./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loop-new/half.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 26d01a9c Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/loop-new/half.i -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 cd8ea842760c1d795b2a0ad721eea8bf94078967bffa91c75f5537bf4a53b968 --- Real Ultimate output --- This is Ultimate 0.2.2-?-26d01a9 [2023-02-17 01:08:47,947 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-17 01:08:47,949 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-17 01:08:47,973 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-17 01:08:47,975 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-17 01:08:47,977 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-17 01:08:47,979 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-17 01:08:47,981 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-17 01:08:47,982 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-17 01:08:47,986 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-17 01:08:47,987 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-17 01:08:47,988 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-17 01:08:47,988 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-17 01:08:47,991 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-17 01:08:47,993 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-17 01:08:47,994 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-17 01:08:47,994 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-17 01:08:47,996 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-17 01:08:47,997 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-17 01:08:48,000 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-17 01:08:48,001 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-17 01:08:48,002 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-17 01:08:48,003 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-17 01:08:48,003 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-17 01:08:48,009 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-17 01:08:48,011 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-17 01:08:48,011 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-17 01:08:48,011 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-17 01:08:48,012 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-17 01:08:48,013 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-17 01:08:48,013 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-17 01:08:48,013 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-17 01:08:48,014 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-17 01:08:48,015 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-17 01:08:48,016 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-17 01:08:48,016 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-17 01:08:48,017 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-17 01:08:48,017 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-17 01:08:48,017 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-17 01:08:48,018 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-17 01:08:48,019 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-17 01:08:48,019 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-02-17 01:08:48,041 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-17 01:08:48,042 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-17 01:08:48,042 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-17 01:08:48,042 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-17 01:08:48,043 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-17 01:08:48,043 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-17 01:08:48,043 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-17 01:08:48,044 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-17 01:08:48,044 INFO L138 SettingsManager]: * Use SBE=true [2023-02-17 01:08:48,044 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-17 01:08:48,044 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-17 01:08:48,045 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-17 01:08:48,045 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-17 01:08:48,045 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-17 01:08:48,045 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-17 01:08:48,045 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-17 01:08:48,045 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-17 01:08:48,045 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-17 01:08:48,046 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-17 01:08:48,046 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-17 01:08:48,046 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-17 01:08:48,046 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-17 01:08:48,046 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-17 01:08:48,046 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-17 01:08:48,047 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-17 01:08:48,047 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-17 01:08:48,047 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-17 01:08:48,047 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-17 01:08:48,047 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-17 01:08:48,047 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-17 01:08:48,047 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-17 01:08:48,048 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-17 01:08:48,048 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-17 01:08:48,048 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-17 01:08:48,048 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-17 01:08:48,048 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cd8ea842760c1d795b2a0ad721eea8bf94078967bffa91c75f5537bf4a53b968 [2023-02-17 01:08:48,231 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-17 01:08:48,252 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-17 01:08:48,254 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-17 01:08:48,255 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-17 01:08:48,255 INFO L275 PluginConnector]: CDTParser