./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 eb692b52 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/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-?-eb692b5 [2022-07-19 14:24:25,308 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 14:24:25,310 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 14:24:25,342 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 14:24:25,343 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 14:24:25,344 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 14:24:25,346 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 14:24:25,350 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 14:24:25,352 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 14:24:25,356 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 14:24:25,357 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 14:24:25,359 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 14:24:25,360 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 14:24:25,362 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 14:24:25,363 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 14:24:25,366 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 14:24:25,367 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 14:24:25,369 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 14:24:25,370 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 14:24:25,375 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 14:24:25,377 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 14:24:25,378 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 14:24:25,378 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 14:24:25,379 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 14:24:25,381 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 14:24:25,386 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 14:24:25,386 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 14:24:25,387 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 14:24:25,388 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 14:24:25,389 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 14:24:25,390 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 14:24:25,390 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 14:24:25,391 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 14:24:25,393 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 14:24:25,393 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 14:24:25,394 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 14:24:25,395 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 14:24:25,395 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 14:24:25,395 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 14:24:25,396 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 14:24:25,396 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 14:24:25,398 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 14:24:25,399 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-19 14:24:25,435 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 14:24:25,438 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 14:24:25,438 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 14:24:25,438 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 14:24:25,439 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 14:24:25,439 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 14:24:25,440 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 14:24:25,440 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 14:24:25,440 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 14:24:25,441 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 14:24:25,441 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-19 14:24:25,442 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 14:24:25,442 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-19 14:24:25,442 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 14:24:25,442 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 14:24:25,442 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 14:24:25,442 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 14:24:25,443 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-19 14:24:25,443 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 14:24:25,443 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 14:24:25,443 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 14:24:25,443 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 14:24:25,445 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 14:24:25,445 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 14:24:25,446 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 14:24:25,446 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 14:24:25,446 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 14:24:25,446 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 14:24:25,446 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 14:24:25,447 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 14:24:25,447 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 14:24:25,447 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 14:24:25,447 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 14:24:25,447 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0eb3d3e07cae1efa9dc9af5091aea6a309746434756c62bcf3ece83b84aec27a [2022-07-19 14:24:25,694 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 14:24:25,716 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 14:24:25,719 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 14:24:25,721 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 14:24:25,721 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 14:24:25,722 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/list-properties/simple_built_from_end.i [2022-07-19 14:24:25,788 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ddfbab523/460f1e4b3ba1442c81f7ce6e9e4ee039/FLAG951b30bde [2022-07-19 14:24:26,270 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 14:24:26,279 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-properties/simple_built_from_end.i [2022-07-19 14:24:26,296 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ddfbab523/460f1e4b3ba1442c81f7ce6e9e4ee039/FLAG951b30bde [2022-07-19 14:24:26,601 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ddfbab523/460f1e4b3ba1442c81f7ce6e9e4ee039 [2022-07-19 14:24:26,603 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 14:24:26,605 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 14:24:26,607 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 14:24:26,608 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 14:24:26,610 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 14:24:26,610 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 02:24:26" (1/1) ... [2022-07-19 14:24:26,611 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@925ea80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 02:24:26, skipping insertion in model container [2022-07-19 14:24:26,612 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 02:24:26" (1/1) ... [2022-07-19 14:24:26,618 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 14:24:26,643 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 14:24:26,844 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-properties/simple_built_from_end.i[23125,23138] [2022-07-19 14:24:26,848 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 14:24:26,859 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 14:24:26,909 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-properties/simple_built_from_end.i[23125,23138] [2022-07-19 14:24:26,911 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 14:24:26,936 INFO L208 MainTranslator]: Completed translation [2022-07-19 14:24:26,937 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 02:24:26 WrapperNode [2022-07-19 14:24:26,937 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 14:24:26,938 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 14:24:26,938 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 14:24:26,938 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 14:24:26,945 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 02:24:26" (1/1) ... [2022-07-19 14:24:26,955 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 02:24:26" (1/1) ... [2022-07-19 14:24:26,973 INFO L137 Inliner]: procedures = 124, calls = 12, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 43 [2022-07-19 14:24:26,974 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 14:24:26,974 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 14:24:26,974 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 14:24:26,975 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 14:24:26,980 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 02:24:26" (1/1) ... [2022-07-19 14:24:26,980 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 02:24:26" (1/1) ... [2022-07-19 14:24:26,983 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 02:24:26" (1/1) ... [2022-07-19 14:24:26,983 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 02:24:26" (1/1) ... [2022-07-19 14:24:26,987 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 02:24:26" (1/1) ... [2022-07-19 14:24:26,990 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 02:24:26" (1/1) ... [2022-07-19 14:24:26,992 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 02:24:26" (1/1) ... [2022-07-19 14:24:26,994 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 14:24:26,994 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 14:24:26,994 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 14:24:26,995 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 14:24:26,996 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 02:24:26" (1/1) ... [2022-07-19 14:24:27,002 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 14:24:27,011 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 14:24:27,022 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-19 14:24:27,032 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-19 14:24:27,062 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-19 14:24:27,063 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-19 14:24:27,063 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-19 14:24:27,063 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 14:24:27,063 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-19 14:24:27,063 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-19 14:24:27,063 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 14:24:27,063 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 14:24:27,064 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 14:24:27,133 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 14:24:27,134 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 14:24:27,266 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 14:24:27,272 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 14:24:27,272 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-07-19 14:24:27,274 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 02:24:27 BoogieIcfgContainer [2022-07-19 14:24:27,274 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 14:24:27,276 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 14:24:27,276 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 14:24:27,282 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 14:24:27,283 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 02:24:26" (1/3) ... [2022-07-19 14:24:27,284 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e68dd1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 02:24:27, skipping insertion in model container [2022-07-19 14:24:27,284 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 02:24:26" (2/3) ... [2022-07-19 14:24:27,292 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e68dd1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 02:24:27, skipping insertion in model container [2022-07-19 14:24:27,292 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 02:24:27" (3/3) ... [2022-07-19 14:24:27,294 INFO L111 eAbstractionObserver]: Analyzing ICFG simple_built_from_end.i [2022-07-19 14:24:27,308 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 14:24:27,308 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-19 14:24:27,346 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 14:24:27,352 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@28a9c8ee, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@5b8b5e6a [2022-07-19 14:24:27,352 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-19 14:24:27,356 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) [2022-07-19 14:24:27,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-07-19 14:24:27,362 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 14:24:27,363 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-07-19 14:24:27,363 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 14:24:27,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 14:24:27,368 INFO L85 PathProgramCache]: Analyzing trace with hash 890037006, now seen corresponding path program 1 times [2022-07-19 14:24:27,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 14:24:27,374 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407896392] [2022-07-19 14:24:27,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 14:24:27,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 14:24:27,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 14:24:27,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 14:24:27,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 14:24:27,469 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407896392] [2022-07-19 14:24:27,469 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1407896392] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 14:24:27,469 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 14:24:27,470 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-19 14:24:27,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337694102] [2022-07-19 14:24:27,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 14:24:27,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-19 14:24:27,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 14:24:27,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-19 14:24:27,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-19 14:24:27,507 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) [2022-07-19 14:24:27,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 14:24:27,520 INFO L93 Difference]: Finished difference Result 23 states and 30 transitions. [2022-07-19 14:24:27,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-19 14:24:27,524 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 [2022-07-19 14:24:27,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 14:24:27,530 INFO L225 Difference]: With dead ends: 23 [2022-07-19 14:24:27,531 INFO L226 Difference]: Without dead ends: 11 [2022-07-19 14:24:27,534 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-19 14:24:27,539 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 [2022-07-19 14:24:27,540 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] [2022-07-19 14:24:27,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2022-07-19 14:24:27,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2022-07-19 14:24:27,562 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) [2022-07-19 14:24:27,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 12 