./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-patterns/array9_pattern.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 26d01a9c Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/array-patterns/array9_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 8ae6792b63619c19d32145c9c656ded5ce2ab653945337eaf95cf4eb94965d3b --- Real Ultimate output --- This is Ultimate 0.2.2-?-26d01a9 [2023-02-16 23:48:32,365 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-16 23:48:32,367 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-16 23:48:32,384 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-16 23:48:32,384 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-16 23:48:32,385 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-16 23:48:32,385 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-16 23:48:32,387 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-16 23:48:32,388 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-16 23:48:32,388 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-16 23:48:32,389 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-16 23:48:32,393 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-16 23:48:32,393 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-16 23:48:32,397 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-16 23:48:32,400 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-16 23:48:32,402 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-16 23:48:32,403 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-16 23:48:32,405 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-16 23:48:32,406 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-16 23:48:32,407 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-16 23:48:32,410 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-16 23:48:32,411 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-16 23:48:32,412 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-16 23:48:32,413 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-16 23:48:32,415 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-16 23:48:32,416 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-16 23:48:32,416 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-16 23:48:32,417 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-16 23:48:32,417 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-16 23:48:32,418 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-16 23:48:32,419 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-16 23:48:32,420 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-16 23:48:32,420 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-16 23:48:32,421 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-16 23:48:32,422 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-16 23:48:32,422 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-16 23:48:32,423 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-16 23:48:32,423 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-16 23:48:32,423 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-16 23:48:32,424 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-16 23:48:32,425 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-16 23:48:32,425 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-02-16 23:48:32,442 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-16 23:48:32,443 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-16 23:48:32,443 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-16 23:48:32,443 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-16 23:48:32,444 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-16 23:48:32,444 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-16 23:48:32,444 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-16 23:48:32,445 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-16 23:48:32,445 INFO L138 SettingsManager]: * Use SBE=true [2023-02-16 23:48:32,445 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-16 23:48:32,445 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-16 23:48:32,446 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-16 23:48:32,446 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-16 23:48:32,446 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-16 23:48:32,446 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-16 23:48:32,446 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-16 23:48:32,446 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-16 23:48:32,447 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-16 23:48:32,447 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-16 23:48:32,447 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-16 23:48:32,447 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-16 23:48:32,447 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-16 23:48:32,447 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-16 23:48:32,447 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-16 23:48:32,448 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-16 23:48:32,448 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-16 23:48:32,448 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-16 23:48:32,448 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-16 23:48:32,448 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-16 23:48:32,448 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-16 23:48:32,449 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-16 23:48:32,449 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-16 23:48:32,449 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-16 23:48:32,449 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-16 23:48:32,449 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-16 23:48:32,449 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8ae6792b63619c19d32145c9c656ded5ce2ab653945337eaf95cf4eb94965d3b [2023-02-16 23:48:32,607 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-16 23:48:32,619 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-16 23:48:32,621 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-16 23:48:32,621 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-16 23:48:32,622 INFO L275 PluginConnector]: CDTParser initialized [2023-02-16 23:48:32,622 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-patterns/array9_pattern.c [2023-02-16 23:48:33,537 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-16 23:48:33,678 INFO L351 CDTParser]: Found 1 translation units. [2023-02-16 23:48:33,679 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-patterns/array9_pattern.c [2023-02-16 23:48:33,684 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/191beaa68/4ec563bcd3f147c5a8051160861f250f/FLAGa09e724fc [2023-02-16 23:48:33,700 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/191beaa68/4ec563bcd3f147c5a8051160861f250f [2023-02-16 23:48:33,702 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-16 23:48:33,703 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-16 23:48:33,704 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-16 23:48:33,704 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-16 23:48:33,706 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-16 23:48:33,707 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.02 11:48:33" (1/1) ... [2023-02-16 23:48:33,709 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@145cf896 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 11:48:33, skipping insertion in model container [2023-02-16 23:48:33,710 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.02 11:48:33" (1/1) ... [2023-02-16 23:48:33,715 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-16 23:48:33,728 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-16 23:48:33,822 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-patterns/array9_pattern.c[1352,1365] [2023-02-16 23:48:33,833 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-16 23:48:33,838 INFO L203 MainTranslator]: Completed pre-run [2023-02-16 23:48:33,851 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-patterns/array9_pattern.c[1352,1365] [2023-02-16 23:48:33,857 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-16 23:48:33,865 INFO L208 MainTranslator]: Completed translation [2023-02-16 23:48:33,865 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 11:48:33 WrapperNode [2023-02-16 23:48:33,865 