./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/list-properties/list_flag-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 26d01a9c Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/list-properties/list_flag-2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4547628201bbb61f481f84914c46868091db8c6a3d0c4d8890951b495ae3c7da --- Real Ultimate output --- This is Ultimate 0.2.2-?-26d01a9 [2023-02-17 22:33:08,562 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-17 22:33:08,564 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-17 22:33:08,595 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-17 22:33:08,595 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-17 22:33:08,597 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-17 22:33:08,599 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-17 22:33:08,600 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-17 22:33:08,602 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-17 22:33:08,605 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-17 22:33:08,606 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-17 22:33:08,608 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-17 22:33:08,608 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-17 22:33:08,609 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-17 22:33:08,610 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-17 22:33:08,611 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-17 22:33:08,612 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-17 22:33:08,613 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-17 22:33:08,614 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-17 22:33:08,617 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-17 22:33:08,618 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-17 22:33:08,618 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-17 22:33:08,619 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-17 22:33:08,620 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-17 22:33:08,625 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-17 22:33:08,626 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-17 22:33:08,626 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-17 22:33:08,627 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-17 22:33:08,627 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-17 22:33:08,628 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-17 22:33:08,628 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-17 22:33:08,628 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-17 22:33:08,629 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-17 22:33:08,630 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-17 22:33:08,631 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-17 22:33:08,631 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-17 22:33:08,632 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-17 22:33:08,632 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-17 22:33:08,632 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-17 22:33:08,633 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-17 22:33:08,634 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-17 22:33:08,635 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-02-17 22:33:08,664 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-17 22:33:08,669 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-17 22:33:08,670 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-17 22:33:08,670 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-17 22:33:08,671 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-17 22:33:08,671 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-17 22:33:08,671 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-17 22:33:08,671 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-17 22:33:08,672 INFO L138 SettingsManager]: * Use SBE=true [2023-02-17 22:33:08,672 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-17 22:33:08,672 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-17 22:33:08,672 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-17 22:33:08,673 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-17 22:33:08,673 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-17 22:33:08,673 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-17 22:33:08,673 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-17 22:33:08,673 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-17 22:33:08,673 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-17 22:33:08,673 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-17 22:33:08,673 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-17 22:33:08,674 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-17 22:33:08,674 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-17 22:33:08,674 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-17 22:33:08,674 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-17 22:33:08,674 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-17 22:33:08,675 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-17 22:33:08,675 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-17 22:33:08,675 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-17 22:33:08,675 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-17 22:33:08,675 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-17 22:33:08,675 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-17 22:33:08,676 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-17 22:33:08,676 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-17 22:33:08,676 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-17 22:33:08,676 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-17 22:33:08,676 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4547628201bbb61f481f84914c46868091db8c6a3d0c4d8890951b495ae3c7da [2023-02-17 22:33:08,869 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-17 22:33:08,881 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-17 22:33:08,883 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-17 22:33:08,884 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-17 22:33:08,884 INFO L275 PluginConnector]: CDTParser initialized [2023-02-17 22:33:08,885 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/list-properties/list_flag-2.i [2023-02-17 22:33:09,799 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-17 22:33:10,029 INFO L351 CDTParser]: Found 1 translation units. [2023-02-17 22:33:10,030 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-properties/list_flag-2.i [2023-02-17 22:33:10,037 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/936a078e8/e4e0b202fad7421c904b368fd89d2b0b/FLAGa616ff2f6 [2023-02-17 22:33:10,404 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/936a078e8/e4e0b202fad7421c904b368fd89d2b0b [2023-02-17 22:33:10,407 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-17 22:33:10,408 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-17 22:33:10,410 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-17 22:33:10,410 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-17 22:33:10,412 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-17 22:33:10,413 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.02 10:33:10" (1/1) ... [2023-02-17 22:33:10,413 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43f5c0e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 10:33:10, skipping insertion in model container [2023-02-17 22:33:10,414 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.02 10:33:10" (1/1) ... [2023-02-17 22:33:10,419 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-17 22:33:10,455 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-17 22:33:10,687 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/list-properties/list_flag-2.i[23375,23388] [2023-02-17 22:33:10,691 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-17 22:33:10,699 INFO L203 MainTranslator]: Completed pre-run [2023-02-17 22:33:10,734 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/list-properties/list_flag-2.i[23375,23388] [2023-02-17 22:33:10,739 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-17 22:33:10,761 INFO L208 MainTranslator]: Completed translation [2023-02-17 22:33:10,761 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 10:33:10 WrapperNode [2023-02-17 22:33:10,762 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-17 22:33:10,762 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-17 22:33:10,763 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-17 22:33:10,763 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-17 22:33:10,767 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 10:33:10" (1/1) ... [2023-02-17 22:33:10,788 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 10:33:10" (1/1) ... [2023-02-17 22:33:10,803 INFO L138 Inliner]: procedures = 124, calls = 20, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 70 [2023-02-17 22:33:10,803 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-17 22:33:10,804 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-17 22:33:10,804 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-17 22:33:10,804 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-17 22:33:10,811 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 10:33:10" (1/1) ... [2023-02-17 22:33:10,811 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 10:33:10" (1/1) ... [2023-02-17 22:33:10,815 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 10:33:10" (1/1) ... [2023-02-17 22:33:10,815 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 