initialized [2023-02-17 01:08:48,256 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-new/half.i [2023-02-17 01:08:49,288 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-17 01:08:49,451 INFO L351 CDTParser]: Found 1 translation units. [2023-02-17 01:08:49,452 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-new/half.i [2023-02-17 01:08:49,457 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5cbd03e76/6e40701260ae4d62b95ab1794294cb17/FLAG563aea8ed [2023-02-17 01:08:49,470 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5cbd03e76/6e40701260ae4d62b95ab1794294cb17 [2023-02-17 01:08:49,472 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-17 01:08:49,473 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-17 01:08:49,476 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-17 01:08:49,476 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-17 01:08:49,478 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-17 01:08:49,479 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.02 01:08:49" (1/1) ... [2023-02-17 01:08:49,480 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@493dddb4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 01:08:49, skipping insertion in model container [2023-02-17 01:08:49,480 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.02 01:08:49" (1/1) ... [2023-02-17 01:08:49,485 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-17 01:08:49,498 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-17 01:08:49,606 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-new/half.i[891,904] [2023-02-17 01:08:49,614 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-17 01:08:49,621 INFO L203 MainTranslator]: Completed pre-run [2023-02-17 01:08:49,634 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-new/half.i[891,904] [2023-02-17 01:08:49,636 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-17 01:08:49,647 INFO L208 MainTranslator]: Completed translation [2023-02-17 01:08:49,648 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 01:08:49 WrapperNode [2023-02-17 01:08:49,648 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-17 01:08:49,649 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-17 01:08:49,649 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-17 01:08:49,649 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-17 01:08:49,653 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 01:08:49" (1/1) ... [2023-02-17 01:08:49,657 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 01:08:49" (1/1) ... [2023-02-17 01:08:49,668 INFO L138 Inliner]: procedures = 16, calls = 7, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 38 [2023-02-17 01:08:49,668 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-17 01:08:49,669 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-17 01:08:49,669 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-17 01:08:49,669 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-17 01:08:49,674 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 01:08:49" (1/1) ... [2023-02-17 01:08:49,675 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 01:08:49" (1/1) ... [2023-02-17 01:08:49,675 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 01:08:49" (1/1) ... [2023-02-17 01:08:49,676 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 01:08:49" (1/1) ... [2023-02-17 01:08:49,677 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 01:08:49" (1/1) ... [2023-02-17 01:08:49,679 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 01:08:49" (1/1) ... [2023-02-17 01:08:49,680 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 01:08:49" (1/1) ... [2023-02-17 01:08:49,680 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 01:08:49" (1/1) ... [2023-02-17 01:08:49,681 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-17 01:08:49,682 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-17 01:08:49,682 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-17 01:08:49,682 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-17 01:08:49,683 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 01:08:49" (1/1) ... [2023-02-17 01:08:49,691 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-17 01:08:49,702 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 01:08:49,720 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 01:08:49,723 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 01:08:49,748 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-17 01:08:49,749 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-17 01:08:49,749 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-17 01:08:49,749 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-17 01:08:49,788 INFO L235 CfgBuilder]: Building ICFG [2023-02-17 01:08:49,789 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-17 01:08:49,860 INFO L276 CfgBuilder]: Performing block encoding [2023-02-17 01:08:49,864 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-17 01:08:49,864 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2023-02-17 01:08:49,866 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 01:08:49 BoogieIcfgContainer [2023-02-17 01:08:49,866 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-17 01:08:49,867 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-17 01:08:49,867 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-17 01:08:49,869 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-17 01:08:49,869 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.02 01:08:49" (1/3) ... [2023-02-17 01:08:49,870 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26df100e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.02 01:08:49, skipping insertion in model container [2023-02-17 01:08:49,870 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 01:08:49" (2/3) ... [2023-02-17 01:08:49,870 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26df100e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.02 01:08:49, skipping insertion in model container [2023-02-17 01:08:49,870 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 01:08:49" (3/3) ... [2023-02-17 01:08:49,871 INFO L112 eAbstractionObserver]: Analyzing ICFG half.i [2023-02-17 01:08:49,882 