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-16 23:48:33,866 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-16 23:48:33,866 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-16 23:48:33,866 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-16 23:48:33,870 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 11:48:33" (1/1) ... [2023-02-16 23:48:33,874 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 11:48:33" (1/1) ... [2023-02-16 23:48:33,885 INFO L138 Inliner]: procedures = 16, calls = 23, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 83 [2023-02-16 23:48:33,886 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-16 23:48:33,886 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-16 23:48:33,886 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-16 23:48:33,886 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-16 23:48:33,892 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 11:48:33" (1/1) ... [2023-02-16 23:48:33,892 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 11:48:33" (1/1) ... [2023-02-16 23:48:33,893 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 11:48:33" (1/1) ... [2023-02-16 23:48:33,894 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 11:48:33" (1/1) ... [2023-02-16 23:48:33,897 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 11:48:33" (1/1) ... [2023-02-16 23:48:33,899 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 11:48:33" (1/1) ... [2023-02-16 23:48:33,900 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 11:48:33" (1/1) ... [2023-02-16 23:48:33,900 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 11:48:33" (1/1) ... [2023-02-16 23:48:33,901 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-16 23:48:33,902 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-16 23:48:33,902 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-16 23:48:33,902 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-16 23:48:33,903 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 11:48:33" (1/1) ... [2023-02-16 23:48:33,906 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-16 23:48:33,913 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 23:48:33,921 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-02-16 23:48:33,934 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-02-16 23:48:33,951 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-16 23:48:33,951 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-02-16 23:48:33,952 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-02-16 23:48:33,952 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-16 23:48:33,952 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-02-16 23:48:33,952 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-02-16 23:48:33,953 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-16 23:48:33,953 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-16 23:48:33,953 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-02-16 23:48:33,953 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-02-16 23:48:34,006 INFO L235 CfgBuilder]: Building ICFG [2023-02-16 23:48:34,009 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-16 23:48:34,182 INFO L276 CfgBuilder]: Performing block encoding [2023-02-16 23:48:34,186 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-16 23:48:34,186 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2023-02-16 23:48:34,187 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.02 11:48:34 BoogieIcfgContainer [2023-02-16 23:48:34,187 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-16 23:48:34,189 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-16 23:48:34,189 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-16 23:48:34,191 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-16 23:48:34,191 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.02 11:48:33" (1/3) ... [2023-02-16 23:48:34,205 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14b86529 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.02 11:48:34, skipping insertion in model container [2023-02-16 23:48:34,205 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 11:48:33" (2/3) ... [2023-02-16 23:48:34,205 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14b86529 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.02 11:48:34, skipping insertion in model container [2023-02-16 23:48:34,205 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.02 11:48:34" (3/3) ... [2023-02-16 23:48:34,206 INFO L112 eAbstractionObserver]: Analyzing ICFG array9_pattern.c [2023-02-16 23:48:34,218 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-16 23:48:34,218 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-02-16 23:48:34,248 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-16 23:48:34,252 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@24db5821, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-16 23:48:34,252 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-02-16 23:48:34,255 INFO L276 IsEmpty]: Start isEmpty. Operand has 28 states, 23 states have (on average 1.4782608695652173) internal successors, (34), 24 states have internal predecessors, (34), 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) [2023-02-16 23:48:34,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-02-16 23:48:34,275 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 23:48:34,276 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 23:48:34,276 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 23:48:34,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 23:48:34,280 INFO L85 PathProgramCache]: Analyzing trace with hash 1127586545, now seen corresponding path program 1 times [2023-02-16 23:48:34,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 23:48:34,289 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153563615] [2023-02-16 23:48:34,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 23:48:34,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 23:48:34,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 23:48:34,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 23:48:34,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 23:48:34,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 23:48:34,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 23:48:34,462 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153563615] [2023-02-16 23:48:34,462 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1153563615] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 23:48:34,462 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 23:48:34,463 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-16 23:48:34,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707259035] [2023-02-16 23:48:34,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 23:48:34,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-02-16 23:48:34,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 23:48:34,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-02-16 23:48:34,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-16 23:48:34,490 INFO L87 Difference]: Start difference. First operand has 28 states, 23 states have (on average 1.4782608695652173) internal successors, (34), 24 states have internal predecessors, (34), 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 7.0) internal successors, (14), 2 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-16 23:48:34,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 23:48:34,503 INFO L93 Difference]: Finished difference Result 53 states and 74 transitions. [2023-02-16 23:48:34,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-02-16 23:48:34,504 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 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 16 [2023-02-16 23:48:34,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 23:48:34,508 INFO L225 Difference]: With dead ends: 53 [2023-02-16 23:48:34,508 INFO L226 Difference]: Without dead ends: 24 [2023-02-16 23:48:34,510 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 [2023-02-16 23:48:34,512 INFO L413 NwaCegarLoop]: 32 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, 32 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-16 23:48:34,513 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-16 23:48:34,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2023-02-16 