02,850 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 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 9 treesize of output 12 [2023-02-14 22:42:02,855 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 37 [2023-02-14 22:42:02,858 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 8 treesize of output 7 [2023-02-14 22:42:02,871 INFO L321 Elim1Store]: treesize reduction 25, result has 16.7 percent of original size [2023-02-14 22:42:02,872 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 55 treesize of output 51 [2023-02-14 22:42:03,222 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-14 22:42:03,248 INFO L321 Elim1Store]: treesize reduction 87, result has 11.2 percent of original size [2023-02-14 22:42:03,249 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 9 new quantified variables, introduced 10 case distinctions, treesize of input 144 treesize of output 82 [2023-02-14 22:42:03,265 INFO L321 Elim1Store]: treesize reduction 10, result has 41.2 percent of original size [2023-02-14 22:42:03,265 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 2 case distinctions, treesize of input 41 treesize of output 29 [2023-02-14 22:42:03,272 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 3 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 22:42:03,272 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 22:42:03,437 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-14 22:42:03,438 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 44 [2023-02-14 22:42:03,444 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-14 22:42:03,444 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 39 [2023-02-14 22:42:03,455 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-14 22:42:03,455 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 49 [2023-02-14 22:42:03,460 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-14 22:42:03,461 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 39 [2023-02-14 22:42:03,473 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse2 (+ |c_ULTIMATE.start_main_~p~0#1.offset| 4)) (.cse0 (+ |c_ULTIMATE.start_main_~t~0#1.offset| 4))) (and (forall ((v_arrayElimArr_17 (Array Int Int)) (v_arrayElimArr_18 (Array Int Int))) (or (not (= |c_ULTIMATE.start_main_~p~0#1.base| (select v_arrayElimArr_17 .cse0))) (= (let ((.cse1 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~t~0#1.base| v_arrayElimArr_18))) (select (select .cse1 (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~t~0#1.base| v_arrayElimArr_17) |c_ULTIMATE.start_main_~p~0#1.base|) .cse2)) (+ (select (select .cse1 |c_ULTIMATE.start_main_~p~0#1.base|) .cse2) 4))) 0) (not (= |c_ULTIMATE.start_main_~p~0#1.offset| (select v_arrayElimArr_18 .cse0))))) (forall ((v_arrayElimArr_15 (Array Int Int)) (v_arrayElimArr_16 (Array Int Int))) (or (not (= |c_ULTIMATE.start_main_~p~0#1.base| (select v_arrayElimArr_15 .cse0))) (= (select (let ((.cse3 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~t~0#1.base| v_arrayElimArr_15))) (select .cse3 (select (select .cse3 |c_ULTIMATE.start_main_~p~0#1.base|) .cse2))) (+ 4 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~t~0#1.base| v_arrayElimArr_16) |c_ULTIMATE.start_main_~p~0#1.base|) .cse2))) 0) (not (= |c_ULTIMATE.start_main_~p~0#1.offset| (select v_arrayElimArr_16 .cse0))))))) is different from false [2023-02-14 22:42:03,613 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-14 22:42:03,614 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 54 treesize of output 53 [2023-02-14 22:42:03,620 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-14 22:42:03,620 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 48 [2023-02-14 22:42:03,642 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-14 22:42:03,642 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 54 treesize of output 53 [2023-02-14 22:42:03,649 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-14 22:42:03,650 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 48 [2023-02-14 22:42:03,977 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-14 22:42:03,977 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 75 treesize of output 76 [2023-02-14 22:42:03,987 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-14 22:42:03,988 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 65 treesize of output 56 [2023-02-14 22:42:03,991 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-14 22:42:03,994 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 44 treesize of output 38 [2023-02-14 22:42:04,001 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-14 22:42:04,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 22:42:04,005 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 204 treesize of output 178 [2023-02-14 22:42:04,015 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-14 22:42:04,016 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 180 treesize of output 148 [2023-02-14 22:42:04,024 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-14 22:42:04,025 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 153 treesize of output 119 [2023-02-14 22:42:04,029 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 21 [2023-02-14 22:42:04,293 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-14 22:42:04,293 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 75 treesize of output 66 [2023-02-14 22:42:04,300 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-14 22:42:04,300 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 55 treesize of output 56 [2023-02-14 22:42:04,303 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-14 22:42:04,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 22:42:04,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 22:42:04,309 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 396 treesize of output 346 [2023-02-14 22:42:04,313 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-14 22:42:04,315 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 184 treesize of output 178 [2023-02-14 22:42:04,323 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-14 22:42:04,324 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 180 treesize of output 164 [2023-02-14 22:42:04,328 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 156 treesize of output 126 [2023-02-14 22:42:04,332 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 141 treesize of output 121 [2023-02-14 22:42:04,341 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-14 22:42:04,342 