./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/forester-heap/sll-simple-white-blue-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ff03de63 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/forester-heap/sll-simple-white-blue-1.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 b63900034700ff8018e29578512f73f88317ae4b603a38b2f2f558c77b57812d --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ff03de6 [2021-12-21 12:08:30,809 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-21 12:08:30,811 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-21 12:08:30,853 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-21 12:08:30,854 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-21 12:08:30,856 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-21 12:08:30,857 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-21 12:08:30,859 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-21 12:08:30,860 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-21 12:08:30,864 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-21 12:08:30,864 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-21 12:08:30,865 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-21 12:08:30,865 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-21 12:08:30,867 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-21 12:08:30,868 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-21 12:08:30,870 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-21 12:08:30,871 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-21 12:08:30,872 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-21 12:08:30,873 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-21 12:08:30,877 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-21 12:08:30,878 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-21 12:08:30,879 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-21 12:08:30,880 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-21 12:08:30,880 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-21 12:08:30,885 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-21 12:08:30,885 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-21 12:08:30,885 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-21 12:08:30,886 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-21 12:08:30,886 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-21 12:08:30,887 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-21 12:08:30,887 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-21 12:08:30,888 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-21 12:08:30,890 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-21 12:08:30,890 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-21 12:08:30,891 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-21 12:08:30,891 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-21 12:08:30,892 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-21 12:08:30,892 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-21 12:08:30,892 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-21 12:08:30,892 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-21 12:08:30,893 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-21 12:08:30,894 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-21 12:08:30,912 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-21 12:08:30,912 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-21 12:08:30,913 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-21 12:08:30,913 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-21 12:08:30,913 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-21 12:08:30,913 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-21 12:08:30,914 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-21 12:08:30,914 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-21 12:08:30,914 INFO L138 SettingsManager]: * Use SBE=true [2021-12-21 12:08:30,914 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-21 12:08:30,915 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-21 12:08:30,915 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-21 12:08:30,915 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-21 12:08:30,916 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-21 12:08:30,916 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-21 12:08:30,916 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-21 12:08:30,916 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-21 12:08:30,916 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-21 12:08:30,916 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-21 12:08:30,916 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-21 12:08:30,916 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-21 12:08:30,917 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-21 12:08:30,917 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-21 12:08:30,917 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-21 12:08:30,917 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 12:08:30,917 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-21 12:08:30,917 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-21 12:08:30,917 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-21 12:08:30,918 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-21 12:08:30,918 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-21 12:08:30,918 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-21 12:08:30,918 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-21 12:08:30,918 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-21 12:08:30,918 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-21 12:08:30,918 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b63900034700ff8018e29578512f73f88317ae4b603a38b2f2f558c77b57812d [2021-12-21 12:08:31,124 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-21 12:08:31,139 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-21 12:08:31,148 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-21 12:08:31,149 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-21 12:08:31,149 INFO L275 PluginConnector]: CDTParser initialized [2021-12-21 12:08:31,150 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/forester-heap/sll-simple-white-blue-1.i [2021-12-21 12:08:31,193 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7e1bacf92/bc328e45f4ff4f33ac78ddc08b9e76b5/FLAG2c5a29d30 [2021-12-21 12:08:31,607 INFO L306 CDTParser]: Found 1 translation units. [2021-12-21 12:08:31,607 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-simple-white-blue-1.i [2021-12-21 12:08:31,623 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7e1bacf92/bc328e45f4ff4f33ac78ddc08b9e76b5/FLAG2c5a29d30 [2021-12-21 12:08:31,633 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7e1bacf92/bc328e45f4ff4f33ac78ddc08b9e76b5 [2021-12-21 12:08:31,635 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-21 12:08:31,636 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-21 12:08:31,637 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-21 12:08:31,637 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-21 12:08:31,639 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-21 12:08:31,639 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 12:08:31" (1/1) ... [2021-12-21 12:08:31,640 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58e94de7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:08:31, skipping insertion in model container [2021-12-21 12:08:31,640 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 12:08:31" (1/1) ... [2021-12-21 12:08:31,644 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-21 12:08:31,672 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-21 12:08:31,869 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-simple-white-blue-1.i[22605,22618] [2021-12-21 12:08:31,878 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 12:08:31,885 INFO L203 MainTranslator]: Completed pre-run [2021-12-21 12:08:31,935 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-simple-white-blue-1.i[22605,22618] [2021-12-21 12:08:31,937 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 12:08:31,958 INFO L208 MainTranslator]: Completed translation [2021-12-21 12:08:31,959 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:08:31 WrapperNode [2021-12-21 12:08:31,959 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-21 12:08:31,960 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-21 12:08:31,960 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-21 12:08:31,961 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-21 12:08:31,965 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:08:31" (1/1) ... [2021-12-21 12:08:31,987 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:08:31" (1/1) ... [2021-12-21 12:08:32,006 INFO L137 Inliner]: procedures = 119, calls = 31, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 108 [2021-12-21 12:08:32,006 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-21 12:08:32,007 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-21 12:08:32,007 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-21 12:08:32,007 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-21 12:08:32,012 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:08:31" (1/1) ... [2021-12-21 12:08:32,013 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:08:31" (1/1) ... [2021-12-21 12:08:32,019 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:08:31" (1/1) ... [2021-12-21 12:08:32,019 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:08:31" (1/1) ... [2021-12-21 12:08:32,026 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:08:31" (1/1) ... [2021-12-21 12:08:32,029 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:08:31" (1/1) ... [2021-12-21 12:08:32,030 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:08:31" (1/1) ... [2021-12-21 12:08:32,031 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-21 12:08:32,032 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-21 12:08:32,032 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-21 12:08:32,032 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-21 12:08:32,034 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:08:31" (1/1) ... [2021-12-21 12:08:32,044 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 12:08:32,054 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 12:08:32,064 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) [2021-12-21 12:08:32,067 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 [2021-12-21 12:08:32,096 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-21 12:08:32,096 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-21 12:08:32,097 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-21 12:08:32,097 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-21 12:08:32,097 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-21 12:08:32,097 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-21 12:08:32,100 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-21 