./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loop-acceleration/simple_1-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 574ddb4e 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/loop-acceleration/simple_1-2.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 7922cbf7e8f9780d3e8e620cf25362ae75252990a9db15252dbdfd9dda70dad0 --- Real Ultimate output --- This is Ultimate 0.2.2-?-574ddb4 [2023-02-18 15:27:10,613 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-18 15:27:10,615 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-18 15:27:10,644 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-18 15:27:10,644 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-18 15:27:10,645 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-18 15:27:10,645 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-18 15:27:10,647 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-18 15:27:10,649 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-18 15:27:10,652 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-18 15:27:10,653 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-18 15:27:10,655 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-18 15:27:10,656 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-18 15:27:10,657 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-18 15:27:10,658 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-18 15:27:10,660 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-18 15:27:10,660 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-18 15:27:10,661 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-18 15:27:10,662 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-18 15:27:10,665 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-18 15:27:10,667 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-18 15:27:10,667 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-18 15:27:10,669 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-18 15:27:10,669 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-18 15:27:10,672 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-18 15:27:10,672 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-18 15:27:10,672 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-18 15:27:10,673 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-18 15:27:10,674 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-18 15:27:10,674 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-18 15:27:10,674 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-18 15:27:10,675 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-18 15:27:10,676 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-18 15:27:10,677 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-18 15:27:10,677 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-18 15:27:10,678 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-18 15:27:10,678 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-18 15:27:10,678 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-18 15:27:10,678 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-18 15:27:10,679 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-18 15:27:10,680 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-18 15:27:10,680 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-02-18 15:27:10,702 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-18 15:27:10,702 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-18 15:27:10,702 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-18 15:27:10,703 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-18 15:27:10,703 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-18 15:27:10,703 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-18 15:27:10,704 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-18 15:27:10,704 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-18 15:27:10,704 INFO L138 SettingsManager]: * Use SBE=true [2023-02-18 15:27:10,704 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-18 15:27:10,705 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-18 15:27:10,705 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-18 15:27:10,705 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-18 15:27:10,705 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-18 15:27:10,705 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-18 15:27:10,705 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-18 15:27:10,705 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-18 15:27:10,706 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-18 15:27:10,706 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-18 15:27:10,706 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-18 15:27:10,706 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-18 15:27:10,706 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-18 15:27:10,706 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-18 15:27:10,706 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-18 15:27:10,707 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-18 15:27:10,707 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-18 15:27:10,707 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-18 15:27:10,707 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-18 15:27:10,707 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-18 15:27:10,707 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-18 15:27:10,708 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-18 15:27:10,708 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-18 15:27:10,708 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-18 15:27:10,708 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-18 15:27:10,708 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-18 15:27:10,708 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7922cbf7e8f9780d3e8e620cf25362ae75252990a9db15252dbdfd9dda70dad0 [2023-02-18 15:27:10,916 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-18 15:27:10,932 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-18 15:27:10,934 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-18 15:27:10,934 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-18 15:27:10,935 INFO L275 PluginConnector]: CDTParser initialized [2023-02-18 15:27:10,935 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-acceleration/simple_1-2.c [2023-02-18 15:27:11,776 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-18 15:27:11,900 INFO L351 CDTParser]: Found 1 translation units. [2023-02-18 15:27:11,901 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-acceleration/simple_1-2.c [2023-02-18 15:27:11,904 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/954a080ad/227615da3c5c4199b0c97c88fd64d13f/FLAGc1513eddb [2023-02-18 15:27:11,913 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/954a080ad/227615da3c5c4199b0c97c88fd64d13f [2023-02-18 15:27:11,915 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-18 15:27:11,916 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-18 15:27:11,918 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-18 15:27:11,918 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-18 15:27:11,920 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-18 15:27:11,921 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.02 03:27:11" (1/1) ... [2023-02-18 15:27:11,921 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@106a68da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 03:27:11, skipping insertion in model container [2023-02-18 15:27:11,921 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.02 03:27:11" (1/1) ... [2023-02-18 15:27:11,926 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-18 15:27:11,936 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-18 15:27:12,093 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/loop-acceleration/simple_1-2.c[322,335] [2023-02-18 15:27:12,102 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-18 15:27:12,111 INFO L203 MainTranslator]: Completed pre-run [2023-02-18 15:27:12,120 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/loop-acceleration/simple_1-2.c[322,335] [2023-02-18 15:27:12,121 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-18 15:27:12,130 INFO L208 MainTranslator]: Completed translation [2023-02-18 15:27:12,131 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 03:27:12 WrapperNode [2023-02-18 15:27:12,131 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-18 15:27:12,132 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-18 15:27:12,132 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-18 15:27:12,132 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-18 15:27:12,137 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 03:27:12" (1/1) ... [2023-02-18 15:27:12,141 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 03:27:12" (1/1) ... [2023-02-18 15:27:12,154 INFO L138 Inliner]: procedures = 12, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 23 [2023-02-18 15:27:12,154 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-18 15:27:12,155 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-18 15:27:12,155 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-18 15:27:12,155 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-18 15:27:12,160 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 03:27:12" (1/1) ... [2023-02-18 15:27:12,160 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 03:27:12" (1/1) ... [2023-02-18 15:27:12,162 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 03:27:12" (1/1) ... [2023-02-18 15:27:12,162 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 03:27:12" (1/1) ... [2023-02-18 15:27:12,164 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 03:27:12" (1/1) ... [2023-02-18 15:27:12,166 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 03:27:12" (1/1) ... [2023-02-18 15:27:12,169 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 03:27:12" (1/1) ... [2023-02-18 15:27:12,170 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 03:27:12" (1/1) ... [2023-02-18 15:27:12,172 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-18 15:27:12,173 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-18 15:27:12,173 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-18 15:27:12,173 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-18 15:27:12,174 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 03:27:12" (1/1) ... [2023-02-18 15:27:12,178 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-18 15:27:12,184 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 15:27:12,194 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) [2023-02-18 15:27:12,213 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 [2023-02-18 15:27:12,224 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-18 15:27:12,224 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-18 15:27:12,224 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-18 15:27:12,224 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-18 15:27:12,263 INFO L235 CfgBuilder]: Building ICFG [2023-02-18 15:27:12,264 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-18 15:27:12,327 INFO L276 CfgBuilder]: Performing block encoding [2023-02-18 15:27:12,331 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-18 15:27:12,331 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2023-02-18 15:27:12,332 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.02 03:27:12 BoogieIcfgContainer [2023-02-18 15:27:12,332 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-18 15:27:12,333 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-18 15:27:12,333 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-18 15:27:12,335 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-18 15:27:12,335 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.02 03:27:11" (1/3) ... [2023-02-18 15:27:12,336 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@adfbe69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.02 03:27:12, skipping insertion in model container [2023-02-18 15:27:12,336 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 03:27:12" (2/3) ... [2023-02-18 15:27:12,336 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@adfbe69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.02 03:27:12, skipping insertion in model container [2023-02-18 15:27:12,336 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.02 03:27:12" (3/3) ... [2023-02-18 15:27:12,337 INFO L112 eAbstractionObserver]: Analyzing ICFG simple_1-2.c [2023-02-18 15:27:12,349 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-18 15:27:12,349 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-02-18 15:27:12,376 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-18 15:27:12,380 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;@1710a201, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-18 15:27:12,380 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-02-18 15:27:12,382 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 15:27:12,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-02-18 15:27:12,386 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 15:27:12,386 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-02-18 15:27:12,386 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 15:27:12,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 15:27:12,390 INFO L85 PathProgramCache]: Analyzing trace with