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-17 01:08:49,883 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-02-17 01:08:49,924 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-17 01:08:49,931 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;@13b691a4, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-17 01:08:49,931 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-02-17 01:08:49,935 INFO L276 IsEmpty]: Start isEmpty. Operand has 14 states, 12 states have (on average 1.5) 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 01:08:49,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-02-17 01:08:49,939 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 01:08:49,939 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-02-17 01:08:49,940 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 01:08:49,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 01:08:49,946 INFO L85 PathProgramCache]: Analyzing trace with hash 1807274184, now seen corresponding path program 1 times [2023-02-17 01:08:49,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 01:08:49,952 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684457195] [2023-02-17 01:08:49,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 01:08:49,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 01:08:50,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 01:08:50,057 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 01:08:50,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 01:08:50,058 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684457195] [2023-02-17 01:08:50,059 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684457195] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 01:08:50,059 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 01:08:50,059 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-17 01:08:50,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037340863] [2023-02-17 01:08:50,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 01:08:50,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-02-17 01:08:50,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 01:08:50,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-02-17 01:08:50,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-17 01:08:50,110 INFO L87 Difference]: Start difference. First operand has 14 states, 12 states have (on average 1.5) 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) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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 01:08:50,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 01:08:50,121 INFO L93 Difference]: Finished difference Result 22 states and 26 transitions. [2023-02-17 01:08:50,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-02-17 01:08:50,123 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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 01:08:50,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 01:08:50,128 INFO L225 Difference]: With dead ends: 22 [2023-02-17 01:08:50,128 INFO L226 Difference]: Without dead ends: 10 [2023-02-17 01:08:50,130 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-17 01:08:50,134 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-17 01:08:50,135 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 01:08:50,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2023-02-17 01:08:50,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2023-02-17 01:08:50,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 9 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 01:08:50,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 11 transitions. [2023-02-17 01:08:50,171 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 11 transitions. Word has length 7 [2023-02-17 01:08:50,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 01:08:50,171 INFO L495 AbstractCegarLoop]: Abstraction has 10 states and 11 transitions. [2023-02-17 01:08:50,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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 01:08:50,171 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 11 transitions. [2023-02-17 01:08:50,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-02-17 01:08:50,172 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 01:08:50,172 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-02-17 01:08:50,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-02-17 01:08:50,172 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 01:08:50,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 01:08:50,181 INFO L85 PathProgramCache]: Analyzing trace with hash 1806946483, now seen corresponding path program 1 times [2023-02-17 01:08:50,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 01:08:50,181 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687993299] [2023-02-17 01:08:50,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 01:08:50,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 01:08:50,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 01:08:50,370 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 01:08:50,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 01:08:50,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687993299] [2023-02-17 01:08:50,371 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1687993299] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 01:08:50,371 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 01:08:50,372 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-02-17 01:08:50,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856314623] [2023-02-17 01:08:50,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 01:08:50,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-17 01:08:50,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 01:08:50,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-17 01:08:50,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-02-17 01:08:50,374 INFO L87 Difference]: Start difference. First operand 10 states and 11 transitions. Second operand has 6 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 states have internal predecessors, (7), 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 