./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 [2023-02-17 06:28:12,368 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-17 06:28:12,369 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-17 06:28:12,402 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-17 06:28:12,402 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-17 06:28:12,405 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-17 06:28:12,407 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-17 06:28:12,409 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-17 06:28:12,410 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-17 06:28:12,415 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-17 06:28:12,416 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-17 06:28:12,417 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-17 06:28:12,418 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-17 06:28:12,420 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-17 06:28:12,421 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-17 06:28:12,422 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-17 06:28:12,422 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-17 06:28:12,423 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-17 06:28:12,424 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-17 06:28:12,428 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-17 06:28:12,429 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-17 06:28:12,429 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-17 06:28:12,430 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-17 06:28:12,431 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-17 06:28:12,434 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-17 06:28:12,434 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-17 06:28:12,434 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-17 06:28:12,435 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-17 06:28:12,435 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-17 06:28:12,437 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-17 06:28:12,437 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-17 06:28:12,437 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-17 06:28:12,438 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-17 06:28:12,439 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-17 06:28:12,440 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-17 06:28:12,440 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-17 06:28:12,440 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-17 06:28:12,440 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-17 06:28:12,441 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-17 06:28:12,441 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-17 06:28:12,442 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-17 06:28:12,443 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-02-17 06:28:12,466 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-17 06:28:12,467 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-17 06:28:12,467 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-17 06:28:12,467 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-17 06:28:12,468 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-17 06:28:12,468 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-17 06:28:12,468 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-17 06:28:12,468 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-17 06:28:12,469 INFO L138 SettingsManager]: * Use SBE=true [2023-02-17 06:28:12,469 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-17 06:28:12,469 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-17 06:28:12,470 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-17 06:28:12,470 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-17 06:28:12,470 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-17 06:28:12,470 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-17 06:28:12,470 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-17 06:28:12,470 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-17 06:28:12,470 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-17 06:28:12,470 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-17 06:28:12,471 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-17 06:28:12,471 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-17 06:28:12,471 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-17 06:28:12,471 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-17 06:28:12,471 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-17 06:28:12,471 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-17 06:28:12,471 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-17 06:28:12,472 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-17 06:28:12,472 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-17 06:28:12,472 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-17 06:28:12,472 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-17 06:28:12,472 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-17 06:28:12,472 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-17 06:28:12,472 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-17 06:28:12,473 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-17 06:28:12,473 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-17 06:28:12,473 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7922cbf7e8f9780d3e8e620cf25362ae75252990a9db15252dbdfd9dda70dad0 [2023-02-17 06:28:12,665 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-17 06:28:12,689 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-17 06:28:12,691 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-17 06:28:12,692 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-17 06:28:12,692 INFO L275 PluginConnector]: CDTParser initialized [2023-02-17 06:28:12,693 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-acceleration/simple_1-2.c [2023-02-17 06:28:13,736 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-17 06:28:13,877 INFO L351 CDTParser]: Found 1 translation units. [2023-02-17 06:28:13,878 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-acceleration/simple_1-2.c [2023-02-17 06:28:13,883 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5bb590e40/9d152520428e46559904f677a2fe3681/FLAGe2da37995 [2023-02-17 06:28:13,895 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5bb590e40/9d152520428e46559904f677a2fe3681 [2023-02-17 06:28:13,897 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-17 06:28:13,898 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-17 06:28:13,899 