hash 889633835, now seen corresponding path program 1 times [2023-02-18 15:27:12,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 15:27:12,395 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790502883] [2023-02-18 15:27:12,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 15:27:12,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 15:27:12,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 15:27:12,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 15:27:12,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 15:27:12,532 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790502883] [2023-02-18 15:27:12,532 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [790502883] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 15:27:12,532 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 15:27:12,532 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-18 15:27:12,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608351083] [2023-02-18 15:27:12,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 15:27:12,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-18 15:27:12,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 15:27:12,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-18 15:27:12,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-18 15:27:12,554 INFO L87 Difference]: Start difference. First operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 15:27:12,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 15:27:12,568 INFO L93 Difference]: Finished difference Result 20 states and 24 transitions. [2023-02-18 15:27:12,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-18 15:27:12,570 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-02-18 15:27:12,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 15:27:12,575 INFO L225 Difference]: With dead ends: 20 [2023-02-18 15:27:12,575 INFO L226 Difference]: Without dead ends: 8 [2023-02-18 15:27:12,577 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-18 15:27:12,579 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 0 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-18 15:27:12,580 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 17 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 15:27:12,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2023-02-18 15:27:12,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2023-02-18 15:27:12,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 15:27:12,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2023-02-18 15:27:12,616 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 6 [2023-02-18 15:27:12,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 15:27:12,616 INFO L495 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2023-02-18 15:27:12,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 15:27:12,616 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2023-02-18 15:27:12,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-02-18 15:27:12,617 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 15:27:12,617 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-02-18 15:27:12,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-02-18 15:27:12,617 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 15:27:12,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 15:27:12,618 INFO L85 PathProgramCache]: Analyzing trace with hash 1810510480, now seen corresponding path program 1 times [2023-02-18 15:27:12,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 15:27:12,618 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119146704] [2023-02-18 15:27:12,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 15:27:12,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 15:27:12,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 15:27:12,690 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 15:27:12,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 15:27:12,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119146704] [2023-02-18 15:27:12,691 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1119146704] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 15:27:12,691 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1218983765] [2023-02-18 15:27:12,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 15:27:12,691 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 15:27:12,691 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 15:27:12,694 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) [2023-02-18 15:27:12,695 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-18 15:27:12,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 15:27:12,732 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 5 conjunts are in the unsatisfiable core [2023-02-18 15:27:12,734 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 15:27:12,751 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 15:27:12,752 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 15:27:12,770 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 15:27:12,770 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1218983765] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 15:27:12,770 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 15:27:12,770 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2023-02-18 15:27:12,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728853634] [2023-02-18 15:27:12,771 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 15:27:12,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-02-18 15:27:12,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 15:27:12,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-02-18 15:27:12,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2023-02-18 15:27:12,772 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 15:27:12,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 15:27:12,794 INFO L93 Difference]: Finished difference Result 15 states and 17 transitions. [2023-02-18 15:27:12,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-18 15:27:12,794 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2023-02-18 15:27:12,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 15:27:12,795 INFO L225 Difference]: With dead ends: 15 [2023-02-18 15:27:12,795 INFO L226 Difference]: Without dead ends: 11 [2023-02-18 15:27:12,795 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 3 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=30, Unknown=0, NotChecked=0, Total=56 [2023-02-18 15:27:12,796 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 0 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-18 15:27:12,797 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 12 