01:08:50,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 01:08:50,410 INFO L93 Difference]: Finished difference Result 21 states and 25 transitions. [2023-02-17 01:08:50,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-17 01:08:50,410 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 states have internal predecessors, (7), 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 01:08:50,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 01:08:50,411 INFO L225 Difference]: With dead ends: 21 [2023-02-17 01:08:50,411 INFO L226 Difference]: Without dead ends: 12 [2023-02-17 01:08:50,412 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-02-17 01:08:50,413 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 4 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-17 01:08:50,413 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 19 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 01:08:50,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2023-02-17 01:08:50,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2023-02-17 01:08:50,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 11 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 01:08:50,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 13 transitions. [2023-02-17 01:08:50,416 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 13 transitions. Word has length 7 [2023-02-17 01:08:50,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 01:08:50,416 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 13 transitions. [2023-02-17 01:08:50,417 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 states have internal predecessors, (7), 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 01:08:50,417 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 13 transitions. [2023-02-17 01:08:50,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-02-17 01:08:50,417 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 01:08:50,417 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 01:08:50,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-02-17 01:08:50,418 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 01:08:50,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 01:08:50,418 INFO L85 PathProgramCache]: Analyzing trace with hash -838413826, now seen corresponding path program 1 times [2023-02-17 01:08:50,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 01:08:50,419 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519667773] [2023-02-17 01:08:50,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 01:08:50,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 01:08:50,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 01:08:50,513 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 01:08:50,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 01:08:50,513 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519667773] [2023-02-17 01:08:50,514 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1519667773] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 01:08:50,514 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [69081806] [2023-02-17 01:08:50,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 01:08:50,514 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 01:08:50,515 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 01:08:50,517 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 01:08:50,518 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 01:08:50,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 01:08:50,563 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 9 conjunts are in the unsatisfiable core [2023-02-17 01:08:50,566 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 01:08:50,619 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 01:08:50,619 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 01:08:50,667 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 01:08:50,668 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [69081806] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 01:08:50,668 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-17 01:08:50,668 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 5] total 12 [2023-02-17 01:08:50,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033116244] [2023-02-17 01:08:50,669 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-17 01:08:50,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-02-17 01:08:50,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 01:08:50,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-02-17 01:08:50,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2023-02-17 01:08:50,670 INFO L87 Difference]: Start difference. First operand 12 states and 13 transitions. Second operand has 12 states, 12 states have (on average 1.5833333333333333) internal successors, (19), 12 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 01:08:50,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 01:08:50,759 INFO L93 Difference]: Finished difference Result 26 states and 31 transitions. [2023-02-17 01:08:50,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-02-17 01:08:50,759 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.5833333333333333) internal successors, (19), 12 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2023-02-17 01:08:50,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 01:08:50,760 INFO L225 Difference]: With dead ends: 26 [2023-02-17 01:08:50,760 INFO L226 Difference]: Without dead ends: 22 [2023-02-17 01:08:50,762 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 13 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2023-02-17 01:08:50,764 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 9 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-17 01:08:50,765 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 27 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-17 01:08:50,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2023-02-17 01:08:50,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 14. [2023-02-17 01:08:50,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 13 states have internal predecessors, (15), 