transitions. [2022-07-19 14:24:27,564 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 12 transitions. Word has length 6 [2022-07-19 14:24:27,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 14:24:27,565 INFO L495 AbstractCegarLoop]: Abstraction has 11 states and 12 transitions. [2022-07-19 14:24:27,565 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) [2022-07-19 14:24:27,565 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 12 transitions. [2022-07-19 14:24:27,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-07-19 14:24:27,566 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 14:24:27,566 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-07-19 14:24:27,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-19 14:24:27,567 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 14:24:27,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 14:24:27,567 INFO L85 PathProgramCache]: Analyzing trace with hash 1806862075, now seen corresponding path program 1 times [2022-07-19 14:24:27,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 14:24:27,568 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839184714] [2022-07-19 14:24:27,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 14:24:27,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 14:24:27,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 14:24:27,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 14:24:27,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 14:24:27,645 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839184714] [2022-07-19 14:24:27,645 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1839184714] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 14:24:27,648 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 14:24:27,648 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 14:24:27,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655795263] [2022-07-19 14:24:27,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 14:24:27,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 14:24:27,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 14:24:27,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 14:24:27,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 14:24:27,653 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) [2022-07-19 14:24:27,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 14:24:27,666 INFO L93 Difference]: Finished difference Result 21 states and 23 transitions. [2022-07-19 14:24:27,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 14:24:27,667 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 [2022-07-19 14:24:27,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 14:24:27,668 INFO L225 Difference]: With dead ends: 21 [2022-07-19 14:24:27,668 INFO L226 Difference]: Without dead ends: 15 [2022-07-19 14:24:27,668 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 [2022-07-19 14:24:27,670 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 [2022-07-19 14:24:27,670 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] [2022-07-19 14:24:27,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2022-07-19 14:24:27,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 13. [2022-07-19 14:24:27,673 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) [2022-07-19 14:24:27,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2022-07-19 14:24:27,674 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 7 [2022-07-19 14:24:27,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 14:24:27,674 INFO L495 AbstractCegarLoop]: Abstraction has 13 states and 14 transitions. [2022-07-19 14:24:27,674 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) [2022-07-19 14:24:27,675 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2022-07-19 14:24:27,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-07-19 14:24:27,675 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 14:24:27,675 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 14:24:27,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-19 14:24:27,676 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 14:24:27,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 14:24:27,676 INFO L85 PathProgramCache]: Analyzing trace with hash -1217762572, now seen corresponding path program 1 times [2022-07-19 14:24:27,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 14:24:27,677 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762923438] [2022-07-19 14:24:27,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 14:24:27,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 14:24:27,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 14:24:27,800 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 14:24:27,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 14:24:27,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762923438] [2022-07-19 14:24:27,803 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1762923438] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 14:24:27,803 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 14:24:27,803 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 14:24:27,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447844660] [2022-07-19 14:24:27,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 14:24:27,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 14:24:27,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 14:24:27,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 14:24:27,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 14:24:27,807 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) [2022-07-19 14:24:27,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 14:24:27,850 INFO L93 Difference]: Finished difference Result 20 states and 21 transitions. [2022-07-19 14:24:27,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 14:24:27,851 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 [2022-07-19 14:24:27,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 14:24:27,852 INFO L225 Difference]: With dead ends: 20 [2022-07-19 14:24:27,852 INFO L226 Difference]: Without dead ends: 18 [2022-07-19 14:24:27,852 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 14:24:27,854 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 3 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 14:24:27,854 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 28 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 14:24:27,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2022-07-19 14:24:27,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 15. [2022-07-19 14:24:27,857 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) [2022-07-19 14:24:27,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2022-07-19 14:24:27,857 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 11 [2022-07-19 14:24:27,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 14:24:27,858 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2022-07-19 14:24:27,858 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) [2022-07-19 14:24:27,858 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2022-07-19 14:24:27,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-07-19 14:24:27,859 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 14:24:27,859 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 14:24:27,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-19 14:24:27,859 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 14:24:27,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 14:24:27,860 INFO L85 PathProgramCache]: Analyzing trace with hash 1228764301, now seen corresponding path program 1 times [2022-07-19 14:24:27,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 14:24:27,861 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092542657] [2022-07-19 14:24:27,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 14:24:27,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 14:24:27,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 14:24:28,046 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 14:24:28,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 14:24:28,048 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092542657] [2022-07-19 14:24:28,048 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2092542657] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 14:24:28,048 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1821264] [2022-07-19 14:24:28,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 14:24:28,049 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 14:24:28,049 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 14:24:28,051 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 14:24:28,052 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-19 14:24:28,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 14:24:28,145 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 23 conjunts are in the unsatisfiable core [2022-07-19 14:24:28,155 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 14:24:28,245 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-07-19 14:24:28,259 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-07-19 14:24:28,344 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-07-19 14:24:28,349 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-07-19 14:24:28,363 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 14:24:28,364 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 14:24:28,478 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 14:24:28,478 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1821264] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 14:24:28,478 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-19 14:24:28,479 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 6 [2022-07-19 14:24:28,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734645859] [2022-07-19 14:24:28,479 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-19 14:24:28,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 14:24:28,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 14:24:28,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 14:24:28,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-19 14:24:28,481 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) [2022-07-19 14:24:28,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 14:24:28,525 INFO L93 Difference]: Finished difference Result 30 states and 32 transitions. [2022-07-19 14:24:28,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 14:24:28,526 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 [2022-07-19 14:24:28,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 14:24:28,527 INFO L225 Difference]: With dead ends: 30 [2022-07-19 14:24:28,527 INFO L226 Difference]: Without dead ends: 21 [2022-07-19 14:24:28,528 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-19 14:24:28,533 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 2 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 14:24:28,534 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 40 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 14:24:28,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2022-07-19 14:24:28,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 19. [2022-07-19 14:24:28,543 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) [2022-07-19 14:24:28,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2022-07-19 14:24:28,544 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 14 [2022-07-19 14:24:28,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 14:24:28,545 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2022-07-19 14:24:28,545 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) [2022-07-19 14:24:28,545 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2022-07-19 14:24:28,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-07-19 14:24:28,546 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 14:24:28,547 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 14:24:28,579 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-19 14:24:28,764 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 [2022-07-19 14:24:28,764 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 14:24:28,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 14:24:28,765 INFO L85 PathProgramCache]: Analyzing trace with hash 1718933108, now seen corresponding path program 2 times [2022-07-19 14:24:28,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 14:24:28,765 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926754767] [2022-07-19 14:24:28,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 14:24:28,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 14:24:28,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 14:24:28,921 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 14:24:28,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 14:24:28,921 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926754767] [2022-07-19 14:24:28,922 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1926754767] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 14:24:28,922 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2074834382] [2022-07-19 14:24:28,922 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-19 14:24:28,923 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 14:24:28,923 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 14:24:28,928 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 14:24:28,941 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-19 14:24:29,002 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-19 14:24:29,003 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-19 14:24:29,004 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 37 conjunts are in the unsatisfiable core [2022-07-19 14:24:29,009 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 14:24:29,025 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-19 14:24:29,052 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-07-19 14:24:29,081 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-07-19 14:24:29,086 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-07-19 14:24:29,142 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-07-19 14:24:29,148 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-07-19 14:24:29,157 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-07-19 14:24:29,216 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2022-07-19 14:24:29,220 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-07-19 14:24:29,234 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-07-19 14:24:29,236 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 14:24:29,236 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 14:24:29,272 WARN L833 $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 [2022-07-19 14:24:29,289 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_102 (Array Int Int)) (|v_ULTIMATE.start_main_~t~0#1.base_9| Int)) (or (not (= 0 (select |c_#valid| |v_ULTIMATE.start_main_~t~0#1.base_9|))) (= (select (select (store |c_#memory_int| |v_ULTIMATE.start_main_~t~0#1.base_9| v_ArrVal_102) |c_ULTIMATE.start_main_~p~0#1.base|) |c_ULTIMATE.start_main_~p~0#1.offset|) 1))) is different from false [2022-07-19 14:24:29,315 INFO L356 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-07-19 14:24:29,316 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 23 treesize of output 29 [2022-07-19 14:24:29,321 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2022-07-19 14:24:29,324 