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 15:27:12,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2023-02-18 15:27:12,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2023-02-18 15:27:12,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.1) internal successors, (11), 10 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 15:27:12,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2023-02-18 15:27:12,799 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 7 [2023-02-18 15:27:12,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 15:27:12,799 INFO L495 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2023-02-18 15:27:12,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 15:27:12,799 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2023-02-18 15:27:12,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-02-18 15:27:12,800 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 15:27:12,800 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1] [2023-02-18 15:27:12,806 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-02-18 15:27:13,004 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 [2023-02-18 15:27:13,004 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 15:27:13,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 15:27:13,005 INFO L85 PathProgramCache]: Analyzing trace with hash -1922847381, now seen corresponding path program 2 times [2023-02-18 15:27:13,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 15:27:13,005 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015939031] [2023-02-18 15:27:13,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 15:27:13,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 15:27:13,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 15:27:13,131 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 15:27:13,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 15:27:13,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015939031] [2023-02-18 15:27:13,131 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2015939031] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 15:27:13,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [55208976] [2023-02-18 15:27:13,132 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-18 15:27:13,132 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 15:27:13,132 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 15:27:13,137 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) [2023-02-18 15:27:13,139 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-02-18 15:27:13,169 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-18 15:27:13,169 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 15:27:13,170 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 11 conjunts are in the unsatisfiable core [2023-02-18 15:27:13,171 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 15:27:13,215 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 15:27:13,215 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 15:27:13,275 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 15:27:13,276 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [55208976] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 15:27:13,276 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 15:27:13,276 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2023-02-18 15:27:13,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669844725] [2023-02-18 15:27:13,276 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 15:27:13,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-02-18 15:27:13,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 15:27:13,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-02-18 15:27:13,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=98, Unknown=0, NotChecked=0, Total=156 [2023-02-18 15:27:13,282 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand has 13 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 13 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 15:27:13,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 15:27:13,414 INFO L93 Difference]: Finished difference Result 21 states and 26 transitions. [2023-02-18 15:27:13,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-02-18 15:27:13,415 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 13 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2023-02-18 15:27:13,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 15:27:13,416 INFO L225 Difference]: With dead ends: 21 [2023-02-18 15:27:13,416 INFO L226 Difference]: Without dead ends: 17 [2023-02-18 15:27:13,416 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 10 SyntacticMatches, 5 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=110, Invalid=162, Unknown=0, NotChecked=0, Total=272 [2023-02-18 15:27:13,417 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 0 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-18 15:27:13,417 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 24 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 15:27:13,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2023-02-18 15:27:13,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2023-02-18 15:27:13,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.0625) internal successors, (17), 16 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 15:27:13,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2023-02-18 15:27:13,421 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 10 [2023-02-18 15:27:13,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 15:27:13,421 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2023-02-18 15:27:13,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 13 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 15:27:13,421 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2023-02-18 15:27:13,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-02-18 15:27:13,421 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 15:27:13,421 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1] [2023-02-18 15:27:13,437 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-02-18 15:27:13,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-02-18 15:27:13,627 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 15:27:13,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 15:27:13,628 INFO L85 PathProgramCache]: Analyzing trace with hash 1628318539, now seen corresponding path program 3 times [2023-02-18 15:27:13,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 15:27:13,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568452114] [2023-02-18 15:27:13,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 15:27:13,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 