./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-tiling/mbpr4.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f4b24e32 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/array-tiling/mbpr4.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash d3770c63a87ff983494c9353997301d9eb30588c650f83b67bcf55f325443055 --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-13 10:08:19,795 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 10:08:19,807 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 10:08:19,837 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 10:08:19,838 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 10:08:19,839 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 10:08:19,840 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 10:08:19,841 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 10:08:19,842 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 10:08:19,842 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 10:08:19,843 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 10:08:19,844 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 10:08:19,845 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 10:08:19,847 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 10:08:19,848 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 10:08:19,850 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 10:08:19,850 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 10:08:19,851 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 10:08:19,856 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 10:08:19,862 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 10:08:19,863 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 10:08:19,866 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 10:08:19,867 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 10:08:19,868 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 10:08:19,868 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 10:08:19,870 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 10:08:19,871 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 10:08:19,871 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 10:08:19,875 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 10:08:19,876 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 10:08:19,876 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 10:08:19,877 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 10:08:19,878 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 10:08:19,878 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 10:08:19,879 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 10:08:19,880 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 10:08:19,880 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 10:08:19,880 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 10:08:19,880 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 10:08:19,881 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 10:08:19,881 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 10:08:19,882 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 10:08:19,884 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-13 10:08:19,913 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 10:08:19,914 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 10:08:19,914 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 10:08:19,914 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 10:08:19,915 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 10:08:19,915 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 10:08:19,915 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 10:08:19,915 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 10:08:19,915 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 10:08:19,916 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 10:08:19,916 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 10:08:19,916 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 10:08:19,917 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 10:08:19,917 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 10:08:19,917 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 10:08:19,917 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 10:08:19,917 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 10:08:19,917 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 10:08:19,917 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 10:08:19,918 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 10:08:19,918 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 10:08:19,918 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 10:08:19,918 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 10:08:19,919 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 10:08:19,919 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 10:08:19,919 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 10:08:19,920 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 10:08:19,920 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 10:08:19,920 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 10:08:19,920 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 10:08:19,920 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 10:08:19,920 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 10:08:19,921 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 10:08:19,921 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d3770c63a87ff983494c9353997301d9eb30588c650f83b67bcf55f325443055 [2022-07-13 10:08:20,097 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 10:08:20,122 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 10:08:20,124 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 10:08:20,125 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 10:08:20,125 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 10:08:20,126 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-tiling/mbpr4.c [2022-07-13 10:08:20,164 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5be740f80/6c644f66cd3c411f98d3f9d2a2ef04bb/FLAGf35161a75 [2022-07-13 10:08:20,509 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 10:08:20,509 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-tiling/mbpr4.c [2022-07-13 10:08:20,513 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5be740f80/6c644f66cd3c411f98d3f9d2a2ef04bb/FLAGf35161a75 [2022-07-13 10:08:20,521 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5be740f80/6c644f66cd3c411f98d3f9d2a2ef04bb [2022-07-13 10:08:20,522 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 10:08:20,523 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 10:08:20,527 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 10:08:20,527 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 10:08:20,529 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 10:08:20,530 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 10:08:20" (1/1) ... [2022-07-13 10:08:20,530 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e5c7184 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:08:20, skipping insertion in model container [2022-07-13 10:08:20,531 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 10:08:20" (1/1) ... [2022-07-13 10:08:20,535 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 10:08:20,548 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 10:08:20,647 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-tiling/mbpr4.c[396,409] [2022-07-13 10:08:20,669 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 10:08:20,685 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 10:08:20,696 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-tiling/mbpr4.c[396,409] [2022-07-13 10:08:20,711 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 10:08:20,720 INFO L208 MainTranslator]: Completed translation [2022-07-13 10:08:20,720 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:08:20 WrapperNode [2022-07-13 10:08:20,720 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 10:08:20,721 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 10:08:20,721 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 10:08:20,721 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 10:08:20,726 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:08:20" (1/1) ... [2022-07-13 10:08:20,731 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:08:20" (1/1) ... [2022-07-13 10:08:20,747 INFO L137 Inliner]: procedures = 15, calls = 46, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 137 [2022-07-13 10:08:20,747 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 10:08:20,748 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 10:08:20,748 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 10:08:20,748 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 10:08:20,753 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:08:20" (1/1) ... [2022-07-13 10:08:20,754 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:08:20" (1/1) ... [2022-07-13 10:08:20,762 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:08:20" (1/1) ... [2022-07-13 10:08:20,762 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:08:20" (1/1) ... [2022-07-13 10:08:20,771 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:08:20" (1/1) ... [2022-07-13 10:08:20,776 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:08:20" (1/1) ... [2022-07-13 10:08:20,780 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:08:20" (1/1) ... [2022-07-13 10:08:20,788 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 10:08:20,789 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 10:08:20,789 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 10:08:20,789 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 10:08:20,790 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:08:20" (1/1) ... [2022-07-13 10:08:20,795 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 10:08:20,804 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 10:08:20,813 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-13 10:08:20,819 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-13 10:08:20,838 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 10:08:20,839 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 10:08:20,839 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-13 10:08:20,839 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-13 10:08:20,839 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 10:08:20,839 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 10:08:20,839 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-13 10:08:20,840 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-13 10:08:20,884 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 10:08:20,885 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 10:08:21,057 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 10:08:21,061 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 10:08:21,062 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2022-07-13 10:08:21,063 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 10:08:21 BoogieIcfgContainer [2022-07-13 10:08:21,063 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 10:08:21,064 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 10:08:21,064 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 10:08:21,079 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 10:08:21,079 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 10:08:20" (1/3) ... [2022-07-13 10:08:21,080 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5937c3b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 10:08:21, skipping insertion in model container [2022-07-13 10:08:21,080 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:08:20" (2/3) ... [2022-07-13 10:08:21,081 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5937c3b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 10:08:21, skipping insertion in model container [2022-07-13 10:08:21,081 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 10:08:21" (3/3) ... [2022-07-13 10:08:21,082 INFO L111 eAbstractionObserver]: Analyzing ICFG mbpr4.c [2022-07-13 10:08:21,095 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 10:08:21,095 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-13 10:08:21,127 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 10:08:21,131 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@4f6dee51, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@c362521 [2022-07-13 10:08:21,132 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-13 10:08:21,135 INFO L276 IsEmpty]: Start isEmpty. Operand has 39 states, 37 states have (on average 1.5405405405405406) internal successors, (57), 38 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 10:08:21,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-07-13 10:08:21,140 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 10:08:21,140 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 10:08:21,140 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 10:08:21,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 10:08:21,144 INFO L85 PathProgramCache]: Analyzing trace with hash -912130766, now seen corresponding path program 1 times [2022-07-13 10:08:21,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 10:08:21,149 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539670368] [2022-07-13 10:08:21,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 10:08:21,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 10:08:21,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 10:08:21,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 10:08:21,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 10:08:21,267 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539670368] [2022-07-13 10:08:21,267 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1539670368] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 10:08:21,267 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 10:08:21,267 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-13 10:08:21,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040691733] [2022-07-13 10:08:21,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 10:08:21,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-13 10:08:21,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 10:08:21,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-13 10:08:21,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-13 10:08:21,304 INFO L87 Difference]: Start difference. First operand has 39 states, 37 states have (on average 1.5405405405405406) internal successors, (57), 38 states have internal predecessors, (57), 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 9.5) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 10:08:21,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 10:08:21,316 INFO L93 Difference]: Finished difference Result 73 states and 106 transitions. [2022-07-13 10:08:21,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-13 10:08:21,318 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-07-13 10:08:21,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 10:08:21,322 INFO L225 Difference]: With dead ends: 73 [2022-07-13 10:08:21,322 INFO L226 Difference]: Without dead ends: 34 [2022-07-13 10:08:21,324 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-13 10:08:21,326 INFO L413 NwaCegarLoop]: 50 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, 50 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 10:08:21,327 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 10:08:21,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2022-07-13 10:08:21,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2022-07-13 10:08:21,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 33 states have (on average 1.303030303030303) internal successors, (43), 33 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) [2022-07-13 10:08:21,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 43 transitions. [2022-07-13 10:08:21,349 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 43 transitions. Word has length 19 [2022-07-13 10:08:21,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 10:08:21,349 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 43 transitions. [2022-07-13 10:08:21,350 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 10:08:21,350 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 43 transitions. [2022-07-13 10:08:21,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-07-13 10:08:21,351 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 10:08:21,352 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 10:08:21,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-13 10:08:21,352 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 10:08:21,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 10:08:21,353 INFO L85 PathProgramCache]: Analyzing trace with hash 560162573, now seen corresponding path program 1 times [2022-07-13 10:08:21,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 10:08:21,353 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287703868] [2022-07-13 10:08:21,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 10:08:21,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 10:08:21,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 10:08:21,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 10:08:21,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 10:08:21,459 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287703868] [2022-07-13 10:08:21,459 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1287703868] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 10:08:21,459 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 10:08:21,459 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 10:08:21,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726574967] [2022-07-13 10:08:21,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 10:08:21,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 10:08:21,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 10:08:21,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 10:08:21,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 10:08:21,463 INFO L87 Difference]: Start difference. First operand 34 states and 43 transitions. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 10:08:21,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 10:08:21,497 INFO L93 Difference]: Finished difference Result 43 states and 53 transitions. [2022-07-13 10:08:21,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 10:08:21,498 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-07-13 10:08:21,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 10:08:21,500 INFO L225 Difference]: With dead ends: 43 [2022-07-13 10:08:21,500 INFO L226 Difference]: Without dead ends: 41 [2022-07-13 10:08:21,502 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 10:08:21,503 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 9 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 10:08:21,504 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 119 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 10:08:21,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2022-07-13 10:08:21,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 36. [2022-07-13 10:08:21,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 35 states have (on average 1.2857142857142858) internal successors, (45), 35 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 10:08:21,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 45 transitions. [2022-07-13 10:08:21,511 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 45 transitions. Word has length 19 [2022-07-13 10:08:21,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 10:08:21,512 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 45 transitions. [2022-07-13 10:08:21,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 10:08:21,514 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 45 transitions. [2022-07-13 10:08:21,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-07-13 10:08:21,515 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 10:08:21,516 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 10:08:21,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-13 10:08:21,516 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 10:08:21,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 10:08:21,518 INFO L85 PathProgramCache]: Analyzing trace with hash 560222155, now seen corresponding path program 1 times [2022-07-13 10:08:21,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 10:08:21,519 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734756066] [2022-07-13 10:08:21,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 10:08:21,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 10:08:21,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 10:08:21,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 10:08:21,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 10:08:21,655 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734756066] [2022-07-13 10:08:21,655 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [734756066] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 10:08:21,655 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 10:08:21,655 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 10:08:21,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021004444] [2022-07-13 10:08:21,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 10:08:21,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 10:08:21,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 10:08:21,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 10:08:21,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-07-13 10:08:21,657 INFO L87 Difference]: Start difference. First operand 36 states and 45 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 10:08:21,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 10:08:21,761 INFO L93 Difference]: Finished difference Result 78 states and 102 transitions. [2022-07-13 10:08:21,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 10:08:21,761 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-07-13 10:08:21,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 10:08:21,762 INFO L225 Difference]: With dead ends: 78 [2022-07-13 10:08:21,762 INFO L226 Difference]: Without dead ends: 52 [2022-07-13 10:08:21,763 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-07-13 10:08:21,763 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 88 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 10:08:21,764 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 24 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 10:08:21,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2022-07-13 10:08:21,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 40. [2022-07-13 10:08:21,767 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) [2022-07-13 10:08:21,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 49 transitions. [2022-07-13 10:08:21,768 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 49 transitions. Word has length 19 [2022-07-13 10:08:21,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 10:08:21,768 INFO L495 AbstractCegarLoop]: Abstraction has 40 states and 49 transitions. [2022-07-13 10:08:21,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 10:08:21,768 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 49 transitions. [2022-07-13 10:08:21,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-07-13 10:08:21,769 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 10:08:21,769 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 10:08:21,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-13 10:08:21,769 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 10:08:21,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 10:08:21,770 INFO L85 PathProgramCache]: Analyzing trace with hash -846989385, now seen corresponding path program 1 times [2022-07-13 10:08:21,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 10:08:21,770 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114150660] [2022-07-13 10:08:21,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 10:08:21,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 10:08:21,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 10:08:21,841 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-13 10:08:21,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 10:08:21,841 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114150660] [2022-07-13 10:08:21,841 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2114150660] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 10:08:21,842 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 10:08:21,842 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 10:08:21,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169760384] [2022-07-13 10:08:21,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 10:08:21,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 10:08:21,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 10:08:21,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 10:08:21,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 10:08:21,843 INFO L87 Difference]: Start difference. First operand 40 states and 49 transitions. Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 10:08:21,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 10:08:21,855 INFO L93 Difference]: Finished difference Result 55 states and 67 transitions. [2022-07-13 10:08:21,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 10:08:21,855 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2022-07-13 10:08:21,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 10:08:21,856 INFO L225 Difference]: With dead ends: 55 [2022-07-13 10:08:21,856 INFO L226 Difference]: Without dead ends: 40 [2022-07-13 10:08:21,856 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 10:08:21,857 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 17 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 10:08:21,857 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 35 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 10:08:21,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2022-07-13 10:08:21,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2022-07-13 10:08:21,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 39 states have (on average 1.2307692307692308) internal successors, (48), 39 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 10:08:21,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 48 transitions. [2022-07-13 10:08:21,884 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 48 transitions. Word has length 35 [2022-07-13 10:08:21,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 10:08:21,885 INFO L495 AbstractCegarLoop]: Abstraction has 40 states and 48 transitions. [2022-07-13 10:08:21,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 10:08:21,885 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 48 transitions. [2022-07-13 10:08:21,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-07-13 10:08:21,886 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 10:08:21,886 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 10:08:21,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-13 10:08:21,887 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 10:08:21,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 10:08:21,887 INFO L85 PathProgramCache]: Analyzing trace with hash -1240016395, now seen corresponding path program 1 times [2022-07-13 10:08:21,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 10:08:21,888 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961123271] [2022-07-13 10:08:21,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 10:08:21,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 10:08:21,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 10:08:22,191 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 10:08:22,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 10:08:22,192 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961123271] [2022-07-13 10:08:22,192 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1961123271] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 10:08:22,192 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [143302727] [2022-07-13 10:08:22,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 10:08:22,193 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 10:08:22,193 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 10:08:22,209 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 10:08:22,222 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-13 10:08:22,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 10:08:22,296 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 47 conjunts are in the unsatisfiable core [2022-07-13 10:08:22,311 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 10:08:22,414 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-07-13 10:08:22,444 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:08:22,444 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:08:22,445 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:08:22,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:08:22,447 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:08:22,447 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:08:22,448 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 38 [2022-07-13 10:08:22,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:08:22,512 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 28 [2022-07-13 10:08:22,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:08:22,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:08:22,538 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:08:22,538 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 32 [2022-07-13 10:08:22,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:08:22,574 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 28 [2022-07-13 10:08:22,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:08:22,588 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:08:22,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:08:22,590 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 32 [2022-07-13 10:08:22,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:08:22,627 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 28 [2022-07-13 10:08:22,661 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:08:22,661 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:08:22,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:08:22,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:08:22,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:08:22,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:08:22,666 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-13 10:08:22,667 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 41 [2022-07-13 10:08:22,750 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 10:08:22,751 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 10:08:23,222 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 27 [2022-07-13 10:08:23,230 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 51 [2022-07-13 10:08:23,241 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2022-07-13 10:08:23,244 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:08:23,331 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-13 10:08:23,331 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [143302727] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 10:08:23,332 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 10:08:23,332 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10, 11] total 25 [2022-07-13 10:08:23,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532328050] [2022-07-13 10:08:23,332 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 10:08:23,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-07-13 10:08:23,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 10:08:23,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-07-13 10:08:23,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=498, Unknown=0, NotChecked=0, Total=600 [2022-07-13 10:08:23,333 INFO L87 Difference]: Start difference. First operand 40 states and 48 transitions. Second operand has 25 states, 25 states have (on average 3.88) internal successors, (97), 25 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 10:08:24,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 10:08:24,329 INFO L93 Difference]: Finished difference Result 174 states and 212 transitions. [2022-07-13 10:08:24,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-07-13 10:08:24,329 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.88) internal