12:08:32,100 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-21 12:08:32,100 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-21 12:08:32,100 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-21 12:08:32,166 INFO L234 CfgBuilder]: Building ICFG [2021-12-21 12:08:32,168 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-21 12:08:32,344 INFO L275 CfgBuilder]: Performing block encoding [2021-12-21 12:08:32,350 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-21 12:08:32,350 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-12-21 12:08:32,351 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 12:08:32 BoogieIcfgContainer [2021-12-21 12:08:32,351 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-21 12:08:32,352 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-21 12:08:32,352 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-21 12:08:32,356 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-21 12:08:32,356 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 12:08:31" (1/3) ... [2021-12-21 12:08:32,356 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7471a4f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 12:08:32, skipping insertion in model container [2021-12-21 12:08:32,357 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 12:08:31" (2/3) ... [2021-12-21 12:08:32,357 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7471a4f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 12:08:32, skipping insertion in model container [2021-12-21 12:08:32,357 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 12:08:32" (3/3) ... [2021-12-21 12:08:32,358 INFO L111 eAbstractionObserver]: Analyzing ICFG sll-simple-white-blue-1.i [2021-12-21 12:08:32,361 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-21 12:08:32,361 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-21 12:08:32,389 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-21 12:08:32,393 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-12-21 12:08:32,393 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-21 12:08:32,401 INFO L276 IsEmpty]: Start isEmpty. Operand has 26 states, 24 states have (on average 1.7083333333333333) internal successors, (41), 25 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 12:08:32,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-12-21 12:08:32,404 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 12:08:32,404 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 12:08:32,405 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 12:08:32,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 12:08:32,408 INFO L85 PathProgramCache]: Analyzing trace with hash -1041580535, now seen corresponding path program 1 times [2021-12-21 12:08:32,414 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 12:08:32,414 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317504204] [2021-12-21 12:08:32,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:08:32,415 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 12:08:32,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:08:32,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 12:08:32,551 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 12:08:32,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317504204] [2021-12-21 12:08:32,552 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [317504204] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 12:08:32,552 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 12:08:32,552 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-21 12:08:32,553 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502404797] [2021-12-21 12:08:32,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 12:08:32,556 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-21 12:08:32,556 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 12:08:32,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-21 12:08:32,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-21 12:08:32,576 INFO L87 Difference]: Start difference. First operand has 26 states, 24 states have (on average 1.7083333333333333) internal successors, (41), 25 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) 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) [2021-12-21 12:08:32,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 12:08:32,589 INFO L93 Difference]: Finished difference Result 47 states and 74 transitions. [2021-12-21 12:08:32,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-21 12:08:32,590 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 [2021-12-21 12:08:32,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 12:08:32,596 INFO L225 Difference]: With dead ends: 47 [2021-12-21 12:08:32,596 INFO L226 Difference]: Without dead ends: 19 [2021-12-21 12:08:32,598 INFO L932 BasicCegarLoop]: 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 [2021-12-21 12:08:32,601 INFO L933 BasicCegarLoop]: 31 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, 31 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 [2021-12-21 12:08:32,601 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 12:08:32,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-12-21 12:08:32,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2021-12-21 12:08:32,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 18 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) [2021-12-21 12:08:32,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 24 transitions. [2021-12-21 12:08:32,623 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 24 transitions. Word has length 11 [2021-12-21 12:08:32,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 12:08:32,624 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 24 transitions. [2021-12-21 12:08:32,624 INFO L471 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) [2021-12-21 12:08:32,624 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 24 transitions. [2021-12-21 12:08:32,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-12-21 12:08:32,625 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 12:08:32,625 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 12:08:32,625 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-21 12:08:32,626 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 12:08:32,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 12:08:32,627 INFO L85 PathProgramCache]: Analyzing trace with hash -1993200173, now seen corresponding path program 1 times [2021-12-21 12:08:32,627 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 12:08:32,627 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32100521] [2021-12-21 12:08:32,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:08:32,628 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 12:08:32,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:08:32,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 12:08:32,803 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 12:08:32,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32100521] [2021-12-21 12:08:32,804 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [32100521] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 12:08:32,804 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 12:08:32,804 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 12:08:32,804 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937181515] [2021-12-21 12:08:32,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 12:08:32,805 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 12:08:32,806 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 12:08:32,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 12:08:32,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-21 12:08:32,807 INFO L87 Difference]: Start difference. First operand 19 states and 24 transitions. Second operand has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 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) [2021-12-21 12:08:32,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 12:08:32,962 INFO L93 Difference]: Finished difference Result 51 states and 65 transitions. [2021-12-21 12:08:32,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-21 12:08:32,963 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 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 [2021-12-21 12:08:32,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 12:08:32,964 INFO L225 Difference]: With dead ends: 51 [2021-12-21 12:08:32,965 INFO L226 Difference]: Without dead ends: 49 [2021-12-21 12:08:32,965 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2021-12-21 12:08:32,966 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 36 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 12:08:32,966 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [36 Valid, 63 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-21 12:08:32,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2021-12-21 12:08:32,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 29. [2021-12-21 12:08:32,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 28 states have (on average 1.3214285714285714) internal successors, (37), 28 states have internal predecessors, (37), 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) [2021-12-21 12:08:32,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 37 transitions. [2021-12-21 12:08:32,971 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 37 transitions. Word has length 13 [2021-12-21 12:08:32,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 12:08:32,972 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 37 transitions. [2021-12-21 12:08:32,972 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 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) [2021-12-21 12:08:32,972 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 37 transitions. [2021-12-21 12:08:32,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-12-21 12:08:32,973 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 12:08:32,973 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 12:08:32,973 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-21 12:08:32,973 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 12:08:32,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 12:08:32,974 INFO L85 PathProgramCache]: Analyzing trace with hash 1593175992, now seen corresponding path program 1 times [2021-12-21 12:08:32,974 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 12:08:32,974 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187865557] [2021-12-21 12:08:32,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:08:32,974 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 12:08:32,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:08:33,081 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 12:08:33,082 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 12:08:33,082 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187865557] [2021-12-21 12:08:33,082 