./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-tiling/mbpr3.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 35987657 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/array-tiling/mbpr3.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a50e57e46342104030586dde3ea26bc2e3984490f4fdef34fa383d24842d8980 --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-20 21:08:14,178 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-20 21:08:14,179 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-20 21:08:14,202 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-20 21:08:14,203 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-20 21:08:14,204 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-20 21:08:14,205 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-20 21:08:14,206 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-20 21:08:14,207 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-20 21:08:14,208 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-20 21:08:14,209 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-20 21:08:14,210 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-20 21:08:14,210 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-20 21:08:14,211 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-20 21:08:14,212 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-20 21:08:14,213 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-20 21:08:14,214 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-20 21:08:14,215 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-20 21:08:14,216 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-20 21:08:14,218 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-20 21:08:14,219 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-20 21:08:14,226 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-20 21:08:14,227 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-20 21:08:14,228 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-20 21:08:14,229 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-20 21:08:14,233 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-20 21:08:14,236 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-20 21:08:14,236 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-20 21:08:14,237 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-20 21:08:14,237 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-20 21:08:14,239 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-20 21:08:14,239 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-20 21:08:14,240 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-20 21:08:14,241 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-20 21:08:14,242 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-20 21:08:14,243 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-20 21:08:14,243 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-20 21:08:14,244 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-20 21:08:14,244 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-20 21:08:14,245 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-20 21:08:14,246 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-20 21:08:14,246 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-20 21:08:14,248 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-20 21:08:14,278 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-20 21:08:14,279 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-20 21:08:14,279 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-20 21:08:14,279 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-20 21:08:14,280 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-20 21:08:14,280 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-20 21:08:14,281 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-20 21:08:14,281 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-20 21:08:14,281 INFO L138 SettingsManager]: * Use SBE=true [2022-07-20 21:08:14,282 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-20 21:08:14,282 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-20 21:08:14,282 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-20 21:08:14,283 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-20 21:08:14,283 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-20 21:08:14,283 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-20 21:08:14,283 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-20 21:08:14,283 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-20 21:08:14,284 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-20 21:08:14,284 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-20 21:08:14,285 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-20 21:08:14,285 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-20 21:08:14,285 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-20 21:08:14,285 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-20 21:08:14,286 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-20 21:08:14,286 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-20 21:08:14,286 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-20 21:08:14,286 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-20 21:08:14,286 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-20 21:08:14,287 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-20 21:08:14,287 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-20 21:08:14,287 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-20 21:08:14,287 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-20 21:08:14,288 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-20 21:08:14,288 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a50e57e46342104030586dde3ea26bc2e3984490f4fdef34fa383d24842d8980 [2022-07-20 21:08:14,495 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-20 21:08:14,519 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-20 21:08:14,521 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-20 21:08:14,522 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-20 21:08:14,523 INFO L275 PluginConnector]: CDTParser initialized [2022-07-20 21:08:14,524 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-tiling/mbpr3.c [2022-07-20 21:08:14,587 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4029c4db8/9ff308b232474651af30ac2ddfc48808/FLAG792c64aa1 [2022-07-20 21:08:14,890 INFO L306 CDTParser]: Found 1 translation units. [2022-07-20 21:08:14,891 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-tiling/mbpr3.c [2022-07-20 21:08:14,899 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4029c4db8/9ff308b232474651af30ac2ddfc48808/FLAG792c64aa1 [2022-07-20 21:08:15,327 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4029c4db8/9ff308b232474651af30ac2ddfc48808 [2022-07-20 21:08:15,329 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-20 21:08:15,331 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-20 21:08:15,335 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-20 21:08:15,335 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-20 21:08:15,341 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-20 21:08:15,341 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 09:08:15" (1/1) ... [2022-07-20 21:08:15,342 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e0a3976 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:08:15, skipping insertion in model container [2022-07-20 21:08:15,342 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 09:08:15" (1/1) ... [2022-07-20 21:08:15,348 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-20 21:08:15,365 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-20 21:08:15,485 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-tiling/mbpr3.c[396,409] [2022-07-20 21:08:15,510 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-20 21:08:15,515 INFO L203 MainTranslator]: Completed pre-run [2022-07-20 21:08:15,532 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-tiling/mbpr3.c[396,409] [2022-07-20 21:08:15,551 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-20 21:08:15,564 INFO L208 MainTranslator]: Completed translation [2022-07-20 21:08:15,565 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:08:15 WrapperNode [2022-07-20 21:08:15,565 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-20 21:08:15,566 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-20 21:08:15,566 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-20 21:08:15,566 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-20 21:08:15,572 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:08:15" (1/1) ... [2022-07-20 21:08:15,585 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:08:15" (1/1) ... [2022-07-20 21:08:15,609 INFO L137 Inliner]: procedures = 15, calls = 32, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 107 [2022-07-20 21:08:15,609 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-20 21:08:15,610 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-20 21:08:15,610 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-20 21:08:15,610 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-20 21:08:15,616 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:08:15" (1/1) ... [2022-07-20 21:08:15,617 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:08:15" (1/1) ... [2022-07-20 21:08:15,619 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:08:15" (1/1) ... [2022-07-20 21:08:15,619 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:08:15" (1/1) ... [2022-07-20 21:08:15,624 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:08:15" (1/1) ... [2022-07-20 21:08:15,635 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:08:15" (1/1) ... [2022-07-20 21:08:15,636 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:08:15" (1/1) ... [2022-07-20 21:08:15,638 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-20 21:08:15,644 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-20 21:08:15,644 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-20 21:08:15,644 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-20 21:08:15,645 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:08:15" (1/1) ... [2022-07-20 21:08:15,652 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-20 21:08:15,661 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-20 21:08:15,671 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) [2022-07-20 21:08:15,676 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 [2022-07-20 21:08:15,707 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-20 21:08:15,707 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-20 21:08:15,707 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-20 21:08:15,708 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-20 21:08:15,708 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-20 21:08:15,708 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-20 21:08:15,708 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-20 21:08:15,708 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-20 21:08:15,765 INFO L234 CfgBuilder]: Building ICFG [2022-07-20 21:08:15,766 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-20 21:08:15,918 INFO L275 CfgBuilder]: Performing block encoding [2022-07-20 21:08:15,924 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-20 21:08:15,924 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2022-07-20 21:08:15,925 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 09:08:15 BoogieIcfgContainer [2022-07-20 21:08:15,926 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-20 21:08:15,927 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-20 21:08:15,927 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-20 21:08:15,949 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-20 21:08:15,949 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 09:08:15" (1/3) ... [2022-07-20 21:08:15,950 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7da51992 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 09:08:15, skipping insertion in model container [2022-07-20 21:08:15,956 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 09:08:15" (2/3) ... [2022-07-20 21:08:15,957 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7da51992 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 09:08:15, skipping insertion in model container [2022-07-20 21:08:15,957 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 09:08:15" (3/3) ... [2022-07-20 21:08:15,958 INFO L111 eAbstractionObserver]: Analyzing ICFG mbpr3.c [2022-07-20 21:08:15,969 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-20 21:08:15,974 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-20 21:08:16,034 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-20 21:08:16,041 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@5f73bb57, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@1ed4be1c [2022-07-20 21:08:16,041 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-20 21:08:16,044 INFO L276 IsEmpty]: Start isEmpty. Operand has 34 states, 32 states have (on average 1.53125) internal successors, (49), 33 states have internal predecessors, (49), 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) [2022-07-20 21:08:16,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-07-20 21:08:16,052 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 21:08:16,053 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 21:08:16,054 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 21:08:16,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 21:08:16,064 INFO L85 PathProgramCache]: Analyzing trace with hash -565609025, now seen corresponding path program 1 times [2022-07-20 21:08:16,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 21:08:16,072 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535246298] [2022-07-20 21:08:16,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 21:08:16,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 21:08:16,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 21:08:16,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 21:08:16,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 21:08:16,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535246298] [2022-07-20 21:08:16,191 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [535246298] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 21:08:16,192 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 21:08:16,192 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-20 21:08:16,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816743773] [2022-07-20 21:08:16,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 21:08:16,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-20 21:08:16,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 21:08:16,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-20 21:08:16,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-20 21:08:16,231 INFO L87 Difference]: Start difference. First operand has 34 states, 32 states have (on average 1.53125) internal successors, (49), 33 states have internal predecessors, (49), 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 8.5) internal successors, (17), 2 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) [2022-07-20 21:08:16,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 21:08:16,252 INFO L93 Difference]: Finished difference Result 63 states and 90 transitions. [2022-07-20 21:08:16,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-20 21:08:16,254 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 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 [2022-07-20 21:08:16,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 21:08:16,260 INFO L225 Difference]: With dead ends: 63 [2022-07-20 21:08:16,261 INFO L226 Difference]: Without dead ends: 29 [2022-07-20 21:08:16,266 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 [2022-07-20 21:08:16,273 INFO L413 NwaCegarLoop]: 43 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, 43 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 [2022-07-20 21:08:16,274 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-20 21:08:16,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-07-20 21:08:16,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2022-07-20 21:08:16,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 28 states have (on average 1.2857142857142858) internal successors, (36), 28 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) [2022-07-20 21:08:16,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 36 transitions. [2022-07-20 21:08:16,296 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 36 transitions. Word has length 17 [2022-07-20 21:08:16,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 21:08:16,297 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 36 transitions. [2022-07-20 21:08:16,297 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 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) [2022-07-20 21:08:16,297 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 36 transitions. [2022-07-20 21:08:16,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-07-20 21:08:16,298 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 21:08:16,298 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 21:08:16,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-20 21:08:16,299 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 21:08:16,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 21:08:16,300 INFO L85 PathProgramCache]: Analyzing trace with hash -1539779609, now seen corresponding path program 1 times [2022-07-20 21:08:16,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 21:08:16,300 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294149262] [2022-07-20 21:08:16,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 21:08:16,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 21:08:16,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 21:08:16,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 21:08:16,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 21:08:16,374 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294149262] [2022-07-20 21:08:16,374 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1294149262] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 21:08:16,374 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 21:08:16,374 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-20 21:08:16,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346647912] [2022-07-20 21:08:16,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 21:08:16,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-20 21:08:16,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 21:08:16,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-20 21:08:16,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-20 21:08:16,377 INFO L87 Difference]: Start difference. First operand 29 states and 36 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) [2022-07-20 21:08:16,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 21:08:16,409 INFO L93 Difference]: Finished difference Result 38 states and 46 transitions. [2022-07-20 21:08:16,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-20 21:08:16,409 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 17 [2022-07-20 21:08:16,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 21:08:16,410 INFO L225 Difference]: With dead ends: 38 [2022-07-20 21:08:16,410 INFO L226 Difference]: Without dead ends: 36 [2022-07-20 21:08:16,411 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-20 21:08:16,412 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 9 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-20 21:08:16,413 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 98 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-20 21:08:16,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2022-07-20 21:08:16,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 31. [2022-07-20 21:08:16,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.2666666666666666) internal successors, (38), 30 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) [2022-07-20 21:08:16,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 38 transitions. [2022-07-20 21:08:16,418 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 38 transitions. Word has length 17 [2022-07-20 21:08:16,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 21:08:16,418 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 38 transitions. [2022-07-20 21:08:16,419 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) [2022-07-20 21:08:16,419 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 38 transitions. [2022-07-20 21:08:16,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-07-20 21:08:16,420 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 21:08:16,420 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 21:08:16,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-20 21:08:16,420 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 21:08:16,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 21:08:16,421 INFO L85 PathProgramCache]: Analyzing trace with hash -1539720027, now seen corresponding path program 1 times [2022-07-20 21:08:16,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 21:08:16,422 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094417056] [2022-07-20 21:08:16,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 21:08:16,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 21:08:16,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 21:08:16,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 21:08:16,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 21:08:16,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094417056] [2022-07-20 21:08:16,561 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1094417056] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 21:08:16,561 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 21:08:16,561 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-20 21:08:16,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180901635] [2022-07-20 21:08:16,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 21:08:16,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-20 21:08:16,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 21:08:16,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-20 21:08:16,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-07-20 21:08:16,563 INFO L87 Difference]: Start difference. First operand 31 states and 38 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) [2022-07-20 21:08:16,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 21:08:16,636 INFO L93 Difference]: Finished difference Result 64 states and 82 transitions. [2022-07-20 21:08:16,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-20 21:08:16,636 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 17 [2022-07-20 21:08:16,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 21:08:16,637 INFO L225 Difference]: With dead ends: 64 [2022-07-20 21:08:16,637 INFO L226 Difference]: Without dead ends: 43 [2022-07-20 21:08:16,638 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-07-20 21:08:16,639 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 86 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-20 21:08:16,640 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 23 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-20 21:08:16,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2022-07-20 21:08:16,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 34. [2022-07-20 21:08:16,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 33 states have (on average 1.2424242424242424) internal successors, (41), 33 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) [2022-07-20 21:08:16,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 41 transitions. [2022-07-20 21:08:16,652 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 41 transitions. Word has length 17 [2022-07-20 21:08:16,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 21:08:16,652 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 41 transitions. [2022-07-20 21:08:16,653 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) [2022-07-20 21:08:16,653 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 41 transitions. [2022-07-20 21:08:16,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-07-20 21:08:16,655 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 21:08:16,655 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 21:08:16,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-20 21:08:16,655 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 21:08:16,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 21:08:16,660 INFO L85 PathProgramCache]: Analyzing trace with hash -2048606314, now seen corresponding path program 1 times [2022-07-20 21:08:16,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 21:08:16,661 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933629301] [2022-07-20 21:08:16,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 21:08:16,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 21:08:16,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 21:08:16,785 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-20 21:08:16,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 21:08:16,785 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933629301] [2022-07-20 21:08:16,786 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [933629301] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 21:08:16,786 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 21:08:16,786 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-20 21:08:16,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501219766] [2022-07-20 21:08:16,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 21:08:16,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 21:08:16,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 21:08:16,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 21:08:16,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 21:08:16,788 INFO L87 Difference]: Start difference. First operand 34 states and 41 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 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) [2022-07-20 21:08:16,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 21:08:16,806 INFO L93 Difference]: Finished difference Result 49 states and 59 transitions. [2022-07-20 21:08:16,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 21:08:16,807 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 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 29 [2022-07-20 21:08:16,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 21:08:16,807 INFO L225 Difference]: With dead ends: 49 [2022-07-20 21:08:16,807 INFO L226 Difference]: Without dead ends: 34 [2022-07-20 21:08:16,808 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 21:08:16,809 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 16 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-20 21:08:16,810 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 30 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-20 21:08:16,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2022-07-20 21:08:16,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2022-07-20 21:08:16,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 33 states have (on average 1.2121212121212122) internal successors, (40), 33 states have internal predecessors, (40), 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) [2022-07-20 21:08:16,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 40 transitions. [2022-07-20 21:08:16,815 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 40 transitions. Word has length 29 [2022-07-20 21:08:16,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 21:08:16,816 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 40 transitions. [2022-07-20 21:08:16,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 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) [2022-07-20 21:08:16,816 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 40 transitions. [2022-07-20 21:08:16,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-07-20 21:08:16,817 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 21:08:16,817 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 21:08:16,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-20 21:08:16,817 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 21:08:16,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 21:08:16,818 INFO L85 PathProgramCache]: Analyzing trace with hash 1853333972, now seen corresponding path program 1 times [2022-07-20 21:08:16,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 21:08:16,818 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442727652] [2022-07-20 21:08:16,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 21:08:16,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 21:08:16,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 21:08:17,156 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 21:08:17,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 21:08:17,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442727652] [2022-07-20 21:08:17,157 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [442727652] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-20 21:08:17,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1547443289] [2022-07-20 21:08:17,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 21:08:17,157 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-20 21:08:17,158 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-20 21:08:17,163 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) [2022-07-20 21:08:17,198 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-20 21:08:17,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 21:08:17,267 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 40 conjunts are in the unsatisfiable core [2022-07-20 21:08:17,282 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 21:08:17,419 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 16 treesize of output 12 [2022-07-20 21:08:17,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:08:17,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:08:17,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:08:17,460 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 26 treesize of output 29 [2022-07-20 21:08:17,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:08:17,529 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 29 treesize of output 28 [2022-07-20 21:08:17,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:08:17,551 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 31 treesize of output 23 [2022-07-20 21:08:17,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:08:17,595 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 29 treesize of output 28 [2022-07-20 21:08:17,624 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:08:17,625 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:08:17,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:08:17,628 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-20 21:08:17,628 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 1 case distinctions, treesize of input 37 treesize of output 32 [2022-07-20 21:08:17,727 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 21:08:17,728 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-20 21:08:18,127 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 13 [2022-07-20 21:08:18,133 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 28 treesize of output 26 [2022-07-20 21:08:18,144 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 31 treesize of output 27 [2022-07-20 21:08:18,154 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 55 treesize of output 51 [2022-07-20 21:08:18,286 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-20 21:08:18,287 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1547443289] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-20 21:08:18,287 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-20 21:08:18,287 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10, 11] total 25 [2022-07-20 21:08:18,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132247467] [2022-07-20 21:08:18,288 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-20 21:08:18,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-07-20 21:08:18,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 21:08:18,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-07-20 21:08:18,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=493, Unknown=0, NotChecked=0, Total=600 [2022-07-20 21:08:18,290 INFO L87 Difference]: Start difference. First operand 34 states and 40 transitions. Second operand has 25 states, 25 states have (on average 3.16) internal successors, (79), 25 states have internal predecessors, (79), 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) [2022-07-20 21:08:19,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 21:08:19,232 INFO L93 Difference]: Finished difference Result 113 states and 134 transitions. [2022-07-20 21:08:19,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-07-20 21:08:19,233 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.16) internal successors, (79), 25 states have internal predecessors, (79), 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 29 [2022-07-20 21:08:19,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 21:08:19,234 INFO L225 Difference]: With dead ends: 113 [2022-07-20 21:08:19,234 INFO L226 Difference]: Without dead ends: 86 [2022-07-20 21:08:19,235 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 45 SyntacticMatches, 6 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 472 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=490, Invalid=1490, Unknown=0, NotChecked=0, Total=1980 [2022-07-20 21:08:19,236 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 322 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 330 mSolverCounterSat, 195 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 322 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 526 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 195 IncrementalHoareTripleChecker+Valid, 330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-20 21:08:19,236 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [322 Valid, 78 Invalid, 526 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [195 Valid, 330 Invalid, 0 Unknown, 1 Unchecked, 0.3s Time] [2022-07-20 21:08:19,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2022-07-20 21:08:19,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 50. [2022-07-20 21:08:19,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 49 states have (on average 1.183673469387755) internal successors, (58), 49 states have internal predecessors, (58), 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) [2022-07-20 21:08:19,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 58 transitions. [2022-07-20 21:08:19,244 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 58 transitions. Word has length 29 [2022-07-20 21:08:19,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 21:08:19,244 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 58 transitions. [2022-07-20 21:08:19,245 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.16) internal successors, (79), 25 states have internal predecessors, (79), 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) [2022-07-20 21:08:19,245 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 58 transitions. [2022-07-20 21:08:19,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-07-20 21:08:19,246 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 21:08:19,246 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 21:08:19,272 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-20 21:08:19,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-20 21:08:19,468 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 21:08:19,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 21:08:19,468 INFO L85 PathProgramCache]: Analyzing trace with hash -166695065, now seen corresponding path program 1 times [2022-07-20 21:08:19,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 21:08:19,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58532427] [2022-07-20 21:08:19,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 21:08:19,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 21:08:19,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 21:08:19,687 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 21:08:19,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 21:08:19,687 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58532427] [2022-07-20 21:08:19,688 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [58532427] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-20 21:08:19,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1178772444] [2022-07-20 21:08:19,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 21:08:19,688 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-20 21:08:19,688 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-20 21:08:19,690 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) [2022-07-20 21:08:19,691 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-20 21:08:19,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 21:08:19,749 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 25 conjunts are in the unsatisfiable core [2022-07-20 21:08:19,755 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 21:08:19,834 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 16 treesize of output 12 [2022-07-20 21:08:19,855 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:08:19,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:08:19,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:08:19,858 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 26 treesize of output 29 [2022-07-20 21:08:19,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:08:19,909 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 29 treesize of output 28 [2022-07-20 21:08:19,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:08:19,922 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 35 treesize of output 23 [2022-07-20 21:08:20,001 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 [2022-07-20 21:08:20,013 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-20 21:08:20,013 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-20 21:08:20,150 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 17 treesize of output 15 [2022-07-20 21:08:20,155 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 34 treesize of output 30 [2022-07-20 21:08:20,211 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-20 21:08:20,212 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1178772444] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-20 21:08:20,212 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-20 21:08:20,212 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 19 [2022-07-20 21:08:20,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092237008] [2022-07-20 21:08:20,212 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-20 21:08:20,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-07-20 21:08:20,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 21:08:20,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-07-20 21:08:20,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=282, Unknown=0, NotChecked=0, Total=342 [2022-07-20 21:08:20,213 INFO L87 Difference]: Start difference. First operand 50 states and 58 transitions. Second operand has 19 states, 19 states have (on average 4.894736842105263) internal successors, (93), 19 states have internal predecessors, (93), 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) [2022-07-20 21:08:20,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 21:08:20,514 INFO L93 Difference]: Finished difference Result 97 states and 112 transitions. [2022-07-20 21:08:20,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-20 21:08:20,514 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.894736842105263) internal successors, (93), 19 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2022-07-20 21:08:20,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 21:08:20,515 INFO L225 Difference]: With dead ends: 97 [2022-07-20 21:08:20,515 INFO L226 Difference]: Without dead ends: 60 [2022-07-20 21:08:20,515 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 61 SyntacticMatches, 6 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=162, Invalid=540, Unknown=0, NotChecked=0, Total=702 [2022-07-20 21:08:20,516 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 169 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 200 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-20 21:08:20,516 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [169 Valid, 86 Invalid, 265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 200 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-20 21:08:20,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2022-07-20 21:08:20,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 48. [2022-07-20 21:08:20,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 47 states have (on average 1.127659574468085) internal successors, (53), 47 states have internal predecessors, (53), 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) [2022-07-20 21:08:20,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 53 transitions. [2022-07-20 21:08:20,528 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 53 transitions. Word has length 35 [2022-07-20 21:08:20,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 21:08:20,528 INFO L495 AbstractCegarLoop]: Abstraction has 48 states and 53 transitions. [2022-07-20 21:08:20,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.894736842105263) internal successors, (93), 19 states have internal predecessors, (93), 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) [2022-07-20 21:08:20,529 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 53 transitions. [2022-07-20 21:08:20,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-07-20 21:08:20,531 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 21:08:20,531 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 21:08:20,561 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-20 21:08:20,732 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,SelfDestructingSolverStorable5 [2022-07-20 21:08:20,732 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 21:08:20,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 21:08:20,733 INFO L85 PathProgramCache]: Analyzing trace with hash -296121395, now seen corresponding path program 2 times [2022-07-20 21:08:20,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 21:08:20,733 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734080319] [2022-07-20 21:08:20,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 21:08:20,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 21:08:20,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 21:08:21,015 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 17 proven. 14 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-20 21:08:21,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 21:08:21,015 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734080319] [2022-07-20 21:08:21,015 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [734080319] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-20 21:08:21,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1185701526] [2022-07-20 21:08:21,016 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-20 21:08:21,016 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-20 21:08:21,016 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-20 21:08:21,018 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) [2022-07-20 21:08:21,019 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-20 21:08:21,086 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-20 21:08:21,086 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-20 21:08:21,088 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-20 21:08:21,090 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 21:08:21,408 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 30 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-20 21:08:21,409 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-20 21:08:21,594 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 30 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-20 21:08:21,594 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1185701526] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-20 21:08:21,594 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-20 21:08:21,594 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 10] total 27 [2022-07-20 21:08:21,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783432412] [2022-07-20 21:08:21,595 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-20 21:08:21,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-07-20 21:08:21,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 21:08:21,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-07-20 21:08:21,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=184, Invalid=518, Unknown=0, NotChecked=0, Total=702 [2022-07-20 21:08:21,596 INFO L87 Difference]: Start difference. First operand 48 states and 53 transitions. Second operand has 27 states, 27 states have (on average 4.7407407407407405) internal successors, (128), 27 states have internal predecessors, (128), 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) [2022-07-20 21:08:21,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 21:08:21,905 INFO L93 Difference]: Finished difference Result 136 states and 151 transitions. [2022-07-20 21:08:21,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-20 21:08:21,906 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 4.7407407407407405) internal successors, (128), 27 states have internal predecessors, (128), 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 [2022-07-20 21:08:21,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 21:08:21,906 INFO L225 Difference]: With dead ends: 136 [2022-07-20 21:08:21,906 INFO L226 Difference]: Without dead ends: 69 [2022-07-20 21:08:21,907 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 77 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 288 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=273, Invalid=719, Unknown=0, NotChecked=0, Total=992 [2022-07-20 21:08:21,908 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 300 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 304 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 300 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 394 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 304 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-20 21:08:21,908 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [300 Valid, 132 Invalid, 394 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 304 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-20 21:08:21,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2022-07-20 21:08:21,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 60. [2022-07-20 21:08:21,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 59 states have (on average 1.1016949152542372) internal successors, (65), 59 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) [2022-07-20 21:08:21,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 65 transitions. [2022-07-20 21:08:21,919 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 65 transitions. Word has length 47 [2022-07-20 21:08:21,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 21:08:21,919 INFO L495 AbstractCegarLoop]: Abstraction has 60 states and 65 transitions. [2022-07-20 21:08:21,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 4.7407407407407405) internal successors, (128), 27 states have internal predecessors, (128), 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) [2022-07-20 21:08:21,920 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 65 transitions. [2022-07-20 21:08:21,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-07-20 21:08:21,924 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 21:08:21,925 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 21:08:21,954 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-20 21:08:22,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-20 21:08:22,140 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 21:08:22,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 21:08:22,140 INFO L85 PathProgramCache]: Analyzing trace with hash 1825837756, now seen corresponding path program 3 times [2022-07-20 21:08:22,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 21:08:22,140 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404128680] [2022-07-20 21:08:22,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 21:08:22,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 21:08:22,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 21:08:22,467 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 18 proven. 27 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-20 21:08:22,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 21:08:22,468 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404128680] [2022-07-20 21:08:22,468 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1404128680] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-20 21:08:22,468 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1378046872] [2022-07-20 21:08:22,468 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-20 21:08:22,468 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-20 21:08:22,468 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-20 21:08:22,472 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) [2022-07-20 21:08:22,473 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-20 21:08:22,639 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-07-20 21:08:22,639 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-20 21:08:22,642 INFO L263 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 26 conjunts are in the unsatisfiable core [2022-07-20 21:08:22,645 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 21:08:22,695 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 16 treesize of output 12 [2022-07-20 21:08:22,733 INFO L356 Elim1Store]: treesize reduction 135, result has 15.6 percent of original size [2022-07-20 21:08:22,733 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 2 case distinctions, treesize of input 37 treesize of output 40 [2022-07-20 21:08:22,778 INFO L356 Elim1Store]: treesize reduction 33, result has 21.4 percent of original size [2022-07-20 21:08:22,779 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 26 treesize of output 25 [2022-07-20 21:08:22,809 INFO L356 Elim1Store]: treesize reduction 162, result has 12.0 percent of original size [2022-07-20 21:08:22,810 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 52 treesize of output 37 [2022-07-20 21:08:22,915 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 19 treesize of output 7 [2022-07-20 21:08:22,930 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 18 proven. 16 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-07-20 21:08:22,930 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-20 21:08:25,049 WARN L833 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~i~0#1_73| Int)) (or (not (<= (+ |c_ULTIMATE.start_main_~i~0#1| 1) |v_ULTIMATE.start_main_~i~0#1_73|)) (forall ((v_ArrVal_220 Int)) (< (select (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#volArray~0#1.base|) (+ (* |v_ULTIMATE.start_main_~i~0#1_73| 12) (- 4) |c_ULTIMATE.start_main_~#volArray~0#1.offset|) v_ArrVal_220) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| 8)) |c_ULTIMATE.start_main_~MINVAL~0#1|)))) is different from false [2022-07-20 21:08:25,136 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 39 [2022-07-20 21:08:25,139 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 1720 treesize of output 1704 [2022-07-20 21:08:25,550 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 18 proven. 15 refuted. 0 times theorem prover too weak. 14 trivial. 1 not checked. [2022-07-20 21:08:25,550 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1378046872] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-20 21:08:25,550 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-20 21:08:25,550 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 12] total 28 [2022-07-20 21:08:25,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738916024] [2022-07-20 21:08:25,551 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-20 21:08:25,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-07-20 21:08:25,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 21:08:25,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-07-20 21:08:25,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=565, Unknown=1, NotChecked=50, Total=756 [2022-07-20 21:08:25,553 INFO L87 Difference]: Start difference. First operand 60 states and 65 transitions. Second operand has 28 states, 28 states have (on average 4.892857142857143) internal successors, (137), 28 states have internal predecessors, (137), 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) [2022-07-20 21:08:27,674 WARN L833 $PredicateComparison]: unable to prove that (and (forall ((|v_ULTIMATE.start_main_~i~0#1_73| Int)) (or (not (<= (+ |c_ULTIMATE.start_main_~i~0#1| 1) |v_ULTIMATE.start_main_~i~0#1_73|)) (forall ((v_ArrVal_220 Int)) (< (select (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#volArray~0#1.base|) (+ (* |v_ULTIMATE.start_main_~i~0#1_73| 12) (- 4) |c_ULTIMATE.start_main_~#volArray~0#1.offset|) v_ArrVal_220) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| 8)) |c_ULTIMATE.start_main_~MINVAL~0#1|)))) (= |c_ULTIMATE.start_main_~#volArray~0#1.offset| 0) (= 2 |c_ULTIMATE.start_main_~MINVAL~0#1|) (= (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#volArray~0#1.base|) (+ (- 4) |c_ULTIMATE.start_main_~#volArray~0#1.offset| (* 12 |c_ULTIMATE.start_main_~i~0#1|))) 0) (= (+ (- 1) |c_ULTIMATE.start_main_~i~0#1|) 0)) is different from false [2022-07-20 21:08:29,714 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse0 (select |c_#memory_int| |c_ULTIMATE.start_main_~#volArray~0#1.base|))) (and (forall ((|v_ULTIMATE.start_main_~i~0#1_73| Int)) (or (not (<= (+ |c_ULTIMATE.start_main_~i~0#1| 1) |v_ULTIMATE.start_main_~i~0#1_73|)) (forall ((v_ArrVal_220 Int)) (< (select (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#volArray~0#1.base|) (+ (* |v_ULTIMATE.start_main_~i~0#1_73| 12) (- 4) |c_ULTIMATE.start_main_~#volArray~0#1.offset|) v_ArrVal_220) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| 8)) |c_ULTIMATE.start_main_~MINVAL~0#1|)))) (= |c_ULTIMATE.start_main_~#volArray~0#1.offset| 0) (= (+ (- 2) |c_ULTIMATE.start_main_~MINVAL~0#1|) 0) (<= 2 |c_ULTIMATE.start_main_~i~0#1|) (<= (select .cse0 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| 8)) 0) (<= 2 |c_ULTIMATE.start_main_~MINVAL~0#1|) (= (select .cse0 8) 0) (not (= 8 (+ (- 4) |c_ULTIMATE.start_main_~#volArray~0#1.offset| (* 12 |c_ULTIMATE.start_main_~i~0#1|)))))) is different from false [2022-07-20 21:08:29,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 21:08:29,831 INFO L93 Difference]: Finished difference Result 88 states and 95 transitions. [2022-07-20 21:08:29,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-20 21:08:29,831 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 4.892857142857143) internal successors, (137), 28 states have internal predecessors, (137), 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 59 [2022-07-20 21:08:29,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 21:08:29,832 INFO L225 Difference]: With dead ends: 88 [2022-07-20 21:08:29,832 INFO L226 Difference]: Without dead ends: 78 [2022-07-20 21:08:29,833 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 109 SyntacticMatches, 7 SemanticMatches, 31 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 350 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=193, Invalid=686, Unknown=3, NotChecked=174, Total=1056 [2022-07-20 21:08:29,833 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 166 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 388 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 174 SdHoareTripleChecker+Invalid, 570 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 388 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 119 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-20 21:08:29,834 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [166 Valid, 174 Invalid, 570 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 388 Invalid, 0 Unknown, 119 Unchecked, 0.2s Time] [2022-07-20 21:08:29,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2022-07-20 21:08:29,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 60. [2022-07-20 21:08:29,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 59 states have (on average 1.0847457627118644) internal successors, (64), 59 states have internal predecessors, (64), 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) [2022-07-20 21:08:29,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 64 transitions. [2022-07-20 21:08:29,841 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 64 transitions. Word has length 59 [2022-07-20 21:08:29,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 21:08:29,841 INFO L495 AbstractCegarLoop]: Abstraction has 60 states and 64 transitions. [2022-07-20 21:08:29,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 4.892857142857143) internal successors, (137), 28 states have internal predecessors, (137), 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) [2022-07-20 21:08:29,841 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 64 transitions. [2022-07-20 21:08:29,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-07-20 21:08:29,842 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 21:08:29,842 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 21:08:29,869 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-20 21:08:30,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-20 21:08:30,067 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 21:08:30,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 21:08:30,068 INFO L85 PathProgramCache]: Analyzing trace with hash 1432810746, now seen corresponding path program 4 times [2022-07-20 21:08:30,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 21:08:30,069 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543188681] [2022-07-20 21:08:30,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 21:08:30,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 21:08:30,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 21:08:30,589 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 6 proven. 41 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-20 21:08:30,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 21:08:30,590 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543188681] [2022-07-20 21:08:30,590 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [543188681] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-20 21:08:30,590 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1458839212] [2022-07-20 21:08:30,590 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-07-20 21:08:30,590 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-20 21:08:30,590 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-20 21:08:30,591 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) [2022-07-20 21:08:30,592 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-20 21:08:30,667 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-07-20 21:08:30,668 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-20 21:08:30,670 INFO L263 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 57 conjunts are in the unsatisfiable core [2022-07-20 21:08:30,682 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 21:08:30,748 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 16 treesize of output 12 [2022-07-20 21:08:30,788 INFO L356 Elim1Store]: treesize reduction 84, result has 18.4 percent of original size [2022-07-20 21:08:30,789 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 2 case distinctions, treesize of input 28 treesize of output 31 [2022-07-20 21:08:30,843 INFO L356 Elim1Store]: treesize reduction 33, result has 21.4 percent of original size [2022-07-20 21:08:30,843 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 26 treesize of output 25 [2022-07-20 21:08:30,865 INFO L356 Elim1Store]: treesize reduction 114, result has 16.2 percent of original size [2022-07-20 21:08:30,865 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 2 case distinctions, treesize of input 34 treesize of output 37 [2022-07-20 21:08:30,901 INFO L356 Elim1Store]: treesize reduction 42, result has 22.2 percent of original size [2022-07-20 21:08:30,902 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 29 treesize of output 28 [2022-07-20 21:08:30,915 INFO L356 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2022-07-20 21:08:30,916 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 2 case distinctions, treesize of input 37 treesize of output 25 [2022-07-20 21:08:30,945 INFO L356 Elim1Store]: treesize reduction 33, result has 21.4 percent of original size [2022-07-20 21:08:30,945 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 26 treesize of output 25 [2022-07-20 21:08:30,967 INFO L356 Elim1Store]: treesize reduction 114, result has 16.2 percent of original size [2022-07-20 21:08:30,967 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 2 case distinctions, treesize of input 34 treesize of output 37 [2022-07-20 21:08:30,996 INFO L356 Elim1Store]: treesize reduction 42, result has 22.2 percent of original size [2022-07-20 21:08:30,997 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 29 treesize of output 28 [2022-07-20 21:08:31,037 INFO L356 Elim1Store]: treesize reduction 96, result has 16.5 percent of original size [2022-07-20 21:08:31,038 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 3 case distinctions, treesize of input 43 treesize of output 34 [2022-07-20 21:08:31,277 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 6 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 21:08:31,277 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-20 21:08:32,037 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 35 treesize of output 31 [2022-07-20 21:08:32,039 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 67 treesize of output 59 [2022-07-20 21:08:32,061 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 17 treesize of output 15 [2022-07-20 21:08:32,064 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 34 treesize of output 30 [2022-07-20 21:08:32,204 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-20 21:08:32,204 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1458839212] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-20 21:08:32,204 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-20 21:08:32,204 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 14, 18] total 39 [2022-07-20 21:08:32,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989405312] [2022-07-20 21:08:32,204 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-20 21:08:32,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-07-20 21:08:32,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 21:08:32,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-07-20 21:08:32,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=215, Invalid=1267, Unknown=0, NotChecked=0, Total=1482 [2022-07-20 21:08:32,206 INFO L87 Difference]: Start difference. First operand 60 states and 64 transitions. Second operand has 39 states, 39 states have (on average 4.3076923076923075) internal successors, (168), 39 states have internal predecessors, (168), 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) [2022-07-20 21:08:33,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 21:08:33,739 INFO L93 Difference]: Finished difference Result 196 states and 213 transitions. [2022-07-20 21:08:33,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-07-20 21:08:33,740 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 4.3076923076923075) internal successors, (168), 39 states have internal predecessors, (168), 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 59 [2022-07-20 21:08:33,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 21:08:33,741 INFO L225 Difference]: With dead ends: 196 [2022-07-20 21:08:33,741 INFO L226 Difference]: Without dead ends: 186 [2022-07-20 21:08:33,744 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 111 SyntacticMatches, 21 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2148 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=942, Invalid=5700, Unknown=0, NotChecked=0, Total=6642 [2022-07-20 21:08:33,744 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 404 mSDsluCounter, 230 mSDsCounter, 0 mSdLazyCounter, 784 mSolverCounterSat, 185 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 404 SdHoareTripleChecker+Valid, 253 SdHoareTripleChecker+Invalid, 1083 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 185 IncrementalHoareTripleChecker+Valid, 784 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 114 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-20 21:08:33,745 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [404 Valid, 253 Invalid, 1083 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [185 Valid, 784 Invalid, 0 Unknown, 114 Unchecked, 0.5s Time] [2022-07-20 21:08:33,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2022-07-20 21:08:33,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 138. [2022-07-20 21:08:33,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 137 states have (on average 1.0875912408759123) internal successors, (149), 137 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) [2022-07-20 21:08:33,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 149 transitions. [2022-07-20 21:08:33,768 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 149 transitions. Word has length 59 [2022-07-20 21:08:33,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 21:08:33,769 INFO L495 AbstractCegarLoop]: Abstraction has 138 states and 149 transitions. [2022-07-20 21:08:33,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 4.3076923076923075) internal successors, (168), 39 states have internal predecessors, (168), 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) [2022-07-20 21:08:33,769 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 149 transitions. [2022-07-20 21:08:33,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-07-20 21:08:33,770 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 21:08:33,770 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 21:08:33,787 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-20 21:08:33,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-20 21:08:33,975 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 21:08:33,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 21:08:33,976 INFO L85 PathProgramCache]: Analyzing trace with hash -1827793739, now seen corresponding path program 5 times [2022-07-20 21:08:33,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 21:08:33,976 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235150077] [2022-07-20 21:08:33,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 21:08:33,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 21:08:33,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 21:08:34,140 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 1 proven. 20 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-07-20 21:08:34,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 21:08:34,140 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235150077] [2022-07-20 21:08:34,140 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1235150077] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-20 21:08:34,140 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [233599265] [2022-07-20 21:08:34,140 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-07-20 21:08:34,140 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-20 21:08:34,141 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-20 21:08:34,144 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) [2022-07-20 21:08:34,154 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-20 21:08:34,486 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-07-20 21:08:34,486 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-20 21:08:34,489 INFO L263 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-20 21:08:34,492 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 21:08:34,631 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 6 proven. 15 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-07-20 21:08:34,631 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-20 21:08:34,886 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 6 proven. 15 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-07-20 21:08:34,886 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [233599265] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-20 21:08:34,886 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-20 21:08:34,886 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 9] total 18 [2022-07-20 21:08:34,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600473080] [2022-07-20 21:08:34,887 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-20 21:08:34,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-20 21:08:34,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 21:08:34,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-20 21:08:34,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=229, Unknown=0, NotChecked=0, Total=306 [2022-07-20 21:08:34,888 INFO L87 Difference]: Start difference. First operand 138 states and 149 transitions. Second operand has 18 states, 18 states have (on average 4.666666666666667) internal successors, (84), 18 states have internal predecessors, (84), 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) [2022-07-20 21:08:35,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 21:08:35,261 INFO L93 Difference]: Finished difference Result 259 states and 281 transitions. [2022-07-20 21:08:35,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-20 21:08:35,262 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.666666666666667) internal successors, (84), 18 states have internal predecessors, (84), 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 63 [2022-07-20 21:08:35,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 21:08:35,263 INFO L225 Difference]: With dead ends: 259 [2022-07-20 21:08:35,264 INFO L226 Difference]: Without dead ends: 189 [2022-07-20 21:08:35,264 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 118 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 193 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=175, Invalid=527, Unknown=0, NotChecked=0, Total=702 [2022-07-20 21:08:35,265 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 157 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 516 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 560 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 516 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-20 21:08:35,265 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [157 Valid, 141 Invalid, 560 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 516 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-20 21:08:35,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2022-07-20 21:08:35,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 160. [2022-07-20 21:08:35,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 159 states have (on average 1.0817610062893082) internal successors, (172), 159 states have internal predecessors, (172), 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) [2022-07-20 21:08:35,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 172 transitions. [2022-07-20 21:08:35,281 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 172 transitions. Word has length 63 [2022-07-20 21:08:35,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 21:08:35,281 INFO L495 AbstractCegarLoop]: Abstraction has 160 states and 172 transitions. [2022-07-20 21:08:35,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.666666666666667) internal successors, (84), 18 states have internal predecessors, (84), 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) [2022-07-20 21:08:35,282 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 172 transitions. [2022-07-20 21:08:35,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-20 21:08:35,282 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 21:08:35,282 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 21:08:35,309 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-07-20 21:08:35,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-20 21:08:35,508 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 21:08:35,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 21:08:35,508 INFO L85 PathProgramCache]: Analyzing trace with hash 757222925, now seen corresponding path program 6 times [2022-07-20 21:08:35,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 21:08:35,508 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926180570] [2022-07-20 21:08:35,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 21:08:35,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 21:08:35,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 21:08:36,080 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 8 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 21:08:36,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 21:08:36,080 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926180570] [2022-07-20 21:08:36,081 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1926180570] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-20 21:08:36,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [632213808] [2022-07-20 21:08:36,081 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-07-20 21:08:36,081 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-20 21:08:36,081 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-20 21:08:36,082 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) [2022-07-20 21:08:36,083 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-20 21:08:36,188 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-07-20 21:08:36,188 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-20 21:08:36,189 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 46 conjunts are in the unsatisfiable core [2022-07-20 21:08:36,193 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 21:08:36,301 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 16 treesize of output 12 [2022-07-20 21:08:36,344 INFO L356 Elim1Store]: treesize reduction 84, result has 18.4 percent of original size [2022-07-20 21:08:36,345 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 2 case distinctions, treesize of input 28 treesize of output 31 [2022-07-20 21:08:36,411 INFO L356 Elim1Store]: treesize reduction 33, result has 21.4 percent of original size [2022-07-20 21:08:36,411 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 26 treesize of output 25 [2022-07-20 21:08:36,431 INFO L356 Elim1Store]: treesize reduction 114, result has 16.2 percent of original size [2022-07-20 21:08:36,431 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 2 case distinctions, treesize of input 34 treesize of output 37 [2022-07-20 21:08:36,470 INFO L356 Elim1Store]: treesize reduction 42, result has 22.2 percent of original size [2022-07-20 21:08:36,471 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 28 [2022-07-20 21:08:36,515 INFO L356 Elim1Store]: treesize reduction 96, result has 16.5 percent of original size [2022-07-20 21:08:36,515 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 4 case distinctions, treesize of input 43 treesize of output 34 [2022-07-20 21:08:36,834 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 8 proven. 56 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-20 21:08:36,834 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-20 21:08:37,324 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 35 treesize of output 31 [2022-07-20 21:08:37,326 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 67 treesize of output 59 [2022-07-20 21:08:37,537 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 62 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-07-20 21:08:37,537 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [632213808] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-20 21:08:37,537 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-20 21:08:37,537 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 15, 15] total 46 [2022-07-20 21:08:37,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96485370] [2022-07-20 21:08:37,538 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-20 21:08:37,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-07-20 21:08:37,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 21:08:37,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-07-20 21:08:37,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=206, Invalid=1864, Unknown=0, NotChecked=0, Total=2070 [2022-07-20 21:08:37,540 INFO L87 Difference]: Start difference. First operand 160 states and 172 transitions. Second operand has 46 states, 46 states have (on average 3.869565217391304) internal successors, (178), 46 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) [2022-07-20 21:08:41,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 21:08:41,829 INFO L93 Difference]: Finished difference Result 262 states and 287 transitions. [2022-07-20 21:08:41,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2022-07-20 21:08:41,829 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 3.869565217391304) internal successors, (178), 46 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) Word has length 65 [2022-07-20 21:08:41,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 21:08:41,831 INFO L225 Difference]: With dead ends: 262 [2022-07-20 21:08:41,831 INFO L226 Difference]: Without dead ends: 208 [2022-07-20 21:08:41,834 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 112 SyntacticMatches, 11 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4005 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=1910, Invalid=12610, Unknown=0, NotChecked=0, Total=14520 [2022-07-20 21:08:41,834 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 1072 mSDsluCounter, 214 mSDsCounter, 0 mSdLazyCounter, 1415 mSolverCounterSat, 647 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1072 SdHoareTripleChecker+Valid, 239 SdHoareTripleChecker+Invalid, 2156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 647 IncrementalHoareTripleChecker+Valid, 1415 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 94 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-20 21:08:41,834 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1072 Valid, 239 Invalid, 2156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [647 Valid, 1415 Invalid, 0 Unknown, 94 Unchecked, 0.9s Time] [2022-07-20 21:08:41,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2022-07-20 21:08:41,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 133. [2022-07-20 21:08:41,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 132 states have (on average 1.0681818181818181) internal successors, (141), 132 states have internal predecessors, (141), 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) [2022-07-20 21:08:41,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 141 transitions. [2022-07-20 21:08:41,848 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 141 transitions. Word has length 65 [2022-07-20 21:08:41,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 21:08:41,848 INFO L495 AbstractCegarLoop]: Abstraction has 133 states and 141 transitions. [2022-07-20 21:08:41,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 3.869565217391304) internal successors, (178), 46 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) [2022-07-20 21:08:41,849 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 141 transitions. [2022-07-20 21:08:41,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-07-20 21:08:41,849 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 21:08:41,849 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 21:08:41,871 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-07-20 21:08:42,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-20 21:08:42,067 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 21:08:42,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 21:08:42,068 INFO L85 PathProgramCache]: Analyzing trace with hash -1229247639, now seen corresponding path program 7 times [2022-07-20 21:08:42,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 21:08:42,068 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223609375] [2022-07-20 21:08:42,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 21:08:42,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 21:08:42,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 21:08:42,699 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 6 proven. 69 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 21:08:42,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 21:08:42,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223609375] [2022-07-20 21:08:42,700 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1223609375] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-20 21:08:42,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [75984990] [2022-07-20 21:08:42,700 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-07-20 21:08:42,700 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-20 21:08:42,700 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-20 21:08:42,704 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) [2022-07-20 21:08:42,725 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-07-20 21:08:42,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 21:08:42,803 INFO L263 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 75 conjunts are in the unsatisfiable core [2022-07-20 21:08:42,816 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 21:08:42,891 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-07-20 21:08:42,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:08:42,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:08:42,922 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:08:42,923 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 37 treesize of output 40 [2022-07-20 21:08:42,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:08:42,958 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 26 treesize of output 25 [2022-07-20 21:08:42,971 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:08:42,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:08:42,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:08:42,973 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 34 treesize of output 37 [2022-07-20 21:08:43,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:08:43,018 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 26 treesize of output 25 [2022-07-20 21:08:43,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:08:43,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:08:43,029 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:08:43,030 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 34 treesize of output 37 [2022-07-20 21:08:43,054 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:08:43,059 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 29 treesize of output 28 [2022-07-20 21:08:43,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:08:43,072 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 49 treesize of output 31 [2022-07-20 21:08:43,092 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:08:43,092 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 26 treesize of output 25 [2022-07-20 21:08:43,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:08:43,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:08:43,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:08:43,103 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 34 treesize of output 37 [2022-07-20 21:08:43,132 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:08:43,132 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 26 treesize of output 25 [2022-07-20 21:08:43,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:08:43,138 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:08:43,138 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:08:43,139 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 34 treesize of output 37 [2022-07-20 21:08:43,169 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:08:43,169 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 29 treesize of output 28 [2022-07-20 21:08:43,188 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:08:43,189 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:08:43,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:08:43,192 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-20 21:08:43,192 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 1 case distinctions, treesize of input 58 treesize of output 43 [2022-07-20 21:08:43,229 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:08:43,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:08:43,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:08:43,232 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-20 21:08:43,234 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 1 case distinctions, treesize of input 35 treesize of output 37 [2022-07-20 21:08:43,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:08:43,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:08:43,247 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:08:43,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:08:43,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:08:43,249 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-20 21:08:43,250 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-20 21:08:43,250 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 49 [2022-07-20 21:08:43,487 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 6 proven. 69 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 21:08:43,487 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-20 21:10:23,474 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 145 treesize of output 139 [2022-07-20 21:10:23,479 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 975 treesize of output 967 [2022-07-20 21:10:23,756 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 2 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 21:10:23,757 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [75984990] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-20 21:10:23,757 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-20 21:10:23,757 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 16, 23] total 49 [2022-07-20 21:10:23,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466577425] [2022-07-20 21:10:23,757 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-20 21:10:23,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-07-20 21:10:23,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 21:10:23,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-07-20 21:10:23,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=334, Invalid=1979, Unknown=39, NotChecked=0, Total=2352 [2022-07-20 21:10:23,759 INFO L87 Difference]: Start difference. First operand 133 states and 141 transitions. Second operand has 49 states, 49 states have (on average 4.183673469387755) internal successors, (205), 49 states have internal predecessors, (205), 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) [2022-07-20 21:10:25,918 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse1 (select |c_#memory_int| |c_ULTIMATE.start_main_~#volArray~0#1.base|))) (and (<= 7 |c_ULTIMATE.start_main_~CCCELVOL3~0#1|) (let ((.cse0 (select .cse1 (+ (* |c_ULTIMATE.start_main_~i~0#1| 4) |c_ULTIMATE.start_main_~#volArray~0#1.offset|)))) (or (= .cse0 0) (<= |c_ULTIMATE.start_main_~MINVAL~0#1| .cse0))) (= |c_ULTIMATE.start_main_~#volArray~0#1.offset| 0) (= 2 |c_ULTIMATE.start_main_~MINVAL~0#1|) (forall ((|v_ULTIMATE.start_main_~i~0#1_163| Int)) (or (not (<= (+ |c_ULTIMATE.start_main_~i~0#1| 1) |v_ULTIMATE.start_main_~i~0#1_163|)) (forall ((v_ArrVal_599 Int) (v_ArrVal_575 Int) (v_ArrVal_573 Int) (|v_ULTIMATE.start_main_~i~0#1_155| Int) (v_ArrVal_580 Int) (v_ArrVal_567 Int) (v_ArrVal_578 Int) (v_ArrVal_600 Int)) (let ((.cse3 (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#volArray~0#1.base|) (+ (* 12 |v_ULTIMATE.start_main_~i~0#1_163|) (- 12) |c_ULTIMATE.start_main_~#volArray~0#1.offset|) v_ArrVal_567)) (.cse4 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| 12))) (let ((.cse2 (select (let ((.cse5 (* 12 |v_ULTIMATE.start_main_~i~0#1_155|))) (store (store (store (store (store (store .cse3 |c_ULTIMATE.start_main_~#volArray~0#1.offset| v_ArrVal_573) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| 8) v_ArrVal_575) .cse4 v_ArrVal_580) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| 20) v_ArrVal_578) (+ .cse5 |c_ULTIMATE.start_main_~#volArray~0#1.offset| (- 8)) v_ArrVal_600) (+ .cse5 (- 12) |c_ULTIMATE.start_main_~#volArray~0#1.offset|) v_ArrVal_599)) .cse4))) (or (<= |c_ULTIMATE.start_main_~MINVAL~0#1| .cse2) (not (<= 3 |v_ULTIMATE.start_main_~i~0#1_155|)) (not (<= (select .cse3 .cse4) v_ArrVal_580)) (= 0 .cse2))))))) (= |c_ULTIMATE.start_main_~CCCELVOL3~0#1| (select .cse1 12)) (not (= (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| (* 12 |c_ULTIMATE.start_main_~i~0#1|)) 24)))) is different from false [2022-07-20 21:10:33,908 WARN L833 $PredicateComparison]: unable to prove that (and (<= 7 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#volArray~0#1.base|) 12)) (= |c_ULTIMATE.start_main_~#volArray~0#1.offset| 0) (forall ((|v_ULTIMATE.start_main_~i~0#1_155| Int)) (or (forall ((v_ArrVal_599 Int) (v_ArrVal_600 Int)) (let ((.cse0 (select (let ((.cse1 (* 12 |v_ULTIMATE.start_main_~i~0#1_155|))) (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#volArray~0#1.base|) (+ .cse1 |c_ULTIMATE.start_main_~#volArray~0#1.offset| (- 8)) v_ArrVal_600) (+ .cse1 (- 12) |c_ULTIMATE.start_main_~#volArray~0#1.offset|) v_ArrVal_599)) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| 12)))) (or (= .cse0 0) (<= |c_ULTIMATE.start_main_~MINVAL~0#1| .cse0)))) (not (<= (+ |c_ULTIMATE.start_main_~i~0#1| 1) |v_ULTIMATE.start_main_~i~0#1_155|)))) (= 2 |c_ULTIMATE.start_main_~MINVAL~0#1|)) is different from false [2022-07-20 21:10:56,274 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse0 (select |c_#memory_int| |c_ULTIMATE.start_main_~#volArray~0#1.base|)) (.cse2 (* |c_ULTIMATE.start_main_~i~0#1| 4))) (and (<= 7 (select .cse0 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| 12))) (<= 7 (select .cse0 12)) (let ((.cse1 (select .cse0 (+ .cse2 |c_ULTIMATE.start_main_~#volArray~0#1.offset|)))) (or (= .cse1 0) (<= |c_ULTIMATE.start_main_~MINVAL~0#1| .cse1))) (= 0 (select .cse0 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| 20))) (= |c_ULTIMATE.start_main_~#volArray~0#1.offset| 0) (forall ((|v_ULTIMATE.start_main_~i~0#1_155| Int)) (or (forall ((v_ArrVal_599 Int) (v_ArrVal_600 Int)) (let ((.cse3 (select (let ((.cse4 (* 12 |v_ULTIMATE.start_main_~i~0#1_155|))) (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#volArray~0#1.base|) (+ .cse4 |c_ULTIMATE.start_main_~#volArray~0#1.offset| (- 8)) v_ArrVal_600) (+ .cse4 (- 12) |c_ULTIMATE.start_main_~#volArray~0#1.offset|) v_ArrVal_599)) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| 12)))) (or (= .cse3 0) (<= |c_ULTIMATE.start_main_~MINVAL~0#1| .cse3)))) (not (<= (+ |c_ULTIMATE.start_main_~i~0#1| 1) |v_ULTIMATE.start_main_~i~0#1_155|)))) (= 2 |c_ULTIMATE.start_main_~MINVAL~0#1|) (<= |c_ULTIMATE.start_main_~MINVAL~0#1| 2) (let ((.cse5 (select .cse0 (+ .cse2 |c_ULTIMATE.start_main_~#volArray~0#1.offset| 8)))) (or (<= |c_ULTIMATE.start_main_~MINVAL~0#1| .cse5) (= 0 .cse5))) (not (= (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| (* 12 |c_ULTIMATE.start_main_~i~0#1|)) 24)))) is different from false [2022-07-20 21:10:58,283 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse0 (select |c_#memory_int| |c_ULTIMATE.start_main_~#volArray~0#1.base|))) (and (<= 7 (select .cse0 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| 12))) (<= 7 (select .cse0 12)) (= 0 (select .cse0 (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| 20))) (= |c_ULTIMATE.start_main_~#volArray~0#1.offset| 0) (forall ((|v_ULTIMATE.start_main_~i~0#1_155| Int)) (or (forall ((v_ArrVal_599 Int) (v_ArrVal_600 Int)) (let ((.cse1 (select (let ((.cse2 (* 12 |v_ULTIMATE.start_main_~i~0#1_155|))) (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#volArray~0#1.base|) (+ .cse2 |c_ULTIMATE.start_main_~#volArray~0#1.offset| (- 8)) v_ArrVal_600) (+ .cse2 (- 12) |c_ULTIMATE.start_main_~#volArray~0#1.offset|) v_ArrVal_599)) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| 12)))) (or (= .cse1 0) (<= |c_ULTIMATE.start_main_~MINVAL~0#1| .cse1)))) (not (<= (+ |c_ULTIMATE.start_main_~i~0#1| 1) |v_ULTIMATE.start_main_~i~0#1_155|)))) (= 2 |c_ULTIMATE.start_main_~MINVAL~0#1|) (<= |c_ULTIMATE.start_main_~MINVAL~0#1| 2) (forall ((v_ArrVal_599 Int) (v_ArrVal_600 Int)) (let ((.cse3 (select (let ((.cse4 (* 12 |c_ULTIMATE.start_main_~i~0#1|))) (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#volArray~0#1.base|) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse4 (- 8)) v_ArrVal_600) (+ (- 12) |c_ULTIMATE.start_main_~#volArray~0#1.offset| .cse4) v_ArrVal_599)) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| 12)))) (or (= .cse3 0) (<= |c_ULTIMATE.start_main_~MINVAL~0#1| .cse3)))))) is different from false