10:33:10" (1/1) ... [2023-02-17 22:33:10,820 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 10:33:10" (1/1) ... [2023-02-17 22:33:10,827 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 10:33:10" (1/1) ... [2023-02-17 22:33:10,828 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 10:33:10" (1/1) ... [2023-02-17 22:33:10,829 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 10:33:10" (1/1) ... [2023-02-17 22:33:10,830 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-17 22:33:10,830 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-17 22:33:10,830 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-17 22:33:10,831 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-17 22:33:10,831 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 10:33:10" (1/1) ... [2023-02-17 22:33:10,841 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-17 22:33:10,849 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 22:33:10,861 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) [2023-02-17 22:33:10,863 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 [2023-02-17 22:33:10,889 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2023-02-17 22:33:10,889 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2023-02-17 22:33:10,890 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-02-17 22:33:10,890 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-02-17 22:33:10,890 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-02-17 22:33:10,890 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-17 22:33:10,890 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-02-17 22:33:10,890 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-02-17 22:33:10,890 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-17 22:33:10,890 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-17 22:33:10,890 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-17 22:33:10,957 INFO L235 CfgBuilder]: Building ICFG [2023-02-17 22:33:10,958 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-17 22:33:10,978 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2023-02-17 22:33:11,066 INFO L276 CfgBuilder]: Performing block encoding [2023-02-17 22:33:11,070 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-17 22:33:11,071 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2023-02-17 22:33:11,072 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 10:33:11 BoogieIcfgContainer [2023-02-17 22:33:11,072 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-17 22:33:11,085 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-17 22:33:11,085 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-17 22:33:11,103 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-17 22:33:11,103 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.02 10:33:10" (1/3) ... [2023-02-17 22:33:11,104 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f3ee74c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.02 10:33:11, skipping insertion in model container [2023-02-17 22:33:11,104 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 10:33:10" (2/3) ... [2023-02-17 22:33:11,104 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f3ee74c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.02 10:33:11, skipping insertion in model container [2023-02-17 22:33:11,104 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 10:33:11" (3/3) ... [2023-02-17 22:33:11,105 INFO L112 eAbstractionObserver]: Analyzing ICFG list_flag-2.i [2023-02-17 22:33:11,116 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-17 22:33:11,116 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-02-17 22:33:11,161 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-17 22:33:11,167 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;@ef999e5, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-17 22:33:11,168 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-02-17 22:33:11,171 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 23 states have (on average 1.5217391304347827) internal successors, (35), 25 states have internal predecessors, (35), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 22:33:11,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-02-17 22:33:11,175 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 22:33:11,176 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 22:33:11,176 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 22:33:11,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 22:33:11,180 INFO L85 PathProgramCache]: Analyzing trace with hash 943582971, now seen corresponding path program 1 times [2023-02-17 22:33:11,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 22:33:11,186 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7052571] [2023-02-17 22:33:11,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 22:33:11,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 22:33:11,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 22:33:11,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 22:33:11,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 22:33:11,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7052571] [2023-02-17 22:33:11,344 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [7052571] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 22:33:11,345 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 22:33:11,345 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-17 22:33:11,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375053882] [2023-02-17 22:33:11,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 22:33:11,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-02-17 22:33:11,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 22:33:11,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-02-17 22:33:11,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-17 22:33:11,377 INFO L87 Difference]: Start difference. First operand has 27 states, 23 states have (on average 1.5217391304347827) internal successors, (35), 25 states have internal predecessors, (35), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 22:33:11,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 22:33:11,390 INFO L93 Difference]: Finished difference Result 40 states and 55 transitions. [2023-02-17 22:33:11,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-02-17 22:33:11,391 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2023-02-17 22:33:11,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 22:33:11,395 INFO L225 Difference]: With dead ends: 40 [2023-02-17 22:33:11,395 INFO L226 Difference]: Without dead ends: 20 [2023-02-17 22:33:11,397 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-17 22:33:11,399 INFO L413 NwaCegarLoop]: 33 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, 33 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 [2023-02-17 22:33:11,400 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 22:33:11,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2023-02-17 22:33:11,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2023-02-17 22:33:11,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.263157894736842) internal successors, (24), 19 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 22:33:11,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 24 transitions. [2023-02-17 22:33:11,422 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 24 transitions. Word has length 11 [2023-02-17 22:33:11,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 22:33:11,423 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 24 transitions. [2023-02-17 22:33:11,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 22:33:11,423 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 24 transitions. [2023-02-17 22:33:11,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-02-17 22:33:11,424 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 22:33:11,424 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 22:33:11,424 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-02-17 22:33:11,424 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 22:33:11,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 22:33:11,427 INFO L85 PathProgramCache]: Analyzing trace with hash 267820561, now seen corresponding path program 1 times [2023-02-17 22:33:11,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 22:33:11,427 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764867004] [2023-02-17 22:33:11,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 22:33:11,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 22:33:11,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 22:33:11,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 22:33:11,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 22:33:11,603 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764867004] [2023-02-17 22:33:11,603 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1764867004] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 22:33:11,603 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 22:33:11,603 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-17 22:33:11,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021394743] [2023-02-17 22:33:11,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 22:33:11,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-17 22:33:11,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 22:33:11,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-17 22:33:11,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-17 22:33:11,608 INFO L87 Difference]: Start difference. First