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 01:08:50,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2023-02-17 01:08:50,768 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 10 [2023-02-17 01:08:50,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 01:08:50,769 INFO L495 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2023-02-17 01:08:50,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.5833333333333333) internal successors, (19), 12 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 01:08:50,769 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2023-02-17 01:08:50,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-02-17 01:08:50,770 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 01:08:50,770 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 01:08:50,783 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-02-17 01:08:50,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 01:08:50,974 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 01:08:50,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 01:08:50,976 INFO L85 PathProgramCache]: Analyzing trace with hash -355206639, now seen corresponding path program 1 times [2023-02-17 01:08:50,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 01:08:50,976 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517213846] [2023-02-17 01:08:50,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 01:08:50,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 01:08:50,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 01:08:51,115 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 01:08:51,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 01:08:51,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517213846] [2023-02-17 01:08:51,116 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [517213846] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 01:08:51,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1961159279] [2023-02-17 01:08:51,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 01:08:51,117 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 01:08:51,117 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 01:08:51,118 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 01:08:51,120 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 01:08:51,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 01:08:51,147 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 18 conjunts are in the unsatisfiable core [2023-02-17 01:08:51,148 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 01:08:51,235 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 01:08:51,236 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 01:08:51,358 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 01:08:51,359 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1961159279] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 01:08:51,359 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-17 01:08:51,359 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 11] total 23 [2023-02-17 01:08:51,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35998081] [2023-02-17 01:08:51,359 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-17 01:08:51,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-02-17 01:08:51,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 01:08:51,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-02-17 01:08:51,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=403, Unknown=0, NotChecked=0, Total=506 [2023-02-17 01:08:51,361 INFO L87 Difference]: Start difference. First operand 14 states and 15 transitions. Second operand has 23 states, 23 states have (on average 1.3043478260869565) internal successors, (30), 23 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 01:08:51,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 01:08:51,666 INFO L93 Difference]: Finished difference Result 41 states and 50 transitions. [2023-02-17 01:08:51,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-02-17 01:08:51,668 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 1.3043478260869565) internal successors, (30), 23 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 13 [2023-02-17 01:08:51,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 01:08:51,669 INFO L225 Difference]: With dead ends: 41 [2023-02-17 01:08:51,669 INFO L226 Difference]: Without dead ends: 28 [2023-02-17 01:08:51,669 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 11 SyntacticMatches, 2 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 337 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=266, Invalid=994, Unknown=0, NotChecked=0, Total=1260 [2023-02-17 01:08:51,670 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 34 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-17 01:08:51,670 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 34 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-17 01:08:51,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2023-02-17 01:08:51,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 23. [2023-02-17 01:08:51,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 22 states have internal predecessors, (26), 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 01:08:51,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2023-02-17 01:08:51,680 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 13 [2023-02-17 01:08:51,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 01:08:51,681 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2023-02-17 01:08:51,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 1.3043478260869565) internal successors, (30), 23 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 01:08:51,681 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2023-02-17 01:08:51,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-02-17 01:08:51,683 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 01:08:51,683 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 01:08:51,709 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-02-17 01:08:51,889 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,SelfDestructingSolverStorable3 [2023-02-17 01:08:51,890 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 01:08:51,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 01:08:51,896 INFO L85 PathProgramCache]: Analyzing trace with hash 1670059902, now seen corresponding path program 2 times [2023-02-17 01:08:51,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 01:08:51,896 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190586954] [2023-02-17 01:08:51,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 01:08:51,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 01:08:51,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 01:08:52,164 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-17 01:08:52,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 01:08:52,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190586954] [2023-02-17 01:08:52,169 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1190586954] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 01:08:52,169 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1809577186] [2023-02-17 01:08:52,169 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-17 01:08:52,169 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 01:08:52,169 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 01:08:52,187 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 01:08:52,231 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 01:08:52,259 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-17 01:08:52,259 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 01:08:52,260 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 28 conjunts are in the unsatisfiable core [2023-02-17 01:08:52,262 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 01:08:52,368 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 01:08:52,369 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 01:08:52,585 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 18 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-17 01:08:52,586 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1809577186] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 01:08:52,586 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-17 01:08:52,586 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 12] total 30 [2023-02-17 01:08:52,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32487291] [2023-02-17 01:08:52,586 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-17 01:08:52,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-02-17 01:08:52,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 01:08:52,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-02-17 01:08:52,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=723, Unknown=0, NotChecked=0, Total=870 [2023-02-17 01:08:52,589 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand has 30 states, 30 states have (on average 1.8) internal successors, (54), 30 states have internal predecessors, (54), 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 01:08:52,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 01:08:52,745 INFO L93 Difference]: Finished difference Result 36 states and 43 transitions. [2023-02-17 01:08:52,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-02-17 01:08:52,747 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 1.8) internal successors, (54), 30 states have internal predecessors, (54), 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 22 [2023-02-17 01:08:52,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 01:08:52,747 INFO L225 Difference]: With dead ends: 36 [2023-02-17 01:08:52,747 INFO L226 Difference]: Without dead ends: 0 [2023-02-17 01:08:52,748 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 26 SyntacticMatches, 5 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 368 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=233, Invalid=1099, Unknown=0, NotChecked=0, Total=1332 [2023-02-17 01:08:52,749 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 14 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-17 01:08:52,749 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 15 Invalid, 224 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 209 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-17 01:08:52,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-02-17 01:08:52,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-02-17 01:08:52,751 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 01:08:52,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-02-17 01:08:52,751 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 22 [2023-02-17 01:08:52,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 01:08:52,751 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-02-17 01:08:52,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 1.8) internal successors, (54), 30 states have internal predecessors, (54), 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 01:08:52,752 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-02-17 01:08:52,752 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-02-17 01:08:52,754 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-02-17 01:08:52,771 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-02-17 01:08:52,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 01:08:52,962 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-02-17 01:08:52,968 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-02-17 01:08:52,968 INFO L899 garLoopResultBuilder]: For program point L29-2(lines 29 33) no Hoare annotation was computed. [2023-02-17 01:08:52,971 INFO L895 garLoopResultBuilder]: At program point L29-3(lines 29 33) the Hoare annotation is: (let ((.cse11 (+ |ULTIMATE.start_main_~i~0#1| 1))) (let ((.cse33 (* 2 |ULTIMATE.start_main_~k~0#1|)) (.cse22 (* 2 |ULTIMATE.start_main_~n~0#1|)) (.cse29 (div .cse11 2))) (let ((.cse9 (div |ULTIMATE.start_main_~i~0#1| 2)) (.cse13 (< .cse11 0)) (.cse10 (* .cse29 2)) (.cse25 (let ((.cse34 (= (mod |ULTIMATE.start_main_~i~0#1| 2) 0))) (and (or (not (< |ULTIMATE.start_main_~i~0#1| 0)) .cse34) .cse34))) (.cse21 (<= |ULTIMATE.start_main_~i~0#1| (+ (- 1) .cse22))) (.cse4 (+ 0 1)) (.cse28 (+ (- 1) |ULTIMATE.start_main_~n~0#1|)) (.cse26 (< |ULTIMATE.start_main_~k~0#1| 0)) (.cse24 (= |ULTIMATE.start_main_~k~0#1| |ULTIMATE.start_main_~n~0#1|)) (.cse27 (< .cse11 .cse33))) (let ((.cse16 (or .cse26 .cse24 .cse27)) (.cse0 (= .cse28 0)) (.cse14 (<= |ULTIMATE.start_main_~i~0#1| (+ .cse4 1))) (.cse15 (< .cse4 .cse33)) (.cse1 (let ((.cse31 (<= |ULTIMATE.start_main_~i~0#1| .cse4)) (.cse32 (<= 0 (+ (- 1) .cse33)))) (or (let ((.cse30 (<= (+ |ULTIMATE.start_main_~k~0#1| (* (- 1) |ULTIMATE.start_main_~n~0#1|) 1) 0))) (and (or (not .cse30) (<= |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~k~0#1|)) .cse31 (or .cse21 .cse30) .cse32)) (< |ULTIMATE.start_main_~i~0#1| .cse33) (and .cse31 .cse32)))) (.cse17 (or (and (or (< .cse11 (+ 2 .cse22)) (< .cse11 (+ 2 (* .cse9 2))) .cse13) (or (< .cse28 0) (< (+ (- 2) .cse22) .cse11) (< .cse10 .cse11) (< .cse29 0))) .cse25))) (let ((.cse2 (<= 0 .cse28)) (.cse3 (<= |ULTIMATE.start_main_~n~0#1| 1)) (.cse18 (<= |ULTIMATE.start_main_~i~0#1| .cse22)) (.cse20 (<= .cse22 |ULTIMATE.start_main_~i~0#1|)) (.cse19 (or (and .cse16 .cse17) (and .cse0 .cse14 .cse15 .cse17) (and .cse1 .cse17)))) (or (and .cse0 .cse1 .cse2 .cse3 (= |ULTIMATE.start_main_~i~0#1| .cse4)) (and (or (let ((.cse7 (+ |ULTIMATE.start_main_~n~0#1| 1))) (let ((.cse6 (+ .cse11 1)) (.cse8 (* .cse7 2))) (and (let ((.cse5 (+ .cse9 1))) (or (< (* 2 .cse5) .cse6) (< (+ (- 1) .cse7) 0) (< .cse5 0) (< (+ (- 2) .cse8) .cse6))) (or (< .cse6 (+ 2 .cse10)) (< .cse6 0) (< .cse6 (+ 2 .cse8)))))) (let ((.cse12 (= (mod .cse11 2) 0))) (and .cse12 (or .cse12 (not .cse13))))) (= .cse4 (+ (- 1) |ULTIMATE.start_main_~i~0#1|)) .cse0 .cse14 .cse15 .cse16 .cse2 .cse3 .cse17) (and .cse18 .cse19 .cse16 .cse20) (and .cse21 (<= .cse22 .cse11) .cse1) (and (= |ULTIMATE.start_main_~i~0#1| 0) (let ((.cse23 (= |ULTIMATE.start_main_~k~0#1| 0))) (or (and .cse23 .cse24) (not .cse23))) (= |ULTIMATE.start_main_~n~0#1| 0)) (and (or .cse25 .cse26 .cse24 .cse27) .cse18 .cse16 .cse20 .cse17) (and (= (+ 2 1) |ULTIMATE.start_main_~i~0#1|) .cse19 (<= .cse28 1) (<= 0 (+ (- 1) .cse28))))))))) [2023-02-17 01:08:52,971 INFO L899 garLoopResultBuilder]: For program point L29-4(lines 29 33) no Hoare annotation was computed. [2023-02-17 01:08:52,971 INFO L899 garLoopResultBuilder]: For program point L19(line 19) no Hoare annotation was computed. [2023-02-17 01:08:52,971 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-02-17 01:08:52,971 INFO L902 garLoopResultBuilder]: At program point main_returnLabel#1(lines 24 36) the Hoare annotation is: true [2023-02-17 01:08:52,971 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2023-02-17 01:08:52,972 INFO L899 garLoopResultBuilder]: For program point L30(lines 30 32) no Hoare annotation was computed. [2023-02-17 01:08:52,972 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2023-02-17 01:08:52,972 INFO L899 garLoopResultBuilder]: For program point L28(line 28) no Hoare annotation was computed. [2023-02-17 01:08:52,972 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2023-02-17 01:08:52,972 INFO L899 garLoopResultBuilder]: For program point L18(lines 18 20) no Hoare annotation was computed. [2023-02-17 01:08:52,972 INFO L902 garLoopResultBuilder]: At program point L18-2(lines 17 22) the Hoare annotation is: true [2023-02-17 01:08:52,977 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1] [2023-02-17 01:08:52,978 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-02-17 01:08:53,012 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.02 01:08:53 BoogieIcfgContainer [2023-02-17 01:08:53,014 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-02-17 01:08:53,015 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-02-17 01:08:53,020 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-02-17 01:08:53,021 INFO L275 PluginConnector]: Witness Printer initialized [2023-02-17 01:08:53,021 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 01:08:49" (3/4) ... [2023-02-17 01:08:53,023 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-02-17 01:08:53,035 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2023-02-17 01:08:53,037 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-02-17 01:08:53,037 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-02-17 01:08:53,038 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-02-17 01:08:53,058 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-02-17 01:08:53,059 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-02-17 01:08:53,059 INFO L158 Benchmark]: Toolchain (without parser) took 3585.75ms. Allocated memory was 121.6MB in the beginning and 165.7MB in the end (delta: 44.0MB). Free memory was 82.2MB in the beginning and 50.6MB in the end (delta: 31.5MB). Peak memory consumption was 77.5MB. Max. memory is 16.1GB. [2023-02-17 01:08:53,059 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 94.4MB. Free memory is still 44.9MB. There was no memory consumed. Max. memory is 16.1GB. [2023-02-17 01:08:53,060 INFO L158 Benchmark]: CACSL2BoogieTranslator took 172.30ms. Allocated memory is still 121.6MB. Free memory was 82.0MB in the beginning and 71.6MB in the end (delta: 10.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-02-17 01:08:53,060 INFO L158 Benchmark]: Boogie Procedure Inliner took 19.58ms. Allocated memory is still 121.6MB. Free memory was 71.6MB in the beginning and 70.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-17 01:08:53,060 INFO L158 Benchmark]: Boogie Preprocessor took 12.62ms. Allocated memory is still 121.6MB. Free memory was 70.1MB in the beginning and 68.9MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-17 01:08:53,060 INFO L158 Benchmark]: RCFGBuilder took 184.06ms. Allocated memory is still 121.6MB. Free memory was 68.9MB in the beginning and 60.1MB in the end (delta: 8.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-02-17 01:08:53,061 INFO L158 Benchmark]: TraceAbstraction took 3147.38ms. Allocated memory was 121.6MB in the beginning and 165.7MB in the end (delta: 44.0MB). Free memory was 59.1MB in the beginning and 52.7MB in the end (delta: 6.4MB). Peak memory consumption was 52.3MB. Max. memory is 16.1GB. [2023-02-17 01:08:53,061 INFO L158 Benchmark]: Witness Printer took 43.71ms. Allocated memory is still 165.7MB. Free memory was 52.7MB in the beginning and 50.