./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/heap-data/cart.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e8d55036 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/heap-data/cart.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 85f7d1ed54d862786907cd1b4275170af31fb3969b21d7a2f2e5e352106544af --- Real Ultimate output --- This is Ultimate 0.2.2-?-e8d5503-m [2023-02-15 19:50:02,246 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-15 19:50:02,248 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-15 19:50:02,272 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-15 19:50:02,274 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-15 19:50:02,277 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-15 19:50:02,278 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-15 19:50:02,279 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-15 19:50:02,280 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-15 19:50:02,280 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-15 19:50:02,281 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-15 19:50:02,283 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-15 19:50:02,283 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-15 19:50:02,288 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-15 19:50:02,289 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-15 19:50:02,290 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-15 19:50:02,292 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-15 19:50:02,293 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-15 19:50:02,295 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-15 19:50:02,296 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-15 19:50:02,300 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-15 19:50:02,301 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-15 19:50:02,301 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-15 19:50:02,302 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-15 19:50:02,304 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-15 19:50:02,306 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-15 19:50:02,306 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-15 19:50:02,306 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-15 19:50:02,307 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-15 19:50:02,308 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-15 19:50:02,308 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-15 19:50:02,309 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-15 19:50:02,310 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-15 19:50:02,310 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-15 19:50:02,311 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-15 19:50:02,312 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-15 19:50:02,312 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-15 19:50:02,312 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-15 19:50:02,312 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-15 19:50:02,313 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-15 19:50:02,314 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-15 19:50:02,315 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-02-15 19:50:02,336 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-15 19:50:02,336 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-15 19:50:02,337 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-15 19:50:02,337 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-15 19:50:02,337 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-15 19:50:02,338 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-15 19:50:02,338 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-15 19:50:02,338 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-15 19:50:02,338 INFO L138 SettingsManager]: * Use SBE=true [2023-02-15 19:50:02,338 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-15 19:50:02,339 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-15 19:50:02,339 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-15 19:50:02,339 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-15 19:50:02,340 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-15 19:50:02,340 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-15 19:50:02,340 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-15 19:50:02,340 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-15 19:50:02,340 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-15 19:50:02,340 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-15 19:50:02,340 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-15 19:50:02,341 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-15 19:50:02,341 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-15 19:50:02,341 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-15 19:50:02,341 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-15 19:50:02,341 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-15 19:50:02,341 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-15 19:50:02,341 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-15 19:50:02,342 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-15 19:50:02,342 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-15 19:50:02,342 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-15 19:50:02,342 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-15 19:50:02,342 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-15 19:50:02,343 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-15 19:50:02,343 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-15 19:50:02,343 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-15 19:50:02,343 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 85f7d1ed54d862786907cd1b4275170af31fb3969b21d7a2f2e5e352106544af [2023-02-15 19:50:02,585 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-15 19:50:02,616 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-15 19:50:02,618 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-15 19:50:02,619 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-15 19:50:02,619 INFO L275 PluginConnector]: CDTParser initialized [2023-02-15 19:50:02,620 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/heap-data/cart.i [2023-02-15 19:50:03,653 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-15 19:50:03,859 INFO L351 CDTParser]: Found 1 translation units. [2023-02-15 19:50:03,859 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/heap-data/cart.i [2023-02-15 19:50:03,868 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/df5d8def6/e2d5bebba30748c8af02003e84c20d36/FLAGce2690cc9 [2023-02-15 19:50:04,274 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/df5d8def6/e2d5bebba30748c8af02003e84c20d36 [2023-02-15 19:50:04,276 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-15 19:50:04,278 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-15 19:50:04,280 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-15 19:50:04,280 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-15 19:50:04,286 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-15 19:50:04,286 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 07:50:04" (1/1) ... [2023-02-15 19:50:04,288 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@763f456 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 07:50:04, skipping insertion in model container [2023-02-15 19:50:04,289 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 07:50:04" (1/1) ... [2023-02-15 19:50:04,314 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-15 19:50:04,360 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-15 19:50:04,501 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/heap-data/cart.i[23713,23726] [2023-02-15 19:50:04,504 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 19:50:04,510 INFO L203 MainTranslator]: Completed pre-run [2023-02-15 19:50:04,531 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/heap-data/cart.i[23713,23726] [2023-02-15 19:50:04,532 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 19:50:04,548 INFO L208 MainTranslator]: Completed translation [2023-02-15 19:50:04,548 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 07:50:04 WrapperNode [2023-02-15 19:50:04,548 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-15 19:50:04,549 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-15 19:50:04,549 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-15 19:50:04,549 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-15 19:50:04,553 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 07:50:04" (1/1) ... [2023-02-15 19:50:04,560 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 07:50:04" (1/1) ... [2023-02-15 19:50:04,571 INFO L138 Inliner]: procedures = 121, calls = 25, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 77 [2023-02-15 19:50:04,571 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-15 19:50:04,571 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-15 19:50:04,571 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-15 19:50:04,572 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-15 19:50:04,576 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 07:50:04" (1/1) ... [2023-02-15 19:50:04,576 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 07:50:04" (1/1) ... [2023-02-15 19:50:04,578 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 07:50:04" (1/1) ... [2023-02-15 19:50:04,578 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 07:50:04" (1/1) ... [2023-02-15 19:50:04,581 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 07:50:04" (1/1) ... [2023-02-15 19:50:04,583 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 07:50:04" (1/1) ... [2023-02-15 19:50:04,584 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 07:50:04" (1/1) ... [2023-02-15 19:50:04,585 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 07:50:04" (1/1) ... [2023-02-15 19:50:04,586 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-15 19:50:04,587 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-15 19:50:04,587 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-15 19:50:04,587 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-15 19:50:04,588 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 07:50:04" (1/1) ... [2023-02-15 19:50:04,591 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-15 19:50:04,600 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 19:50:04,612 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-02-15 19:50:04,613 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-02-15 19:50:04,649 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-02-15 19:50:04,650 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-02-15 19:50:04,650 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-02-15 19:50:04,650 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-15 19:50:04,650 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-02-15 19:50:04,650 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-02-15 19:50:04,651 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-15 19:50:04,651 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-15 19:50:04,651 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-15 19:50:04,742 INFO L235 CfgBuilder]: Building ICFG [2023-02-15 19:50:04,746 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-15 19:50:04,878 INFO L276 CfgBuilder]: Performing block encoding [2023-02-15 19:50:04,882 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-15 19:50:04,883 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2023-02-15 19:50:04,884 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 07:50:04 BoogieIcfgContainer [2023-02-15 19:50:04,884 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-15 19:50:04,886 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-15 19:50:04,886 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-15 19:50:04,888 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-15 19:50:04,888 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.02 07:50:04" (1/3) ... [2023-02-15 19:50:04,889 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75a0ccde and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 07:50:04, skipping insertion in model container [2023-02-15 19:50:04,889 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 07:50:04" (2/3) ... [2023-02-15 19:50:04,889 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75a0ccde and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 07:50:04, skipping insertion in model container [2023-02-15 19:50:04,889 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 07:50:04" (3/3) ... [2023-02-15 19:50:04,890 INFO L112 eAbstractionObserver]: Analyzing ICFG cart.i [2023-02-15 19:50:04,901 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-15 19:50:04,902 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-02-15 19:50:04,933 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-15 19:50:04,937 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@59edcc93, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-15 19:50:04,937 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-02-15 19:50:04,940 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 18 states have (on average 1.6111111111111112) internal successors, (29), 19 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) [2023-02-15 19:50:04,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-02-15 19:50:04,944 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 19:50:04,945 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 19:50:04,945 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 19:50:04,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 19:50:04,949 INFO L85 PathProgramCache]: Analyzing trace with hash -680841488, now seen corresponding path program 1 times [2023-02-15 19:50:04,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 19:50:04,955 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248913715] [2023-02-15 19:50:04,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 19:50:04,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 19:50:05,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:50:05,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 19:50:05,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 19:50:05,048 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248913715] [2023-02-15 19:50:05,049 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [248913715] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 19:50:05,049 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 19:50:05,049 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-15 19:50:05,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652466562] [2023-02-15 19:50:05,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 19:50:05,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-02-15 19:50:05,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 19:50:05,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-02-15 19:50:05,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-15 19:50:05,085 INFO L87 Difference]: Start difference. First operand has 20 states, 18 states have (on average 1.6111111111111112) internal successors, (29), 19 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) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:50:05,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 19:50:05,098 INFO L93 Difference]: Finished difference Result 34 states and 49 transitions. [2023-02-15 19:50:05,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-02-15 19:50:05,099 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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 9 [2023-02-15 19:50:05,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 19:50:05,104 INFO L225 Difference]: With dead ends: 34 [2023-02-15 19:50:05,104 INFO L226 Difference]: Without dead ends: 17 [2023-02-15 19:50:05,106 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-15 19:50:05,108 INFO L413 NwaCegarLoop]: 25 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, 25 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 19:50:05,109 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 19:50:05,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2023-02-15 19:50:05,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2023-02-15 19:50:05,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.375) internal successors, (22), 16 