operand 20 states and 24 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 22:33:11,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 22:33:11,675 INFO L93 Difference]: Finished difference Result 44 states and 53 transitions. [2023-02-17 22:33:11,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-17 22:33:11,675 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2023-02-17 22:33:11,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 22:33:11,677 INFO L225 Difference]: With dead ends: 44 [2023-02-17 22:33:11,677 INFO L226 Difference]: Without dead ends: 40 [2023-02-17 22:33:11,681 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-02-17 22:33:11,682 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 25 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-17 22:33:11,683 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 57 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-17 22:33:11,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2023-02-17 22:33:11,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 28. [2023-02-17 22:33:11,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.2592592592592593) internal successors, (34), 27 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 22:33:11,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 34 transitions. [2023-02-17 22:33:11,690 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 34 transitions. Word has length 13 [2023-02-17 22:33:11,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 22:33:11,690 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 34 transitions. [2023-02-17 22:33:11,690 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 22:33:11,691 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 34 transitions. [2023-02-17 22:33:11,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-02-17 22:33:11,691 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 22:33:11,697 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 22:33:11,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-02-17 22:33:11,697 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 22:33:11,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 22:33:11,700 INFO L85 PathProgramCache]: Analyzing trace with hash -273802420, now seen corresponding path program 1 times [2023-02-17 22:33:11,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 22:33:11,700 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735082448] [2023-02-17 22:33:11,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 22:33:11,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 22:33:11,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 22:33:11,818 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 22:33:11,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 22:33:11,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735082448] [2023-02-17 22:33:11,819 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1735082448] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 22:33:11,819 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 22:33:11,819 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-17 22:33:11,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114001746] [2023-02-17 22:33:11,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 22:33:11,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-17 22:33:11,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 22:33:11,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-17 22:33:11,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-17 22:33:11,821 INFO L87 Difference]: Start difference. First operand 28 states and 34 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 22:33:11,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 22:33:11,878 INFO L93 Difference]: Finished difference Result 46 states and 54 transitions. [2023-02-17 22:33:11,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-17 22:33:11,879 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2023-02-17 22:33:11,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 22:33:11,880 INFO L225 Difference]: With dead ends: 46 [2023-02-17 22:33:11,880 INFO L226 Difference]: Without dead ends: 38 [2023-02-17 22:33:11,880 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-02-17 22:33:11,881 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 21 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-17 22:33:11,881 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 61 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 22:33:11,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2023-02-17 22:33:11,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 26. [2023-02-17 22:33:11,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 25 states have (on average 1.24) internal successors, (31), 25 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 22:33:11,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 31 transitions. [2023-02-17 22:33:11,884 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 31 transitions. Word has length 15 [2023-02-17 22:33:11,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 22:33:11,884 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 31 transitions. [2023-02-17 22:33:11,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 22:33:11,885 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 31 transitions. [2023-02-17 22:33:11,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-02-17 22:33:11,885 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 22:33:11,885 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 22:33:11,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-02-17 22:33:11,885 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 22:33:11,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 22:33:11,886 INFO L85 PathProgramCache]: Analyzing trace with hash -1517543941, now seen corresponding path program 1 times [2023-02-17 22:33:11,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 22:33:11,886 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589783225] [2023-02-17 22:33:11,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 22:33:11,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 22:33:11,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 22:33:11,974 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 22:33:11,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 22:33:11,974 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589783225] [2023-02-17 22:33:11,975 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [589783225] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 22:33:11,975 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 22:33:11,975 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-17 22:33:11,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799968027] [2023-02-17 22:33:11,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 22:33:11,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-17 22:33:11,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 22:33:11,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-17 22:33:11,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-17 22:33:11,976 INFO L87 Difference]: Start difference. First operand 26 states and 31 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 22:33:12,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 22:33:12,033 INFO L93 Difference]: Finished difference Result 50 states and 57 transitions. [2023-02-17 22:33:12,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-17 22:33:12,035 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2023-02-17 22:33:12,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 22:33:12,036 INFO L225 Difference]: With dead ends: 50 [2023-02-17 22:33:12,036 INFO L226 Difference]: Without dead ends: 40 [2023-02-17 22:33:12,037 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-02-17 22:33:12,038 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 21 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-17 22:33:12,041 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 56 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 22:33:12,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2023-02-17 22:33:12,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 22. [2023-02-17 22:33:12,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.2380952380952381) internal successors, (26), 21 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 22:33:12,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2023-02-17 22:33:12,049 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 15 [2023-02-17 22:33:12,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 22:33:12,049 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions. [2023-02-17 22:33:12,050 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 22:33:12,050 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2023-02-17 22:33:12,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-02-17 22:33:12,051 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 22:33:12,051 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 22:33:12,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-02-17 22:33:12,051 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 22:33:12,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 22:33:12,053 INFO L85 PathProgramCache]: Analyzing trace with hash 1906655974, now seen corresponding path program 1 times [2023-02-17 22:33:12,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 22:33:12,053 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987170964] [2023-02-17 22:33:12,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 