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1187865557] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 12:08:33,082 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [999735396] [2021-12-21 12:08:33,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:08:33,083 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 12:08:33,083 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 12:08:33,084 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) [2021-12-21 12:08:33,085 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-21 12:08:33,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:08:33,146 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 44 conjunts are in the unsatisfiable core [2021-12-21 12:08:33,151 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 12:08:33,213 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 12:08:33,215 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 17 [2021-12-21 12:08:33,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 12:08:33,228 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 17 [2021-12-21 12:08:33,237 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-21 12:08:33,349 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2021-12-21 12:08:33,353 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2021-12-21 12:08:33,359 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 12:08:33,360 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-12-21 12:08:33,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 12:08:33,370 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-12-21 12:08:33,378 INFO L353 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2021-12-21 12:08:33,379 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2021-12-21 12:08:33,571 INFO L353 Elim1Store]: treesize reduction 17, result has 15.0 percent of original size [2021-12-21 12:08:33,572 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 61 treesize of output 35 [2021-12-21 12:08:33,581 INFO L353 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-12-21 12:08:33,582 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 16 [2021-12-21 12:08:33,589 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 12:08:33,590 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 12:08:33,635 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-21 12:08:33,636 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 31 [2021-12-21 12:08:33,640 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-21 12:08:33,641 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 28 [2021-12-21 12:08:33,657 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2021-12-21 12:08:33,687 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2021-12-21 12:08:33,711 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2021-12-21 12:08:33,740 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2021-12-21 12:08:33,753 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~head~0#1.base_10| Int) (v_arrayElimArr_4 (Array Int Int)) (v_arrayElimArr_3 (Array Int Int))) (or (not (= (select v_arrayElimArr_3 0) |c_ULTIMATE.start_main_~head~0#1.base|)) (and (= (select (select (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_main_~head~0#1.base_10| v_arrayElimArr_4) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|) 0) (= (select (select (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_main_~head~0#1.base_10| v_arrayElimArr_3) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|) 0)) (not (= (select |c_#valid| |v_ULTIMATE.start_main_~head~0#1.base_10|) 0)) (not (= |c_ULTIMATE.start_main_~head~0#1.offset| (select v_arrayElimArr_4 0))))) is different from false [2021-12-21 12:08:33,779 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2021-12-21 12:08:33,796 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2021-12-21 12:08:33,816 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2021-12-21 12:08:33,844 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2021-12-21 12:08:33,892 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2021-12-21 12:08:33,914 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2021-12-21 12:08:33,935 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2021-12-21 12:08:33,960 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2021-12-21 12:08:33,983 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2021-12-21 12:08:33,998 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2021-12-21 12:08:34,029 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2021-12-21 12:08:34,055 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2021-12-21 12:08:34,081 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 12:08:34,082 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [999735396] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-21 12:08:34,082 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-21 12:08:34,082 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2021-12-21 12:08:34,082 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423294546] [2021-12-21 12:08:34,083 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-21 12:08:34,084 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-21 12:08:34,084 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 12:08:34,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-21 12:08:34,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=88, Unknown=1, NotChecked=18, Total=132 [2021-12-21 12:08:34,086 INFO L87 Difference]: Start difference. First operand 29 states and 37 transitions. Second operand has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 12 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) [2021-12-21 12:08:34,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 12:08:34,366 INFO L93 Difference]: Finished difference Result 69 states and 87 transitions. [2021-12-21 12:08:34,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-21 12:08:34,367 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 12 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) Word has length 15 [2021-12-21 12:08:34,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 12:08:34,368 INFO L225 Difference]: With dead ends: 69 [2021-12-21 12:08:34,368 INFO L226 Difference]: Without dead ends: 55 [2021-12-21 12:08:34,368 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=58, Invalid=217, Unknown=1, NotChecked=30, Total=306 [2021-12-21 12:08:34,369 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 79 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 73 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-21 12:08:34,369 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [79 Valid, 140 Invalid, 266 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 155 Invalid, 0 Unknown, 73 Unchecked, 0.2s Time] [2021-12-21 12:08:34,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2021-12-21 12:08:34,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 36. [2021-12-21 12:08:34,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 35 states have (on average 1.3428571428571427) internal successors, (47), 35 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 12:08:34,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 47 transitions. [2021-12-21 12:08:34,374 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 47 transitions. Word has length 15 [2021-12-21 12:08:34,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 12:08:34,374 INFO L470 AbstractCegarLoop]: Abstraction has 36 states and 47 transitions. [2021-12-21 12:08:34,374 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 12 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) [2021-12-21 12:08:34,374 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 47 transitions. [2021-12-21 12:08:34,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-12-21 12:08:34,375 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 12:08:34,375 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 12:08:34,393 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-12-21 12:08:34,576 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 12:08:34,576 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 12:08:34,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 12:08:34,577 INFO L85 PathProgramCache]: Analyzing trace with hash 522680462, now seen corresponding path program 1 times [2021-12-21 12:08:34,577 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 12:08:34,577 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187891419] [2021-12-21 12:08:34,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:08:34,577 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 12:08:34,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:08:34,747 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 12:08:34,747 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 12:08:34,747 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187891419] [2021-12-21 12:08:34,747 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1187891419] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 12:08:34,748 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1069803059] [2021-12-21 12:08:34,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:08:34,748 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 12:08:34,748 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 12:08:34,749 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) [2021-12-21 12:08:34,757 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-21 12:08:34,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:08:34,827 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 49 conjunts are in the unsatisfiable core [2021-12-21 12:08:34,832 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 12:08:34,842 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-21 12:08:34,850 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-21 12:08:34,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 12:08:34,895 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 26 [2021-12-21 12:08:34,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 12:08:34,903 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-12-21 12:08:34,916 INFO L353 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-12-21 12:08:34,916 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-12-21 12:08:35,002 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-21 12:08:35,010 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-21 12:08:35,021 INFO L353 Elim1Store]: treesize reduction 8, result has 61.9 percent of original size [2021-12-21 12:08:35,022 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 22 [2021-12-21 12:08:35,033 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2021-12-21 12:08:35,098 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2021-12-21 12:08:35,103 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-12-21 12:08:35,120 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-12-21 12:08:35,129 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 12:08:35,130 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 12:08:35,168 