15:27:13,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 15:27:13,770 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 15:27:13,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 15:27:13,770 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568452114] [2023-02-18 15:27:13,770 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1568452114] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 15:27:13,772 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [919969732] [2023-02-18 15:27:13,772 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-18 15:27:13,774 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 15:27:13,774 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 15:27:13,775 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 15:27:13,778 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-02-18 15:27:13,824 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2023-02-18 15:27:13,824 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 15:27:13,826 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 23 conjunts are in the unsatisfiable core [2023-02-18 15:27:13,827 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 15:27:13,946 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 15:27:13,946 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 15:27:14,152 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 15:27:14,152 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [919969732] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 15:27:14,153 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 15:27:14,153 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2023-02-18 15:27:14,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272863487] [2023-02-18 15:27:14,153 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 15:27:14,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-02-18 15:27:14,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 15:27:14,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-02-18 15:27:14,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=410, Unknown=0, NotChecked=0, Total=600 [2023-02-18 15:27:14,155 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand has 25 states, 25 states have (on average 1.2) internal successors, (30), 25 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 15:27:15,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 15:27:15,519 INFO L93 Difference]: Finished difference Result 33 states and 44 transitions. [2023-02-18 15:27:15,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-02-18 15:27:15,519 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.2) internal successors, (30), 25 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2023-02-18 15:27:15,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 15:27:15,520 INFO L225 Difference]: With dead ends: 33 [2023-02-18 15:27:15,520 INFO L226 Difference]: Without dead ends: 29 [2023-02-18 15:27:15,521 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 10 SyntacticMatches, 11 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=440, Invalid=750, Unknown=0, NotChecked=0, Total=1190 [2023-02-18 15:27:15,521 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 0 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-18 15:27:15,522 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 42 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-18 15:27:15,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2023-02-18 15:27:15,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2023-02-18 15:27:15,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 28 states have (on average 1.0357142857142858) internal successors, (29), 28 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 15:27:15,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 29 transitions. [2023-02-18 15:27:15,527 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 29 transitions. Word has length 16 [2023-02-18 15:27:15,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 15:27:15,527 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 29 transitions. [2023-02-18 15:27:15,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.2) internal successors, (30), 25 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 15:27:15,527 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 29 transitions. [2023-02-18 15:27:15,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-02-18 15:27:15,528 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 15:27:15,528 INFO L195 NwaCegarLoop]: trace histogram [22, 1, 1, 1, 1, 1, 1] [2023-02-18 15:27:15,539 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-02-18 15:27:15,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 15:27:15,739 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 15:27:15,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 15:27:15,740 INFO L85 PathProgramCache]: Analyzing trace with hash 1394044683, now seen corresponding path program 4 times [2023-02-18 15:27:15,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 15:27:15,740 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275454977] [2023-02-18 15:27:15,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 15:27:15,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 15:27:15,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 15:27:16,146 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 15:27:16,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 15:27:16,146 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275454977] [2023-02-18 15:27:16,146 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1275454977] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 15:27:16,146 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1389147974] [2023-02-18 15:27:16,146 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-02-18 15:27:16,146 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 15:27:16,146 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 15:27:16,147 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 15:27:16,150 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-02-18 15:27:16,188 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-02-18 15:27:16,188 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 15:27:16,189 WARN L261 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 53 conjunts are in the unsatisfiable core [2023-02-18 15:27:16,190 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 15:27:16,477 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 15:27:16,477 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 15:27:17,195 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2023-02-18 15:27:17,195 