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-07-19 14:24:29,338 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 4 not checked. [2022-07-19 14:24:29,338 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2074834382] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 14:24:29,339 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-19 14:24:29,339 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 14 [2022-07-19 14:24:29,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674347580] [2022-07-19 14:24:29,339 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-19 14:24:29,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-19 14:24:29,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 14:24:29,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-19 14:24:29,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=104, Unknown=2, NotChecked=42, Total=182 [2022-07-19 14:24:29,341 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) [2022-07-19 14:24:29,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 14:24:29,605 INFO L93 Difference]: Finished difference Result 27 states and 28 transitions. [2022-07-19 14:24:29,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-19 14:24:29,606 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 [2022-07-19 14:24:29,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 14:24:29,607 INFO L225 Difference]: With dead ends: 27 [2022-07-19 14:24:29,607 INFO L226 Difference]: Without dead ends: 25 [2022-07-19 14:24:29,611 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 32 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=108, Invalid=240, Unknown=2, NotChecked=70, Total=420 [2022-07-19 14:24:29,613 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 29 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 33 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 14:24:29,614 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 47 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 72 Invalid, 0 Unknown, 33 Unchecked, 0.1s Time] [2022-07-19 14:24:29,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2022-07-19 14:24:29,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 22. [2022-07-19 14:24:29,621 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) [2022-07-19 14:24:29,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2022-07-19 14:24:29,622 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 18 [2022-07-19 14:24:29,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 14:24:29,622 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2022-07-19 14:24:29,623 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) [2022-07-19 14:24:29,623 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2022-07-19 14:24:29,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-07-19 14:24:29,624 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 14:24:29,624 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2022-07-19 14:24:29,651 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-19 14:24:29,843 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 [2022-07-19 14:24:29,844 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 14:24:29,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 14:24:29,844 INFO L85 PathProgramCache]: Analyzing trace with hash -154052339, now seen corresponding path program 3 times [2022-07-19 14:24:29,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 14:24:29,844 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554711494] [2022-07-19 14:24:29,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 14:24:29,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 14:24:29,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 14:24:30,069 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 14:24:30,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 14:24:30,070 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554711494] [2022-07-19 14:24:30,070 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1554711494] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 14:24:30,070 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1528728059] [2022-07-19 14:24:30,070 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-19 14:24:30,070 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 14:24:30,070 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 14:24:30,072 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 14:24:30,074 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-19 14:24:30,141 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-07-19 14:24:30,142 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-19 14:24:30,144 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 48 conjunts are in the unsatisfiable core [2022-07-19 14:24:30,147 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 14:24:30,157 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-19 14:24:30,176 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-07-19 14:24:30,180 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-07-19 14:24:30,202 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-07-19 14:24:30,203 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-07-19 14:24:30,231 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-07-19 14:24:30,236 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-07-19 14:24:30,239 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 23 [2022-07-19 14:24:30,244 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-07-19 14:24:30,379 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-19 14:24:30,385 INFO L356 Elim1Store]: treesize reduction 17, result has 15.0 percent of original size [2022-07-19 14:24:30,386 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-07-19 14:24:30,396 INFO L356 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-07-19 14:24:30,396 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-07-19 14:24:30,401 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 14:24:30,402 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 14:24:30,474 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-19 14:24:30,474 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 21 [2022-07-19 14:24:30,482 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-19 14:24:30,483 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 21 [2022-07-19 14:24:30,490 WARN L833 $PredicateComparison]: unable to prove that (and (forall ((v_arrayElimArr_3 (Array Int Int))) (or (= (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~t~0#1.base| v_arrayElimArr_3) |c_ULTIMATE.start_main_~p~0#1.base|) (+ |c_ULTIMATE.start_main_~p~0#1.offset| 4)) 0) (not (= (select v_arrayElimArr_3 (+ |c_ULTIMATE.start_main_~t~0#1.offset| 4)) |c_ULTIMATE.start_main_~p~0#1.offset|)))) (forall ((v_arrayElimArr_4 (Array Int Int))) (or (not (= (select v_arrayElimArr_4 (+ |c_ULTIMATE.start_main_~t~0#1.offset| 4)) |c_ULTIMATE.start_main_~p~0#1.base|)) (= (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~t~0#1.base| v_arrayElimArr_4) |c_ULTIMATE.start_main_~p~0#1.base|) (+ |c_ULTIMATE.start_main_~p~0#1.offset| 4)) 0)))) is different from false [2022-07-19 14:24:30,549 WARN L833 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~t~0#1.base_11| Int)) (or (not (= (select |c_#valid| |v_ULTIMATE.start_main_~t~0#1.base_11|) 0)) (and (forall ((v_arrayElimArr_3 (Array Int Int))) (or (= (select (select (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_main_~t~0#1.base_11| v_arrayElimArr_3) |c_ULTIMATE.start_main_~p~0#1.base|) (+ |c_ULTIMATE.start_main_~p~0#1.offset| 4)) 0) (not (= |c_ULTIMATE.start_main_~p~0#1.offset| (select v_arrayElimArr_3 4))))) (forall ((v_arrayElimArr_4 (Array Int Int))) (or (= (select (select (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_main_~t~0#1.base_11| v_arrayElimArr_4) |c_ULTIMATE.start_main_~p~0#1.base|) (+ |c_ULTIMATE.start_main_~p~0#1.offset| 4)) 0) (not (= (select v_arrayElimArr_4 4) |c_ULTIMATE.start_main_~p~0#1.base|))))))) is different from false [2022-07-19 14:24:30,607 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-19 14:24:30,608 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 23 [2022-07-19 14:24:30,612 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 24 [2022-07-19 14:24:30,618 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-19 14:24:30,619 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 22 [2022-07-19 14:24:30,634 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-19 14:24:30,635 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 23 [2022-07-19 14:24:30,639 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 24 [2022-07-19 14:24:30,648 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-19 14:24:30,652 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 22 [2022-07-19 14:24:30,801 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 6 not checked. [2022-07-19 14:24:30,801 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1528728059] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 14:24:30,801 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-19 14:24:30,801 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2022-07-19 14:24:30,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096019436] [2022-07-19 14:24:30,802 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-19 14:24:30,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-07-19 14:24:30,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 14:24:30,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-07-19 14:24:30,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=123, Unknown=2, NotChecked=46, Total=210 [2022-07-19 14:24:30,806 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) [2022-07-19 14:24:31,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 14:24:31,536 INFO L93 Difference]: Finished difference Result 40 states and 42 transitions. [2022-07-19 14:24:31,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-19 14:24:31,540 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 [2022-07-19 14:24:31,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 14:24:31,541 INFO L225 Difference]: With dead ends: 40 [2022-07-19 14:24:31,541 INFO L226 Difference]: Without dead ends: 28 [2022-07-19 14:24:31,541 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 35 SyntacticMatches, 3 SemanticMatches, 14 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=45, Invalid=142, Unknown=3, NotChecked=50, Total=240 [2022-07-19 14:24:31,542 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 5 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 49 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 14:24:31,542 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 74 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 33 Invalid, 0 Unknown, 49 Unchecked, 0.0s Time] [2022-07-19 14:24:31,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2022-07-19 14:24:31,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 26. [2022-07-19 14:24:31,545 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) [2022-07-19 14:24:31,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 27 transitions. [2022-07-19 14:24:31,545 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 27 transitions. Word has length 21 [2022-07-19 14:24:31,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 14:24:31,545 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 27 transitions. [2022-07-19 14:24:31,546 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) [2022-07-19 14:24:31,546 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 27 transitions. [2022-07-19 14:24:31,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-07-19 14:24:31,546 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 14:24:31,546 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1] [2022-07-19 14:24:31,577 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-19 14:24:31,759 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 [2022-07-19 14:24:31,760 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 14:24:31,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 14:24:31,760 INFO L85 PathProgramCache]: Analyzing trace with hash -336964282, now seen corresponding path program 4 times [2022-07-19 14:24:31,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 14:24:31,760 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626336704] [2022-07-19 14:24:31,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 14:24:31,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 14:24:31,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 14:24:32,099 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 8 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 14:24:32,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 14:24:32,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626336704] [2022-07-19 14:24:32,099 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1626336704] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 14:24:32,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [947980306] [2022-07-19 14:24:32,100 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-07-19 14:24:32,100 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 14:24:32,100 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 14:24:32,113 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 14:24:32,178 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-19 14:24:32,249 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-07-19 14:24:32,250 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-19 14:24:32,252 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 67 conjunts are in the unsatisfiable core [2022-07-19 14:24:32,256 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 14:24:32,260 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-19 14:24:32,274 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-07-19 14:24:32,301 INFO L356 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-07-19 14:24:32,302 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-07-19 14:24:32,343 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-07-19 14:24:32,347 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-07-19 14:24:32,354 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-07-19 14:24:32,405 INFO L356 Elim1Store]: treesize reduction 8, result has 61.9 percent of original size [2022-07-19 14:24:32,405 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-07-19 14:24:32,465 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-07-19 14:24:32,471 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-07-19 14:24:32,476 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 36 [2022-07-19 14:24:32,480 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-07-19 14:24:32,485 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-07-19 14:24:32,722 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-19 14:24:32,732 INFO L356 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2022-07-19 14:24:32,732 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-07-19 14:24:32,741 INFO L356 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-07-19 14:24:32,742 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 18 [2022-07-19 14:24:32,782 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2022-07-19 14:24:32,785 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 8 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 14:24:32,785 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 14:24:32,904 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-19 14:24:32,905 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 