./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/heap-data/calendar.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6c24879c Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/heap-data/calendar.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 fe08ef78ee5c945bc38e9e915e26405aefe9ffb2d4911c91347e07e6a879dcd5 --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 03:37:14,213 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 03:37:14,215 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 03:37:14,244 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 03:37:14,248 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 03:37:14,249 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 03:37:14,253 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 03:37:14,257 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 03:37:14,259 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 03:37:14,263 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 03:37:14,264 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 03:37:14,265 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 03:37:14,266 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 03:37:14,267 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 03:37:14,269 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 03:37:14,270 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 03:37:14,271 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 03:37:14,272 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 03:37:14,273 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 03:37:14,276 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 03:37:14,279 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 03:37:14,280 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 03:37:14,281 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 03:37:14,281 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 03:37:14,282 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 03:37:14,284 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 03:37:14,285 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 03:37:14,285 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 03:37:14,286 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 03:37:14,287 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 03:37:14,287 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 03:37:14,288 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 03:37:14,289 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 03:37:14,289 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 03:37:14,289 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 03:37:14,290 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 03:37:14,290 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 03:37:14,291 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 03:37:14,291 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 03:37:14,291 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 03:37:14,291 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 03:37:14,293 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 03:37:14,294 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-12 03:37:14,313 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 03:37:14,313 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 03:37:14,313 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 03:37:14,313 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 03:37:14,314 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 03:37:14,314 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 03:37:14,314 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 03:37:14,314 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 03:37:14,315 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 03:37:14,315 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 03:37:14,315 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-12 03:37:14,315 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 03:37:14,315 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-12 03:37:14,315 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 03:37:14,316 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 03:37:14,316 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 03:37:14,316 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 03:37:14,316 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-12 03:37:14,316 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 03:37:14,316 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 03:37:14,316 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 03:37:14,316 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 03:37:14,317 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 03:37:14,317 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 03:37:14,317 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 03:37:14,317 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 03:37:14,317 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 03:37:14,317 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 03:37:14,318 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 03:37:14,318 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 03:37:14,318 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 03:37:14,318 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 03:37:14,318 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 03:37:14,318 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fe08ef78ee5c945bc38e9e915e26405aefe9ffb2d4911c91347e07e6a879dcd5 [2022-07-12 03:37:14,464 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 03:37:14,476 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 03:37:14,478 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 03:37:14,479 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 03:37:14,480 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 03:37:14,480 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/heap-data/calendar.i [2022-07-12 03:37:14,522 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/79db18ba3/675cf3f06c1243369680ffa4de0ea03a/FLAGb0bd8974e [2022-07-12 03:37:14,979 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 03:37:14,980 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/heap-data/calendar.i [2022-07-12 03:37:14,994 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/79db18ba3/675cf3f06c1243369680ffa4de0ea03a/FLAGb0bd8974e [2022-07-12 03:37:15,524 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/79db18ba3/675cf3f06c1243369680ffa4de0ea03a [2022-07-12 03:37:15,527 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 03:37:15,529 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 03:37:15,540 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 03:37:15,540 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 03:37:15,543 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 03:37:15,543 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 03:37:15" (1/1) ... [2022-07-12 03:37:15,544 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46459823 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 03:37:15, skipping insertion in model container [2022-07-12 03:37:15,544 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 03:37:15" (1/1) ... [2022-07-12 03:37:15,549 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 03:37:15,576 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 03:37:16,001 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/heap-data/calendar.i[23742,23755] [2022-07-12 03:37:16,004 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 03:37:16,012 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 03:37:16,060 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/heap-data/calendar.i[23742,23755] [2022-07-12 03:37:16,064 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 03:37:16,081 INFO L208 MainTranslator]: Completed translation [2022-07-12 03:37:16,082 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 03:37:16 WrapperNode [2022-07-12 03:37:16,082 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 03:37:16,083 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 03:37:16,083 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 03:37:16,083 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 03:37:16,087 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 03:37:16" (1/1) ... [2022-07-12 03:37:16,102 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 03:37:16" (1/1) ... [2022-07-12 03:37:16,118 INFO L137 Inliner]: procedures = 121, calls = 15, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 71 [2022-07-12 03:37:16,118 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 03:37:16,119 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 03:37:16,119 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 03:37:16,119 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 03:37:16,124 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 03:37:16" (1/1) ... [2022-07-12 03:37:16,124 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 03:37:16" (1/1) ... [2022-07-12 03:37:16,134 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 03:37:16" (1/1) ... [2022-07-12 03:37:16,134 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 03:37:16" (1/1) ... [2022-07-12 03:37:16,157 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 03:37:16" (1/1) ... [2022-07-12 03:37:16,162 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 03:37:16" (1/1) ... [2022-07-12 03:37:16,164 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 03:37:16" (1/1) ... [2022-07-12 03:37:16,167 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 03:37:16,169 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 03:37:16,169 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 03:37:16,169 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 03:37:16,170 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 03:37:16" (1/1) ... [2022-07-12 03:37:16,174 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 03:37:16,187 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 03:37:16,236 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) [2022-07-12 03:37:16,276 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 [2022-07-12 03:37:16,332 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-12 03:37:16,335 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-12 03:37:16,335 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-12 03:37:16,335 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 03:37:16,335 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-12 03:37:16,335 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-12 03:37:16,335 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 03:37:16,335 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 03:37:16,336 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 03:37:16,462 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 03:37:16,463 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 03:37:16,663 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 03:37:16,667 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 03:37:16,667 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-07-12 03:37:16,668 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 03:37:16 BoogieIcfgContainer [2022-07-12 03:37:16,668 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 03:37:16,670 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 03:37:16,670 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 03:37:16,672 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 03:37:16,673 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 03:37:15" (1/3) ... [2022-07-12 03:37:16,678 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75c7346 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 03:37:16, skipping insertion in model container [2022-07-12 03:37:16,679 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 03:37:16" (2/3) ... [2022-07-12 03:37:16,679 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75c7346 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 03:37:16, skipping insertion in model container [2022-07-12 03:37:16,679 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 03:37:16" (3/3) ... [2022-07-12 03:37:16,680 INFO L111 eAbstractionObserver]: Analyzing ICFG calendar.i [2022-07-12 03:37:16,689 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 03:37:16,703 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-12 03:37:16,749 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 03:37:16,767 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@24b6339f, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@1478bac4 [2022-07-12 03:37:16,774 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-12 03:37:16,778 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 19 states have (on average 1.5789473684210527) internal successors, (30), 20 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) [2022-07-12 03:37:16,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-07-12 03:37:16,800 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 03:37:16,801 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 03:37:16,802 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 03:37:16,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 03:37:16,806 INFO L85 PathProgramCache]: Analyzing trace with hash 399551724, now seen corresponding path program 1 times [2022-07-12 03:37:16,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 03:37:16,812 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573789203] [2022-07-12 03:37:16,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 03:37:16,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 03:37:16,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 03:37:16,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 03:37:16,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 03:37:16,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573789203] [2022-07-12 03:37:16,902 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [573789203] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 03:37:16,903 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 03:37:16,903 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-12 03:37:16,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165024235] [2022-07-12 03:37:16,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 03:37:16,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-12 03:37:16,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 03:37:16,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-12 03:37:16,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-12 03:37:16,940 INFO L87 Difference]: Start difference. First operand has 21 states, 19 states have (on average 1.5789473684210527) internal successors, (30), 20 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) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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) [2022-07-12 03:37:16,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 03:37:16,951 INFO L93 Difference]: Finished difference Result 35 states and 49 transitions. [2022-07-12 03:37:16,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-12 03:37:16,953 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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 10 [2022-07-12 03:37:16,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 03:37:16,958 INFO L225 Difference]: With dead ends: 35 [2022-07-12 03:37:16,958 INFO L226 Difference]: Without dead ends: 18 [2022-07-12 03:37:16,960 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 [2022-07-12 03:37:16,963 INFO L413 NwaCegarLoop]: 27 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, 27 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 [2022-07-12 03:37:16,963 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 03:37:16,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2022-07-12 03:37:16,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2022-07-12 03:37:16,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.411764705882353) internal successors, (24), 17 states have internal predecessors, (24), 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) [2022-07-12 03:37:16,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 24 transitions. [2022-07-12 03:37:16,985 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 24 transitions. Word has length 10 [2022-07-12 03:37:16,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 03:37:16,986 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 24 transitions. [2022-07-12 03:37:16,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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) [2022-07-12 03:37:16,986 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 24 transitions. [2022-07-12 03:37:16,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-07-12 03:37:16,986 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 03:37:16,987 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 03:37:16,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-12 03:37:16,987 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 03:37:16,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 03:37:16,988 INFO L85 PathProgramCache]: Analyzing trace with hash -1946762309, now seen corresponding path program 1 times [2022-07-12 03:37:16,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 03:37:16,988 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621006712] [2022-07-12 03:37:16,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 03:37:16,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 03:37:17,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 03:37:17,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 03:37:17,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 03:37:17,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621006712] [2022-07-12 03:37:17,090 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1621006712] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 03:37:17,090 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 03:37:17,090 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 03:37:17,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154810543] [2022-07-12 03:37:17,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 03:37:17,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 03:37:17,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 03:37:17,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 03:37:17,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 03:37:17,093 INFO L87 Difference]: Start difference. First operand 18 states and 24 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 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) [2022-07-12 03:37:17,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 03:37:17,131 INFO L93 Difference]: Finished difference Result 35 states and 47 transitions. [2022-07-12 03:37:17,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-12 03:37:17,131 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 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) Word has length 12 [2022-07-12 03:37:17,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 03:37:17,133 INFO L225 Difference]: With dead ends: 35 [2022-07-12 03:37:17,133 INFO L226 Difference]: Without dead ends: 23 [2022-07-12 03:37:17,136 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 [2022-07-12 03:37:17,138 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 5 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 03:37:17,138 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 59 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 03:37:17,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2022-07-12 03:37:17,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2022-07-12 03:37:17,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.4090909090909092) internal successors, (31), 22 states have internal predecessors, (31), 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) [2022-07-12 03:37:17,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 31 transitions. [2022-07-12 03:37:17,144 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 31 transitions. Word has length 12 [2022-07-12 03:37:17,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 03:37:17,146 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 31 transitions. [2022-07-12 03:37:17,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 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) [2022-07-12 03:37:17,147 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 31 transitions. [2022-07-12 03:37:17,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-07-12 03:37:17,148 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 03:37:17,148 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 03:37:17,149 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-12 03:37:17,149 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 03:37:17,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 03:37:17,150 INFO L85 PathProgramCache]: Analyzing trace with hash -1070818203, now seen corresponding path program 1 times [2022-07-12 03:37:17,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 03:37:17,153 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178013064] [2022-07-12 03:37:17,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 03:37:17,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 03:37:17,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 03:37:17,322 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 03:37:17,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 03:37:17,323 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178013064] [2022-07-12 03:37:17,323 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1178013064] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 03:37:17,323 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 03:37:17,323 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-12 03:37:17,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615949699] [2022-07-12 03:37:17,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 03:37:17,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-12 03:37:17,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 03:37:17,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-12 03:37:17,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-12 03:37:17,325 INFO L87 Difference]: Start difference. First operand 23 states and 31 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 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) [2022-07-12 03:37:17,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 03:37:17,745 INFO L93 Difference]: Finished difference Result 78 states and 105 transitions. [2022-07-12 03:37:17,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-07-12 03:37:17,745 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 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 17 [2022-07-12 03:37:17,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 03:37:17,748 INFO L225 Difference]: With dead ends: 78 [2022-07-12 03:37:17,749 INFO L226 Difference]: Without dead ends: 68 [2022-07-12 03:37:17,750 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=149, Invalid=357, Unknown=0, NotChecked=0, Total=506 [2022-07-12 03:37:17,752 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 132 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 03:37:17,755 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [132 Valid, 114 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 03:37:17,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2022-07-12 03:37:17,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 27. [2022-07-12 03:37:17,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.3846153846153846) internal successors, (36), 26 states have internal predecessors, (36), 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) [2022-07-12 03:37:17,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 36 transitions. [2022-07-12 03:37:17,763 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 36 transitions. Word has length 17 [2022-07-12 03:37:17,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 03:37:17,763 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 36 transitions. [2022-07-12 03:37:17,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 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) [2022-07-12 03:37:17,764 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 36 transitions. [2022-07-12 03:37:17,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-07-12 03:37:17,765 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 03:37:17,765 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 03:37:17,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-12 03:37:17,765 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 03:37:17,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 03:37:17,768 INFO L85 PathProgramCache]: Analyzing trace with hash 1737463723, now seen corresponding path program 1 times [2022-07-12 03:37:17,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 03:37:17,768 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194324825] [2022-07-12 03:37:17,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 03:37:17,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 03:37:17,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 03:37:17,823 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-12 03:37:17,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 03:37:17,823 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194324825] [2022-07-12 03:37:17,823 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [194324825] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 03:37:17,823 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 03:37:17,823 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 03:37:17,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155975587] [2022-07-12 03:37:17,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 03:37:17,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 03:37:17,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 03:37:17,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 03:37:17,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-12 03:37:17,825 INFO L87 Difference]: Start difference. First operand 27 states and 36 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 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) [2022-07-12 03:37:17,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 03:37:17,869 INFO L93 Difference]: Finished difference Result 50 states and 65 transitions. [2022-07-12 03:37:17,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 03:37:17,870 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-07-12 03:37:17,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 03:37:17,870 INFO L225 Difference]: With dead ends: 50 [2022-07-12 03:37:17,870 INFO L226 Difference]: Without dead ends: 38 [2022-07-12 03:37:17,871 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-07-12 03:37:17,871 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 19 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 03:37:17,872 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 53 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 03:37:17,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2022-07-12 03:37:17,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 30. [2022-07-12 03:37:17,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 29 states have (on average 1.3448275862068966) internal successors, (39), 29 states have internal predecessors, (39), 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) [2022-07-12 03:37:17,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 39 transitions. [2022-07-12 03:37:17,876 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 39 transitions. Word has length 19 [2022-07-12 03:37:17,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 03:37:17,876 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 39 transitions. [2022-07-12 03:37:17,877 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 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) [2022-07-12 03:37:17,877 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 39 transitions. [2022-07-12 03:37:17,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-07-12 03:37:17,877 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 03:37:17,877 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 03:37:17,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-12 03:37:17,878 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 03:37:17,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 03:37:17,878 INFO L85 PathProgramCache]: Analyzing trace with hash 1737523305, now seen corresponding path program 1 times [2022-07-12 03:37:17,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 03:37:17,878 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618707749] [2022-07-12 03:37:17,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 03:37:17,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 03:37:17,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 03:37:17,909 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-12 03:37:17,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 03:37:17,909 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618707749] [2022-07-12 03:37:17,910 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [618707749] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 03:37:17,910 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 03:37:17,910 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 03:37:17,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244963000] [2022-07-12 03:37:17,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 03:37:17,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 03:37:17,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 03:37:17,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 03:37:17,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 03:37:17,911 INFO L87 Difference]: Start difference. First operand 30 states and 39 transitions. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 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) [2022-07-12 03:37:17,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 03:37:17,925 INFO L93 Difference]: Finished difference Result 34 states and 43 transitions. [2022-07-12 03:37:17,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-12 03:37:17,925 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-07-12 03:37:17,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 03:37:17,925 INFO L225 Difference]: With dead ends: 34 [2022-07-12 03:37:17,926 INFO L226 Difference]: Without dead ends: 32 [2022-07-12 03:37:17,926 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 [2022-07-12 03:37:17,926 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 2 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 03:37:17,927 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 54 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 03:37:17,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2022-07-12 03:37:17,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2022-07-12 03:37:17,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 31 states have (on average 1.3225806451612903) internal successors, (41), 31 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) [2022-07-12 03:37:17,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 41 transitions. [2022-07-12 03:37:17,930 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 41 transitions. Word has length 19 [2022-07-12 03:37:17,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 03:37:17,931 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 41 transitions. [2022-07-12 03:37:17,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 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) [2022-07-12 03:37:17,931 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 41 transitions. [2022-07-12 03:37:17,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-07-12 03:37:17,931 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 03:37:17,931 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 03:37:17,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-12 03:37:17,932 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 03:37:17,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 03:37:17,932 INFO L85 PathProgramCache]: Analyzing trace with hash -782496211, now seen corresponding path program 1 times [2022-07-12 03:37:17,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 03:37:17,933 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70245382] [2022-07-12 03:37:17,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 03:37:17,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 03:37:17,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 03:37:18,007 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 03:37:18,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 03:37:18,007 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70245382] [2022-07-12 03:37:18,008 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [70245382] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 03:37:18,008 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 03:37:18,008 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-12 03:37:18,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035100038] [2022-07-12 03:37:18,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 03:37:18,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-12 03:37:18,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 03:37:18,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-12 03:37:18,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-12 03:37:18,009 INFO L87 Difference]: Start difference. First operand 32 states and 41 transitions. Second operand has 8 states, 8 states have (on average 2.375) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 03:37:18,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 03:37:18,246 INFO L93 Difference]: Finished difference Result 76 states and 93 transitions. [2022-07-12 03:37:18,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-12 03:37:18,247 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.375) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-07-12 03:37:18,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 03:37:18,247 INFO L225 Difference]: With dead ends: 76 [2022-07-12 03:37:18,247 INFO L226 Difference]: Without dead ends: 74 [2022-07-12 03:37:18,247 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=108, Invalid=234, Unknown=0, NotChecked=0, Total=342 [2022-07-12 03:37:18,248 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 82 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 03:37:18,248 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 108 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 03:37:18,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2022-07-12 03:37:18,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 35. [2022-07-12 03:37:18,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 34 states have (on average 1.3235294117647058) internal successors, (45), 34 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) [2022-07-12 03:37:18,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 45 transitions. [2022-07-12 03:37:18,252 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 45 transitions. Word has length 19 [2022-07-12 03:37:18,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 03:37:18,252 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 45 transitions. [2022-07-12 03:37:18,253 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.375) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 03:37:18,253 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 45 transitions. [2022-07-12 03:37:18,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-07-12 03:37:18,253 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 03:37:18,253 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 03:37:18,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-12 03:37:18,254 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 03:37:18,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 03:37:18,254 INFO L85 PathProgramCache]: Analyzing trace with hash 830966801, now seen corresponding path program 1 times [2022-07-12 03:37:18,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 03:37:18,254 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979143638] [2022-07-12 03:37:18,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 03:37:18,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 03:37:18,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 03:37:18,307 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 03:37:18,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 03:37:18,308 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979143638] [2022-07-12 03:37:18,308 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1979143638] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 03:37:18,308 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [106334227] [2022-07-12 03:37:18,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 03:37:18,308 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 03:37:18,308 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 03:37:18,310 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) [2022-07-12 03:37:18,339 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-12 03:37:18,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 03:37:18,394 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 27 conjunts are in the unsatisfiable core [2022-07-12 03:37:18,398 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 03:37:18,448 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 [2022-07-12 03:37:18,451 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 [2022-07-12 03:37:18,565 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 [2022-07-12 03:37:18,568 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 [2022-07-12 03:37:18,572 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 03:37:18,572 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 03:37:18,684 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 03:37:18,685 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [106334227] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 03:37:18,685 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 03:37:18,685 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 8 [2022-07-12 03:37:18,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792877593] [2022-07-12 03:37:18,685 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 03:37:18,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-12 03:37:18,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 03:37:18,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-12 03:37:18,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-07-12 03:37:18,687 INFO L87 Difference]: Start difference. First operand 35 states and 45 transitions. Second operand has 8 states, 8 states have (on average 4.75) internal successors, (38), 8 states have internal predecessors, (38), 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) [2022-07-12 03:37:18,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 03:37:18,772 INFO L93 Difference]: Finished difference Result 68 states and 86 transitions. [2022-07-12 03:37:18,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 03:37:18,773 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.75) internal successors, (38), 8 states have internal predecessors, (38), 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 [2022-07-12 03:37:18,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 03:37:18,776 INFO L225 Difference]: With dead ends: 68 [2022-07-12 03:37:18,776 INFO L226 Difference]: Without dead ends: 40 [2022-07-12 03:37:18,777 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-07-12 03:37:18,778 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 32 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 03:37:18,778 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 125 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 03:37:18,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2022-07-12 03:37:18,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2022-07-12 03:37:18,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 39 states have (on average 1.3333333333333333) internal successors, (52), 39 states have internal predecessors, (52), 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) [2022-07-12 03:37:18,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 52 transitions. [2022-07-12 03:37:18,790 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 52 transitions. Word has length 25 [2022-07-12 03:37:18,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 03:37:18,790 INFO L495 AbstractCegarLoop]: Abstraction has 40 states and 52 transitions. [2022-07-12 03:37:18,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.75) internal successors, (38), 8 states have internal predecessors, (38), 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) [2022-07-12 03:37:18,791 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 52 transitions. [2022-07-12 03:37:18,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-07-12 03:37:18,791 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 03:37:18,792 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 03:37:18,811 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-12 03:37:19,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 03:37:19,008 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 03:37:19,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 03:37:19,008 INFO L85 PathProgramCache]: Analyzing trace with hash 1524144039, now seen corresponding path program 2 times [2022-07-12 03:37:19,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 03:37:19,008 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912407605] [2022-07-12 03:37:19,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 03:37:19,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 03:37:19,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 03:37:19,258 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 03:37:19,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 03:37:19,260 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912407605] [2022-07-12 03:37:19,261 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [912407605] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 03:37:19,261 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [369997326] [2022-07-12 03:37:19,261 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-12 03:37:19,261 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 03:37:19,262 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 03:37:19,263 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) [2022-07-12 03:37:19,292 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-12 03:37:19,367 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-12 03:37:19,367 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-12 03:37:19,369 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 50 conjunts are in the unsatisfiable core [2022-07-12 03:37:19,382 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 03:37:19,392 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 [2022-07-12 03:37:19,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:37:19,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:37:19,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:37:19,399 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 26 [2022-07-12 03:37:19,459 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 [2022-07-12 03:37:19,464 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 [2022-07-12 03:37:19,472 INFO L356 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2022-07-12 03:37:19,473 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 15 treesize of output 15 [2022-07-12 03:37:19,477 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 32 treesize of output 28 [2022-07-12 03:37:19,619 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 [2022-07-12 03:37:19,623 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 41 treesize of output 25 [2022-07-12 03:37:19,697 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 9 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 03:37:19,697 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 03:37:19,843 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_192 (Array Int Int)) (|v_ULTIMATE.start_main_~l~0#1.base_10| Int)) (let ((.cse0 (select (store |c_#memory_int| |v_ULTIMATE.start_main_~l~0#1.base_10| v_ArrVal_192) |c_ULTIMATE.start_main_~l~0#1.base|))) (or (not (= 3 (select .cse0 (+ |c_ULTIMATE.start_main_~l~0#1.offset| 8)))) (not (= (select .cse0 (+ |c_ULTIMATE.start_main_~l~0#1.offset| 4)) 1)) (not (= (select |c_#valid| |v_ULTIMATE.start_main_~l~0#1.base_10|) 0))))) is different from false [2022-07-12 03:37:19,889 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2022-07-12 03:37:19,889 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [369997326] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 03:37:19,891 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 03:37:19,892 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9, 9] total 23 [2022-07-12 03:37:19,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046006944] [2022-07-12 03:37:19,892 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 03:37:19,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-07-12 03:37:19,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 03:37:19,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-07-12 03:37:19,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=405, Unknown=1, NotChecked=40, Total=506 [2022-07-12 03:37:19,894 INFO L87 Difference]: Start difference. First operand 40 states and 52 transitions. Second operand has 23 states, 23 states have (on average 3.0869565217391304) internal successors, (71), 23 states have internal predecessors, (71), 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) [2022-07-12 03:37:22,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 03:37:22,532 INFO L93 Difference]: Finished difference Result 136 states and 165 transitions. [2022-07-12 03:37:22,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-07-12 03:37:22,532 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 3.0869565217391304) internal successors, (71), 23 states have internal predecessors, (71), 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 30 [2022-07-12 03:37:22,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 03:37:22,533 INFO L225 Difference]: With dead ends: 136 [2022-07-12 03:37:22,533 INFO L226 Difference]: Without dead ends: 121 [2022-07-12 03:37:22,534 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 53 SyntacticMatches, 4 SemanticMatches, 55 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 662 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=847, Invalid=2236, Unknown=1, NotChecked=108, Total=3192 [2022-07-12 03:37:22,534 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 568 mSDsluCounter, 273 mSDsCounter, 0 mSdLazyCounter, 221 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 568 SdHoareTripleChecker+Valid, 302 SdHoareTripleChecker+Invalid, 381 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 221 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 72 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-12 03:37:22,534 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [568 Valid, 302 Invalid, 381 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 221 Invalid, 0 Unknown, 72 Unchecked, 0.4s Time] [2022-07-12 03:37:22,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2022-07-12 03:37:22,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 48. [2022-07-12 03:37:22,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 47 states have (on average 1.297872340425532) internal successors, (61), 47 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) [2022-07-12 03:37:22,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 61 transitions. [2022-07-12 03:37:22,539 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 61 transitions. Word has length 30 [2022-07-12 03:37:22,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 03:37:22,539 INFO L495 AbstractCegarLoop]: Abstraction has 48 states and 61 transitions. [2022-07-12 03:37:22,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 3.0869565217391304) internal successors, (71), 23 states have internal predecessors, (71), 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) [2022-07-12 03:37:22,539 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 61 transitions. [2022-07-12 03:37:22,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-07-12 03:37:22,540 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 03:37:22,540 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 03:37:22,579 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-12 03:37:22,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-07-12 03:37:22,765 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 03:37:22,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 03:37:22,766 INFO L85 PathProgramCache]: Analyzing trace with hash 1895186671, now seen corresponding path program 1 times [2022-07-12 03:37:22,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 03:37:22,766 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180872774] [2022-07-12 03:37:22,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 03:37:22,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 03:37:22,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 03:37:22,942 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 03:37:22,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 03:37:22,943 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180872774] [2022-07-12 03:37:22,943 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [180872774] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 03:37:22,943 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1889712406] [2022-07-12 03:37:22,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 03:37:22,943 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 03:37:22,944 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 03:37:22,964 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) [2022-07-12 03:37:22,977 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-12 03:37:23,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 03:37:23,059 INFO L263 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 52 conjunts are in the unsatisfiable core [2022-07-12 03:37:23,063 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 03:37:23,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:37:23,075 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:37:23,076 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:37:23,076 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 26 [2022-07-12 03:37:23,091 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 [2022-07-12 03:37:23,132 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 [2022-07-12 03:37:23,139 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 [2022-07-12 03:37:23,144 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:37:23,144 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 32 treesize of output 28 [2022-07-12 03:37:23,150 INFO L356 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2022-07-12 03:37:23,150 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 15 treesize of output 15 [2022-07-12 03:37:23,269 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 41 treesize of output 25 [2022-07-12 03:37:23,272 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 [2022-07-12 03:37:23,335 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 03:37:23,335 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 03:37:23,389 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_272 (Array Int Int)) (|v_ULTIMATE.start_main_~l~0#1.base_13| Int)) (let ((.cse0 (select (store |c_#memory_int| |v_ULTIMATE.start_main_~l~0#1.base_13| v_ArrVal_272) |c_ULTIMATE.start_main_~l~0#1.base|))) (or (not (= (select |c_#valid| |v_ULTIMATE.start_main_~l~0#1.base_13|) 0)) (not (= (select .cse0 (+ |c_ULTIMATE.start_main_~l~0#1.offset| 4)) 0)) (not (= 2 (select .cse0 (+ |c_ULTIMATE.start_main_~l~0#1.offset| 8))))))) is different from false [2022-07-12 03:37:23,421 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2022-07-12 03:37:23,421 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1889712406] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 03:37:23,421 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 03:37:23,421 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 9] total 18 [2022-07-12 03:37:23,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916506745] [2022-07-12 03:37:23,421 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 03:37:23,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-12 03:37:23,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 03:37:23,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-12 03:37:23,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=227, Unknown=1, NotChecked=30, Total=306 [2022-07-12 03:37:23,422 INFO L87 Difference]: Start difference. First operand 48 states and 61 transitions. Second operand has 18 states, 18 states have (on average 3.6666666666666665) internal successors, (66), 18 states have internal predecessors, (66), 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) [2022-07-12 03:37:24,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 03:37:24,302 INFO L93 Difference]: Finished difference Result 67 states and 82 transitions. [2022-07-12 03:37:24,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-07-12 03:37:24,302 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.6666666666666665) internal successors, (66), 18 states have internal predecessors, (66), 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 [2022-07-12 03:37:24,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 03:37:24,304 INFO L225 Difference]: With dead ends: 67 [2022-07-12 03:37:24,304 INFO L226 Difference]: Without dead ends: 65 [2022-07-12 03:37:24,305 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 61 SyntacticMatches, 2 SemanticMatches, 34 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 243 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=343, Invalid=850, Unknown=1, NotChecked=66, Total=1260 [2022-07-12 03:37:24,306 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 122 mSDsluCounter, 231 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 259 SdHoareTripleChecker+Invalid, 295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 43 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-12 03:37:24,307 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 259 Invalid, 295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 159 Invalid, 0 Unknown, 43 Unchecked, 0.2s Time] [2022-07-12 03:37:24,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2022-07-12 03:37:24,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 51. [2022-07-12 03:37:24,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 50 states have (on average 1.3) internal successors, (65), 50 states have internal predecessors, (65), 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) [2022-07-12 03:37:24,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 65 transitions. [2022-07-12 03:37:24,320 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 65 transitions. Word has length 32 [2022-07-12 03:37:24,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 03:37:24,320 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 65 transitions. [2022-07-12 03:37:24,320 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.6666666666666665) internal successors, (66), 18 states have internal predecessors, (66), 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) [2022-07-12 03:37:24,320 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 65 transitions. [2022-07-12 03:37:24,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-07-12 03:37:24,323 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 03:37:24,324 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 03:37:24,349 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-12 03:37:24,545 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 03:37:24,546 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 03:37:24,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 03:37:24,546 INFO L85 PathProgramCache]: Analyzing trace with hash 1135420755, now seen corresponding path program 3 times [2022-07-12 03:37:24,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 03:37:24,546 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914136938] [2022-07-12 03:37:24,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 03:37:24,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 03:37:24,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 03:37:24,707 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 8 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 03:37:24,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 03:37:24,708 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914136938] [2022-07-12 03:37:24,708 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1914136938] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 03:37:24,708 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [563469490] [2022-07-12 03:37:24,708 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-12 03:37:24,708 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 03:37:24,708 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 03:37:24,709 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) [2022-07-12 03:37:24,710 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-12 03:37:24,787 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-07-12 03:37:24,787 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-12 03:37:24,789 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 54 conjunts are in the unsatisfiable core [2022-07-12 03:37:24,792 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 03:37:24,808 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 [2022-07-12 03:37:24,812 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 [2022-07-12 03:37:24,816 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 [2022-07-12 03:37:24,856 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 [2022-07-12 03:37:24,860 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 [2022-07-12 03:37:24,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:37:24,864 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 [2022-07-12 03:37:24,870 INFO L356 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2022-07-12 03:37:24,870 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 15 treesize of output 15 [2022-07-12 03:37:24,874 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 [2022-07-12 03:37:25,095 INFO L356 Elim1Store]: treesize reduction 17, result has 15.0 percent of original size [2022-07-12 03:37:25,095 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 61 treesize of output 35 [2022-07-12 03:37:25,104 INFO L356 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-07-12 03:37:25,104 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 26 treesize of output 16 [2022-07-12 03:37:25,120 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 8 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 03:37:25,120 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 03:37:25,183 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-12 03:37:25,183 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 13 treesize of output 17 [2022-07-12 03:37:25,193 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-12 03:37:25,193 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 13 treesize of output 17 [2022-07-12 03:37:25,321 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-12 03:37:25,322 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 18 treesize of output 19 [2022-07-12 03:37:25,324 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-12 03:37:25,325 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 16 treesize of output 8 [2022-07-12 03:37:25,346 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-12 03:37:25,346 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 24 treesize of output 23 [2022-07-12 03:37:25,348 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-12 03:37:25,349 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 20 treesize of output 8 [2022-07-12 03:37:25,358 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 8 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 03:37:25,358 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [563469490] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 03:37:25,358 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 03:37:25,358 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 8] total 16 [2022-07-12 03:37:25,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806355220] [2022-07-12 03:37:25,358 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 03:37:25,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-07-12 03:37:25,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 03:37:25,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-07-12 03:37:25,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2022-07-12 03:37:25,360 INFO L87 Difference]: Start difference. First operand 51 states and 65 transitions. Second operand has 16 states, 16 states have (on average 4.6875) internal successors, (75), 16 states have internal predecessors, (75), 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) [2022-07-12 03:37:25,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 03:37:25,582 INFO L93 Difference]: Finished difference Result 102 states and 127 transitions. [2022-07-12 03:37:25,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-12 03:37:25,583 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.6875) internal successors, (75), 16 states have internal predecessors, (75), 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 38 [2022-07-12 03:37:25,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 03:37:25,583 INFO L225 Difference]: With dead ends: 102 [2022-07-12 03:37:25,583 INFO L226 Difference]: Without dead ends: 78 [2022-07-12 03:37:25,584 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=280, Unknown=0, NotChecked=0, Total=342 [2022-07-12 03:37:25,584 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 61 mSDsluCounter, 282 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 320 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 56 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 03:37:25,584 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 320 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 84 Invalid, 0 Unknown, 56 Unchecked, 0.1s Time] [2022-07-12 03:37:25,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2022-07-12 03:37:25,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 73. [2022-07-12 03:37:25,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 72 states have (on average 1.2777777777777777) internal successors, (92), 72 states have internal predecessors, (92), 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) [2022-07-12 03:37:25,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 92 transitions. [2022-07-12 03:37:25,590 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 92 transitions. Word has length 38 [2022-07-12 03:37:25,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 03:37:25,590 INFO L495 AbstractCegarLoop]: Abstraction has 73 states and 92 transitions. [2022-07-12 03:37:25,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.6875) internal successors, (75), 16 states have internal predecessors, (75), 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) [2022-07-12 03:37:25,590 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 92 transitions. [2022-07-12 03:37:25,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-07-12 03:37:25,591 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 03:37:25,591 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 03:37:25,610 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-12 03:37:25,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 03:37:25,808 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 03:37:25,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 03:37:25,808 INFO L85 PathProgramCache]: Analyzing trace with hash 941641751, now seen corresponding path program 1 times [2022-07-12 03:37:25,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 03:37:25,809 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95706258] [2022-07-12 03:37:25,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 03:37:25,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 03:37:25,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 03:37:25,965 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 8 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 03:37:25,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 03:37:25,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95706258] [2022-07-12 03:37:25,965 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [95706258] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 03:37:25,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [75559479] [2022-07-12 03:37:25,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 03:37:25,965 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 03:37:25,965 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 03:37:25,967 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) [2022-07-12 03:37:26,021 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-12 03:37:26,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 03:37:26,070 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 54 conjunts are in the unsatisfiable core [2022-07-12 03:37:26,072 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 03:37:26,098 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 [2022-07-12 03:37:26,101 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 [2022-07-12 03:37:26,105 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 [2022-07-12 03:37:26,155 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 [2022-07-12 03:37:26,158 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 [2022-07-12 03:37:26,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:37:26,162 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 [2022-07-12 03:37:26,165 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:37:26,166 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 [2022-07-12 03:37:26,173 INFO L356 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2022-07-12 03:37:26,173 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 15 treesize of output 15 [2022-07-12 03:37:26,447 INFO L356 Elim1Store]: treesize reduction 17, result has 15.0 percent of original size [2022-07-12 03:37:26,448 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 61 treesize of output 35 [2022-07-12 03:37:26,453 INFO L356 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-07-12 03:37:26,454 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 26 treesize of output 16 [2022-07-12 03:37:26,457 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 8 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 03:37:26,457 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 03:37:26,529 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-12 03:37:26,530 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 13 treesize of output 17 [2022-07-12 03:37:26,538 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-12 03:37:26,538 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 13 treesize of output 17 [2022-07-12 03:37:26,693 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-12 03:37:26,694 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 18 treesize of output 19 [2022-07-12 03:37:26,695 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-12 03:37:26,697 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 16 treesize of output 8 [2022-07-12 03:37:26,710 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-12 03:37:26,711 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 24 treesize of output 23 [2022-07-12 03:37:26,712 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-12 03:37:26,714 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 20 treesize of output 8 [2022-07-12 03:37:26,723 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 8 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 03:37:26,723 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [75559479] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 03:37:26,723 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 03:37:26,723 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 8] total 16 [2022-07-12 03:37:26,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715621476] [2022-07-12 03:37:26,725 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 03:37:26,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-07-12 03:37:26,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 03:37:26,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-07-12 03:37:26,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2022-07-12 03:37:26,732 INFO L87 Difference]: Start difference. First operand 73 states and 92 transitions. Second operand has 16 states, 16 states have (on average 4.6875) internal successors, (75), 16 states have internal predecessors, (75), 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) [2022-07-12 03:37:26,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 03:37:26,925 INFO L93 Difference]: Finished difference Result 97 states and 120 transitions. [2022-07-12 03:37:26,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-12 03:37:26,925 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.6875) internal successors, (75), 16 states have internal predecessors, (75), 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 38 [2022-07-12 03:37:26,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 03:37:26,926 INFO L225 Difference]: With dead ends: 97 [2022-07-12 03:37:26,926 INFO L226 Difference]: Without dead ends: 61 [2022-07-12 03:37:26,926 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=62, Invalid=280, Unknown=0, NotChecked=0, Total=342 [2022-07-12 03:37:26,926 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 58 mSDsluCounter, 282 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 315 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 18 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 03:37:26,927 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 315 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 116 Invalid, 0 Unknown, 18 Unchecked, 0.1s Time] [2022-07-12 03:37:26,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2022-07-12 03:37:26,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 56. [2022-07-12 03:37:26,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 55 states have (on average 1.309090909090909) internal successors, (72), 55 states have internal predecessors, (72), 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) [2022-07-12 03:37:26,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 72 transitions. [2022-07-12 03:37:26,930 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 72 transitions. Word has length 38 [2022-07-12 03:37:26,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 03:37:26,930 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 72 transitions. [2022-07-12 03:37:26,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.6875) internal successors, (75), 16 states have internal predecessors, (75), 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) [2022-07-12 03:37:26,930 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 72 transitions. [2022-07-12 03:37:26,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-07-12 03:37:26,931 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 03:37:26,931 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 03:37:26,951 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-12 03:37:27,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-07-12 03:37:27,139 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 03:37:27,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 03:37:27,140 INFO L85 PathProgramCache]: Analyzing trace with hash 1704598909, now seen corresponding path program 4 times [2022-07-12 03:37:27,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 03:37:27,140 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884631830] [2022-07-12 03:37:27,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 03:37:27,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 03:37:27,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 03:37:27,467 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 14 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 03:37:27,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 03:37:27,468 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884631830] [2022-07-12 03:37:27,468 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [884631830] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 03:37:27,468 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [256160546] [2022-07-12 03:37:27,468 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-07-12 03:37:27,468 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 03:37:27,469 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 03:37:27,484 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) [2022-07-12 03:37:27,508 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-12 03:37:27,608 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-07-12 03:37:27,609 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-12 03:37:27,611 INFO L263 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 80 conjunts are in the unsatisfiable core [2022-07-12 03:37:27,614 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 03:37:27,621 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:37:27,621 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:37:27,624 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:37:27,624 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 26 [2022-07-12 03:37:27,628 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 [2022-07-12 03:37:27,692 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 [2022-07-12 03:37:27,696 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 [2022-07-12 03:37:27,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:37:27,699 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 32 treesize of output 28 [2022-07-12 03:37:27,710 INFO L356 Elim1Store]: treesize reduction 30, result has 37.5 percent of original size [2022-07-12 03:37:27,710 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 21 treesize of output 29 [2022-07-12 03:37:27,801 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 [2022-07-12 03:37:27,805 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 [2022-07-12 03:37:27,808 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:37:27,809 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 59 treesize of output 49 [2022-07-12 03:37:27,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:37:27,819 INFO L356 Elim1Store]: treesize reduction 4, result has 75.0 percent of original size [2022-07-12 03:37:27,820 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 22 [2022-07-12 03:37:27,824 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 40 treesize of output 32 [2022-07-12 03:37:27,827 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:37:27,828 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 [2022-07-12 03:37:28,292 INFO L356 Elim1Store]: treesize reduction 40, result has 58.8 percent of original size [2022-07-12 03:37:28,293 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 7 new quantified variables, introduced 10 case distinctions, treesize of input 163 treesize of output 149 [2022-07-12 03:37:28,339 INFO L356 Elim1Store]: treesize reduction 40, result has 58.8 percent of original size [2022-07-12 03:37:28,340 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 5 new quantified variables, introduced 10 case distinctions, treesize of input 156 treesize of output 184 [2022-07-12 03:37:29,013 INFO L356 Elim1Store]: treesize reduction 46, result has 13.2 percent of original size [2022-07-12 03:37:29,013 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 4 new quantified variables, introduced 6 case distinctions, treesize of input 60 treesize of output 40 [2022-07-12 03:37:29,018 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 15 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 03:37:29,019 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 03:37:29,202 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-12 03:37:29,202 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 67 treesize of output 67 [2022-07-12 03:37:29,206 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-12 03:37:29,206 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 61 treesize of output 61 [2022-07-12 03:37:29,219 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_arrayElimArr_15 (Array Int Int)) (|v_ULTIMATE.start_main_~l~0#1.base_27| Int) (v_arrayElimArr_16 (Array Int Int)) (v_ArrVal_570 (Array Int Int))) (let ((.cse0 (select (store |c_#memory_int| |v_ULTIMATE.start_main_~l~0#1.base_27| v_ArrVal_570) (select (select (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_main_~l~0#1.base_27| v_arrayElimArr_15) |c_ULTIMATE.start_main_~l~0#1.base|) |c_ULTIMATE.start_main_~l~0#1.offset|))) (.cse1 (select (select (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_main_~l~0#1.base_27| v_arrayElimArr_16) |c_ULTIMATE.start_main_~l~0#1.base|) |c_ULTIMATE.start_main_~l~0#1.offset|))) (or (not (= (select v_arrayElimArr_15 0) |c_ULTIMATE.start_main_~l~0#1.base|)) (not (= 3 (select .cse0 (+ .cse1 8)))) (not (= 1 (select .cse0 (+ .cse1 4)))) (not (= (select v_arrayElimArr_16 0) |c_ULTIMATE.start_main_~l~0#1.offset|)) (not (= (select |c_#valid| |v_ULTIMATE.start_main_~l~0#1.base_27|) 0))))) is different from false [2022-07-12 03:37:29,268 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-12 03:37:29,269 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 137 treesize of output 121 [2022-07-12 03:37:29,271 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-12 03:37:29,272 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 115 treesize of output 91 [2022-07-12 03:37:29,274 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 106 treesize of output 86 [2022-07-12 03:37:29,278 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-12 03:37:29,278 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 71 treesize of output 61 [2022-07-12 03:37:29,280 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-12 03:37:29,281 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 55 treesize of output 37 [2022-07-12 03:37:29,353 INFO L356 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2022-07-12 03:37:29,354 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 57 treesize of output 1 [2022-07-12 03:37:29,355 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 15 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 8 not checked. [2022-07-12 03:37:29,355 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [256160546] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 03:37:29,355 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 03:37:29,355 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 11, 11] total 30 [2022-07-12 03:37:29,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610437690] [2022-07-12 03:37:29,356 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 03:37:29,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-07-12 03:37:29,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 03:37:29,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-07-12 03:37:29,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=734, Unknown=1, NotChecked=54, Total=870 [2022-07-12 03:37:29,357 INFO L87 Difference]: Start difference. First operand 56 states and 72 transitions. Second operand has 30 states, 30 states have (on average 3.6666666666666665) internal successors, (110), 30 states have internal predecessors, (110), 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) [2022-07-12 03:37:41,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 03:37:41,368 INFO L93 Difference]: Finished difference Result 509 states and 620 transitions. [2022-07-12 03:37:41,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 145 states. [2022-07-12 03:37:41,368 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 3.6666666666666665) internal successors, (110), 30 states have internal predecessors, (110), 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 43 [2022-07-12 03:37:41,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 03:37:41,370 INFO L225 Difference]: With dead ends: 509 [2022-07-12 03:37:41,370 INFO L226 Difference]: Without dead ends: 494 [2022-07-12 03:37:41,380 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 82 SyntacticMatches, 4 SemanticMatches, 167 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 10492 ImplicationChecksByTransitivity, 11.8s TimeCoverageRelationStatistics Valid=3919, Invalid=24140, Unknown=1, NotChecked=332, Total=28392 [2022-07-12 03:37:41,381 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 884 mSDsluCounter, 722 mSDsCounter, 0 mSdLazyCounter, 521 mSolverCounterSat, 174 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 884 SdHoareTripleChecker+Valid, 765 SdHoareTripleChecker+Invalid, 1088 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 174 IncrementalHoareTripleChecker+Valid, 521 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 393 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-12 03:37:41,381 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [884 Valid, 765 Invalid, 1088 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [174 Valid, 521 Invalid, 0 Unknown, 393 Unchecked, 0.6s Time] [2022-07-12 03:37:41,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 494 states. [2022-07-12 03:37:41,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 494 to 137. [2022-07-12 03:37:41,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 136 states have (on average 1.3602941176470589) internal successors, (185), 136 states have internal predecessors, (185), 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) [2022-07-12 03:37:41,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 185 transitions. [2022-07-12 03:37:41,417 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 185 transitions. Word has length 43 [2022-07-12 03:37:41,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 03:37:41,419 INFO L495 AbstractCegarLoop]: Abstraction has 137 states and 185 transitions. [2022-07-12 03:37:41,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 3.6666666666666665) internal successors, (110), 30 states have internal predecessors, (110), 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) [2022-07-12 03:37:41,419 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 185 transitions. [2022-07-12 03:37:41,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-07-12 03:37:41,422 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 03:37:41,422 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 03:37:41,442 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-12 03:37:41,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 03:37:41,637 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 03:37:41,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 03:37:41,637 INFO L85 PathProgramCache]: Analyzing trace with hash -781342395, now seen corresponding path program 2 times [2022-07-12 03:37:41,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 03:37:41,637 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589678233] [2022-07-12 03:37:41,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 03:37:41,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 03:37:41,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 03:37:42,009 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 11 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 03:37:42,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 03:37:42,009 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589678233] [2022-07-12 03:37:42,009 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1589678233] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 03:37:42,009 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1726487116] [2022-07-12 03:37:42,009 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-12 03:37:42,009 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 03:37:42,009 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 03:37:42,011 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) [2022-07-12 03:37:42,026 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-12 03:37:42,120 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-12 03:37:42,120 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-12 03:37:42,121 INFO L263 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 82 conjunts are in the unsatisfiable core [2022-07-12 03:37:42,127 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 03:37:42,138 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:37:42,138 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:37:42,139 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:37:42,140 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 26 [2022-07-12 03:37:42,144 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 [2022-07-12 03:37:42,199 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 [2022-07-12 03:37:42,202 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 [2022-07-12 03:37:42,214 INFO L356 Elim1Store]: treesize reduction 30, result has 37.5 percent of original size [2022-07-12 03:37:42,214 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 21 treesize of output 29 [2022-07-12 03:37:42,216 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 32 treesize of output 28 [2022-07-12 03:37:42,322 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 [2022-07-12 03:37:42,325 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 [2022-07-12 03:37:42,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:37:42,329 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 36 treesize of output 30 [2022-07-12 03:37:42,343 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:37:42,343 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 59 treesize of output 49 [2022-07-12 03:37:42,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:37:42,351 INFO L356 Elim1Store]: treesize reduction 4, result has 75.0 percent of original size [2022-07-12 03:37:42,352 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 22 [2022-07-12 03:37:42,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:37:42,356 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 [2022-07-12 03:37:42,777 INFO L356 Elim1Store]: treesize reduction 40, result has 58.8 percent of original size [2022-07-12 03:37:42,778 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 7 new quantified variables, introduced 10 case distinctions, treesize of input 163 treesize of output 149 [2022-07-12 03:37:42,824 INFO L356 Elim1Store]: treesize reduction 40, result has 58.8 percent of original size [2022-07-12 03:37:42,825 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 5 new quantified variables, introduced 10 case distinctions, treesize of input 156 treesize of output 184 [2022-07-12 03:37:43,410 INFO L356 Elim1Store]: treesize reduction 46, result has 13.2 percent of original size [2022-07-12 03:37:43,410 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 4 new quantified variables, introduced 6 case distinctions, treesize of input 60 treesize of output 40 [2022-07-12 03:37:43,414 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 13 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 03:37:43,414 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 03:37:43,549 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-12 03:37:43,549 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 67 treesize of output 67 [2022-07-12 03:37:43,553 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-12 03:37:43,553 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 61 treesize of output 61 [2022-07-12 03:37:43,563 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_arrayElimArr_22 (Array Int Int)) (v_ArrVal_699 (Array Int Int)) (v_arrayElimArr_23 (Array Int Int)) (|v_ULTIMATE.start_main_~l~0#1.base_32| Int)) (let ((.cse0 (select (store |c_#memory_int| |v_ULTIMATE.start_main_~l~0#1.base_32| v_ArrVal_699) (select (select (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_main_~l~0#1.base_32| v_arrayElimArr_22) |c_ULTIMATE.start_main_~l~0#1.base|) |c_ULTIMATE.start_main_~l~0#1.offset|))) (.cse1 (select (select (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_main_~l~0#1.base_32| v_arrayElimArr_23) |c_ULTIMATE.start_main_~l~0#1.base|) |c_ULTIMATE.start_main_~l~0#1.offset|))) (or (not (= (select .cse0 (+ .cse1 4)) 0)) (not (= (select .cse0 (+ .cse1 8)) 2)) (not (= (select |c_#valid| |v_ULTIMATE.start_main_~l~0#1.base_32|) 0)) (not (= |c_ULTIMATE.start_main_~l~0#1.offset| (select v_arrayElimArr_23 0))) (not (= (select v_arrayElimArr_22 0) |c_ULTIMATE.start_main_~l~0#1.base|))))) is different from false [2022-07-12 03:37:43,616 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-12 03:37:43,617 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 129 treesize of output 115 [2022-07-12 03:37:43,620 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-12 03:37:43,621 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 109 treesize of output 87 [2022-07-12 03:37:43,624 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 102 treesize of output 82 [2022-07-12 03:37:43,628 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-12 03:37:43,628 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 67 treesize of output 59 [2022-07-12 03:37:43,630 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-12 03:37:43,631 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 53 treesize of output 37 [2022-07-12 03:37:43,728 INFO L356 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2022-07-12 03:37:43,729 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 57 treesize of output 1 [2022-07-12 03:37:43,729 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 13 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 8 not checked. [2022-07-12 03:37:43,730 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1726487116] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 03:37:43,730 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 03:37:43,730 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 11, 11] total 26 [2022-07-12 03:37:43,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183731805] [2022-07-12 03:37:43,730 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 03:37:43,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-07-12 03:37:43,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 03:37:43,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-07-12 03:37:43,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=529, Unknown=3, NotChecked=46, Total=650 [2022-07-12 03:37:43,732 INFO L87 Difference]: Start difference. First operand 137 states and 185 transitions. Second operand has 26 states, 26 states have (on average 4.1923076923076925) internal successors, (109), 26 states have internal predecessors, (109), 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) [2022-07-12 03:37:52,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 03:37:52,170 INFO L93 Difference]: Finished difference Result 514 states and 621 transitions. [2022-07-12 03:37:52,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 166 states. [2022-07-12 03:37:52,170 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 4.1923076923076925) internal successors, (109), 26 states have internal predecessors, (109), 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 45 [2022-07-12 03:37:52,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 03:37:52,172 INFO L225 Difference]: With dead ends: 514 [2022-07-12 03:37:52,172 INFO L226 Difference]: Without dead ends: 512 [2022-07-12 03:37:52,177 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 273 GetRequests, 89 SyntacticMatches, 3 SemanticMatches, 181 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 13534 ImplicationChecksByTransitivity, 8.2s TimeCoverageRelationStatistics Valid=4108, Invalid=28835, Unknown=3, NotChecked=360, Total=33306 [2022-07-12 03:37:52,178 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 568 mSDsluCounter, 543 mSDsCounter, 0 mSdLazyCounter, 403 mSolverCounterSat, 364 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 568 SdHoareTripleChecker+Valid, 580 SdHoareTripleChecker+Invalid, 1172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 364 IncrementalHoareTripleChecker+Valid, 403 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 405 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-12 03:37:52,178 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [568 Valid, 580 Invalid, 1172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [364 Valid, 403 Invalid, 0 Unknown, 405 Unchecked, 0.5s Time] [2022-07-12 03:37:52,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 512 states. [2022-07-12 03:37:52,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 512 to 132. [2022-07-12 03:37:52,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 131 states have (on average 1.366412213740458) internal successors, (179), 131 states have internal predecessors, (179), 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) [2022-07-12 03:37:52,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 179 transitions. [2022-07-12 03:37:52,203 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 179 transitions. Word has length 45 [2022-07-12 03:37:52,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 03:37:52,204 INFO L495 AbstractCegarLoop]: Abstraction has 132 states and 179 transitions. [2022-07-12 03:37:52,204 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 4.1923076923076925) internal successors, (109), 26 states have internal predecessors, (109), 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) [2022-07-12 03:37:52,204 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 179 transitions. [2022-07-12 03:37:52,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-07-12 03:37:52,205 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 03:37:52,205 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 03:37:52,224 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-07-12 03:37:52,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 03:37:52,409 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 03:37:52,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 03:37:52,409 INFO L85 PathProgramCache]: Analyzing trace with hash 169017141, now seen corresponding path program 1 times [2022-07-12 03:37:52,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 03:37:52,410 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529995173] [2022-07-12 03:37:52,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 03:37:52,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 03:37:52,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 03:37:52,637 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 17 proven. 35 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-12 03:37:52,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 03:37:52,638 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529995173] [2022-07-12 03:37:52,638 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [529995173] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 03:37:52,638 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [770265038] [2022-07-12 03:37:52,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 03:37:52,639 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 03:37:52,639 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 03:37:52,640 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) [2022-07-12 03:37:52,641 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-07-12 03:37:52,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 03:37:52,763 INFO L263 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 78 conjunts are in the unsatisfiable core [2022-07-12 03:37:52,769 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 03:37:52,775 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:37:52,775 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:37:52,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:37:52,776 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 26 [2022-07-12 03:37:52,781 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 [2022-07-12 03:37:52,844 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 [2022-07-12 03:37:52,848 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 [2022-07-12 03:37:52,852 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:37:52,852 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 32 treesize of output 28 [2022-07-12 03:37:52,865 INFO L356 Elim1Store]: treesize reduction 30, result has 37.5 percent of original size [2022-07-12 03:37:52,865 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 21 treesize of output 29 [2022-07-12 03:37:52,957 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 [2022-07-12 03:37:52,960 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 [2022-07-12 03:37:52,964 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:37:52,964 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 [2022-07-12 03:37:52,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:37:52,971 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 59 treesize of output 49 [2022-07-12 03:37:52,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:37:52,978 INFO L356 Elim1Store]: treesize reduction 4, result has 75.0 percent of original size [2022-07-12 03:37:52,979 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 22 [2022-07-12 03:37:52,982 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 40 treesize of output 32 [2022-07-12 03:37:53,438 INFO L356 Elim1Store]: treesize reduction 48, result has 62.8 percent of original size [2022-07-12 03:37:53,439 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 5 new quantified variables, introduced 10 case distinctions, treesize of input 163 treesize of output 207 [2022-07-12 03:37:53,497 INFO L356 Elim1Store]: treesize reduction 40, result has 58.8 percent of original size [2022-07-12 03:37:53,497 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 7 new quantified variables, introduced 10 case distinctions, treesize of input 214 treesize of output 184 [2022-07-12 03:37:54,427 INFO L356 Elim1Store]: treesize reduction 46, result has 13.2 percent of original size [2022-07-12 03:37:54,428 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 4 new quantified variables, introduced 6 case distinctions, treesize of input 60 treesize of output 40 [2022-07-12 03:37:54,431 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 19 proven. 33 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-12 03:37:54,432 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 03:37:54,615 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-12 03:37:54,615 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 67 treesize of output 67 [2022-07-12 03:37:54,619 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-12 03:37:54,619 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 61 treesize of output 61 [2022-07-12 03:37:54,630 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_827 (Array Int Int)) (v_arrayElimArr_29 (Array Int Int)) (|v_ULTIMATE.start_main_~l~0#1.base_37| Int) (v_arrayElimArr_30 (Array Int Int))) (let ((.cse0 (select (store |c_#memory_int| |v_ULTIMATE.start_main_~l~0#1.base_37| v_ArrVal_827) (select (select (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_main_~l~0#1.base_37| v_arrayElimArr_29) |c_ULTIMATE.start_main_~l~0#1.base|) |c_ULTIMATE.start_main_~l~0#1.offset|))) (.cse1 (select (select (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_main_~l~0#1.base_37| v_arrayElimArr_30) |c_ULTIMATE.start_main_~l~0#1.base|) |c_ULTIMATE.start_main_~l~0#1.offset|))) (or (not (= (select |c_#valid| |v_ULTIMATE.start_main_~l~0#1.base_37|) 0)) (not (= |c_ULTIMATE.start_main_~l~0#1.base| (select v_arrayElimArr_29 0))) (not (= |c_ULTIMATE.start_main_~l~0#1.offset| (select v_arrayElimArr_30 0))) (not (= (select .cse0 (+ .cse1 4)) 1)) (not (= 3 (select .cse0 (+ .cse1 8))))))) is different from false [2022-07-12 03:37:54,678 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-12 03:37:54,678 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 137 treesize of output 121 [2022-07-12 03:37:54,681 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-12 03:37:54,682 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 115 treesize of output 91 [2022-07-12 03:37:54,684 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 106 treesize of output 86 [2022-07-12 03:37:54,688 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-12 03:37:54,689 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 71 treesize of output 61 [2022-07-12 03:37:54,691 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-12 03:37:54,692 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 55 treesize of output 37 [2022-07-12 03:37:54,701 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_816 (Array Int Int)) (v_ArrVal_827 (Array Int Int)) (v_arrayElimCell_113 Int) (|v_ULTIMATE.start_main_~l~0#1.base_37| Int)) (let ((.cse0 (select (store (store |c_#memory_int| v_arrayElimCell_113 v_ArrVal_816) |v_ULTIMATE.start_main_~l~0#1.base_37| v_ArrVal_827) |c_ULTIMATE.start_main_~l~0#1.base|))) (or (not (= (select .cse0 (+ |c_ULTIMATE.start_main_~l~0#1.offset| 4)) 1)) (not (= 3 (select .cse0 (+ |c_ULTIMATE.start_main_~l~0#1.offset| 8)))) (not (= (select (store |c_#valid| v_arrayElimCell_113 1) |v_ULTIMATE.start_main_~l~0#1.base_37|) 0)) (not (= (select |c_#valid| v_arrayElimCell_113) 0))))) is different from false [2022-07-12 03:37:54,771 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 19 proven. 16 refuted. 0 times theorem prover too weak. 4 trivial. 17 not checked. [2022-07-12 03:37:54,771 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [770265038] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 03:37:54,771 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 03:37:54,771 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 11, 11] total 30 [2022-07-12 03:37:54,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58931156] [2022-07-12 03:37:54,772 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 03:37:54,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-07-12 03:37:54,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 03:37:54,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-07-12 03:37:54,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=683, Unknown=2, NotChecked=106, Total=870 [2022-07-12 03:37:54,773 INFO L87 Difference]: Start difference. First operand 132 states and 179 transitions. Second operand has 30 states, 30 states have (on average 3.7666666666666666) internal successors, (113), 30 states have internal predecessors, (113), 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) [2022-07-12 03:38:00,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 03:38:00,506 INFO L93 Difference]: Finished difference Result 273 states and 344 transitions. [2022-07-12 03:38:00,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-07-12 03:38:00,507 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 3.7666666666666666) internal successors, (113), 30 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2022-07-12 03:38:00,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 03:38:00,508 INFO L225 Difference]: With dead ends: 273 [2022-07-12 03:38:00,508 INFO L226 Difference]: Without dead ends: 258 [2022-07-12 03:38:00,509 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 84 SyntacticMatches, 6 SemanticMatches, 60 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 693 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=732, Invalid=2814, Unknown=2, NotChecked=234, Total=3782 [2022-07-12 03:38:00,509 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 342 mSDsluCounter, 704 mSDsCounter, 0 mSdLazyCounter, 405 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 342 SdHoareTripleChecker+Valid, 745 SdHoareTripleChecker+Invalid, 656 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 405 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 172 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-12 03:38:00,509 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [342 Valid, 745 Invalid, 656 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 405 Invalid, 0 Unknown, 172 Unchecked, 0.4s Time] [2022-07-12 03:38:00,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2022-07-12 03:38:00,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 153. [2022-07-12 03:38:00,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 152 states have (on average 1.3421052631578947) internal successors, (204), 152 states have internal predecessors, (204), 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) [2022-07-12 03:38:00,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 204 transitions. [2022-07-12 03:38:00,546 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 204 transitions. Word has length 47 [2022-07-12 03:38:00,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 03:38:00,546 INFO L495 AbstractCegarLoop]: Abstraction has 153 states and 204 transitions. [2022-07-12 03:38:00,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 3.7666666666666666) internal successors, (113), 30 states have internal predecessors, (113), 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) [2022-07-12 03:38:00,547 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 204 transitions. [2022-07-12 03:38:00,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-07-12 03:38:00,547 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 03:38:00,547 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 03:38:00,566 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-07-12 03:38:00,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-07-12 03:38:00,763 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 03:38:00,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 03:38:00,763 INFO L85 PathProgramCache]: Analyzing trace with hash -24761863, now seen corresponding path program 1 times [2022-07-12 03:38:00,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 03:38:00,763 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467726830] [2022-07-12 03:38:00,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 03:38:00,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 03:38:00,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 03:38:00,993 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 17 proven. 35 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-12 03:38:00,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 03:38:00,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467726830] [2022-07-12 03:38:00,994 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1467726830] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 03:38:00,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2081447707] [2022-07-12 03:38:00,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 03:38:00,994 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 03:38:00,994 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 03:38:00,996 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 03:38:01,021 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-07-12 03:38:01,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 03:38:01,106 INFO L263 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 78 conjunts are in the unsatisfiable core [2022-07-12 03:38:01,109 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 03:38:01,114 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 [2022-07-12 03:38:01,116 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:38:01,117 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:38:01,117 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:38:01,118 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 26 [2022-07-12 03:38:01,175 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 [2022-07-12 03:38:01,185 INFO L356 Elim1Store]: treesize reduction 30, result has 37.5 percent of original size [2022-07-12 03:38:01,185 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 21 treesize of output 29 [2022-07-12 03:38:01,188 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 32 treesize of output 28 [2022-07-12 03:38:01,195 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 [2022-07-12 03:38:01,273 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 [2022-07-12 03:38:01,278 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 [2022-07-12 03:38:01,282 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:38:01,283 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 36 treesize of output 30 [2022-07-12 03:38:01,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:38:01,287 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 [2022-07-12 03:38:01,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:38:01,291 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 59 treesize of output 49 [2022-07-12 03:38:01,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:38:01,297 INFO L356 Elim1Store]: treesize reduction 4, result has 75.0 percent of original size [2022-07-12 03:38:01,298 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 22 [2022-07-12 03:38:01,703 INFO L356 Elim1Store]: treesize reduction 40, result has 58.8 percent of original size [2022-07-12 03:38:01,704 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 7 new quantified variables, introduced 10 case distinctions, treesize of input 163 treesize of output 149 [2022-07-12 03:38:01,743 INFO L356 Elim1Store]: treesize reduction 40, result has 58.8 percent of original size [2022-07-12 03:38:01,743 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 5 new quantified variables, introduced 10 case distinctions, treesize of input 156 treesize of output 184 [2022-07-12 03:38:02,557 INFO L356 Elim1Store]: treesize reduction 46, result has 13.2 percent of original size [2022-07-12 03:38:02,558 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 4 new quantified variables, introduced 6 case distinctions, treesize of input 60 treesize of output 40 [2022-07-12 03:38:02,560 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 19 proven. 33 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-12 03:38:02,561 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 03:38:02,779 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-12 03:38:02,779 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 67 treesize of output 67 [2022-07-12 03:38:02,797 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-12 03:38:02,798 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 61 treesize of output 61 [2022-07-12 03:38:02,808 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_952 (Array Int Int)) (v_arrayElimArr_35 (Array Int Int)) (v_arrayElimArr_36 (Array Int Int)) (|v_ULTIMATE.start_main_~l~0#1.base_42| Int)) (let ((.cse0 (select (store |c_#memory_int| |v_ULTIMATE.start_main_~l~0#1.base_42| v_ArrVal_952) (select (select (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_main_~l~0#1.base_42| v_arrayElimArr_35) |c_ULTIMATE.start_main_~l~0#1.base|) |c_ULTIMATE.start_main_~l~0#1.offset|))) (.cse1 (select (select (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_main_~l~0#1.base_42| v_arrayElimArr_36) |c_ULTIMATE.start_main_~l~0#1.base|) |c_ULTIMATE.start_main_~l~0#1.offset|))) (or (not (= (select v_arrayElimArr_36 0) |c_ULTIMATE.start_main_~l~0#1.offset|)) (not (= (select .cse0 (+ .cse1 4)) 1)) (not (= (select v_arrayElimArr_35 0) |c_ULTIMATE.start_main_~l~0#1.base|)) (not (= (select .cse0 (+ 8 .cse1)) 3)) (not (= (select |c_#valid| |v_ULTIMATE.start_main_~l~0#1.base_42|) 0))))) is different from false [2022-07-12 03:38:02,867 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-12 03:38:02,868 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 121 treesize of output 107 [2022-07-12 03:38:02,870 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-12 03:38:02,873 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 101 treesize of output 83 [2022-07-12 03:38:02,875 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 98 treesize of output 78 [2022-07-12 03:38:02,879 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-12 03:38:02,879 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 63 treesize of output 55 [2022-07-12 03:38:02,881 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-12 03:38:02,882 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 37 [2022-07-12 03:38:02,989 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 19 proven. 21 refuted. 0 times theorem prover too weak. 4 trivial. 12 not checked. [2022-07-12 03:38:02,989 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2081447707] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 03:38:02,989 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 03:38:02,989 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 11, 11] total 30 [2022-07-12 03:38:02,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282124111] [2022-07-12 03:38:02,991 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 03:38:02,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-07-12 03:38:02,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 03:38:02,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-07-12 03:38:02,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=733, Unknown=2, NotChecked=54, Total=870 [2022-07-12 03:38:02,992 INFO L87 Difference]: Start difference. First operand 153 states and 204 transitions. Second operand has 30 states, 30 states have (on average 3.7666666666666666) internal successors, (113), 30 states have internal predecessors, (113), 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) [2022-07-12 03:38:06,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 03:38:06,232 INFO L93 Difference]: Finished difference Result 266 states and 335 transitions. [2022-07-12 03:38:06,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-07-12 03:38:06,232 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 3.7666666666666666) internal successors, (113), 30 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2022-07-12 03:38:06,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 03:38:06,233 INFO L225 Difference]: With dead ends: 266 [2022-07-12 03:38:06,233 INFO L226 Difference]: Without dead ends: 251 [2022-07-12 03:38:06,234 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 84 SyntacticMatches, 4 SemanticMatches, 58 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 638 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=711, Invalid=2713, Unknown=2, NotChecked=114, Total=3540 [2022-07-12 03:38:06,234 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 331 mSDsluCounter, 529 mSDsCounter, 0 mSdLazyCounter, 340 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 331 SdHoareTripleChecker+Valid, 569 SdHoareTripleChecker+Invalid, 548 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 340 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 141 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-12 03:38:06,234 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [331 Valid, 569 Invalid, 548 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 340 Invalid, 0 Unknown, 141 Unchecked, 0.3s Time] [2022-07-12 03:38:06,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2022-07-12 03:38:06,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 151. [2022-07-12 03:38:06,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 150 states have (on average 1.3466666666666667) internal successors, (202), 150 states have internal predecessors, (202), 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) [2022-07-12 03:38:06,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 202 transitions. [2022-07-12 03:38:06,248 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 202 transitions. Word has length 47 [2022-07-12 03:38:06,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 03:38:06,248 INFO L495 AbstractCegarLoop]: Abstraction has 151 states and 202 transitions. [2022-07-12 03:38:06,249 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 3.7666666666666666) internal successors, (113), 30 states have internal predecessors, (113), 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) [2022-07-12 03:38:06,249 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 202 transitions. [2022-07-12 03:38:06,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-07-12 03:38:06,249 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 03:38:06,249 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 03:38:06,307 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-07-12 03:38:06,470 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-07-12 03:38:06,471 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 03:38:06,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 03:38:06,471 INFO L85 PathProgramCache]: Analyzing trace with hash 993328381, now seen corresponding path program 1 times [2022-07-12 03:38:06,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 03:38:06,471 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227001505] [2022-07-12 03:38:06,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 03:38:06,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 03:38:06,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 03:38:06,806 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 17 proven. 39 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-12 03:38:06,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 03:38:06,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227001505] [2022-07-12 03:38:06,807 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1227001505] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 03:38:06,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [183853970] [2022-07-12 03:38:06,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 03:38:06,807 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 03:38:06,807 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 03:38:06,808 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 03:38:06,841 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-07-12 03:38:06,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 03:38:06,932 INFO L263 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 80 conjunts are in the unsatisfiable core [2022-07-12 03:38:06,938 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 03:38:06,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:38:06,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:38:06,945 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:38:06,945 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 26 [2022-07-12 03:38:06,954 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 [2022-07-12 03:38:07,022 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 [2022-07-12 03:38:07,027 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 [2022-07-12 03:38:07,039 INFO L356 Elim1Store]: treesize reduction 30, result has 37.5 percent of original size [2022-07-12 03:38:07,040 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 21 treesize of output 29 [2022-07-12 03:38:07,042 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 32 treesize of output 28 [2022-07-12 03:38:07,153 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 [2022-07-12 03:38:07,157 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2022-07-12 03:38:07,161 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:38:07,162 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 59 treesize of output 49 [2022-07-12 03:38:07,165 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:38:07,165 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 40 treesize of output 32 [2022-07-12 03:38:07,168 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:38:07,169 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 [2022-07-12 03:38:07,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:38:07,175 INFO L356 Elim1Store]: treesize reduction 4, result has 75.0 percent of original size [2022-07-12 03:38:07,175 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 22 [2022-07-12 03:38:07,651 INFO L356 Elim1Store]: treesize reduction 40, result has 58.8 percent of original size [2022-07-12 03:38:07,652 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 7 new quantified variables, introduced 10 case distinctions, treesize of input 163 treesize of output 149 [2022-07-12 03:38:07,718 INFO L356 Elim1Store]: treesize reduction 40, result has 58.8 percent of original size [2022-07-12 03:38:07,718 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 5 new quantified variables, introduced 10 case distinctions, treesize of input 156 treesize of output 184 [2022-07-12 03:38:08,399 INFO L356 Elim1Store]: treesize reduction 46, result has 13.2 percent of original size [2022-07-12 03:38:08,400 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 4 new quantified variables, introduced 6 case distinctions, treesize of input 60 treesize of output 40 [2022-07-12 03:38:08,403 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 17 proven. 39 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-12 03:38:08,410 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 03:38:08,547 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-12 03:38:08,548 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 67 treesize of output 67 [2022-07-12 03:38:08,551 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-12 03:38:08,551 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 61 treesize of output 61 [2022-07-12 03:38:08,560 WARN L833 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~l~0#1.base_47| Int) (v_ArrVal_1084 (Array Int Int)) (v_arrayElimArr_42 (Array Int Int)) (v_arrayElimArr_41 (Array Int Int))) (let ((.cse0 (select (store |c_#memory_int| |v_ULTIMATE.start_main_~l~0#1.base_47| v_ArrVal_1084) (select (select (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_main_~l~0#1.base_47| v_arrayElimArr_41) |c_ULTIMATE.start_main_~l~0#1.base|) |c_ULTIMATE.start_main_~l~0#1.offset|))) (.cse1 (select (select (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_main_~l~0#1.base_47| v_arrayElimArr_42) |c_ULTIMATE.start_main_~l~0#1.base|) |c_ULTIMATE.start_main_~l~0#1.offset|))) (or (not (= 2 (select .cse0 (+ .cse1 8)))) (not (= |c_ULTIMATE.start_main_~l~0#1.offset| (select v_arrayElimArr_42 0))) (not (= (select .cse0 (+ .cse1 4)) 0)) (not (= |c_ULTIMATE.start_main_~l~0#1.base| (select v_arrayElimArr_41 0))) (not (= (select |c_#valid| |v_ULTIMATE.start_main_~l~0#1.base_47|) 0))))) is different from false [2022-07-12 03:38:08,603 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-12 03:38:08,603 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 121 treesize of output 107 [2022-07-12 03:38:08,605 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-12 03:38:08,606 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 101 treesize of output 83 [2022-07-12 03:38:08,608 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 98 treesize of output 78 [2022-07-12 03:38:08,612 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-12 03:38:08,612 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 63 treesize of output 55 [2022-07-12 03:38:08,614 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-12 03:38:08,615 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 37 [2022-07-12 03:38:08,706 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 17 proven. 27 refuted. 0 times theorem prover too weak. 4 trivial. 12 not checked. [2022-07-12 03:38:08,706 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [183853970] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 03:38:08,706 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 03:38:08,706 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 11, 11] total 24 [2022-07-12 03:38:08,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072996264] [2022-07-12 03:38:08,707 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 03:38:08,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-07-12 03:38:08,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 03:38:08,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-07-12 03:38:08,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=442, Unknown=1, NotChecked=42, Total=552 [2022-07-12 03:38:08,708 INFO L87 Difference]: Start difference. First operand 151 states and 202 transitions. Second operand has 24 states, 24 states have (on average 4.083333333333333) internal successors, (98), 24 states have internal predecessors, (98), 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) [2022-07-12 03:38:09,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 03:38:09,752 INFO L93 Difference]: Finished difference Result 193 states and 249 transitions. [2022-07-12 03:38:09,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-07-12 03:38:09,752 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 4.083333333333333) internal successors, (98), 24 states have internal predecessors, (98), 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 49 [2022-07-12 03:38:09,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 03:38:09,753 INFO L225 Difference]: With dead ends: 193 [2022-07-12 03:38:09,753 INFO L226 Difference]: Without dead ends: 191 [2022-07-12 03:38:09,753 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 90 SyntacticMatches, 3 SemanticMatches, 41 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 369 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=341, Invalid=1384, Unknown=1, NotChecked=80, Total=1806 [2022-07-12 03:38:09,754 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 109 mSDsluCounter, 426 mSDsCounter, 0 mSdLazyCounter, 214 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 464 SdHoareTripleChecker+Invalid, 407 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 105 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-12 03:38:09,754 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 464 Invalid, 407 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 214 Invalid, 0 Unknown, 105 Unchecked, 0.2s Time] [2022-07-12 03:38:09,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2022-07-12 03:38:09,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 131. [2022-07-12 03:38:09,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 130 states have (on average 1.3692307692307693) internal successors, (178), 130 states have internal predecessors, (178), 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) [2022-07-12 03:38:09,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 178 transitions. [2022-07-12 03:38:09,765 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 178 transitions. Word has length 49 [2022-07-12 03:38:09,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 03:38:09,765 INFO L495 AbstractCegarLoop]: Abstraction has 131 states and 178 transitions. [2022-07-12 03:38:09,766 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 4.083333333333333) internal successors, (98), 24 states have internal predecessors, (98), 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) [2022-07-12 03:38:09,766 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 178 transitions. [2022-07-12 03:38:09,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-07-12 03:38:09,766 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 03:38:09,766 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 03:38:09,787 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-07-12 03:38:09,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-07-12 03:38:09,987 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 03:38:09,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 03:38:09,988 INFO L85 PathProgramCache]: Analyzing trace with hash -544700735, now seen corresponding path program 2 times [2022-07-12 03:38:09,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 03:38:09,988 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333659185] [2022-07-12 03:38:09,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 03:38:09,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 03:38:10,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 03:38:10,360 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 17 proven. 39 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-12 03:38:10,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 03:38:10,361 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333659185] [2022-07-12 03:38:10,361 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [333659185] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 03:38:10,361 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [935815204] [2022-07-12 03:38:10,361 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-12 03:38:10,361 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 03:38:10,361 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 03:38:10,362 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 03:38:10,395 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-07-12 03:38:10,505 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-12 03:38:10,505 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-12 03:38:10,507 INFO L263 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 82 conjunts are in the unsatisfiable core [2022-07-12 03:38:10,511 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 03:38:10,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:38:10,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:38:10,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:38:10,523 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 26 [2022-07-12 03:38:10,527 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 [2022-07-12 03:38:10,594 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 [2022-07-12 03:38:10,602 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-07-12 03:38:10,603 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 66 treesize of output 66 [2022-07-12 03:38:10,614 INFO L356 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-07-12 03:38:10,614 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 71 treesize of output 73 [2022-07-12 03:38:10,618 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 [2022-07-12 03:38:10,720 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 [2022-07-12 03:38:10,724 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:38:10,725 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 110 treesize of output 96 [2022-07-12 03:38:10,735 INFO L356 Elim1Store]: treesize reduction 39, result has 25.0 percent of original size [2022-07-12 03:38:10,735 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 1 case distinctions, treesize of input 114 treesize of output 106 [2022-07-12 03:38:10,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:38:10,741 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 117 treesize of output 101 [2022-07-12 03:38:10,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:38:10,749 INFO L356 Elim1Store]: treesize reduction 4, result has 75.0 percent of original size [2022-07-12 03:38:10,749 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 122 treesize of output 106 [2022-07-12 03:38:10,754 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 [2022-07-12 03:38:11,284 INFO L356 Elim1Store]: treesize reduction 40, result has 58.8 percent of original size [2022-07-12 03:38:11,284 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 7 new quantified variables, introduced 10 case distinctions, treesize of input 187 treesize of output 165 [2022-07-12 03:38:11,330 INFO L356 Elim1Store]: treesize reduction 40, result has 58.8 percent of original size [2022-07-12 03:38:11,330 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 5 new quantified variables, introduced 10 case distinctions, treesize of input 168 treesize of output 188 [2022-07-12 03:38:12,204 INFO L356 Elim1Store]: treesize reduction 30, result has 9.1 percent of original size [2022-07-12 03:38:12,204 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 3 new quantified variables, introduced 3 case distinctions, treesize of input 62 treesize of output 37 [2022-07-12 03:38:12,209 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 17 proven. 39 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-12 03:38:12,210 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 03:38:12,315 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-12 03:38:12,316 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 67 treesize of output 67 [2022-07-12 03:38:12,321 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-12 03:38:12,321 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 61 treesize of output 61 [2022-07-12 03:38:12,344 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1207 (Array Int Int)) (v_arrayElimArr_46 (Array Int Int)) (v_arrayElimArr_47 (Array Int Int)) (|v_ULTIMATE.start_main_~l~0#1.base_52| Int)) (let ((.cse0 (select (store |c_#memory_int| |v_ULTIMATE.start_main_~l~0#1.base_52| v_ArrVal_1207) (select (select (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_main_~l~0#1.base_52| v_arrayElimArr_46) |c_ULTIMATE.start_main_~l~0#1.base|) |c_ULTIMATE.start_main_~l~0#1.offset|))) (.cse1 (select (select (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_main_~l~0#1.base_52| v_arrayElimArr_47) |c_ULTIMATE.start_main_~l~0#1.base|) |c_ULTIMATE.start_main_~l~0#1.offset|))) (or (not (= 2 (select .cse0 (+ .cse1 8)))) (not (= (select v_arrayElimArr_47 0) |c_ULTIMATE.start_main_~l~0#1.offset|)) (not (= (select v_arrayElimArr_46 0) |c_ULTIMATE.start_main_~l~0#1.base|)) (not (= (select .cse0 (+ .cse1 4)) 0)) (not (= (select |c_#valid| |v_ULTIMATE.start_main_~l~0#1.base_52|) 0))))) is different from false [2022-07-12 03:38:12,417 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-12 03:38:12,418 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 121 treesize of output 107 [2022-07-12 03:38:12,420 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-12 03:38:12,421 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 101 treesize of output 83 [2022-07-12 03:38:12,423 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 98 treesize of output 78 [2022-07-12 03:38:12,427 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-12 03:38:12,427 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 63 treesize of output 55 [2022-07-12 03:38:12,428 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-12 03:38:12,431 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 37 [2022-07-12 03:38:12,532 INFO L356 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2022-07-12 03:38:12,533 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 57 treesize of output 1 [2022-07-12 03:38:12,534 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 17 proven. 27 refuted. 0 times theorem prover too weak. 4 trivial. 12 not checked. [2022-07-12 03:38:12,534 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [935815204] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 03:38:12,534 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 03:38:12,534 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 11, 11] total 24 [2022-07-12 03:38:12,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640854222] [2022-07-12 03:38:12,534 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 03:38:12,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-07-12 03:38:12,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 03:38:12,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-07-12 03:38:12,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=440, Unknown=3, NotChecked=42, Total=552 [2022-07-12 03:38:12,539 INFO L87 Difference]: Start difference. First operand 131 states and 178 transitions. Second operand has 24 states, 24 states have (on average 4.083333333333333) internal successors, (98), 24 states have internal predecessors, (98), 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) [2022-07-12 03:38:16,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 03:38:16,657 INFO L93 Difference]: Finished difference Result 158 states and 208 transitions. [2022-07-12 03:38:16,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-07-12 03:38:16,657 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 4.083333333333333) internal successors, (98), 24 states have internal predecessors, (98), 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 49 [2022-07-12 03:38:16,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 03:38:16,658 INFO L225 Difference]: With dead ends: 158 [2022-07-12 03:38:16,658 INFO L226 Difference]: Without dead ends: 156 [2022-07-12 03:38:16,658 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 90 SyntacticMatches, 3 SemanticMatches, 40 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 338 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=313, Invalid=1328, Unknown=3, NotChecked=78, Total=1722 [2022-07-12 03:38:16,659 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 86 mSDsluCounter, 377 mSDsCounter, 0 mSdLazyCounter, 208 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 412 SdHoareTripleChecker+Invalid, 345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 66 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-12 03:38:16,659 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 412 Invalid, 345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 208 Invalid, 0 Unknown, 66 Unchecked, 0.2s Time] [2022-07-12 03:38:16,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2022-07-12 03:38:16,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 67. [2022-07-12 03:38:16,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 66 states have (on average 1.2878787878787878) internal successors, (85), 66 states have internal predecessors, (85), 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) [2022-07-12 03:38:16,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 85 transitions. [2022-07-12 03:38:16,684 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 85 transitions. Word has length 49 [2022-07-12 03:38:16,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 03:38:16,684 INFO L495 AbstractCegarLoop]: Abstraction has 67 states and 85 transitions. [2022-07-12 03:38:16,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 4.083333333333333) internal successors, (98), 24 states have internal predecessors, (98), 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) [2022-07-12 03:38:16,685 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 85 transitions. [2022-07-12 03:38:16,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-07-12 03:38:16,685 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 03:38:16,686 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 03:38:16,714 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-07-12 03:38:16,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-07-12 03:38:16,904 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 03:38:16,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 03:38:16,904 INFO L85 PathProgramCache]: Analyzing trace with hash 2085516585, now seen corresponding path program 5 times [2022-07-12 03:38:16,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 03:38:16,905 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973864153] [2022-07-12 03:38:16,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 03:38:16,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 03:38:16,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 03:38:17,196 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 12 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 03:38:17,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 03:38:17,196 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973864153] [2022-07-12 03:38:17,196 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1973864153] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 03:38:17,196 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1093936432] [2022-07-12 03:38:17,196 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-07-12 03:38:17,196 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 03:38:17,196 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 03:38:17,202 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 03:38:17,204 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-07-12 03:38:17,704 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-07-12 03:38:17,704 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-12 03:38:17,707 INFO L263 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 83 conjunts are in the unsatisfiable core [2022-07-12 03:38:17,710 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 03:38:17,724 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 [2022-07-12 03:38:17,727 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 [2022-07-12 03:38:17,730 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 [2022-07-12 03:38:17,772 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 [2022-07-12 03:38:17,776 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 [2022-07-12 03:38:17,779 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:38:17,783 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 [2022-07-12 03:38:17,787 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:38:17,788 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 [2022-07-12 03:38:17,801 INFO L356 Elim1Store]: treesize reduction 30, result has 37.5 percent of original size [2022-07-12 03:38:17,801 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 21 treesize of output 29 [2022-07-12 03:38:17,880 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 [2022-07-12 03:38:17,884 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 [2022-07-12 03:38:17,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:38:17,895 INFO L356 Elim1Store]: treesize reduction 25, result has 16.7 percent of original size [2022-07-12 03:38:17,895 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 56 treesize of output 52 [2022-07-12 03:38:17,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:38:17,904 INFO L356 Elim1Store]: treesize reduction 4, result has 75.0 percent of original size [2022-07-12 03:38:17,906 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 22 [2022-07-12 03:38:17,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:38:17,911 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 33 treesize of output 38 [2022-07-12 03:38:18,308 INFO L356 Elim1Store]: treesize reduction 85, result has 11.5 percent of original size [2022-07-12 03:38:18,309 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 132 treesize of output 74 [2022-07-12 03:38:18,323 INFO L356 Elim1Store]: treesize reduction 10, result has 41.2 percent of original size [2022-07-12 03:38:18,323 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 2 case distinctions, treesize of input 37 treesize of output 25 [2022-07-12 03:38:18,327 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 12 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 03:38:18,327 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 03:38:18,420 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-12 03:38:18,421 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 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 34 [2022-07-12 03:38:18,426 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-12 03:38:18,426 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 27 treesize of output 31 [2022-07-12 03:38:18,434 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-12 03:38:18,435 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 [2022-07-12 03:38:18,440 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-12 03:38:18,440 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 31 [2022-07-12 03:38:18,594 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-12 03:38:18,594 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 42 treesize of output 43 [2022-07-12 03:38:18,598 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-12 03:38:18,598 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 36 treesize of output 40 [2022-07-12 03:38:18,612 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-12 03:38:18,612 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 42 treesize of output 43 [2022-07-12 03:38:18,634 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-12 03:38:18,634 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 36 treesize of output 40 [2022-07-12 03:38:18,667 WARN L833 $PredicateComparison]: unable to prove that (and (forall ((v_arrayElimArr_55 (Array Int Int)) (v_arrayElimArr_56 (Array Int Int)) (v_arrayElimArr_59 (Array Int Int)) (v_arrayElimArr_60 (Array Int Int)) (|v_ULTIMATE.start_main_~l~0#1.base_58| Int)) (let ((.cse0 (select v_arrayElimArr_55 0))) (or (not (= (select v_arrayElimArr_56 0) 0)) (not (= (select |c_#valid| .cse0) 0)) (not (= |c_ULTIMATE.start_main_~l~0#1.offset| (select v_arrayElimArr_60 0))) (not (= (select v_arrayElimArr_59 0) |c_ULTIMATE.start_main_~l~0#1.base|)) (not (= (select (store |c_#valid| .cse0 1) |v_ULTIMATE.start_main_~l~0#1.base_58|) 0)) (= (select (let ((.cse1 (store (store |c_#memory_$Pointer$.base| .cse0 v_arrayElimArr_59) |v_ULTIMATE.start_main_~l~0#1.base_58| v_arrayElimArr_55))) (select .cse1 (select (select .cse1 .cse0) 0))) (select (select (store (store |c_#memory_$Pointer$.offset| .cse0 v_arrayElimArr_60) |v_ULTIMATE.start_main_~l~0#1.base_58| v_arrayElimArr_56) .cse0) 0)) 0)))) (forall ((v_arrayElimArr_57 (Array Int Int)) (v_arrayElimArr_58 (Array Int Int)) (|v_ULTIMATE.start_main_~l~0#1.base_58| Int) (v_arrayElimArr_62 (Array Int Int)) (v_arrayElimArr_61 (Array Int Int))) (let ((.cse3 (select v_arrayElimArr_57 0))) (or (not (= (select v_arrayElimArr_62 0) |c_ULTIMATE.start_main_~l~0#1.base|)) (= (let ((.cse2 (store (store |c_#memory_$Pointer$.offset| .cse3 v_arrayElimArr_61) |v_ULTIMATE.start_main_~l~0#1.base_58| v_arrayElimArr_58))) (select (select .cse2 (select (select (store (store |c_#memory_$Pointer$.base| .cse3 v_arrayElimArr_62) |v_ULTIMATE.start_main_~l~0#1.base_58| v_arrayElimArr_57) .cse3) 0)) (select (select .cse2 .cse3) 0))) 0) (not (= (select v_arrayElimArr_61 0) |c_ULTIMATE.start_main_~l~0#1.offset|)) (not (= (select |c_#valid| .cse3) 0)) (not (= (select v_arrayElimArr_58 0) 0)) (not (= (select (store |c_#valid| .cse3 1) |v_ULTIMATE.start_main_~l~0#1.base_58|) 0)))))) is different from false [2022-07-12 03:38:18,845 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-12 03:38:18,846 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 79 treesize of output 78 [2022-07-12 03:38:18,850 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-12 03:38:18,851 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 67 treesize of output 54 [2022-07-12 03:38:18,853 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-12 03:38:18,854 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 42 treesize of output 36 [2022-07-12 03:38:18,858 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-12 03:38:18,866 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 188 treesize of output 166 [2022-07-12 03:38:18,869 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 191 treesize of output 151 [2022-07-12 03:38:18,872 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 151 treesize of output 115 [2022-07-12 03:38:18,879 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-07-12 03:38:18,879 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 22 treesize of output 18 [2022-07-12 03:38:18,890 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-12 03:38:18,891 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 79 treesize of output 66 [2022-07-12 03:38:18,892 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-12 03:38:18,897 INFO L356 Elim1Store]: treesize reduction 32, result has 11.1 percent of original size [2022-07-12 03:38:18,897 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 256 treesize of output 222 [2022-07-12 03:38:18,903 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-12 03:38:18,903 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 214 treesize of output 152 [2022-07-12 03:38:18,906 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-12 03:38:18,907 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 80 treesize of output 74 [2022-07-12 03:38:18,909 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 99 treesize of output 83 [2022-07-12 03:38:18,912 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 64 treesize of output 54 [2022-07-12 03:38:18,918 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-07-12 03:38:18,919 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 24 treesize of output 26 [2022-07-12 03:38:18,930 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 12 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 13 not checked. [2022-07-12 03:38:18,930 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1093936432] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 03:38:18,930 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 03:38:18,930 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10, 10] total 21 [2022-07-12 03:38:18,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927071910] [2022-07-12 03:38:18,931 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 03:38:18,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-07-12 03:38:18,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 03:38:18,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-07-12 03:38:18,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=329, Unknown=1, NotChecked=36, Total=420 [2022-07-12 03:38:18,932 INFO L87 Difference]: Start difference. First operand 67 states and 85 transitions. Second operand has 21 states, 21 states have (on average 5.0476190476190474) internal successors, (106), 21 states have internal predecessors, (106), 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) [2022-07-12 03:38:19,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 03:38:19,184 INFO L93 Difference]: Finished difference Result 133 states and 164 transitions. [2022-07-12 03:38:19,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 03:38:19,185 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.0476190476190474) internal successors, (106), 21 states have internal predecessors, (106), 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 51 [2022-07-12 03:38:19,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 03:38:19,186 INFO L225 Difference]: With dead ends: 133 [2022-07-12 03:38:19,186 INFO L226 Difference]: Without dead ends: 109 [2022-07-12 03:38:19,186 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 95 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=79, Invalid=476, Unknown=1, NotChecked=44, Total=600 [2022-07-12 03:38:19,186 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 59 mSDsluCounter, 542 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 594 SdHoareTripleChecker+Invalid, 287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 160 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 03:38:19,187 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 594 Invalid, 287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 122 Invalid, 0 Unknown, 160 Unchecked, 0.1s Time] [2022-07-12 03:38:19,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2022-07-12 03:38:19,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 100. [2022-07-12 03:38:19,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 99 states have (on average 1.2626262626262625) internal successors, (125), 99 states have internal predecessors, (125), 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) [2022-07-12 03:38:19,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 125 transitions. [2022-07-12 03:38:19,200 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 125 transitions. Word has length 51 [2022-07-12 03:38:19,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 03:38:19,200 INFO L495 AbstractCegarLoop]: Abstraction has 100 states and 125 transitions. [2022-07-12 03:38:19,200 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.0476190476190474) internal successors, (106), 21 states have internal predecessors, (106), 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) [2022-07-12 03:38:19,200 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 125 transitions. [2022-07-12 03:38:19,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-07-12 03:38:19,201 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 03:38:19,201 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 03:38:19,222 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-07-12 03:38:19,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-07-12 03:38:19,420 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 03:38:19,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 03:38:19,420 INFO L85 PathProgramCache]: Analyzing trace with hash 1891737581, now seen corresponding path program 2 times [2022-07-12 03:38:19,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 03:38:19,421 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50435112] [2022-07-12 03:38:19,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 03:38:19,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 03:38:19,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 03:38:19,598 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 12 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 03:38:19,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 03:38:19,599 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50435112] [2022-07-12 03:38:19,599 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [50435112] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 03:38:19,599 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [127652547] [2022-07-12 03:38:19,599 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-12 03:38:19,599 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 03:38:19,599 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 03:38:19,600 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 03:38:19,601 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-07-12 03:38:19,730 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-12 03:38:19,731 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-12 03:38:19,732 INFO L263 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 81 conjunts are in the unsatisfiable core [2022-07-12 03:38:19,735 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 03:38:19,746 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 [2022-07-12 03:38:19,750 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 [2022-07-12 03:38:19,753 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 [2022-07-12 03:38:19,796 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 [2022-07-12 03:38:19,799 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 [2022-07-12 03:38:19,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:38:19,803 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 [2022-07-12 03:38:19,807 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:38:19,807 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 [2022-07-12 03:38:19,819 INFO L356 Elim1Store]: treesize reduction 30, result has 37.5 percent of original size [2022-07-12 03:38:19,819 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 21 treesize of output 29 [2022-07-12 03:38:19,891 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 [2022-07-12 03:38:19,895 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 [2022-07-12 03:38:19,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:38:19,905 INFO L356 Elim1Store]: treesize reduction 25, result has 16.7 percent of original size [2022-07-12 03:38:19,906 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 56 treesize of output 52 [2022-07-12 03:38:19,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:38:19,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:38:19,911 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 33 treesize of output 38 [2022-07-12 03:38:19,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:38:19,918 INFO L356 Elim1Store]: treesize reduction 4, result has 75.0 percent of original size [2022-07-12 03:38:19,919 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 22 [2022-07-12 03:38:20,263 INFO L356 Elim1Store]: treesize reduction 85, result has 11.5 percent of original size [2022-07-12 03:38:20,263 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 132 treesize of output 74 [2022-07-12 03:38:20,272 INFO L356 Elim1Store]: treesize reduction 10, result has 41.2 percent of original size [2022-07-12 03:38:20,272 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 37 treesize of output 25 [2022-07-12 03:38:20,276 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 12 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 03:38:20,276 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 03:38:20,354 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-12 03:38:20,355 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 [2022-07-12 03:38:20,359 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-12 03:38:20,359 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 30 treesize of output 31 [2022-07-12 03:38:20,367 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-12 03:38:20,368 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 34 [2022-07-12 03:38:20,371 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-12 03:38:20,371 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 27 treesize of output 31 [2022-07-12 03:38:20,507 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-12 03:38:20,507 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 42 treesize of output 43 [2022-07-12 03:38:20,511 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-12 03:38:20,512 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 36 treesize of output 40 [2022-07-12 03:38:20,525 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-12 03:38:20,525 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 42 treesize of output 43 [2022-07-12 03:38:20,529 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-12 03:38:20,529 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 36 treesize of output 40 [2022-07-12 03:38:20,561 WARN L833 $PredicateComparison]: unable to prove that (and (forall ((v_arrayElimArr_76 (Array Int Int)) (v_arrayElimArr_71 (Array Int Int)) (v_arrayElimArr_72 (Array Int Int)) (v_arrayElimArr_75 (Array Int Int)) (|v_ULTIMATE.start_main_~l~0#1.base_65| Int)) (let ((.cse0 (select v_arrayElimArr_71 0))) (or (not (= |c_ULTIMATE.start_main_~l~0#1.base| (select v_arrayElimArr_76 0))) (not (= (select |c_#valid| .cse0) 0)) (not (= (select v_arrayElimArr_72 0) 0)) (= (let ((.cse1 (store (store |c_#memory_$Pointer$.offset| .cse0 v_arrayElimArr_75) |v_ULTIMATE.start_main_~l~0#1.base_65| v_arrayElimArr_72))) (select (select .cse1 (select (select (store (store |c_#memory_$Pointer$.base| .cse0 v_arrayElimArr_76) |v_ULTIMATE.start_main_~l~0#1.base_65| v_arrayElimArr_71) .cse0) 0)) (select (select .cse1 .cse0) 0))) 0) (not (= (select (store |c_#valid| .cse0 1) |v_ULTIMATE.start_main_~l~0#1.base_65|) 0)) (not (= (select v_arrayElimArr_75 0) |c_ULTIMATE.start_main_~l~0#1.offset|))))) (forall ((v_arrayElimArr_77 (Array Int Int)) (v_arrayElimArr_78 (Array Int Int)) (v_arrayElimArr_73 (Array Int Int)) (|v_ULTIMATE.start_main_~l~0#1.base_65| Int) (v_arrayElimArr_74 (Array Int Int))) (let ((.cse2 (select v_arrayElimArr_73 0))) (or (not (= |c_ULTIMATE.start_main_~l~0#1.base| (select v_arrayElimArr_77 0))) (not (= (select |c_#valid| .cse2) 0)) (= (select (let ((.cse3 (store (store |c_#memory_$Pointer$.base| .cse2 v_arrayElimArr_77) |v_ULTIMATE.start_main_~l~0#1.base_65| v_arrayElimArr_73))) (select .cse3 (select (select .cse3 .cse2) 0))) (select (select (store (store |c_#memory_$Pointer$.offset| .cse2 v_arrayElimArr_78) |v_ULTIMATE.start_main_~l~0#1.base_65| v_arrayElimArr_74) .cse2) 0)) 0) (not (= (select (store |c_#valid| .cse2 1) |v_ULTIMATE.start_main_~l~0#1.base_65|) 0)) (not (= (select v_arrayElimArr_74 0) 0)) (not (= |c_ULTIMATE.start_main_~l~0#1.offset| (select v_arrayElimArr_78 0))))))) is different from false [2022-07-12 03:38:20,664 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-12 03:38:20,664 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 79 treesize of output 66 [2022-07-12 03:38:20,666 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-12 03:38:20,671 INFO L356 Elim1Store]: treesize reduction 32, result has 11.1 percent of original size [2022-07-12 03:38:20,671 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 256 treesize of output 222 [2022-07-12 03:38:20,676 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-12 03:38:20,676 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 214 treesize of output 152 [2022-07-12 03:38:20,678 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-12 03:38:20,679 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 80 treesize of output 74 [2022-07-12 03:38:20,682 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 99 treesize of output 83 [2022-07-12 03:38:20,685 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 64 treesize of output 54 [2022-07-12 03:38:20,688 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-12 03:38:20,689 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-12 03:38:20,692 INFO L356 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2022-07-12 03:38:20,692 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 20 treesize of output 14 [2022-07-12 03:38:20,694 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 37 treesize of output 31 [2022-07-12 03:38:20,714 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-07-12 03:38:20,714 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 22 treesize of output 24 [2022-07-12 03:38:20,729 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-12 03:38:20,730 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 79 treesize of output 78 [2022-07-12 03:38:20,734 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-12 03:38:20,735 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 67 treesize of output 54 [2022-07-12 03:38:20,737 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-12 03:38:20,738 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 42 treesize of output 36 [2022-07-12 03:38:20,741 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-12 03:38:20,742 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 88 treesize of output 74 [2022-07-12 03:38:20,745 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 99 treesize of output 83 [2022-07-12 03:38:20,747 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 83 treesize of output 63 [2022-07-12 03:38:20,753 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-07-12 03:38:20,754 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 22 treesize of output 18 [2022-07-12 03:38:20,763 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 12 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 13 not checked. [2022-07-12 03:38:20,763 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [127652547] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 03:38:20,763 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 03:38:20,763 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10, 10] total 21 [2022-07-12 03:38:20,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952377190] [2022-07-12 03:38:20,764 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 03:38:20,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-07-12 03:38:20,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 03:38:20,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-07-12 03:38:20,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=329, Unknown=1, NotChecked=36, Total=420 [2022-07-12 03:38:20,765 INFO L87 Difference]: Start difference. First operand 100 states and 125 transitions. Second operand has 21 states, 21 states have (on average 5.0476190476190474) internal successors, (106), 21 states have internal predecessors, (106), 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) [2022-07-12 03:38:21,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 03:38:21,033 INFO L93 Difference]: Finished difference Result 136 states and 165 transitions. [2022-07-12 03:38:21,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 03:38:21,034 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.0476190476190474) internal successors, (106), 21 states have internal predecessors, (106), 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 51 [2022-07-12 03:38:21,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 03:38:21,034 INFO L225 Difference]: With dead ends: 136 [2022-07-12 03:38:21,034 INFO L226 Difference]: Without dead ends: 104 [2022-07-12 03:38:21,035 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 95 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=79, Invalid=476, Unknown=1, NotChecked=44, Total=600 [2022-07-12 03:38:21,035 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 66 mSDsluCounter, 497 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 544 SdHoareTripleChecker+Invalid, 255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 112 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-12 03:38:21,035 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 544 Invalid, 255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 137 Invalid, 0 Unknown, 112 Unchecked, 0.2s Time] [2022-07-12 03:38:21,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2022-07-12 03:38:21,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 97. [2022-07-12 03:38:21,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 96 states have (on average 1.25) internal successors, (120), 96 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 03:38:21,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 120 transitions. [2022-07-12 03:38:21,049 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 120 transitions. Word has length 51 [2022-07-12 03:38:21,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 03:38:21,049 INFO L495 AbstractCegarLoop]: Abstraction has 97 states and 120 transitions. [2022-07-12 03:38:21,049 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.0476190476190474) internal successors, (106), 21 states have internal predecessors, (106), 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) [2022-07-12 03:38:21,049 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 120 transitions. [2022-07-12 03:38:21,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-07-12 03:38:21,050 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 03:38:21,050 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 03:38:21,067 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-07-12 03:38:21,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 03:38:21,255 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 03:38:21,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 03:38:21,256 INFO L85 PathProgramCache]: Analyzing trace with hash 13616817, now seen corresponding path program 3 times [2022-07-12 03:38:21,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 03:38:21,258 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342334973] [2022-07-12 03:38:21,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 03:38:21,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 03:38:21,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 03:38:21,493 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 12 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 03:38:21,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 03:38:21,493 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342334973] [2022-07-12 03:38:21,493 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1342334973] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 03:38:21,493 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1198871962] [2022-07-12 03:38:21,493 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-12 03:38:21,493 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 03:38:21,493 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 03:38:21,495 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 03:38:21,496 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-07-12 03:38:21,695 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-07-12 03:38:21,695 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-12 03:38:21,698 INFO L263 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 81 conjunts are in the unsatisfiable core [2022-07-12 03:38:21,701 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 03:38:21,714 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 [2022-07-12 03:38:21,718 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 [2022-07-12 03:38:21,721 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 [2022-07-12 03:38:21,789 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 0 case distinctions, treesize of input 9 treesize of output 12 [2022-07-12 03:38:21,792 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 0 case distinctions, treesize of input 9 treesize of output 12 [2022-07-12 03:38:21,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:38:21,795 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 [2022-07-12 03:38:21,824 INFO L356 Elim1Store]: treesize reduction 30, result has 37.5 percent of original size [2022-07-12 03:38:21,824 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 21 treesize of output 29 [2022-07-12 03:38:21,827 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 [2022-07-12 03:38:21,925 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2022-07-12 03:38:21,929 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 0 case distinctions, treesize of input 9 treesize of output 12 [2022-07-12 03:38:21,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:38:21,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:38:21,934 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 29 treesize of output 34 [2022-07-12 03:38:21,938 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:38:21,945 INFO L356 Elim1Store]: treesize reduction 25, result has 16.7 percent of original size [2022-07-12 03:38:21,945 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 56 treesize of output 52 [2022-07-12 03:38:21,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:38:21,953 INFO L356 Elim1Store]: treesize reduction 4, result has 75.0 percent of original size [2022-07-12 03:38:21,953 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 22 [2022-07-12 03:38:22,423 INFO L356 Elim1Store]: treesize reduction 85, result has 11.5 percent of original size [2022-07-12 03:38:22,425 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 132 treesize of output 74 [2022-07-12 03:38:22,437 INFO L356 Elim1Store]: treesize reduction 10, result has 41.2 percent of original size [2022-07-12 03:38:22,437 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 37 treesize of output 25 [2022-07-12 03:38:22,443 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 12 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 03:38:22,443 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 03:38:22,569 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-12 03:38:22,569 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 34 [2022-07-12 03:38:22,572 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-12 03:38:22,573 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 27 treesize of output 31 [2022-07-12 03:38:22,584 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-12 03:38:22,584 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 37 [2022-07-12 03:38:22,587 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-12 03:38:22,588 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 30 treesize of output 31 [2022-07-12 03:38:22,725 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-12 03:38:22,726 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 42 treesize of output 43 [2022-07-12 03:38:22,729 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-12 03:38:22,729 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 36 treesize of output 40 [2022-07-12 03:38:22,741 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-12 03:38:22,741 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 42 treesize of output 43 [2022-07-12 03:38:22,745 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-12 03:38:22,745 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 36 treesize of output 40 [2022-07-12 03:38:22,775 WARN L833 $PredicateComparison]: unable to prove that (and (forall ((v_arrayElimArr_88 (Array Int Int)) (v_arrayElimArr_87 (Array Int Int)) (|v_ULTIMATE.start_main_~l~0#1.base_72| Int) (v_arrayElimArr_91 (Array Int Int)) (v_arrayElimArr_92 (Array Int Int))) (let ((.cse0 (select v_arrayElimArr_87 0))) (or (not (= (select (store |c_#valid| .cse0 1) |v_ULTIMATE.start_main_~l~0#1.base_72|) 0)) (not (= |c_ULTIMATE.start_main_~l~0#1.offset| (select v_arrayElimArr_92 0))) (not (= (select |c_#valid| .cse0) 0)) (= (select (let ((.cse1 (store (store |c_#memory_$Pointer$.base| .cse0 v_arrayElimArr_91) |v_ULTIMATE.start_main_~l~0#1.base_72| v_arrayElimArr_87))) (select .cse1 (select (select .cse1 .cse0) 0))) (select (select (store (store |c_#memory_$Pointer$.offset| .cse0 v_arrayElimArr_92) |v_ULTIMATE.start_main_~l~0#1.base_72| v_arrayElimArr_88) .cse0) 0)) 0) (not (= (select v_arrayElimArr_88 0) 0)) (not (= |c_ULTIMATE.start_main_~l~0#1.base| (select v_arrayElimArr_91 0)))))) (forall ((v_arrayElimArr_89 (Array Int Int)) (|v_ULTIMATE.start_main_~l~0#1.base_72| Int) (v_arrayElimArr_90 (Array Int Int)) (v_arrayElimArr_93 (Array Int Int)) (v_arrayElimArr_94 (Array Int Int))) (let ((.cse3 (select v_arrayElimArr_89 0))) (or (not (= (select v_arrayElimArr_94 0) |c_ULTIMATE.start_main_~l~0#1.base|)) (= (let ((.cse2 (store (store |c_#memory_$Pointer$.offset| .cse3 v_arrayElimArr_93) |v_ULTIMATE.start_main_~l~0#1.base_72| v_arrayElimArr_90))) (select (select .cse2 (select (select (store (store |c_#memory_$Pointer$.base| .cse3 v_arrayElimArr_94) |v_ULTIMATE.start_main_~l~0#1.base_72| v_arrayElimArr_89) .cse3) 0)) (select (select .cse2 .cse3) 0))) 0) (not (= (select (store |c_#valid| .cse3 1) |v_ULTIMATE.start_main_~l~0#1.base_72|) 0)) (not (= (select |c_#valid| .cse3) 0)) (not (= (select v_arrayElimArr_90 0) 0)) (not (= |c_ULTIMATE.start_main_~l~0#1.offset| (select v_arrayElimArr_93 0))))))) is different from false [2022-07-12 03:38:22,902 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-12 03:38:22,903 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 79 treesize of output 78 [2022-07-12 03:38:22,908 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-12 03:38:22,908 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 67 treesize of output 54 [2022-07-12 03:38:22,910 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-12 03:38:22,912 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 42 treesize of output 36 [2022-07-12 03:38:22,915 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-12 03:38:22,917 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 88 treesize of output 74 [2022-07-12 03:38:22,920 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 99 treesize of output 79 [2022-07-12 03:38:22,922 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 79 treesize of output 63 [2022-07-12 03:38:22,929 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-07-12 03:38:22,929 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 22 treesize of output 18 [2022-07-12 03:38:22,935 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-12 03:38:22,936 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 79 treesize of output 66 [2022-07-12 03:38:22,938 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-12 03:38:22,943 INFO L356 Elim1Store]: treesize reduction 32, result has 11.1 percent of original size [2022-07-12 03:38:22,943 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 256 treesize of output 222 [2022-07-12 03:38:22,949 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-12 03:38:22,949 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 214 treesize of output 152 [2022-07-12 03:38:22,952 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-12 03:38:22,953 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 80 treesize of output 74 [2022-07-12 03:38:22,957 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 99 treesize of output 83 [2022-07-12 03:38:22,960 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 64 treesize of output 54 [2022-07-12 03:38:22,963 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 57 treesize of output 49 [2022-07-12 03:38:22,964 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-12 03:38:22,965 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-12 03:38:22,968 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-07-12 03:38:22,969 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 16 treesize of output 12 [2022-07-12 03:38:22,974 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-07-12 03:38:22,974 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 22 treesize of output 24 [2022-07-12 03:38:22,983 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 12 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 13 not checked. [2022-07-12 03:38:22,983 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1198871962] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 03:38:22,984 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 03:38:22,984 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10, 10] total 21 [2022-07-12 03:38:22,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400703643] [2022-07-12 03:38:22,984 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 03:38:22,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-07-12 03:38:22,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 03:38:22,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-07-12 03:38:22,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=329, Unknown=1, NotChecked=36, Total=420 [2022-07-12 03:38:22,985 INFO L87 Difference]: Start difference. First operand 97 states and 120 transitions. Second operand has 21 states, 21 states have (on average 5.0476190476190474) internal successors, (106), 21 states have internal predecessors, (106), 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) [2022-07-12 03:38:23,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 03:38:23,294 INFO L93 Difference]: Finished difference Result 123 states and 150 transitions. [2022-07-12 03:38:23,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-12 03:38:23,295 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.0476190476190474) internal successors, (106), 21 states have internal predecessors, (106), 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 51 [2022-07-12 03:38:23,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 03:38:23,295 INFO L225 Difference]: With dead ends: 123 [2022-07-12 03:38:23,295 INFO L226 Difference]: Without dead ends: 79 [2022-07-12 03:38:23,295 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 95 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=88, Invalid=515, Unknown=1, NotChecked=46, Total=650 [2022-07-12 03:38:23,296 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 46 mSDsluCounter, 535 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 577 SdHoareTripleChecker+Invalid, 296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 146 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-12 03:38:23,296 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 577 Invalid, 296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 146 Invalid, 0 Unknown, 146 Unchecked, 0.2s Time] [2022-07-12 03:38:23,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2022-07-12 03:38:23,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 72. [2022-07-12 03:38:23,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 71 states have (on average 1.295774647887324) internal successors, (92), 71 states have internal predecessors, (92), 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) [2022-07-12 03:38:23,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 92 transitions. [2022-07-12 03:38:23,304 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 92 transitions. Word has length 51 [2022-07-12 03:38:23,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 03:38:23,305 INFO L495 AbstractCegarLoop]: Abstraction has 72 states and 92 transitions. [2022-07-12 03:38:23,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.0476190476190474) internal successors, (106), 21 states have internal predecessors, (106), 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) [2022-07-12 03:38:23,305 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 92 transitions. [2022-07-12 03:38:23,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-07-12 03:38:23,305 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 03:38:23,305 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 03:38:23,326 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2022-07-12 03:38:23,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 03:38:23,523 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 03:38:23,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 03:38:23,523 INFO L85 PathProgramCache]: Analyzing trace with hash -1013477057, now seen corresponding path program 6 times [2022-07-12 03:38:23,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 03:38:23,523 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927873169] [2022-07-12 03:38:23,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 03:38:23,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 03:38:23,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 03:38:23,914 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 19 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 03:38:23,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 03:38:23,915 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927873169] [2022-07-12 03:38:23,915 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [927873169] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 03:38:23,915 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [936690928] [2022-07-12 03:38:23,915 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-07-12 03:38:23,915 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 03:38:23,915 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 03:38:23,932 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 03:38:23,934 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-07-12 03:38:24,478 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-07-12 03:38:24,479 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-12 03:38:24,483 INFO L263 TraceCheckSpWp]: Trace formula consists of 374 conjuncts, 114 conjunts are in the unsatisfiable core [2022-07-12 03:38:24,493 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 03:38:24,497 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 [2022-07-12 03:38:24,500 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:38:24,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:38:24,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:38:24,502 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 26 [2022-07-12 03:38:24,560 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 [2022-07-12 03:38:24,565 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 [2022-07-12 03:38:24,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:38:24,568 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 32 treesize of output 28 [2022-07-12 03:38:24,577 INFO L356 Elim1Store]: treesize reduction 30, result has 37.5 percent of original size [2022-07-12 03:38:24,578 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 21 treesize of output 29 [2022-07-12 03:38:24,647 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 [2022-07-12 03:38:24,650 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 [2022-07-12 03:38:24,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:38:24,654 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 59 treesize of output 49 [2022-07-12 03:38:24,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:38:24,658 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 40 treesize of output 32 [2022-07-12 03:38:24,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:38:24,670 INFO L356 Elim1Store]: treesize reduction 42, result has 38.2 percent of original size [2022-07-12 03:38:24,671 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 34 treesize of output 49 [2022-07-12 03:38:24,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:38:24,674 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 [2022-07-12 03:38:24,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:38:24,779 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:38:24,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:38:24,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:38:24,781 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 7 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 65 [2022-07-12 03:38:24,785 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 [2022-07-12 03:38:24,788 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 [2022-07-12 03:38:24,791 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:38:24,797 INFO L356 Elim1Store]: treesize reduction 25, result has 16.7 percent of original size [2022-07-12 03:38:24,797 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 119 treesize of output 83 [2022-07-12 03:38:24,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:38:24,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:38:24,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:38:24,803 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 33 treesize of output 38 [2022-07-12 03:38:24,807 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:38:24,807 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:38:24,808 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:38:24,811 INFO L356 Elim1Store]: treesize reduction 4, result has 80.0 percent of original size [2022-07-12 03:38:24,812 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 29 [2022-07-12 03:38:38,297 INFO L356 Elim1Store]: treesize reduction 252, result has 41.3 percent of original size [2022-07-12 03:38:38,298 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 13 new quantified variables, introduced 36 case distinctions, treesize of input 313 treesize of output 321 [2022-07-12 03:38:38,475 INFO L356 Elim1Store]: treesize reduction 236, result has 35.3 percent of original size [2022-07-12 03:38:38,475 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 11 new quantified variables, introduced 36 case distinctions, treesize of input 328 treesize of output 402 [2022-07-12 03:38:41,862 INFO L356 Elim1Store]: treesize reduction 110, result has 17.3 percent of original size [2022-07-12 03:38:41,863 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 84 treesize of output 72 [2022-07-12 03:38:41,875 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 21 proven. 52 refuted. 8 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 03:38:41,875 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 03:38:42,267 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-12 03:38:42,268 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 169 treesize of output 157 [2022-07-12 03:38:42,271 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-12 03:38:42,272 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 151 treesize of output 139 [2022-07-12 03:38:42,395 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-12 03:38:42,396 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 265 treesize of output 253 [2022-07-12 03:38:42,411 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-12 03:38:42,411 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 247 treesize of output 235 [2022-07-12 03:38:42,655 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-12 03:38:42,655 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 393 treesize of output 331 [2022-07-12 03:38:42,660 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-12 03:38:42,660 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 321 treesize of output 259 [2022-07-12 03:38:42,676 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-12 03:38:42,677 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-12 03:38:42,677 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-12 03:38:42,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:38:42,679 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 195 treesize of output 149 [2022-07-12 03:38:42,683 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-12 03:38:42,685 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 1023 treesize of output 985 [2022-07-12 03:38:42,690 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 1018 treesize of output 876 [2022-07-12 03:38:42,694 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 870 treesize of output 738 [2022-07-12 03:38:42,919 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1761 (Array Int Int)) (|v_ULTIMATE.start_main_~l~0#1.base_79| Int) (v_ArrVal_1774 Int) (v_ArrVal_1760 (Array Int Int)) (|ULTIMATE.start_main_~ev2~0#1| Int) (v_arrayElimCell_346 Int) (v_arrayElimCell_345 Int) (v_ArrVal_1777 Int)) (let ((.cse0 (store |c_#valid| v_arrayElimCell_345 1)) (.cse1 (select (let ((.cse2 (store (store |c_#memory_int| v_arrayElimCell_345 v_ArrVal_1760) v_arrayElimCell_346 v_ArrVal_1761))) (store .cse2 |v_ULTIMATE.start_main_~l~0#1.base_79| (store (store (store (select .cse2 |v_ULTIMATE.start_main_~l~0#1.base_79|) 4 v_ArrVal_1774) 8 |ULTIMATE.start_main_~ev2~0#1|) 0 v_ArrVal_1777))) |c_ULTIMATE.start_main_~l~0#1.base|))) (or (not (= (select .cse0 v_arrayElimCell_346) 0)) (not (= (select |c_#valid| v_arrayElimCell_345) 0)) (not (= (select (store .cse0 v_arrayElimCell_346 1) |v_ULTIMATE.start_main_~l~0#1.base_79|) 0)) (not (= 3 (select .cse1 (+ |c_ULTIMATE.start_main_~l~0#1.offset| 8)))) (= 3 |ULTIMATE.start_main_~ev2~0#1|) (not (= (select .cse1 (+ |c_ULTIMATE.start_main_~l~0#1.offset| 4)) 1))))) is different from false [2022-07-12 03:38:42,985 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 21 proven. 47 refuted. 0 times theorem prover too weak. 0 trivial. 13 not checked. [2022-07-12 03:38:42,986 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [936690928] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 03:38:42,986 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 03:38:42,986 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 16, 16] total 42 [2022-07-12 03:38:42,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061530307] [2022-07-12 03:38:42,986 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 03:38:42,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-07-12 03:38:42,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 03:38:42,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-07-12 03:38:42,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=1501, Unknown=7, NotChecked=78, Total=1722 [2022-07-12 03:38:42,988 INFO L87 Difference]: Start difference. First operand 72 states and 92 transitions. Second operand has 42 states, 42 states have (on average 3.5476190476190474) internal successors, (149), 42 states have internal predecessors, (149), 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) [2022-07-12 03:40:24,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 03:40:24,721 INFO L93 Difference]: Finished difference Result 1071 states and 1292 transitions. [2022-07-12 03:40:24,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 341 states. [2022-07-12 03:40:24,721 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 3.5476190476190474) internal successors, (149), 42 states have internal predecessors, (149), 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 56 [2022-07-12 03:40:24,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 03:40:24,731 INFO L225 Difference]: With dead ends: 1071 [2022-07-12 03:40:24,731 INFO L226 Difference]: Without dead ends: 1056 [2022-07-12 03:40:24,738 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 484 GetRequests, 106 SyntacticMatches, 9 SemanticMatches, 369 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 58754 ImplicationChecksByTransitivity, 113.5s TimeCoverageRelationStatistics Valid=18232, Invalid=118275, Unknown=27, NotChecked=736, Total=137270 [2022-07-12 03:40:24,748 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 2435 mSDsluCounter, 1386 mSDsCounter, 0 mSdLazyCounter, 1002 mSolverCounterSat, 573 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2435 SdHoareTripleChecker+Valid, 1447 SdHoareTripleChecker+Invalid, 2496 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 573 IncrementalHoareTripleChecker+Valid, 1002 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 921 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-12 03:40:24,748 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2435 Valid, 1447 Invalid, 2496 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [573 Valid, 1002 Invalid, 0 Unknown, 921 Unchecked, 1.2s Time] [2022-07-12 03:40:24,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1056 states. [2022-07-12 03:40:24,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1056 to 176. [2022-07-12 03:40:24,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 175 states have (on average 1.3142857142857143) internal successors, (230), 175 states have internal predecessors, (230), 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) [2022-07-12 03:40:24,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 230 transitions. [2022-07-12 03:40:24,792 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 230 transitions. Word has length 56 [2022-07-12 03:40:24,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 03:40:24,792 INFO L495 AbstractCegarLoop]: Abstraction has 176 states and 230 transitions. [2022-07-12 03:40:24,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 3.5476190476190474) internal successors, (149), 42 states have internal predecessors, (149), 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) [2022-07-12 03:40:24,793 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 230 transitions. [2022-07-12 03:40:24,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-07-12 03:40:24,797 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 03:40:24,797 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 03:40:24,827 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-07-12 03:40:25,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 03:40:25,016 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 03:40:25,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 03:40:25,016 INFO L85 PathProgramCache]: Analyzing trace with hash -1207256061, now seen corresponding path program 4 times [2022-07-12 03:40:25,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 03:40:25,016 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983265192] [2022-07-12 03:40:25,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 03:40:25,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 03:40:25,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 03:40:25,632 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 19 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 03:40:25,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 03:40:25,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983265192] [2022-07-12 03:40:25,633 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [983265192] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 03:40:25,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [664414947] [2022-07-12 03:40:25,633 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-07-12 03:40:25,633 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 03:40:25,633 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 03:40:25,636 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 03:40:25,639 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-07-12 03:40:25,806 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-07-12 03:40:25,806 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-12 03:40:25,808 INFO L263 TraceCheckSpWp]: Trace formula consists of 374 conjuncts, 108 conjunts are in the unsatisfiable core [2022-07-12 03:40:25,811 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 03:40:25,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:40:25,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:40:25,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:40:25,817 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 26 [2022-07-12 03:40:25,822 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 [2022-07-12 03:40:25,871 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 [2022-07-12 03:40:25,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:40:25,875 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 32 treesize of output 28 [2022-07-12 03:40:25,887 INFO L356 Elim1Store]: treesize reduction 30, result has 37.5 percent of original size [2022-07-12 03:40:25,900 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 21 treesize of output 29 [2022-07-12 03:40:25,912 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 [2022-07-12 03:40:25,987 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 [2022-07-12 03:40:25,991 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 [2022-07-12 03:40:25,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:40:25,996 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 59 treesize of output 49 [2022-07-12 03:40:26,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:40:26,000 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 [2022-07-12 03:40:26,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:40:26,015 INFO L356 Elim1Store]: treesize reduction 42, result has 38.2 percent of original size [2022-07-12 03:40:26,016 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 34 treesize of output 49 [2022-07-12 03:40:26,019 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 40 treesize of output 32 [2022-07-12 03:40:26,180 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 [2022-07-12 03:40:26,185 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 [2022-07-12 03:40:26,189 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:40:26,196 INFO L356 Elim1Store]: treesize reduction 25, result has 16.7 percent of original size [2022-07-12 03:40:26,196 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 119 treesize of output 83 [2022-07-12 03:40:26,201 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:40:26,201 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:40:26,202 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:40:26,202 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 33 treesize of output 38 [2022-07-12 03:40:26,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:40:26,207 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 36 [2022-07-12 03:40:26,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:40:26,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:40:26,212 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:40:26,216 INFO L356 Elim1Store]: treesize reduction 4, result has 80.0 percent of original size [2022-07-12 03:40:26,216 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 29 [2022-07-12 03:40:27,026 INFO L356 Elim1Store]: treesize reduction 260, result has 39.4 percent of original size [2022-07-12 03:40:27,026 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 13 new quantified variables, introduced 36 case distinctions, treesize of input 297 treesize of output 297 [2022-07-12 03:40:27,137 INFO L356 Elim1Store]: treesize reduction 224, result has 38.6 percent of original size [2022-07-12 03:40:27,137 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 11 new quantified variables, introduced 36 case distinctions, treesize of input 304 treesize of output 394 [2022-07-12 03:40:31,372 INFO L356 Elim1Store]: treesize reduction 46, result has 13.2 percent of original size [2022-07-12 03:40:31,372 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 4 new quantified variables, introduced 6 case distinctions, treesize of input 60 treesize of output 40 [2022-07-12 03:40:31,376 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 21 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 03:40:31,376 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 03:40:31,656 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-12 03:40:31,656 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 147 treesize of output 135 [2022-07-12 03:40:31,660 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-12 03:40:31,660 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 129 treesize of output 117 [2022-07-12 03:40:31,672 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_arrayElimArr_114 (Array Int Int)) (v_arrayElimArr_113 (Array Int Int)) (|v_ULTIMATE.start_main_~l~0#1.base_86| Int) (v_ArrVal_1949 (Array Int Int))) (let ((.cse2 (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_main_~l~0#1.base_86| v_arrayElimArr_114)) (.cse5 (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_main_~l~0#1.base_86| v_arrayElimArr_113))) (let ((.cse3 (select (select .cse5 |c_ULTIMATE.start_main_~l~0#1.base|) |c_ULTIMATE.start_main_~l~0#1.offset|)) (.cse4 (select (select .cse2 |c_ULTIMATE.start_main_~l~0#1.base|) |c_ULTIMATE.start_main_~l~0#1.offset|))) (let ((.cse0 (select (store |c_#memory_int| |v_ULTIMATE.start_main_~l~0#1.base_86| v_ArrVal_1949) (select (select .cse5 .cse3) .cse4))) (.cse1 (select (select .cse2 .cse3) .cse4))) (or (not (= (select |c_#valid| |v_ULTIMATE.start_main_~l~0#1.base_86|) 0)) (not (= (select .cse0 (+ .cse1 8)) 3)) (not (= |c_ULTIMATE.start_main_~l~0#1.offset| (select v_arrayElimArr_114 0))) (not (= (select v_arrayElimArr_113 0) |c_ULTIMATE.start_main_~l~0#1.base|)) (not (= (select .cse0 (+ .cse1 4)) 1))))))) is different from false [2022-07-12 03:40:31,714 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-12 03:40:31,715 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 273 treesize of output 251 [2022-07-12 03:40:31,718 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-12 03:40:31,718 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 243 treesize of output 221 [2022-07-12 03:40:31,731 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1941 (Array Int Int)) (v_arrayElimArr_114 (Array Int Int)) (v_arrayElimArr_113 (Array Int Int)) (|v_ULTIMATE.start_main_~l~0#1.base_86| Int) (v_ArrVal_1949 (Array Int Int)) (v_arrayElimArr_116 (Array Int Int)) (v_arrayElimArr_115 (Array Int Int))) (let ((.cse3 (select v_arrayElimArr_113 0))) (let ((.cse4 (store (store |c_#memory_$Pointer$.offset| .cse3 v_arrayElimArr_116) |v_ULTIMATE.start_main_~l~0#1.base_86| v_arrayElimArr_114)) (.cse7 (store (store |c_#memory_$Pointer$.base| .cse3 v_arrayElimArr_115) |v_ULTIMATE.start_main_~l~0#1.base_86| v_arrayElimArr_113)) (.cse0 (select v_arrayElimArr_114 0))) (let ((.cse5 (select (select .cse7 .cse3) .cse0)) (.cse6 (select (select .cse4 .cse3) .cse0))) (let ((.cse1 (select (store (store |c_#memory_int| .cse3 v_ArrVal_1941) |v_ULTIMATE.start_main_~l~0#1.base_86| v_ArrVal_1949) (select (select .cse7 .cse5) .cse6))) (.cse2 (select (select .cse4 .cse5) .cse6))) (or (not (= .cse0 0)) (not (= (select .cse1 (+ .cse2 4)) 1)) (not (= (select v_arrayElimArr_115 .cse0) |c_ULTIMATE.start_main_~l~0#1.base|)) (not (= (select v_arrayElimArr_116 .cse0) |c_ULTIMATE.start_main_~l~0#1.offset|)) (not (= (select .cse1 (+ .cse2 8)) 3)) (not (= (select |c_#valid| .cse3) 0)) (not (= (select (store |c_#valid| .cse3 1) |v_ULTIMATE.start_main_~l~0#1.base_86|) 0)))))))) is different from false [2022-07-12 03:40:31,795 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-12 03:40:31,795 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 419 treesize of output 335 [2022-07-12 03:40:31,800 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-12 03:40:31,800 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 323 treesize of output 239 [2022-07-12 03:40:31,802 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-12 03:40:31,802 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-12 03:40:31,803 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-12 03:40:31,804 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:40:31,805 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 175 treesize of output 119 [2022-07-12 03:40:31,807 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 170 treesize of output 138 [2022-07-12 03:40:31,809 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 124 treesize of output 104 [2022-07-12 03:40:31,811 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-12 03:40:31,811 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-12 03:40:31,812 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-12 03:40:31,813 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 63 treesize of output 43 [2022-07-12 03:40:31,930 INFO L356 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2022-07-12 03:40:31,930 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 63 treesize of output 1 [2022-07-12 03:40:31,931 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 21 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 21 not checked. [2022-07-12 03:40:31,931 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [664414947] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 03:40:31,931 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 03:40:31,932 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 13, 13] total 37 [2022-07-12 03:40:31,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702731176] [2022-07-12 03:40:31,932 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 03:40:31,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-07-12 03:40:31,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 03:40:31,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-07-12 03:40:31,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=1097, Unknown=3, NotChecked=134, Total=1332 [2022-07-12 03:40:31,934 INFO L87 Difference]: Start difference. First operand 176 states and 230 transitions. Second operand has 37 states, 37 states have (on average 4.027027027027027) internal successors, (149), 37 states have internal predecessors, (149), 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) [2022-07-12 03:40:36,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 03:40:36,455 INFO L93 Difference]: Finished difference Result 343 states and 433 transitions. [2022-07-12 03:40:36,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-07-12 03:40:36,455 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 4.027027027027027) internal successors, (149), 37 states have internal predecessors, (149), 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 56 [2022-07-12 03:40:36,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 03:40:36,458 INFO L225 Difference]: With dead ends: 343 [2022-07-12 03:40:36,458 INFO L226 Difference]: Without dead ends: 265 [2022-07-12 03:40:36,460 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 101 SyntacticMatches, 6 SemanticMatches, 68 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 775 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=844, Invalid=3717, Unknown=3, NotChecked=266, Total=4830 [2022-07-12 03:40:36,460 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 367 mSDsluCounter, 829 mSDsCounter, 0 mSdLazyCounter, 442 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 367 SdHoareTripleChecker+Valid, 878 SdHoareTripleChecker+Invalid, 712 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 442 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 187 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-12 03:40:36,461 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [367 Valid, 878 Invalid, 712 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 442 Invalid, 0 Unknown, 187 Unchecked, 0.4s Time] [2022-07-12 03:40:36,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2022-07-12 03:40:36,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 168. [2022-07-12 03:40:36,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 167 states have (on average 1.3233532934131738) internal successors, (221), 167 states have internal predecessors, (221), 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) [2022-07-12 03:40:36,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 221 transitions. [2022-07-12 03:40:36,481 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 221 transitions. Word has length 56 [2022-07-12 03:40:36,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 03:40:36,481 INFO L495 AbstractCegarLoop]: Abstraction has 168 states and 221 transitions. [2022-07-12 03:40:36,481 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 4.027027027027027) internal successors, (149), 37 states have internal predecessors, (149), 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) [2022-07-12 03:40:36,481 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 221 transitions. [2022-07-12 03:40:36,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-07-12 03:40:36,482 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 03:40:36,482 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 03:40:36,499 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-07-12 03:40:36,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2022-07-12 03:40:36,694 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 03:40:36,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 03:40:36,694 INFO L85 PathProgramCache]: Analyzing trace with hash 1403369475, now seen corresponding path program 5 times [2022-07-12 03:40:36,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 03:40:36,694 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068580032] [2022-07-12 03:40:36,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 03:40:36,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 03:40:36,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 03:40:37,065 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 19 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 03:40:37,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 03:40:37,066 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068580032] [2022-07-12 03:40:37,066 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068580032] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 03:40:37,066 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [357652950] [2022-07-12 03:40:37,066 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-07-12 03:40:37,066 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 03:40:37,066 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 03:40:37,067 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 03:40:37,068 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-07-12 03:40:38,055 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-07-12 03:40:38,056 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-12 03:40:38,060 INFO L263 TraceCheckSpWp]: Trace formula consists of 374 conjuncts, 118 conjunts are in the unsatisfiable core [2022-07-12 03:40:38,073 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 03:40:38,077 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 [2022-07-12 03:40:38,080 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:40:38,081 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:40:38,081 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:40:38,082 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 26 [2022-07-12 03:40:38,128 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 [2022-07-12 03:40:38,132 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 [2022-07-12 03:40:38,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:40:38,135 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 32 treesize of output 28 [2022-07-12 03:40:38,148 INFO L356 Elim1Store]: treesize reduction 30, result has 37.5 percent of original size [2022-07-12 03:40:38,149 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 21 treesize of output 29 [2022-07-12 03:40:38,227 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 [2022-07-12 03:40:38,231 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 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 [2022-07-12 03:40:38,235 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:40:38,235 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 59 treesize of output 49 [2022-07-12 03:40:38,239 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:40:38,239 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 32 [2022-07-12 03:40:38,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:40:38,243 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 [2022-07-12 03:40:38,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:40:38,256 INFO L356 Elim1Store]: treesize reduction 42, result has 38.2 percent of original size [2022-07-12 03:40:38,256 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 34 treesize of output 49 [2022-07-12 03:40:38,366 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 [2022-07-12 03:40:38,369 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 [2022-07-12 03:40:38,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:40:38,377 INFO L356 Elim1Store]: treesize reduction 25, result has 16.7 percent of original size [2022-07-12 03:40:38,377 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 119 treesize of output 83 [2022-07-12 03:40:38,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:40:38,381 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 48 treesize of output 36 [2022-07-12 03:40:38,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:40:38,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:40:38,386 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:40:38,389 INFO L356 Elim1Store]: treesize reduction 4, result has 80.0 percent of original size [2022-07-12 03:40:38,389 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 29 [2022-07-12 03:40:38,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:40:38,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:40:38,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:40:38,394 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 33 treesize of output 38 [2022-07-12 03:40:44,017 INFO L356 Elim1Store]: treesize reduction 236, result has 45.0 percent of original size [2022-07-12 03:40:44,018 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 13 new quantified variables, introduced 36 case distinctions, treesize of input 329 treesize of output 357 [2022-07-12 03:40:44,259 INFO L356 Elim1Store]: treesize reduction 208, result has 43.0 percent of original size [2022-07-12 03:40:44,260 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 11 new quantified variables, introduced 36 case distinctions, treesize of input 364 treesize of output 454 [2022-07-12 03:40:53,117 INFO L356 Elim1Store]: treesize reduction 234, result has 22.3 percent of original size [2022-07-12 03:40:53,117 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 1 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 104 treesize of output 124 [2022-07-12 03:40:53,137 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 21 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 03:40:53,137 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 03:40:53,722 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-12 03:40:53,723 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 147 treesize of output 135 [2022-07-12 03:40:53,727 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-12 03:40:53,727 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 129 treesize of output 117 [2022-07-12 03:40:53,742 WARN L833 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~l~0#1.base_93| Int) (v_arrayElimArr_125 (Array Int Int)) (v_arrayElimArr_124 (Array Int Int)) (v_ArrVal_2130 (Array Int Int))) (let ((.cse3 (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_main_~l~0#1.base_93| v_arrayElimArr_125)) (.cse6 (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_main_~l~0#1.base_93| v_arrayElimArr_124))) (let ((.cse0 (store |c_#memory_int| |v_ULTIMATE.start_main_~l~0#1.base_93| v_ArrVal_2130)) (.cse4 (select (select .cse6 |c_ULTIMATE.start_main_~l~0#1.base|) |c_ULTIMATE.start_main_~l~0#1.offset|)) (.cse5 (select (select .cse3 |c_ULTIMATE.start_main_~l~0#1.base|) |c_ULTIMATE.start_main_~l~0#1.offset|))) (let ((.cse1 (select .cse0 (select (select .cse6 .cse4) .cse5))) (.cse2 (select (select .cse3 .cse4) .cse5))) (or (not (= |c_ULTIMATE.start_main_~l~0#1.offset| (select v_arrayElimArr_125 0))) (not (= (select (select .cse0 |c_ULTIMATE.start_main_~l~0#1.base|) (+ |c_ULTIMATE.start_main_~l~0#1.offset| 4)) 0)) (not (= 3 (select .cse1 (+ .cse2 8)))) (not (= (select |c_#valid| |v_ULTIMATE.start_main_~l~0#1.base_93|) 0)) (not (= (select v_arrayElimArr_124 0) |c_ULTIMATE.start_main_~l~0#1.base|)) (not (= (select .cse1 (+ .cse2 4)) 1)) (not (= (select v_ArrVal_2130 4) 1))))))) is different from false [2022-07-12 03:40:54,021 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-12 03:40:54,022 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 233 treesize of output 221 [2022-07-12 03:40:54,026 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-12 03:40:54,026 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 215 treesize of output 203 [2022-07-12 03:40:54,433 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-12 03:40:54,434 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 351 treesize of output 289 [2022-07-12 03:40:54,440 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-12 03:40:54,440 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 279 treesize of output 217 [2022-07-12 03:40:54,443 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-12 03:40:54,444 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-12 03:40:54,446 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-12 03:40:54,448 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 03:40:54,449 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 153 treesize of output 107 [2022-07-12 03:40:54,483 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-12 03:40:54,486 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 687 treesize of output 649 [2022-07-12 03:40:54,492 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 705 treesize of output 593 [2022-07-12 03:40:54,496 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 587 treesize of output 483 [2022-07-12 03:40:54,935 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 21 proven. 47 refuted. 0 times theorem prover too weak. 0 trivial. 13 not checked. [2022-07-12 03:40:54,936 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [357652950] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 03:40:54,936 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 03:40:54,936 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17, 17] total 44 [2022-07-12 03:40:54,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622469800] [2022-07-12 03:40:54,936 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 03:40:54,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2022-07-12 03:40:54,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 03:40:54,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2022-07-12 03:40:54,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=1660, Unknown=1, NotChecked=82, Total=1892 [2022-07-12 03:40:54,944 INFO L87 Difference]: Start difference. First operand 168 states and 221 transitions. Second operand has 44 states, 44 states have (on average 3.3863636363636362) internal successors, (149), 44 states have internal predecessors, (149), 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)