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:50:05,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 22 transitions. [2023-02-15 19:50:05,133 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 22 transitions. Word has length 9 [2023-02-15 19:50:05,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 19:50:05,134 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 22 transitions. [2023-02-15 19:50:05,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:50:05,134 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 22 transitions. [2023-02-15 19:50:05,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-02-15 19:50:05,134 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 19:50:05,135 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 19:50:05,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-02-15 19:50:05,135 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 19:50:05,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 19:50:05,136 INFO L85 PathProgramCache]: Analyzing trace with hash 1910225148, now seen corresponding path program 1 times [2023-02-15 19:50:05,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 19:50:05,136 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345645649] [2023-02-15 19:50:05,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 19:50:05,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 19:50:05,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:50:05,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 19:50:05,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 19:50:05,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345645649] [2023-02-15 19:50:05,312 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1345645649] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 19:50:05,312 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 19:50:05,312 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-15 19:50:05,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814859709] [2023-02-15 19:50:05,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 19:50:05,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-15 19:50:05,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 19:50:05,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-15 19:50:05,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-15 19:50:05,315 INFO L87 Difference]: Start difference. First operand 17 states and 22 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:50:05,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 19:50:05,374 INFO L93 Difference]: Finished difference Result 36 states and 47 transitions. [2023-02-15 19:50:05,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-15 19:50:05,375 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2023-02-15 19:50:05,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 19:50:05,376 INFO L225 Difference]: With dead ends: 36 [2023-02-15 19:50:05,376 INFO L226 Difference]: Without dead ends: 21 [2023-02-15 19:50:05,378 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-02-15 19:50:05,380 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 5 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 19:50:05,380 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 48 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 19:50:05,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2023-02-15 19:50:05,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2023-02-15 19:50:05,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 20 states have (on average 1.35) internal successors, (27), 20 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:50:05,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 27 transitions. [2023-02-15 19:50:05,384 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 27 transitions. Word has length 12 [2023-02-15 19:50:05,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 19:50:05,384 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 27 transitions. [2023-02-15 19:50:05,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:50:05,384 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 27 transitions. [2023-02-15 19:50:05,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-02-15 19:50:05,385 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 19:50:05,385 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 19:50:05,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-02-15 19:50:05,385 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 19:50:05,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 19:50:05,386 INFO L85 PathProgramCache]: Analyzing trace with hash 1849394690, now seen corresponding path program 1 times [2023-02-15 19:50:05,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 19:50:05,386 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155574367] [2023-02-15 19:50:05,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 19:50:05,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 19:50:05,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:50:05,453 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 19:50:05,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 19:50:05,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155574367] [2023-02-15 19:50:05,454 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [155574367] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 19:50:05,454 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 19:50:05,455 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-15 19:50:05,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098380892] [2023-02-15 19:50:05,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 19:50:05,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-15 19:50:05,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 19:50:05,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-15 19:50:05,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-15 19:50:05,456 INFO L87 Difference]: Start difference. First operand 21 states and 27 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:50:05,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 19:50:05,484 INFO L93 Difference]: Finished difference Result 36 states and 45 transitions. [2023-02-15 19:50:05,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-15 19:50:05,485 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2023-02-15 19:50:05,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 19:50:05,485 INFO L225 Difference]: With dead ends: 36 [2023-02-15 19:50:05,486 INFO L226 Difference]: Without dead ends: 30 [2023-02-15 19:50:05,486 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-02-15 19:50:05,487 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 35 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 19:50:05,487 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 41 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 19:50:05,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2023-02-15 19:50:05,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 25. [2023-02-15 19:50:05,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 24 states have (on average 1.375) internal successors, (33), 24 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:50:05,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 33 transitions. [2023-02-15 19:50:05,491 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 33 transitions. Word has length 16 [2023-02-15 19:50:05,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 19:50:05,492 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 33 transitions. [2023-02-15 19:50:05,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:50:05,492 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 33 transitions. [2023-02-15 19:50:05,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-02-15 19:50:05,492 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 19:50:05,493 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 19:50:05,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-02-15 19:50:05,493 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 19:50:05,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 19:50:05,494 INFO L85 PathProgramCache]: Analyzing trace with hash -1690179633, now seen corresponding path program 1 times [2023-02-15 19:50:05,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 19:50:05,494 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101116234] [2023-02-15 19:50:05,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 19:50:05,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 19:50:05,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:50:05,538 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-02-15 19:50:05,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 19:50:05,540 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101116234] [2023-02-15 19:50:05,540 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1101116234] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 19:50:05,541 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 19:50:05,541 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-15 19:50:05,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824498009] [2023-02-15 19:50:05,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 19:50:05,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-15 19:50:05,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 19:50:05,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-15 19:50:05,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 19:50:05,543 INFO L87 Difference]: Start difference. First operand 25 states and 33 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:50:05,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 19:50:05,557 INFO L93 Difference]: Finished difference Result 37 states and 50 transitions. [2023-02-15 19:50:05,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-15 19:50:05,558 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 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 20 [2023-02-15 19:50:05,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 19:50:05,558 INFO L225 Difference]: With dead ends: 37 [2023-02-15 19:50:05,559 INFO L226 Difference]: Without dead ends: 27 [2023-02-15 19:50:05,560 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 19:50:05,560 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 0 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 19:50:05,561 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 37 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 19:50:05,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2023-02-15 19:50:05,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2023-02-15 19:50:05,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.3461538461538463) internal successors, (35), 26 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:50:05,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 35 transitions. [2023-02-15 19:50:05,564 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 35 transitions. Word has length 20 [2023-02-15 19:50:05,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 19:50:05,565 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 35 transitions. [2023-02-15 19:50:05,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:50:05,565 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 35 transitions. [2023-02-15 19:50:05,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-02-15 19:50:05,566 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 19:50:05,566 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 19:50:05,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-02-15 19:50:05,566 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 19:50:05,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 19:50:05,567 INFO L85 PathProgramCache]: Analyzing trace with hash 1795441037, now seen corresponding path program 1 times [2023-02-15 19:50:05,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 19:50:05,567 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708078374] [2023-02-15 19:50:05,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 19:50:05,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 19:50:05,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:50:05,913 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 19:50:05,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 19:50:05,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708078374] [2023-02-15 19:50:05,914 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1708078374] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 19:50:05,915 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1270671801] [2023-02-15 19:50:05,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 19:50:05,915 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 19:50:05,915 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 19:50:05,917 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 19:50:05,919 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-15 19:50:05,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:50:05,993 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 24 conjunts are in the unsatisfiable core [2023-02-15 19:50:05,997 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 19:50:06,127 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 25 [2023-02-15 19:50:06,170 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-15 19:50:06,171 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 10 [2023-02-15 19:50:06,177 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 19:50:06,177 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 19:50:06,311 INFO L321 Elim1Store]: treesize reduction 12, result has 52.0 percent of original size [2023-02-15 19:50:06,312 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 426 treesize of output 379 [2023-02-15 19:50:06,425 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-02-15 19:50:06,426 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1270671801] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 19:50:06,426 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 19:50:06,426 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 13 [2023-02-15 19:50:06,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150174942] [2023-02-15 19:50:06,426 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 19:50:06,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-02-15 19:50:06,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 19:50:06,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-02-15 19:50:06,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2023-02-15 19:50:06,428 INFO L87 Difference]: Start difference. First operand 27 states and 35 transitions. Second operand has 13 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 13 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:50:06,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 19:50:06,632 INFO L93 Difference]: Finished difference Result 48 states and 59 transitions. [2023-02-15 19:50:06,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-02-15 19:50:06,633 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 13 states have internal predecessors, (33), 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 20 [2023-02-15 19:50:06,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 19:50:06,633 INFO L225 Difference]: With dead ends: 48 [2023-02-15 19:50:06,633 INFO L226 Difference]: Without dead ends: 46 [2023-02-15 19:50:06,634 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 31 SyntacticMatches, 4 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=83, Invalid=223, Unknown=0, NotChecked=0, Total=306 [2023-02-15 19:50:06,634 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 75 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 19:50:06,635 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 119 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 19:50:06,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2023-02-15 19:50:06,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 35. [2023-02-15 19:50:06,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 34 states have (on average 1.3529411764705883) internal successors, (46), 34 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:50:06,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 46 transitions. [2023-02-15 19:50:06,639 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 46 transitions. Word has length 20 [2023-02-15 19:50:06,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 