successors, (97), 25 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2022-07-13 10:08:24,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 10:08:24,330 INFO L225 Difference]: With dead ends: 174 [2022-07-13 10:08:24,330 INFO L226 Difference]: Without dead ends: 141 [2022-07-13 10:08:24,331 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 66 SyntacticMatches, 9 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 784 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=644, Invalid=2326, Unknown=0, NotChecked=0, Total=2970 [2022-07-13 10:08:24,331 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 327 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 489 mSolverCounterSat, 202 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 327 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 739 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 202 IncrementalHoareTripleChecker+Valid, 489 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 48 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-13 10:08:24,332 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [327 Valid, 155 Invalid, 739 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [202 Valid, 489 Invalid, 0 Unknown, 48 Unchecked, 0.3s Time] [2022-07-13 10:08:24,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2022-07-13 10:08:24,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 67. [2022-07-13 10:08:24,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 66 states have (on average 1.2272727272727273) internal successors, (81), 66 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 10:08:24,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 81 transitions. [2022-07-13 10:08:24,340 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 81 transitions. Word has length 35 [2022-07-13 10:08:24,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 10:08:24,340 INFO L495 AbstractCegarLoop]: Abstraction has 67 states and 81 transitions. [2022-07-13 10:08:24,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.88) internal successors, (97), 25 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 10:08:24,340 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 81 transitions. [2022-07-13 10:08:24,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-07-13 10:08:24,341 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 10:08:24,341 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 10:08:24,361 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-13 10:08:24,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 10:08:24,559 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 10:08:24,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 10:08:24,560 INFO L85 PathProgramCache]: Analyzing trace with hash 505076392, now seen corresponding path program 1 times [2022-07-13 10:08:24,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 10:08:24,560 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57352338] [2022-07-13 10:08:24,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 10:08:24,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 10:08:24,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 10:08:24,745 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 10:08:24,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 10:08:24,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57352338] [2022-07-13 10:08:24,746 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [57352338] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 10:08:24,746 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [71239380] [2022-07-13 10:08:24,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 10:08:24,746 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 10:08:24,746 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 10:08:24,747 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 10:08:24,748 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-13 10:08:24,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 10:08:24,806 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 40 conjunts are in the unsatisfiable core [2022-07-13 10:08:24,812 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 10:08:24,871 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-07-13 10:08:24,913 INFO L356 Elim1Store]: treesize reduction 163, result has 13.8 percent of original size [2022-07-13 10:08:24,913 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 31 treesize of output 38 [2022-07-13 10:08:24,959 INFO L356 Elim1Store]: treesize reduction 42, result has 22.2 percent of original size [2022-07-13 10:08:24,959 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 28 [2022-07-13 10:08:24,980 INFO L356 Elim1Store]: treesize reduction 70, result has 19.5 percent of original size [2022-07-13 10:08:24,981 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 40 treesize of output 32 [2022-07-13 10:08:25,014 INFO L356 Elim1Store]: treesize reduction 42, result has 22.2 percent of original size [2022-07-13 10:08:25,014 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 28 [2022-07-13 10:08:25,057 INFO L356 Elim1Store]: treesize reduction 175, result has 12.9 percent of original size [2022-07-13 10:08:25,058 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 5 case distinctions, treesize of input 46 treesize of output 41 [2022-07-13 10:08:25,158 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-13 10:08:25,159 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 10:08:25,490 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 31 [2022-07-13 10:08:25,492 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 59 [2022-07-13 10:08:25,509 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 15 [2022-07-13 10:08:25,512 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 30 [2022-07-13 10:08:25,612 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-13 10:08:25,613 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [71239380] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 10:08:25,613 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 10:08:25,613 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 12] total 26 [2022-07-13 10:08:25,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120930717] [2022-07-13 10:08:25,613 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 10:08:25,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-07-13 10:08:25,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 10:08:25,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-07-13 10:08:25,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=539, Unknown=0, NotChecked=0, Total=650 [2022-07-13 10:08:25,615 INFO L87 Difference]: Start difference. First operand 67 states and 81 transitions. Second operand has 26 states, 26 states have (on average 4.423076923076923) internal successors, (115), 26 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 10:08:26,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 10:08:26,514 INFO L93 Difference]: Finished difference Result 198 states and 238 transitions. [2022-07-13 10:08:26,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-07-13 10:08:26,514 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 4.423076923076923) internal successors, (115), 26 states have internal predecessors, (115), 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 41 [2022-07-13 10:08:26,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 10:08:26,515 INFO L225 Difference]: With dead ends: 198 [2022-07-13 10:08:26,515 INFO L226 Difference]: Without dead ends: 151 [2022-07-13 10:08:26,516 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 69 SyntacticMatches, 8 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 599 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=611, Invalid=1939, Unknown=0, NotChecked=0, Total=2550 [2022-07-13 10:08:26,517 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 453 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 442 mSolverCounterSat, 261 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 453 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 704 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 261 IncrementalHoareTripleChecker+Valid, 442 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-13 10:08:26,517 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [453 Valid, 104 Invalid, 704 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [261 Valid, 442 Invalid, 0 Unknown, 1 Unchecked, 0.3s Time] [2022-07-13 10:08:26,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2022-07-13 10:08:26,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 87. [2022-07-13 10:08:26,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 86 states have (on average 1.186046511627907) internal successors, (102), 86 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 10:08:26,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 102 transitions. [2022-07-13 10:08:26,526 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 102 transitions. Word has length 41 [2022-07-13 10:08:26,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 10:08:26,526 INFO L495 AbstractCegarLoop]: Abstraction has 87 states and 102 transitions. [2022-07-13 10:08:26,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 4.423076923076923) internal successors, (115), 26 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 10:08:26,526 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 102 transitions. [2022-07-13 10:08:26,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-07-13 10:08:26,527 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 10:08:26,527 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 10:08:26,546 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-07-13 10:08:26,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-07-13 10:08:26,744 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 10:08:26,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 10:08:26,744 INFO L85 PathProgramCache]: Analyzing trace with hash 1880770843, now seen corresponding path program 2 times [2022-07-13 10:08:26,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 10:08:26,744 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571893767] [2022-07-13 10:08:26,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 10:08:26,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 10:08:26,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 10:08:26,955 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-13 10:08:26,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 10:08:26,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571893767] [2022-07-13 10:08:26,955 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571893767] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 10:08:26,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [916182763] [2022-07-13 10:08:26,956 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-13 10:08:26,956 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 10:08:26,956 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 10:08:26,958 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 10:08:26,959 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-13 10:08:27,017 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-13 10:08:27,017 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 10:08:27,018 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 36 conjunts are in the unsatisfiable core [2022-07-13 10:08:27,021 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 10:08:27,098 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-07-13 10:08:27,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:08:27,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:08:27,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:08:27,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:08:27,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:08:27,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:08:27,121 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 38 [2022-07-13 10:08:27,158 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:08:27,159 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 28 [2022-07-13 10:08:27,182 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:08:27,183 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:08:27,183 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:08:27,184 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:08:27,185 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:08:27,185 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:08:27,187 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-13 10:08:27,187 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 41 [2022-07-13 10:08:27,362 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-13 10:08:27,362 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 10:08:27,606 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 31 [2022-07-13 10:08:27,609 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 59 [2022-07-13 10:08:27,737 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-13 10:08:27,737 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [916182763] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 10:08:27,737 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 10:08:27,737 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11, 11] total 27 [2022-07-13 10:08:27,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871908659] [2022-07-13 10:08:27,738 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 10:08:27,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-07-13 10:08:27,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 10:08:27,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-07-13 10:08:27,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=596, Unknown=0, NotChecked=0, Total=702 [2022-07-13 10:08:27,739 INFO L87 Difference]: Start difference. First operand 87 states and 102 transitions. Second operand has 27 states, 27 states have (on average 4.925925925925926) internal successors, (133), 27 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 10:08:28,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 10:08:28,588 INFO L93 Difference]: Finished difference Result 194 states and 226 transitions. [2022-07-13 10:08:28,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-07-13 10:08:28,588 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 4.925925925925926) internal successors, (133), 27 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2022-07-13 10:08:28,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 10:08:28,589 INFO L225 Difference]: With dead ends: 194 [2022-07-13 10:08:28,589 INFO L226 Difference]: Without dead ends: 139 [2022-07-13 10:08:28,590 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 76 SyntacticMatches, 6 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 599 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=506, Invalid=1944, Unknown=0, NotChecked=0, Total=2450 [2022-07-13 10:08:28,591 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 371 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 513 mSolverCounterSat, 225 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 371 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 738 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 225 IncrementalHoareTripleChecker+Valid, 513 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-13 10:08:28,591 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [371 Valid, 126 Invalid, 738 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [225 Valid, 513 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-13 10:08:28,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2022-07-13 10:08:28,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 85. [2022-07-13 10:08:28,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 84 states have (on average 1.1428571428571428) internal successors, (96), 84 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 10:08:28,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 96 transitions. [2022-07-13 10:08:28,598 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 96 transitions. Word has length 47 [2022-07-13 10:08:28,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 10:08:28,598 INFO L495 AbstractCegarLoop]: Abstraction has 85 states and 96 transitions. [2022-07-13 10:08:28,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 4.925925925925926) internal successors, (133), 27 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 10:08:28,598 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 96 transitions. [2022-07-13 10:08:28,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-07-13 10:08:28,599 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 10:08:28,599 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 10:08:28,616 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-13 10:08:28,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 10:08:28,812 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 10:08:28,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 10:08:28,812 INFO L85 PathProgramCache]: Analyzing trace with hash 1960980289, now seen corresponding path program 3 times [2022-07-13 10:08:28,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 10:08:28,813 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455196828] [2022-07-13 10:08:28,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 10:08:28,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 10:08:28,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 10:08:29,006 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 33 proven. 