22:33:12,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 22:33:12,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 22:33:12,087 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 22:33:12,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 22:33:12,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987170964] [2023-02-17 22:33:12,088 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [987170964] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 22:33:12,088 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 22:33:12,088 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-17 22:33:12,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317415687] [2023-02-17 22:33:12,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 22:33:12,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-17 22:33:12,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 22:33:12,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-17 22:33:12,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-17 22:33:12,090 INFO L87 Difference]: Start difference. First operand 22 states and 26 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 22:33:12,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 22:33:12,106 INFO L93 Difference]: Finished difference Result 50 states and 60 transitions. [2023-02-17 22:33:12,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-17 22:33:12,106 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2023-02-17 22:33:12,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 22:33:12,107 INFO L225 Difference]: With dead ends: 50 [2023-02-17 22:33:12,107 INFO L226 Difference]: Without dead ends: 34 [2023-02-17 22:33:12,108 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-17 22:33:12,111 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 8 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-17 22:33:12,111 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 41 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 22:33:12,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2023-02-17 22:33:12,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 30. [2023-02-17 22:33:12,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 29 states have (on average 1.206896551724138) internal successors, (35), 29 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 22:33:12,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 35 transitions. [2023-02-17 22:33:12,120 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 35 transitions. Word has length 19 [2023-02-17 22:33:12,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 22:33:12,120 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 35 transitions. [2023-02-17 22:33:12,122 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 22:33:12,122 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 35 transitions. [2023-02-17 22:33:12,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-02-17 22:33:12,123 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 22:33:12,123 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 22:33:12,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-02-17 22:33:12,123 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 22:33:12,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 22:33:12,124 INFO L85 PathProgramCache]: Analyzing trace with hash 1462919029, now seen corresponding path program 1 times [2023-02-17 22:33:12,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 22:33:12,124 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876092676] [2023-02-17 22:33:12,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 22:33:12,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 22:33:12,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 22:33:12,338 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 22:33:12,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 22:33:12,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [876092676] [2023-02-17 22:33:12,338 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [876092676] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 22:33:12,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [917708280] [2023-02-17 22:33:12,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 22:33:12,338 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 22:33:12,339 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 22:33:12,341 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) [2023-02-17 22:33:12,342 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-17 22:33:12,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 22:33:12,414 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 31 conjunts are in the unsatisfiable core [2023-02-17 22:33:12,418 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 22:33:12,454 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-02-17 22:33:12,487 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-02-17 22:33:12,507 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 22:33:12,507 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 15 [2023-02-17 22:33:12,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-17 22:33:12,539 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2023-02-17 22:33:12,562 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-02-17 22:33:12,575 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 [2023-02-17 22:33:12,576 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 22:33:12,577 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 22:33:12,661 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 22:33:12,661 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 23 treesize of output 29 [2023-02-17 22:33:12,665 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 22:33:12,665 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 33 [2023-02-17 22:33:12,669 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2023-02-17 22:33:12,703 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 22:33:12,703 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [917708280] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 22:33:12,703 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-17 22:33:12,703 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2023-02-17 22:33:12,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937682951] [2023-02-17 22:33:12,703 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-17 22:33:12,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-02-17 22:33:12,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 22:33:12,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-02-17 22:33:12,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=299, Unknown=5, NotChecked=0, Total=380 [2023-02-17 22:33:12,706 INFO L87 Difference]: Start difference. First operand 30 states and 35 transitions. Second operand has 20 states, 20 states have (on average 2.25) internal successors, (45), 20 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 22:33:12,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 22:33:12,890 INFO L93 Difference]: Finished difference Result 59 states and 67 transitions. [2023-02-17 22:33:12,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-02-17 22:33:12,890 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.25) internal successors, (45), 20 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2023-02-17 22:33:12,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 22:33:12,891 INFO L225 Difference]: With dead ends: 59 [2023-02-17 22:33:12,891 INFO L226 Difference]: Without dead ends: 55 [2023-02-17 22:33:12,891 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=150, Invalid=495, Unknown=5, NotChecked=0, Total=650 [2023-02-17 22:33:12,891 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 124 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 29 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-17 22:33:12,892 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 79 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 135 Invalid, 2 Unknown, 0 Unchecked, 0.1s Time] [2023-02-17 22:33:12,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2023-02-17 22:33:12,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 41. [2023-02-17 22:33:12,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 40 states have (on average 1.2) internal successors, (48), 40 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 22:33:12,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 48 transitions. [2023-02-17 22:33:12,895 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 48 transitions. Word has length 19 [2023-02-17 22:33:12,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 22:33:12,895 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 48 transitions. [2023-02-17 22:33:12,895 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.25) internal successors, (45), 20 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 22:33:12,895 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 48 transitions. [2023-02-17 22:33:12,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-02-17 22:33:12,896 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 22:33:12,896 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 22:33:12,903 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-02-17 22:33:13,100 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,SelfDestructingSolverStorable5 [2023-02-17 22:33:13,101 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 22:33:13,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 22:33:13,101 INFO L85 PathProgramCache]: Analyzing trace with hash 