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-17 06:28:13,899 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-17 06:28:13,901 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-17 06:28:13,902 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.02 06:28:13" (1/1) ... [2023-02-17 06:28:13,902 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f5df8ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 06:28:13, skipping insertion in model container [2023-02-17 06:28:13,903 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.02 06:28:13" (1/1) ... [2023-02-17 06:28:13,908 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-17 06:28:13,917 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-17 06:28:14,003 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] [2023-02-17 06:28:14,013 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-17 06:28:14,022 INFO L203 MainTranslator]: Completed pre-run [2023-02-17 06:28:14,032 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] [2023-02-17 06:28:14,034 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-17 06:28:14,044 INFO L208 MainTranslator]: Completed translation [2023-02-17 06:28:14,045 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 06:28:14 WrapperNode [2023-02-17 06:28:14,045 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-17 06:28:14,046 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-17 06:28:14,046 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-17 06:28:14,046 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-17 06:28:14,054 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 06:28:14" (1/1) ... [2023-02-17 06:28:14,058 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 06:28:14" (1/1) ... [2023-02-17 06:28:14,069 INFO L138 Inliner]: procedures = 12, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 23 [2023-02-17 06:28:14,069 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-17 06:28:14,070 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-17 06:28:14,070 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-17 06:28:14,070 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-17 06:28:14,076 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 06:28:14" (1/1) ... [2023-02-17 06:28:14,076 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 06:28:14" (1/1) ... [2023-02-17 06:28:14,078 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 06:28:14" (1/1) ... [2023-02-17 06:28:14,078 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 06:28:14" (1/1) ... [2023-02-17 06:28:14,080 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 06:28:14" (1/1) ... [2023-02-17 06:28:14,082 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 06:28:14" (1/1) ... [2023-02-17 06:28:14,082 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 06:28:14" (1/1) ... [2023-02-17 06:28:14,083 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 06:28:14" (1/1) ... [2023-02-17 06:28:14,083 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-17 06:28:14,084 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-17 06:28:14,084 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-17 06:28:14,084 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-17 06:28:14,085 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 06:28:14" (1/1) ... [2023-02-17 06:28:14,089 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-17 06:28:14,096 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 06:28:14,106 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) [2023-02-17 06:28:14,110 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 [2023-02-17 06:28:14,132 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-17 06:28:14,133 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-17 06:28:14,133 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-17 06:28:14,133 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-17 06:28:14,170 INFO L235 CfgBuilder]: Building ICFG [2023-02-17 06:28:14,171 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-17 06:28:14,256 INFO L276 CfgBuilder]: Performing block encoding [2023-02-17 06:28:14,268 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-17 06:28:14,270 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2023-02-17 06:28:14,271 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 06:28:14 BoogieIcfgContainer [2023-02-17 06:28:14,272 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-17 06:28:14,273 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-17 06:28:14,273 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-17 06:28:14,275 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-17 06:28:14,276 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.02 06:28:13" (1/3) ... [2023-02-17 06:28:14,276 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@647aa14a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.02 06:28:14, skipping insertion in model container [2023-02-17 06:28:14,276 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 06:28:14" (2/3) ... [2023-02-17 06:28:14,277 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@647aa14a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.02 06:28:14, skipping insertion in model container [2023-02-17 06:28:14,277 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 06:28:14" (3/3) ... [2023-02-17 06:28:14,278 INFO L112 eAbstractionObserver]: Analyzing ICFG simple_1-2.c [2023-02-17 06:28:14,289 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-17 06:28:14,290 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-02-17 06:28:14,334 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-17 06:28:14,340 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;@3b0bff10, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-17 06:28:14,341 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-02-17 06:28:14,344 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) [2023-02-17 06:28:14,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-02-17 06:28:14,349 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 06:28:14,350 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-02-17 06:28:14,350 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 06:28:14,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 06:28:14,354 INFO L85 PathProgramCache]: Analyzing trace with hash 889633835, now seen corresponding path program 1 times [2023-02-17 06:28:14,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 06:28:14,361 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402839286] [2023-02-17 06:28:14,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 06:28:14,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 06:28:14,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 