./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-patterns/array15_pattern.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b5317dae Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/array-patterns/array15_pattern.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 511c1484167d1d7d90ff27dae8a1569edd7c5a72fd917e4f05baeab770e0fcd4 --- Real Ultimate output --- This is Ultimate 0.2.2-?-b5317da-m [2023-02-16 00:03:10,480 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-16 00:03:10,482 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-16 00:03:10,524 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-16 00:03:10,524 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-16 00:03:10,543 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-16 00:03:10,544 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-16 00:03:10,546 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-16 00:03:10,547 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-16 00:03:10,550 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-16 00:03:10,551 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-16 00:03:10,553 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-16 00:03:10,553 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-16 00:03:10,554 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-16 00:03:10,555 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-16 00:03:10,557 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-16 00:03:10,557 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-16 00:03:10,558 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-16 00:03:10,559 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-16 00:03:10,562 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-16 00:03:10,563 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-16 00:03:10,564 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-16 00:03:10,565 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-16 00:03:10,565 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-16 00:03:10,571 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-16 00:03:10,571 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-16 00:03:10,572 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-16 00:03:10,573 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-16 00:03:10,573 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-16 00:03:10,573 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-16 00:03:10,588 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-16 00:03:10,589 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-16 00:03:10,590 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-16 00:03:10,591 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-16 00:03:10,593 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-16 00:03:10,593 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-16 00:03:10,593 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-16 00:03:10,594 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-16 00:03:10,594 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-16 00:03:10,595 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-16 00:03:10,595 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-16 00:03:10,596 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-02-16 00:03:10,616 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-16 00:03:10,617 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-16 00:03:10,617 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-16 00:03:10,617 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-16 00:03:10,633 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-16 00:03:10,633 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-16 00:03:10,634 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-16 00:03:10,634 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-16 00:03:10,634 INFO L138 SettingsManager]: * Use SBE=true [2023-02-16 00:03:10,634 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-16 00:03:10,635 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-16 00:03:10,635 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-16 00:03:10,635 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-16 00:03:10,635 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-16 00:03:10,635 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-16 00:03:10,636 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-16 00:03:10,636 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-16 00:03:10,636 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-16 00:03:10,636 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-16 00:03:10,636 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-16 00:03:10,636 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-16 00:03:10,637 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-16 00:03:10,637 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-16 00:03:10,637 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-16 00:03:10,637 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-16 00:03:10,637 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-16 00:03:10,637 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-16 00:03:10,637 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-16 00:03:10,638 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-16 00:03:10,638 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-16 00:03:10,638 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-16 00:03:10,638 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-16 00:03:10,638 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-16 00:03:10,639 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-16 00:03:10,639 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-16 00:03:10,639 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 511c1484167d1d7d90ff27dae8a1569edd7c5a72fd917e4f05baeab770e0fcd4 [2023-02-16 00:03:10,987 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-16 00:03:11,020 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-16 00:03:11,022 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-16 00:03:11,022 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-16 00:03:11,037 INFO L275 PluginConnector]: CDTParser initialized [2023-02-16 00:03:11,038 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-patterns/array15_pattern.c [2023-02-16 00:03:12,497 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-16 00:03:12,740 INFO L351 CDTParser]: Found 1 translation units. [2023-02-16 00:03:12,741 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-patterns/array15_pattern.c [2023-02-16 00:03:12,745 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a7d04e9df/a6c5d595640e4992bedcdb5062d4b5ab/FLAG08410b1f0 [2023-02-16 00:03:12,777 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a7d04e9df/a6c5d595640e4992bedcdb5062d4b5ab [2023-02-16 00:03:12,781 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-16 00:03:12,782 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-16 00:03:12,786 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-16 00:03:12,790 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-16 00:03:12,802 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-16 00:03:12,804 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.02 12:03:12" (1/1) ... [2023-02-16 00:03:12,806 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12f777e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 12:03:12, skipping insertion in model container [2023-02-16 00:03:12,811 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.02 12:03:12" (1/1) ... [2023-02-16 00:03:12,837 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-16 00:03:12,868 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-16 00:03:13,042 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/array-patterns/array15_pattern.c[1424,1437] [2023-02-16 00:03:13,091 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-16 00:03:13,102 INFO L203 MainTranslator]: Completed pre-run [2023-02-16 00:03:13,116 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/array-patterns/array15_pattern.c[1424,1437] [2023-02-16 00:03:13,154 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-16 00:03:13,167 INFO L208 MainTranslator]: Completed translation [2023-02-16 00:03:13,170 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 12:03:13 WrapperNode [2023-02-16 00:03:13,170 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-16 00:03:13,171 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-16 00:03:13,172 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-16 00:03:13,172 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-16 00:03:13,177 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 12:03:13" (1/1) ... [2023-02-16 00:03:13,192 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 12:03:13" (1/1) ... [2023-02-16 00:03:13,227 INFO L138 Inliner]: procedures = 16, calls = 18, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 96 [2023-02-16 00:03:13,228 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-16 00:03:13,228 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-16 00:03:13,228 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-16 00:03:13,229 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-16 00:03:13,237 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 12:03:13" (1/1) ... [2023-02-16 00:03:13,238 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 12:03:13" (1/1) ... [2023-02-16 00:03:13,242 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 12:03:13" (1/1) ... [2023-02-16 00:03:13,242 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 12:03:13" (1/1) ... [2023-02-16 00:03:13,261 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 12:03:13" (1/1) ... [2023-02-16 00:03:13,266 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 12:03:13" (1/1) ... [2023-02-16 00:03:13,271 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 12:03:13" (1/1) ... [2023-02-16 00:03:13,272 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 12:03:13" (1/1) ... [2023-02-16 00:03:13,275 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-16 00:03:13,279 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-16 00:03:13,280 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-16 00:03:13,280 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-16 00:03:13,281 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 12:03:13" (1/1) ... [2023-02-16 00:03:13,299 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-16 00:03:13,313 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 00:03:13,327 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) [2023-02-16 00:03:13,388 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 [2023-02-16 00:03:13,416 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-16 00:03:13,416 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-02-16 00:03:13,417 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-02-16 00:03:13,417 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-16 00:03:13,417 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-02-16 00:03:13,418 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-02-16 00:03:13,418 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-16 00:03:13,418 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-16 00:03:13,418 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-02-16 00:03:13,418 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-02-16 00:03:13,513 INFO L235 CfgBuilder]: Building ICFG [2023-02-16 00:03:13,515 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-16 00:03:13,807 INFO L276 CfgBuilder]: Performing block encoding [2023-02-16 00:03:13,813 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-16 00:03:13,826 INFO L300 CfgBuilder]: Removed 5 assume(true) statements. [2023-02-16 00:03:13,828 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.02 12:03:13 BoogieIcfgContainer [2023-02-16 00:03:13,828 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-16 00:03:13,830 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-16 00:03:13,837 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-16 00:03:13,839 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-16 00:03:13,853 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.02 12:03:12" (1/3) ... [2023-02-16 00:03:13,853 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a2f6595 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.02 12:03:13, skipping insertion in model container [2023-02-16 00:03:13,854 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 12:03:13" (2/3) ... [2023-02-16 00:03:13,854 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a2f6595 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.02 12:03:13, skipping insertion in model container [2023-02-16 00:03:13,854 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.02 12:03:13" (3/3) ... [2023-02-16 00:03:13,855 INFO L112 eAbstractionObserver]: Analyzing ICFG array15_pattern.c [2023-02-16 00:03:13,880 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-16 00:03:13,881 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-02-16 00:03:13,962 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-16 00:03:13,969 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;@5147bc33, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-16 00:03:13,970 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-02-16 00:03:13,972 INFO L276 IsEmpty]: Start isEmpty. Operand has 32 states, 26 states