1319849960, now seen corresponding path program 1 times [2023-02-17 22:33:13,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 22:33:13,101 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507432396] [2023-02-17 22:33:13,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 22:33:13,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 22:33:13,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 22:33:13,258 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 22:33:13,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 22:33:13,259 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507432396] [2023-02-17 22:33:13,259 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1507432396] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 22:33:13,259 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [669331584] [2023-02-17 22:33:13,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 22:33:13,259 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 22:33:13,259 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 22:33:13,260 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) [2023-02-17 22:33:13,262 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-02-17 22:33:13,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 22:33:13,329 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 31 conjunts are in the unsatisfiable core [2023-02-17 22:33:13,332 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 22:33:13,336 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-02-17 22:33:13,356 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-02-17 22:33:13,369 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 22:33:13,369 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 15 [2023-02-17 22:33:13,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-17 22:33:13,386 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2023-02-17 22:33:13,402 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-02-17 22:33:13,415 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 [2023-02-17 22:33:13,417 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 22:33:13,417 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 22:33:13,422 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_158 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~p~0#1.base| v_ArrVal_158) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|) 2)) is different from false [2023-02-17 22:33:13,474 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 22:33:13,474 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 23 treesize of output 29 [2023-02-17 22:33:13,477 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 22:33:13,478 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 33 [2023-02-17 22:33:13,482 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2023-02-17 22:33:13,518 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2023-02-17 22:33:13,519 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [669331584] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 22:33:13,519 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-17 22:33:13,519 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2023-02-17 22:33:13,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639986662] [2023-02-17 22:33:13,520 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-17 22:33:13,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-02-17 22:33:13,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 22:33:13,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-02-17 22:33:13,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=269, Unknown=3, NotChecked=34, Total=380 [2023-02-17 22:33:13,522 INFO L87 Difference]: Start difference. First operand 41 states and 48 transitions. Second operand has 20 states, 20 states have (on average 2.25) internal successors, (45), 20 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 22:33:13,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 22:33:13,748 INFO L93 Difference]: Finished difference Result 59 states and 66 transitions. [2023-02-17 22:33:13,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-02-17 22:33:13,749 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.25) internal successors, (45), 20 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2023-02-17 22:33:13,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 22:33:13,749 INFO L225 Difference]: With dead ends: 59 [2023-02-17 22:33:13,749 INFO L226 Difference]: Without dead ends: 55 [2023-02-17 22:33:13,750 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=149, Invalid=452, Unknown=3, NotChecked=46, Total=650 [2023-02-17 22:33:13,750 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 126 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 31 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 41 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-17 22:33:13,750 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 96 Invalid, 252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 175 Invalid, 5 Unknown, 41 Unchecked, 0.2s Time] [2023-02-17 22:33:13,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2023-02-17 22:33:13,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 43. [2023-02-17 22:33:13,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 42 states have (on average 1.1904761904761905) internal successors, (50), 42 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 22:33:13,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 50 transitions. [2023-02-17 22:33:13,754 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 50 transitions. Word has length 19 [2023-02-17 22:33:13,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 22:33:13,754 INFO L495 AbstractCegarLoop]: Abstraction has 43 states and 50 transitions. [2023-02-17 22:33:13,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.25) internal successors, (45), 20 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 22:33:13,755 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 50 transitions. [2023-02-17 22:33:13,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-02-17 22:33:13,755 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 22:33:13,755 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 22:33:13,761 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-02-17 22:33:13,955 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,SelfDestructingSolverStorable6 [2023-02-17 22:33:13,956 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 22:33:13,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 22:33:13,956 INFO L85 PathProgramCache]: Analyzing trace with hash 876113015, now seen corresponding path program 1 times [2023-02-17 22:33:13,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 22:33:13,956 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974639259] [2023-02-17 22:33:13,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 22:33:13,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 22:33:13,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 22:33:13,973 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 22:33:13,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 22:33:13,973 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974639259] [2023-02-17 22:33:13,974 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [974639259] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 22:33:13,974 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 22:33:13,974 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-17 22:33:13,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776752345] [2023-02-17 22:33:13,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 22:33:13,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-17 22:33:13,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 22:33:13,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-17 22:33:13,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-17 22:33:13,975 INFO L87 Difference]: Start difference. First operand 43 states and 50 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 22:33:13,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 22:33:13,981 INFO L93 Difference]: Finished difference Result 53 states and 59 transitions. [2023-02-17 22:33:13,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-17 22:33:13,981 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2023-02-17 22:33:13,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 22:33:13,982 INFO L225 Difference]: With dead ends: 53 [2023-02-17 22:33:13,982 INFO L226 Difference]: Without dead ends: 39 [2023-02-17 22:33:13,982 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-17 22:33:13,982 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 8 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-17 22:33:13,982 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 49 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 22:33:13,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2023-02-17 22:33:13,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 35. [2023-02-17 22:33:13,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 34 states have (on average 1.1470588235294117) internal successors, (39), 34 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 22:33:13,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2023-02-17 22:33:13,985 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 19 [2023-02-17 22:33:13,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 22:33:13,985 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2023-02-17 22:33:13,985 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 22:33:13,986 