19:50:06,640 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 46 transitions. [2023-02-15 19:50:06,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 13 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:50:06,640 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 46 transitions. [2023-02-15 19:50:06,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-02-15 19:50:06,641 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 19:50:06,641 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 19:50:06,648 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-02-15 19:50:06,848 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 [2023-02-15 19:50:06,849 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 19:50:06,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 19:50:06,849 INFO L85 PathProgramCache]: Analyzing trace with hash -1534874359, now seen corresponding path program 1 times [2023-02-15 19:50:06,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 19:50:06,850 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242181903] [2023-02-15 19:50:06,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 19:50:06,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 19:50:06,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:50:06,983 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-02-15 19:50:06,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 19:50:06,984 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242181903] [2023-02-15 19:50:06,984 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [242181903] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 19:50:06,984 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [600066136] [2023-02-15 19:50:06,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 19:50:06,984 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 19:50:06,985 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 19:50:06,986 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 19:50:07,035 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-02-15 19:50:07,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:50:07,068 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 29 conjunts are in the unsatisfiable core [2023-02-15 19:50:07,070 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 19:50:07,124 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-02-15 19:50:07,129 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-02-15 19:50:07,215 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-02-15 19:50:07,218 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-02-15 19:50:07,220 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 19:50:07,220 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 19:50:07,262 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 29 [2023-02-15 19:50:07,273 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-15 19:50:07,273 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 40 [2023-02-15 19:50:07,276 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 35 [2023-02-15 19:50:07,289 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-15 19:50:07,290 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 46 [2023-02-15 19:50:07,326 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-02-15 19:50:07,326 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [600066136] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 19:50:07,326 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 19:50:07,326 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 7] total 13 [2023-02-15 19:50:07,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334061916] [2023-02-15 19:50:07,327 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 19:50:07,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-02-15 19:50:07,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 19:50:07,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-02-15 19:50:07,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2023-02-15 19:50:07,328 INFO L87 Difference]: Start difference. First operand 35 states and 46 transitions. Second operand has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:50:07,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 19:50:07,479 INFO L93 Difference]: Finished difference Result 59 states and 71 transitions. [2023-02-15 19:50:07,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-02-15 19:50:07,479 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2023-02-15 19:50:07,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 19:50:07,480 INFO L225 Difference]: With dead ends: 59 [2023-02-15 19:50:07,480 INFO L226 Difference]: Without dead ends: 49 [2023-02-15 19:50:07,480 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=74, Invalid=232, Unknown=0, NotChecked=0, Total=306 [2023-02-15 19:50:07,481 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 65 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 19:50:07,481 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 127 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 19:50:07,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2023-02-15 19:50:07,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 36. [2023-02-15 19:50:07,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 35 states have (on average 1.3428571428571427) internal successors, (47), 35 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:50:07,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 47 transitions. [2023-02-15 19:50:07,485 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 47 transitions. Word has length 23 [2023-02-15 19:50:07,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 19:50:07,485 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 47 transitions. [2023-02-15 19:50:07,485 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:50:07,486 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 47 transitions. [2023-02-15 19:50:07,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-02-15 19:50:07,486 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 19:50:07,486 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 19:50:07,493 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-02-15 19:50:07,686 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 [2023-02-15 19:50:07,687 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 19:50:07,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 19:50:07,687 INFO L85 PathProgramCache]: Analyzing trace with hash 379469720, now seen corresponding path program 2 times [2023-02-15 19:50:07,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 19:50:07,687 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258399541] [2023-02-15 19:50:07,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 19:50:07,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 19:50:07,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:50:07,919 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 19:50:07,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 19:50:07,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258399541] [2023-02-15 19:50:07,920 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [258399541] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 19:50:07,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [294297452] [2023-02-15 19:50:07,920 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-15 19:50:07,920 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 19:50:07,920 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 19:50:07,932 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 19:50:07,933 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-02-15 19:50:08,006 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-15 19:50:08,006 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 19:50:08,007 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 35 conjunts are in the unsatisfiable core [2023-02-15 19:50:08,009 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 19:50:08,022 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-02-15 19:50:08,026 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-02-15 19:50:08,084 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-02-15 19:50:08,085 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-02-15 19:50:08,090 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 19:50:08,090 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 19:50:08,124 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 19:50:08,124 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [294297452] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 19:50:08,124 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 19:50:08,124 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 8 [2023-02-15 19:50:08,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120572921] [2023-02-15 19:50:08,125 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 19:50:08,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-02-15 19:50:08,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 19:50:08,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-02-15 19:50:08,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-02-15 19:50:08,126 INFO L87 Difference]: Start difference. First operand 36 states and 47 transitions. Second operand has 8 states, 8 states have (on average 4.125) internal successors, (33), 8 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:50:08,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 19:50:08,191 INFO L93 Difference]: Finished difference Result 67 states and 88 transitions. [2023-02-15 19:50:08,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-15 19:50:08,192 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.125) internal successors, (33), 8 states have internal predecessors, (33), 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 24 [2023-02-15 19:50:08,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 19:50:08,192 INFO L225 Difference]: With dead ends: 67 [2023-02-15 19:50:08,192 INFO L226 Difference]: Without dead ends: 40 [2023-02-15 19:50:08,192 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2023-02-15 19:50:08,193 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 23 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 19:50:08,193 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 86 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 19:50:08,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2023-02-15 19:50:08,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2023-02-15 19:50:08,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 39 states have (on average 1.3333333333333333) internal successors, (52), 39 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:50:08,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 52 transitions. [2023-02-15 19:50:08,197 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 52 transitions. Word has length 24 [2023-02-15 19:50:08,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 19:50:08,197 INFO L495 AbstractCegarLoop]: Abstraction has 40 states and 52 transitions. [2023-02-15 19:50:08,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.125) internal successors, (33), 8 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:50:08,198 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 52 transitions. [2023-02-15 19:50:08,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-02-15 19:50:08,198 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 19:50:08,198 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 19:50:08,203 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-02-15 19:50:08,402 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 [2023-02-15 19:50:08,404 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 19:50:08,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 19:50:08,404 INFO L85 PathProgramCache]: Analyzing trace with hash -3886178, now seen corresponding path program 3 times [2023-02-15 19:50:08,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 19:50:08,405 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185537885] [2023-02-15 19:50:08,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 19:50:08,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 19:50:08,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:50:08,894 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 7 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 19:50:08,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 19:50:08,894 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185537885] [2023-02-15 19:50:08,895 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1185537885] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 19:50:08,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [429553135] [2023-02-15 19:50:08,895 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-15 19:50:08,895 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 19:50:08,895 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 19:50:08,896 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 19:50:08,946 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-02-15 19:50:09,034 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-02-15 19:50:09,034 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 19:50:09,036 INFO L263 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 56 conjunts are in the unsatisfiable core [2023-02-15 19:50:09,038 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 19:50:09,043 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-02-15 19:50:09,064 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-02-15 19:50:09,069 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-02-15 19:50:09,074 INFO L321 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2023-02-15 19:50:09,074 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2023-02-15 19:50:09,183 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-02-15 19:50:09,186 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 25 [2023-02-15 19:50:09,190 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2023-02-15 19:50:09,214 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 20 [2023-02-15 19:50:09,236 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-15 19:50:09,237 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 10 [2023-02-15 19:50:09,239 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 7 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 19:50:09,239 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 19:50:09,347 WARN L837 $PredicateComparison]: unable to prove that (or |c_ULTIMATE.start_main_#t~short8#1| (forall ((v_ArrVal_387 Int) (v_ArrVal_386 Int) (v_ArrVal_393 (Array Int Int))) (let ((.cse0 (select |c_#memory_int| |c_ULTIMATE.start_main_~i~0#1.base|)) (.cse1 (+ |c_ULTIMATE.start_main_~i~0#1.offset| 4))) (or (not (<= v_ArrVal_387 |c_ULTIMATE.start_main_~order~0#1|)) (not (<= (select .cse0 .cse1) v_ArrVal_386)) (let ((.cse2 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~i~0#1.base| (store (store .cse0 (+ |c_ULTIMATE.start_main_~i~0#1.offset| 8) v_ArrVal_387) .cse1 v_ArrVal_386)) (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~i~0#1.base|) |c_ULTIMATE.start_main_~i~0#1.offset|) v_ArrVal_393) |c_ULTIMATE.start_main_~l~0#1.base|))) (< (select .cse2 (+ |c_ULTIMATE.start_main_~l~0#1.offset| 8)) (+ (select .cse2 (+ |c_ULTIMATE.start_main_~l~0#1.offset| 4)) 1))))))) is different from false [2023-02-15 19:50:09,357 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-15 19:50:09,357 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 81 treesize of output 59 [2023-02-15 19:50:09,378 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-15 19:50:09,378 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 63 treesize of output 87 [2023-02-15 19:50:09,383 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-15 19:50:09,383 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 5 [2023-02-15 19:50:09,502 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 7 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2023-02-15 19:50:09,502 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [429553135] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 19:50:09,502 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 19:50:09,502 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 21 [2023-02-15 19:50:09,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617025000] [2023-02-15 19:50:09,503 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 