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 76 treesize of output 74 [2023-02-14 22:42:04,723 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 3 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 4 not checked. [2023-02-14 22:42:04,723 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1291589302] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-14 22:42:04,724 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-14 22:42:04,724 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 11, 11] total 29 [2023-02-14 22:42:04,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890512853] [2023-02-14 22:42:04,724 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-14 22:42:04,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-02-14 22:42:04,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 22:42:04,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-02-14 22:42:04,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=662, Unknown=3, NotChecked=52, Total=812 [2023-02-14 22:42:04,726 INFO L87 Difference]: Start difference. First operand 29 states and 30 transitions. Second operand has 29 states, 29 states have (on average 2.413793103448276) internal successors, (70), 29 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 22:42:05,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 22:42:05,656 INFO L93 Difference]: Finished difference Result 50 states and 52 transitions. [2023-02-14 22:42:05,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-02-14 22:42:05,657 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 2.413793103448276) internal successors, (70), 29 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2023-02-14 22:42:05,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 22:42:05,657 INFO L225 Difference]: With dead ends: 50 [2023-02-14 22:42:05,657 INFO L226 Difference]: Without dead ends: 35 [2023-02-14 22:42:05,658 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 297 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=178, Invalid=1155, Unknown=3, NotChecked=70, Total=1406 [2023-02-14 22:42:05,659 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 34 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 262 mSolverCounterSat, 8 mSolverCounterUnsat, 11 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 262 IncrementalHoareTripleChecker+Invalid, 11 IncrementalHoareTripleChecker+Unknown, 27 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-02-14 22:42:05,659 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 158 Invalid, 308 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 262 Invalid, 11 Unknown, 27 Unchecked, 0.4s Time] [2023-02-14 22:42:05,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2023-02-14 22:42:05,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 33. [2023-02-14 22:42:05,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 32 states have (on average 1.0625) internal successors, (34), 32 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 22:42:05,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 34 transitions. [2023-02-14 22:42:05,665 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 34 transitions. Word has length 28 [2023-02-14 22:42:05,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 22:42:05,665 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 34 transitions. [2023-02-14 22:42:05,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 2.413793103448276) internal successors, (70), 29 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 22:42:05,666 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 34 transitions. [2023-02-14 22:42:05,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-02-14 22:42:05,666 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 22:42:05,666 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1] [2023-02-14 22:42:05,676 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-02-14 22:42:05,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 22:42:05,873 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 22:42:05,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 22:42:05,873 INFO L85 PathProgramCache]: Analyzing trace with hash 605622946, now seen corresponding path program 6 times [2023-02-14 22:42:05,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 22:42:05,874 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471361129] [2023-02-14 22:42:05,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 22:42:05,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 22:42:05,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 22:42:07,411 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 12 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 22:42:07,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 22:42:07,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471361129] [2023-02-14 22:42:07,412 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1471361129] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-14 22:42:07,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1396053221] [2023-02-14 22:42:07,412 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-02-14 22:42:07,412 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 22:42:07,412 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 22:42:07,413 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) [2023-02-14 22:42:07,416 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-02-14 22:42:07,535 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2023-02-14 22:42:07,535 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-14 22:42:07,538 INFO L263 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 93 conjunts are in the unsatisfiable core [2023-02-14 22:42:07,542 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 22:42:07,547 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 6 treesize of output 5 [2023-02-14 22:42:07,557 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 15 [2023-02-14 22:42:07,588 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-02-14 22:42:07,589 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 17 treesize of output 21 [2023-02-14 22:42:07,648 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 [2023-02-14 22:42:07,660 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-02-14 22:42:07,666 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 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 [2023-02-14 22:42:07,773 INFO L321 Elim1Store]: treesize reduction 48, result has 36.0 percent of