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~head~0#1.base_13| Int) (v_ArrVal_220 (Array Int Int))) (or (not (= (select (select (store |c_#memory_int| |v_ULTIMATE.start_main_~head~0#1.base_13| v_ArrVal_220) |c_ULTIMATE.start_main_~head~0#1.base|) (+ |c_ULTIMATE.start_main_~head~0#1.offset| 4)) 1)) (not (= (select |c_#valid| |v_ULTIMATE.start_main_~head~0#1.base_13|) 0)))) is different from false [2021-12-21 12:08:35,277 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2021-12-21 12:08:35,278 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1069803059] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-21 12:08:35,279 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-21 12:08:35,279 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 18 [2021-12-21 12:08:35,279 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122060908] [2021-12-21 12:08:35,279 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-21 12:08:35,279 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-12-21 12:08:35,279 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 12:08:35,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-12-21 12:08:35,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=228, Unknown=1, NotChecked=30, Total=306 [2021-12-21 12:08:35,281 INFO L87 Difference]: Start difference. First operand 36 states and 47 transitions. Second operand has 18 states, 18 states have (on average 2.1666666666666665) internal successors, (39), 18 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) [2021-12-21 12:08:35,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 12:08:35,544 INFO L93 Difference]: Finished difference Result 89 states and 113 transitions. [2021-12-21 12:08:35,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-21 12:08:35,545 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.1666666666666665) internal successors, (39), 18 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-12-21 12:08:35,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 12:08:35,546 INFO L225 Difference]: With dead ends: 89 [2021-12-21 12:08:35,546 INFO L226 Difference]: Without dead ends: 87 [2021-12-21 12:08:35,546 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=110, Invalid=493, Unknown=1, NotChecked=46, Total=650 [2021-12-21 12:08:35,547 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 91 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 173 SdHoareTripleChecker+Invalid, 287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 77 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 12:08:35,547 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [91 Valid, 173 Invalid, 287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 171 Invalid, 0 Unknown, 77 Unchecked, 0.1s Time] [2021-12-21 12:08:35,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2021-12-21 12:08:35,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 48. [2021-12-21 12:08:35,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 47 states have (on average 1.3404255319148937) internal successors, (63), 47 states have internal predecessors, (63), 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) [2021-12-21 12:08:35,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 63 transitions. [2021-12-21 12:08:35,553 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 63 transitions. Word has length 15 [2021-12-21 12:08:35,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 12:08:35,554 INFO L470 AbstractCegarLoop]: Abstraction has 48 states and 63 transitions. [2021-12-21 12:08:35,554 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.1666666666666665) internal successors, (39), 18 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) [2021-12-21 12:08:35,554 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 63 transitions. [2021-12-21 12:08:35,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-12-21 12:08:35,555 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 12:08:35,555 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 12:08:35,576 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-21 12:08:35,762 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2021-12-21 12:08:35,762 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 12:08:35,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 12:08:35,763 INFO L85 PathProgramCache]: Analyzing trace with hash 195432482, now seen corresponding path program 1 times [2021-12-21 12:08:35,763 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 12:08:35,763 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734198521] [2021-12-21 12:08:35,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:08:35,763 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 12:08:35,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:08:35,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 12:08:35,840 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 12:08:35,841 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734198521] [2021-12-21 12:08:35,841 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [734198521] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 12:08:35,841 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 12:08:35,841 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-21 12:08:35,841 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329266877] [2021-12-21 12:08:35,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 12:08:35,842 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-21 12:08:35,842 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 12:08:35,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-21 12:08:35,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-12-21 12:08:35,843 INFO L87 Difference]: Start difference. First operand 48 states and 63 transitions. Second operand has 8 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 12:08:35,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 12:08:35,946 INFO L93 Difference]: Finished difference Result 88 states and 112 transitions. [2021-12-21 12:08:35,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-21 12:08:35,946 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-12-21 12:08:35,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 12:08:35,947 INFO L225 Difference]: With dead ends: 88 [2021-12-21 12:08:35,947 INFO L226 Difference]: Without dead ends: 65 [2021-12-21 12:08:35,947 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-12-21 12:08:35,948 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 37 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 12:08:35,948 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [37 Valid, 74 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-21 12:08:35,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2021-12-21 12:08:35,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 46. [2021-12-21 12:08:35,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 45 states have (on average 1.288888888888889) internal successors, (58), 45 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 12:08:35,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 58 transitions. [2021-12-21 12:08:35,952 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 58 transitions. Word has length 16 [2021-12-21 12:08:35,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 12:08:35,952 INFO L470 AbstractCegarLoop]: Abstraction has 46 states and 58 transitions. [2021-12-21 12:08:35,952 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 12:08:35,952 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 58 transitions. [2021-12-21 12:08:35,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-12-21 12:08:35,953 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 12:08:35,953 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 12:08:35,953 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-21 12:08:35,953 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 12:08:35,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 12:08:35,953 INFO L85 PathProgramCache]: Analyzing trace with hash -758068131, now seen corresponding path program 2 times [2021-12-21 12:08:35,953 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 12:08:35,953 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448388266] [2021-12-21 12:08:35,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:08:35,953 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 12:08:35,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:08:36,006 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-21 12:08:36,007 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 12:08:36,007 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448388266] [2021-12-21 12:08:36,007 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1448388266] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 12:08:36,007 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 12:08:36,007 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-21 12:08:36,007 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078961552] [2021-12-21 12:08:36,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 12:08:36,008 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-21 12:08:36,008 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 12:08:36,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-21 12:08:36,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-21 12:08:36,008 INFO L87 Difference]: Start difference. First operand 46 states and 58 transitions. Second operand has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 12:08:36,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 12:08:36,068 INFO L93 Difference]: Finished difference Result 65 states and 79 transitions. [2021-12-21 12:08:36,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-21 12:08:36,069 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-12-21 12:08:36,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 12:08:36,069 INFO L225 Difference]: With dead ends: 65 [2021-12-21 12:08:36,069 INFO L226 Difference]: Without dead ends: 52 [2021-12-21 12:08:36,070 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-21 12:08:36,071 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 25 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 12:08:36,072 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [25 Valid, 59 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 12:08:36,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-12-21 12:08:36,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 46. [2021-12-21 12:08:36,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 45 states have (on average 1.2444444444444445) internal successors, (56), 45 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) [2021-12-21 12:08:36,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 56 transitions. [2021-12-21 12:08:36,086 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 56 transitions. Word has length 17 [2021-12-21 12:08:36,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 12:08:36,086 INFO L470 AbstractCegarLoop]: Abstraction has 46 states and 56 transitions. [2021-12-21 