06:28:14,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 06:28:14,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 06:28:14,607 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402839286] [2023-02-17 06:28:14,608 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [402839286] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 06:28:14,608 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 06:28:14,608 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-17 06:28:14,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374410981] [2023-02-17 06:28:14,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 06:28:14,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-17 06:28:14,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 06:28:14,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-17 06:28:14,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-17 06:28:14,635 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) [2023-02-17 06:28:14,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 06:28:14,653 INFO L93 Difference]: Finished difference Result 20 states and 24 transitions. [2023-02-17 06:28:14,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-17 06:28:14,655 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 [2023-02-17 06:28:14,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 06:28:14,660 INFO L225 Difference]: With dead ends: 20 [2023-02-17 06:28:14,660 INFO L226 Difference]: Without dead ends: 8 [2023-02-17 06:28:14,662 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 [2023-02-17 06:28:14,666 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 [2023-02-17 06:28:14,667 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] [2023-02-17 06:28:14,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2023-02-17 06:28:14,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2023-02-17 06:28:14,686 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) [2023-02-17 06:28:14,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2023-02-17 06:28:14,687 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 6 [2023-02-17 06:28:14,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 06:28:14,688 INFO L495 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2023-02-17 06:28:14,688 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) [2023-02-17 06:28:14,689 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2023-02-17 06:28:14,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-02-17 06:28:14,689 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 06:28:14,689 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-02-17 06:28:14,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-02-17 06:28:14,690 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 06:28:14,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 06:28:14,691 INFO L85 PathProgramCache]: Analyzing trace with hash 1810510480, now seen corresponding path program 1 times [2023-02-17 06:28:14,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 06:28:14,691 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296512185] [2023-02-17 06:28:14,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 06:28:14,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 06:28:14,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 06:28:14,787 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 06:28:14,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 06:28:14,788 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296512185] [2023-02-17 06:28:14,788 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [296512185] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 06:28:14,788 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [531198774] [2023-02-17 06:28:14,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 06:28:14,788 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 06:28:14,789 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 06:28:14,791 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) [2023-02-17 06:28:14,817 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-17 06:28:14,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 06:28:14,844 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 5 conjunts are in the unsatisfiable core [2023-02-17 06:28:14,847 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 06:28:14,864 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 06:28:14,864 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 06:28:14,878 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 06:28:14,879 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [531198774] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 06:28:14,879 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-17 06:28:14,879 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2023-02-17 06:28:14,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483837723] [2023-02-17 06:28:14,880 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-17 06:28:14,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-02-17 06:28:14,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 06:28:14,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-02-17 06:28:14,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2023-02-17 06:28:14,897 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) [2023-02-17 06:28:14,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 06:28:14,919 INFO L93 Difference]: Finished difference Result 15 states and 17 transitions. [2023-02-17 06:28:14,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-17 06:28:14,919 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 [2023-02-17 06:28:14,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 06:28:14,920 INFO L225 Difference]: With dead ends: 15 [2023-02-17 06:28:14,920 INFO L226 Difference]: Without dead ends: 11 [2023-02-17 06:28:14,920 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 [2023-02-17 06:28:14,921 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 [2023-02-17 06:28:14,921 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] [2023-02-17 06:28:14,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2023-02-17 06:28:14,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2023-02-17 06:28:14,924 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) [2023-02-17 06:28:14,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2023-02-17 06:28:14,924 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 7 [2023-02-17 06:28:14,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 06:28:14,925 INFO L495 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2023-02-17 06:28:14,925 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) [2023-02-17 