original size [2023-02-14 22:42:07,773 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 26 treesize of output 41 [2023-02-14 22:42:07,873 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 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 9 treesize of output 12 [2023-02-14 22:42:07,880 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 43 [2023-02-14 22:42:07,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 22:42:07,892 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 23 [2023-02-14 22:42:07,897 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 8 treesize of output 7 [2023-02-14 22:42:07,908 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 24 [2023-02-14 22:42:07,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 22:42:08,007 INFO L321 Elim1Store]: treesize reduction 12, result has 67.6 percent of original size [2023-02-14 22:42:08,007 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 37 [2023-02-14 22:42:08,109 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 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 9 treesize of output 12 [2023-02-14 22:42:08,126 INFO L321 Elim1Store]: treesize reduction 25, result has 16.7 percent of original size [2023-02-14 22:42:08,127 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 97 treesize of output 69 [2023-02-14 22:42:08,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 22:42:08,138 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 22:42:08,140 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 41 [2023-02-14 22:42:08,149 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 8 treesize of output 7 [2023-02-14 22:42:08,160 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2023-02-14 22:42:08,708 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-14 22:42:08,745 INFO L321 Elim1Store]: treesize reduction 79, result has 19.4 percent of original size [2023-02-14 22:42:08,745 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 9 new quantified variables, introduced 10 case distinctions, treesize of input 195 treesize of output 109 [2023-02-14 22:42:08,763 INFO L321 Elim1Store]: treesize reduction 10, result has 41.2 percent of original size [2023-02-14 22:42:08,764 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 2 case distinctions, treesize of input 52 treesize of output 36 [2023-02-14 22:42:08,818 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2023-02-14 22:42:08,821 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 12 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 22:42:08,821 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 22:42:09,060 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-14 22:42:09,061 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 94 treesize of output 88 [2023-02-14 22:42:09,068 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-14 22:42:09,068 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 79 treesize of output 73 [2023-02-14 22:42:09,281 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-14 22:42:09,282 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 131 treesize of output 125 [2023-02-14 22:42:09,291 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-14 22:42:09,291 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 116 treesize of output 110 [2023-02-14 22:42:09,503 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_arrayElimArr_32 (Array Int Int)) (v_arrayElimArr_29 (Array Int Int)) (v_ArrVal_485 (Array Int Int)) (v_ArrVal_476 (Array Int Int)) (v_arrayElimArr_31 (Array Int Int)) (|v_ULTIMATE.start_main_~t~0#1.base_21| Int) (v_arrayElimArr_30 (Array Int Int))) (let ((.cse0 (select v_arrayElimArr_29 4))) (let ((.cse2 (store (store |c_#memory_int| .cse0 v_ArrVal_476) |v_ULTIMATE.start_main_~t~0#1.base_21| v_ArrVal_485)) (.cse1 (select v_arrayElimArr_30 4))) (or (not (= (select v_arrayElimArr_31 4) |c_ULTIMATE.start_main_~p~0#1.base|)) (not (= (select (store |c_#valid| .cse0 1) |v_ULTIMATE.start_main_~t~0#1.base_21|) 0)) (not (= .cse1 0)) (not (= (select |c_#valid| .cse0) 0)) (not (= (select v_arrayElimArr_32 4) |c_ULTIMATE.start_main_~p~0#1.offset|)) (not (= (select (select .cse2 .cse0) .cse1) 1)) (= (let ((.cse6 (store (store |c_#memory_$Pointer$.offset| .cse0 v_arrayElimArr_32) |v_ULTIMATE.start_main_~t~0#1.base_21| v_arrayElimArr_30)) (.cse3 (store (store |c_#memory_$Pointer$.base| .cse0 v_arrayElimArr_31) |v_ULTIMATE.start_main_~t~0#1.base_21| v_arrayElimArr_29)) (.cse7 (+ .cse1 4))) (let ((.cse4 (select (select .cse3 .cse0) .cse7)) (.cse5 (+ (select (select .cse6 .cse0) .cse7) 4))) (select (select .cse2 (select (select .cse3 .cse4) .cse5)) (select (select .cse6 .cse4) .cse5)))) 1))))) is different from false [2023-02-14 22:42:09,556 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-14 22:42:09,556 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 178 treesize of output 159 [2023-02-14 22:42:09,567 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-14 22:42:09,568 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 148 treesize of output 129 [2023-02-14 22:42:09,573 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-14 22:42:09,580 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 22:42:09,581 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 22:42:09,584 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 400 treesize of output 364 [2023-02-14 22:42:09,598 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-14 22:42:09,599 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 402 treesize of output 338 [2023-02-14 22:42:09,622 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-14 22:42:09,628 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 22:42:09,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 22:42:09,630 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 842 treesize of output 764 [2023-02-14 22:42:09,643 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 22:42:09,653 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-14 22:42:09,654 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 766 treesize of output 664 [2023-02-14 22:42:09,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 22:42:09,676 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-14 22:42:09,677 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 640 treesize of output 452 [2023-02-14 22:42:09,691 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-14 22:42:09,691 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 483 treesize of output 451