12:08:36,086 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 12:08:36,086 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 56 transitions. [2021-12-21 12:08:36,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-12-21 12:08:36,087 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 12:08:36,097 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 12:08:36,097 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-21 12:08:36,097 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 12:08:36,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 12:08:36,098 INFO L85 PathProgramCache]: Analyzing trace with hash 335182407, now seen corresponding path program 1 times [2021-12-21 12:08:36,098 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 12:08:36,098 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354667763] [2021-12-21 12:08:36,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:08:36,099 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 12:08:36,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:08:36,157 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 12:08:36,157 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 12:08:36,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354667763] [2021-12-21 12:08:36,158 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [354667763] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 12:08:36,158 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 12:08:36,158 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-21 12:08:36,158 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995553433] [2021-12-21 12:08:36,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 12:08:36,158 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-21 12:08:36,158 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 12:08:36,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-21 12:08:36,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-21 12:08:36,159 INFO L87 Difference]: Start difference. First operand 46 states and 56 transitions. Second operand has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 12:08:36,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 12:08:36,229 INFO L93 Difference]: Finished difference Result 68 states and 82 transitions. [2021-12-21 12:08:36,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-21 12:08:36,229 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-12-21 12:08:36,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 12:08:36,230 INFO L225 Difference]: With dead ends: 68 [2021-12-21 12:08:36,230 INFO L226 Difference]: Without dead ends: 52 [2021-12-21 12:08:36,230 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-12-21 12:08:36,230 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 16 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 12:08:36,231 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 57 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 12:08:36,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-12-21 12:08:36,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 40. [2021-12-21 12:08:36,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 39 states have (on average 1.2564102564102564) internal successors, (49), 39 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) [2021-12-21 12:08:36,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 49 transitions. [2021-12-21 12:08:36,233 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 49 transitions. Word has length 18 [2021-12-21 12:08:36,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 12:08:36,234 INFO L470 AbstractCegarLoop]: Abstraction has 40 states and 49 transitions. [2021-12-21 12:08:36,234 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 12:08:36,234 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 49 transitions. [2021-12-21 12:08:36,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-12-21 12:08:36,234 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 12:08:36,234 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 12:08:36,234 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-21 12:08:36,234 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 12:08:36,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 12:08:36,235 INFO L85 PathProgramCache]: Analyzing trace with hash 1935253853, now seen corresponding path program 1 times [2021-12-21 12:08:36,235 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 12:08:36,235 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108592791] [2021-12-21 12:08:36,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:08:36,235 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 12:08:36,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:08:36,429 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 12:08:36,429 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 12:08:36,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108592791] [2021-12-21 12:08:36,429 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1108592791] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 12:08:36,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [41909473] [2021-12-21 12:08:36,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:08:36,430 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 12:08:36,430 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 12:08:36,431 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) [2021-12-21 12:08:36,432 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-21 12:08:36,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:08:36,503 INFO L263 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 68 conjunts are in the unsatisfiable core [2021-12-21 12:08:36,511 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 12:08:36,523 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-21 12:08:36,559 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 14 [2021-12-21 12:08:36,568 INFO L353 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-21 12:08:36,569 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 70 treesize of output 65 [2021-12-21 12:08:36,574 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 18 [2021-12-21 12:08:36,578 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 12:08:36,578 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2021-12-21 12:08:36,584 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 23 [2021-12-21 12:08:36,597 INFO L353 Elim1Store]: treesize reduction 26, result has 35.0 percent of original size [2021-12-21 12:08:36,597 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 25 treesize of output 29 [2021-12-21 12:08:36,681 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2021-12-21 12:08:36,685 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2021-12-21 12:08:36,689 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 12:08:36,690 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-12-21 12:08:36,694 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 12:08:36,694 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 37 [2021-12-21 12:08:36,698 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 12:08:36,702 INFO L353 Elim1Store]: treesize reduction 4, result has 75.0 percent of original size [2021-12-21 12:08:36,703 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 22 [2021-12-21 12:08:36,706 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 24 [2021-12-21 12:08:36,884 INFO L353 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-12-21 12:08:36,885 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 85 treesize of output 47 [2021-12-21 12:08:36,891 INFO L353 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-12-21 12:08:36,892 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 16 [2021-12-21 12:08:36,911 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-12-21 12:08:36,923 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 12:08:36,924 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 12:08:37,002 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-21 12:08:37,002 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 37 [2021-12-21 12:08:37,006 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-21 12:08:37,007 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 34 [2021-12-21 12:08:37,035 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_arrayElimArr_11 (Array Int Int)) (v_arrayElimArr_10 (Array Int Int)) (|v_ULTIMATE.start_main_~head~0#1.base_16| Int) (v_ArrVal_419 (Array Int Int))) (or (not (= (select (select (store |c_#memory_int| |v_ULTIMATE.start_main_~head~0#1.base_16| v_ArrVal_419) (select (select (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_main_~head~0#1.base_16| v_arrayElimArr_10) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|)) (+ (select (select (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_main_~head~0#1.base_16| v_arrayElimArr_11) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|) 4)) 1)) (not (= (select v_arrayElimArr_10 0) |c_ULTIMATE.start_main_~head~0#1.base|)) (not (= |c_ULTIMATE.start_main_~head~0#1.offset| (select v_arrayElimArr_11 0))) (not (= 0 (select |c_#valid| |v_ULTIMATE.start_main_~head~0#1.base_16|))))) is different from false [2021-12-21 12:08:37,145 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-21 12:08:37,146 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 60 treesize of output 61 [2021-12-21 12:08:37,158 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-21 12:08:37,159 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 578 treesize of output 445 [2021-12-21 12:08:37,168 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-21 12:08:37,168 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 418 treesize of output 363 [2021-12-21 12:08:37,187 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-21 12:08:37,187 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 354 treesize of output 283 [2021-12-21 12:08:37,215 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-21 12:08:37,215 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 863 treesize of output 838 [2021-12-21 12:08:37,561 INFO L353 Elim1Store]: treesize reduction 420, result has 42.9 percent of original size [2021-12-21 12:08:37,561 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 1455 treesize of output 1478 [2021-12-21 12:08:37,616 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1268 treesize of output 1234 [2021-12-21 12:08:37,648 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1250 treesize of output 1200 [2021-12-21 12:08:37,676 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-21 12:08:37,677 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1218 treesize of output 1174 [2021-12-21 12:08:37,720 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-21 12:08:37,721 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1184 treesize of output 1108 [2021-12-21 12:08:37,785 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-21 12:08:37,785 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 1014 treesize of output 923 [2021-12-21 12:09:21,204 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2021-12-21 12:09:21,209 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [41909473] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-21 12:09:21,209 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-21 12:09:21,209 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 22 [2021-12-21 12:09:21,209 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312237727] [2021-12-21 12:09:21,209 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-21 12:09:21,210 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-12-21 12:09:21,210 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 12:09:21,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-12-21 12:09:21,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=370, Unknown=1, NotChecked=38, Total=462 [2021-12-21 12:09:21,211 INFO L87 Difference]: Start difference. First operand 40 states and 49 transitions. Second operand has 22 states, 22 states have (on average 2.227272727272727) internal successors, (49), 22 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) [2021-12-21 12:09:21,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 12:09:21,920 INFO L93 Difference]: Finished difference Result 71 states and 85 transitions. [2021-12-21 12:09:21,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-21 12:09:21,922 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.227272727272727) internal successors, (49), 22 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) Word has length 18 [2021-12-21 12:09:21,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 12:09:21,922 INFO L225 Difference]: With dead ends: 71 [2021-12-21 12:09:21,922 INFO L226 Difference]: Without dead ends: 69 [2021-12-21 12:09:21,923 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 31 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 178 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=153, Invalid=841, Unknown=2, NotChecked=60, Total=1056 [2021-12-21 12:09:21,923 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 119 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 255 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 192 SdHoareTripleChecker+Invalid, 396 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 84 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-21 12:09:21,924 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [119 Valid, 192 Invalid, 396 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 255 Invalid, 0 Unknown, 84 Unchecked, 0.3s Time] [2021-12-21 12:09:21,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2021-12-21 12:09:21,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 50. [2021-12-21 12:09:21,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 49 states have (on average 1.2244897959183674) internal successors, (60), 49 states have internal predecessors, (60), 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) [2021-12-21 12:09:21,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 60 transitions. [2021-12-21 12:09:21,929 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 60 transitions. Word has length 18 [2021-12-21 12:09:21,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 12:09:21,929 INFO L470 AbstractCegarLoop]: Abstraction has 50 states and 60 transitions. [2021-12-21 12:09:21,930 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 2.227272727272727) internal successors, (49), 22 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) [2021-12-21 12:09:21,930 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 60 transitions. [2021-12-21 12:09:21,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-12-21 12:09:21,930 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 12:09:21,930 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 12:09:21,957 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-12-21 12:09:22,143 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 12:09:22,144 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 12:09:22,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 12:09:22,144 INFO L85 PathProgramCache]: Analyzing trace with hash -1115654716, now seen corresponding path program 2 times [2021-12-21 12:09:22,144 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 12:09:22,144 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664617054] [2021-12-21 12:09:22,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:09:22,145 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 12:09:22,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:09:22,275 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 12:09:22,275 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 12:09:22,275 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664617054] [2021-12-21 12:09:22,275 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1664617054] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 12:09:22,276 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [51695898] [2021-12-21 12:09:22,276 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-21 12:09:22,276 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 12:09:22,276 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 12:09:22,277 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) [2021-12-21 12:09:22,278 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-21 12:09:22,394 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-21 12:09:22,394 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-21 12:09:22,397 INFO L263 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 57 conjunts are in the unsatisfiable core [2021-12-21 12:09:22,400 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 12:09:22,413 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-21 12:09:22,417 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-21 12:09:22,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 12:09:22,470 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 26 [2021-12-21 12:09:22,480 INFO L353 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-21 12:09:22,481 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 22 [2021-12-21 12:09:22,484 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-12-21 12:09:22,504 INFO L353 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-12-21 12:09:22,505 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-12-21 12:09:22,564 INFO L353 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-12-21 12:09:22,565 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-12-21 12:09:22,582 INFO L353 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-21 12:09:22,582 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 27 [2021-12-21 12:09:22,614 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 12:09:22,624 INFO L353 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-21 12:09:22,624 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 27 [2021-12-21 12:09:22,640 INFO L353 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-12-21 12:09:22,640 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 17 treesize of output 21 [2021-12-21 12:09:22,699 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-21 12:09:22,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 12:09:22,703 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2021-12-21 12:09:22,710 INFO L353 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2021-12-21 12:09:22,710 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2021-12-21 12:09:22,715 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-21 12:09:22,777 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2021-12-21 12:09:22,780 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-12-21 12:09:22,804 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-12-21 12:09:22,816 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-21 12:09:22,817 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 12:09:22,842 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_628 (Array Int Int)) (|v_ULTIMATE.start_main_~head~0#1.base_19| Int)) (or (not (= (select |c_#valid| |v_ULTIMATE.start_main_~head~0#1.base_19|) 0)) (not (= (select (select (store |c_#memory_int| |v_ULTIMATE.start_main_~head~0#1.base_19| v_ArrVal_628) |c_ULTIMATE.start_main_~head~0#1.base|) (+ |c_ULTIMATE.start_main_~head~0#1.offset| 4)) 1)))) is different from false [2021-12-21 12:09:23,519 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 6 not checked. [2021-12-21 12:09:23,519 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [51695898] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-21 12:09:23,519 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-21 12:09:23,520 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 10] total 21 [2021-12-21 12:09:23,520 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606612286] [2021-12-21 12:09:23,520 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-21 12:09:23,521 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-12-21 12:09:23,521 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 12:09:23,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-12-21 12:09:23,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=303, Unknown=12, NotChecked=36, Total=420 [2021-12-21 12:09:23,522 INFO L87 Difference]: Start difference. First operand 50 states and 60 transitions. Second operand has 21 states, 21 states have (on average 2.1904761904761907) internal successors, (46), 21 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 12:09:23,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 12:09:23,794 INFO L93 Difference]: Finished difference Result 76 states and 89 transitions. [2021-12-21 12:09:23,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-21 12:09:23,799 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.1904761904761907) internal successors, (46), 21 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-12-21 12:09:23,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 12:09:23,800 INFO L225 Difference]: With dead ends: 76 [2021-12-21 12:09:23,800 INFO L226 Difference]: Without dead ends: 74 [2021-12-21 12:09:23,800 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 27 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=138, Invalid=556, Unknown=12, NotChecked=50, Total=756 [2021-12-21 12:09:23,801 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 89 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 75 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 12:09:23,801 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [89 Valid, 133 Invalid, 292 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 176 Invalid, 0 Unknown, 75 Unchecked, 0.1s Time] [2021-12-21 12:09:23,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2021-12-21 12:09:23,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 38. [2021-12-21 12:09:23,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 37 states have (on average 1.1891891891891893) internal successors, (44), 37 states have internal predecessors, (44), 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) [2021-12-21 