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2023-02-17 22:33:13,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-02-17 22:33:13,986 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 22:33:13,986 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 22:33:13,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-02-17 22:33:13,986 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 22:33:13,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 22:33:13,986 INFO L85 PathProgramCache]: Analyzing trace with hash 1445257616, now seen corresponding path program 1 times [2023-02-17 22:33:13,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 22:33:13,986 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160443780] [2023-02-17 22:33:13,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 22:33:13,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 22:33:13,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 22:33:14,192 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 22:33:14,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 22:33:14,192 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160443780] [2023-02-17 22:33:14,192 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160443780] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 22:33:14,192 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1911854100] [2023-02-17 22:33:14,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 22:33:14,193 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 22:33:14,193 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 22:33:14,194 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) [2023-02-17 22:33:14,196 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-02-17 22:33:14,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 22:33:14,253 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 38 conjunts are in the unsatisfiable core [2023-02-17 22:33:14,256 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 22:33:14,259 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-02-17 22:33:14,276 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 22:33:14,276 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 15 [2023-02-17 22:33:14,288 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 13 treesize of output 9 [2023-02-17 22:33:14,291 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-02-17 22:33:14,305 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 22:33:14,305 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 64 treesize of output 75 [2023-02-17 22:33:14,309 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 17 [2023-02-17 22:33:14,313 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2023-02-17 22:33:14,327 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 22:33:14,327 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 60 [2023-02-17 22:33:14,330 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2023-02-17 22:33:14,334 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2023-02-17 22:33:14,337 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 [2023-02-17 22:33:14,337 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 22:33:14,337 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 22:33:14,349 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 79 treesize of output 57 [2023-02-17 22:33:14,385 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 22:33:14,387 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 23 [2023-02-17 22:33:14,388 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 22:33:14,389 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 39 [2023-02-17 22:33:14,390 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-02-17 22:33:14,393 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 22:33:14,393 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 23 [2023-02-17 22:33:14,394 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-17 22:33:14,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-17 22:33:14,396 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-02-17 22:33:14,432 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 22:33:14,433 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1911854100] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 22:33:14,433 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-17 22:33:14,433 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2023-02-17 22:33:14,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120825527] [2023-02-17 22:33:14,433 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-17 22:33:14,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-02-17 22:33:14,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 22:33:14,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-02-17 22:33:14,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=250, Unknown=5, NotChecked=0, Total=306 [2023-02-17 22:33:14,436 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand has 18 states, 18 states have (on average 2.7777777777777777) internal successors, (50), 18 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 22:33:14,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 22:33:14,556 INFO L93 Difference]: Finished difference Result 69 states and 76 transitions. [2023-02-17 22:33:14,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-02-17 22:33:14,557 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.7777777777777777) internal successors, (50), 18 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2023-02-17 22:33:14,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 22:33:14,558 INFO L225 Difference]: With dead ends: 69 [2023-02-17 22:33:14,558 INFO L226 Difference]: Without dead ends: 65 [2023-02-17 22:33:14,559 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 32 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=102, Invalid=399, Unknown=5, NotChecked=0, Total=506 [2023-02-17 22:33:14,560 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 90 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-17 22:33:14,560 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 102 Invalid, 196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-17 22:33:14,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2023-02-17 22:33:14,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 53. [2023-02-17 22:33:14,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 52 states have (on average 1.1346153846153846) internal successors, (59), 52 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 22:33:14,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 59 transitions. [2023-02-17 22:33:14,574 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 59 transitions. Word has length 21 [2023-02-17 22:33:14,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 22:33:14,575 INFO L495 AbstractCegarLoop]: Abstraction has 53 states and 59 transitions. [2023-02-17 22:33:14,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.7777777777777777) internal successors, (50), 18 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 22:33:14,575 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 59 transitions. [2023-02-17 22:33:14,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-02-17 22:33:14,576 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 22:33:14,576 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 22:33:14,582 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-02-17 22:33:14,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 22:33:14,783 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 22:33:14,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 22:33:14,783 INFO L85 PathProgramCache]: Analyzing trace with hash 1652508907, now seen corresponding path program 2 times [2023-02-17 22:33:14,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 22:33:14,783 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032028536] [2023-02-17 22:33:14,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 22:33:14,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 22:33:14,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 22:33:14,990 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 22:33:14,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 22:33:14,991 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032028536] [2023-02-17 22:33:14,991 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1032028536] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 22:33:14,991 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [584511469] [2023-02-17 22:33:14,991 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-17 22:33:14,991 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 22:33:14,991 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 22:33:14,992 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) [2023-02-17 22:33:14,994 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-02-17 22:33:15,051 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-17 22:33:15,051 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 22:33:15,052 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 37 conjunts are in the unsatisfiable core [2023-02-17 22:33:15,053 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 22:33:15,055 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-02-17 22:33:15,070 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 22:33:15,070 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 15 [2023-02-17 22:33:15,081 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-02-17 22:33:15,083 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 13 treesize of output 9 [2023-02-17 22:33:15,096 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 22:33:15,097 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 64 treesize of output 75 [2023-02-17 22:33:15,100 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 17 [2023-02-17 22:33:15,102 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2023-02-17 22:33:15,116 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 22:33:15,117 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 60 [2023-02-17 22:33:15,119 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2023-02-17 22:33:15,122 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2023-02-17 22:33:15,142 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 [2023-02-17 22:33:15,150 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 22:33:15,151 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 22:33:15,190 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 30 [2023-02-17 22:33:15,192 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse0 (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4))) (and (forall ((v_ArrVal_284 (Array Int Int))) (= (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~p~0#1.base| v_ArrVal_284) |c_ULTIMATE.start_main_~a~0#1.base|) .cse0) |c_ULTIMATE.start_main_~p~0#1.offset|)) (forall ((v_ArrVal_286 (Array Int Int))) (= (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~p~0#1.base| v_ArrVal_286) |c_ULTIMATE.start_main_~a~0#1.base|) .cse0) |c_ULTIMATE.start_main_~p~0#1.base|)))) is different from false [2023-02-17 22:33:15,198 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 22:33:15,199 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 23 [2023-02-17 22:33:15,200 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 22:33:15,201 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 35 [2023-02-17 22:33:15,203 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-02-17 22:33:15,208 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 22:33:15,208 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 23 [2023-02-17 22:33:15,209 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-17 22:33:15,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-17 22:33:15,212 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 1 [2023-02-17 22:33:15,248 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2023-02-17 22:33:15,249 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [584511469] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 22:33:15,249 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-17 22:33:15,249 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 22 [2023-02-17 22:33:15,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881714301] [2023-02-17 22:33:15,249 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-17 22:33:15,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-02-17 22:33:15,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 22:33:15,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-02-17 22:33:15,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=362, Unknown=1, NotChecked=38, Total=462 [2023-02-17 22:33:15,250 INFO L87 Difference]: Start difference. First operand 53 states and 59 transitions. Second operand has 22 states, 22 states have (on average 2.5454545454545454) internal successors, (56), 22 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 22:33:15,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 22:33:15,492 INFO L93 Difference]: Finished difference Result 71 states and 77 transitions. [2023-02-17 22:33:15,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-02-17 22:33:15,493 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.5454545454545454) internal successors, (56), 22 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2023-02-17 22:33:15,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 22:33:15,493 INFO L225 Difference]: With dead ends: 71 [2023-02-17 22:33:15,493 INFO L226 Difference]: Without dead ends: 59 [2023-02-17 22:33:15,493 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 32 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 1 IntricatePredicates, 1 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=174, Invalid=759, Unknown=1, NotChecked=58, Total=992 [2023-02-17 22:33:15,494 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 155 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 286 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 360 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 45 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-17 22:33:15,494 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [155 Valid, 152 Invalid, 360 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 286 Invalid, 0 Unknown, 45 Unchecked, 0.1s Time] [2023-02-17 22:33:15,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2023-02-17 22:33:15,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 49. [2023-02-17 22:33:15,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 48 states have (on average 1.125) internal successors, (54), 48 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 22:33:15,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 54 transitions. [2023-02-17 22:33:15,497 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 54 transitions. Word has length 23 [2023-02-17 22:33:15,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 22:33:15,497 INFO L495 AbstractCegarLoop]: Abstraction has 49 states and 54 transitions. [2023-02-17 22:33:15,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 2.5454545454545454) internal successors, (56), 22 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 22:33:15,498 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 54 transitions. [2023-02-17 22:33:15,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-02-17 22:33:15,498 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 22:33:15,498 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 22:33:15,502 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-02-17 22:33:15,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 22:33:15,702 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 22:33:15,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 22:33:15,703 INFO L85 PathProgramCache]: Analyzing trace with hash 1313154078, now seen corresponding path program 1 times [2023-02-17 22:33:15,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 22:33:15,703 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696600604] [2023-02-17 22:33:15,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 22:33:15,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 22:33:15,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 22:33:15,867 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 22:33:15,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 22:33:15,867 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696600604] [2023-02-17 22:33:15,867 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1696600604] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 22:33:15,867 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [968964282] [2023-02-17 22:33:15,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 22:33:15,867 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 22:33:15,867 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 22:33:15,868 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) [2023-02-17 22:33:15,870 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-02-17 22:33:15,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 22:33:15,926 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 37 conjunts are in the unsatisfiable core [2023-02-17 22:33:15,927 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 22:33:15,929 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-02-17 22:33:15,943 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 22:33:15,943 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 15 [2023-02-17 22:33:15,954 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 13 treesize of output 9 [2023-02-17 22:33:15,957 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-02-17 22:33:15,984 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 22:33:15,985 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 64 treesize of output 75 [2023-02-17 22:33:15,987 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 17 [2023-02-17 22:33:15,990 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2023-02-17 22:33:16,003 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 22:33:16,004 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 60 [2023-02-17 22:33:16,008 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2023-02-17 22:33:16,012 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2023-02-17 22:33:16,023 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 [2023-02-17 22:33:16,032 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 22:33:16,032 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 22:33:16,068 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 52 treesize of output 30 [2023-02-17 22:33:16,070 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse0 (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4))) (and (forall ((v_ArrVal_336 (Array Int Int))) (= (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~p~0#1.base| v_ArrVal_336) |c_ULTIMATE.start_main_~a~0#1.base|) .cse0) |c_ULTIMATE.start_main_~p~0#1.offset|)) (forall ((v_ArrVal_338 (Array Int Int))) (= |c_ULTIMATE.start_main_~p~0#1.base| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~p~0#1.base| v_ArrVal_338) |c_ULTIMATE.start_main_~a~0#1.base|) .cse0))))) is