06:28:14,925 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2023-02-17 06:28:14,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-02-17 06:28:14,925 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 06:28:14,926 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1] [2023-02-17 06:28:14,933 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-02-17 06:28:15,131 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 [2023-02-17 06:28:15,131 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 06:28:15,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 06:28:15,132 INFO L85 PathProgramCache]: Analyzing trace with hash -1922847381, now seen corresponding path program 2 times [2023-02-17 06:28:15,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 06:28:15,132 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778649196] [2023-02-17 06:28:15,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 06:28:15,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 06:28:15,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 06:28:15,241 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 06:28:15,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 06:28:15,241 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778649196] [2023-02-17 06:28:15,241 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1778649196] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 06:28:15,241 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [513396828] [2023-02-17 06:28:15,241 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-17 06:28:15,241 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 06:28:15,242 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 06:28:15,244 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) [2023-02-17 06:28:15,259 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-02-17 06:28:15,292 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-17 06:28:15,292 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 06:28:15,293 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 11 conjunts are in the unsatisfiable core [2023-02-17 06:28:15,294 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 06:28:15,364 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 06:28:15,364 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 06:28:15,437 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 06:28:15,437 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [513396828] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 06:28:15,437 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-17 06:28:15,438 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2023-02-17 06:28:15,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694546647] [2023-02-17 06:28:15,438 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-17 06:28:15,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-02-17 06:28:15,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 06:28:15,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-02-17 06:28:15,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=98, Unknown=0, NotChecked=0, Total=156 [2023-02-17 06:28:15,442 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) [2023-02-17 06:28:15,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 06:28:15,605 INFO L93 Difference]: Finished difference Result 21 states and 26 transitions. [2023-02-17 06:28:15,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-02-17 06:28:15,607 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 [2023-02-17 06:28:15,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 06:28:15,607 INFO L225 Difference]: With dead ends: 21 [2023-02-17 06:28:15,607 INFO L226 Difference]: Without dead ends: 17 [2023-02-17 06:28:15,608 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 [2023-02-17 06:28:15,609 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, 0.1s IncrementalHoareTripleChecker+Time [2023-02-17 06:28:15,609 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 24 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-17 06:28:15,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2023-02-17 06:28:15,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2023-02-17 06:28:15,615 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) [2023-02-17 06:28:15,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2023-02-17 06:28:15,615 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 10 [2023-02-17 06:28:15,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 06:28:15,616 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2023-02-17 06:28:15,616 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) [2023-02-17 06:28:15,616 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2023-02-17 06:28:15,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-02-17 06:28:15,617 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 06:28:15,618 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1] [2023-02-17 06:28:15,626 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-02-17 06:28:15,824 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 [2023-02-17 06:28:15,824 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 06:28:15,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 06:28:15,825 INFO L85 PathProgramCache]: Analyzing trace with hash 1628318539, now seen corresponding path program 3 times [2023-02-17 06:28:15,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 06:28:15,825 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854463955] [2023-02-17 06:28:15,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 06:28:15,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 06:28:15,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 06:28:16,042 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 06:28:16,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 06:28:16,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854463955] [2023-02-17 06:28:16,043 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854463955] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 06:28:16,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1207728884] [2023-02-17 06:28:16,045 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-17 06:28:16,045 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 06:28:16,045 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 06:28:16,046 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) [2023-02-17 06:28:16,100 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-02-17 06:28:16,118 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2023-02-17 06:28:16,118 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 06:28:16,119 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 23 conjunts are in the unsatisfiable core [2023-02-17 06:28:16,120 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 06:28:16,205 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 06:28:16,210 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 06:28:16,416 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 06:28:16,416 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1207728884] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 06:28:16,416 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-17 06:28:16,416 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2023-02-17 06:28:16,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145330817] [2023-02-17 06:28:16,416 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-17 06:28:16,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-02-17 06:28:16,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 06:28:16,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-02-17 06:28:16,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=410, Unknown=0, NotChecked=0, Total=600 [2023-02-17 06:28:16,418 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) [2023-02-17 06:28:17,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 06:28:17,699 INFO L93 Difference]: Finished difference Result 33 states and 44 transitions. [2023-02-17 06:28:17,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-02-17 06:28:17,700 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 [2023-02-17 06:28:17,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 06:28:17,700 INFO L225 Difference]: With dead ends: 33 [2023-02-17 06:28:17,700 INFO L226 Difference]: Without dead ends: 29 [2023-02-17 06:28:17,701 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 10 SyntacticMatches, 11 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=440, Invalid=750, Unknown=0, NotChecked=0, Total=1190 [2023-02-17 06:28:17,702 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 [2023-02-17 06:28:17,702 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] [2023-02-17 06:28:17,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2023-02-17 06:28:17,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2023-02-17 06:28:17,706 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) [2023-02-17 06:28:17,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 29 transitions. [2023-02-17 06:28:17,707 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 29 transitions. Word has length 16 [2023-02-17 06:28:17,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 06:28:17,707 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 29 transitions. [2023-02-17 06:28:17,707 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) [2023-02-17 06:28:17,707 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 29 transitions. [2023-02-17 06:28:17,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-02-17 06:28:17,708 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 06:28:17,708 INFO L195 NwaCegarLoop]: trace histogram [22, 1, 1, 1, 1, 1, 1] [2023-02-17 06:28:17,719 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-02-17 06:28:17,917 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 [2023-02-17 06:28:17,918 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 06:28:17,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 06:28:17,919 INFO L85 PathProgramCache]: Analyzing trace with hash 1394044683, now seen corresponding path program 4 times [2023-02-17 06:28:17,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 06:28:17,919 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240354013] [2023-02-17 06:28:17,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 06:28:17,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 06:28:17,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 06:28:18,322 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 06:28:18,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 06:28:18,322 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240354013] [2023-02-17 06:28:18,322 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1240354013] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 06:28:18,322 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [485056069] [2023-02-17 06:28:18,322 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-02-17 06:28:18,322 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 06:28:18,322 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 06:28:18,323 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) [2023-02-17 06:28:18,325 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-02-17 06:28:18,360 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-02-17 06:28:18,360 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 06:28:18,361 WARN L261 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 53 conjunts are in the unsatisfiable core [2023-02-17 06:28:18,362 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 06:28:18,637 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 06:28:18,638 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 06:28:19,342 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2023-02-17 06:28:19,342 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [485056069] provided 1 perfect and 1 imperfect interpolant sequences [2023-02-17 06:28:19,342 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-02-17 06:28:19,342 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [25, 26] total 30 [2023-02-17 06:28:19,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527534993] [2023-02-17 06:28:19,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 06:28:19,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-17 06:28:19,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 06:28:19,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-17 06:28:19,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=742, Unknown=0, NotChecked=0, Total=870 [2023-02-17 06:28:19,344 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) [2023-02-17 06:28:19,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 06:28:19,371 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions. [2023-02-17 06:28:19,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-17 06:28:19,371 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 [2023-02-17 06:28:19,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 06:28:19,371 INFO L225 Difference]: With dead ends: 29 [2023-02-17 06:28:19,372 INFO L226 Difference]: Without dead ends: 0 [2023-02-17 06:28:19,372 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 [2023-02-17 06:28:19,373 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 [2023-02-17 06:28:19,373 