19:50:09,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-02-15 19:50:09,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 19:50:09,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-02-15 19:50:09,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=311, Unknown=2, NotChecked=36, Total=420 [2023-02-15 19:50:09,505 INFO L87 Difference]: Start difference. First operand 40 states and 52 transitions. Second operand has 21 states, 21 states have (on average 2.9523809523809526) internal successors, (62), 21 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:50:09,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 19:50:09,814 INFO L93 Difference]: Finished difference Result 65 states and 81 transitions. [2023-02-15 19:50:09,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-02-15 19:50:09,815 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.9523809523809526) internal successors, (62), 21 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2023-02-15 19:50:09,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 19:50:09,815 INFO L225 Difference]: With dead ends: 65 [2023-02-15 19:50:09,816 INFO L226 Difference]: Without dead ends: 60 [2023-02-15 19:50:09,816 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 44 SyntacticMatches, 4 SemanticMatches, 25 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=159, Invalid=493, Unknown=2, NotChecked=48, Total=702 [2023-02-15 19:50:09,816 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 211 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 211 SdHoareTripleChecker+Valid, 203 SdHoareTripleChecker+Invalid, 196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 33 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 19:50:09,817 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [211 Valid, 203 Invalid, 196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 151 Invalid, 0 Unknown, 33 Unchecked, 0.1s Time] [2023-02-15 19:50:09,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2023-02-15 19:50:09,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 49. [2023-02-15 19:50:09,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 48 states have (on average 1.3333333333333333) internal successors, (64), 48 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) [2023-02-15 19:50:09,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 64 transitions. [2023-02-15 19:50:09,822 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 64 transitions. Word has length 28 [2023-02-15 19:50:09,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 19:50:09,823 INFO L495 AbstractCegarLoop]: Abstraction has 49 states and 64 transitions. [2023-02-15 19:50:09,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.9523809523809526) internal successors, (62), 21 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:50:09,823 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 64 transitions. [2023-02-15 19:50:09,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-02-15 19:50:09,823 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 19:50:09,824 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 19:50:09,835 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-02-15 19:50:10,029 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 [2023-02-15 19:50:10,029 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 19:50:10,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 19:50:10,029 INFO L85 PathProgramCache]: Analyzing trace with hash 194884952, now seen corresponding path program 2 times [2023-02-15 19:50:10,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 19:50:10,030 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207495283] [2023-02-15 19:50:10,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 19:50:10,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 19:50:10,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:50:10,611 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 7 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 19:50:10,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 19:50:10,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207495283] [2023-02-15 19:50:10,612 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [207495283] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 19:50:10,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1224771179] [2023-02-15 19:50:10,612 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-15 19:50:10,612 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 19:50:10,612 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 19:50:10,613 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 19:50:10,627 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-02-15 19:50:10,714 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-15 19:50:10,714 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 19:50:10,715 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 63 conjunts are in the unsatisfiable core [2023-02-15 19:50:10,718 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 19:50:10,722 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-02-15 19:50:10,735 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-02-15 19:50:10,739 INFO L321 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2023-02-15 19:50:10,740 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2023-02-15 19:50:10,742 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-02-15 19:50:10,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 19:50:10,838 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 19:50:10,839 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 30 [2023-02-15 19:50:10,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 19:50:10,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 19:50:10,847 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 29 [2023-02-15 19:50:10,946 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2023-02-15 19:50:10,946 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 97 treesize of output 90 [2023-02-15 19:50:10,952 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 41 [2023-02-15 19:50:10,957 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 47 [2023-02-15 19:50:11,029 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 31 [2023-02-15 19:50:11,032 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 22 [2023-02-15 19:50:11,052 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-15 19:50:11,052 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 10 [2023-02-15 19:50:11,055 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 7 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 19:50:11,055 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 19:50:11,194 INFO L321 Elim1Store]: treesize reduction 26, result has 50.9 percent of original size [2023-02-15 19:50:11,194 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 1831 treesize of output 1526 [2023-02-15 19:50:11,346 WARN L837 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_528 (Array Int Int))) (= (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~i~0#1.base| v_ArrVal_528) |c_ULTIMATE.start_main_~l~0#1.base|) |c_ULTIMATE.start_main_~l~0#1.offset|) |c_ULTIMATE.start_main_~i~0#1.base|)) (forall ((v_ArrVal_529 (Array Int Int))) (= (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~i~0#1.base| v_ArrVal_529) |c_ULTIMATE.start_main_~l~0#1.base|) |c_ULTIMATE.start_main_~l~0#1.offset|) |c_ULTIMATE.start_main_~i~0#1.offset|))) is different from false [2023-02-15 19:50:11,558 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-15 19:50:11,559 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 24 treesize of output 35 [2023-02-15 19:50:11,561 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2023-02-15 19:50:11,562 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-02-15 19:50:11,584 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 7 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 5 not checked. [2023-02-15 19:50:11,584 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1224771179] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 19:50:11,584 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 19:50:11,584 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 25 [2023-02-15 19:50:11,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014332251] [2023-02-15 19:50:11,584 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 19:50:11,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-02-15 19:50:11,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 19:50:11,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-02-15 19:50:11,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=468, Unknown=1, NotChecked=44, Total=600 [2023-02-15 19:50:11,589 INFO L87 Difference]: Start difference. First operand 49 states and 64 transitions. Second operand has 25 states, 25 states have (on average 2.96) internal successors, (74), 25 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:50:16,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 19:50:16,392 INFO L93 Difference]: Finished difference Result 63 states and 79 transitions. [2023-02-15 19:50:16,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-02-15 19:50:16,392 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.96) internal successors, (74), 25 states have internal predecessors, (74), 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 31 [2023-02-15 19:50:16,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 19:50:16,393 INFO L225 Difference]: With dead ends: 63 [2023-02-15 19:50:16,393 INFO L226 Difference]: Without dead ends: 61 [2023-02-15 19:50:16,393 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 46 SyntacticMatches, 3 SemanticMatches, 36 ConstructedPredicates, 1 IntricatePredicates, 1 DeprecatedPredicates, 252 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=261, Invalid=1073, Unknown=2, NotChecked=70, Total=1406 [2023-02-15 19:50:16,394 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 102 mSDsluCounter, 318 mSDsCounter, 0 mSdLazyCounter, 315 mSolverCounterSat, 9 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 348 SdHoareTripleChecker+Invalid, 381 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 315 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 49 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-02-15 19:50:16,394 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 348 Invalid, 381 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 315 Invalid, 8 Unknown, 49 Unchecked, 0.4s Time] [2023-02-15 19:50:16,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2023-02-15 19:50:16,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 52. [2023-02-15 19:50:16,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 51 states have (on average 1.3137254901960784) internal successors, (67), 51 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:50:16,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 67 transitions. [2023-02-15 19:50:16,399 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 67 transitions. Word has length 31 [2023-02-15 19:50:16,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 19:50:16,399 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 67 transitions. [2023-02-15 19:50:16,399 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.96) internal successors, (74), 25 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:50:16,399 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 67 transitions. [2023-02-15 19:50:16,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-02-15 19:50:16,400 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 19:50:16,400 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 19:50:16,405 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-02-15 19:50:16,604 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 [2023-02-15 19:50:16,605 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 19:50:16,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 19:50:16,605 INFO L85 PathProgramCache]: Analyzing trace with hash -1832566487, now seen corresponding path program 4 times [2023-02-15 19:50:16,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 19:50:16,605 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999526327] [2023-02-15 19:50:16,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 19:50:16,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 19:50:16,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:50:17,265 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 10 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 19:50:17,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 19:50:17,266 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999526327] [2023-02-15 19:50:17,266 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [999526327] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 19:50:17,266 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [501364222] [2023-02-15 19:50:17,266 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-02-15 19:50:17,266 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 19:50:17,266 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 19:50:17,267 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 19:50:17,300 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-02-15 19:50:17,560 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-02-15 19:50:17,560 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 19:50:17,562 INFO L263 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 72 conjunts are in the unsatisfiable core [2023-02-15 19:50:17,565 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 19:50:17,580 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-02-15 19:50:17,582 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-02-15 19:50:17,587 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-02-15 19:50:17,610 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2023-02-15 19:50:17,613 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2023-02-15 19:50:17,616 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 19:50:17,616 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-02-15 19:50:17,621 INFO L321 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2023-02-15 19:50:17,622 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2023-02-15 19:50:17,626 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2023-02-15 19:50:17,703 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 53 [2023-02-15 19:50:17,708 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-02-15 19:50:17,708 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 53 treesize of output 54 [2023-02-15 19:50:17,754 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-02-15 19:50:17,754 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 69 treesize of output 36 [2023-02-15 19:50:17,756 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2023-02-15 19:50:17,760 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 10 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 19:50:17,760 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 19:50:17,930 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-15 19:50:17,931 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 49 [2023-02-15 19:50:17,937 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-15 19:50:17,937 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 40 [2023-02-15 19:50:17,944 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2023-02-15 19:50:17,948 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2023-02-15 19:50:18,039 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-15 19:50:18,039 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 19 [2023-02-15 19:50:18,041 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 19:50:18,043 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2023-02-15 19:50:18,048 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-15 19:50:18,048 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 23 [2023-02-15 19:50:18,051 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 10 [2023-02-15 19:50:18,053 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 19:50:18,054 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 8 [2023-02-15 19:50:18,062 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 10 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 19:50:18,062 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [501364222] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 19:50:18,062 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 