42 [2022-07-19 14:24:32,911 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-19 14:24:32,911 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 37 [2022-07-19 14:24:33,055 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-19 14:24:33,056 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 55 treesize of output 56 [2022-07-19 14:24:33,062 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 14:24:33,063 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-07-19 14:24:33,072 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-19 14:24:33,072 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 84 treesize of output 74 [2022-07-19 14:24:33,085 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-19 14:24:33,085 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 45 [2022-07-19 14:24:33,092 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 14:24:33,093 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-07-19 14:24:33,107 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-19 14:24:33,108 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 112 treesize of output 110 [2022-07-19 14:24:34,179 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 1 [2022-07-19 14:24:34,320 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_256 (Array Int Int))) (or (and (or (not (= (select |c_#valid| |c_ULTIMATE.start_main_~t~0#1.base|) 0)) (let ((.cse0 (= |c_ULTIMATE.start_main_~t~0#1.offset| 0))) (and (or (and (forall ((v_arrayElimCell_49 Int)) (= (select v_ArrVal_256 v_arrayElimCell_49) 1)) (forall ((v_arrayElimCell_46 Int) (v_arrayElimCell_49 Int)) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~t~0#1.base| v_ArrVal_256) v_arrayElimCell_46) v_arrayElimCell_49) 1))) .cse0) (or .cse0 (forall ((v_arrayElimCell_46 Int)) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~t~0#1.base| v_ArrVal_256) v_arrayElimCell_46) |c_ULTIMATE.start_main_~t~0#1.offset|) 1))) (= (select v_ArrVal_256 |c_ULTIMATE.start_main_~t~0#1.offset|) 1)))) (forall ((|v_ULTIMATE.start_main_~t~0#1.base_14| Int) (v_ArrVal_255 (Array Int Int))) (or (let ((.cse1 (= |c_ULTIMATE.start_main_~t~0#1.offset| 0))) (and (or (forall ((v_arrayElimCell_46 Int)) (= (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~t~0#1.base| v_ArrVal_255) |v_ULTIMATE.start_main_~t~0#1.base_14| v_ArrVal_256) v_arrayElimCell_46) |c_ULTIMATE.start_main_~t~0#1.offset|) 1)) .cse1) (or .cse1 (and (forall ((v_arrayElimCell_46 Int) (v_arrayElimCell_49 Int)) (= (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~t~0#1.base| v_ArrVal_255) |v_ULTIMATE.start_main_~t~0#1.base_14| v_ArrVal_256) v_arrayElimCell_46) v_arrayElimCell_49) 1)) (forall ((v_arrayElimCell_49 Int)) (= (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~t~0#1.base| v_ArrVal_255) |v_ULTIMATE.start_main_~t~0#1.base_14| v_ArrVal_256) |c_ULTIMATE.start_main_~t~0#1.base|) v_arrayElimCell_49) 1)))) (= |v_ULTIMATE.start_main_~t~0#1.base_14| |c_ULTIMATE.start_main_~t~0#1.base|))) (not (= (select |c_#valid| |v_ULTIMATE.start_main_~t~0#1.base_14|) 0)) (= (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~t~0#1.base| v_ArrVal_255) |v_ULTIMATE.start_main_~t~0#1.base_14| v_ArrVal_256) |c_ULTIMATE.start_main_~p~0#1.base|) |c_ULTIMATE.start_main_~p~0#1.offset|) 1)))) (not (= (select v_ArrVal_256 0) 1)))) is different from false [2022-07-19 14:24:34,894 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 1 [2022-07-19 14:24:35,089 WARN L833 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~t~0#1.base_15| Int) (v_ArrVal_256 (Array Int Int))) (or (not (= (select |c_#valid| |v_ULTIMATE.start_main_~t~0#1.base_15|) 0)) (not (= (select v_ArrVal_256 0) 1)) (forall ((|v_ULTIMATE.start_main_~t~0#1.base_14| Int) (v_ArrVal_255 (Array Int Int))) (or (not (= (select (store |c_#valid| |v_ULTIMATE.start_main_~t~0#1.base_15| 1) |v_ULTIMATE.start_main_~t~0#1.base_14|) 0)) (= (select (select (store (store |c_#memory_int| |v_ULTIMATE.start_main_~t~0#1.base_15| v_ArrVal_255) |v_ULTIMATE.start_main_~t~0#1.base_14| v_ArrVal_256) |c_ULTIMATE.start_main_~p~0#1.base|) |c_ULTIMATE.start_main_~p~0#1.offset|) 1))))) is different from false [2022-07-19 14:24:35,119 INFO L356 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-07-19 14:24:35,120 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 32 [2022-07-19 14:24:35,124 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 52 [2022-07-19 14:24:35,129 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 22 [2022-07-19 14:24:35,135 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-19 14:24:35,136 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 44 treesize of output 46 [2022-07-19 14:24:35,206 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 6 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 8 not checked. [2022-07-19 14:24:35,206 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [947980306] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 14:24:35,207 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-19 14:24:35,207 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 31 [2022-07-19 14:24:35,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672278236] [2022-07-19 14:24:35,207 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-19 14:24:35,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-07-19 14:24:35,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 14:24:35,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-07-19 14:24:35,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=677, Unknown=16, NotChecked=110, Total=930 [2022-07-19 14:24:35,210 INFO L87 Difference]: Start difference. First operand 26 states and 27 transitions. Second operand has 31 states, 31 states have (on average 1.967741935483871) internal successors, (61), 31 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 14:24:39,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 14:24:39,984 INFO L93 Difference]: Finished difference Result 33 states and 34 transitions. [2022-07-19 14:24:39,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-19 14:24:39,984 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 1.967741935483871) internal successors, (61), 31 states have internal predecessors, (61), 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 [2022-07-19 14:24:39,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 14:24:39,985 INFO L225 Difference]: With dead ends: 33 [2022-07-19 14:24:39,985 INFO L226 Difference]: Without dead ends: 31 [2022-07-19 14:24:39,986 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 35 SyntacticMatches, 6 SemanticMatches, 39 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 357 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=290, Invalid=1180, Unknown=20, NotChecked=150, Total=1640 [2022-07-19 14:24:39,986 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 53 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 101 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 14:24:39,986 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 95 Invalid, 218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 95 Invalid, 0 Unknown, 101 Unchecked, 0.1s Time] [2022-07-19 14:24:39,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-07-19 14:24:39,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 29. [2022-07-19 14:24:39,990 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) [2022-07-19 14:24:39,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 30 transitions. [2022-07-19 14:24:39,991 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 30 transitions. Word has length 25 [2022-07-19 14:24:39,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 14:24:39,992 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 30 transitions. [2022-07-19 14:24:39,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 1.967741935483871) internal successors, (61), 31 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 14:24:39,992 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 30 transitions. [2022-07-19 14:24:39,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-07-19 14:24:39,993 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 14:24:39,993 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1] [2022-07-19 14:24:40,019 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-19 14:24:40,215 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 [2022-07-19 14:24:40,215 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 14:24:40,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 14:24:40,216 INFO L85 PathProgramCache]: Analyzing trace with hash -1159556869, now seen corresponding path program 5 times [2022-07-19 14:24:40,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 14:24:40,216 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290957062] [2022-07-19 14:24:40,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 14:24:40,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 14:24:40,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 14:24:40,652 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 14:24:40,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 14:24:40,653 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290957062] [2022-07-19 14:24:40,653 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [290957062] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 14:24:40,653 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [848448148] [2022-07-19 14:24:40,653 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-07-19 14:24:40,653 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 14:24:40,654 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 14:24:40,656 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 14:24:40,660 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-19 14:24:40,789 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-07-19 14:24:40,789 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-19 14:24:40,791 INFO L263 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 73 conjunts are in the unsatisfiable core [2022-07-19 14:24:40,794 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 14:24:40,808 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-19 14:24:40,825 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-07-19 14:24:40,832 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-07-19 14:24:40,856 INFO L356 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-07-19 14:24:40,856 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-07-19 14:24:40,914 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-07-19 14:24:40,918 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-07-19 14:24:40,921 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 23 [2022-07-19 14:24:40,925 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-07-19 14:24:40,986 INFO L356 Elim1Store]: treesize reduction 8, result has 61.9 percent of original size [2022-07-19 14:24:40,986 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-07-19 14:24:41,042 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-07-19 14:24:41,047 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 37 [2022-07-19 14:24:41,058 INFO L356 Elim1Store]: treesize reduction 25, result has 16.7 percent of original size [2022-07-19 14:24:41,058 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 55 treesize of output 51 [2022-07-19 14:24:41,064 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-07-19 14:24:41,304 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-19 14:24:41,323 INFO L356 Elim1Store]: treesize reduction 87, result has 11.2 percent of original size [2022-07-19 14:24:41,323 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-07-19 14:24:41,336 INFO L356 Elim1Store]: treesize reduction 10, result has 41.2 percent of original size [2022-07-19 14:24:41,336 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-07-19 14:24:41,340 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 3 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 14:24:41,340 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 14:24:41,433 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-19 14:24:41,434 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 44 [2022-07-19 14:24:41,437 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-19 14:24:41,438 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 39 [2022-07-19 14:24:41,446 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-19 14:24:41,446 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 49 [2022-07-19 14:24:41,449 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-19 14:24:41,450 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 39 [2022-07-19 14:24:41,457 WARN L833 $PredicateComparison]: unable to prove that (and (forall ((v_arrayElimArr_17 (Array Int Int)) (v_arrayElimArr_18 (Array Int Int))) (let ((.cse0 (+ |c_ULTIMATE.start_main_~t~0#1.offset| 4))) (or (not (= |c_ULTIMATE.start_main_~p~0#1.base| (select v_arrayElimArr_17 .cse0))) (= (let ((.cse1 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~t~0#1.base| v_arrayElimArr_18)) (.cse2 (+ |c_ULTIMATE.start_main_~p~0#1.offset| 4))) (select (select .cse1 (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~t~0#1.base| v_arrayElimArr_17) |c_ULTIMATE.start_main_~p~0#1.base|) .cse2)) (+ (select (select .cse1 |c_ULTIMATE.start_main_~p~0#1.base|) .cse2) 4))) 0) (not (= |c_ULTIMATE.start_main_~p~0#1.offset| (select v_arrayElimArr_18 .cse0)))))) (forall ((v_arrayElimArr_15 (Array Int Int)) (v_arrayElimArr_16 (Array Int Int))) (let ((.cse3 (+ |c_ULTIMATE.start_main_~t~0#1.offset| 4))) (or (not (= |c_ULTIMATE.start_main_~p~0#1.base| (select v_arrayElimArr_15 .cse3))) (= (let ((.cse5 (+ |c_ULTIMATE.start_main_~p~0#1.offset| 4))) (select (let ((.cse4 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~t~0#1.base| v_arrayElimArr_15))) (select .cse4 (select (select .cse4 |c_ULTIMATE.start_main_~p~0#1.base|) .cse5))) (+ 4 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~t~0#1.base| v_arrayElimArr_16) |c_ULTIMATE.start_main_~p~0#1.base|) .cse5)))) 0) (not (= |c_ULTIMATE.start_main_~p~0#1.offset| (select v_arrayElimArr_16 .cse3))))))) is different from false [2022-07-19 14:24:41,592 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-19 14:24:41,593 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 54 treesize of output 53 [2022-07-19 14:24:41,597 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-19 14:24:41,598 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 48 [2022-07-19 14:24:41,617 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-19 14:24:41,617 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 54 treesize of output 53 [2022-07-19 14:24:41,624 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-19 14:24:41,625 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 48 [2022-07-19 14:24:41,783 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-19 14:24:41,783 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 54 treesize of output 53 [2022-07-19 14:24:41,789 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-19 14:24:41,789 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 48 [2022-07-19 14:24:41,806 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-19 14:24:41,807 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 54 treesize of output 53 [2022-07-19 14:24:41,824 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-19 14:24:41,824 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 48 [2022-07-19 14:24:41,906 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-19 14:24:41,907 