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] [2023-02-17 06:28:19,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-02-17 06:28:19,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-02-17 06:28:19,376 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) [2023-02-17 06:28:19,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-02-17 06:28:19,377 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 28 [2023-02-17 06:28:19,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 06:28:19,377 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-02-17 06:28:19,377 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) [2023-02-17 06:28:19,377 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-02-17 06:28:19,377 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-02-17 06:28:19,379 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-02-17 06:28:19,387 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-02-17 06:28:19,584 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 [2023-02-17 06:28:19,587 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-02-17 06:28:19,591 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-02-17 06:28:19,592 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))))) [2023-02-17 06:28:19,592 INFO L899 garLoopResultBuilder]: For program point L15-3(lines 15 17) no Hoare annotation was computed. [2023-02-17 06:28:19,592 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-02-17 06:28:19,592 INFO L899 garLoopResultBuilder]: For program point L7(line 7) no Hoare annotation was computed. [2023-02-17 06:28:19,592 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2023-02-17 06:28:19,592 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2023-02-17 06:28:19,592 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 7) no Hoare annotation was computed. [2023-02-17 06:28:19,592 INFO L899 garLoopResultBuilder]: For program point L12(lines 12 20) no Hoare annotation was computed. [2023-02-17 06:28:19,593 INFO L899 garLoopResultBuilder]: For program point L6(lines 6 8) no Hoare annotation was computed. [2023-02-17 06:28:19,593 INFO L902 garLoopResultBuilder]: At program point L6-2(lines 5 10) the Hoare annotation is: true [2023-02-17 06:28:19,595 INFO L445 BasicCegarLoop]: Path program histogram: [4, 1] [2023-02-17 06:28:19,596 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-02-17 06:28:19,631 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.02 06:28:19 BoogieIcfgContainer [2023-02-17 06:28:19,631 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-02-17 06:28:19,631 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-02-17 06:28:19,631 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-02-17 06:28:19,631 INFO L275 PluginConnector]: Witness Printer initialized [2023-02-17 06:28:19,632 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 06:28:14" (3/4) ... [2023-02-17 06:28:19,634 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-02-17 06:28:19,639 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2023-02-17 06:28:19,639 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2023-02-17 06:28:19,640 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-02-17 06:28:19,640 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-02-17 06:28:19,662 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-02-17 06:28:19,663 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-02-17 06:28:19,663 INFO L158 Benchmark]: Toolchain (without parser) took 5764.98ms. Allocated memory was 123.7MB in the beginning and 182.5MB in the end (delta: 58.7MB). Free memory was 77.7MB in the beginning and 65.9MB in the end (delta: 11.8MB). Peak memory consumption was 72.1MB. Max. memory is 16.1GB. [2023-02-17 06:28:19,663 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 123.7MB. Free memory is still 95.2MB. There was no memory consumed. Max. memory is 16.1GB. [2023-02-17 06:28:19,664 INFO L158 Benchmark]: CACSL2BoogieTranslator took 146.24ms. Allocated memory is still 123.7MB. Free memory was 77.7MB in the beginning and 67.8MB in the end (delta: 9.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-02-17 06:28:19,664 INFO L158 Benchmark]: Boogie Procedure Inliner took 23.63ms. Allocated memory is still 123.7MB. Free memory was 67.8MB in the beginning and 66.4MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-17 06:28:19,664 INFO L158 Benchmark]: Boogie Preprocessor took 13.59ms. Allocated memory is still 123.7MB. Free memory was 66.4MB in the beginning and 65.2MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-17 06:28:19,665 INFO L158 Benchmark]: RCFGBuilder took 187.60ms. Allocated memory is still 123.7MB. Free memory was 65.2MB in the beginning and 56.9MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-02-17 06:28:19,665 INFO L158 Benchmark]: TraceAbstraction took 5357.65ms. Allocated memory was 123.7MB in the beginning and 182.5MB in the end (delta: 58.7MB). Free memory was 55.9MB in the beginning and 68.0MB in the end (delta: -12.1MB). Peak memory consumption was 49.1MB. Max. memory is 16.1GB. [2023-02-17 06:28:19,665 INFO L158 Benchmark]: Witness Printer took 31.38ms. Allocated memory is still 182.5MB. Free memory was 68.0MB in the beginning and 65.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-17 06:28:19,667 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 95.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 146.24ms. Allocated memory is still 123.7MB. Free memory was 77.7MB in the beginning and 67.8MB in the end (delta: 9.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 23.63ms. Allocated memory is still 123.7MB. Free memory was 67.8MB in the beginning and 66.4MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 13.59ms. Allocated memory is still 123.7MB. Free memory was 66.4MB in the beginning and 65.2MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 187.60ms. Allocated memory is still 123.7MB. Free memory was 65.2MB in the beginning and 56.9MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 5357.65ms. Allocated memory was 123.7MB in the beginning and 182.5MB in the end (delta: 58.7MB). Free memory was 55.9MB in the beginning and 68.0MB in the end (delta: -12.1MB). Peak memory consumption was 49.1MB. Max. memory is 16.1GB. * Witness Printer took 31.38ms. Allocated memory is still 182.5MB. Free memory was 68.0MB in the beginning and 65.9MB in the end (delta: 2.1MB). 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: 5.3s, 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, 0.2s SatisfiabilityAnalysisTime, 2.4s 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! [2023-02-17 06:28:19,693 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