20 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-13 10:08:29,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 10:08:29,006 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455196828] [2022-07-13 10:08:29,007 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [455196828] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 10:08:29,007 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1858301275] [2022-07-13 10:08:29,007 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-13 10:08:29,007 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 10:08:29,007 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 10:08:29,008 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 10:08:29,009 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-13 10:08:29,161 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-07-13 10:08:29,161 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 10:08:29,163 INFO L263 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 13 conjunts are in the unsatisfiable core [2022-07-13 10:08:29,164 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 10:08:29,514 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 52 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-13 10:08:29,514 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 10:08:29,644 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 52 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-13 10:08:29,645 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1858301275] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 10:08:29,645 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 10:08:29,645 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 11] total 30 [2022-07-13 10:08:29,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840235571] [2022-07-13 10:08:29,645 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 10:08:29,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-07-13 10:08:29,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 10:08:29,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-07-13 10:08:29,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=226, Invalid=644, Unknown=0, NotChecked=0, Total=870 [2022-07-13 10:08:29,646 INFO L87 Difference]: Start difference. First operand 85 states and 96 transitions. Second operand has 30 states, 30 states have (on average 5.466666666666667) internal successors, (164), 30 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 10:08:29,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 10:08:29,923 INFO L93 Difference]: Finished difference Result 201 states and 226 transitions. [2022-07-13 10:08:29,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 10:08:29,924 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 5.466666666666667) internal successors, (164), 30 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2022-07-13 10:08:29,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 10:08:29,924 INFO L225 Difference]: With dead ends: 201 [2022-07-13 10:08:29,924 INFO L226 Difference]: Without dead ends: 88 [2022-07-13 10:08:29,925 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 99 SyntacticMatches, 2 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 366 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=316, Invalid=874, Unknown=0, NotChecked=0, Total=1190 [2022-07-13 10:08:29,926 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 242 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 378 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 242 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 483 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 378 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-13 10:08:29,926 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [242 Valid, 153 Invalid, 483 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 378 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-13 10:08:29,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2022-07-13 10:08:29,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 76. [2022-07-13 10:08:29,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 75 states have (on average 1.1066666666666667) internal successors, (83), 75 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 10:08:29,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 83 transitions. [2022-07-13 10:08:29,932 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 83 transitions. Word has length 59 [2022-07-13 10:08:29,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 10:08:29,932 INFO L495 AbstractCegarLoop]: Abstraction has 76 states and 83 transitions. [2022-07-13 10:08:29,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 5.466666666666667) internal successors, (164), 30 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 10:08:29,933 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 83 transitions. [2022-07-13 10:08:29,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-07-13 10:08:29,934 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 10:08:29,934 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 10:08:29,953 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-13 10:08:30,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 10:08:30,151 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 10:08:30,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 10:08:30,152 INFO L85 PathProgramCache]: Analyzing trace with hash 1835840619, now seen corresponding path program 4 times [2022-07-13 10:08:30,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 10:08:30,152 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823574689] [2022-07-13 10:08:30,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 10:08:30,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 10:08:30,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 10:08:30,384 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 26 proven. 30 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-07-13 10:08:30,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 10:08:30,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823574689] [2022-07-13 10:08:30,384 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1823574689] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 10:08:30,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [725771201] [2022-07-13 10:08:30,384 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-07-13 10:08:30,384 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 10:08:30,384 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 10:08:30,386 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 10:08:30,387 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-13 10:08:30,465 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-07-13 10:08:30,465 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 10:08:30,466 INFO L263 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 24 conjunts are in the unsatisfiable core [2022-07-13 10:08:30,469 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 10:08:30,506 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-07-13 10:08:30,541 INFO L356 Elim1Store]: treesize reduction 295, result has 11.1 percent of original size [2022-07-13 10:08:30,541 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 45 treesize of output 52 [2022-07-13 10:08:30,568 INFO L356 Elim1Store]: treesize reduction 33, result has 21.4 percent of original size [2022-07-13 10:08:30,568 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 25 [2022-07-13 10:08:30,594 INFO L356 Elim1Store]: treesize reduction 259, result has 11.6 percent of original size [2022-07-13 10:08:30,595 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 42 treesize of output 49 [2022-07-13 10:08:30,728 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-07-13 10:08:30,745 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 26 proven. 30 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-07-13 10:08:30,745 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 10:08:32,874 WARN L833 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~i~0#1_105| Int)) (or (forall ((v_ArrVal_401 Int)) (< (select (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#volArray~0#1.base|) (+ (* 16 |v_ULTIMATE.start_main_~i~0#1_105|) (- 4) |c_ULTIMATE.start_main_~#volArray~0#1.offset|) v_ArrVal_401) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| 12)) |c_ULTIMATE.start_main_~MINVAL~0#1|)) (not (<= (+ |c_ULTIMATE.start_main_~i~0#1| 1) |v_ULTIMATE.start_main_~i~0#1_105|)))) is different from false [2022-07-13 10:08:32,932 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 47 [2022-07-13 10:08:32,952 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13864 treesize of output 13800 [2022-07-13 10:09:20,685 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 26 proven. 29 refuted. 0 times theorem prover too weak. 20 trivial. 1 not checked. [2022-07-13 10:09:20,686 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [725771201] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 10:09:20,686 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 10:09:20,686 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 13] total 30 [2022-07-13 10:09:20,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826131497] [2022-07-13 10:09:20,686 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 10:09:20,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-07-13 10:09:20,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 10:09:20,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-07-13 10:09:20,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=646, Unknown=1, NotChecked=54, Total=870 [2022-07-13 10:09:20,688 INFO L87 Difference]: Start difference. First operand 76 states and 83 transitions. Second operand has 30 states, 30 states have (on average 5.5) internal successors, (165), 30 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 10:09:22,798 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse0 (+ (* 16 |c_ULTIMATE.start_main_~i~0#1|) (- 4) |c_ULTIMATE.start_main_~#volArray~0#1.offset|))) (and (= |c_ULTIMATE.start_main_~#volArray~0#1.offset| 0) (= (+ (- 2) |c_ULTIMATE.start_main_~MINVAL~0#1|) 0) (= (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#volArray~0#1.base|) .cse0) 0) (forall ((|v_ULTIMATE.start_main_~i~0#1_105| Int)) (or (forall ((v_ArrVal_401 Int)) (< (select (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#volArray~0#1.base|) (+ (* 16 |v_ULTIMATE.start_main_~i~0#1_105|) (- 4) |c_ULTIMATE.start_main_~#volArray~0#1.offset|) v_ArrVal_401) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| 12)) |c_ULTIMATE.start_main_~MINVAL~0#1|)) (not (<= (+ |c_ULTIMATE.start_main_~i~0#1| 1) |v_ULTIMATE.start_main_~i~0#1_105|)))) (= 12 .cse0))) is different from false [2022-07-13 10:09:24,853 WARN L833 $PredicateComparison]: unable to prove that (and (= |c_ULTIMATE.start_main_~#volArray~0#1.offset| 0) (= (+ (- 2) |c_ULTIMATE.start_main_~MINVAL~0#1|) 0) (forall ((|v_ULTIMATE.start_main_~i~0#1_105| Int)) (or (forall ((v_ArrVal_401 Int)) (< (select (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#volArray~0#1.base|) (+ (* 16 |v_ULTIMATE.start_main_~i~0#1_105|) (- 4) |c_ULTIMATE.start_main_~#volArray~0#1.offset|) v_ArrVal_401) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| 12)) |c_ULTIMATE.start_main_~MINVAL~0#1|)) (not (<= (+ |c_ULTIMATE.start_main_~i~0#1| 1) |v_ULTIMATE.start_main_~i~0#1_105|)))) (= (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#volArray~0#1.base|) 12) 0)) is different from false [2022-07-13 10:09:24,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 10:09:24,941 INFO L93 Difference]: Finished difference Result 95 states and 104 transitions. [2022-07-13 10:09:24,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 10:09:24,942 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 5.5) internal successors, (165), 30 states have internal predecessors, (165), 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 75 [2022-07-13 10:09:24,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 10:09:24,942 INFO L225 Difference]: With dead ends: 95 [2022-07-13 10:09:24,942 INFO L226 Difference]: Without dead ends: 85 [2022-07-13 10:09:24,943 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 136 SyntacticMatches, 5 SemanticMatches, 32 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 433 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=205, Invalid=734, Unknown=3, NotChecked=180, Total=1122 [2022-07-13 10:09:24,943 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 177 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 429 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 216 SdHoareTripleChecker+Invalid, 618 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 429 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 137 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-13 10:09:24,943 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [177 Valid, 216 Invalid, 618 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 429 Invalid, 0 Unknown, 137 Unchecked, 0.2s Time] [2022-07-13 10:09:24,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2022-07-13 10:09:24,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 76. [2022-07-13 10:09:24,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 75 states have (on average 1.0933333333333333) internal successors, (82), 75 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 10:09:24,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 82 transitions. [2022-07-13 10:09:24,953 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 82 transitions. Word has length 75 [2022-07-13 10:09:24,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 10:09:24,953 INFO L495 AbstractCegarLoop]: Abstraction has 76 states and 82 transitions. [2022-07-13 10:09:24,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 5.5) internal successors, (165), 30 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 10:09:24,954 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 82 transitions. [2022-07-13 10:09:24,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-07-13 10:09:24,954 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 10:09:24,954 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 10:09:24,973 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-13 10:09:25,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 10:09:25,155 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 10:09:25,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 10:09:25,156 INFO L85 PathProgramCache]: Analyzing trace with hash 1442813609, now seen corresponding path program 5 times [2022-07-13 10:09:25,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 10:09:25,156 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253617513] [2022-07-13 10:09:25,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 10:09:25,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 10:09:25,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 10:09:25,572 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 8 proven. 66 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-13 10:09:25,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 10:09:25,572 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253617513] [2022-07-13 10:09:25,572 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [253617513] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 10:09:25,572 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1643782583] [2022-07-13 10:09:25,573 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-07-13 10:09:25,573 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 10:09:25,573 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 10:09:25,574 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 10:09:25,574 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-13 10:09:27,570 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-07-13 10:09:27,571 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 10:09:27,579 INFO L263 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 63 conjunts are in the unsatisfiable core [2022-07-13 10:09:27,584 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 10:09:27,643 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-07-13 10:09:27,680 INFO L356 Elim1Store]: treesize reduction 181, result has 13.4 percent of original size [2022-07-13 10:09:27,687 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 40 [2022-07-13 10:09:27,733 INFO L356 Elim1Store]: treesize reduction 33, result has 21.4 percent of original size [2022-07-13 10:09:27,733 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 25 [2022-07-13 10:09:27,764 INFO L356 Elim1Store]: treesize reduction 259, result has 11.6 percent of original size [2022-07-13 10:09:27,765 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 42 treesize of output 49 [2022-07-13 10:09:27,795 INFO L356 Elim1Store]: treesize reduction 42, result has 22.2 percent of original size [2022-07-13 10:09:27,795 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 28 [2022-07-13 10:09:27,819 INFO L356 Elim1Store]: treesize reduction 84, result has 18.4 percent of original size [2022-07-13 10:09:27,820 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 42 treesize of output 34 [2022-07-13 10:09:27,844 INFO L356 Elim1Store]: treesize reduction 33, result has 21.4 percent of original size [2022-07-13 10:09:27,845 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 25 [2022-07-13 10:09:27,875 INFO L356 Elim1Store]: treesize reduction 259, result has 11.6 percent of original size [2022-07-13 10:09:27,875 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 42 treesize of output 49 [2022-07-13 10:09:27,904 INFO L356 Elim1Store]: treesize reduction 42, result has 22.2 percent of original size [2022-07-13 10:09:27,904 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 28 [2022-07-13 10:09:27,938 INFO L356 Elim1Store]: treesize reduction 84, result has 18.4 percent of original size [2022-07-13 10:09:27,940 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 42 treesize of output 34 [2022-07-13 10:09:27,965 INFO L356 Elim1Store]: treesize reduction 33, result has 21.4 percent of original size [2022-07-13 10:09:27,965 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 25 [2022-07-13 10:09:27,992 INFO L356 Elim1Store]: treesize reduction 259, result has 11.6 percent of original size [2022-07-13 10:09:27,993 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 42 treesize of output 49 [2022-07-13 10:09:28,024 INFO L356 Elim1Store]: treesize reduction 42, result has 22.2 percent of original size [2022-07-13 10:09:28,025 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 28 [2022-07-13 10:09:28,052 INFO L356 Elim1Store]: treesize reduction 84, result has 18.4 percent of original size [2022-07-13 10:09:28,052 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 42 treesize of output 34 [2022-07-13 10:09:28,198 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-07-13 10:09:28,205 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 8 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 10:09:28,205 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 10:09:39,688 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 15 [2022-07-13 10:09:39,690 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 30 [2022-07-13 10:09:39,761 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 8 proven. 62 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-13 10:09:39,761 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1643782583] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 10:09:39,761 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 10:09:39,761 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 12, 13] total 34 [2022-07-13 10:09:39,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717670783] [2022-07-13 10:09:39,761 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 10:09:39,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-07-13 10:09:39,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 10:09:39,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-07-13 10:09:39,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=984, Unknown=0, NotChecked=0, Total=1122 [2022-07-13 10:09:39,762 INFO L87 Difference]: Start difference. First operand 76 states and 82 transitions. Second operand has 34 states, 34 states have (on average 6.147058823529412) internal successors, (209), 34 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 10:09:40,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 10:09:40,902 INFO L93 Difference]: Finished difference Result 167 states and 185 transitions. [2022-07-13 10:09:40,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-07-13 10:09:40,902 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 6.147058823529412) internal successors, (209), 34 states have internal predecessors, (209), 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 75 [2022-07-13 10:09:40,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 10:09:40,903 INFO L225 Difference]: With dead ends: 167 [2022-07-13 10:09:40,903 INFO L226 Difference]: Without dead ends: 157 [2022-07-13 10:09:40,904 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 131 SyntacticMatches, 31 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1136 ImplicationChecksByTransitivity, 12.2s TimeCoverageRelationStatistics Valid=519, Invalid=2673, Unknown=0, NotChecked=0, Total=3192 [2022-07-13 10:09:40,904 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 580 mSDsluCounter, 234 mSDsCounter, 0 mSdLazyCounter, 1060 mSolverCounterSat, 355 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 580 SdHoareTripleChecker+Valid, 264 SdHoareTripleChecker+Invalid, 1706 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 355 IncrementalHoareTripleChecker+Valid, 1060 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 291 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-13 10:09:40,905 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [580 Valid, 264 Invalid, 1706 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [355 Valid, 1060 Invalid, 0 Unknown, 291 Unchecked, 0.6s Time] [2022-07-13 10:09:40,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2022-07-13 10:09:40,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 82. [2022-07-13 10:09:40,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 81 states have (on average 1.0864197530864197) internal successors, (88), 81 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 10:09:40,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 88 transitions. [2022-07-13 10:09:40,911 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 88 transitions. Word has length 75 [2022-07-13 10:09:40,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 10:09:40,911 INFO L495 AbstractCegarLoop]: Abstraction has 82 states and 88 transitions. [2022-07-13 10:09:40,912 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 6.147058823529412) internal successors, (209), 34 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 10:09:40,912 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 88 transitions. [2022-07-13 10:09:40,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-07-13 10:09:40,912 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 10:09:40,913 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 10:09:40,922 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-13 10:09:41,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 10:09:41,120 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 10:09:41,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 10:09:41,121 INFO L85 PathProgramCache]: Analyzing trace with hash 1969766492, now seen corresponding path program 6 times [2022-07-13 10:09:41,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 10:09:41,121 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686691502] [2022-07-13 10:09:41,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 10:09:41,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 10:09:41,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 10:09:41,507 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 10 proven. 92 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-13 10:09:41,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 10:09:41,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686691502] [2022-07-13 10:09:41,507 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1686691502] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 10:09:41,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [912644122] [2022-07-13 10:09:41,507 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-07-13 10:09:41,507 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 10:09:41,508 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 10:09:41,509 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 10:09:41,509 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-13 10:09:41,900 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2022-07-13 10:09:41,900 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 10:09:41,903 INFO L263 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 61 conjunts are in the unsatisfiable core [2022-07-13 10:09:41,909 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 10:09:41,984 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-07-13 10:09:42,028 INFO L356 Elim1Store]: treesize reduction 181, result has 13.4 percent of original size [2022-07-13 10:09:42,028 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 40 [2022-07-13 10:09:42,083 INFO L356 Elim1Store]: treesize reduction 33, result has 21.4 percent of original size [2022-07-13 10:09:42,083 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 25 [2022-07-13 10:09:42,111 INFO L356 Elim1Store]: treesize reduction 259, result has 11.6 percent of original size [2022-07-13 10:09:42,111 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 42 treesize of output 49 [2022-07-13 10:09:42,142 INFO L356 Elim1Store]: treesize reduction 42, result has 22.2 percent of original size [2022-07-13 10:09:42,143 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 28 [2022-07-13 10:09:42,163 INFO L356 Elim1Store]: treesize reduction 84, result has 18.4 percent of original size [2022-07-13 10:09:42,163 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 42 treesize of output 34 [2022-07-13 10:09:42,185 INFO L356 Elim1Store]: treesize reduction 33, result has 21.4 percent of original size [2022-07-13 10:09:42,185 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 25 [2022-07-13 10:09:42,226 INFO L356 Elim1Store]: treesize reduction 259, result has 11.6 percent of original size [2022-07-13 10:09:42,226 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 42 treesize of output 49 [2022-07-13 10:09:42,254 INFO L356 Elim1Store]: treesize reduction 42, result has 22.2 percent of original size [2022-07-13 10:09:42,254 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 28 [2022-07-13 10:09:42,309 INFO L356 Elim1Store]: treesize reduction 193, result has 12.7 percent of original size [2022-07-13 10:09:42,309 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 5 case distinctions, treesize of input 48 treesize of output 43 [2022-07-13 10:09:42,625 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 10 proven. 88 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-13 10:09:42,625 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 10:09:45,494 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 31 [2022-07-13 10:09:45,496 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 59 [2022-07-13 10:09:45,509 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 15 [2022-07-13 10:09:45,511 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 30 [2022-07-13 10:09:45,681 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 96 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-07-13 10:09:45,682 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [912644122] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 10:09:45,682 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 10:09:45,682 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 20] total 47 [2022-07-13 10:09:45,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714244293] [2022-07-13 10:09:45,682 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 10:09:45,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-07-13 10:09:45,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 10:09:45,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-07-13 10:09:45,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=257, Invalid=1905, Unknown=0, NotChecked=0, Total=2162 [2022-07-13 10:09:45,684 INFO L87 Difference]: Start difference. First operand 82 states and 88 transitions. Second operand has 47 states, 47 states have (on average 4.787234042553192) internal successors, (225), 47 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 10:09:49,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 10:09:49,841 INFO L93 Difference]: Finished difference Result 489 states and 532 transitions. [2022-07-13 10:09:49,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 121 states. [2022-07-13 10:09:49,842 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 4.787234042553192) internal successors, (225), 47 states have internal predecessors, (225), 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 81 [2022-07-13 10:09:49,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 10:09:49,844 INFO L225 Difference]: With dead ends: 489 [2022-07-13 10:09:49,844 INFO L226 Difference]: Without dead ends: 479 [2022-07-13 10:09:49,849 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 329 GetRequests, 146 SyntacticMatches, 28 SemanticMatches, 155 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8819 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=2690, Invalid=21802, Unknown=0, NotChecked=0, Total=24492 [2022-07-13 10:09:49,850 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 718 mSDsluCounter, 436 mSDsCounter, 0 mSdLazyCounter, 2012 mSolverCounterSat, 378 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 718 SdHoareTripleChecker+Valid, 464 SdHoareTripleChecker+Invalid, 2858 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 378 IncrementalHoareTripleChecker+Valid, 2012 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 468 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-13 10:09:49,850 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [718 Valid, 464 Invalid, 2858 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [378 Valid, 2012 Invalid, 0 Unknown, 468 Unchecked, 1.0s Time] [2022-07-13 10:09:49,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 479 states. [2022-07-13 10:09:49,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 479 to 237. [2022-07-13 10:09:49,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 237 states, 236 states have (on average 1.0932203389830508) internal successors, (258), 236 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 10:09:49,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 258 transitions. [2022-07-13 10:09:49,870 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 258 transitions. Word has length 81 [2022-07-13 10:09:49,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 10:09:49,870 INFO L495 AbstractCegarLoop]: Abstraction has 237 states and 258 transitions. [2022-07-13 10:09:49,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 4.787234042553192) internal successors, (225), 47 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 10:09:49,870 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 258 transitions. [2022-07-13 10:09:49,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-07-13 10:09:49,871 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 10:09:49,872 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 10:09:49,889 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-07-13 10:09:50,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 10:09:50,078 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 10:09:50,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 10:09:50,078 INFO L85 PathProgramCache]: Analyzing trace with hash 1625921487, now seen corresponding path program 7 times [2022-07-13 10:09:50,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 10:09:50,078 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675454510] [2022-07-13 10:09:50,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 10:09:50,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 10:09:50,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 10:09:50,437 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 12 proven. 118 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-07-13 10:09:50,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 10:09:50,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675454510] [2022-07-13 10:09:50,438 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [675454510] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 10:09:50,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [168832421] [2022-07-13 10:09:50,438 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-07-13 10:09:50,438 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 10:09:50,438 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 10:09:50,439 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 10:09:50,463 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-07-13 10:09:50,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 10:09:50,535 INFO L263 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 51 conjunts are in the unsatisfiable core [2022-07-13 10:09:50,537 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 10:09:50,638 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-07-13 10:09:50,687 INFO L356 Elim1Store]: treesize reduction 181, result has 13.4 percent of original size [2022-07-13 10:09:50,687 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 40 [2022-07-13 10:09:50,739 INFO L356 Elim1Store]: treesize reduction 33, result has 21.4 percent of original size [2022-07-13 10:09:50,739 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 25 [2022-07-13 10:09:50,771 INFO L356 Elim1Store]: treesize reduction 259, result has 11.6 percent of original size [2022-07-13 10:09:50,771 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 42 treesize of output 49 [2022-07-13 10:09:50,803 INFO L356 Elim1Store]: treesize reduction 42, result has 22.2 percent of original size [2022-07-13 10:09:50,803 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 28 [2022-07-13 10:09:50,855 INFO L356 Elim1Store]: treesize reduction 193, result has 12.7 percent of original size [2022-07-13 10:09:50,855 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 48 treesize of output 43 [2022-07-13 10:09:51,245 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 12 proven. 114 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-13 10:09:51,245 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 10:09:51,737 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 31 [2022-07-13 10:09:51,739 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 59 [2022-07-13 10:09:51,957 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 0 proven. 124 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-07-13 10:09:51,958 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [168832421] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 10:09:51,958 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 10:09:51,958 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 17, 17] total 45 [2022-07-13 10:09:51,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754164383] [2022-07-13 10:09:51,958 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 10:09:51,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-07-13 10:09:51,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 10:09:51,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-07-13 10:09:51,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=189, Invalid=1791, Unknown=0, NotChecked=0, Total=1980 [2022-07-13 10:09:51,960 INFO L87 Difference]: Start difference. First operand 237 states and 258 transitions. Second operand has 45 states, 45 states have (on average 5.133333333333334) internal successors, (231), 45 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 10:09:55,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 10:09:55,820 INFO L93 Difference]: Finished difference Result 621 states and 682 transitions. [2022-07-13 10:09:55,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2022-07-13 10:09:55,820 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 5.133333333333334) internal successors, (231), 45 states have internal predecessors, (231), 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 87 [2022-07-13 10:09:55,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 10:09:55,826 INFO L225 Difference]: With dead ends: 621 [2022-07-13 10:09:55,826 INFO L226 Difference]: Without dead ends: 605 [2022-07-13 10:09:55,829 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 298 GetRequests, 148 SyntacticMatches, 31 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4802 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=1614, Invalid=12906, Unknown=0, NotChecked=0, Total=14520 [2022-07-13 10:09:55,830 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 980 mSDsluCounter, 425 mSDsCounter, 0 mSdLazyCounter, 2684 mSolverCounterSat, 491 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 980 SdHoareTripleChecker+Valid, 460 SdHoareTripleChecker+Invalid, 3333 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 491 IncrementalHoareTripleChecker+Valid, 2684 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 158 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-13 10:09:55,830 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [980 Valid, 460 Invalid, 3333 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [491 Valid, 2684 Invalid, 0 Unknown, 158 Unchecked, 1.2s Time] [2022-07-13 10:09:55,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 605 states. [2022-07-13 10:09:55,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 605 to 337. [2022-07-13 10:09:55,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 337 states, 336 states have (on average 1.0892857142857142) internal successors, (366), 336 states have internal predecessors, (366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 10:09:55,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 366 transitions. [2022-07-13 10:09:55,853 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 366 transitions. Word has length 87 [2022-07-13 10:09:55,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 10:09:55,854 INFO L495 AbstractCegarLoop]: Abstraction has 337 states and 366 transitions. [2022-07-13 10:09:55,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 5.133333333333334) internal successors, (231), 45 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 10:09:55,854 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 366 transitions. [2022-07-13 10:09:55,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-07-13 10:09:55,855 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 10:09:55,855 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 10:09:55,871 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-07-13 10:09:56,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-07-13 10:09:56,065 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 10:09:56,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 10:09:56,065 INFO L85 PathProgramCache]: Analyzing trace with hash -486455342, now seen corresponding path program 8 times [2022-07-13 10:09:56,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 10:09:56,065 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273255523] [2022-07-13 10:09:56,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 10:09:56,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 10:09:56,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 10:09:56,204 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 19 proven. 15 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2022-07-13 10:09:56,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 10:09:56,205 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273255523] [2022-07-13 10:09:56,205 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1273255523] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 10:09:56,205 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1839716815] [2022-07-13 10:09:56,205 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-13 10:09:56,205 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 10:09:56,205 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 10:09:56,206 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 10:09:56,207 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-07-13 10:09:56,297 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-13 10:09:56,297 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 10:09:56,298 INFO L263 TraceCheckSpWp]: Trace formula consists of 316 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-13 10:09:56,299 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 10:09:56,429 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 6 proven. 24 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2022-07-13 10:09:56,429 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 10:09:56,647 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 6 proven. 24 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2022-07-13 10:09:56,647 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1839716815] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 10:09:56,647 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 10:09:56,647 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 9] total 22 [2022-07-13 10:09:56,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900912496] [2022-07-13 10:09:56,648 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 10:09:56,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-07-13 10:09:56,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 10:09:56,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-07-13 10:09:56,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=375, Unknown=0, NotChecked=0, Total=462 [2022-07-13 10:09:56,649 INFO L87 Difference]: Start difference. First operand 337 states and 366 transitions. Second operand has 22 states, 22 states have (on average 4.7727272727272725) internal successors, (105), 22 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 10:09:57,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 10:09:57,285 INFO L93 Difference]: Finished difference Result 686 states and 745 transitions. [2022-07-13 10:09:57,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-07-13 10:09:57,286 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 4.7727272727272725) internal successors, (105), 22 states have internal predecessors, (105), 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 89 [2022-07-13 10:09:57,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 10:09:57,287 INFO L225 Difference]: With dead ends: 686 [2022-07-13 10:09:57,287 INFO L226 Difference]: Without dead ends: 374 [2022-07-13 10:09:57,288 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 382 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=252, Invalid=1154, Unknown=0, NotChecked=0, Total=1406 [2022-07-13 10:09:57,288 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 355 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 950 mSolverCounterSat, 130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 355 SdHoareTripleChecker+Valid, 211 SdHoareTripleChecker+Invalid, 1080 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 950 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-13 10:09:57,288 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [355 Valid, 211 Invalid, 1080 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [130 Valid, 950 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-13 10:09:57,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 374 states. [2022-07-13 10:09:57,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 374 to 307. [2022-07-13 10:09:57,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 307 states, 306 states have (on average 1.0686274509803921) internal successors, (327), 306 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 10:09:57,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 327 transitions. [2022-07-13 10:09:57,311 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 327 transitions. Word has length 89 [2022-07-13 10:09:57,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 10:09:57,311 INFO L495 AbstractCegarLoop]: Abstraction has 307 states and 327 transitions. [2022-07-13 10:09:57,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 4.7727272727272725) internal successors, (105), 22 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 10:09:57,311 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 327 transitions. [2022-07-13 10:09:57,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-07-13 10:09:57,312 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 10:09:57,312 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 8, 8, 8, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 10:09:57,328 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-07-13 10:09:57,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-07-13 10:09:57,521 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 10:09:57,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 10:09:57,522 INFO L85 PathProgramCache]: Analyzing trace with hash 1196232693, now seen corresponding path program 9 times [2022-07-13 10:09:57,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 10:09:57,523 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719850022] [2022-07-13 10:09:57,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 10:09:57,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 10:09:57,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 10:09:57,806 INFO L134 CoverageAnalysis]: Checked inductivity of 224 backedges. 157 proven. 49 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-13 10:09:57,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 10:09:57,806 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719850022] [2022-07-13 10:09:57,806 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [719850022] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 10:09:57,806 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [779428670] [2022-07-13 10:09:57,806 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-13 10:09:57,806 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 10:09:57,807 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 10:09:57,808 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 10:09:57,809 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-07-13 10:09:58,510 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2022-07-13 10:09:58,511 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 10:09:58,516 INFO L263 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 16 conjunts are in the unsatisfiable core [2022-07-13 10:09:58,517 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 10:09:59,091 INFO L134 CoverageAnalysis]: Checked inductivity of 224 backedges. 200 proven. 6 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-13 10:09:59,092 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 10:09:59,411 INFO L134 CoverageAnalysis]: Checked inductivity of 224 backedges. 200 proven. 6 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-13 10:09:59,411 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [779428670] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 10:09:59,412 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 10:09:59,412 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 16] total 46 [2022-07-13 10:09:59,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890987224] [2022-07-13 10:09:59,412 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 10:09:59,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-07-13 10:09:59,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 10:09:59,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-07-13 10:09:59,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=512, Invalid=1558, Unknown=0, NotChecked=0, Total=2070 [2022-07-13 10:09:59,413 INFO L87 Difference]: Start difference. First operand 307 states and 327 transitions. Second operand has 46 states, 46 states have (on average 5.413043478260869) internal successors, (249), 46 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 10:09:59,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 10:09:59,853 INFO L93 Difference]: Finished difference Result 379 states and 402 transitions. [2022-07-13 10:09:59,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-13 10:09:59,854 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 5.413043478260869) internal successors, (249), 46 states have internal predecessors, (249), 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 99 [2022-07-13 10:09:59,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 10:09:59,855 INFO L225 Difference]: With dead ends: 379 [2022-07-13 10:09:59,855 INFO L226 Difference]: Without dead ends: 289 [2022-07-13 10:09:59,856 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 169 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 972 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=678, Invalid=2078, Unknown=0, NotChecked=0, Total=2756 [2022-07-13 10:09:59,856 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 544 mSDsluCounter, 237 mSDsCounter, 0 mSdLazyCounter, 636 mSolverCounterSat, 153 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 544 SdHoareTripleChecker+Valid, 279 SdHoareTripleChecker+Invalid, 789 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 153 IncrementalHoareTripleChecker+Valid, 636 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-13 10:09:59,856 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [544 Valid, 279 Invalid, 789 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [153 Valid, 636 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-13 10:09:59,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2022-07-13 10:09:59,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 277. [2022-07-13 10:09:59,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 277 states, 276 states have (on average 1.0724637681159421) internal successors, (296), 276 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 10:09:59,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 296 transitions. [2022-07-13 10:09:59,877 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 296 transitions. Word has length 99 [2022-07-13 10:09:59,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 10:09:59,877 INFO L495 AbstractCegarLoop]: Abstraction has 277 states and 296 transitions. [2022-07-13 10:09:59,877 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 5.413043478260869) internal successors, (249), 46 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 10:09:59,877 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 296 transitions. [2022-07-13 10:09:59,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-07-13 10:09:59,878 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 10:09:59,878 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 10:09:59,885 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-07-13 10:10:00,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-07-13 10:10:00,086 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 10:10:00,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 10:10:00,086 INFO L85 PathProgramCache]: Analyzing trace with hash 1809604481, now seen corresponding path program 10 times [2022-07-13 10:10:00,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 10:10:00,086 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344274835] [2022-07-13 10:10:00,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 10:10:00,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 10:10:00,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 10:10:00,253 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 19 proven. 24 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2022-07-13 10:10:00,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 10:10:00,254 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344274835] [2022-07-13 10:10:00,254 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [344274835] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 10:10:00,254 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [129300203] [2022-07-13 10:10:00,254 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-07-13 10:10:00,254 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 10:10:00,254 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 10:10:00,255 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 10:10:00,256 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-07-13 10:10:00,352 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-07-13 10:10:00,352 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 10:10:00,353 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-13 10:10:00,354 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 10:10:00,513 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 15 proven. 28 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2022-07-13 10:10:00,513 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 10:10:00,791 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 15 proven. 28 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2022-07-13 10:10:00,792 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [129300203] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 10:10:00,792 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 10:10:00,792 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 11] total 26 [2022-07-13 10:10:00,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967311437] [2022-07-13 10:10:00,792 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 10:10:00,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-07-13 10:10:00,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 10:10:00,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-07-13 10:10:00,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=531, Unknown=0, NotChecked=0, Total=650 [2022-07-13 10:10:00,793 INFO L87 Difference]: Start difference. First operand 277 states and 296 transitions. Second operand has 26 states, 26 states have (on average 4.615384615384615) internal successors, (120), 26 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 10:10:01,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 10:10:01,599 INFO L93 Difference]: Finished difference Result 481 states and 516 transitions. [2022-07-13 10:10:01,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-07-13 10:10:01,599 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 4.615384615384615) internal successors, (120), 26 states have internal predecessors, (120), 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 101 [2022-07-13 10:10:01,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 10:10:01,600 INFO L225 Difference]: With dead ends: 481 [2022-07-13 10:10:01,600 INFO L226 Difference]: Without dead ends: 237 [2022-07-13 10:10:01,600 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 195 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 674 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=381, Invalid=1875, Unknown=0, NotChecked=0, Total=2256 [2022-07-13 10:10:01,601 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 457 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 1191 mSolverCounterSat, 170 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 457 SdHoareTripleChecker+Valid, 216 SdHoareTripleChecker+Invalid, 1361 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 170 IncrementalHoareTripleChecker+Valid, 1191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-13 10:10:01,601 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [457 Valid, 216 Invalid, 1361 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [170 Valid, 1191 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-13 10:10:01,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2022-07-13 10:10:01,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 215. [2022-07-13 10:10:01,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 214 states have (on average 1.0560747663551402) internal successors, (226), 214 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 10:10:01,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 226 transitions. [2022-07-13 10:10:01,617 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 226 transitions. Word has length 101 [2022-07-13 10:10:01,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 10:10:01,618 INFO L495 AbstractCegarLoop]: Abstraction has 215 states and 226 transitions. [2022-07-13 10:10:01,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 4.615384615384615) internal successors, (120), 26 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 10:10:01,618 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 226 transitions. [2022-07-13 10:10:01,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-07-13 10:10:01,619 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 10:10:01,619 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 10:10:01,637 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-07-13 10:10:01,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-07-13 10:10:01,831 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 10:10:01,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 10:10:01,832 INFO L85 PathProgramCache]: Analyzing trace with hash -1663105360, now seen corresponding path program 11 times [2022-07-13 10:10:01,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 10:10:01,832 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294248451] [2022-07-13 10:10:01,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 10:10:01,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 10:10:01,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 10:10:03,937 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 11 proven. 181 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 10:10:03,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 10:10:03,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294248451] [2022-07-13 10:10:03,938 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [294248451] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 10:10:03,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [257412131] [2022-07-13 10:10:03,938 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-07-13 10:10:03,938 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 10:10:03,938 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 10:10:03,939 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 10:10:03,940 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-07-13 10:10:54,415 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2022-07-13 10:10:54,415 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 10:10:54,502 INFO L263 TraceCheckSpWp]: Trace formula consists of 412 conjuncts, 118 conjunts are in the unsatisfiable core [2022-07-13 10:10:54,508 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 10:10:54,657 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-07-13 10:10:54,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:10:54,694 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:10:54,694 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:10:54,695 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:10:54,696 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:10:54,697 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:10:54,697 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 52 [2022-07-13 10:10:54,750 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:10:54,750 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 25 [2022-07-13 10:10:54,789 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:10:54,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:10:54,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:10:54,791 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:10:54,791 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:10:54,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:10:54,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:10:54,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:10:54,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:10:54,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:10:54,797 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-13 10:10:54,798 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 10 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 54 treesize of output 64 [2022-07-13 10:10:54,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:10:54,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:10:54,855 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:10:54,856 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-13 10:10:54,856 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 37 [2022-07-13 10:10:54,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:10:54,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:10:54,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:10:54,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:10:54,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:10:54,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:10:54,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:10:54,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:10:54,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:10:54,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:10:54,922 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:10:54,922 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:10:54,923 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:10:54,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:10:54,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:10:54,926 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-13 10:10:54,926 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 15 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 63 treesize of output 76 [2022-07-13 10:10:54,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:10:54,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:10:54,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:10:54,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:10:54,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:10:54,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:10:54,998 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-13 10:10:54,998 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 44 treesize of output 49 [2022-07-13 10:10:55,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:10:55,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:10:55,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:10:55,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:10:55,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:10:55,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:10:55,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:10:55,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:10:55,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:10:55,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:10:55,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:10:55,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:10:55,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:10:55,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:10:55,075 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:10:55,076 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:10:55,076 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:10:55,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:10:55,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:10:55,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:10:55,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:10:55,082 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-13 10:10:55,082 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 21 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 72 treesize of output 88 [2022-07-13 10:10:57,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:10:57,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:10:57,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:10:57,114 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:10:57,114 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:10:57,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:10:57,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:10:57,116 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:10:57,117 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:10:57,117 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:10:57,119 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-13 10:10:57,119 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 56 treesize of output 64 [2022-07-13 10:10:57,171 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:10:57,171 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:10:57,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:10:57,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:10:57,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:10:57,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:10:57,174 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:10:57,174 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-13 10:10:57,175 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:10:57,176 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:10:57,176 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:10:57,177 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:10:57,177 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:10:57,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:10:57,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:10:57,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:10:57,182 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-13 10:10:57,182 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 81 treesize of output 91 [2022-07-13 10:10:57,622 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:10:57,623 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:10:57,624 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:10:57,624 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:10:57,625 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:10:57,625 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:10:57,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:10:57,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:10:57,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:10:57,628 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:10:57,629 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-13 10:10:57,630 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 56 treesize of output 64 [2022-07-13 10:10:57,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:10:57,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:10:57,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:10:57,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:10:57,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:10:57,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:10:57,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:10:57,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:10:57,650 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:10:57,650 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:10:57,651 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-13 10:10:57,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:10:57,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:10:57,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:10:57,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:10:57,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:10:57,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:10:57,658 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-13 10:10:57,658 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 16 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 99 treesize of output 91 [2022-07-13 10:10:58,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:10:58,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:10:58,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:10:58,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:10:58,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:10:58,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:10:58,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:10:58,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:10:58,684 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:10:58,684 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:10:58,686 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-13 10:10:58,686 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 56 treesize of output 64 [2022-07-13 10:10:58,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:10:58,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:10:58,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:10:58,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:10:58,705 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-13 10:10:58,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:10:58,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:10:58,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:10:58,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:10:58,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:10:58,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:10:58,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:10:58,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:10:58,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:10:58,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:10:58,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:10:58,713 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-13 10:10:58,713 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 15 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 72 treesize of output 88 [2022-07-13 10:11:00,753 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:11:00,754 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:11:00,754 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:11:00,755 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:11:00,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:11:00,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:11:00,758 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-13 10:11:00,758 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 47 treesize of output 52 [2022-07-13 10:11:00,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:11:00,774 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:11:00,775 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:11:00,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:11:00,777 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:11:00,777 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:11:00,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:11:00,779 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:11:00,779 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:11:00,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:11:00,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:11:00,781 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:11:00,782 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:11:00,782 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:11:00,793 INFO L356 Elim1Store]: treesize reduction 60, result has 16.7 percent of original size [2022-07-13 10:11:00,793 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 14 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 72 treesize of output 76 [2022-07-13 10:11:02,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:11:02,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:11:02,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:11:02,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:11:02,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:11:02,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:11:03,001 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-13 10:11:03,001 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 47 treesize of output 52 [2022-07-13 10:11:03,428 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:11:03,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:11:03,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:11:03,430 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:11:03,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:11:03,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:11:03,432 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:11:03,432 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:11:03,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:11:03,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:11:03,434 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-13 10:11:03,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:11:03,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:11:03,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:11:03,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:11:03,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:11:03,440 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-13 10:11:03,440 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 84 treesize of output 94 [2022-07-13 10:11:03,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:11:03,774 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:11:03,775 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:11:03,775 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:11:03,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:11:03,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:11:03,777 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:11:03,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:11:03,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:11:03,779 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:11:03,780 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-13 10:11:03,780 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 59 treesize of output 67 [2022-07-13 10:11:03,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:11:03,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:11:03,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:11:03,799 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:11:03,799 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-13 10:11:03,800 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:11:03,800 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:11:03,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:11:03,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:11:03,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:11:03,803 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:11:03,803 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:11:03,804 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:11:03,804 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:11:03,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:11:03,806 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:11:03,808 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-13 10:11:03,808 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 87 treesize of output 97 [2022-07-13 10:11:03,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:11:03,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:11:03,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:11:03,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:11:03,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:11:03,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:11:03,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:11:03,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:11:03,954 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:11:03,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:11:03,956 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-13 10:11:03,956 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 62 treesize of output 70 [2022-07-13 10:11:03,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:11:03,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:11:03,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:11:03,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:11:03,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:11:03,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:11:03,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:11:03,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:11:03,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:11:03,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:11:03,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:11:03,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:11:03,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:11:03,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:11:03,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:11:03,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:11:03,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:11:03,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:11:03,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:11:03,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:11:03,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:11:03,992 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-13 10:11:03,992 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 21 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 78 treesize of output 94 [2022-07-13 10:11:04,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:11:04,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:11:04,087 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:11:04,087 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:11:04,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:11:04,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:11:04,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:11:04,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:11:04,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:11:04,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:11:04,093 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-13 10:11:04,093 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 56 treesize of output 64 [2022-07-13 10:11:04,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:11:04,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:11:04,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:11:04,110 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:11:04,110 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:11:04,111 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:11:04,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:11:04,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:11:04,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:11:04,114 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:11:04,114 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:11:04,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:11:04,116 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:11:04,116 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:11:04,117 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:11:04,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:11:04,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:11:04,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:11:04,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:11:04,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 10:11:04,129 INFO L356 Elim1Store]: treesize reduction 34, result has 37.0 percent of original size [2022-07-13 10:11:04,130 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 20 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 72 treesize of output 96 [2022-07-13 10:11:04,683 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-13 10:11:04,683 INFO L390 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 3 new quantified variables, introduced 3 case distinctions, treesize of input 29 treesize of output 13 [2022-07-13 10:11:04,690 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 10 proven. 176 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-13 10:11:04,691 INFO L328 TraceCheckSpWp]: Computing backward predicates...