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1389147974] provided 1 perfect and 1 imperfect interpolant sequences [2023-02-18 15:27:17,195 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-02-18 15:27:17,196 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [25, 26] total 30 [2023-02-18 15:27:17,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983977294] [2023-02-18 15:27:17,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 15:27:17,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-18 15:27:17,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 15:27:17,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-18 15:27:17,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=742, Unknown=0, NotChecked=0, Total=870 [2023-02-18 15:27:17,197 INFO L87 Difference]: Start difference. First operand 29 states and 29 transitions. Second operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 15:27:17,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 15:27:17,224 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions. [2023-02-18 15:27:17,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-18 15:27:17,224 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2023-02-18 15:27:17,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 15:27:17,224 INFO L225 Difference]: With dead ends: 29 [2023-02-18 15:27:17,224 INFO L226 Difference]: Without dead ends: 0 [2023-02-18 15:27:17,225 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 9 SyntacticMatches, 43 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=133, Invalid=797, Unknown=0, NotChecked=0, Total=930 [2023-02-18 15:27:17,226 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 2 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-18 15:27:17,226 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 5 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 15:27:17,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-02-18 15:27:17,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-02-18 15:27:17,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 15:27:17,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-02-18 15:27:17,230 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 28 [2023-02-18 15:27:17,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 15:27:17,230 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-02-18 15:27:17,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 15:27:17,230 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-02-18 15:27:17,230 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-02-18 15:27:17,232 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-02-18 15:27:17,239 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-02-18 15:27:17,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 15:27:17,438 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-02-18 15:27:17,442 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-02-18 15:27:17,442 INFO L895 garLoopResultBuilder]: At program point L15-2(lines 15 17) the Hoare annotation is: (let ((.cse13 (mod |ULTIMATE.start_main_~x~0#1| 2)) (.cse16 (mod |ULTIMATE.start_main_~x~0#1| 4294967296))) (let ((.cse14 (< .cse16 0)) (.cse15 (= 0 .cse13))) (let ((.cse0 (+ |ULTIMATE.start_main_~x~0#1| (- 2))) (.cse8 (< (mod (+ |ULTIMATE.start_main_~x~0#1| 14) 4294967296) 268435455)) (.cse12 (< (mod (+ |ULTIMATE.start_main_~x~0#1| 18) 4294967296) 268435455)) (.cse9 (< (mod (+ |ULTIMATE.start_main_~x~0#1| 16) 4294967296) 268435455)) (.cse10 (< (mod (+ |ULTIMATE.start_main_~x~0#1| 12) 4294967296) 268435455)) (.cse6 (< (mod (+ |ULTIMATE.start_main_~x~0#1| 8) 4294967296) 268435455)) (.cse3 (< (mod (+ |ULTIMATE.start_main_~x~0#1| 2) 4294967296) 268435455)) (.cse4 (< (mod (+ |ULTIMATE.start_main_~x~0#1| 4) 4294967296) 268435455)) (.cse7 (< (mod (+ |ULTIMATE.start_main_~x~0#1| 6) 4294967296) 268435455)) (.cse11 (< (mod (+ |ULTIMATE.start_main_~x~0#1| 10) 4294967296) 268435455)) (.cse1 (or (= 0 (mod .cse13 4294967296)) (and .cse14 (not .cse15)))) (.cse5 (< .cse16 268435455)) (.cse2 (or (= 0 (mod (+ .cse13 4294967294) 4294967296)) (not .cse14) .cse15))) (or (and (<= 0 .cse0) .cse1 (= |ULTIMATE.start_main_~x~0#1| (+ 2 0)) (<= |ULTIMATE.start_main_~x~0#1| 2) .cse2) (and .cse3 .cse4 .cse1 .cse5 .cse2) (and .cse3 .cse1 (<= 0 (+ |ULTIMATE.start_main_~x~0#1| (- 4))) (<= |ULTIMATE.start_main_~x~0#1| 4) .cse5 .cse2) (and .cse6 .cse3 .cse4 .cse7 .cse1 .cse5 .cse2) (and (<= .cse0 18) (<= 0 (+ .cse0 (- 18))) .cse1 .cse2) (and .cse3 (<= 0 (+ |ULTIMATE.start_main_~x~0#1| (- 16))) (<= |ULTIMATE.start_main_~x~0#1| 16) .cse1 .cse5 .cse2) (and .cse3 .cse4 .cse7 (<= |ULTIMATE.start_main_~x~0#1| 12) .cse1 (<= 0 (+ |ULTIMATE.start_main_~x~0#1| (- 12))) .cse5 .cse2) (and .cse6 .cse3 .cse4 .cse8 .cse7 .cse9 .cse10 .cse1 .cse11 .cse5 .cse2) (and .cse6 .cse3 .cse4 .cse7 .cse10 .cse1 .cse11 .cse5 .cse2) (and .cse3 .cse4 .cse7 .cse1 .cse5 .cse2) (and (<= 0 (+ .cse0 (- 6))) (<= |ULTIMATE.start_main_~x~0#1| 8) (<= .cse0 6) (<= 0 (+ |ULTIMATE.start_main_~x~0#1| (- 8))) .cse1 .cse2) (and .cse1 .cse2) (and .cse6 .cse3 .cse4 .cse8 .cse7 .cse9 .cse10 .cse12 .cse1 .cse11 .cse5 .cse2) (and .cse3 .cse4 (<= 0 (+ |ULTIMATE.start_main_~x~0#1| (- 14))) .cse1 .cse5 (<= |ULTIMATE.start_main_~x~0#1| 14) .cse2) (and .cse3 .cse1 .cse5 .cse2) (and (<= 0 (+ |ULTIMATE.start_main_~x~0#1| (- 6))) .cse1 (<= |ULTIMATE.start_main_~x~0#1| 6) .cse5 .cse2) (and .cse6 .cse3 .cse4 .cse8 .cse7 .cse10 .cse1 .cse11 .cse5 .cse2) (and (<= |ULTIMATE.start_main_~x~0#1| 18) (<= 0 (+ |ULTIMATE.start_main_~x~0#1| (- 18))) .cse1 .cse5 .cse2) (and (= |ULTIMATE.start_main_~x~0#1| 0) .cse1 .cse2) (and .cse6 (<= |ULTIMATE.start_main_~x~0#1| 10) .cse3 .cse4 .cse7 .cse1 .cse5 (<= 0 (+ |ULTIMATE.start_main_~x~0#1| (- 10))) .cse2) (and .cse3 .cse8 .cse7 .cse12 .cse2 .cse6 .cse4 .cse9 .cse10 (< (mod (+ |ULTIMATE.start_main_~x~0#1| 20) 4294967296) 268435455) .cse1 .cse11 .cse5) (and .cse6 .cse3 .cse4 .cse7 .cse1 .cse11 .cse5 .cse2) (and .cse1 .cse5 .cse2))))) [2023-02-18 15:27:17,442 INFO L899 garLoopResultBuilder]: For program point L15-3(lines 15 17) no Hoare annotation was computed. [2023-02-18 15:27:17,442 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-02-18 15:27:17,443 INFO L899 garLoopResultBuilder]: For program point L7(line 7) no Hoare annotation was computed. [2023-02-18 15:27:17,443 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2023-02-18 15:27:17,443 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2023-02-18 15:27:17,443 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 7) no Hoare annotation was computed. [2023-02-18 15:27:17,443 INFO L899 garLoopResultBuilder]: For program point L12(lines 12 20) no Hoare annotation was computed. [2023-02-18 15:27:17,443 INFO L899 