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-17 01:08:53,062 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 94.4MB. Free memory is still 44.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 172.30ms. Allocated memory is still 121.6MB. Free memory was 82.0MB in the beginning and 71.6MB in the end (delta: 10.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 19.58ms. Allocated memory is still 121.6MB. Free memory was 71.6MB in the beginning and 70.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 12.62ms. Allocated memory is still 121.6MB. Free memory was 70.1MB in the beginning and 68.9MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 184.06ms. Allocated memory is still 121.6MB. Free memory was 68.9MB in the beginning and 60.1MB in the end (delta: 8.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 3147.38ms. Allocated memory was 121.6MB in the beginning and 165.7MB in the end (delta: 44.0MB). Free memory was 59.1MB in the beginning and 52.7MB in the end (delta: 6.4MB). Peak memory consumption was 52.3MB. Max. memory is 16.1GB. * Witness Printer took 43.71ms. Allocated memory is still 165.7MB. Free memory was 52.7MB in the beginning and 50.6MB 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: 19]: 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, 14 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 3.1s, OverallIterations: 5, TraceHistogramMax: 5, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 61 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 61 mSDsluCounter, 111 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 74 mSDsCounter, 58 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 419 IncrementalHoareTripleChecker+Invalid, 477 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 58 mSolverCounterUnsat, 37 mSDtfsCounter, 419 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 152 GetRequests, 54 SyntacticMatches, 10 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 734 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=23occurred in iteration=4, InterpolantAutomatonStates: 54, 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, 13 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 12 NumberOfFragments, 1238 HoareAnnotationTreeSize, 3 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 104 NumberOfCodeBlocks, 104 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 138 ConstructedInterpolants, 0 QuantifiedInterpolants, 2396 SizeOfPredicates, 12 NumberOfNonLiveVariables, 164 ConjunctsInSsa, 55 ConjunctsInUnsatCore, 11 InterpolantComputations, 2 PerfectInterpolantSequences, 22/123 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: 29]: Loop Invariant Derived loop invariant: (((((((((-1 + n == 0 && ((((((!(k + -1 * n + 1 <= 0) || n <= k) && i <= 0 + 1) && (i <= -1 + 2 * n || k + -1 * n + 1 <= 0)) && 0 <= -1 + 2 * k) || i < 2 * k) || (i <= 0 + 1 && 0 <= -1 + 2 * k))) && 0 <= -1 + n) && n <= 1) && i == 0 + 1) || (((((((((((((2 * (i / 2 + 1) < i + 1 + 1 || -1 + (n + 1) < 0) || i / 2 + 1 < 0) || -2 + (n + 1) * 2 < i + 1 + 1) && ((i + 1 + 1 < 2 + (i + 1) / 2 * 2 || i + 1 + 1 < 0) || i + 1 + 1 < 2 + (n + 1) * 2)) || ((i + 1) % 2 == 0 && ((i + 1) % 2 == 0 || !(i + 1 < 0)))) && 0 + 1 == -1 + i) && -1 + n == 0) && i <= 0 + 1 + 1) && 0 + 1 < 2 * k) && ((k < 0 || k == n) || i + 1 < 2 * k)) && 0 <= -1 + n) && n <= 1) && ((((i + 1 < 2 + 2 * n || i + 1 < 2 + i / 2 * 2) || i + 1 < 0) && (((-1 + n < 0 || -2 + 2 * n < i + 1) || (i + 1) / 2 * 2 < i + 1) || (i + 1) / 2 < 0)) || ((!(i < 0) || i % 2 == 0) && i % 2 == 0)))) || (((i <= 2 * n && (((((k < 0 || k == n) || i + 1 < 2 * k) && ((((i + 1 < 2 + 2 * n || i + 1 < 2 + i / 2 * 2) || i + 1 < 0) && (((-1 + n < 0 || -2 + 2 * n < i + 1) || (i + 1) / 2 * 2 < i + 1) || (i + 1) / 2 < 0)) || ((!(i < 0) || i % 2 == 0) && i % 2 == 0))) || (((-1 + n == 0 && i <= 0 + 1 + 1) && 0 + 1 < 2 * k) && ((((i + 1 < 2 + 2 * n || i + 1 < 2 + i / 2 * 2) || i + 1 < 0) && (((-1 + n < 0 || -2 + 2 * n < i + 1) || (i + 1) / 2 * 2 < i + 1) || (i + 1) / 2 < 0)) || ((!(i < 0) || i % 2 == 0) && i % 2 == 0)))) || (((((((!(k + -1 * n + 1 <= 0) || n <= k) && i <= 0 + 1) && (i <= -1 + 2 * n || k + -1 * n + 1 <= 0)) && 0 <= -1 + 2 * k) || i < 2 * k) || (i <= 0 + 1 && 0 <= -1 + 2 * k)) && ((((i + 1 < 2 + 2 * n || i + 1 < 2 + i / 2 * 2) || i + 1 < 0) && (((-1 + n < 0 || -2 + 2 * n < i + 1) || (i + 1) / 2 * 2 < i + 1) || (i + 1) / 2 < 0)) || ((!(i < 0) || i % 2 == 0) && i % 2 == 0))))) && ((k < 0 || k == n) || i + 1 < 2 * k)) && 2 * n <= i)) || ((i <= -1 + 2 * n && 2 * n <= i + 1) && ((((((!(k + -1 * n + 1 <= 0) || n <= k) && i <= 0 + 1) && (i <= -1 + 2 * n || k + -1 * n + 1 <= 0)) && 0 <= -1 + 2 * k) || i < 2 * k) || (i <= 0 + 1 && 0 <= -1 + 2 * k)))) || ((i == 0 && ((k == 0 && k == n) || !(k == 0))) && n == 0)) || (((((((((!(i < 0) || i % 2 == 0) && i % 2 == 0) || k < 0) || k == n) || i + 1 < 2 * k) && i <= 2 * n) && ((k < 0 || k == n) || i + 1 < 2 * k)) && 2 * n <= i) && ((((i + 1 < 2 + 2 * n || i + 1 < 2 + i / 2 * 2) || i + 1 < 0) && (((-1 + n < 0 || -2 + 2 * n < i + 1) || (i + 1) / 2 * 2 < i + 1) || (i + 1) / 2 < 0)) || ((!(i < 0) || i % 2 == 0) && i % 2 == 0)))) || (((2 + 1 == i && (((((k < 0 || k == n) || i + 1 < 2 * k) && ((((i + 1 < 2 + 2 * n || i + 1 < 2 + i / 2 * 2) || i + 1 < 0) && (((-1 + n < 0 || -2 + 2 * n < i + 1) || (i + 1) / 2 * 2 < i + 1) || (i + 1) / 2 < 0)) || ((!(i < 0) || i % 2 == 0) && i % 2 == 0))) || (((-1 + n == 0 && i <= 0 + 1 + 1) && 0 + 1 < 2 * k) && ((((i + 1 < 2 + 2 * n || i + 1 < 2 + i / 2 * 2) || i + 1 < 0) && (((-1 + n < 0 || -2 + 2 * n < i + 1) || (i + 1) / 2 * 2 < i + 1) || (i + 1) / 2 < 0)) || ((!(i < 0) || i % 2 == 0) && i % 2 == 0)))) || (((((((!(k + -1 * n + 1 <= 0) || n <= k) && i <= 0 + 1) && (i <= -1 + 2 * n || k + -1 * n + 1 <= 0)) && 0 <= -1 + 2 * k) || i < 2 * k) || (i <= 0 + 1 && 0 <= -1 + 2 * k)) && ((((i + 1 < 2 + 2 * n || i + 1 < 2 + i / 2 * 2) || i + 1 < 0) && (((-1 + n < 0 || -2 + 2 * n < i + 1) || (i + 1) / 2 * 2 < i + 1) || (i + 1) / 2 < 0)) || ((!(i < 0) || i % 2 == 0) && i % 2 == 0))))) && -1 + n <= 1) && 0 <= -1 + (-1 + n)) - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2023-02-17 01:08:53,097 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