different from false [2023-02-17 22:33:16,074 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 22:33:16,074 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 23 [2023-02-17 22:33:16,076 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 22:33:16,076 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 35 [2023-02-17 22:33:16,078 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-02-17 22:33:16,082 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 22:33:16,082 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 23 [2023-02-17 22:33:16,083 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-17 22:33:16,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-17 22:33:16,085 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 1 [2023-02-17 22:33:16,128 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2023-02-17 22:33:16,128 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [968964282] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 22:33:16,128 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-17 22:33:16,128 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 22 [2023-02-17 22:33:16,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708309927] [2023-02-17 22:33:16,128 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-17 22:33:16,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-02-17 22:33:16,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 22:33:16,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-02-17 22:33:16,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=362, Unknown=1, NotChecked=38, Total=462 [2023-02-17 22:33:16,129 INFO L87 Difference]: Start difference. First operand 49 states and 54 transitions. Second operand has 22 states, 22 states have (on average 2.5454545454545454) internal successors, (56), 22 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 22:33:16,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 22:33:16,329 INFO L93 Difference]: Finished difference Result 65 states and 70 transitions. [2023-02-17 22:33:16,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-02-17 22:33:16,330 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.5454545454545454) internal successors, (56), 22 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2023-02-17 22:33:16,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 22:33:16,330 INFO L225 Difference]: With dead ends: 65 [2023-02-17 22:33:16,330 INFO L226 Difference]: Without dead ends: 53 [2023-02-17 22:33:16,331 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 32 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 1 IntricatePredicates, 1 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=174, Invalid=759, Unknown=1, NotChecked=58, Total=992 [2023-02-17 22:33:16,331 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 125 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 187 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 38 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-17 22:33:16,331 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 128 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 187 Invalid, 0 Unknown, 38 Unchecked, 0.1s Time] [2023-02-17 22:33:16,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2023-02-17 22:33:16,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 45. [2023-02-17 22:33:16,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 44 states have (on average 1.1136363636363635) internal successors, (49), 44 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 22:33:16,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 49 transitions. [2023-02-17 22:33:16,334 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 49 transitions. Word has length 23 [2023-02-17 22:33:16,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 22:33:16,334 INFO L495 AbstractCegarLoop]: Abstraction has 45 states and 49 transitions. [2023-02-17 22:33:16,334 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 2.5454545454545454) internal successors, (56), 22 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 22:33:16,334 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 49 transitions. [2023-02-17 22:33:16,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-02-17 22:33:16,335 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 22:33:16,335 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 22:33:16,341 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-02-17 22:33:16,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-02-17 22:33:16,539 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 22:33:16,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 22:33:16,540 INFO L85 PathProgramCache]: Analyzing trace with hash 1574953317, now seen corresponding path program 3 times [2023-02-17 22:33:16,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 22:33:16,540 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41011309] [2023-02-17 22:33:16,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 22:33:16,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 22:33:16,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 22:33:16,863 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 22:33:16,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 22:33:16,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41011309] [2023-02-17 22:33:16,863 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [41011309] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 22:33:16,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1876963865] [2023-02-17 22:33:16,863 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-17 22:33:16,863 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 22:33:16,863 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 22:33:16,864 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) [2023-02-17 22:33:16,871 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-02-17 22:33:16,940 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-02-17 22:33:16,940 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 22:33:16,942 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 66 conjunts are in the unsatisfiable core [2023-02-17 22:33:16,945 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 22:33:16,947 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-02-17 22:33:16,953 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 22:33:16,953 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 15 [2023-02-17 22:33:16,966 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 13 treesize of output 9 [2023-02-17 22:33:16,971 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-02-17 22:33:16,985 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-02-17 22:33:16,986 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 22:33:16,987 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 25 treesize of output 39 [2023-02-17 22:33:16,990 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-02-17 22:33:16,993 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 22:33:16,993 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 26 treesize of output 40 [2023-02-17 22:33:16,996 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2023-02-17 22:33:17,033 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 22:33:17,033 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 182 treesize of output 177 [2023-02-17 22:33:17,044 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 28 [2023-02-17 22:33:17,048 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 73 treesize of output 59 [2023-02-17 22:33:17,052 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-02-17 22:33:17,055 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 19 [2023-02-17 22:33:17,087 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 22:33:17,087 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 253 treesize of output 269 [2023-02-17 22:33:17,092 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 22:33:17,092 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 202 treesize of output 294 [2023-02-17 22:33:17,098 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 22:33:17,098 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 246 treesize of output 237 [2023-02-17 22:33:17,120 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 150 treesize of output 110 [2023-02-17 22:33:17,128 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-02-17 22:33:17,138 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-02-17 22:33:17,143 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 310 treesize of output 250 [2023-02-17 22:33:17,145 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-02-17 22:33:17,150 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 22:33:17,150 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 120 treesize of output 124 [2023-02-17 22:33:17,216 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1270 treesize of output 926 [2023-02-17 22:33:17,278 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1273 treesize of output 929 [2023-02-17 22:33:17,418 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1280 treesize of output 932 [2023-02-17 22:33:31,629 INFO L217 Elim1Store]: Index analysis took 125 ms [2023-02-17 22:33:45,828 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 22:33:51,485 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1106 select indices, 1106 select index equivalence classes, 0 disjoint index pairs (out of 611065 index pairs), introduced 1167 new quantified variables, introduced 611065 case distinctions, treesize of input 86289 treesize of output 4959294