garLoopResultBuilder]: For program point L6(lines 6 8) no Hoare annotation was computed. [2023-02-18 15:27:17,443 INFO L902 garLoopResultBuilder]: At program point L6-2(lines 5 10) the Hoare annotation is: true [2023-02-18 15:27:17,445 INFO L445 BasicCegarLoop]: Path program histogram: [4, 1] [2023-02-18 15:27:17,446 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-02-18 15:27:17,467 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.02 03:27:17 BoogieIcfgContainer [2023-02-18 15:27:17,467 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-02-18 15:27:17,468 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-02-18 15:27:17,468 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-02-18 15:27:17,468 INFO L275 PluginConnector]: Witness Printer initialized [2023-02-18 15:27:17,468 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.02 03:27:12" (3/4) ... [2023-02-18 15:27:17,486 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-02-18 15:27:17,492 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2023-02-18 15:27:17,495 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2023-02-18 15:27:17,495 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-02-18 15:27:17,495 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-02-18 15:27:17,522 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-02-18 15:27:17,522 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-02-18 15:27:17,523 INFO L158 Benchmark]: Toolchain (without parser) took 5607.16ms. Allocated memory was 123.7MB in the beginning and 148.9MB in the end (delta: 25.2MB). Free memory was 51.4MB in the beginning and 71.0MB in the end (delta: -19.7MB). Peak memory consumption was 7.0MB. Max. memory is 16.1GB. [2023-02-18 15:27:17,523 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 123.7MB. Free memory is still 95.9MB. There was no memory consumed. Max. memory is 16.1GB. [2023-02-18 15:27:17,523 INFO L158 Benchmark]: CACSL2BoogieTranslator took 213.18ms. Allocated memory is still 123.7MB. Free memory was 51.2MB in the beginning and 96.1MB in the end (delta: -44.8MB). Peak memory consumption was 10.3MB. Max. memory is 16.1GB. [2023-02-18 15:27:17,524 INFO L158 Benchmark]: Boogie Procedure Inliner took 22.32ms. Allocated memory is still 123.7MB. Free memory was 96.1MB in the beginning and 94.7MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-18 15:27:17,524 INFO L158 Benchmark]: Boogie Preprocessor took 17.09ms. Allocated memory is still 123.7MB. Free memory was 94.7MB in the beginning and 93.9MB in the end (delta: 737.6kB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-18 15:27:17,524 INFO L158 Benchmark]: RCFGBuilder took 159.53ms. Allocated memory is still 123.7MB. Free memory was 93.3MB in the beginning and 84.8MB in the end (delta: 8.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-02-18 15:27:17,524 INFO L158 Benchmark]: TraceAbstraction took 5133.94ms. Allocated memory was 123.7MB in the beginning and 148.9MB in the end (delta: 25.2MB). Free memory was 84.2MB in the beginning and 74.1MB in the end (delta: 10.1MB). Peak memory consumption was 36.9MB. Max. memory is 16.1GB. [2023-02-18 15:27:17,525 INFO L158 Benchmark]: Witness Printer took 54.88ms. Allocated memory is still 148.9MB. Free memory was 74.1MB in the beginning and 71.0MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-18 15:27:17,526 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 123.7MB. Free memory is still 95.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 213.18ms. Allocated memory is still 123.7MB. Free memory was 51.2MB in the beginning and 96.1MB in the end (delta: -44.8MB). Peak memory consumption was 10.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 22.32ms. Allocated memory is still 123.7MB. Free memory was 96.1MB in the beginning and 94.7MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 17.09ms. Allocated memory is still 123.7MB. Free memory was 94.7MB in the beginning and 93.9MB in the end (delta: 737.6kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 159.53ms. Allocated memory is still 123.7MB. Free memory was 93.3MB in the beginning and 84.8MB in the end (delta: 8.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 5133.94ms. Allocated memory was 123.7MB in the beginning and 148.9MB in the end (delta: 25.2MB). Free memory was 84.2MB in the beginning and 74.1MB in the end (delta: 10.1MB). Peak memory consumption was 36.9MB. Max. memory is 16.1GB. * Witness Printer took 54.88ms. Allocated memory is still 148.9MB. Free memory was 74.1MB in the beginning and 71.0MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 7]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 11 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 5.1s, OverallIterations: 5, TraceHistogramMax: 22, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 1.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2 mSDsluCounter, 100 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 70 mSDsCounter, 4 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 235 IncrementalHoareTripleChecker+Invalid, 239 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4 mSolverCounterUnsat, 30 mSDtfsCounter, 235 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 187 GetRequests, 40 SyntacticMatches, 63 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 238 ImplicationChecksByTransitivity, 2.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=29occurred in iteration=4, InterpolantAutomatonStates: 49, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 25 NumberOfFragments, 1624 HoareAnnotationTreeSize, 2 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 2.2s InterpolantComputationTime, 128 NumberOfCodeBlocks, 128 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 176 ConstructedInterpolants, 0 QuantifiedInterpolants, 1976 SizeOfPredicates, 6 NumberOfNonLiveVariables, 251 ConjunctsInSsa, 92 ConjunctsInUnsatCore, 13 InterpolantComputations, 2 PerfectInterpolantSequences, 253/957 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 5]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 15]: Loop Invariant Derived loop invariant: (((((((((((((((((((((((((0 <= x + -2 && (0 == x % 2 % 4294967296 || (x % 4294967296 < 0 && !(0 == x % 2)))) && x == 2 + 0) && x <= 2) && ((0 == (x % 2 + 4294967294) % 4294967296 || !(x % 4294967296 < 0)) || 0 == x % 2)) || (((((x + 2) % 4294967296 < 268435455 && (x + 4) % 4294967296 < 268435455) && (0 == x % 2 % 4294967296 || (x % 4294967296 < 0 && !(0 == x % 2)))) && x % 4294967296 < 268435455) && ((0 == (x % 2 + 4294967294) % 4294967296 || !(x % 4294967296 < 0)) || 0 == x % 2))) || ((((((x + 2) % 4294967296 < 268435455 && (0 == x % 2 % 4294967296 || (x % 4294967296 < 0 && !