have (on average 1.5769230769230769) internal successors, (41), 27 states have internal predecessors, (41), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-02-16 00:03:13,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-02-16 00:03:13,980 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 00:03:13,980 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 00:03:13,981 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 00:03:13,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 00:03:13,985 INFO L85 PathProgramCache]: Analyzing trace with hash 179087049, now seen corresponding path program 1 times [2023-02-16 00:03:14,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 00:03:14,002 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335266025] [2023-02-16 00:03:14,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:03:14,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 00:03:14,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:03:14,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 00:03:14,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335266025] [2023-02-16 00:03:14,197 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-02-16 00:03:14,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2100667674] [2023-02-16 00:03:14,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:03:14,198 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 00:03:14,198 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 00:03:14,200 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) [2023-02-16 00:03:14,202 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-16 00:03:14,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:03:14,305 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 1 conjunts are in the unsatisfiable core [2023-02-16 00:03:14,308 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 00:03:14,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 00:03:14,348 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-16 00:03:14,348 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2100667674] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 00:03:14,349 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 00:03:14,349 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-16 00:03:14,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795438822] [2023-02-16 00:03:14,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 00:03:14,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-02-16 00:03:14,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 00:03:14,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-02-16 00:03:14,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-16 00:03:14,402 INFO L87 Difference]: Start difference. First operand has 32 states, 26 states have (on average 1.5769230769230769) internal successors, (41), 27 states have internal predecessors, (41), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-16 00:03:14,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 00:03:14,446 INFO L93 Difference]: Finished difference Result 61 states and 93 transitions. [2023-02-16 00:03:14,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-02-16 00:03:14,448 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2023-02-16 00:03:14,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 00:03:14,452 INFO L225 Difference]: With dead ends: 61 [2023-02-16 00:03:14,455 INFO L226 Difference]: Without dead ends: 28 [2023-02-16 00:03:14,457 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-16 00:03:14,459 INFO L413 NwaCegarLoop]: 39 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, 39 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 [2023-02-16 00:03:14,463 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-16 00:03:14,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2023-02-16 00:03:14,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2023-02-16 00:03:14,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 23 states have (on average 1.2608695652173914) internal successors, (29), 23 states have internal predecessors, (29), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-02-16 00:03:14,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 35 transitions. [2023-02-16 00:03:14,533 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 35 transitions. Word has length 15 [2023-02-16 00:03:14,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 00:03:14,533 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 35 transitions. [2023-02-16 00:03:14,534 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-16 00:03:14,535 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 35 transitions. [2023-02-16 00:03:14,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-02-16 00:03:14,536 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 00:03:14,536 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 00:03:14,554 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-02-16 00:03:14,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-02-16 00:03:14,746 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 00:03:14,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 00:03:14,747 INFO L85 PathProgramCache]: Analyzing trace with hash 1195633489, now seen corresponding path program 1 times [2023-02-16 00:03:14,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 00:03:14,747 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726763252] [2023-02-16 00:03:14,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:03:14,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 00:03:14,776 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-16 00:03:14,780 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1494327517] [2023-02-16 00:03:14,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:03:14,780 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 00:03:14,781 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 00:03:14,793 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) [2023-02-16 00:03:14,857 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-02-16 00:03:14,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:03:14,901 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 7 conjunts are in the unsatisfiable core [2023-02-16 00:03:14,902 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 00:03:15,067 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-16 00:03:15,072 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-16 00:03:15,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 00:03:15,073 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726763252] [2023-02-16 00:03:15,073 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-16 00:03:15,073 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1494327517] [2023-02-16 00:03:15,073 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1494327517] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 00:03:15,073 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 00:03:15,074 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-02-16 00:03:15,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106190530] [2023-02-16 00:03:15,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 00:03:15,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-16 00:03:15,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 00:03:15,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-16 00:03:15,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-02-16 00:03:15,082 INFO L87 Difference]: Start difference. First operand 28 states and 35 transitions. Second operand has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 5 states have internal predecessors, (20), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-02-16 00:03:15,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 00:03:15,255 INFO L93 Difference]: Finished difference Result 60 states and 74 transitions. [2023-02-16 00:03:15,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-02-16 00:03:15,255 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 5 states have internal predecessors, (20), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 29 [2023-02-16 00:03:15,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 00:03:15,257 INFO L225 Difference]: With dead ends: 60 [2023-02-16 00:03:15,257 INFO L226 Difference]: Without dead ends: 40 [2023-02-16 00:03:15,258 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2023-02-16 00:03:15,259 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 39 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-16 00:03:15,260 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 56 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-16 00:03:15,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2023-02-16 00:03:15,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 34. [2023-02-16 00:03:15,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 28 states have (on average 1.2142857142857142) internal successors, (34), 28 states have internal predecessors, (34), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-02-16 00:03:15,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 40 transitions. [2023-02-16 00:03:15,278 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 40 transitions. Word has length 29 [2023-02-16 00:03:15,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 00:03:15,278 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 40 transitions. [2023-02-16 00:03:15,278 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 5 states have internal predecessors, (20), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-02-16 00:03:15,279 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 40 transitions. [2023-02-16 00:03:15,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-02-16 00:03:15,280 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 00:03:15,280 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 00:03:15,295 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-02-16 00:03:15,485 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,SelfDestructingSolverStorable1 [2023-02-16 00:03:15,485 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 00:03:15,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 00:03:15,486 INFO L85 PathProgramCache]: Analyzing trace with hash -712222617, now seen corresponding path program 1 times [2023-02-16 00:03:15,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 00:03:15,486 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565850116] [2023-02-16 00:03:15,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:03:15,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 00:03:15,499 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-16 00:03:15,499 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1883255249] [2023-02-16 00:03:15,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:03:15,500 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 00:03:15,500 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 00:03:15,517 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) [2023-02-16 00:03:15,523 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-02-16 00:03:15,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:03:15,605 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-16 00:03:15,609 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 00:03:15,667 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-02-16 00:03:15,667 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-16 00:03:15,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 00:03:15,668 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565850116] [2023-02-16 00:03:15,668 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-16 00:03:15,668 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1883255249] [2023-02-16 00:03:15,668 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1883255249] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 00:03:15,668 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 00:03:15,669 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-16 00:03:15,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208404741] [2023-02-16 00:03:15,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 00:03:15,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-16 00:03:15,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 00:03:15,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-16 00:03:15,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-16 00:03:15,671 INFO L87 Difference]: Start difference. First operand 34 states and 40 transitions. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-02-16 00:03:15,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 00:03:15,750 INFO L93 Difference]: Finished difference Result 63 states and 77 transitions. [2023-02-16 00:03:15,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-16 00:03:15,751 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 35 [2023-02-16 00:03:15,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 00:03:15,752 INFO L225 Difference]: With dead ends: 63 [2023-02-16 00:03:15,754 INFO L226 Difference]: Without dead ends: 38 [2023-02-16 00:03:15,754 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-02-16 00:03:15,756 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 26 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-16 00:03:15,759 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 49 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-16 00:03:15,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2023-02-16 00:03:15,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 36. [2023-02-16 00:03:15,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 30 states have (on average 1.2) internal successors, (36), 30 states have internal predecessors, (36), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-02-16 00:03:15,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 42 transitions. [2023-02-16 00:03:15,775 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 42 transitions. Word has length 35 [2023-02-16 00:03:15,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 00:03:15,776 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 42 transitions. [2023-02-16 00:03:15,776 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-02-16 00:03:15,776 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 42 transitions. [2023-02-16 00:03:15,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-02-16 00:03:15,777 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 00:03:15,777 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 00:03:15,785 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-02-16 00:03:15,981 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 00:03:15,982 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 00:03:15,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 00:03:15,983 INFO L85 PathProgramCache]: Analyzing trace with hash -459431893, now seen corresponding path program 1 times [2023-02-16 00:03:15,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 00:03:15,983 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083040186] [2023-02-16 00:03:15,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:03:15,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 00:03:16,003 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-16 00:03:16,015 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1892118703] [2023-02-16 00:03:16,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:03:16,016 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 00:03:16,016 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 00:03:16,035 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) [2023-02-16 00:03:16,068 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-02-16 00:03:16,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:03:16,123 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 16 conjunts are in the unsatisfiable core [2023-02-16 00:03:16,124 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 00:03:16,472 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 13 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-16 00:03:16,472 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 00:03:16,950 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-02-16 00:03:16,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 00:03:16,951 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083040186] [2023-02-16 00:03:16,951 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-16 00:03:16,951 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1892118703] [2023-02-16 00:03:16,951 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1892118703] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 00:03:16,951 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-16 00:03:16,951 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 20 [2023-02-16 00:03:16,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316459475] [2023-02-16 00:03:16,952 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-16 00:03:16,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-02-16 00:03:16,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 00:03:16,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-02-16 00:03:16,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=305, Unknown=0, NotChecked=0, Total=380 [2023-02-16 00:03:16,954 INFO L87 Difference]: Start difference. First operand 36 states and 42 transitions. Second operand has 20 states, 18 states have (on average 2.2777777777777777) internal successors, (41), 15 states have internal predecessors, (41), 4 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2023-02-16 00:03:17,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 00:03:17,414 INFO L93 Difference]: Finished difference Result 107 states and 126 transitions. [2023-02-16 00:03:17,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-02-16 00:03:17,416 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 18 states have (on average 2.2777777777777777) internal successors, (41), 15 states have internal predecessors, (41), 4 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) Word has length 39 [2023-02-16 00:03:17,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 00:03:17,420 INFO L225 Difference]: With dead ends: 107 [2023-02-16 00:03:17,420 INFO L226 Difference]: Without dead ends: 85 [2023-02-16 00:03:17,422 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 55 SyntacticMatches, 3 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 199 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=183, Invalid=747, Unknown=0, NotChecked=0, Total=930 [2023-02-16 00:03:17,425 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 105 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 358 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 382 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 358 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-16 00:03:17,427 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 176 Invalid, 382 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 358 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-16 00:03:17,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2023-02-16 00:03:17,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 60. [2023-02-16 00:03:17,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 49 states have (on average 1.2040816326530612) internal successors, (59), 50 states have internal predecessors, (59), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2023-02-16 00:03:17,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 71 transitions. [2023-02-16 00:03:17,449 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 71 transitions. Word has length 39 [2023-02-16 00:03:17,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 00:03:17,450 INFO L495 AbstractCegarLoop]: Abstraction has 60 states and 71 transitions. [2023-02-16 00:03:17,451 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 18 states have (on average 2.2777777777777777) internal successors, (41), 15 states have internal predecessors, (41), 4 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2023-02-16 00:03:17,451 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 71 transitions. [2023-02-16 00:03:17,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-02-16 00:03:17,453 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 00:03:17,453 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 00:03:17,460 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-02-16 00:03:17,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 00:03:17,658 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 00:03:17,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 00:03:17,658 INFO L85 PathProgramCache]: Analyzing trace with hash -1046237907, now seen corresponding path program 1 times [2023-02-16 00:03:17,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 00:03:17,659 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184048055] [2023-02-16 00:03:17,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:03:17,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 00:03:17,668 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-16 00:03:17,669 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1793210233] [2023-02-16 00:03:17,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:03:17,669 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 00:03:17,669 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 00:03:17,688 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) [2023-02-16 00:03:17,747 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-02-16 00:03:17,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:03:17,780 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 49 conjunts are in the unsatisfiable core [2023-02-16 00:03:17,785 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 00:03:17,929 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 15 treesize of output 11 [2023-02-16 00:03:18,483 INFO L321 Elim1Store]: treesize reduction 53, result has 5.4 percent of original size [2023-02-16 00:03:18,484 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 2 new quantified variables, introduced 2 case distinctions, treesize of input 41 treesize of output 23 [2023-02-16 00:03:18,624 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 [2023-02-16 00:03:18,699 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-16 00:03:18,699 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 00:03:19,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 00:03:19,003 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184048055] [2023-02-16 00:03:19,003 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-16 00:03:19,003 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1793210233] [2023-02-16 00:03:19,003 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1793210233] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 00:03:19,003 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-02-16 00:03:19,003 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2023-02-16 00:03:19,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367659291] [2023-02-16 00:03:19,003 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-02-16 00:03:19,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-02-16 00:03:19,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 00:03:19,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-02-16 00:03:19,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=185, Invalid=745, Unknown=0, NotChecked=0, Total=930 [2023-02-16 00:03:19,005 INFO L87 Difference]: Start difference. First operand 60 states and 71 transitions. Second operand has 22 states, 21 states have (on average 1.4285714285714286) internal successors, (30), 18 states have internal predecessors, (30), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-02-16 00:03:20,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 00:03:20,095 INFO L93 Difference]: Finished difference Result 126 states and 151 transitions. [2023-02-16 00:03:20,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-02-16 00:03:20,095 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 1.4285714285714286) internal successors, (30), 18 states have internal predecessors, (30), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 39 [2023-02-16 00:03:20,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 00:03:20,096 INFO L225 Difference]: With dead ends: 126 [2023-02-16 00:03:20,096 INFO L226 Difference]: Without dead ends: 122 [2023-02-16 00:03:20,097 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 593 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=508, Invalid=1942, Unknown=0, NotChecked=0, Total=2450 [2023-02-16 00:03:20,097 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 128 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 389 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 433 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 389 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-02-16 00:03:20,098 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 132 Invalid, 433 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 389 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-02-16 00:03:20,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2023-02-16 00:03:20,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 91. [2023-02-16 00:03:20,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 75 states have (on average 1.2) internal successors, (90), 77 states have internal predecessors, (90), 9 states have call successors, (9), 6 states have call predecessors, (9), 6 states have return successors, (9), 7 states have call predecessors, (9), 9 states have call successors, (9) [2023-02-16 00:03:20,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 108 transitions. [2023-02-16 00:03:20,115 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 108 transitions. Word has length 39 [2023-02-16 00:03:20,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 00:03:20,116 INFO L495 AbstractCegarLoop]: Abstraction has 91 states and 108 transitions. [2023-02-16 00:03:20,116 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 1.4285714285714286) internal successors, (30), 18 states have internal predecessors, (30), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-02-16 00:03:20,116 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 108 transitions. [2023-02-16 00:03:20,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-02-16 00:03:20,130 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 00:03:20,130 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 00:03:20,137 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-02-16 00:03:20,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 00:03:20,335 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 00:03:20,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 00:03:20,335 INFO L85 PathProgramCache]: Analyzing trace with hash -252023569, now seen corresponding path program 2 times [2023-02-16 00:03:20,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 00:03:20,335 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432728467] [2023-02-16 00:03:20,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:03:20,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 00:03:20,347 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-16 00:03:20,350 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [755302913] [2023-02-16 00:03:20,350 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-16 00:03:20,350 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 00:03:20,350 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 00:03:20,369 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) [2023-02-16 00:03:20,402 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-02-16 00:03:20,446 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-16 00:03:20,446 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-16 00:03:20,447 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 6 conjunts are in the unsatisfiable core [2023-02-16 00:03:20,450 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 00:03:20,513 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-16 00:03:20,513 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 00:03:20,576 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-02-16 00:03:20,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 00:03:20,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432728467] [2023-02-16 00:03:20,576 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-16 00:03:20,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [755302913] [2023-02-16 00:03:20,577 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [755302913] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 00:03:20,577 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-16 00:03:20,578 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2023-02-16 00:03:20,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061629754] [2023-02-16 00:03:20,578 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-16 00:03:20,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-02-16 00:03:20,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 00:03:20,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-02-16 00:03:20,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-02-16 00:03:20,580 INFO L87 Difference]: Start difference. First operand 91 states and 108 transitions. Second operand has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-02-16 00:03:20,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 00:03:20,717 INFO L93 Difference]: Finished difference Result 199 states and 238 transitions. [2023-02-16 00:03:20,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-02-16 00:03:20,717 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 41 [2023-02-16 00:03:20,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 00:03:20,720 INFO L225 Difference]: With dead ends: 199 [2023-02-16 00:03:20,720 INFO L226 Difference]: Without dead ends: 138 [2023-02-16 00:03:20,720 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 70 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2023-02-16 00:03:20,721 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 114 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-16 00:03:20,722 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 123 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-16 00:03:20,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2023-02-16 00:03:20,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 100. [2023-02-16 00:03:20,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 84 states have (on average 1.1666666666666667) internal successors, (98), 86 states have internal predecessors, (98), 9 states have call successors, (9), 6 states have call predecessors, (9), 6 states have return successors, (9), 7 states have call predecessors, (9), 9 states have call successors, (9) [2023-02-16 00:03:20,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 116 transitions. [2023-02-16 00:03:20,749 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 116 transitions. Word has length 41 [2023-02-16 00:03:20,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 00:03:20,749 INFO L495 AbstractCegarLoop]: Abstraction has 100 states and 116 transitions. [2023-02-16 00:03:20,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-02-16 00:03:20,749 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 116 transitions. [2023-02-16 00:03:20,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-02-16 00:03:20,751 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 00:03:20,751 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 00:03:20,759 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-02-16 00:03:20,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 00:03:20,956 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 00:03:20,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 00:03:20,957 INFO L85 PathProgramCache]: Analyzing trace with hash 796161581, now seen corresponding path program 2 times [2023-02-16 00:03:20,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 00:03:20,957 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122982685] [2023-02-16 00:03:20,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:03:20,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 00:03:20,966 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-16 00:03:20,966 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1541966756] [2023-02-16 00:03:20,966 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-16 00:03:20,966 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 00:03:20,966 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 00:03:20,993 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) [2023-02-16 00:03:21,027 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-02-16 00:03:21,077 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-16 00:03:21,077 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-16 00:03:21,079 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 6 conjunts are in the unsatisfiable core [2023-02-16 00:03:21,085 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 00:03:21,130 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-02-16 00:03:21,130 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 00:03:21,169 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-02-16 00:03:21,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 00:03:21,170 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122982685] [2023-02-16 00:03:21,170 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-16 00:03:21,170 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1541966756] [2023-02-16 00:03:21,170 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1541966756] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 00:03:21,170 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-16 00:03:21,170 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2023-02-16 00:03:21,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880695636] [2023-02-16 00:03:21,170 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-16 00:03:21,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-02-16 00:03:21,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 00:03:21,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-02-16 00:03:21,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2023-02-16 00:03:21,172 INFO L87 Difference]: Start difference. First operand 100 states and 116 transitions. Second operand has 11 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 11 states have internal predecessors, (40), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-02-16 00:03:21,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 00:03:21,314 INFO L93 Difference]: Finished difference Result 160 states and 191 transitions. [2023-02-16 00:03:21,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-02-16 00:03:21,315 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 11 states have internal predecessors, (40), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 41 [2023-02-16 00:03:21,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 00:03:21,316 INFO L225 Difference]: With dead ends: 160 [2023-02-16 00:03:21,316 INFO L226 Difference]: Without dead ends: 131 [2023-02-16 00:03:21,317 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 70 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2023-02-16 00:03:21,317 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 43 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-16 00:03:21,318 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 117 Invalid, 188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-16 00:03:21,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2023-02-16 00:03:21,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 111. [2023-02-16 00:03:21,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 95 states have (on average 1.1789473684210525) internal successors, (112), 97 states have internal predecessors, (112), 9 states have call successors, (9), 6 states have call predecessors, (9), 6 states have return successors, (9), 7 states have call predecessors, (9), 9 states have call successors, (9) [2023-02-16 00:03:21,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 130 transitions. [2023-02-16 00:03:21,336 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 130 transitions. Word has length 41 [2023-02-16 00:03:21,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 00:03:21,336 INFO L495 AbstractCegarLoop]: Abstraction has 111 states and 130 transitions. [2023-02-16 00:03:21,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 11 states have internal predecessors, (40), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-02-16 00:03:21,337 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 130 transitions. [2023-02-16 00:03:21,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2023-02-16 00:03:21,338 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 00:03:21,338 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 00:03:21,345 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-02-16 00:03:21,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 00:03:21,543 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 00:03:21,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 00:03:21,543 INFO L85 PathProgramCache]: Analyzing trace with hash 178867369, now seen corresponding path program 3 times [2023-02-16 00:03:21,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 00:03:21,543 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140439527] [2023-02-16 00:03:21,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:03:21,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 00:03:21,552 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-16 00:03:21,552 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1050283311] [2023-02-16 00:03:21,552 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-16 00:03:21,552 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 00:03:21,552 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 00:03:21,577 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) [2023-02-16 00:03:21,608 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-02-16 00:03:21,663 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2023-02-16 00:03:21,663 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-16 00:03:21,664 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 6 conjunts are in the unsatisfiable core [2023-02-16 00:03:21,665 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 00:03:21,710 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-02-16 00:03:21,710 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 00:03:21,754 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-02-16 00:03:21,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 00:03:21,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140439527] [2023-02-16 00:03:21,754 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-16 00:03:21,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1050283311] [2023-02-16 00:03:21,754 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1050283311] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 00:03:21,755 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-16 00:03:21,755 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2023-02-16 00:03:21,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720867571] [2023-02-16 00:03:21,755 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-16 00:03:21,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-02-16 00:03:21,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 00:03:21,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-02-16 00:03:21,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-02-16 00:03:21,757 INFO L87 Difference]: Start difference. First operand 111 states and 130 transitions. Second operand has 8 states, 8 states have (on average 4.5) internal successors, (36), 8 states have internal predecessors, (36), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-02-16 00:03:21,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 00:03:21,845 INFO L93 Difference]: Finished difference Result 151 states and 173 transitions. [2023-02-16 00:03:21,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-02-16 