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 45 [2022-07-19 14:24:41,911 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-19 14:24:41,912 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 42 [2022-07-19 14:24:41,928 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-19 14:24:41,929 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 45 [2022-07-19 14:24:41,933 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-19 14:24:41,933 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 42 [2022-07-19 14:24:41,950 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-19 14:24:41,951 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 45 [2022-07-19 14:24:41,955 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-19 14:24:41,956 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 42 [2022-07-19 14:24:41,970 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-19 14:24:41,971 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 45 [2022-07-19 14:24:41,975 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-19 14:24:41,975 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 42 [2022-07-19 14:24:41,993 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-19 14:24:41,994 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 54 treesize of output 55 [2022-07-19 14:24:41,999 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-19 14:24:41,999 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 48 treesize of output 52 [2022-07-19 14:24:42,016 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-19 14:24:42,017 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 54 treesize of output 58 [2022-07-19 14:24:42,021 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-19 14:24:42,021 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 51 treesize of output 52 [2022-07-19 14:24:42,172 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-19 14:24:42,172 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 75 treesize of output 76 [2022-07-19 14:24:42,179 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-19 14:24:42,179 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 65 treesize of output 56 [2022-07-19 14:24:42,183 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-19 14:24:42,185 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 38 [2022-07-19 14:24:42,193 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-19 14:24:42,196 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 14:24:42,196 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-07-19 14:24:42,206 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-19 14:24:42,206 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 193 treesize of output 161 [2022-07-19 14:24:42,215 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-19 14:24:42,215 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 140 treesize of output 110 [2022-07-19 14:24:42,229 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 25 [2022-07-19 14:24:42,474 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-19 14:24:42,476 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 75 treesize of output 66 [2022-07-19 14:24:42,483 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-19 14:24:42,483 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 55 treesize of output 56 [2022-07-19 14:24:42,488 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-19 14:24:42,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 14:24:42,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 14:24:42,494 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-07-19 14:24:42,505 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-19 14:24:42,509 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 184 treesize of output 178 [2022-07-19 14:24:42,514 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 180 treesize of output 150 [2022-07-19 14:24:42,524 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-19 14:24:42,525 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 152 treesize of output 138 [2022-07-19 14:24:42,529 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 141 treesize of output 121 [2022-07-19 14:24:42,537 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-19 14:24:42,537 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 124 treesize of output 122 [2022-07-19 14:24:42,883 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 3 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 4 not checked. [2022-07-19 14:24:42,884 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [848448148] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 14:24:42,884 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-19 14:24:42,884 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 11, 11] total 29 [2022-07-19 14:24:42,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447837961] [2022-07-19 14:24:42,885 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-19 14:24:42,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-07-19 14:24:42,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 14:24:42,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-07-19 14:24:42,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=662, Unknown=3, NotChecked=52, Total=812 [2022-07-19 14:24:42,886 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) [2022-07-19 14:24:43,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 14:24:43,431 INFO L93 Difference]: Finished difference Result 50 states and 52 transitions. [2022-07-19 14:24:43,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-19 14:24:43,435 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 [2022-07-19 14:24:43,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 14:24:43,436 INFO L225 Difference]: With dead ends: 50 [2022-07-19 14:24:43,436 INFO L226 Difference]: Without dead ends: 35 [2022-07-19 14:24:43,437 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 43 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 283 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=157, Invalid=1034, Unknown=3, NotChecked=66, Total=1260 [2022-07-19 14:24:43,437 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 34 mSDsluCounter, 183 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 197 SdHoareTripleChecker+Invalid, 291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 103 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 14:24:43,437 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 197 Invalid, 291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 163 Invalid, 0 Unknown, 103 Unchecked, 0.1s Time] [2022-07-19 14:24:43,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2022-07-19 14:24:43,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 33. [2022-07-19 14:24:43,441 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) [2022-07-19 14:24:43,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 34 transitions. [2022-07-19 14:24:43,442 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 34 transitions. Word has length 28 [2022-07-19 14:24:43,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 14:24:43,442 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 34 transitions. [2022-07-19 14:24:43,442 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) [2022-07-19 14:24:43,443 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 34 transitions. [2022-07-19 14:24:43,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-07-19 14:24:43,443 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 14:24:43,443 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1] [2022-07-19 14:24:43,460 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-07-19 14:24:43,647 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 [2022-07-19 14:24:43,648 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 14:24:43,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 14:24:43,648 INFO L85 PathProgramCache]: Analyzing trace with hash 605622946, now seen corresponding path program 6 times [2022-07-19 14:24:43,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 14:24:43,648 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425550058] [2022-07-19 14:24:43,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 14:24:43,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 14:24:43,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 14:24:44,219 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 12 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 14:24:44,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 14:24:44,220 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425550058] [2022-07-19 14:24:44,220 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [425550058] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 14:24:44,220 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1727265776] [2022-07-19 14:24:44,220 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-07-19 14:24:44,220 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 14:24:44,220 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 14:24:44,221 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 14:24:44,222 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-19 14:24:44,370 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-07-19 14:24:44,370 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-19 14:24:44,372 INFO L263 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 87 conjunts are in the unsatisfiable core [2022-07-19 14:24:44,376 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 14:24:44,379 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-19 14:24:44,392 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-07-19 14:24:44,413 INFO L356 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-07-19 14:24:44,413 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-07-19 14:24:44,459 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-07-19 14:24:44,466 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-07-19 14:24:44,469 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-07-19 14:24:44,539 INFO L356 Elim1Store]: treesize reduction 48, result has 36.0 percent of original size [2022-07-19 14:24:44,540 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-07-19 14:24:44,611 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 11 treesize of output 14 [2022-07-19 14:24:44,616 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 14 [2022-07-19 14:24:44,620 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 47 [2022-07-19 14:24:44,631 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 22 [2022-07-19 14:24:44,637 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 24 treesize of output 26 [2022-07-19 14:24:44,739 INFO L356 Elim1Store]: treesize reduction 12, result has 70.7 percent of original size [2022-07-19 14:24:44,740 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 37 treesize of output 41 [2022-07-19 14:24:44,818 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-07-19 14:24:44,823 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2022-07-19 14:24:44,834 INFO L356 Elim1Store]: treesize reduction 25, result has 16.7 percent of original size [2022-07-19 14:24:44,834 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 141 treesize of output 97 [2022-07-19 14:24:44,839 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 46 [2022-07-19 14:24:44,845 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 34 [2022-07-19 14:24:45,217 INFO L356 Elim1Store]: treesize reduction 75, result has 9.6 percent of original size [2022-07-19 14:24:45,218 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 7 new quantified variables, introduced 6 case distinctions, treesize of input 252 treesize of output 98 [2022-07-19 14:24:45,229 INFO L356 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-07-19 14:24:45,230 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 23 [2022-07-19 14:24:45,252 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-07-19 14:24:45,254 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 10 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 14:24:45,254 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 14:24:45,361 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-19 14:24:45,361 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 94 treesize of output 88 [2022-07-19 14:24:45,364 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-19 14:24:45,364 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 79 treesize of output 73 [2022-07-19 14:24:45,371 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_arrayElimArr_48 (Array Int Int)) (v_arrayElimArr_47 (Array Int Int)) (v_ArrVal_485 (Array Int Int))) (let ((.cse0 (+ |c_ULTIMATE.start_main_~t~0#1.offset| 4))) (or (not (= |c_ULTIMATE.start_main_~p~0#1.base| (select v_arrayElimArr_47 .cse0))) (not (= |c_ULTIMATE.start_main_~p~0#1.offset| (select v_arrayElimArr_48 .cse0))) (= 1 (let ((.cse4 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~t~0#1.base| v_arrayElimArr_48)) (.cse1 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~t~0#1.base| v_arrayElimArr_47)) (.cse5 (+ |c_ULTIMATE.start_main_~p~0#1.offset| 4))) (let ((.cse2 (select (select .cse1 |c_ULTIMATE.start_main_~p~0#1.base|) .cse5)) (.cse3 (+ (select (select .cse4 |c_ULTIMATE.start_main_~p~0#1.base|) .cse5) 4))) (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~t~0#1.base| v_ArrVal_485) (select (select .cse1 .cse2) .cse3)) (select (select .cse4 .cse2) .cse3)))))))) is different from false [2022-07-19 14:24:45,452 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-19 14:24:45,453 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 143 treesize of output 133 [2022-07-19 14:24:45,459 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-19 14:24:45,459 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 122 treesize of output 112 [2022-07-19 14:24:45,473 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_arrayElimArr_48 (Array Int Int)) (v_arrayElimArr_47 (Array Int Int)) (v_arrayElimArr_49 (Array Int Int)) (v_ArrVal_485 (Array Int Int)) (v_ArrVal_476 (Array Int Int)) (v_arrayElimArr_50 (Array Int Int)) (|v_ULTIMATE.start_main_~t~0#1.base_21| Int)) (let ((.cse5 (+ (select v_arrayElimArr_48 4) 4)) (.cse4 (select v_arrayElimArr_47 4))) (or (not (= (select |c_#valid| |v_ULTIMATE.start_main_~t~0#1.base_21|) 0)) (= (let ((.cse3 (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~t~0#1.base| v_arrayElimArr_50) |v_ULTIMATE.start_main_~t~0#1.base_21| v_arrayElimArr_48)) (.cse0 (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~t~0#1.base| v_arrayElimArr_49) |v_ULTIMATE.start_main_~t~0#1.base_21| v_arrayElimArr_47))) (let ((.cse1 (select (select .cse0 .cse4) .cse5)) (.cse2 (+ (select (select .cse3 .cse4) .cse5) 4))) (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~t~0#1.base| v_ArrVal_476) |v_ULTIMATE.start_main_~t~0#1.base_21| v_ArrVal_485) (select (select .cse0 .cse1) .cse2)) (select (select .cse3 .cse1) .cse2)))) 1) (not (= |c_ULTIMATE.start_main_~p~0#1.offset| (select v_arrayElimArr_50 .cse5))) (not (= (select v_arrayElimArr_49 .cse5) |c_ULTIMATE.start_main_~p~0#1.base|)) (not (= .cse4 |c_ULTIMATE.start_main_~t~0#1.base|))))) is different from false [2022-07-19 14:24:45,504 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_arrayElimArr_48 (Array Int Int)) (v_arrayElimArr_47 (Array Int Int)) (v_arrayElimArr_49 (Array Int Int)) (v_ArrVal_485 (Array Int Int)) (v_ArrVal_476 (Array Int Int)) (v_arrayElimArr_50 (Array Int Int)) (|v_ULTIMATE.start_main_~t~0#1.base_21| Int)) (let ((.cse0 (select v_arrayElimArr_47 4)) (.cse5 (+ (select v_arrayElimArr_48 4) 4))) (or (not (= (select |c_#valid| .cse0) 0)) (= (let ((.cse4 (store (store |c_#memory_$Pointer$.offset| .cse0 v_arrayElimArr_50) |v_ULTIMATE.start_main_~t~0#1.base_21| v_arrayElimArr_48)) (.cse1 (store (store |c_#memory_$Pointer$.base| .cse0 v_arrayElimArr_49) |v_ULTIMATE.start_main_~t~0#1.base_21| v_arrayElimArr_47))) (let ((.cse2 (select (select .cse1 .cse0) .cse5)) (.cse3 (+ (select (select .cse4 .cse0) .cse5) 4))) (select (select (store (store |c_#memory_int| .cse0 v_ArrVal_476) |v_ULTIMATE.start_main_~t~0#1.base_21| v_ArrVal_485) (select (select .cse1 .cse2) .cse3)) (select (select .cse4 .cse2) .cse3)))) 1) (not (= (select (store |c_#valid| .cse0 1) |v_ULTIMATE.start_main_~t~0#1.base_21|) 0)) (not (= |c_ULTIMATE.start_main_~p~0#1.offset| (select v_arrayElimArr_50 .cse5))) (not (= (select v_arrayElimArr_49 .cse5) |c_ULTIMATE.start_main_~p~0#1.base|))))) is different from false [2022-07-19 14:24:45,533 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-19 14:24:45,534 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 178 treesize of output 159 [2022-07-19 14:24:45,541 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-19 14:24:45,541 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 148 treesize of output 129 [2022-07-19 14:24:45,545 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-19 14:24:45,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 14:24:45,552 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 820 treesize of output 754 [2022-07-19 14:24:45,563 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-19 14:24:45,564 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 769 treesize of output 617 [2022-07-19 14:24:45,571 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-19 14:24:45,575 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 14:24:45,576 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 1684 treesize of output 1534 [2022-07-19 14:24:45,598 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-19 14:24:45,598 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 1540 treesize of output 1322 [2022-07-19 14:24:45,630 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-19 14:24:45,631 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 1314 treesize of output 1132 [2022-07-19 14:24:45,647 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-19 14:24:45,648 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 1110 treesize of output 838 [2022-07-19 14:27:12,196 INFO L356 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-07-19 14:27:12,196 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 29 treesize of output 35 [2022-07-19 14:27:12,200 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 120 treesize of output 112 [2022-07-19 14:27:12,218 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 100 treesize of output 92 [2022-07-19 14:27:12,223 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 92 treesize of output 88 [2022-07-19 14:27:12,227 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 46 [2022-07-19 14:27:12,369 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 8 proven. 21 refuted. 2 times theorem prover too weak. 0 trivial. 16 not checked. [2022-07-19 14:27:12,370 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1727265776] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 14:27:12,370 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-19 14:27:12,370 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 14, 14] total 37 [2022-07-19 14:27:12,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664899904] [2022-07-19 14:27:12,370 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-19 14:27:12,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-07-19 14:27:12,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 14:27:12,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-07-19 14:27:12,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=1013, Unknown=5, NotChecked=198, Total=1332 [2022-07-19 14:27:12,372 INFO L87 Difference]: Start difference. First operand 33 states and 34 transitions. Second operand has 37 states, 37 states have (on average 2.189189189189189) internal successors, (81), 37 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 14:27:13,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 14:27:13,369 INFO L93 Difference]: Finished difference Result 40 states and 41 transitions. [2022-07-19 14:27:13,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-19 14:27:13,369 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 2.189189189189189) internal successors, (81), 37 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2022-07-19 14:27:13,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 14:27:13,370 INFO L225 Difference]: With dead ends: 40 [2022-07-19 14:27:13,370 INFO L226 Difference]: Without dead ends: 38 [2022-07-19 14:27:13,372 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 48 SyntacticMatches, 2 SemanticMatches, 48 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 404 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=355, Invalid=1806, Unknown=13, NotChecked=276, Total=2450 [2022-07-19 14:27:13,373 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 35 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 232 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 393 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 130 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-19 14:27:13,373 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 161 Invalid, 393 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 232 Invalid, 0 Unknown, 130 Unchecked, 0.2s Time] [2022-07-19 14:27:13,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2022-07-19 14:27:13,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 36. [2022-07-19 14:27:13,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 35 states have (on average 1.0571428571428572) internal successors, (37), 35 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) [2022-07-19 14:27:13,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 37 transitions. [2022-07-19 14:27:13,377 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 37 transitions. Word has length 32 [2022-07-19 14:27:13,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 14:27:13,377 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 37 transitions. [2022-07-19 14:27:13,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 2.189189189189189) internal successors, (81), 37 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 14:27:13,377 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 37 transitions. [2022-07-19 14:27:13,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-07-19 14:27:13,378 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 14:27:13,378 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1] [2022-07-19 14:27:13,397 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-07-19 14:27:13,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 14:27:13,584 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 14:27:13,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 14:27:13,584 INFO L85 PathProgramCache]: Analyzing trace with hash -1039628769, now seen corresponding path program 7 times [2022-07-19 14:27:13,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 14:27:13,584 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002613499] [2022-07-19 14:27:13,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 14:27:13,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 14:27:13,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 14:27:14,100 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 14:27:14,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 14:27:14,101 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002613499] [2022-07-19 14:27:14,101 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1002613499] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 14:27:14,101 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [246776941] [2022-07-19 14:27:14,101 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-07-19 14:27:14,101 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 14:27:14,101 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 14:27:14,102 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 14:27:14,103 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-19 14:27:14,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 14:27:14,206 INFO L263 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 98 conjunts are in the unsatisfiable core [2022-07-19 14:27:14,210 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 14:27:14,218 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-19 14:27:14,230 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-07-19 14:27:14,234 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-07-19 14:27:14,255 INFO L356 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-07-19 14:27:14,255 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-07-19 14:27:14,282 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-07-19 14:27:14,286 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 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 [2022-07-19 14:27:14,291 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-07-19 14:27:14,294 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-07-19 14:27:14,356 INFO L356 Elim1Store]: treesize reduction 48, result has 36.0 percent of original size [2022-07-19 14:27:14,356 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-07-19 14:27:14,421 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-07-19 14:27:14,426 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 37 [2022-07-19 14:27:14,435 INFO L356 Elim1Store]: treesize reduction 25, result has 16.7 percent of original size [2022-07-19 14:27:14,436 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 66 treesize of output 58 [2022-07-19 14:27:14,440 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-07-19 14:27:14,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 14:27:14,518 INFO L356 Elim1Store]: treesize reduction 12, result has 67.6 percent of original size [2022-07-19 14:27:14,518 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-07-19 14:27:14,582 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-07-19 14:27:14,586 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 14:27:14,587 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 57 [2022-07-19 14:27:14,603 INFO L356 Elim1Store]: treesize reduction 56, result has 16.4 percent of original size [2022-07-19 14:27:14,603 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 114 treesize of output 84 [2022-07-19 14:27:14,615 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-07-19 14:27:14,974 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-19 14:27:15,018 INFO L356 Elim1Store]: treesize reduction 198, result has 10.0 percent of original size [2022-07-19 14:27:15,018 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 14 new quantified variables, introduced 21 case distinctions, treesize of input 279 treesize of output 137 [2022-07-19 14:27:15,036 INFO L356 Elim1Store]: treesize reduction 15, result has 40.0 percent of original size [2022-07-19 14:27:15,036 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 6 disjoint index pairs (out of 21 index pairs), introduced 10 new quantified variables, introduced 3 case distinctions, treesize of input 54 treesize of output 40 [2022-07-19 14:27:15,043 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 4 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 14:27:15,044 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 14:27:15,190 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-19 14:27:15,190 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 101 treesize of output 90 [2022-07-19 14:27:15,193 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-19 14:27:15,193 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 81 treesize of output 75 [2022-07-19 14:27:15,201 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-19 14:27:15,201 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 101 treesize of output 95 [2022-07-19 14:27:15,204 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-19 14:27:15,204 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 86 treesize of output 75 [2022-07-19 14:27:15,211 WARN L833 $PredicateComparison]: unable to prove that (and (forall ((v_arrayElimArr_59 (Array Int Int)) (v_arrayElimArr_60 (Array Int Int))) (let ((.cse0 (+ |c_ULTIMATE.start_main_~t~0#1.offset| 4))) (or (not (= |c_ULTIMATE.start_main_~p~0#1.offset| (select v_arrayElimArr_60 .cse0))) (not (= |c_ULTIMATE.start_main_~p~0#1.base| (select v_arrayElimArr_59 .cse0))) (= (let ((.cse1 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~t~0#1.base| v_arrayElimArr_60)) (.cse2 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~t~0#1.base| v_arrayElimArr_59)) (.cse5 (+ |c_ULTIMATE.start_main_~p~0#1.offset| 4))) (let ((.cse3 (select (select .cse2 |c_ULTIMATE.start_main_~p~0#1.base|) .cse5)) (.cse4 (+ (select (select .cse1 |c_ULTIMATE.start_main_~p~0#1.base|) .cse5) 4))) (select (select .cse1 (select (select .cse2 .cse3) .cse4)) (+ (select (select .cse1 .cse3) .cse4) 4)))) 0)))) (forall ((v_arrayElimArr_57 (Array Int Int)) (v_arrayElimArr_58 (Array Int Int))) (let ((.cse11 (+ |c_ULTIMATE.start_main_~t~0#1.offset| 4))) (or (= (let ((.cse9 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~t~0#1.base| v_arrayElimArr_58)) (.cse6 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~t~0#1.base| v_arrayElimArr_57)) (.cse10 (+ |c_ULTIMATE.start_main_~p~0#1.offset| 4))) (let ((.cse7 (select (select .cse6 |c_ULTIMATE.start_main_~p~0#1.base|) .cse10)) (.cse8 (+ (select (select .cse9 |c_ULTIMATE.start_main_~p~0#1.base|) .cse10) 4))) (select (select .cse6 (select (select .cse6 .cse7) .cse8)) (+ (select (select .cse9 .cse7) .cse8) 4)))) 0) (not (= (select v_arrayElimArr_58 .cse11) |c_ULTIMATE.start_main_~p~0#1.offset|)) (not (= |c_ULTIMATE.start_main_~p~0#1.base| (select v_arrayElimArr_57 .cse11))))))) is different from false [2022-07-19 14:27:15,251 WARN L833 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~t~0#1.base_25| Int)) (or (not (= (select |c_#valid| |v_ULTIMATE.start_main_~t~0#1.base_25|) 0)) (and (forall ((v_arrayElimArr_57 (Array Int Int)) (v_arrayElimArr_58 (Array Int Int))) (or (not (= |c_ULTIMATE.start_main_~p~0#1.base| (select v_arrayElimArr_57 4))) (= (let ((.cse3 (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_main_~t~0#1.base_25| v_arrayElimArr_58)) (.cse0 (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_main_~t~0#1.base_25| v_arrayElimArr_57)) (.cse4 (+ |c_ULTIMATE.start_main_~p~0#1.offset| 4))) (let ((.cse1 (select (select .cse0 |c_ULTIMATE.start_main_~p~0#1.base|) .cse4)) (.cse2 (+ (select (select .cse3 |c_ULTIMATE.start_main_~p~0#1.base|) .cse4) 4))) (select (select .cse0 (select (select .cse0 .cse1) .cse2)) (+ 4 (select (select .cse3 .cse1) .cse2))))) 0) (not (= |c_ULTIMATE.start_main_~p~0#1.offset| (select v_arrayElimArr_58 4))))) (forall ((v_arrayElimArr_59 (Array Int Int)) (v_arrayElimArr_60 (Array Int Int))) (or (not (= (select v_arrayElimArr_59 4) |c_ULTIMATE.start_main_~p~0#1.base|)) (= (let ((.cse5 (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_main_~t~0#1.base_25| v_arrayElimArr_60)) (.cse6 (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_main_~t~0#1.base_25| v_arrayElimArr_59)) (.cse9 (+ |c_ULTIMATE.start_main_~p~0#1.offset| 4))) (let ((.cse7 (select (select .cse6 |c_ULTIMATE.start_main_~p~0#1.base|) .cse9)) (.cse8 (+ (select (select .cse5 |c_ULTIMATE.start_main_~p~0#1.base|) .cse9) 4))) (select (select .cse5 (select (select .cse6 .cse7) .cse8)) (+ (select (select .cse5 .cse7) .cse8) 4)))) 0) (not (= (select v_arrayElimArr_60 4) |c_ULTIMATE.start_main_~p~0#1.offset|))))))) is different from false [2022-07-19 14:27:15,288 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-19 14:27:15,288 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 122 treesize of output 116 [2022-07-19 14:27:15,293 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-19 14:27:15,293 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 107 treesize of output 96 [2022-07-19 14:27:15,307 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-19 14:27:15,307 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 122 treesize of output 111 [2022-07-19 14:27:15,312 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-19 14:27:15,312 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 102 treesize of output 96 [2022-07-19 14:27:15,418 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-19 14:27:15,418 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 122 treesize of output 116 [2022-07-19 14:27:15,422 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-19 14:27:15,422 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 107 treesize of output 96 [2022-07-19 14:27:15,436 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-19 14:27:15,437 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 122 treesize of output 111 [2022-07-19 14:27:15,445 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-19 14:27:15,445 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 102 treesize of output 96 [2022-07-19 14:27:15,504 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-19 14:27:15,504 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 100 treesize of output 95 [2022-07-19 14:27:15,508 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-19 14:27:15,509 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 88 treesize of output 86 [2022-07-19 14:27:15,524 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-19 14:27:15,525 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 100 treesize of output 98 [2022-07-19 14:27:15,530 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-19 14:27:15,530 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 91 treesize of output 86 [2022-07-19 14:27:15,548 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-19 14:27:15,548 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 100 treesize of output 98 [2022-07-19 14:27:15,553 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-19 14:27:15,554 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 91 treesize of output 86 [2022-07-19 14:27:15,567 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-19 14:27:15,567 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 100 treesize of output 95 [2022-07-19 14:27:15,572 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-19 14:27:15,572 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 88 treesize of output 86 [2022-07-19 14:27:15,587 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-19 14:27:15,587 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 122 treesize of output 120 [2022-07-19 14:27:15,600 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-19 14:27:15,601 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 113 treesize of output 108 [2022-07-19 14:27:15,624 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-19 14:27:15,624 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 122 treesize of output 117 [2022-07-19 14:27:15,629 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-19 14:27:15,630 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 110 treesize of output 108 [2022-07-19 14:27:15,792 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-19 14:27:15,792 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 157 treesize of output 146 [2022-07-19 14:27:15,797 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-19 14:27:15,798 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 137 treesize of output 131 [2022-07-19 14:27:15,823 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-19 14:27:15,823 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 157 treesize of output 151 [2022-07-19 14:27:15,829 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-19 14:27:15,829 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 142 treesize of output 131 [2022-07-19 14:27:16,296 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-19 14:27:16,297 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 206 treesize of output 177 [2022-07-19 14:27:16,305 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-19 14:27:16,305 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 166 treesize of output 147 [2022-07-19 14:27:16,308 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-19 14:27:16,309 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-19 14:27:16,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 14:27:16,310 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-19 14:27:16,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 14:27:16,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 14:27:16,317 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 798 treesize of output 740 [2022-07-19 14:27:16,323 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-19 14:27:16,324 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-19 14:27:16,327 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11786 treesize of output 11780 [2022-07-19 14:27:16,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 14:27:16,390 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 11782 treesize of output 11108 [2022-07-19 14:27:16,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 14:27:16,443 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 11133 treesize of output 7249 [2022-07-19 14:27:16,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 14:27:16,528 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 6213 treesize of output 4095 [2022-07-19 14:27:16,629 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 14:27:16,634 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-19 14:27:16,635 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 3847 treesize of output 3817 [2022-07-19 14:27:16,678 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-19 14:27:16,679 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 3801 treesize of output 3793 [2022-07-19 14:27:16,717 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-19 14:27:16,718 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 3799 treesize of output 3797 [2022-07-19 14:27:17,412 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-19 14:27:17,413 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 206 treesize of output 187 [2022-07-19 14:27:17,419 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-19 14:27:17,420 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 176 treesize of output 147 [2022-07-19 14:27:17,423 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-19 14:27:17,423 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-19 14:27:17,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 14:27:17,424 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-19 14:27:17,426 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 79 treesize of output 73 [2022-07-19 14:27:17,434 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-19 14:27:17,434 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-19 14:27:17,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 14:27:17,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 14:27:17,440 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-19 14:27:17,450 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-19 14:27:17,450 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 12957 treesize of output 12415 [2022-07-19 14:27:17,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 14:27:17,522 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-19 14:27:17,522 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 12420 treesize of output 8954 [2022-07-19 14:27:17,621 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 14:27:17,628 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-19 14:27:17,629 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 7188 treesize of output 5104 [2022-07-19 14:27:17,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 14:27:17,716 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-19 14:27:17,717 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 4895 treesize of output 4387 [2022-07-19 14:27:17,763 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 45 [2022-07-19 14:27:17,807 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 31 [2022-07-19 14:27:20,204 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 4 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 14 not checked. [2022-07-19 14:27:20,205 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [246776941] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 14:27:20,205 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-19 14:27:20,205 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 14, 14] total 37 [2022-07-19 14:27:20,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697452363] [2022-07-19 14:27:20,205 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-19 14:27:20,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-07-19 14:27:20,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 14:27:20,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-07-19 14:27:20,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=1074, Unknown=5, NotChecked=134, Total=1332 [2022-07-19 14:27:20,207 INFO L87 Difference]: Start difference. First operand 36 states and 37 transitions. Second operand has 37 states, 37 states have (on average 2.4054054054054053) internal successors, (89), 37 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 14:27:30,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 14:27:30,970 INFO L93 Difference]: Finished difference Result 60 states and 62 transitions. [2022-07-19 14:27:30,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-19 14:27:30,971 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 2.4054054054054053) internal successors, (89), 37 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2022-07-19 14:27:30,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 14:27:30,972 INFO L225 Difference]: With dead ends: 60 [2022-07-19 14:27:30,972 INFO L226 Difference]: Without dead ends: 42 [2022-07-19 14:27:30,973 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 53 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 453 ImplicationChecksByTransitivity, 12.0s TimeCoverageRelationStatistics Valid=200, Invalid=1689, Unknown=11, NotChecked=170, Total=2070 [2022-07-19 14:27:30,973 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 40 mSDsluCounter, 272 mSDsCounter, 0 mSdLazyCounter, 218 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 288 SdHoareTripleChecker+Invalid, 482 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 235 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-19 14:27:30,973 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 288 Invalid, 482 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 218 Invalid, 0 Unknown, 235 Unchecked, 0.2s Time] [2022-07-19 14:27:30,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2022-07-19 14:27:30,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 40. [2022-07-19 14:27:30,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 39 states have (on average 1.0512820512820513) internal successors, (41), 39 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 14:27:30,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 41 transitions. [2022-07-19 14:27:30,977 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 41 transitions. Word has length 35 [2022-07-19 14:27:30,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 14:27:30,978 INFO L495 AbstractCegarLoop]: Abstraction has 40 states and 41 transitions. [2022-07-19 14:27:30,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 2.4054054054054053) internal successors, (89), 37 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 14:27:30,978 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 41 transitions. [2022-07-19 14:27:30,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-07-19 14:27:30,979 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 14:27:30,979 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1] [2022-07-19 14:27:31,003 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-07-19 14:27:31,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 14:27:31,196 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 14:27:31,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 14:27:31,196 INFO L85 PathProgramCache]: Analyzing trace with hash -342676840, now seen corresponding path program 8 times [2022-07-19 14:27:31,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 14:27:31,196 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681924642] [2022-07-19 14:27:31,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 14:27:31,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 14:27:31,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 14:27:32,168 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 16 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 14:27:32,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 14:27:32,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681924642] [2022-07-19 14:27:32,169 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1681924642] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 14:27:32,169 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1939518589] [2022-07-19 14:27:32,169 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-19 14:27:32,169 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 14:27:32,169 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 14:27:32,170 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 14:27:32,170 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-07-19 14:27:32,270 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-19 14:27:32,270 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-19 14:27:32,273 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 115 conjunts are in the unsatisfiable core [2022-07-19 14:27:32,278 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 14:27:32,280 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-19 14:27:32,291 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-07-19 14:27:32,313 INFO L356 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-07-19 14:27:32,314 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-07-19 14:27:32,331 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-07-19 14:27:32,336 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-07-19 14:27:32,339 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-07-19 14:27:32,399 INFO L356 Elim1Store]: treesize reduction 48, result has 36.0 percent of original size [2022-07-19 14:27:32,399 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-07-19 14:27:32,467 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-07-19 14:27:32,471 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-07-19 