23:48:34,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2023-02-16 23:48:34,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 20 states have (on average 1.2) internal successors, (24), 20 states have internal predecessors, (24), 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) [2023-02-16 23:48:34,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2023-02-16 23:48:34,544 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 16 [2023-02-16 23:48:34,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 23:48:34,545 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2023-02-16 23:48:34,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-16 23:48:34,545 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2023-02-16 23:48:34,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-02-16 23:48:34,548 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 23:48:34,548 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] [2023-02-16 23:48:34,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-02-16 23:48:34,549 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 23:48:34,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 23:48:34,551 INFO L85 PathProgramCache]: Analyzing trace with hash 1008571545, now seen corresponding path program 1 times [2023-02-16 23:48:34,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 23:48:34,551 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608007835] [2023-02-16 23:48:34,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 23:48:34,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 23:48:34,586 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-16 23:48:34,587 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [578806004] [2023-02-16 23:48:34,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 23:48:34,587 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 23:48:34,587 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 23:48:34,590 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-16 23:48:34,602 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-16 23:48:34,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 23:48:34,683 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 7 conjunts are in the unsatisfiable core [2023-02-16 23:48:34,687 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 23:48:34,748 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 23:48:34,749 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-16 23:48:34,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 23:48:34,749 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608007835] [2023-02-16 23:48:34,749 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-16 23:48:34,752 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [578806004] [2023-02-16 23:48:34,752 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [578806004] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 23:48:34,753 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 23:48:34,753 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-02-16 23:48:34,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716602469] [2023-02-16 23:48:34,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 23:48:34,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-16 23:48:34,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 23:48:34,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-16 23:48:34,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-02-16 23:48:34,757 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand has 6 states, 6 states have (on average 3.5) internal successors, (21), 5 states have internal predecessors, (21), 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) [2023-02-16 23:48:34,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 23:48:34,842 INFO L93 Difference]: Finished difference Result 50 states and 57 transitions. [2023-02-16 23:48:34,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-02-16 23:48:34,843 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 5 states have internal predecessors, (21), 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) Word has length 25 [2023-02-16 23:48:34,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 23:48:34,844 INFO L225 Difference]: With dead ends: 50 [2023-02-16 23:48:34,844 INFO L226 Difference]: Without dead ends: 32 [2023-02-16 23:48:34,844 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2023-02-16 23:48:34,845 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 27 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-16 23:48:34,846 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 60 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-16 23:48:34,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2023-02-16 23:48:34,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2023-02-16 23:48:34,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 25 states have (on average 1.16) internal successors, (29), 25 states have internal predecessors, (29), 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) [2023-02-16 23:48:34,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2023-02-16 23:48:34,853 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 25 [2023-02-16 23:48:34,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 23:48:34,853 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2023-02-16 23:48:34,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 5 states have internal predecessors, (21), 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) [2023-02-16 23:48:34,854 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2023-02-16 23:48:34,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-02-16 23:48:34,854 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 23:48:34,855 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, 1, 1, 1] [2023-02-16 23:48:34,859 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-02-16 23:48:35,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 23:48:35,060 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 23:48:35,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 23:48:35,061 INFO L85 PathProgramCache]: Analyzing trace with hash 1890411897, now seen corresponding path program 1 times [2023-02-16 23:48:35,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 23:48:35,061 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633413022] [2023-02-16 23:48:35,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 23:48:35,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 23:48:35,076 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-16 23:48:35,077 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1811700682] [2023-02-16 23:48:35,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 23:48:35,077 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 23:48:35,077 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 23:48:35,079 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-16 23:48:35,121 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-02-16 23:48:35,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 23:48:35,143 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 49 conjunts are in the unsatisfiable core [2023-02-16 23:48:35,146 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 23:48:35,178 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2023-02-16 23:48:35,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 23:48:35,195 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 18 [2023-02-16 23:48:35,200 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2023-02-16 23:48:35,340 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-16 23:48:35,341 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-16 23:48:35,342 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-16 23:48:35,342 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 38 treesize of output 68 [2023-02-16 23:48:35,500 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-16 23:48:35,501 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-16 23:48:35,503 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-16 23:48:35,505 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-16 23:48:35,506 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 1 disjoint index pairs (out of 28 index pairs), introduced 6 new quantified variables, introduced 26 case distinctions, treesize of input 224 treesize of output 299