00:03:21,845 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 8 states have internal predecessors, (36), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 44 [2023-02-16 00:03:21,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 00:03:21,846 INFO L225 Difference]: With dead ends: 151 [2023-02-16 00:03:21,846 INFO L226 Difference]: Without dead ends: 58 [2023-02-16 00:03:21,847 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 82 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2023-02-16 00:03:21,848 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 51 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-16 00:03:21,849 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 69 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-16 00:03:21,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2023-02-16 00:03:21,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 56. [2023-02-16 00:03:21,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 50 states have (on average 1.18) internal successors, (59), 50 states have internal predecessors, (59), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-02-16 00:03:21,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 65 transitions. [2023-02-16 00:03:21,855 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 65 transitions. Word has length 44 [2023-02-16 00:03:21,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 00:03:21,856 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 65 transitions. [2023-02-16 00:03:21,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 8 states have internal predecessors, (36), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-02-16 00:03:21,856 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 65 transitions. [2023-02-16 00:03:21,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2023-02-16 00:03:21,856 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 00:03:21,857 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 00:03:21,873 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-02-16 00:03:22,061 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,SelfDestructingSolverStorable7 [2023-02-16 00:03:22,061 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 00:03:22,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 00:03:22,062 INFO L85 PathProgramCache]: Analyzing trace with hash 1693722629, now seen corresponding path program 3 times [2023-02-16 00:03:22,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 00:03:22,062 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690461725] [2023-02-16 00:03:22,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:03:22,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 00:03:22,071 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-16 00:03:22,071 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [644262681] [2023-02-16 00:03:22,071 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-16 00:03:22,071 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 00:03:22,071 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 00:03:22,085 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) [2023-02-16 00:03:22,148 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-02-16 00:03:22,162 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-02-16 00:03:22,163 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-16 00:03:22,163 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 16 conjunts are in the unsatisfiable core [2023-02-16 00:03:22,166 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 00:03:22,315 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-02-16 00:03:22,315 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 00:03:22,594 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2023-02-16 00:03:22,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 00:03:22,595 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690461725] [2023-02-16 00:03:22,595 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-16 00:03:22,595 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [644262681] [2023-02-16 00:03:22,595 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [644262681] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 00:03:22,595 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-16 00:03:22,595 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 22 [2023-02-16 00:03:22,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207357990] [2023-02-16 00:03:22,597 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-16 00:03:22,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-02-16 00:03:22,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 00:03:22,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-02-16 00:03:22,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=361, Unknown=0, NotChecked=0, Total=462 [2023-02-16 00:03:22,598 INFO L87 Difference]: Start difference. First operand 56 states and 65 transitions. Second operand has 22 states, 20 states have (on average 2.4) internal successors, (48), 17 states have internal predecessors, (48), 3 states have call successors, (4), 2 states have call predecessors, (4), 5 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) [2023-02-16 00:03:23,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 00:03:23,039 INFO L93 Difference]: Finished difference Result 100 states and 115 transitions. [2023-02-16 00:03:23,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-02-16 00:03:23,040 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 20 states have (on average 2.4) internal successors, (48), 17 states have internal predecessors, (48), 3 states have call successors, (4), 2 states have call predecessors, (4), 5 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) Word has length 48 [2023-02-16 00:03:23,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 00:03:23,041 INFO L225 Difference]: With dead ends: 100 [2023-02-16 00:03:23,041 INFO L226 Difference]: Without dead ends: 94 [2023-02-16 00:03:23,042 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 73 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 285 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=318, Invalid=1014, Unknown=0, NotChecked=0, Total=1332 [2023-02-16 00:03:23,042 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 126 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 293 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 293 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-16 00:03:23,042 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 130 Invalid, 306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 293 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-16 00:03:23,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2023-02-16 00:03:23,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 72. [2023-02-16 00:03:23,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 63 states have (on average 1.1746031746031746) internal successors, (74), 63 states have internal predecessors, (74), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-02-16 00:03:23,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 84 transitions. [2023-02-16 00:03:23,054 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 84 transitions. Word has length 48 [2023-02-16 00:03:23,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 00:03:23,055 INFO L495 AbstractCegarLoop]: Abstraction has 72 states and 84 transitions. [2023-02-16 00:03:23,055 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 20 states have (on average 2.4) internal successors, (48), 17 states have internal predecessors, (48), 3 states have call successors, (4), 2 states have call predecessors, (4), 5 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) [2023-02-16 00:03:23,055 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 84 transitions. [2023-02-16 00:03:23,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2023-02-16 00:03:23,056 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 00:03:23,056 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 00:03:23,064 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-02-16 00:03:23,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 00:03:23,262 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 00:03:23,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 00:03:23,262 INFO L85 PathProgramCache]: Analyzing trace with hash 1106916615, now seen corresponding path program 4 times [2023-02-16 00:03:23,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 00:03:23,262 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717460833] [2023-02-16 00:03:23,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:03:23,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 00:03:23,272 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-16 00:03:23,272 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1547784966] [2023-02-16 00:03:23,272 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-02-16 00:03:23,272 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 00:03:23,272 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 00:03:23,287 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) [2023-02-16 00:03:23,332 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-02-16 00:03:23,359 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-02-16 00:03:23,359 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-16 00:03:23,367 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 6 conjunts are in the unsatisfiable core [2023-02-16 00:03:23,369 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 00:03:23,439 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 12 proven. 12 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-02-16 00:03:23,440 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 00:03:23,508 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-02-16 00:03:23,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 00:03:23,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717460833] [2023-02-16 00:03:23,508 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-16 00:03:23,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1547784966] [2023-02-16 00:03:23,508 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1547784966] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 00:03:23,508 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-16 00:03:23,509 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2023-02-16 00:03:23,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232544065] [2023-02-16 00:03:23,510 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-16 00:03:23,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-02-16 00:03:23,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 00:03:23,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-02-16 00:03:23,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-02-16 00:03:23,511 INFO L87 Difference]: Start difference. First operand 72 states and 84 transitions. Second operand has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 9 states have internal predecessors, (38), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-02-16 00:03:23,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 00:03:23,625 INFO L93 Difference]: Finished difference Result 79 states and 90 transitions. [2023-02-16 00:03:23,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-02-16 00:03:23,626 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 9 states have internal predecessors, (38), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 48 [2023-02-16 00:03:23,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 00:03:23,628 INFO L225 Difference]: With dead ends: 79 [2023-02-16 00:03:23,628 INFO L226 Difference]: Without dead ends: 73 [2023-02-16 00:03:23,628 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 84 SyntacticMatches, 3 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2023-02-16 00:03:23,628 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 39 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-16 00:03:23,629 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 67 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-16 00:03:23,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2023-02-16 00:03:23,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 54. [2023-02-16 00:03:23,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 48 states have (on average 1.1666666666666667) internal successors, (56), 48 states have internal predecessors, (56), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-02-16 00:03:23,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 62 transitions. [2023-02-16 00:03:23,635 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 62 transitions. Word has length 48 [2023-02-16 00:03:23,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 00:03:23,635 INFO L495 AbstractCegarLoop]: Abstraction has 54 states and 62 transitions. [2023-02-16 00:03:23,636 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 9 states have internal predecessors, (38), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-02-16 00:03:23,636 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 62 transitions. [2023-02-16 00:03:23,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-02-16 00:03:23,636 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 00:03:23,636 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 00:03:23,657 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-02-16 00:03:23,840 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,SelfDestructingSolverStorable9 [2023-02-16 00:03:23,841 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 00:03:23,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 00:03:23,841 INFO L85 PathProgramCache]: Analyzing trace with hash 11450257, now seen corresponding path program 4 times [2023-02-16 00:03:23,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 00:03:23,841 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300431147] [2023-02-16 00:03:23,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:03:23,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 00:03:23,850 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-16 00:03:23,851 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1525037548] [2023-02-16 00:03:23,851 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-02-16 00:03:23,851 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 00:03:23,851 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 00:03:23,867 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) [2023-02-16 00:03:23,904 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-02-16 00:03:24,112 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-02-16 00:03:24,112 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-16 00:03:24,114 INFO L263 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 83 conjunts are in the unsatisfiable core [2023-02-16 00:03:24,118 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 00:03:24,219 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 20 treesize of output 16 [2023-02-16 00:03:24,294 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 38 treesize of output 37 [2023-02-16 00:03:24,552 INFO L321 Elim1Store]: treesize reduction 66, result has 20.5 percent of original size [2023-02-16 00:03:24,552 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 2 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 39 [2023-02-16 00:03:24,705 INFO L321 Elim1Store]: treesize reduction 66, result has 20.5 percent of original size [2023-02-16 00:03:24,705 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 44 treesize of output 49 [2023-02-16 00:03:37,416 INFO L321 Elim1Store]: treesize reduction 165, result has 29.2 percent of original size [2023-02-16 00:03:37,416 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 60 treesize of output 96 [2023-02-16 00:03:56,084 INFO L321 Elim1Store]: treesize reduction 87, result has 66.4 percent of original size [2023-02-16 00:03:56,085 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 123 treesize of output 213 [2023-02-16 00:03:58,153 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 8 proven. 50 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-16 00:03:58,153 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 00:04:03,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 00:04:03,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300431147] [2023-02-16 00:04:03,896 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-16 00:04:03,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1525037548] [2023-02-16 00:04:03,896 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1525037548] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 00:04:03,896 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-02-16 00:04:03,896 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2023-02-16 00:04:03,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563380356] [2023-02-16 00:04:03,896 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-02-16 00:04:03,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2023-02-16 00:04:03,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 00:04:03,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2023-02-16 00:04:03,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=335, Invalid=2628, Unknown=7, NotChecked=0, Total=2970 [2023-02-16 00:04:03,898 INFO L87 Difference]: Start difference. First operand 54 states and 62 transitions. Second operand has 36 states, 35 states have (on average 1.3714285714285714) internal successors, (48), 32 states have internal predecessors, (48), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-02-16 00:04:08,187 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-02-16 00:04:11,263 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-02-16 00:04:16,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 00:04:16,600 INFO L93 Difference]: Finished difference Result 147 states and 173 transitions. [2023-02-16 00:04:16,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2023-02-16 00:04:16,600 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 35 states have (on average 1.3714285714285714) internal successors, (48), 32 states have internal predecessors, (48), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 57 [2023-02-16 00:04:16,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 00:04:16,601 INFO L225 Difference]: With dead ends: 147 [2023-02-16 00:04:16,601 INFO L226 Difference]: Without dead ends: 143 [2023-02-16 00:04:16,602 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 30 SyntacticMatches, 2 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1430 ImplicationChecksByTransitivity, 37.3s TimeCoverageRelationStatistics Valid=442, Invalid=3583, Unknown=7, NotChecked=0, Total=4032 [2023-02-16 00:04:16,603 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 97 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 804 mSolverCounterSat, 15 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 177 SdHoareTripleChecker+Invalid, 821 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 804 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.9s IncrementalHoareTripleChecker+Time [2023-02-16 00:04:16,603 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 177 Invalid, 821 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 804 Invalid, 2 Unknown, 0 Unchecked, 10.9s Time] [2023-02-16 00:04:16,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2023-02-16 00:04:16,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 90. [2023-02-16 00:04:16,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 81 states have (on average 1.1851851851851851) internal successors, (96), 81 states have internal predecessors, (96), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-02-16 00:04:16,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 106 transitions. [2023-02-16 00:04:16,619 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 106 transitions. Word has length 57 [2023-02-16 00:04:16,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 00:04:16,620 INFO L495 AbstractCegarLoop]: Abstraction has 90 states and 106 transitions. [2023-02-16 00:04:16,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 35 states have (on average 1.3714285714285714) internal successors, (48), 32 states have internal predecessors, (48), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-02-16 00:04:16,620 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 106 transitions. [2023-02-16 00:04:16,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-02-16 00:04:16,621 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 00:04:16,621 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 00:04:16,641 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-02-16 00:04:16,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-02-16 00:04:16,827 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 00:04:16,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 00:04:16,828 INFO L85 PathProgramCache]: Analyzing trace with hash 230304975, now seen corresponding path program 5 times [2023-02-16 00:04:16,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 00:04:16,828 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709621920] [2023-02-16 00:04:16,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:04:16,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 00:04:16,866 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-16 00:04:16,869 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [999934675] [2023-02-16 00:04:16,869 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-02-16 00:04:16,869 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 00:04:16,869 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 00:04:16,870 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-16 00:04:16,898 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-02-16 00:04:17,332 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2023-02-16 00:04:17,332 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-16 00:04:17,335 INFO L263 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 58 conjunts are in the unsatisfiable core [2023-02-16 00:04:17,338 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 00:04:17,367 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 20 treesize of output 16 [2023-02-16 00:04:17,429 INFO L321 Elim1Store]: treesize reduction 26, result has 48.0 percent of original size [2023-02-16 00:04:17,430 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 1 case distinctions, treesize of input 37 treesize of output 44 [2023-02-16 00:04:17,699 INFO L321 Elim1Store]: treesize reduction 92, result has 20.0 percent of original size [2023-02-16 00:04:17,699 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 2 new quantified variables, introduced 3 case distinctions, treesize of input 43 treesize of output 45 [2023-02-16 00:04:17,851 INFO L321 Elim1Store]: treesize reduction 112, result has 17.0 percent of original size [2023-02-16 00:04:17,852 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 54 treesize of output 59 [2023-02-16 00:04:21,026 INFO L321 Elim1Store]: treesize reduction 327, result has 13.3 percent of original size [2023-02-16 00:04:21,026 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 14 case distinctions, treesize of input 83 treesize of output 78 [2023-02-16 00:04:22,239 INFO L321 Elim1Store]: treesize reduction 330, result has 3.8 percent of original size [2023-02-16 00:04:22,239 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 86 treesize of output 32 [2023-02-16 00:04:22,321 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 8 proven. 50 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-16 00:04:22,322 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 00:04:24,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 00:04:24,307 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709621920] [2023-02-16 00:04:24,307 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-16 00:04:24,307 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [999934675] [2023-02-16 00:04:24,307 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [999934675] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 00:04:24,307 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-02-16 00:04:24,307 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2023-02-16 00:04:24,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466295043] [2023-02-16 00:04:24,307 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-02-16 00:04:24,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-02-16 00:04:24,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 00:04:24,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-02-16 00:04:24,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=244, Invalid=1478, Unknown=0, NotChecked=0, Total=1722 [2023-02-16 00:04:24,308 INFO L87 Difference]: Start difference. First operand 90 states and 106 transitions. Second operand has 28 states, 28 states have (on average 1.7142857142857142) internal successors, (48), 28 states have internal predecessors, (48), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-02-16 00:04:27,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 00:04:27,238 INFO L93 Difference]: Finished difference Result 160 states and 189 transitions. [2023-02-16 00:04:27,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-02-16 00:04:27,239 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 1.7142857142857142) internal successors, (48), 28 states have internal predecessors, (48), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 57 [2023-02-16 00:04:27,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 00:04:27,240 INFO L225 Difference]: With dead ends: 160 [2023-02-16 00:04:27,240 INFO L226 Difference]: Without dead ends: 156 [2023-02-16 00:04:27,241 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 36 SyntacticMatches, 4 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1106 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=485, Invalid=2707, Unknown=0, NotChecked=0, Total=3192 [2023-02-16 00:04:27,241 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 66 mSDsluCounter, 231 mSDsCounter, 0 mSdLazyCounter, 616 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 263 SdHoareTripleChecker+Invalid, 659 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 616 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-02-16 00:04:27,241 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 263 Invalid, 659 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 616 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-02-16 00:04:27,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2023-02-16 00:04:27,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 117. [2023-02-16 00:04:27,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 105 states have (on average 1.1904761904761905) internal successors, (125), 105 states have internal predecessors, (125), 7 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-02-16 00:04:27,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 139 transitions. [2023-02-16 00:04:27,266 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 139 transitions. Word has length 57 [2023-02-16 00:04:27,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 00:04:27,268 INFO L495 AbstractCegarLoop]: Abstraction has 117 states and 139 transitions. [2023-02-16 00:04:27,268 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 1.7142857142857142) internal successors, (48), 28 states have internal predecessors, (48), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-02-16 00:04:27,268 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 139 transitions. [2023-02-16 00:04:27,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-02-16 00:04:27,269 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 00:04:27,270 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 00:04:27,288 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-02-16 00:04:27,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-02-16 00:04:27,477 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 00:04:27,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 00:04:27,477 INFO L85 PathProgramCache]: Analyzing trace with hash -1720947117, now seen corresponding path program 5 times [2023-02-16 00:04:27,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 00:04:27,478 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851293611] [2023-02-16 00:04:27,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:04:27,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 00:04:27,484 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-16 00:04:27,484 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [227292886] [2023-02-16 00:04:27,485 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-02-16 00:04:27,485 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 00:04:27,485 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 00:04:27,501 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-16 00:04:27,511 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-02-16 00:04:27,779 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2023-02-16 00:04:27,779 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-16 00:04:27,781 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 8 conjunts are in the unsatisfiable core [2023-02-16 00:04:27,781 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 00:04:27,878 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 40 proven. 17 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-02-16 00:04:27,878 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 00:04:27,943 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 19 proven. 30 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-02-16 00:04:27,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 00:04:27,943 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851293611] [2023-02-16 00:04:27,943 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-16 00:04:27,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [227292886] [2023-02-16 00:04:27,944 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [227292886] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 00:04:27,944 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-16 00:04:27,944 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2023-02-16 00:04:27,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394919943] [2023-02-16 00:04:27,944 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-16 00:04:27,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-02-16 00:04:27,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 00:04:27,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-02-16 00:04:27,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2023-02-16 00:04:27,945 INFO L87 Difference]: Start difference. First operand 117 states and 139 transitions. Second operand has 12 states, 12 states have (on average 4.25) internal successors, (51), 12 states have internal predecessors, (51), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-02-16 00:04:28,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 00:04:28,128 INFO L93 Difference]: Finished difference Result 279 states and 335 transitions. [2023-02-16 00:04:28,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-02-16 00:04:28,129 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.25) internal successors, (51), 12 states have internal predecessors, (51), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 59 [2023-02-16 00:04:28,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 00:04:28,129 INFO L225 Difference]: With dead ends: 279 [2023-02-16 00:04:28,129 INFO L226 Difference]: Without dead ends: 168 [2023-02-16 00:04:28,130 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 102 SyntacticMatches, 4 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2023-02-16 00:04:28,130 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 145 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-16 00:04:28,131 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [147 Valid, 105 Invalid, 209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-16 00:04:28,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2023-02-16 00:04:28,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 135. [2023-02-16 00:04:28,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 120 states have (on average 1.1666666666666667) internal successors, (140), 120 states have internal predecessors, (140), 9 states have call successors, (9), 5 states have call predecessors, (9), 5 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-02-16 00:04:28,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 158 transitions. [2023-02-16 00:04:28,157 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 158 transitions. Word has length 59 [2023-02-16 00:04:28,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 00:04:28,158 INFO L495 AbstractCegarLoop]: Abstraction has 135 states and 158 transitions. [2023-02-16 00:04:28,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.25) internal successors, (51), 12 states have internal predecessors, (51), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-02-16 00:04:28,158 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 158 transitions. [2023-02-16 00:04:28,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-02-16 00:04:28,158 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 00:04:28,158 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 00:04:28,169 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-02-16 00:04:28,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-02-16 00:04:28,369 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 00:04:28,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 00:04:28,369 INFO L85 PathProgramCache]: Analyzing trace with hash -1961832173, now seen corresponding path program 6 times [2023-02-16 00:04:28,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 00:04:28,369 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773512044] [2023-02-16 00:04:28,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:04:28,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 00:04:28,379 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-16 00:04:28,380 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [145864883] [2023-02-16 00:04:28,380 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-02-16 00:04:28,380 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 00:04:28,380 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 00:04:28,382 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-16 00:04:28,383 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-02-16 00:04:28,473 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2023-02-16 00:04:28,473 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-16 00:04:28,474 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 8 conjunts are in the unsatisfiable core [2023-02-16 00:04:28,475 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 00:04:28,577 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 14 proven. 35 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-02-16 00:04:28,577 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 00:04:28,648 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 6 proven. 35 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-02-16 00:04:28,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 00:04:28,648 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773512044] [2023-02-16 00:04:28,648 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-16 00:04:28,648 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [145864883] [2023-02-16 00:04:28,648 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [145864883] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 00:04:28,648 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-16 00:04:28,648 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2023-02-16 00:04:28,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425671597] [2023-02-16 00:04:28,649 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-16 00:04:28,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-02-16 00:04:28,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 00:04:28,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-02-16 00:04:28,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2023-02-16 00:04:28,650 INFO L87 Difference]: Start difference. First operand 135 states and 158 transitions. Second operand has 12 states, 12 states have (on average 4.416666666666667) internal successors, (53), 12 states have internal predecessors, (53), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-02-16 00:04:28,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 00:04:28,943 INFO L93 Difference]: Finished difference Result 200 states and 231 transitions. [2023-02-16 00:04:28,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-02-16 00:04:28,944 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.416666666666667) internal successors, (53), 12 states have internal predecessors, (53), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 59 [2023-02-16 00:04:28,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 00:04:28,944 INFO L225 Difference]: With dead ends: 200 [2023-02-16 00:04:28,945 INFO L226 Difference]: Without dead ends: 196 [2023-02-16 00:04:28,945 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 102 SyntacticMatches, 4 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=238, Invalid=518, Unknown=0, NotChecked=0, Total=756 [2023-02-16 00:04:28,945 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 50 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 238 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-16 00:04:28,946 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 163 Invalid, 247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 238 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-16 00:04:28,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2023-02-16 00:04:28,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 155. [2023-02-16 00:04:28,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 137 states have (on average 1.1751824817518248) internal successors, (161), 137 states have internal predecessors, (161), 11 states have call successors, (11), 6 states have call predecessors, (11), 6 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2023-02-16 00:04:28,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 183 transitions. [2023-02-16 00:04:28,978 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 183 transitions. Word has length 59 [2023-02-16 00:04:28,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 00:04:28,978 INFO L495 AbstractCegarLoop]: Abstraction has 155 states and 183 transitions. [2023-02-16 00:04:28,979 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.416666666666667) internal successors, (53), 12 states have internal predecessors, (53), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-02-16 00:04:28,979 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 183 transitions. [2023-02-16 00:04:28,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-02-16 00:04:28,979 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 00:04:28,979 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 00:04:28,987 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-02-16 00:04:29,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 00:04:29,184 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 00:04:29,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 00:04:29,185 INFO L85 PathProgramCache]: Analyzing trace with hash 1029790343, now seen corresponding path program 7 times [2023-02-16 00:04:29,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 00:04:29,185 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474625189] [2023-02-16 00:04:29,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:04:29,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 00:04:29,193 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-16 00:04:29,193 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2116280937] [2023-02-16 00:04:29,194 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-02-16 00:04:29,194 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 00:04:29,194 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 00:04:29,197 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-16 00:04:29,203 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-02-16 00:04:29,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:04:29,259 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 8 conjunts are in the unsatisfiable core [2023-02-16 00:04:29,260 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 00:04:29,341 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 58 proven. 17 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-02-16 00:04:29,341 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 00:04:29,410 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 50 proven. 17 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-02-16 00:04:29,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 00:04:29,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474625189] [2023-02-16 00:04:29,411 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-16 00:04:29,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2116280937] [2023-02-16 00:04:29,411 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2116280937] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 00:04:29,411 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-16 00:04:29,411 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2023-02-16 00:04:29,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338415793] [2023-02-16 00:04:29,412 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-16 00:04:29,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-02-16 00:04:29,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 00:04:29,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-02-16 00:04:29,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2023-02-16 00:04:29,412 INFO L87 Difference]: Start difference. First operand 155 states and 183 transitions. Second operand has 12 states, 12 states have (on average 4.833333333333333) internal successors, (58), 12 states have internal predecessors, (58), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-02-16 00:04:29,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 00:04:29,648 INFO L93 Difference]: Finished difference Result 203 states and 230 transitions. [2023-02-16 00:04:29,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-02-16 00:04:29,648 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.833333333333333) internal successors, (58), 12 states have internal predecessors, (58), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 64 [2023-02-16 00:04:29,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 00:04:29,652 INFO L225 Difference]: With dead ends: 203 [2023-02-16 00:04:29,653 INFO L226 Difference]: Without dead ends: 158 [2023-02-16 00:04:29,654 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 112 SyntacticMatches, 4 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=151, Invalid=355, Unknown=0, NotChecked=0, Total=506 [2023-02-16 00:04:29,655 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 83 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 187 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-16 00:04:29,657 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 123 Invalid, 215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 187 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-16 00:04:29,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2023-02-16 00:04:29,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 145. [2023-02-16 00:04:29,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 130 states have (on average 1.146153846153846) internal successors, (149), 130 states have internal predecessors, (149), 9 states have call successors, (9), 5 states have call predecessors, (9), 5 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-02-16 00:04:29,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 167 transitions. [2023-02-16 00:04:29,697 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 167 transitions. Word has length 64 [2023-02-16 00:04:29,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 00:04:29,698 INFO L495 AbstractCegarLoop]: Abstraction has 145 states and 167 transitions. [2023-02-16 00:04:29,698 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.833333333333333) internal successors, (58), 12 states have internal predecessors, (58), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-02-16 00:04:29,698 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 167 transitions. [2023-02-16 00:04:29,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-02-16 00:04:29,707 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 00:04:29,707 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 00:04:29,714 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-02-16 00:04:29,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-02-16 00:04:29,912 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 00:04:29,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 00:04:29,925 INFO L85 PathProgramCache]: Analyzing trace with hash -188754233, now seen corresponding path program 8 times [2023-02-16 00:04:29,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 00:04:29,925 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040380987] [2023-02-16 00:04:29,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:04:29,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 00:04:29,932 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-16 00:04:29,937 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1449651562] [2023-02-16 00:04:29,938 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-16 00:04:29,938 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 00:04:29,938 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 00:04:29,939 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-16 00:04:29,942 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-02-16 00:04:30,012 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-16 00:04:30,013 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-16 00:04:30,014 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 8 conjunts are in the unsatisfiable core [2023-02-16 00:04:30,015 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 00:04:30,089 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 12 proven. 34 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2023-02-16 00:04:30,089 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 00:04:30,190 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 4 proven. 34 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2023-02-16 00:04:30,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 00:04:30,190 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040380987] [2023-02-16 00:04:30,191 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-16 00:04:30,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1449651562] [2023-02-16 00:04:30,191 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1449651562] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 00:04:30,191 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-16 00:04:30,191 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2023-02-16 00:04:30,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605073365] [2023-02-16 00:04:30,191 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-16 00:04:30,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-02-16 00:04:30,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 00:04:30,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-02-16 00:04:30,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2023-02-16 00:04:30,192 INFO L87 Difference]: Start difference. First operand 145 states and 167 transitions. Second operand has 15 states, 15 states have (on average 3.6) internal successors, (54), 15 states have internal predecessors, (54), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-02-16 00:04:30,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 00:04:30,474 INFO L93 Difference]: Finished difference Result 238 states and 275 transitions. [2023-02-16 00:04:30,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-02-16 00:04:30,475 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.6) internal successors, (54), 15 states have internal predecessors, (54), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 68 [2023-02-16 00:04:30,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 00:04:30,479 INFO L225 Difference]: With dead ends: 238 [2023-02-16 00:04:30,479 INFO L226 Difference]: Without dead ends: 178 [2023-02-16 00:04:30,480 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 120 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=155, Invalid=397, Unknown=0, NotChecked=0, Total=552 [2023-02-16 00:04:30,480 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 63 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-16 00:04:30,493 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 93 Invalid, 221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-16 00:04:30,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2023-02-16 00:04:30,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 154. [2023-02-16 00:04:30,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 139 states have (on average 1.143884892086331) internal successors, (159), 139 states have internal predecessors, (159), 9 states have call successors, (9), 5 states have call predecessors, (9), 5 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-02-16 00:04:30,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 177 transitions. [2023-02-16 00:04:30,535 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 177 transitions. Word has length 68 [2023-02-16 00:04:30,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 00:04:30,536 INFO L495 AbstractCegarLoop]: Abstraction has 154 states and 177 transitions. [2023-02-16 00:04:30,536 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.6) internal successors, (54), 15 states have internal predecessors, (54), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-02-16 00:04:30,536 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 177 transitions. [2023-02-16 00:04:30,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-02-16 00:04:30,536 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 00:04:30,537 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 00:04:30,543 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-02-16 00:04:30,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-02-16 00:04:30,741 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 00:04:30,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 00:04:30,741 INFO L85 PathProgramCache]: Analyzing trace with hash 1359141662, now seen corresponding path program 1 times [2023-02-16 00:04:30,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 00:04:30,742 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744450865] [2023-02-16 00:04:30,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:04:30,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 00:04:30,754 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-16 00:04:30,754 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [737494989] [2023-02-16 00:04:30,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:04:30,754 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 00:04:30,754 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 00:04:30,755 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-16 00:04:30,758 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-02-16 00:04:31,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:04:31,166 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 102 conjunts are in the unsatisfiable core [2023-02-16 00:04:31,169 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 00:04:31,231 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 20 treesize of output 16 [2023-02-16 00:04:31,320 INFO L321 Elim1Store]: treesize reduction 27, result has 32.5 percent of original size [2023-02-16 00:04:31,320 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 1 case distinctions, treesize of input 34 treesize of output 33 [2023-02-16 00:04:31,490 INFO L321 Elim1Store]: treesize reduction 66, result has 20.5 percent of original size [2023-02-16 00:04:31,491 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 2 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 39 [2023-02-16 00:04:31,633 INFO L321 Elim1Store]: treesize reduction 66, result has 20.5 percent of original size [2023-02-16 00:04:31,634 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 44 treesize of output 49 [2023-02-16 00:04:38,891 INFO L321 Elim1Store]: treesize reduction 181, result has 27.3 percent of original size [2023-02-16 00:04:38,891 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 64 treesize of output 100 [2023-02-16 00:04:53,669 INFO L321 Elim1Store]: treesize reduction 401, result has 37.2 percent of original size [2023-02-16 00:04:53,669 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 21 case distinctions, treesize of input 118 treesize of output 289 [2023-02-16 00:05:10,421 WARN L233 SmtUtils]: Spent 6.18s on a formula simplification. DAG size of input: 170 DAG size of output: 143 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2023-02-16 00:05:10,423 INFO L321 Elim1Store]: treesize reduction 87, result has 84.9 percent of original size [2023-02-16 00:05:10,423 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 221 treesize of output 594