14:27:32,475 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 22 [2022-07-19 14:27:32,478 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 43 [2022-07-19 14:27:32,483 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-07-19 14:27:32,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 14:27:32,580 INFO L356 Elim1Store]: treesize reduction 90, result has 36.6 percent of original size [2022-07-19 14:27:32,581 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 39 treesize of output 69 [2022-07-19 14:27:32,672 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-07-19 14:27:32,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 14:27:32,679 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 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 [2022-07-19 14:27:32,684 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 26 [2022-07-19 14:27:32,694 INFO L356 Elim1Store]: treesize reduction 25, result has 16.7 percent of original size [2022-07-19 14:27:32,695 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 123 treesize of output 83 [2022-07-19 14:27:32,700 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-07-19 14:27:32,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 14:27:32,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 14:27:32,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 14:27:32,818 INFO L356 Elim1Store]: treesize reduction 16, result has 71.9 percent of original size [2022-07-19 14:27:32,819 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 50 treesize of output 56 [2022-07-19 14:27:32,922 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-07-19 14:27:32,927 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2022-07-19 14:27:32,944 INFO L356 Elim1Store]: treesize reduction 56, result has 16.4 percent of original size [2022-07-19 14:27:32,945 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 172 treesize of output 102 [2022-07-19 14:27:32,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 14:27:32,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 14:27:32,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 14:27:32,952 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 63 [2022-07-19 14:27:32,958 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-07-19 14:27:33,477 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-19 14:27:33,531 INFO L356 Elim1Store]: treesize reduction 186, result has 15.5 percent of original size [2022-07-19 14:27:33,532 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 14 new quantified variables, introduced 21 case distinctions, treesize of input 327 treesize of output 157 [2022-07-19 14:27:33,552 INFO L356 Elim1Store]: treesize reduction 15, result has 40.0 percent of original size [2022-07-19 14:27:33,553 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 10 disjoint index pairs (out of 21 index pairs), introduced 10 new quantified variables, introduced 3 case distinctions, treesize of input 54 treesize of output 40 [2022-07-19 14:27:33,572 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-07-19 14:27:33,574 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 16 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 14:27:33,574 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 14:27:33,725 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-19 14:27:33,726 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 206 treesize of output 180 [2022-07-19 14:27:33,729 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-19 14:27:33,729 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 171 treesize of output 145 [2022-07-19 14:27:33,737 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_776 (Array Int Int)) (v_arrayElimArr_93 (Array Int Int)) (v_arrayElimArr_92 (Array Int Int))) (let ((.cse7 (+ |c_ULTIMATE.start_main_~t~0#1.offset| 4))) (or (= (let ((.cse3 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~t~0#1.base| v_arrayElimArr_93)) (.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~t~0#1.base| v_arrayElimArr_92)) (.cse6 (+ |c_ULTIMATE.start_main_~p~0#1.offset| 4))) (let ((.cse4 (select (select .cse0 |c_ULTIMATE.start_main_~p~0#1.base|) .cse6)) (.cse5 (+ (select (select .cse3 |c_ULTIMATE.start_main_~p~0#1.base|) .cse6) 4))) (let ((.cse1 (select (select .cse0 .cse4) .cse5)) (.cse2 (+ (select (select .cse3 .cse4) .cse5) 4))) (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~t~0#1.base| v_ArrVal_776) (select (select .cse0 .cse1) .cse2)) (select (select .cse3 .cse1) .cse2))))) 1) (not (= (select v_arrayElimArr_92 .cse7) |c_ULTIMATE.start_main_~p~0#1.base|)) (not (= (select v_arrayElimArr_93 .cse7) |c_ULTIMATE.start_main_~p~0#1.offset|))))) is different from false [2022-07-19 14:27:33,827 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-19 14:27:33,828 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 267 treesize of output 241 [2022-07-19 14:27:33,833 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-19 14:27:33,833 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 232 treesize of output 206 [2022-07-19 14:27:33,850 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_776 (Array Int Int)) (v_ArrVal_769 (Array Int Int)) (v_arrayElimArr_93 (Array Int Int)) (v_arrayElimArr_92 (Array Int Int)) (v_arrayElimArr_95 (Array Int Int)) (v_arrayElimArr_94 (Array Int Int)) (|v_ULTIMATE.start_main_~t~0#1.base_30| Int)) (let ((.cse0 (select v_arrayElimArr_93 4)) (.cse1 (+ |c_ULTIMATE.start_main_~t~0#1.offset| 4))) (or (not (= .cse0 |c_ULTIMATE.start_main_~t~0#1.offset|)) (not (= |c_ULTIMATE.start_main_~p~0#1.offset| (select v_arrayElimArr_95 .cse1))) (= (let ((.cse5 (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~t~0#1.base| v_arrayElimArr_95) |v_ULTIMATE.start_main_~t~0#1.base_30| v_arrayElimArr_93)) (.cse2 (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~t~0#1.base| v_arrayElimArr_94) |v_ULTIMATE.start_main_~t~0#1.base_30| v_arrayElimArr_92)) (.cse8 (+ .cse0 4))) (let ((.cse6 (select (select .cse2 |c_ULTIMATE.start_main_~t~0#1.base|) .cse8)) (.cse7 (+ (select (select .cse5 |c_ULTIMATE.start_main_~t~0#1.base|) .cse8) 4))) (let ((.cse3 (select (select .cse2 .cse6) .cse7)) (.cse4 (+ (select (select .cse5 .cse6) .cse7) 4))) (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~t~0#1.base| v_ArrVal_769) |v_ULTIMATE.start_main_~t~0#1.base_30| v_ArrVal_776) (select (select .cse2 .cse3) .cse4)) (select (select .cse5 .cse3) .cse4))))) 1) (not (= (select |c_#valid| |v_ULTIMATE.start_main_~t~0#1.base_30|) 0)) (not (= (select v_arrayElimArr_94 .cse1) |c_ULTIMATE.start_main_~p~0#1.base|)) (not (= (select v_arrayElimArr_92 4) |c_ULTIMATE.start_main_~t~0#1.base|))))) is different from false [2022-07-19 14:27:33,888 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_776 (Array Int Int)) (v_ArrVal_769 (Array Int Int)) (v_arrayElimArr_93 (Array Int Int)) (v_arrayElimArr_92 (Array Int Int)) (v_arrayElimArr_95 (Array Int Int)) (v_arrayElimArr_94 (Array Int Int)) (|v_ULTIMATE.start_main_~t~0#1.base_30| Int)) (let ((.cse8 (select v_arrayElimArr_93 4))) (let ((.cse0 (select v_arrayElimArr_92 4)) (.cse7 (+ .cse8 4))) (or (= (let ((.cse4 (store (store |c_#memory_$Pointer$.offset| .cse0 v_arrayElimArr_95) |v_ULTIMATE.start_main_~t~0#1.base_30| v_arrayElimArr_93)) (.cse1 (store (store |c_#memory_$Pointer$.base| .cse0 v_arrayElimArr_94) |v_ULTIMATE.start_main_~t~0#1.base_30| v_arrayElimArr_92))) (let ((.cse5 (select (select .cse1 .cse0) .cse7)) (.cse6 (+ (select (select .cse4 .cse0) .cse7) 4))) (let ((.cse2 (select (select .cse1 .cse5) .cse6)) (.cse3 (+ 4 (select (select .cse4 .cse5) .cse6)))) (select (select (store (store |c_#memory_int| .cse0 v_ArrVal_769) |v_ULTIMATE.start_main_~t~0#1.base_30| v_ArrVal_776) (select (select .cse1 .cse2) .cse3)) (select (select .cse4 .cse2) .cse3))))) 1) (not (= |c_ULTIMATE.start_main_~p~0#1.base| (select v_arrayElimArr_94 .cse7))) (not (= .cse8 0)) (not (= (select |c_#valid| .cse0) 0)) (not (= (select (store |c_#valid| .cse0 1) |v_ULTIMATE.start_main_~t~0#1.base_30|) 0)) (not (= (select v_arrayElimArr_95 .cse7) |c_ULTIMATE.start_main_~p~0#1.offset|)))))) is different from false [2022-07-19 14:27:33,919 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-19 14:27:33,919 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 358 treesize of output 332 [2022-07-19 14:27:33,926 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-19 14:27:33,927 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 323 treesize of output 297 [2022-07-19 14:27:33,957 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_776 (Array Int Int)) (v_ArrVal_758 (Array Int Int)) (v_ArrVal_769 (Array Int Int)) (v_arrayElimArr_93 (Array Int Int)) (v_arrayElimArr_92 (Array Int Int)) (v_arrayElimArr_95 (Array Int Int)) (v_arrayElimArr_94 (Array Int Int)) (|v_ULTIMATE.start_main_~t~0#1.base_30| Int) (v_arrayElimArr_97 (Array Int Int)) (v_arrayElimArr_96 (Array Int Int))) (let ((.cse1 (select v_arrayElimArr_93 4))) (let ((.cse3 (select v_arrayElimArr_92 4)) (.cse2 (+ .cse1 4)) (.cse0 (+ |c_ULTIMATE.start_main_~t~0#1.offset| 4))) (or (not (= (select v_arrayElimArr_97 .cse0) |c_ULTIMATE.start_main_~p~0#1.offset|)) (not (= .cse1 0)) (not (= (select v_arrayElimArr_95 .cse2) |c_ULTIMATE.start_main_~t~0#1.offset|)) (not (= (select |c_#valid| .cse3) 0)) (not (= (select (store |c_#valid| .cse3 1) |v_ULTIMATE.start_main_~t~0#1.base_30|) 0)) (= (let ((.cse7 (store (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~t~0#1.base| v_arrayElimArr_97) .cse3 v_arrayElimArr_95) |v_ULTIMATE.start_main_~t~0#1.base_30| v_arrayElimArr_93)) (.cse4 (store (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~t~0#1.base| v_arrayElimArr_96) .cse3 v_arrayElimArr_94) |v_ULTIMATE.start_main_~t~0#1.base_30| v_arrayElimArr_92))) (let ((.cse8 (select (select .cse4 .cse3) .cse2)) (.cse9 (+ (select (select .cse7 .cse3) .cse2) 4))) (let ((.cse5 (select (select .cse4 .cse8) .cse9)) (.cse6 (+ 4 (select (select .cse7 .cse8) .cse9)))) (select (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~t~0#1.base| v_ArrVal_758) .cse3 v_ArrVal_769) |v_ULTIMATE.start_main_~t~0#1.base_30| v_ArrVal_776) (select (select .cse4 .cse5) .cse6)) (select (select .cse7 .cse5) .cse6))))) 1) (not (= |c_ULTIMATE.start_main_~t~0#1.base| (select v_arrayElimArr_94 .cse2))) (not (= (select v_arrayElimArr_96 .cse0) |c_ULTIMATE.start_main_~p~0#1.base|)))))) is different from false [2022-07-19 14:27:34,027 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_776 (Array Int Int)) (v_ArrVal_758 (Array Int Int)) (v_ArrVal_769 (Array Int Int)) (v_arrayElimArr_93 (Array Int Int)) (v_arrayElimArr_92 (Array Int Int)) (v_arrayElimArr_95 (Array Int Int)) (v_arrayElimArr_94 (Array Int Int)) (|v_ULTIMATE.start_main_~t~0#1.base_30| Int) (v_arrayElimArr_97 (Array Int Int)) (v_arrayElimArr_96 (Array Int Int))) (let ((.cse0 (select v_arrayElimArr_93 4))) (let ((.cse4 (+ .cse0 4))) (let ((.cse3 (select v_arrayElimArr_94 .cse4))) (let ((.cse1 (store |c_#valid| .cse3 1)) (.cse2 (select v_arrayElimArr_92 4))) (or (not (= (select v_arrayElimArr_96 4) |c_ULTIMATE.start_main_~p~0#1.base|)) (not (= (select v_arrayElimArr_97 4) |c_ULTIMATE.start_main_~p~0#1.offset|)) (not (= .cse0 0)) (not (= (select (store .cse1 .cse2 1) |v_ULTIMATE.start_main_~t~0#1.base_30|) 0)) (not (= (select |c_#valid| .cse3) 0)) (not (= (select .cse1 .cse2) 0)) (not (= (select v_arrayElimArr_95 .cse4) 0)) (= (let ((.cse8 (store (store (store |c_#memory_$Pointer$.offset| .cse3 v_arrayElimArr_97) .cse2 v_arrayElimArr_95) |v_ULTIMATE.start_main_~t~0#1.base_30| v_arrayElimArr_93)) (.cse5 (store (store (store |c_#memory_$Pointer$.base| .cse3 v_arrayElimArr_96) .cse2 v_arrayElimArr_94) |v_ULTIMATE.start_main_~t~0#1.base_30| v_arrayElimArr_92))) (let ((.cse9 (select (select .cse5 .cse2) .cse4)) (.cse10 (+ (select (select .cse8 .cse2) .cse4) 4))) (let ((.cse6 (select (select .cse5 .cse9) .cse10)) (.cse7 (+ (select (select .cse8 .cse9) .cse10) 4))) (select (select (store (store (store |c_#memory_int| .cse3 v_ArrVal_758) .cse2 v_ArrVal_769) |v_ULTIMATE.start_main_~t~0#1.base_30| v_ArrVal_776) (select (select .cse5 .cse6) .cse7)) (select (select .cse8 .cse6) .cse7))))) 1))))))) is different from false [2022-07-19 14:27:34,077 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-19 14:27:34,077 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 521 treesize of output 462 [2022-07-19 14:27:34,085 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-19 14:27:34,086 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 451 treesize of output 392 [2022-07-19 14:27:34,090 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-19 14:27:34,090 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-19 14:27:34,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 14:27:34,092 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-19 14:27:34,097 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 14:27:34,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 14:27:34,099 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 1982 treesize of output 1904 [2022-07-19 14:27:34,112 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-19 14:27:34,113 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 1965 treesize of output 1687 [2022-07-19 14:27:34,128 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-19 14:27:34,129 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-19 14:27:34,134 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 14:27:34,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 14:27:34,136 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-19 14:27:34,160 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-19 14:27:34,161 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 991084 treesize of output 954254 [2022-07-19 14:27:36,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 14:27:37,000 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-19 14:27:37,001 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 954267 treesize of output 699943 [2022-07-19 14:28:00,002 WARN L233 SmtUtils]: Spent 23.00s on a formula simplification. DAG size of input: 664 DAG size of output: 664 (called from [L 813] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-07-19 14:28:00,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 14:28:00,072 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-19 14:28:00,073 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 681455 treesize of output 484977 [2022-07-19 14:28:11,970 WARN L233 SmtUtils]: Spent 11.90s on a formula simplification. DAG size of input: 659 DAG size of output: 625 (called from [L 813] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-07-19 14:28:12,042 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 14:28:12,055 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-19 14:28:12,056 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 278950 treesize of output 240164 [2022-07-19 14:28:13,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 14:28:13,244 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-19 14:28:13,245 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 240196 treesize of output 232092 [2022-07-19 14:28:14,437 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-19 14:28:14,438 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 232082 treesize of output 229138 [2022-07-19 14:28:31,157 WARN L233 SmtUtils]: Spent 6.97s on a formula simplification. DAG size of input: 576 DAG size of output: 576 (called from [L 813] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify)