./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-patterns/array6_pattern.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6c24879c Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/array-patterns/array6_pattern.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 81db346fb66b40514998cf838e858b3f0793fe5c74d5812efa60193ab54d6833 --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-11 23:03:58,996 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-11 23:03:58,997 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-11 23:03:59,020 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-11 23:03:59,022 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-11 23:03:59,023 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-11 23:03:59,026 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-11 23:03:59,031 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-11 23:03:59,032 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-11 23:03:59,036 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-11 23:03:59,037 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-11 23:03:59,038 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-11 23:03:59,038 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-11 23:03:59,051 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-11 23:03:59,052 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-11 23:03:59,052 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-11 23:03:59,053 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-11 23:03:59,053 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-11 23:03:59,059 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-11 23:03:59,064 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-11 23:03:59,066 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-11 23:03:59,066 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-11 23:03:59,068 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-11 23:03:59,068 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-11 23:03:59,069 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-11 23:03:59,071 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-11 23:03:59,072 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-11 23:03:59,072 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-11 23:03:59,073 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-11 23:03:59,073 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-11 23:03:59,074 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-11 23:03:59,074 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-11 23:03:59,075 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-11 23:03:59,076 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-11 23:03:59,076 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-11 23:03:59,077 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-11 23:03:59,077 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-11 23:03:59,077 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-11 23:03:59,077 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-11 23:03:59,078 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-11 23:03:59,078 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-11 23:03:59,080 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-11 23:03:59,081 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-11 23:03:59,100 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-11 23:03:59,102 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-11 23:03:59,102 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-11 23:03:59,102 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-11 23:03:59,102 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-11 23:03:59,103 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-11 23:03:59,103 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-11 23:03:59,103 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-11 23:03:59,103 INFO L138 SettingsManager]: * Use SBE=true [2022-07-11 23:03:59,104 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-11 23:03:59,104 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-11 23:03:59,104 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-11 23:03:59,104 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-11 23:03:59,104 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-11 23:03:59,105 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-11 23:03:59,105 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-11 23:03:59,105 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-11 23:03:59,105 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-11 23:03:59,105 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-11 23:03:59,105 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-11 23:03:59,105 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-11 23:03:59,106 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-11 23:03:59,106 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-11 23:03:59,106 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-11 23:03:59,106 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-11 23:03:59,106 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-11 23:03:59,106 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-11 23:03:59,107 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-11 23:03:59,107 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-11 23:03:59,107 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-11 23:03:59,107 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-11 23:03:59,107 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-11 23:03:59,107 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-11 23:03:59,107 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 81db346fb66b40514998cf838e858b3f0793fe5c74d5812efa60193ab54d6833 [2022-07-11 23:03:59,263 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-11 23:03:59,275 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-11 23:03:59,277 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-11 23:03:59,277 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-11 23:03:59,278 INFO L275 PluginConnector]: CDTParser initialized [2022-07-11 23:03:59,278 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-patterns/array6_pattern.c [2022-07-11 23:03:59,338 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/60ddbeb8e/17c998b3bf5443aa8633bf7d0742c048/FLAG2f7a18875 [2022-07-11 23:03:59,715 INFO L306 CDTParser]: Found 1 translation units. [2022-07-11 23:03:59,716 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-patterns/array6_pattern.c [2022-07-11 23:03:59,720 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/60ddbeb8e/17c998b3bf5443aa8633bf7d0742c048/FLAG2f7a18875 [2022-07-11 23:03:59,729 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/60ddbeb8e/17c998b3bf5443aa8633bf7d0742c048 [2022-07-11 23:03:59,731 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-11 23:03:59,732 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-11 23:03:59,733 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-11 23:03:59,733 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-11 23:03:59,735 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-11 23:03:59,736 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.07 11:03:59" (1/1) ... [2022-07-11 23:03:59,737 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4303f159 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 11:03:59, skipping insertion in model container [2022-07-11 23:03:59,737 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.07 11:03:59" (1/1) ... [2022-07-11 23:03:59,741 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-11 23:03:59,752 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-11 23:03:59,872 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-patterns/array6_pattern.c[1356,1369] [2022-07-11 23:03:59,884 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-11 23:03:59,888 INFO L203 MainTranslator]: Completed pre-run [2022-07-11 23:03:59,895 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-patterns/array6_pattern.c[1356,1369] [2022-07-11 23:03:59,901 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-11 23:03:59,909 INFO L208 MainTranslator]: Completed translation [2022-07-11 23:03:59,909 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 11:03:59 WrapperNode [2022-07-11 23:03:59,909 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-11 23:03:59,910 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-11 23:03:59,910 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-11 23:03:59,910 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-11 23:03:59,914 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 11:03:59" (1/1) ... [2022-07-11 23:03:59,918 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 11:03:59" (1/1) ... [2022-07-11 23:03:59,950 INFO L137 Inliner]: procedures = 16, calls = 26, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 84 [2022-07-11 23:03:59,950 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-11 23:03:59,950 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-11 23:03:59,951 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-11 23:03:59,951 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-11 23:03:59,955 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 11:03:59" (1/1) ... [2022-07-11 23:03:59,956 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 11:03:59" (1/1) ... [2022-07-11 23:03:59,957 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 11:03:59" (1/1) ... [2022-07-11 23:03:59,957 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 11:03:59" (1/1) ... [2022-07-11 23:03:59,961 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 11:03:59" (1/1) ... [2022-07-11 23:03:59,963 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 11:03:59" (1/1) ... [2022-07-11 23:03:59,964 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 11:03:59" (1/1) ... [2022-07-11 23:03:59,965 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-11 23:03:59,966 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-11 23:03:59,966 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-11 23:03:59,966 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-11 23:03:59,966 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 11:03:59" (1/1) ... [2022-07-11 23:03:59,971 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-11 23:03:59,982 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-11 23:03:59,991 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) [2022-07-11 23:03:59,996 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 [2022-07-11 23:04:00,020 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-11 23:04:00,020 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-11 23:04:00,021 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-11 23:04:00,021 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-11 23:04:00,021 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-11 23:04:00,021 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-11 23:04:00,022 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-11 23:04:00,022 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-11 23:04:00,022 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-11 23:04:00,022 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-11 23:04:00,070 INFO L234 CfgBuilder]: Building ICFG [2022-07-11 23:04:00,071 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-11 23:04:00,204 INFO L275 CfgBuilder]: Performing block encoding [2022-07-11 23:04:00,212 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-11 23:04:00,212 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-07-11 23:04:00,213 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.07 11:04:00 BoogieIcfgContainer [2022-07-11 23:04:00,213 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-11 23:04:00,214 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-11 23:04:00,214 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-11 23:04:00,216 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-11 23:04:00,217 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.07 11:03:59" (1/3) ... [2022-07-11 23:04:00,217 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fed9907 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.07 11:04:00, skipping insertion in model container [2022-07-11 23:04:00,217 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 11:03:59" (2/3) ... [2022-07-11 23:04:00,217 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fed9907 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.07 11:04:00, skipping insertion in model container [2022-07-11 23:04:00,218 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.07 11:04:00" (3/3) ... [2022-07-11 23:04:00,218 INFO L111 eAbstractionObserver]: Analyzing ICFG array6_pattern.c [2022-07-11 23:04:00,227 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-11 23:04:00,228 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-11 23:04:00,256 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-11 23:04:00,261 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@461261d1, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@6fff946f [2022-07-11 23:04:00,261 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-11 23:04:00,264 INFO L276 IsEmpty]: Start isEmpty. Operand has 25 states, 20 states have (on average 1.5) internal successors, (30), 21 states have internal predecessors, (30), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-11 23:04:00,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-07-11 23:04:00,268 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:04:00,269 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-11 23:04:00,269 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:04:00,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:04:00,272 INFO L85 PathProgramCache]: Analyzing trace with hash -800294020, now seen corresponding path program 1 times [2022-07-11 23:04:00,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:04:00,278 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630795070] [2022-07-11 23:04:00,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:04:00,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:04:00,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:04:00,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-11 23:04:00,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:04:00,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-11 23:04:00,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:04:00,369 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630795070] [2022-07-11 23:04:00,369 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1630795070] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:04:00,370 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:04:00,370 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-11 23:04:00,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89093276] [2022-07-11 23:04:00,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:04:00,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-11 23:04:00,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:04:00,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-11 23:04:00,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-11 23:04:00,402 INFO L87 Difference]: Start difference. First operand has 25 states, 20 states have (on average 1.5) internal successors, (30), 21 states have internal predecessors, (30), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-11 23:04:00,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:04:00,416 INFO L93 Difference]: Finished difference Result 47 states and 66 transitions. [2022-07-11 23:04:00,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-11 23:04:00,417 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2022-07-11 23:04:00,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:04:00,421 INFO L225 Difference]: With dead ends: 47 [2022-07-11 23:04:00,421 INFO L226 Difference]: Without dead ends: 21 [2022-07-11 23:04:00,423 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-11 23:04:00,425 INFO L413 NwaCegarLoop]: 28 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, 28 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 [2022-07-11 23:04:00,426 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-11 23:04:00,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2022-07-11 23:04:00,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2022-07-11 23:04:00,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 states have internal predecessors, (20), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-11 23:04:00,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 24 transitions. [2022-07-11 23:04:00,448 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 24 transitions. Word has length 15 [2022-07-11 23:04:00,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:04:00,450 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 24 transitions. [2022-07-11 23:04:00,450 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-11 23:04:00,450 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 24 transitions. [2022-07-11 23:04:00,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-07-11 23:04:00,451 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:04:00,452 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-11 23:04:00,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-11 23:04:00,452 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:04:00,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:04:00,453 INFO L85 PathProgramCache]: Analyzing trace with hash -952637313, now seen corresponding path program 1 times [2022-07-11 23:04:00,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:04:00,453 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268960501] [2022-07-11 23:04:00,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:04:00,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:04:00,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:04:00,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-11 23:04:00,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:04:00,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-11 23:04:00,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:04:00,592 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-11 23:04:00,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:04:00,599 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268960501] [2022-07-11 23:04:00,599 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [268960501] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:04:00,599 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:04:00,599 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-11 23:04:00,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432773729] [2022-07-11 23:04:00,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:04:00,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-11 23:04:00,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:04:00,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-11 23:04:00,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-11 23:04:00,601 INFO L87 Difference]: Start difference. First operand 21 states and 24 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-11 23:04:00,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:04:00,625 INFO L93 Difference]: Finished difference Result 26 states and 29 transitions. [2022-07-11 23:04:00,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-11 23:04:00,625 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 22 [2022-07-11 23:04:00,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:04:00,626 INFO L225 Difference]: With dead ends: 26 [2022-07-11 23:04:00,626 INFO L226 Difference]: Without dead ends: 22 [2022-07-11 23:04:00,626 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-11 23:04:00,627 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 4 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-11 23:04:00,628 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 54 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-11 23:04:00,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2022-07-11 23:04:00,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2022-07-11 23:04:00,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 18 states have internal predecessors, (21), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-11 23:04:00,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2022-07-11 23:04:00,631 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 22 [2022-07-11 23:04:00,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:04:00,632 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2022-07-11 23:04:00,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-11 23:04:00,633 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2022-07-11 23:04:00,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-07-11 23:04:00,633 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:04:00,633 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-11 23:04:00,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-11 23:04:00,634 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:04:00,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:04:00,634 INFO L85 PathProgramCache]: Analyzing trace with hash -603190335, now seen corresponding path program 1 times [2022-07-11 23:04:00,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:04:00,635 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092350073] [2022-07-11 23:04:00,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:04:00,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:04:00,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:04:00,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-11 23:04:00,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:04:00,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-11 23:04:00,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:04:00,737 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-11 23:04:00,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:04:00,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092350073] [2022-07-11 23:04:00,745 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2092350073] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 23:04:00,745 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 23:04:00,745 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-11 23:04:00,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942380318] [2022-07-11 23:04:00,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 23:04:00,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-11 23:04:00,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:04:00,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-11 23:04:00,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-11 23:04:00,748 INFO L87 Difference]: Start difference. First operand 22 states and 25 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-11 23:04:00,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:04:00,792 INFO L93 Difference]: Finished difference Result 41 states and 46 transitions. [2022-07-11 23:04:00,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-11 23:04:00,793 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 24 [2022-07-11 23:04:00,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:04:00,793 INFO L225 Difference]: With dead ends: 41 [2022-07-11 23:04:00,794 INFO L226 Difference]: Without dead ends: 25 [2022-07-11 23:04:00,794 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-11 23:04:00,795 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 16 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-11 23:04:00,795 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 55 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-11 23:04:00,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2022-07-11 23:04:00,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 23. [2022-07-11 23:04:00,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 19 states have internal predecessors, (22), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-11 23:04:00,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2022-07-11 23:04:00,803 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 24 [2022-07-11 23:04:00,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:04:00,803 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2022-07-11 23:04:00,803 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-11 23:04:00,803 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2022-07-11 23:04:00,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-07-11 23:04:00,804 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:04:00,804 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-11 23:04:00,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-11 23:04:00,804 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:04:00,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:04:00,805 INFO L85 PathProgramCache]: Analyzing trace with hash 1366149955, now seen corresponding path program 1 times [2022-07-11 23:04:00,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:04:00,805 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118657003] [2022-07-11 23:04:00,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:04:00,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:04:00,822 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-11 23:04:00,822 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [395656589] [2022-07-11 23:04:00,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:04:00,823 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-11 23:04:00,828 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-11 23:04:00,832 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) [2022-07-11 23:04:00,833 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-11 23:04:00,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 23:04:00,903 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-11 23:04:00,907 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-11 23:04:01,005 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-11 23:04:01,006 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-11 23:04:01,104 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-11 23:04:01,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:04:01,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118657003] [2022-07-11 23:04:01,105 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-11 23:04:01,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [395656589] [2022-07-11 23:04:01,106 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [395656589] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-11 23:04:01,106 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-11 23:04:01,106 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2022-07-11 23:04:01,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319872291] [2022-07-11 23:04:01,109 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-11 23:04:01,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-11 23:04:01,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:04:01,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-11 23:04:01,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2022-07-11 23:04:01,113 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand has 11 states, 11 states have (on average 2.727272727272727) internal successors, (30), 11 states have internal predecessors, (30), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-11 23:04:01,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:04:01,276 INFO L93 Difference]: Finished difference Result 71 states and 78 transitions. [2022-07-11 23:04:01,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-11 23:04:01,277 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.727272727272727) internal successors, (30), 11 states have internal predecessors, (30), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 26 [2022-07-11 23:04:01,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:04:01,280 INFO L225 Difference]: With dead ends: 71 [2022-07-11 23:04:01,281 INFO L226 Difference]: Without dead ends: 43 [2022-07-11 23:04:01,282 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=112, Invalid=308, Unknown=0, NotChecked=0, Total=420 [2022-07-11 23:04:01,286 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 61 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-11 23:04:01,287 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 86 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-11 23:04:01,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2022-07-11 23:04:01,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 27. [2022-07-11 23:04:01,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 23 states have (on average 1.1304347826086956) internal successors, (26), 23 states have internal predecessors, (26), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-11 23:04:01,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2022-07-11 23:04:01,297 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 26 [2022-07-11 23:04:01,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:04:01,298 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 30 transitions. [2022-07-11 23:04:01,298 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.727272727272727) internal successors, (30), 11 states have internal predecessors, (30), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-11 23:04:01,298 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2022-07-11 23:04:01,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-07-11 23:04:01,299 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:04:01,299 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-11 23:04:01,316 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-07-11 23:04:01,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-11 23:04:01,503 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:04:01,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:04:01,504 INFO L85 PathProgramCache]: Analyzing trace with hash 1559224519, now seen corresponding path program 2 times [2022-07-11 23:04:01,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:04:01,504 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023146441] [2022-07-11 23:04:01,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:04:01,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:04:01,518 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-11 23:04:01,519 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [259784313] [2022-07-11 23:04:01,519 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-11 23:04:01,519 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-11 23:04:01,519 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-11 23:04:01,520 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) [2022-07-11 23:04:01,521 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-11 23:04:01,574 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-11 23:04:01,574 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-11 23:04:01,575 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-11 23:04:01,576 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-11 23:04:01,630 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-11 23:04:01,630 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-11 23:04:01,684 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-11 23:04:01,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 23:04:01,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023146441] [2022-07-11 23:04:01,684 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-11 23:04:01,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [259784313] [2022-07-11 23:04:01,685 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [259784313] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-11 23:04:01,685 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-11 23:04:01,685 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2022-07-11 23:04:01,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481029298] [2022-07-11 23:04:01,685 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-11 23:04:01,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-11 23:04:01,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 23:04:01,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-11 23:04:01,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2022-07-11 23:04:01,686 INFO L87 Difference]: Start difference. First operand 27 states and 30 transitions. Second operand has 12 states, 12 states have (on average 3.25) internal successors, (39), 12 states have internal predecessors, (39), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-11 23:04:01,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 23:04:01,803 INFO L93 Difference]: Finished difference Result 39 states and 42 transitions. [2022-07-11 23:04:01,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-11 23:04:01,804 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.25) internal successors, (39), 12 states have internal predecessors, (39), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 30 [2022-07-11 23:04:01,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 23:04:01,804 INFO L225 Difference]: With dead ends: 39 [2022-07-11 23:04:01,804 INFO L226 Difference]: Without dead ends: 35 [2022-07-11 23:04:01,805 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=103, Invalid=239, Unknown=0, NotChecked=0, Total=342 [2022-07-11 23:04:01,805 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 66 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-11 23:04:01,806 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 95 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-11 23:04:01,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2022-07-11 23:04:01,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2022-07-11 23:04:01,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 30 states have (on average 1.1) internal successors, (33), 30 states have internal predecessors, (33), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-11 23:04:01,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 37 transitions. [2022-07-11 23:04:01,810 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 37 transitions. Word has length 30 [2022-07-11 23:04:01,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 23:04:01,810 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 37 transitions. [2022-07-11 23:04:01,810 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.25) internal successors, (39), 12 states have internal predecessors, (39), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-11 23:04:01,810 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 37 transitions. [2022-07-11 23:04:01,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-07-11 23:04:01,811 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 23:04:01,811 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-11 23:04:01,852 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-11 23:04:02,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-11 23:04:02,028 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 23:04:02,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 23:04:02,028 INFO L85 PathProgramCache]: Analyzing trace with hash -1722352949, now seen corresponding path program 3 times [2022-07-11 23:04:02,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 23:04:02,028 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122621226] [2022-07-11 23:04:02,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 23:04:02,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 23:04:02,039 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-11 23:04:02,039 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [115968429] [2022-07-11 23:04:02,039 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-11 23:04:02,039 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-11 23:04:02,039 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-11 23:04:02,043 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) [2022-07-11 23:04:02,044 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-11 23:04:02,143 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-07-11 23:04:02,143 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-11 23:04:02,147 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 74 conjunts are in the unsatisfiable core [2022-07-11 23:04:02,151 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-11 23:04:02,178 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 10 treesize of output 8 [2022-07-11 23:04:02,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:02,203 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 37 [2022-07-11 23:04:02,208 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 15 [2022-07-11 23:04:02,213 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 33 treesize of output 32 [2022-07-11 23:04:02,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:02,287 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 39 [2022-07-11 23:04:02,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:02,293 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 22 [2022-07-11 23:04:02,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:02,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:02,299 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 44 [2022-07-11 23:04:02,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:02,369 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 50 [2022-07-11 23:04:02,375 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:02,391 INFO L356 Elim1Store]: treesize reduction 54, result has 23.9 percent of original size [2022-07-11 23:04:02,392 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 25 treesize of output 34 [2022-07-11 23:04:02,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:02,411 INFO L356 Elim1Store]: treesize reduction 53, result has 11.7 percent of original size [2022-07-11 23:04:02,412 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 52 treesize of output 60 [2022-07-11 23:04:02,941 INFO L356 Elim1Store]: treesize reduction 46, result has 9.8 percent of original size [2022-07-11 23:04:02,941 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 334 treesize of output 217 [2022-07-11 23:04:02,959 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:02,960 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 158 treesize of output 130 [2022-07-11 23:04:02,967 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 130 treesize of output 151 [2022-07-11 23:04:03,006 INFO L356 Elim1Store]: treesize reduction 116, result has 4.1 percent of original size [2022-07-11 23:04:03,007 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 4 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 6 new quantified variables, introduced 5 case distinctions, treesize of input 176 treesize of output 219 [2022-07-11 23:04:03,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:03,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:03,024 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:03,026 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:03,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:03,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:03,030 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:03,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:03,042 INFO L356 Elim1Store]: treesize reduction 30, result has 3.2 percent of original size [2022-07-11 23:04:03,042 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 4 select indices, 4 select index equivalence classes, 8 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 92 treesize of output 160 [2022-07-11 23:04:03,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:03,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:03,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:03,062 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:03,063 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:03,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:03,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:03,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:03,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:03,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:03,075 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:03,096 INFO L356 Elim1Store]: treesize reduction 72, result has 17.2 percent of original size [2022-07-11 23:04:03,096 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 11 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 52 treesize of output 82 [2022-07-11 23:04:03,242 INFO L356 Elim1Store]: treesize reduction 25, result has 16.7 percent of original size [2022-07-11 23:04:03,242 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 2 case distinctions, treesize of input 398 treesize of output 371 [2022-07-11 23:04:03,249 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 17 treesize of output 11 [2022-07-11 23:04:16,221 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-07-11 23:04:16,221 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 226 treesize of output 180 [2022-07-11 23:04:16,673 INFO L356 Elim1Store]: treesize reduction 54, result has 86.3 percent of original size [2022-07-11 23:04:16,673 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 9 select indices, 9 select index equivalence classes, 3 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 33 case distinctions, treesize of input 176 treesize of output 472 [2022-07-11 23:04:16,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:16,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:16,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-11 23:04:17,081 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-11 23:04:17,082 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 9 select indices, 9 select index equivalence classes, 6 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 30 case distinctions, treesize of input 321 treesize of output 587