19:50:18,062 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 13 [2023-02-15 19:50:18,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405292996] [2023-02-15 19:50:18,063 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 19:50:18,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-02-15 19:50:18,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 19:50:18,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-02-15 19:50:18,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2023-02-15 19:50:18,065 INFO L87 Difference]: Start difference. First operand 52 states and 67 transitions. Second operand has 13 states, 13 states have (on average 4.153846153846154) internal successors, (54), 13 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:50:18,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 19:50:18,429 INFO L93 Difference]: Finished difference Result 96 states and 124 transitions. [2023-02-15 19:50:18,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-02-15 19:50:18,429 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.153846153846154) internal successors, (54), 13 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2023-02-15 19:50:18,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 19:50:18,430 INFO L225 Difference]: With dead ends: 96 [2023-02-15 19:50:18,430 INFO L226 Difference]: Without dead ends: 56 [2023-02-15 19:50:18,431 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 57 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2023-02-15 19:50:18,431 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 67 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 173 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-02-15 19:50:18,432 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 173 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-02-15 19:50:18,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2023-02-15 19:50:18,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2023-02-15 19:50:18,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 55 states have (on average 1.309090909090909) internal successors, (72), 55 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:50:18,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 72 transitions. [2023-02-15 19:50:18,441 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 72 transitions. Word has length 32 [2023-02-15 19:50:18,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 19:50:18,441 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 72 transitions. [2023-02-15 19:50:18,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.153846153846154) internal successors, (54), 13 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:50:18,441 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 72 transitions. [2023-02-15 19:50:18,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-02-15 19:50:18,443 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 19:50:18,443 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 19:50:18,451 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-02-15 19:50:18,649 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 [2023-02-15 19:50:18,649 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 19:50:18,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 19:50:18,649 INFO L85 PathProgramCache]: Analyzing trace with hash 1909608239, now seen corresponding path program 5 times [2023-02-15 19:50:18,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 19:50:18,649 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539789361] [2023-02-15 19:50:18,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 19:50:18,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 19:50:18,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:50:19,544 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 15 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 19:50:19,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 19:50:19,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539789361] [2023-02-15 19:50:19,545 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [539789361] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 19:50:19,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [640151029] [2023-02-15 19:50:19,545 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-02-15 19:50:19,545 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 19:50:19,545 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 19:50:19,546 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) [2023-02-15 19:50:19,581 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-02-15 19:50:22,606 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2023-02-15 19:50:22,606 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 19:50:22,611 INFO L263 TraceCheckSpWp]: Trace formula consists of 349 conjuncts, 76 conjunts are in the unsatisfiable core [2023-02-15 19:50:22,615 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 19:50:22,621 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-02-15 19:50:22,632 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-02-15 19:50:22,640 INFO L321 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2023-02-15 19:50:22,640 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 16 treesize of output 18 [2023-02-15 19:50:22,678 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-02-15 19:50:22,683 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2023-02-15 19:50:22,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 19:50:22,686 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2023-02-15 19:50:22,694 INFO L321 Elim1Store]: treesize reduction 37, result has 24.5 percent of original size [2023-02-15 19:50:22,694 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 28 treesize of output 22 [2023-02-15 19:50:22,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 19:50:22,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 19:50:22,819 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-02-15 19:50:22,820 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 40 [2023-02-15 19:50:22,824 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 25 [2023-02-15 19:50:22,830 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-02-15 19:50:22,883 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-02-15 19:50:22,883 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 21 [2023-02-15 19:50:22,887 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 22 [2023-02-15 19:50:22,933 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 18 [2023-02-15 19:50:22,956 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-15 19:50:22,956 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 10 [2023-02-15 19:50:22,958 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 15 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 19:50:22,959 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 19:50:22,999 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_897 (Array Int Int))) (let ((.cse0 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~i~0#1.base| v_ArrVal_897) |c_ULTIMATE.start_main_~l~0#1.base|))) (< (select .cse0 (+ |c_ULTIMATE.start_main_~l~0#1.offset| 8)) (+ (select .cse0 (+ |c_ULTIMATE.start_main_~l~0#1.offset| 4)) 1)))) is different from false [2023-02-15 19:50:23,010 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_897 (Array Int Int)) (v_ArrVal_892 (Array Int Int))) (let ((.cse0 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~i~0#1.base| v_ArrVal_892) (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~i~0#1.base|) |c_ULTIMATE.start_main_~i~0#1.offset|) v_ArrVal_897) |c_ULTIMATE.start_main_~l~0#1.base|))) (< (select .cse0 (+ |c_ULTIMATE.start_main_~l~0#1.offset| 8)) (+ (select .cse0 (+ |c_ULTIMATE.start_main_~l~0#1.offset| 4)) 1)))) is different from false [2023-02-15 19:50:23,116 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-15 19:50:23,116 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 141 treesize of output 119 [2023-02-15 19:50:23,153 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-15 19:50:23,153 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 391 treesize of output 403 [2023-02-15 19:50:23,160 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 352 treesize of output 336 [2023-02-15 19:50:23,168 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 336 treesize of output 304 [2023-02-15 19:50:23,377 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-15 19:50:23,377 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 25 treesize of output 35 [2023-02-15 19:50:23,383 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2023-02-15 19:50:23,442 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-15 19:50:23,442 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 24 [2023-02-15 19:50:23,444 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 19:50:23,445 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2023-02-15 19:50:23,447 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 9 [2023-02-15 19:50:23,478 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 15 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 16 not checked. [2023-02-15 19:50:23,478 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [640151029] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 19:50:23,478 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 19:50:23,478 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 26 [2023-02-15 19:50:23,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057656404] [2023-02-15 19:50:23,479 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 19:50:23,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-02-15 19:50:23,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 19:50:23,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-02-15 19:50:23,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=463, Unknown=3, NotChecked=90, Total=650 [2023-02-15 19:50:23,481 INFO L87 Difference]: Start difference. First operand 56 states and 72 transitions. Second operand has 26 states, 26 states have (on average 3.1538461538461537) internal successors, (82), 26 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:50:24,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 19:50:24,254 INFO L93 Difference]: Finished difference Result 107 states and 134 transitions. [2023-02-15 19:50:24,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-02-15 19:50:24,254 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.1538461538461537) internal successors, (82), 26 states have internal predecessors, (82), 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 36 [2023-02-15 19:50:24,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 19:50:24,255 INFO L225 Difference]: With dead ends: 107 [2023-02-15 19:50:24,255 INFO L226 Difference]: Without dead ends: 99 [2023-02-15 19:50:24,255 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 58 SyntacticMatches, 4 SemanticMatches, 42 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 374 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=380, Invalid=1345, Unknown=5, NotChecked=162, Total=1892 [2023-02-15 19:50:24,256 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 268 mSDsluCounter, 241 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 22 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 268 SdHoareTripleChecker+Valid, 268 SdHoareTripleChecker+Invalid, 367 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 135 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-02-15 19:50:24,256 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [268 Valid, 268 Invalid, 367 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 203 Invalid, 7 Unknown, 135 Unchecked, 0.3s Time] [2023-02-15 19:50:24,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2023-02-15 19:50:24,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 63. [2023-02-15 19:50:24,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 62 states have (on average 1.3225806451612903) internal successors, (82), 62 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:50:24,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 82 transitions. [2023-02-15 19:50:24,266 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 82 transitions. Word has length 36 [2023-02-15 19:50:24,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 19:50:24,267 INFO L495 AbstractCegarLoop]: Abstraction has 63 states and 82 transitions. [2023-02-15 19:50:24,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.1538461538461537) internal successors, (82), 26 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:50:24,267 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 82 transitions. [2023-02-15 19:50:24,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-02-15 19:50:24,268 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 19:50:24,270 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 19:50:24,291 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-02-15 19:50:24,478 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 [2023-02-15 19:50:24,478 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 19:50:24,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 19:50:24,479 INFO L85 PathProgramCache]: Analyzing trace with hash 368002532, now seen corresponding path program 3 times [2023-02-15 19:50:24,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 19:50:24,479 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571505057] [2023-02-15 19:50:24,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 19:50:24,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 19:50:24,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:50:24,973 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 11 proven. 18 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-02-15 19:50:24,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 19:50:24,973 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571505057] [2023-02-15 19:50:24,974 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [571505057] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 19:50:24,974 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1970403802] [2023-02-15 19:50:24,974 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-15 19:50:24,974 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 19:50:24,974 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 19:50:24,975 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) [2023-02-15 19:50:25,017 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-02-15 19:50:25,137 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-02-15 19:50:25,137 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 19:50:25,139 INFO L263 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 66 conjunts are in the unsatisfiable core [2023-02-15 19:50:25,141 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 19:50:25,145 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-02-15 19:50:25,166 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-02-15 19:50:25,171 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-02-15 19:50:25,176 INFO L321 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2023-02-15 19:50:25,177 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2023-02-15 19:50:25,247 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 19:50:25,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 19:50:25,248 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 29 [2023-02-15 19:50:25,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 19:50:25,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 19:50:25,255 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 30 [2023-02-15 19:50:25,304 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2023-02-15 19:50:25,305 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 59 treesize of output 56 [2023-02-15 19:50:25,308 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 46 [2023-02-15 19:50:25,465 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-02-15 19:50:25,465 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 69 treesize of output 36 [2023-02-15 19:50:25,468 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2023-02-15 19:50:25,483 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 16 proven. 16 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-15 19:50:25,484 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 19:50:25,751 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse6 (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~i~0#1.base|)) (.cse2 (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~i~0#1.base|))) (let ((.cse3 (+ |c_ULTIMATE.start_main_~i~0#1.offset| 8)) (.cse4 (+ |c_ULTIMATE.start_main_~i~0#1.offset| 4)) (.cse5 (select .cse2 |c_ULTIMATE.start_main_~i~0#1.offset|)) (.cse0 (select .cse6 |c_ULTIMATE.start_main_~i~0#1.offset|))) (and (forall ((v_ArrVal_1055 Int) (v_ArrVal_1056 Int) (v_ArrVal_1058 Int) (v_ArrVal_1065 (Array Int Int)) (v_ArrVal_1060 Int)) (or (not (= 0 (select v_ArrVal_1065 .cse0))) (forall ((v_ArrVal_1066 (Array Int Int))) (or (= (select (let ((.cse1 (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~i~0#1.base| (store (store .cse2 .cse3 v_ArrVal_1055) .cse4 v_ArrVal_1060)) .cse5 v_ArrVal_1066))) (select .cse1 (select (select .cse1 |c_ULTIMATE.start_main_~l~0#1.base|) |c_ULTIMATE.start_main_~l~0#1.offset|))) (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~i~0#1.base| (store (store .cse6 .cse3 v_ArrVal_1056) .cse4 v_ArrVal_1058)) .cse5 v_ArrVal_1065) |c_ULTIMATE.start_main_~l~0#1.base|) |c_ULTIMATE.start_main_~l~0#1.offset|)) 0) (not (= (select v_ArrVal_1066 .cse0) 0)))))) (forall ((v_ArrVal_1055 Int) (v_ArrVal_1056 Int) (v_ArrVal_1058 Int) (v_ArrVal_1065 (Array Int Int)) (v_ArrVal_1060 Int)) (or (forall ((v_ArrVal_1066 (Array Int Int))) (or (= (let ((.cse7 (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~i~0#1.base| (store (store .cse6 .cse3 v_ArrVal_1056) .cse4 v_ArrVal_1058)) .cse5 v_ArrVal_1065))) (select (select .cse7 (select (select (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~i~0#1.base| (store (store .cse2 .cse3 v_ArrVal_1055) .cse4 v_ArrVal_1060)) .cse5 v_ArrVal_1066) |c_ULTIMATE.start_main_~l~0#1.base|) |c_ULTIMATE.start_main_~l~0#1.offset|)) (select (select .cse7 |c_ULTIMATE.start_main_~l~0#1.base|) |c_ULTIMATE.start_main_~l~0#1.offset|))) 0) (not (= (select v_ArrVal_1066 .cse0) 0)))) (not (= 0 (select v_ArrVal_1065 .cse0)))))))) is different from false [2023-02-15 19:50:28,584 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-15 19:50:28,585 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 6 case distinctions, treesize of input 159 treesize of output 175 [2023-02-15 19:50:28,662 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-15 19:50:28,662 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 6 case distinctions, treesize of input 117 treesize of output 133 [2023-02-15 19:50:28,678 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 118 treesize of output 105 [2023-02-15 19:50:28,775 INFO L321 Elim1Store]: treesize reduction 23, result has 53.1 percent of original size [2023-02-15 19:50:28,775 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 186 treesize of output 175 [2023-02-15 19:50:28,861 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-15 19:50:28,862 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 134 treesize of output 155 [2023-02-15 19:50:28,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 19:50:28,987 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-15 19:50:28,987 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 342 treesize of output 352 [2023-02-15 19:50:29,042 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-15 19:50:29,043 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 298 treesize of output 298 [2023-02-15 19:50:29,081 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-15 19:50:29,082 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 265 treesize of output 243 [2023-02-15 19:50:29,159 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-15 19:50:29,159 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 234 treesize of output 234 [2023-02-15 19:50:29,251 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-15 19:50:29,251 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 230 treesize of output 242 [2023-02-15 19:50:31,219 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2023-02-15 19:50:31,414 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 16 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 6 not checked. [2023-02-15 19:50:31,414 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1970403802] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 19:50:31,414 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 19:50:31,414 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 11, 11] total 25 [2023-02-15 19:50:31,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036412900] [2023-02-15 19:50:31,414 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 19:50:31,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-02-15 19:50:31,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 19:50:31,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-02-15 19:50:31,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=469, Unknown=18, NotChecked=44, Total=600 [2023-02-15 19:50:31,415 INFO L87 Difference]: Start difference. First operand 63 states and 82 transitions. Second operand has 25 states, 25 states have (on average 3.52) internal successors, (88), 25 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:50:34,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 19:50:34,005 INFO L93 Difference]: Finished difference Result 77 states and 95 transitions. [2023-02-15 19:50:34,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-02-15 19:50:34,006 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.52) internal successors, (88), 25 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2023-02-15 19:50:34,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 19:50:34,006 INFO L225 Difference]: With dead ends: 77 [2023-02-15 19:50:34,006 INFO L226 Difference]: Without dead ends: 66 [2023-02-15 19:50:34,007 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 62 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=207, Invalid=1039, Unknown=18, NotChecked=68, Total=1332 [2023-02-15 19:50:34,007 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 161 mSDsluCounter, 452 mSDsCounter, 0 mSdLazyCounter, 294 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 488 SdHoareTripleChecker+Invalid, 349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 294 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 44 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-02-15 19:50:34,008 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [161 Valid, 488 Invalid, 349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 294 Invalid, 0 Unknown, 44 Unchecked, 1.1s Time] [2023-02-15 19:50:34,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2023-02-15 19:50:34,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 58. [2023-02-15 19:50:34,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 57 states have (on average 1.3333333333333333) internal successors, (76), 57 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:50:34,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 76 transitions. [2023-02-15 19:50:34,014 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 76 transitions. Word has length 38 [2023-02-15 19:50:34,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 19:50:34,014 INFO L495 AbstractCegarLoop]: Abstraction has 58 states and 76 transitions. [2023-02-15 19:50:34,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.52) internal successors, (88), 25 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:50:34,014 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 76 transitions. [2023-02-15 19:50:34,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-02-15 19:50:34,015 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 19:50:34,015 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 19:50:34,022 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-02-15 19:50:34,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-02-15 19:50:34,215 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 19:50:34,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 19:50:34,216 INFO L85 PathProgramCache]: Analyzing trace with hash -1993858009, now seen corresponding path program 4 times [2023-02-15 19:50:34,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 19:50:34,216 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192075733] [2023-02-15 19:50:34,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 19:50:34,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 19:50:34,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:50:36,244 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 15 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 19:50:36,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 19:50:36,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192075733] [2023-02-15 19:50:36,245 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [192075733] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 19:50:36,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [549344319] [2023-02-15 19:50:36,245 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-02-15 19:50:36,245 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 19:50:36,245 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 19:50:36,250 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 19:50:36,250 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-02-15 19:50:36,452 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-02-15 19:50:36,452 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 19:50:36,454 INFO L263 TraceCheckSpWp]: Trace formula consists of 359 conjuncts, 85 conjunts are in the unsatisfiable core [2023-02-15 19:50:36,460 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 19:50:36,474 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-02-15 19:50:36,561 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-02-15 19:50:36,624 INFO L321 Elim1Store]: treesize reduction 30, result has 37.5 percent of original size [2023-02-15 19:50:36,624 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 29 [2023-02-15 19:50:36,816 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2023-02-15 19:50:36,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 19:50:36,826 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 28 [2023-02-15 19:50:36,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 19:50:36,866 INFO L321 Elim1Store]: treesize reduction 4, result has 75.0 percent of original size [2023-02-15 19:50:36,866 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 22 [2023-02-15 19:50:36,878 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-02-15 19:50:37,238 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 57 [2023-02-15 19:50:37,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 19:50:37,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 19:50:37,255 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 19:50:37,257 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-02-15 19:50:37,257 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 55 treesize of output 48 [2023-02-15 19:50:37,683 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-02-15 19:50:37,684 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 116 treesize of output 81 [2023-02-15 19:50:37,704 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 29 [2023-02-15 19:50:37,721 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 19:50:37,730 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2023-02-15 19:50:38,064 INFO L321 Elim1Store]: treesize reduction 36, result has 23.4 percent of original size [2023-02-15 19:50:38,065 INFO L350 Elim1Store]: Elim1 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 4 new quantified variables, introduced 3 case distinctions, treesize of input 90 treesize of output 71 [2023-02-15 19:50:38,075 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 30 [2023-02-15 19:50:38,109 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 24 [2023-02-15 19:50:38,559 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 19:50:38,560 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-02-15 19:50:38,581 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 19:50:38,625 INFO L321 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2023-02-15 19:50:38,625 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 55 treesize of output 33 [2023-02-15 19:50:38,696 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-15 19:50:38,697 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 10 [2023-02-15 19:50:38,704 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 15 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 19:50:38,704 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 19:50:39,293 WARN L837 $PredicateComparison]: unable to prove that (or |c_ULTIMATE.start_main_#t~short8#1| (forall ((v_ArrVal_1262 Int) (v_ArrVal_1264 Int) (v_ArrVal_1269 (Array Int Int)) (v_ArrVal_1266 Int) (v_ArrVal_1268 (Array Int Int)) (v_ArrVal_1267 Int) (v_ArrVal_1261 (Array Int Int)) (v_ArrVal_1271 (Array Int Int))) (let ((.cse3 (select |c_#memory_int| |c_ULTIMATE.start_main_~i~0#1.base|)) (.cse5 (+ |c_ULTIMATE.start_main_~i~0#1.offset| 4))) (or (let ((.cse6 (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~i~0#1.base|))) (let ((.cse2 (select .cse6 |c_ULTIMATE.start_main_~i~0#1.offset|))) (let ((.cse0 (let ((.cse4 (+ |c_ULTIMATE.start_main_~i~0#1.offset| 8))) (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~i~0#1.base| (store (store .cse3 .cse4 v_ArrVal_1264) .cse5 v_ArrVal_1262)) .cse2 v_ArrVal_1271) (select (select (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~i~0#1.base| (store (store .cse6 .cse4 v_ArrVal_1267) .cse5 v_ArrVal_1266)) .cse2 v_ArrVal_1268) |c_ULTIMATE.start_main_~l~0#1.base|) |c_ULTIMATE.start_main_~l~0#1.offset|)))) (.cse1 (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~i~0#1.base| v_ArrVal_1261) .cse2 v_ArrVal_1269) |c_ULTIMATE.start_main_~l~0#1.base|) |c_ULTIMATE.start_main_~l~0#1.offset|))) (< (select .cse0 (+ .cse1 8)) (+ (select .cse0 (+ .cse1 4)) 1))))) (not (<= v_ArrVal_1264 |c_ULTIMATE.start_main_~order~0#1|)) (not (<= (select .cse3 .cse5) v_ArrVal_1262)))))) is different from false [2023-02-15 19:50:39,343 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-15 19:50:39,343 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 161 treesize of output 139 [2023-02-15 19:50:39,473 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-15 19:50:39,473 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 223 treesize of output 327 [2023-02-15 19:50:39,485 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 39 [2023-02-15 19:50:44,118 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-15 19:50:44,118 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 126 treesize of output 137 [2023-02-15 19:50:44,175 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-15 19:50:44,175 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 6 case distinctions, treesize of input 112 treesize of output 138 [2023-02-15 19:50:44,194 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 212 treesize of output 200 [2023-02-15 19:50:44,204 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 179 treesize of output 175 [2023-02-15 19:50:44,214 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 175 treesize of output 167 [2023-02-15 19:50:44,363 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2023-02-15 19:50:44,409 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 41 treesize of output 4 [2023-02-15 19:50:44,785 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-15 19:50:44,785 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 98 treesize of output 61 [2023-02-15 19:50:44,790 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 19:50:44,794 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 27 [2023-02-15 19:50:44,802 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 20 [2023-02-15 19:50:44,809 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 34 [2023-02-15 19:50:45,128 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 15 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2023-02-15 19:50:45,128 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [549344319] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 19:50:45,128 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 19:50:45,128 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 29 [2023-02-15 19:50:45,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857197688] [2023-02-15 19:50:45,128 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 19:50:45,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-02-15 19:50:45,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 19:50:45,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-02-15 19:50:45,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=633, Unknown=27, NotChecked=52, Total=812 [2023-02-15 19:50:45,130 INFO L87 Difference]: Start difference. First operand 58 states and 76 transitions. Second operand has 29 states, 29 states have (on average 3.1724137931034484) internal successors, (92), 29 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:50:48,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 19:50:48,950 INFO L93 Difference]: Finished difference Result 74 states and 92 transitions. [2023-02-15 19:50:48,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-02-15 19:50:48,950 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 3.1724137931034484) internal successors, (92), 29 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2023-02-15 19:50:48,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 19:50:48,951 INFO L225 Difference]: With dead ends: 74 [2023-02-15 19:50:48,951 INFO L226 Difference]: Without dead ends: 72 [2023-02-15 19:50:48,951 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 58 SyntacticMatches, 6 SemanticMatches, 36 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 287 ImplicationChecksByTransitivity, 7.8s TimeCoverageRelationStatistics Valid=247, Invalid=1062, Unknown=27, NotChecked=70, Total=1406 [2023-02-15 19:50:48,953 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 219 mSDsluCounter, 426 mSDsCounter, 0 mSdLazyCounter, 314 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 461 SdHoareTripleChecker+Invalid, 381 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 314 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 54 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-02-15 19:50:48,953 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [219 Valid, 461 Invalid, 381 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 314 Invalid, 0 Unknown, 54 Unchecked, 2.2s Time] [2023-02-15 19:50:48,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2023-02-15 19:50:48,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 61. [2023-02-15 19:50:48,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 60 states have (on average 1.3166666666666667) internal successors, (79), 60 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) [2023-02-15 19:50:48,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 79 transitions. [2023-02-15 19:50:48,968 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 79 transitions. Word has length 39 [2023-02-15 19:50:48,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 19:50:48,968 INFO L495 AbstractCegarLoop]: Abstraction has 61 states and 79 transitions. [2023-02-15 19:50:48,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 3.1724137931034484) internal successors, (92), 29 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:50:48,969 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 79 transitions. [2023-02-15 19:50:48,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-02-15 19:50:48,969 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 19:50:48,970 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 19:50:48,975 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-02-15 19:50:49,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-02-15 19:50:49,175 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 19:50:49,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 19:50:49,176 INFO L85 PathProgramCache]: Analyzing trace with hash -964121542, now seen corresponding path program 6 times [2023-02-15 19:50:49,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 19:50:49,176 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695982203] [2023-02-15 19:50:49,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 19:50:49,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 19:50:49,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:50:50,791 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 14 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 19:50:50,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 19:50:50,791 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695982203] [2023-02-15 19:50:50,791 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1695982203] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 19:50:50,791 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [747422837] [2023-02-15 19:50:50,791 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-02-15 19:50:50,791 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 19:50:50,791 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 19:50:50,792 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 19:50:50,795 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-02-15 19:50:51,616 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2023-02-15 19:50:51,616 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 19:50:51,620 INFO L263 TraceCheckSpWp]: Trace formula consists of 387 conjuncts, 107 conjunts are in the unsatisfiable core [2023-02-15 19:50:51,625 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 19:50:51,679 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-02-15 19:50:51,696 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-02-15 19:50:51,709 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-02-15 19:50:51,889 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2023-02-15 19:50:51,898 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2023-02-15 19:50:51,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 19:50:51,909 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-02-15 19:50:51,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 19:50:51,921 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-02-15 19:50:52,006 INFO L321 Elim1Store]: treesize reduction 30, result has 37.5 percent of original size [2023-02-15 19:50:52,006 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 29 [2023-02-15 19:50:52,294 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2023-02-15 19:50:52,303 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2023-02-15 19:50:52,314 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 19:50:52,317 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 19:50:52,318 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 34 [2023-02-15 19:50:52,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 19:50:52,361 INFO L321 Elim1Store]: treesize reduction 25, result has 16.7 percent of original size [2023-02-15 19:50:52,361 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 56 treesize of output 52 [2023-02-15 19:50:52,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 19:50:52,413 INFO L321 Elim1Store]: treesize reduction 4, result has 75.0 percent of original size [2023-02-15 19:50:52,413 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 22 [2023-02-15 19:50:53,051 INFO L321 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2023-02-15 19:50:53,051 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 84 treesize of output 67 [2023-02-15 19:50:53,076 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 19:50:53,077 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 57 [2023-02-15 19:50:53,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 19:50:53,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 19:50:53,407 INFO L321 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2023-02-15 19:50:53,407 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 168 treesize of output 127 [2023-02-15 19:50:53,419 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 19:50:53,489 INFO L321 Elim1Store]: treesize reduction 62, result has 27.1 percent of original size [2023-02-15 19:50:53,489 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 98 treesize of output 97 [2023-02-15 19:50:53,906 INFO L321 Elim1Store]: treesize reduction 85, result has 11.5 percent of original size [2023-02-15 19:50:53,907 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 9 new quantified variables, introduced 10 case distinctions, treesize of input 132 treesize of output 74 [2023-02-15 19:50:53,958 INFO L321 Elim1Store]: treesize reduction 10, result has 41.2 percent of original size [2023-02-15 19:50:53,958 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 2 case distinctions, treesize of input 37 treesize of output 25 [2023-02-15 19:50:53,974 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 14 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 19:50:53,974 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 19:50:57,703 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-15 19:50:57,703 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 6 case distinctions, treesize of input 157 treesize of output 192 [2023-02-15 19:50:57,820 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-15 19:50:57,820 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 6 case distinctions, treesize of input 121 treesize of output 156 [2023-02-15 19:50:57,939 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 41 treesize of output 4 [2023-02-15 19:50:58,047 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 41 treesize of output 4 [2023-02-15 19:50:58,612 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-15 19:50:58,613 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 169 treesize of output 164 [2023-02-15 19:50:58,631 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-15 19:50:58,631 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 157 treesize of output 152 [2023-02-15 19:50:59,581 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-15 19:50:59,581 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 114 treesize of output 89 [2023-02-15 19:50:59,586 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 19:50:59,641 INFO L321 Elim1Store]: treesize reduction 32, result has 11.1 percent of original size [2023-02-15 19:50:59,641 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 9960 treesize of output 9446 [2023-02-15 19:50:59,687 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-15 19:50:59,688 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 9438 treesize of output 6400 [2023-02-15 19:50:59,706 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 19:50:59,711 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3352 treesize of output 3346 [2023-02-15 19:50:59,756 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-02-15 19:50:59,756 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 6228 treesize of output 5082 [2023-02-15 19:50:59,807 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 774 treesize of output 612 [2023-02-15 19:50:59,818 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 314 treesize of output 262 [2023-02-15 19:50:59,828 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 162 treesize of output 148 [2023-02-15 19:50:59,834 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 19:50:59,835 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 19:50:59,853 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-02-15 19:50:59,853 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 12 [2023-02-15 19:50:59,880 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-15 19:50:59,880 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 114 treesize of output 89 [2023-02-15 19:50:59,894 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-15 19:50:59,894 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 78 treesize of output 77 [2023-02-15 19:50:59,898 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 19:50:59,899 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 19:50:59,899 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 19:50:59,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 19:50:59,906 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 8 [2023-02-15 19:50:59,921 INFO L321 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2023-02-15 19:50:59,921 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 26 [2023-02-15 19:50:59,927 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 4 [2023-02-15 19:50:59,969 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 14 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 19:50:59,970 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [747422837] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 19:50:59,970 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 19:50:59,970 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 21 [2023-02-15 19:50:59,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007690918] [2023-02-15 19:50:59,970 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 19:50:59,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-02-15 19:50:59,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 19:50:59,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-02-15 19:50:59,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=364, Unknown=1, NotChecked=0, Total=420 [2023-02-15 19:50:59,971 INFO L87 Difference]: Start difference. First operand 61 states and 79 transitions. Second operand has 21 states, 21 states have (on average 4.095238095238095) internal successors, (86), 21 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:51:02,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 19:51:02,370 INFO L93 Difference]: Finished difference Result 115 states and 148 transitions. [2023-02-15 19:51:02,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-02-15 19:51:02,371 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 4.095238095238095) internal successors, (86), 21 states have internal predecessors, (86), 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 40 [2023-02-15 19:51:02,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 19:51:02,371 INFO L225 Difference]: With dead ends: 115 [2023-02-15 19:51:02,371 INFO L226 Difference]: Without dead ends: 94 [2023-02-15 19:51:02,372 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=84, Invalid=515, Unknown=1, NotChecked=0, Total=600 [2023-02-15 19:51:02,372 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 99 mSDsluCounter, 310 mSDsCounter, 0 mSdLazyCounter, 220 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 344 SdHoareTripleChecker+Invalid, 235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-02-15 19:51:02,372 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 344 Invalid, 235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 220 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-02-15 19:51:02,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2023-02-15 19:51:02,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 90. [2023-02-15 19:51:02,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 89 states have (on average 1.303370786516854) internal successors, (116), 89 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:51:02,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 116 transitions. [2023-02-15 19:51:02,385 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 116 transitions. Word has length 40 [2023-02-15 19:51:02,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 19:51:02,385 INFO L495 AbstractCegarLoop]: Abstraction has 90 states and 116 transitions. [2023-02-15 19:51:02,385 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 4.095238095238095) internal successors, (86), 21 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 19:51:02,385 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 116 transitions. [2023-02-15 19:51:02,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-02-15 19:51:02,386 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 19:51:02,386 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 19:51:02,393 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-02-15 19:51:02,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-02-15 19:51:02,594 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 19:51:02,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 19:51:02,594 INFO L85 PathProgramCache]: Analyzing trace with hash 377654319, now seen corresponding path program 5 times [2023-02-15 19:51:02,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 19:51:02,594 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920939223] [2023-02-15 19:51:02,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 19:51:02,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 19:51:02,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 19:51:05,635 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 15 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 19:51:05,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 19:51:05,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920939223] [2023-02-15 19:51:05,636 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1920939223] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 19:51:05,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [600588792] [2023-02-15 19:51:05,636 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-02-15 19:51:05,636 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 19:51:05,637 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 19:51:05,653 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 19:51:05,655 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-02-15 19:51:09,169 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2023-02-15 19:51:09,169 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 19:51:09,175 INFO L263 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 106 conjunts are in the unsatisfiable core [2023-02-15 19:51:09,179 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 19:51:09,316 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-02-15 19:51:09,382 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-02-15 19:51:09,447 INFO L321 Elim1Store]: treesize reduction 30, result has 37.5 percent of original size [2023-02-15 19:51:09,447 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 29 [2023-02-15 19:51:09,479 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-02-15 19:51:09,605 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2023-02-15 19:51:09,614 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2023-02-15 19:51:09,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 19:51:09,627 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 28 [2023-02-15 19:51:09,639 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 19:51:09,639 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2023-02-15 19:51:09,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 19:51:09,690 INFO L321 Elim1Store]: treesize reduction 4, result has 75.0 percent of original size [2023-02-15 19:51:09,690 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 22 [2023-02-15 19:51:10,130 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 19:51:10,131 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 43 [2023-02-15 19:51:10,144 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 19:51:10,148 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 19:51:10,149 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 19:51:10,151 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-02-15 19:51:10,151 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 58 treesize of output 51 [2023-02-15 19:51:10,417 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 19:51:10,420 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 19:51:10,423 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-02-15 19:51:10,423 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 150 treesize of output 115 [2023-02-15 19:51:10,543 INFO L321 Elim1Store]: treesize reduction 152, result has 16.5 percent of original size [2023-02-15 19:51:10,544 INFO L350 Elim1Store]: Elim1 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 5 new quantified variables, introduced 4 case distinctions, treesize of input 123 treesize of output 110 [2023-02-15 19:51:11,164 INFO L321 Elim1Store]: treesize reduction 36, result has 23.4 percent of original size [2023-02-15 19:51:11,164 INFO L350 Elim1Store]: Elim1 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 4 new quantified variables, introduced 3 case distinctions, treesize of input 220 treesize of output 177 [2023-02-15 19:51:11,235 INFO L321 Elim1Store]: treesize reduction 52, result has 22.4 percent of original size [2023-02-15 19:51:11,235 INFO L350 Elim1Store]: Elim1 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 3 new quantified variables, introduced 3 case distinctions, treesize of input 209 treesize of output 169 [2023-02-15 19:51:11,250 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 133 treesize of output 73 [2023-02-15 19:51:12,126 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 19:51:12,127 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 19:51:12,171 INFO L321 Elim1Store]: treesize reduction 25, result has 24.2 percent of original size [2023-02-15 19:51:12,172 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 145 treesize of output 78 [2023-02-15 19:51:12,183 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 19:51:12,199 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2023-02-15 19:51:12,199 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 1 case distinctions, treesize of input 61 treesize of output 34 [2023-02-15 19:51:12,290 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-15 19:51:12,290 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 10 [2023-02-15 19:51:12,297 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 4 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 19:51:12,297 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 19:51:13,242 INFO L321 Elim1Store]: treesize reduction 54, result has 50.5 percent of original size [2023-02-15 19:51:13,243 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 2022 treesize of output 1681 [2023-02-15 19:51:13,495 WARN L837 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_1724 (Array Int Int)) (v_ArrVal_1722 (Array Int Int))) (= (let ((.cse0 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~i~0#1.base| v_ArrVal_1724))) (select (select .cse0 (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~i~0#1.base| v_ArrVal_1722) |c_ULTIMATE.start_main_~l~0#1.base|) |c_ULTIMATE.start_main_~l~0#1.offset|)) (select (select .cse0 |c_ULTIMATE.start_main_~l~0#1.base|) |c_ULTIMATE.start_main_~l~0#1.offset|))) |c_ULTIMATE.start_main_~i~0#1.offset|)) (forall ((v_ArrVal_1724 (Array Int Int)) (v_ArrVal_1722 (Array Int Int))) (= (select (let ((.cse1 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~i~0#1.base| v_ArrVal_1722))) (select .cse1 (select (select .cse1 |c_ULTIMATE.start_main_~l~0#1.base|) |c_ULTIMATE.start_main_~l~0#1.offset|))) (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~i~0#1.base| v_ArrVal_1724) |c_ULTIMATE.start_main_~l~0#1.base|) |c_ULTIMATE.start_main_~l~0#1.offset|)) |c_ULTIMATE.start_main_~i~0#1.base|))) is different from false [2023-02-15 19:51:13,555 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse1 (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~i~0#1.base|))) (let ((.cse2 (+ |c_ULTIMATE.start_main_~i~0#1.offset| 8)) (.cse3 (+ |c_ULTIMATE.start_main_~i~0#1.offset| 4)) (.cse4 (select .cse1 |c_ULTIMATE.start_main_~i~0#1.offset|)) (.cse5 (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~i~0#1.base|))) (and (forall ((v_ArrVal_1715 Int) (v_ArrVal_1724 (Array Int Int)) (v_ArrVal_1718 Int) (v_ArrVal_1717 Int) (v_ArrVal_1722 (Array Int Int)) (v_ArrVal_1719 Int)) (= (select (let ((.cse0 (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~i~0#1.base| (store (store .cse1 .cse2 v_ArrVal_1717) .cse3 v_ArrVal_1715)) .cse4 v_ArrVal_1722))) (select .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~l~0#1.base|) |c_ULTIMATE.start_main_~l~0#1.offset|))) (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~i~0#1.base| (store (store .cse5 .cse2 v_ArrVal_1719) .cse3 v_ArrVal_1718)) .cse4 v_ArrVal_1724) |c_ULTIMATE.start_main_~l~0#1.base|) |c_ULTIMATE.start_main_~l~0#1.offset|)) .cse4)) (forall ((v_ArrVal_1715 Int) (v_ArrVal_1724 (Array Int Int)) (v_ArrVal_1718 Int) (v_ArrVal_1717 Int) (v_ArrVal_1722 (Array Int Int)) (v_ArrVal_1719 Int)) (= (let ((.cse6 (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~i~0#1.base| (store (store .cse5 .cse2 v_ArrVal_1719) .cse3 v_ArrVal_1718)) .cse4 v_ArrVal_1724))) (select (select .cse6 (select (select (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~i~0#1.base| (store (store .cse1 .cse2 v_ArrVal_1717) .cse3 v_ArrVal_1715)) .cse4 v_ArrVal_1722) |c_ULTIMATE.start_main_~l~0#1.base|) |c_ULTIMATE.start_main_~l~0#1.offset|)) (select (select .cse6 |c_ULTIMATE.start_main_~l~0#1.base|) |c_ULTIMATE.start_main_~l~0#1.offset|))) (select .cse5 |c_ULTIMATE.start_main_~i~0#1.offset|)))))) is different from false [2023-02-15 19:51:13,665 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse8 (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~i~0#1.base|))) (let ((.cse12 (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~i~0#1.base|)) (.cse11 (select .cse8 |c_ULTIMATE.start_main_~i~0#1.offset|))) (let ((.cse4 (+ .cse11 8)) (.cse5 (+ .cse11 4)) (.cse2 (select .cse12 |c_ULTIMATE.start_main_~i~0#1.offset|)) (.cse9 (+ |c_ULTIMATE.start_main_~i~0#1.offset| 8)) (.cse10 (+ |c_ULTIMATE.start_main_~i~0#1.offset| 4))) (and (forall ((v_ArrVal_1715 Int) (v_ArrVal_1724 (Array Int Int)) (v_ArrVal_1707 Int) (v_ArrVal_1718 Int) (v_ArrVal_1717 Int) (v_ArrVal_1722 (Array Int Int)) (v_ArrVal_1709 Int) (v_ArrVal_1719 Int) (v_ArrVal_1710 Int) (v_ArrVal_1711 Int)) (let ((.cse1 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~i~0#1.base| (store (store .cse12 .cse9 v_ArrVal_1707) .cse10 v_ArrVal_1709)))) (let ((.cse3 (select .cse1 .cse2))) (let ((.cse6 (select .cse3 .cse11))) (= (select (let ((.cse0 (store (store .cse1 .cse2 (store (store .cse3 .cse4 v_ArrVal_1717) .cse5 v_ArrVal_1715)) .cse6 v_ArrVal_1722))) (select .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~l~0#1.base|) |c_ULTIMATE.start_main_~l~0#1.offset|))) (select (select (store (let ((.cse7 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~i~0#1.base| (store (store .cse8 .cse9 v_ArrVal_1711) .cse10 v_ArrVal_1710)))) (store .cse7 .cse2 (store (store (select .cse7 .cse2) .cse4 v_ArrVal_1719) .cse5 v_ArrVal_1718))) .cse6 v_ArrVal_1724) |c_ULTIMATE.start_main_~l~0#1.base|) |c_ULTIMATE.start_main_~l~0#1.offset|)) .cse6))))) (forall ((v_ArrVal_1715 Int) (v_ArrVal_1724 (Array Int Int)) (v_ArrVal_1707 Int) (v_ArrVal_1718 Int) (v_ArrVal_1717 Int) (v_ArrVal_1722 (Array Int Int)) (v_ArrVal_1709 Int) (v_ArrVal_1719 Int) (v_ArrVal_1710 Int) (v_ArrVal_1711 Int)) (let ((.cse17 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~i~0#1.base| (store (store .cse8 .cse9 v_ArrVal_1711) .cse10 v_ArrVal_1710)))) (let ((.cse18 (select .cse17 .cse2))) (= (let ((.cse14 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~i~0#1.base| (store (store .cse12 .cse9 v_ArrVal_1707) .cse10 v_ArrVal_1709)))) (let ((.cse15 (select .cse14 .cse2))) (let ((.cse16 (select .cse15 .cse11))) (let ((.cse13 (store (store .cse17 .cse2 (store (store .cse18 .cse4 v_ArrVal_1719) .cse5 v_ArrVal_1718)) .cse16 v_ArrVal_1724))) (select (select .cse13 (select (select (store (store .cse14 .cse2 (store (store .cse15 .cse4 v_ArrVal_1717) .cse5 v_ArrVal_1715)) .cse16 v_ArrVal_1722) |c_ULTIMATE.start_main_~l~0#1.base|) |c_ULTIMATE.start_main_~l~0#1.offset|)) (select (select .cse13 |c_ULTIMATE.start_main_~l~0#1.base|) |c_ULTIMATE.start_main_~l~0#1.offset|)))))) (select .cse18 .cse11))))))))) is different from false [2023-02-15 19:51:13,838 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse8 (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~l~0#1.base|))) (let ((.cse12 (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~l~0#1.base|)) (.cse11 (select .cse8 |c_ULTIMATE.start_main_~l~0#1.offset|))) (let ((.cse4 (+ .cse11 8)) (.cse5 (+ .cse11 4)) (.cse2 (select .cse12 |c_ULTIMATE.start_main_~l~0#1.offset|)) (.cse9 (+ |c_ULTIMATE.start_main_~l~0#1.offset| 8)) (.cse10 (+ |c_ULTIMATE.start_main_~l~0#1.offset| 4))) (and (forall ((v_ArrVal_1715 Int) (v_ArrVal_1724 (Array Int Int)) (v_ArrVal_1707 Int) (v_ArrVal_1718 Int) (v_ArrVal_1717 Int) (v_ArrVal_1722 (Array Int Int)) (v_ArrVal_1709 Int) (v_ArrVal_1719 Int) (v_ArrVal_1710 Int) (v_ArrVal_1711 Int)) (let ((.cse1 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~l~0#1.base| (store (store .cse12 .cse9 v_ArrVal_1707) .cse10 v_ArrVal_1709)))) (let ((.cse3 (select .cse1 .cse2))) (let ((.cse6 (select .cse3 .cse11))) (= (select (let ((.cse0 (store (store .cse1 .cse2 (store (store .cse3 .cse4 v_ArrVal_1717) .cse5 v_ArrVal_1715)) .cse6 v_ArrVal_1722))) (select .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~l~0#1.base|) |c_ULTIMATE.start_main_~l~0#1.offset|))) (select (select (store (let ((.cse7 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~l~0#1.base| (store (store .cse8 .cse9 v_ArrVal_1711) .cse10 v_ArrVal_1710)))) (store .cse7 .cse2 (store (store (select .cse7 .cse2) .cse4 v_ArrVal_1719) .cse5 v_ArrVal_1718))) .cse6 v_ArrVal_1724) |c_ULTIMATE.start_main_~l~0#1.base|) |c_ULTIMATE.start_main_~l~0#1.offset|)) .cse6))))) (forall ((v_ArrVal_1715 Int) (v_ArrVal_1724 (Array Int Int)) (v_ArrVal_1707 Int) (v_ArrVal_1718 Int) (v_ArrVal_1717 Int) (v_ArrVal_1722 (Array Int Int)) (v_ArrVal_1709 Int) (v_ArrVal_1719 Int) (v_ArrVal_1710 Int) (v_ArrVal_1711 Int)) (let ((.cse17 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~l~0#1.base| (store (store .cse8 .cse9 v_ArrVal_1711) .cse10 v_ArrVal_1710)))) (let ((.cse18 (select .cse17 .cse2))) (= (let ((.cse14 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~l~0#1.base| (store (store .cse12 .cse9 v_ArrVal_1707) .cse10 v_ArrVal_1709)))) (let ((.cse15 (select .cse14 .cse2))) (let ((.cse16 (select .cse15 .cse11))) (let ((.cse13 (store (store .cse17 .cse2 (store (store .cse18 .cse4 v_ArrVal_1719) .cse5 v_ArrVal_1718)) .cse16 v_ArrVal_1724))) (select (select .cse13 (select (select (store (store .cse14 .cse2 (store (store .cse15 .cse4 v_ArrVal_1717) .cse5 v_ArrVal_1715)) .cse16 v_ArrVal_1722) |c_ULTIMATE.start_main_~l~0#1.base|) |c_ULTIMATE.start_main_~l~0#1.offset|)) (select (select .cse13 |c_ULTIMATE.start_main_~l~0#1.base|) |c_ULTIMATE.start_main_~l~0#1.offset|)))))) (select .cse18 .cse11))))))))) is different from false [2023-02-15 19:51:14,085 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-15 19:51:14,085 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 6 case distinctions, treesize of input 411 treesize of output 419 [2023-02-15 19:51:14,194 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-15 19:51:14,194 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 6 case distinctions, treesize of input 348 treesize of output 302 [2023-02-15 19:51:14,328 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 41 treesize of output 4 [2023-02-15 19:51:14,463 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 41 treesize of output 4 [2023-02-15 19:51:15,238 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-15 19:51:15,239 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 411 treesize of output 364 [2023-02-15 19:51:15,282 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-15 19:51:15,283 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11560 treesize of output 11065 [2023-02-15 19:51:15,310 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-15 19:51:15,311 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 11059 treesize of output 6787 [2023-02-15 19:51:15,507 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-15 19:51:15,509 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 397007 treesize of output 345815 [2023-02-15 19:51:33,114 WARN L233 SmtUtils]: Spent 17.60s on a formula simplification. DAG size of input: 1066 DAG size of output: 1038 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-02-15 19:51:34,119 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 327275 treesize of output 325569 [2023-02-15 19:51:35,055 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 325569 treesize of output 323297 [2023-02-15 19:51:36,229 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-15 19:51:36,230 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 328548 treesize of output 314530 [2023-02-15 19:51:37,501 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-15 19:51:37,502 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 314480 treesize of output 295040 [2023-02-15 19:51:38,570 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 295219 treesize of output 293667 [2023-02-15 19:51:39,680 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 293667 treesize of output 291833 [2023-02-15 19:51:40,889 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-15 19:51:40,890 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 291613 treesize of output 291518 [2023-02-15 19:51:43,107 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-15 19:51:43,108 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 292414 treesize of output 292094