12:09:23,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 44 transitions. [2021-12-21 12:09:23,806 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 44 transitions. Word has length 19 [2021-12-21 12:09:23,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 12:09:23,806 INFO L470 AbstractCegarLoop]: Abstraction has 38 states and 44 transitions. [2021-12-21 12:09:23,806 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.1904761904761907) internal successors, (46), 21 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 12:09:23,806 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 44 transitions. [2021-12-21 12:09:23,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-12-21 12:09:23,807 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 12:09:23,807 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 12:09:23,827 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-12-21 12:09:24,007 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 12:09:24,008 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 12:09:24,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 12:09:24,008 INFO L85 PathProgramCache]: Analyzing trace with hash 1819578926, now seen corresponding path program 2 times [2021-12-21 12:09:24,008 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 12:09:24,008 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765567125] [2021-12-21 12:09:24,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:09:24,008 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 12:09:24,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:09:24,120 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 12:09:24,120 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 12:09:24,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765567125] [2021-12-21 12:09:24,120 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1765567125] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 12:09:24,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [471604106] [2021-12-21 12:09:24,120 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-21 12:09:24,120 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 12:09:24,120 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 12:09:24,121 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) [2021-12-21 12:09:24,122 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-21 12:09:24,204 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-21 12:09:24,204 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-21 12:09:24,205 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 67 conjunts are in the unsatisfiable core [2021-12-21 12:09:24,208 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 12:09:24,215 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-21 12:09:24,249 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 17 [2021-12-21 12:09:24,252 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 17 [2021-12-21 12:09:24,262 INFO L353 Elim1Store]: treesize reduction 18, result has 21.7 percent of original size [2021-12-21 12:09:24,262 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 45 [2021-12-21 12:09:24,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 12:09:24,265 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 23 [2021-12-21 12:09:24,268 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2021-12-21 12:09:24,279 INFO L353 Elim1Store]: treesize reduction 26, result has 35.0 percent of original size [2021-12-21 12:09:24,279 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 25 treesize of output 29 [2021-12-21 12:09:24,282 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2021-12-21 12:09:24,357 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2021-12-21 12:09:24,360 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2021-12-21 12:09:24,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 12:09:24,368 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 12:09:24,368 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 34 [2021-12-21 12:09:24,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 12:09:24,377 INFO L353 Elim1Store]: treesize reduction 25, result has 16.7 percent of original size [2021-12-21 12:09:24,377 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 56 treesize of output 52 [2021-12-21 12:09:24,380 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 12:09:24,383 INFO L353 Elim1Store]: treesize reduction 4, result has 75.0 percent of original size [2021-12-21 12:09:24,384 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 22 [2021-12-21 12:09:24,659 INFO L353 Elim1Store]: treesize reduction 85, result has 11.5 percent of original size [2021-12-21 12:09:24,659 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 9 new quantified variables, introduced 10 case distinctions, treesize of input 132 treesize of output 74 [2021-12-21 12:09:24,663 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Unexpected substitution problem. [2021-12-21 12:09:24,663 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-12-21 12:09:24,664 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-12-21 12:09:24,664 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627332010] [2021-12-21 12:09:24,664 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-12-21 12:09:24,664 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-21 12:09:24,664 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 12:09:24,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-21 12:09:24,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2021-12-21 12:09:24,664 INFO L87 Difference]: Start difference. First operand 38 states and 44 transitions. Second operand has 9 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 9 states have internal predecessors, (21), 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) [2021-12-21 12:09:24,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 12:09:24,924 INFO L93 Difference]: Finished difference Result 80 states and 95 transitions. [2021-12-21 12:09:24,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-21 12:09:24,924 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 9 states have internal predecessors, (21), 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 [2021-12-21 12:09:24,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 12:09:24,925 INFO L225 Difference]: With dead ends: 80 [2021-12-21 12:09:24,925 INFO L226 Difference]: Without dead ends: 64 [2021-12-21 12:09:24,925 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=67, Invalid=439, Unknown=0, NotChecked=0, Total=506 [2021-12-21 12:09:24,925 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 47 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-21 12:09:24,926 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 129 Invalid, 192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 168 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-21 12:09:24,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-12-21 12:09:24,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 42. [2021-12-21 12:09:24,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 41 states have (on average 1.1951219512195121) internal successors, (49), 41 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) [2021-12-21 12:09:24,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2021-12-21 12:09:24,929 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 21 [2021-12-21 12:09:24,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 12:09:24,929 INFO L470 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2021-12-21 12:09:24,929 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 9 states have internal predecessors, (21), 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) [2021-12-21 12:09:24,929 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2021-12-21 12:09:24,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-12-21 12:09:24,929 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 12:09:24,929 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 12:09:24,953 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-12-21 12:09:25,143 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-12-21 12:09:25,143 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 12:09:25,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 12:09:25,144 INFO L85 PathProgramCache]: Analyzing trace with hash 1153238054, now seen corresponding path program 1 times [2021-12-21 12:09:25,144 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 12:09:25,144 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869279492] [2021-12-21 12:09:25,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:09:25,144 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 12:09:25,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:09:25,279 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 12:09:25,279 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 12:09:25,279 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869279492] [2021-12-21 12:09:25,279 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1869279492] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 12:09:25,279 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [534820643] [2021-12-21 12:09:25,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:09:25,280 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 12:09:25,280 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 12:09:25,281 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) [2021-12-21 12:09:25,311 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-21 12:09:25,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:09:25,449 INFO L263 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 44 conjunts are in the unsatisfiable core [2021-12-21 12:09:25,452 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 12:09:25,464 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-21 12:09:25,468 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-21 12:09:25,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 12:09:25,492 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 26 [2021-12-21 12:09:25,496 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 14 [2021-12-21 12:09:25,505 INFO L353 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-21 12:09:25,505 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 31 [2021-12-21 12:09:25,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 12:09:25,511 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 22 [2021-12-21 12:09:25,516 INFO L353 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2021-12-21 12:09:25,516 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2021-12-21 12:09:25,592 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2021-12-21 12:09:25,617 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-12-21 12:09:25,642 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-12-21 12:09:25,650 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 12:09:25,650 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 12:09:25,694 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_860 (Array Int Int))) (not (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~x~0#1.base| v_ArrVal_860) |c_ULTIMATE.start_main_~head~0#1.base|) (+ |c_ULTIMATE.start_main_~head~0#1.offset| 4)) 1))) is different from false [2021-12-21 12:09:25,716 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_860 (Array Int Int))) (not (= 1 (select (select (store |c_#memory_int| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset|) v_ArrVal_860) |c_ULTIMATE.start_main_~head~0#1.base|) (+ |c_ULTIMATE.start_main_~head~0#1.offset| 4))))) is different from false [2021-12-21 12:09:25,728 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_860 (Array Int Int))) (not (= (select (select (store |c_#memory_int| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|) v_ArrVal_860) |c_ULTIMATE.start_main_~head~0#1.base|) (+ |c_ULTIMATE.start_main_~head~0#1.offset| 4)) 1))) is different from false [2021-12-21 12:09:25,746 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-21 12:09:25,747 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 40 [2021-12-21 12:09:25,755 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-21 12:09:25,755 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 91 treesize of output 78 [2021-12-21 12:09:25,758 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 58 [2021-12-21 12:09:26,115 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 4 not checked. [2021-12-21 12:09:26,116 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [534820643] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-21 12:09:26,116 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-21 12:09:26,116 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2021-12-21 12:09:26,117 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234250367] [2021-12-21 12:09:26,117 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-21 12:09:26,117 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-12-21 12:09:26,117 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 12:09:26,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-12-21 12:09:26,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=162, Unknown=3, NotChecked=84, Total=306 [2021-12-21 12:09:26,119 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand has 18 states, 18 states have (on average 2.388888888888889) internal successors, (43), 18 states have internal predecessors, (43), 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) [2021-12-21 12:09:26,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 12:09:26,294 INFO L93 Difference]: Finished difference Result 64 states and 77 transitions. [2021-12-21 12:09:26,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-21 12:09:26,294 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.388888888888889) internal successors, (43), 18 states have internal predecessors, (43), 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 [2021-12-21 12:09:26,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 12:09:26,295 INFO L225 Difference]: With dead ends: 64 [2021-12-21 12:09:26,295 INFO L226 Difference]: Without dead ends: 58 [2021-12-21 12:09:26,295 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 33 SyntacticMatches, 3 SemanticMatches, 21 ConstructedPredicates, 3 IntricatePredicates, 1 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=100, Invalid=289, Unknown=3, NotChecked=114, Total=506 [2021-12-21 12:09:26,296 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 53 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 125 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 12:09:26,296 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [53 Valid, 137 Invalid, 230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 91 Invalid, 0 Unknown, 125 Unchecked, 0.1s Time] [2021-12-21 12:09:26,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2021-12-21 12:09:26,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 52. [2021-12-21 12:09:26,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 51 states have (on average 1.2156862745098038) internal successors, (62), 51 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 12:09:26,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 62 transitions. [2021-12-21 12:09:26,301 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 62 transitions. Word has length 21 [2021-12-21 12:09:26,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 12:09:26,302 INFO L470 AbstractCegarLoop]: Abstraction has 52 states and 62 transitions. [2021-12-21 12:09:26,302 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.388888888888889) internal successors, (43), 18 states have internal predecessors, (43), 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) [2021-12-21 12:09:26,302 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 62 transitions. [2021-12-21 12:09:26,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-12-21 12:09:26,302 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 12:09:26,303 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 12:09:26,349 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-12-21 12:09:26,503 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 12:09:26,503 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 12:09:26,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 12:09:26,504 INFO L85 PathProgramCache]: Analyzing trace with hash 336963434, now seen corresponding path program 1 times [2021-12-21 12:09:26,504 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 12:09:26,504 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137872616] [2021-12-21 12:09:26,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:09:26,504 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 12:09:26,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:09:26,650 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 12:09:26,651 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 12:09:26,651 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137872616] [2021-12-21 12:09:26,651 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1137872616] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 12:09:26,651 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1838035477] [2021-12-21 12:09:26,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 12:09:26,651 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 12:09:26,652 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 12:09:26,653 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 12:09:26,654 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-21 12:09:26,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 12:09:26,762 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 62 conjunts are in the unsatisfiable core [2021-12-21 12:09:26,765 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 12:09:26,787 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-21 12:09:26,823 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 17 [2021-12-21 12:09:26,835 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 21 [2021-12-21 12:09:26,844 INFO L353 Elim1Store]: treesize reduction 18, result has 21.7 percent of original size [2021-12-21 12:09:26,845 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 37 [2021-12-21 12:09:26,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 12:09:26,857 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 23 [2021-12-21 12:09:26,861 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2021-12-21 12:09:26,868 INFO L353 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2021-12-21 12:09:26,869 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2021-12-21 12:09:26,872 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2021-12-21 12:09:27,021 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 30 [2021-12-21 12:09:27,030 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-12-21 12:09:27,037 INFO L353 Elim1Store]: treesize reduction 28, result has 15.2 percent of original size [2021-12-21 12:09:27,038 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 44 treesize of output 41 [2021-12-21 12:09:27,040 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 27 [2021-12-21 12:09:27,043 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 8 treesize of output 7 [2021-12-21 12:09:27,048 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2021-12-21 12:09:27,154 INFO L353 Elim1Store]: treesize reduction 17, result has 15.0 percent of original size [2021-12-21 12:09:27,155 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 61 treesize of output 35 [2021-12-21 12:09:27,160 INFO L353 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-12-21 12:09:27,160 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 16 [2021-12-21 12:09:27,165 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 12:09:27,165 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 12:09:27,208 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-21 12:09:27,209 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 42 [2021-12-21 12:09:27,211 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-21 12:09:27,212 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 35 [2021-12-21 12:09:27,232 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-21 12:09:27,232 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 49 [2021-12-21 12:09:27,235 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-21 12:09:27,235 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 35 [2021-12-21 12:09:27,387 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 21 [2021-12-21 12:09:27,392 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 21 [2021-12-21 12:09:27,467 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-21 12:09:27,468 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 139 treesize of output 124 [2021-12-21 12:09:27,472 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-21 12:09:27,473 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 124 treesize of output 108 [2021-12-21 12:09:27,488 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-21 12:09:27,489 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 229 treesize of output 258 [2021-12-21 12:09:27,520 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-21 12:09:27,520 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 535 treesize of output 570 [2021-12-21 12:09:27,541 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-21 12:09:27,541 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 695 treesize of output 700 [2021-12-21 12:09:27,576 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-21 12:09:27,576 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 789 treesize of output 771 [2021-12-21 12:09:27,617 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-21 12:09:27,618 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 574 treesize of output 540 [2021-12-21 12:09:27,661 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-21 12:09:27,662 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 519 treesize of output 533