(0 == x % 2)))) && 0 <= x + -4) && x <= 4) && x % 4294967296 < 268435455) && ((0 == (x % 2 + 4294967294) % 4294967296 || !(x % 4294967296 < 0)) || 0 == x % 2))) || (((((((x + 8) % 4294967296 < 268435455 && (x + 2) % 4294967296 < 268435455) && (x + 4) % 4294967296 < 268435455) && (x + 6) % 4294967296 < 268435455) && (0 == x % 2 % 4294967296 || (x % 4294967296 < 0 && !(0 == x % 2)))) && x % 4294967296 < 268435455) && ((0 == (x % 2 + 4294967294) % 4294967296 || !(x % 4294967296 < 0)) || 0 == x % 2))) || (((x + -2 <= 18 && 0 <= x + -2 + -18) && (0 == x % 2 % 4294967296 || (x % 4294967296 < 0 && !(0 == x % 2)))) && ((0 == (x % 2 + 4294967294) % 4294967296 || !(x % 4294967296 < 0)) || 0 == x % 2))) || ((((((x + 2) % 4294967296 < 268435455 && 0 <= x + -16) && x <= 16) && (0 == x % 2 % 4294967296 || (x % 4294967296 < 0 && !(0 == x % 2)))) && x % 4294967296 < 268435455) && ((0 == (x % 2 + 4294967294) % 4294967296 || !(x % 4294967296 < 0)) || 0 == x % 2))) || ((((((((x + 2) % 4294967296 < 268435455 && (x + 4) % 4294967296 < 268435455) && (x + 6) % 4294967296 < 268435455) && x <= 12) && (0 == x % 2 % 4294967296 || (x % 4294967296 < 0 && !(0 == x % 2)))) && 0 <= x + -12) && x % 4294967296 < 268435455) && ((0 == (x % 2 + 4294967294) % 4294967296 || !(x % 4294967296 < 0)) || 0 == x % 2))) || (((((((((((x + 8) % 4294967296 < 268435455 && (x + 2) % 4294967296 < 268435455) && (x + 4) % 4294967296 < 268435455) && (x + 14) % 4294967296 < 268435455) && (x + 6) % 4294967296 < 268435455) && (x + 16) % 4294967296 < 268435455) && (x + 12) % 4294967296 < 268435455) && (0 == x % 2 % 4294967296 || (x % 4294967296 < 0 && !(0 == x % 2)))) && (x + 10) % 4294967296 < 268435455) && x % 4294967296 < 268435455) && ((0 == (x % 2 + 4294967294) % 4294967296 || !(x % 4294967296 < 0)) || 0 == x % 2))) || (((((((((x + 8) % 4294967296 < 268435455 && (x + 2) % 4294967296 < 268435455) && (x + 4) % 4294967296 < 268435455) && (x + 6) % 4294967296 < 268435455) && (x + 12) % 4294967296 < 268435455) && (0 == x % 2 % 4294967296 || (x % 4294967296 < 0 && !(0 == x % 2)))) && (x + 10) % 4294967296 < 268435455) && x % 4294967296 < 268435455) && ((0 == (x % 2 + 4294967294) % 4294967296 || !(x % 4294967296 < 0)) || 0 == x % 2))) || ((((((x + 2) % 4294967296 < 268435455 && (x + 4) % 4294967296 < 268435455) && (x + 6) % 4294967296 < 268435455) && (0 == x % 2 % 4294967296 || (x % 4294967296 < 0 && !(0 == x % 2)))) && x % 4294967296 < 268435455) && ((0 == (x % 2 + 4294967294) % 4294967296 || !(x % 4294967296 < 0)) || 0 == x % 2))) || (((((0 <= x + -2 + -6 && x <= 8) && x + -2 <= 6) && 0 <= x + -8) && (0 == x % 2 % 4294967296 || (x % 4294967296 < 0 && !(0 == x % 2)))) && ((0 == (x % 2 + 4294967294) % 4294967296 || !(x % 4294967296 < 0)) || 0 == x % 2))) || ((0 == x % 2 % 4294967296 || (x % 4294967296 < 0 && !(0 == x % 2))) && ((0 == (x % 2 + 4294967294) % 4294967296 || !(x % 4294967296 < 0)) || 0 == x % 2))) || ((((((((((((x + 8) % 4294967296 < 268435455 && (x + 2) % 4294967296 < 268435455) && (x + 4) % 4294967296 < 268435455) && (x + 14) % 4294967296 < 268435455) && (x + 6) % 4294967296 < 268435455) && (x + 16) % 4294967296 < 268435455) && (x + 12) % 4294967296 < 268435455) && (x + 18) % 4294967296 < 268435455) && (0 == x % 2 % 4294967296 || (x % 4294967296 < 0 && !(0 == x % 2)))) && (x + 10) % 4294967296 < 268435455) && x % 4294967296 < 268435455) && ((0 == (x % 2 + 4294967294) % 4294967296 || !(x % 4294967296 < 0)) || 0 == x % 2))) || (((((((x + 2) % 4294967296 < 268435455 && (x + 4) % 4294967296 < 268435455) && 0 <= x + -14) && (0 == x % 2 % 4294967296 || (x % 4294967296 < 0 && !(0 == x % 2)))) && x % 4294967296 < 268435455) && x <= 14) && ((0 == (x % 2 + 4294967294) % 4294967296 || !(x % 4294967296 < 0)) || 0 == x % 2))) || ((((x + 2) % 4294967296 < 268435455 && (0 == x % 2 % 4294967296 || (x % 4294967296 < 0 && !(0 == x % 2)))) && x % 4294967296 < 268435455) && ((0 == (x % 2 + 4294967294) % 4294967296 || !(x % 4294967296 < 0)) || 0 == x % 2))) || ((((0 <= x + -6 && (0 == x % 2 % 4294967296 || (x % 4294967296 < 0 && !(0 == x % 2)))) && x <= 6) && x % 4294967296 < 268435455) && ((0 == (x % 2 + 4294967294) % 4294967296 || !(x % 4294967296 < 0)) || 0 == x % 2))) || ((((((((((x + 8) % 4294967296 < 268435455 && (x + 2) % 4294967296 < 268435455) && (x + 4) % 4294967296 < 268435455) && (x + 14) % 4294967296 < 268435455) && (x + 6) % 4294967296 < 268435455) && (x + 12) % 4294967296 < 268435455) && (0 == x % 2 % 4294967296 || (x % 4294967296 < 0 && !(0 == x % 2)))) && (x + 10) % 4294967296 < 268435455) && x % 4294967296 < 268435455) && ((0 == (x % 2 + 4294967294) % 4294967296 || !(x % 4294967296 < 0)) || 0 == x % 2))) || ((((x <= 18 && 0 <= x + -18) && (0 == x % 2 % 4294967296 || (x % 4294967296 < 0 && !(0 == x % 2)))) && x % 4294967296 < 268435455) && ((0 == (x % 2 + 4294967294) % 4294967296 || !(x % 4294967296 < 0)) || 0 == x % 2))) || ((x == 0 && (0 == x % 2 % 4294967296 || (x % 4294967296 < 0 && !(0 == x % 2)))) && ((0 == (x % 2 + 4294967294) % 4294967296 || !(x % 4294967296 < 0)) || 0 == x % 2))) || (((((((((x + 8) % 4294967296 < 268435455 && x <= 10) && (x + 2) % 4294967296 < 268435455) && (x + 4) % 4294967296 < 268435455) && (x + 6) % 4294967296 < 268435455) && (0 == x % 2 % 4294967296 || (x % 4294967296 < 0 && !(0 == x % 2)))) && x % 4294967296 < 268435455) && 0 <= x + -10) && ((0 == (x % 2 + 4294967294) % 4294967296 || !(x % 4294967296 < 0)) || 0 == x % 2))) || (((((((((((((x + 2) % 4294967296 < 268435455 && (x + 14) % 4294967296 < 268435455) && (x + 6) % 4294967296 < 268435455) && (x + 18) % 4294967296 < 268435455) && ((0 == (x % 2 + 4294967294) % 4294967296 || !(x % 4294967296 < 0)) || 0 == x % 2)) && (x + 8) % 4294967296 < 268435455) && (x + 4) % 4294967296 < 268435455) && (x + 16) % 4294967296 < 268435455) && (x + 12) % 4294967296 < 268435455) && (x + 20) % 4294967296 < 268435455) && (0 == x % 2 % 4294967296 || (x % 4294967296 < 0 && !(0 == x % 2)))) && (x + 10) % 4294967296 < 268435455) && x % 4294967296 < 268435455)) || ((((((((x + 8) % 4294967296 < 268435455 && (x + 2) % 4294967296 < 268435455) && (x + 4) % 4294967296 < 268435455) && (x + 6) % 4294967296 < 268435455) && (0 == x % 2 % 4294967296 || (x % 4294967296 < 0 && !(0 == x % 2)))) && (x + 10) % 4294967296 < 268435455) && x % 4294967296 < 268435455) && ((0 == (x % 2 + 4294967294) % 4294967296 || !(x % 4294967296 < 0)) || 0 == x % 2))) || (((0 == x % 2 % 4294967296 || (x % 4294967296 < 0 && !(0 == x % 2))) && x % 4294967296 < 268435455) && ((0 == (x % 2 + 4294967294) % 4294967296 || !(x % 4294967296 < 0)) || 0 == x % 2)) RESULT: Ultimate proved your program to be correct! [2023-02-18 15:27:17,555 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE