./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench/bresenham-ll.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/nla-digbench/bresenham-ll.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 68505a1040934ea3cdccf61a3fb1a3debf8c6c64330c175637d96b2737c92d5f --- Real Ultimate output --- This is Ultimate 0.2.2-?-574ddb4 [2023-02-17 06:45:53,106 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-17 06:45:53,108 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-17 06:45:53,135 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-17 06:45:53,136 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-17 06:45:53,138 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-17 06:45:53,141 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-17 06:45:53,143 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-17 06:45:53,145 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-17 06:45:53,149 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-17 06:45:53,150 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-17 06:45:53,152 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-17 06:45:53,152 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-17 06:45:53,154 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-17 06:45:53,155 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-17 06:45:53,157 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-17 06:45:53,157 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-17 06:45:53,158 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-17 06:45:53,159 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-17 06:45:53,163 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-17 06:45:53,164 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-17 06:45:53,165 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-17 06:45:53,166 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-17 06:45:53,166 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-17 06:45:53,172 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-17 06:45:53,172 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-17 06:45:53,173 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-17 06:45:53,174 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-17 06:45:53,174 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-17 06:45:53,175 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-17 06:45:53,175 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-17 06:45:53,176 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-17 06:45:53,177 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-17 06:45:53,178 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-17 06:45:53,179 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-17 06:45:53,179 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-17 06:45:53,179 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-17 06:45:53,180 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-17 06:45:53,180 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-17 06:45:53,181 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-17 06:45:53,181 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-17 06:45:53,182 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-02-17 06:45:53,204 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-17 06:45:53,204 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-17 06:45:53,205 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-17 06:45:53,205 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-17 06:45:53,206 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-17 06:45:53,206 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-17 06:45:53,206 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-17 06:45:53,206 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-17 06:45:53,206 INFO L138 SettingsManager]: * Use SBE=true [2023-02-17 06:45:53,207 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-17 06:45:53,207 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-17 06:45:53,207 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-17 06:45:53,207 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-17 06:45:53,208 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-17 06:45:53,208 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-17 06:45:53,208 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-17 06:45:53,209 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-17 06:45:53,209 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-17 06:45:53,209 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-17 06:45:53,209 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-17 06:45:53,209 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-17 06:45:53,209 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-17 06:45:53,209 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-17 06:45:53,210 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-17 06:45:53,210 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-17 06:45:53,210 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-17 06:45:53,210 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-17 06:45:53,210 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-17 06:45:53,211 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-17 06:45:53,211 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-17 06:45:53,211 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-17 06:45:53,211 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-17 06:45:53,211 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-17 06:45:53,211 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-17 06:45:53,212 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-17 06:45:53,212 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 68505a1040934ea3cdccf61a3fb1a3debf8c6c64330c175637d96b2737c92d5f [2023-02-17 06:45:53,422 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-17 06:45:53,447 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-17 06:45:53,449 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-17 06:45:53,450 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-17 06:45:53,450 INFO L275 PluginConnector]: CDTParser initialized [2023-02-17 06:45:53,451 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench/bresenham-ll.c [2023-02-17 06:45:54,493 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-17 06:45:54,650 INFO L351 CDTParser]: Found 1 translation units. [2023-02-17 06:45:54,651 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench/bresenham-ll.c [2023-02-17 06:45:54,655 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/91ad81ec8/ed93f44a07194d0aaf06aa637764c038/FLAG668a8327d [2023-02-17 06:45:54,664 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/91ad81ec8/ed93f44a07194d0aaf06aa637764c038 [2023-02-17 06:45:54,666 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-17 06:45:54,668 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-17 06:45:54,670 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-17 06:45:54,670 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-17 06:45:54,672 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-17 06:45:54,672 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.02 06:45:54" (1/1) ... [2023-02-17 06:45:54,673 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73731529 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 06:45:54, skipping insertion in model container [2023-02-17 06:45:54,673 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.02 06:45:54" (1/1) ... [2023-02-17 06:45:54,678 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-17 06:45:54,690 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-17 06:45:54,782 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/nla-digbench/bresenham-ll.c[597,610] [2023-02-17 06:45:54,801 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-17 06:45:54,810 INFO L203 MainTranslator]: Completed pre-run [2023-02-17 06:45:54,820 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/nla-digbench/bresenham-ll.c[597,610] [2023-02-17 06:45:54,832 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-17 06:45:54,842 INFO L208 MainTranslator]: Completed translation [2023-02-17 06:45:54,842 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 06:45:54 WrapperNode [2023-02-17 06:45:54,842 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-17 06:45:54,843 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-17 06:45:54,843 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-17 06:45:54,844 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-17 06:45:54,849 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 06:45:54" (1/1) ... [2023-02-17 06:45:54,853 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 06:45:54" (1/1) ... [2023-02-17 06:45:54,864 INFO L138 Inliner]: procedures = 14, calls = 9, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 49 [2023-02-17 06:45:54,864 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-17 06:45:54,865 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-17 06:45:54,865 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-17 06:45:54,865 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-17 06:45:54,871 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 06:45:54" (1/1) ... [2023-02-17 06:45:54,871 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 06:45:54" (1/1) ... [2023-02-17 06:45:54,872 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 06:45:54" (1/1) ... [2023-02-17 06:45:54,872 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 06:45:54" (1/1) ... [2023-02-17 06:45:54,874 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 06:45:54" (1/1) ... [2023-02-17 06:45:54,876 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 06:45:54" (1/1) ... [2023-02-17 06:45:54,876 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 06:45:54" (1/1) ... [2023-02-17 06:45:54,877 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 06:45:54" (1/1) ... [2023-02-17 06:45:54,878 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-17 06:45:54,878 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-17 06:45:54,878 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-17 06:45:54,879 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-17 06:45:54,879 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 06:45:54" (1/1) ... [2023-02-17 06:45:54,883 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-17 06:45:54,891 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 06:45:54,919 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 06:45:54,935 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 06:45:54,951 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-17 06:45:54,951 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-17 06:45:54,951 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-17 06:45:54,951 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-17 06:45:54,951 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-02-17 06:45:54,952 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-02-17 06:45:54,999 INFO L235 CfgBuilder]: Building ICFG [2023-02-17 06:45:55,001 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-17 06:45:55,151 INFO L276 CfgBuilder]: Performing block encoding [2023-02-17 06:45:55,160 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-17 06:45:55,172 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2023-02-17 06:45:55,175 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 06:45:55 BoogieIcfgContainer [2023-02-17 06:45:55,175 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-17 06:45:55,177 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-17 06:45:55,177 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-17 06:45:55,179 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-17 06:45:55,179 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.02 06:45:54" (1/3) ... [2023-02-17 06:45:55,180 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5cbb06c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.02 06:45:55, skipping insertion in model container [2023-02-17 06:45:55,180 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 06:45:54" (2/3) ... [2023-02-17 06:45:55,180 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5cbb06c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.02 06:45:55, skipping insertion in model container [2023-02-17 06:45:55,180 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 06:45:55" (3/3) ... [2023-02-17 06:45:55,181 INFO L112 eAbstractionObserver]: Analyzing ICFG bresenham-ll.c [2023-02-17 06:45:55,208 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-17 06:45:55,209 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-02-17 06:45:55,271 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-17 06:45:55,293 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;@115aede0, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-17 06:45:55,293 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-02-17 06:45:55,296 INFO L276 IsEmpty]: Start isEmpty. Operand has 19 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 15 states have internal predecessors, (20), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-17 06:45:55,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-02-17 06:45:55,307 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 06:45:55,308 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-02-17 06:45:55,308 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 06:45:55,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 06:45:55,312 INFO L85 PathProgramCache]: Analyzing trace with hash 1811601823, now seen corresponding path program 1 times [2023-02-17 06:45:55,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 06:45:55,318 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664460666] [2023-02-17 06:45:55,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 06:45:55,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 06:45:55,381 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-17 06:45:55,381 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [748699652] [2023-02-17 06:45:55,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 06:45:55,382 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 06:45:55,382 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 06:45:55,383 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 06:45:55,384 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 06:45:55,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 06:45:55,435 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 16 conjunts are in the unsatisfiable core [2023-02-17 06:45:55,439 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 06:45:55,527 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 06:45:55,527 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-17 06:45:55,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 06:45:55,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664460666] [2023-02-17 06:45:55,528 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-17 06:45:55,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [748699652] [2023-02-17 06:45:55,528 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [748699652] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 06:45:55,528 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 06:45:55,528 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-02-17 06:45:55,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178547712] [2023-02-17 06:45:55,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 06:45:55,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-17 06:45:55,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 06:45:55,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-17 06:45:55,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-02-17 06:45:55,557 INFO L87 Difference]: Start difference. First operand has 19 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 15 states have internal predecessors, (20), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 06:45:55,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 06:45:55,705 INFO L93 Difference]: Finished difference Result 50 states and 69 transitions. [2023-02-17 06:45:55,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-17 06:45:55,708 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 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 06:45:55,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 06:45:55,714 INFO L225 Difference]: With dead ends: 50 [2023-02-17 06:45:55,715 INFO L226 Difference]: Without dead ends: 23 [2023-02-17 06:45:55,717 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-02-17 06:45:55,721 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 17 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-17 06:45:55,723 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 54 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-17 06:45:55,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2023-02-17 06:45:55,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 22. [2023-02-17 06:45:55,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 16 states have (on average 1.1875) internal successors, (19), 17 states have internal predecessors, (19), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-17 06:45:55,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2023-02-17 06:45:55,755 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 7 [2023-02-17 06:45:55,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 06:45:55,756 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions. [2023-02-17 06:45:55,756 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 06:45:55,756 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2023-02-17 06:45:55,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-02-17 06:45:55,757 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 06:45:55,758 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 06:45:55,778 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 06:45:55,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-02-17 06:45:55,965 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 06:45:55,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 06:45:55,966 INFO L85 PathProgramCache]: Analyzing trace with hash -343010020, now seen corresponding path program 1 times [2023-02-17 06:45:55,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 06:45:55,966 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969935399] [2023-02-17 06:45:55,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 06:45:55,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 06:45:55,974 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-17 06:45:55,981 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1673764834] [2023-02-17 06:45:55,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 06:45:55,981 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 06:45:55,982 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 06:45:55,983 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 06:45:55,985 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 06:45:56,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 06:45:56,030 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 25 conjunts are in the unsatisfiable core [2023-02-17 06:45:56,031 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 06:45:56,151 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 06:45:56,152 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 06:45:56,408 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 06:45:56,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 06:45:56,409 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969935399] [2023-02-17 06:45:56,409 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-17 06:45:56,410 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1673764834] [2023-02-17 06:45:56,410 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1673764834] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 06:45:56,411 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-17 06:45:56,413 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 16 [2023-02-17 06:45:56,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927370370] [2023-02-17 06:45:56,414 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-17 06:45:56,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-02-17 06:45:56,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 06:45:56,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-02-17 06:45:56,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2023-02-17 06:45:56,416 INFO L87 Difference]: Start difference. First operand 22 states and 24 transitions. Second operand has 16 states, 14 states have (on average 1.6428571428571428) internal successors, (23), 15 states have internal predecessors, (23), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-17 06:45:56,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 06:45:56,642 INFO L93 Difference]: Finished difference Result 36 states and 41 transitions. [2023-02-17 06:45:56,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-02-17 06:45:56,642 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 1.6428571428571428) internal successors, (23), 15 states have internal predecessors, (23), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 16 [2023-02-17 06:45:56,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 06:45:56,643 INFO L225 Difference]: With dead ends: 36 [2023-02-17 06:45:56,643 INFO L226 Difference]: Without dead ends: 30 [2023-02-17 06:45:56,643 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 13 SyntacticMatches, 3 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=76, Invalid=344, Unknown=0, NotChecked=0, Total=420 [2023-02-17 06:45:56,644 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 31 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-17 06:45:56,644 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 33 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-17 06:45:56,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2023-02-17 06:45:56,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 29. [2023-02-17 06:45:56,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 22 states have internal predecessors, (25), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-02-17 06:45:56,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 32 transitions. [2023-02-17 06:45:56,649 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 32 transitions. Word has length 16 [2023-02-17 06:45:56,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 06:45:56,649 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 32 transitions. [2023-02-17 06:45:56,649 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 1.6428571428571428) internal successors, (23), 15 states have internal predecessors, (23), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-17 06:45:56,650 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 32 transitions. [2023-02-17 06:45:56,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-02-17 06:45:56,651 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 06:45:56,651 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 06:45:56,658 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 06:45:56,858 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,SelfDestructingSolverStorable1 [2023-02-17 06:45:56,858 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 06:45:56,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 06:45:56,858 INFO L85 PathProgramCache]: Analyzing trace with hash -1156539182, now seen corresponding path program 1 times [2023-02-17 06:45:56,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 06:45:56,859 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548038337] [2023-02-17 06:45:56,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 06:45:56,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 06:45:56,865 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-17 06:45:56,865 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [574571705] [2023-02-17 06:45:56,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 06:45:56,865 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 06:45:56,865 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 06:45:56,866 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 06:45:56,868 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 06:45:56,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 06:45:56,901 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 29 conjunts are in the unsatisfiable core [2023-02-17 06:45:56,903 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 06:45:56,991 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-17 06:45:56,991 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 06:45:57,209 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-17 06:45:57,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 06:45:57,209 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548038337] [2023-02-17 06:45:57,209 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-17 06:45:57,210 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [574571705] [2023-02-17 06:45:57,210 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [574571705] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 06:45:57,210 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-17 06:45:57,210 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12] total 23 [2023-02-17 06:45:57,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322576915] [2023-02-17 06:45:57,210 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-17 06:45:57,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-02-17 06:45:57,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 06:45:57,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-02-17 06:45:57,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=430, Unknown=0, NotChecked=0, Total=506 [2023-02-17 06:45:57,212 INFO L87 Difference]: Start difference. First operand 29 states and 32 transitions. Second operand has 23 states, 19 states have (on average 1.5789473684210527) internal successors, (30), 20 states have internal predecessors, (30), 6 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-02-17 06:45:57,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 06:45:57,747 INFO L93 Difference]: Finished difference Result 37 states and 43 transitions. [2023-02-17 06:45:57,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-02-17 06:45:57,748 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 19 states have (on average 1.5789473684210527) internal successors, (30), 20 states have internal predecessors, (30), 6 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 23 [2023-02-17 06:45:57,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 06:45:57,748 INFO L225 Difference]: With dead ends: 37 [2023-02-17 06:45:57,748 INFO L226 Difference]: Without dead ends: 0 [2023-02-17 06:45:57,749 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 21 SyntacticMatches, 2 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 320 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=261, Invalid=1299, Unknown=0, NotChecked=0, Total=1560 [2023-02-17 06:45:57,749 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 44 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 316 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 342 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 316 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-17 06:45:57,750 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 38 Invalid, 342 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 316 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-17 06:45:57,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-02-17 06:45:57,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-02-17 06:45:57,750 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 06:45:57,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-02-17 06:45:57,750 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 23 [2023-02-17 06:45:57,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 06:45:57,751 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-02-17 06:45:57,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 19 states have (on average 1.5789473684210527) internal successors, (30), 20 states have internal predecessors, (30), 6 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-02-17 06:45:57,751 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-02-17 06:45:57,751 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-02-17 06:45:57,753 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-02-17 06:45:57,759 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 06:45:57,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 06:45:57,959 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-02-17 06:45:57,967 INFO L895 garLoopResultBuilder]: At program point L33(line 33) the Hoare annotation is: (let ((.cse18 (* |ULTIMATE.start_main_~Y~0#1| |ULTIMATE.start_main_~x~0#1|))) (let ((.cse15 (- |ULTIMATE.start_main_~v~0#1|)) (.cse23 (* 2 .cse18)) (.cse3 (- (* 2 (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|)))) (.cse4 (- |ULTIMATE.start_main_~X~0#1|)) (.cse22 (* 2 |ULTIMATE.start_main_~Y~0#1|))) (let ((.cse14 (+ (+ (+ .cse23 .cse3) .cse4) .cse22)) (.cse5 (- (* |ULTIMATE.start_main_~X~0#1| (- 1)))) (.cse7 (* 2 |ULTIMATE.start_main_~y~0#1|)) (.cse1 (<= |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~X~0#1|)) (.cse17 (+ |ULTIMATE.start_main_~x~0#1| (- 1))) (.cse11 (+ (+ (+ (+ (* 2 |ULTIMATE.start_main_~yx~0#1|) (- (* 2 |ULTIMATE.start_main_~xy~0#1|))) .cse4) .cse22) .cse15)) (.cse19 (* |ULTIMATE.start_main_~X~0#1| |ULTIMATE.start_main_~y~0#1|))) (let ((.cse0 (= 0 (+ (+ (+ (+ .cse23 (- (* 2 .cse19))) .cse4) .cse22) .cse15))) (.cse9 (= 0 .cse11)) (.cse12 (+ .cse22 .cse4)) (.cse16 (= .cse17 0)) (.cse6 (- (* .cse19 (- 2)))) (.cse10 (= |ULTIMATE.start_main_~xy~0#1| (* |ULTIMATE.start_main_~X~0#1| 0))) (.cse8 (or (= 0 (+ (+ .cse14 (+ .cse5 (- (* |ULTIMATE.start_main_~xy~0#1| (- 2))) (- (* |ULTIMATE.start_main_~yx~0#1| 2)) (- (* |ULTIMATE.start_main_~Y~0#1| 2)))) .cse7)) .cse1)) (.cse13 (= |ULTIMATE.start_main_~y~0#1| 0))) (or (and .cse0 (or .cse1 (forall ((|ULTIMATE.start_main_~Y~0#1| Int)) (= 0 (+ (let ((.cse2 (* |ULTIMATE.start_main_~Y~0#1| |ULTIMATE.start_main_~x~0#1|))) (+ (+ (+ (+ (* 2 .cse2) .cse3) .cse4) (* 2 |ULTIMATE.start_main_~Y~0#1|)) (+ .cse5 .cse6 (- (* .cse2 2)) (- (* |ULTIMATE.start_main_~Y~0#1| 2))))) .cse7)))) .cse8 .cse9) (and .cse10 (= 0 (+ .cse11 .cse7)) (= |ULTIMATE.start_main_~x~0#1| 0) .cse8 (= |ULTIMATE.start_main_~v~0#1| .cse12) .cse13 (= |ULTIMATE.start_main_~yx~0#1| (* |ULTIMATE.start_main_~Y~0#1| 0)) .cse9 (= 0 (+ (+ .cse14 .cse15) .cse7))) (and .cse0 .cse16 (<= .cse17 |ULTIMATE.start_main_~X~0#1|) (= |ULTIMATE.start_main_~yx~0#1| .cse18) (= |ULTIMATE.start_main_~xy~0#1| .cse19) (= (+ |ULTIMATE.start_main_~y~0#1| (- 1)) 0) .cse9) (and (= (+ |ULTIMATE.start_main_~v~0#1| (* |ULTIMATE.start_main_~Y~0#1| (- 2))) .cse12) .cse16 (let ((.cse20 (+ 1 |ULTIMATE.start_main_~x~0#1|))) (or (<= .cse20 |ULTIMATE.start_main_~X~0#1|) (forall ((|ULTIMATE.start_main_~Y~0#1| Int)) (= 0 (+ (let ((.cse21 (* |ULTIMATE.start_main_~Y~0#1| .cse20))) (+ (+ (+ (+ (* 2 .cse21) (- (* 2 (* .cse20 |ULTIMATE.start_main_~y~0#1|)))) .cse4) (* 2 |ULTIMATE.start_main_~Y~0#1|)) (+ .cse5 .cse6 (- (* .cse21 2)) (- (* |ULTIMATE.start_main_~Y~0#1| 2))))) .cse7))))) .cse10 (= |ULTIMATE.start_main_~yx~0#1| (* |ULTIMATE.start_main_~Y~0#1| 1)) .cse8 .cse13)))))) [2023-02-17 06:45:57,967 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-02-17 06:45:57,968 INFO L899 garLoopResultBuilder]: For program point L33-1(lines 30 45) no Hoare annotation was computed. [2023-02-17 06:45:57,968 INFO L895 garLoopResultBuilder]: At program point L48(line 48) the Hoare annotation is: (let ((.cse15 (* |ULTIMATE.start_main_~X~0#1| |ULTIMATE.start_main_~y~0#1|))) (let ((.cse17 (* 2 (* |ULTIMATE.start_main_~Y~0#1| |ULTIMATE.start_main_~x~0#1|))) (.cse6 (- (* 2 .cse15))) (.cse9 (- |ULTIMATE.start_main_~v~0#1|)) (.cse8 (* 2 |ULTIMATE.start_main_~Y~0#1|)) (.cse7 (- |ULTIMATE.start_main_~X~0#1|)) (.cse5 (* |ULTIMATE.start_main_~Y~0#1| 1)) (.cse2 (+ |ULTIMATE.start_main_~x~0#1| (- 1)))) (let ((.cse1 (= .cse2 0)) (.cse3 (= |ULTIMATE.start_main_~yx~0#1| .cse5)) (.cse11 (= |ULTIMATE.start_main_~xy~0#1| (* |ULTIMATE.start_main_~X~0#1| 0))) (.cse10 (+ .cse8 .cse7)) (.cse12 (= |ULTIMATE.start_main_~y~0#1| 0)) (.cse0 (= 0 (+ (+ (+ (+ .cse17 .cse6) .cse7) .cse8) .cse9))) (.cse4 (<= |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~X~0#1|))) (or (and .cse0 .cse1 (not (<= 1 |ULTIMATE.start_main_~X~0#1|)) (<= .cse2 |ULTIMATE.start_main_~X~0#1|) .cse3 (not .cse4) (= 0 (+ (+ (+ (+ (* 2 .cse5) .cse6) .cse7) .cse8) .cse9)) (= |ULTIMATE.start_main_~xy~0#1| (* 1 |ULTIMATE.start_main_~y~0#1|)) (= (+ |ULTIMATE.start_main_~y~0#1| (- 1)) 0) (<= (+ 1 (- 1)) |ULTIMATE.start_main_~X~0#1|)) (and (= (+ |ULTIMATE.start_main_~v~0#1| (* |ULTIMATE.start_main_~Y~0#1| (- 2))) .cse10) .cse1 .cse11 .cse3 .cse12) (and .cse11 (= |ULTIMATE.start_main_~x~0#1| 0) (= |ULTIMATE.start_main_~v~0#1| .cse10) .cse12 (= |ULTIMATE.start_main_~yx~0#1| (* |ULTIMATE.start_main_~Y~0#1| 0))) (let ((.cse14 (- (* 2 (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|)))) (.cse16 (* 2 |ULTIMATE.start_main_~y~0#1|))) (and .cse0 (or .cse4 (forall ((|ULTIMATE.start_main_~Y~0#1| Int)) (= 0 (+ (let ((.cse13 (* |ULTIMATE.start_main_~Y~0#1| |ULTIMATE.start_main_~x~0#1|))) (+ (+ (+ (+ (* 2 .cse13) .cse14) .cse7) (* 2 |ULTIMATE.start_main_~Y~0#1|)) (+ (- (* |ULTIMATE.start_main_~X~0#1| (- 1))) (- (* .cse15 (- 2))) (- (* .cse13 2)) (- (* |ULTIMATE.start_main_~Y~0#1| 2))))) .cse16)))) (= 0 (+ (+ (+ (+ (+ (* 2 |ULTIMATE.start_main_~yx~0#1|) (- (* 2 |ULTIMATE.start_main_~xy~0#1|))) .cse7) .cse8) .cse9) .cse16)) (= 0 (+ (+ (+ (+ (+ .cse17 .cse14) .cse7) .cse8) .cse9) .cse16)))))))) [2023-02-17 06:45:57,968 INFO L899 garLoopResultBuilder]: For program point L48-1(line 48) no Hoare annotation was computed. [2023-02-17 06:45:57,968 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-02-17 06:45:57,968 INFO L902 garLoopResultBuilder]: At program point main_returnLabel#1(lines 21 51) the Hoare annotation is: true [2023-02-17 06:45:57,968 INFO L899 garLoopResultBuilder]: For program point L38(lines 38 43) no Hoare annotation was computed. [2023-02-17 06:45:57,969 INFO L899 garLoopResultBuilder]: For program point L38-2(lines 38 43) no Hoare annotation was computed. [2023-02-17 06:45:57,969 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2023-02-17 06:45:57,969 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2023-02-17 06:45:57,969 INFO L895 garLoopResultBuilder]: At program point L30-2(lines 30 45) the Hoare annotation is: (let ((.cse11 (* 2 (* |ULTIMATE.start_main_~Y~0#1| |ULTIMATE.start_main_~x~0#1|))) (.cse16 (* |ULTIMATE.start_main_~X~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse14 (- |ULTIMATE.start_main_~v~0#1|)) (.cse13 (* 2 |ULTIMATE.start_main_~Y~0#1|)) (.cse4 (- |ULTIMATE.start_main_~X~0#1|)) (.cse10 (+ |ULTIMATE.start_main_~x~0#1| (- 1)))) (let ((.cse1 (= .cse10 0)) (.cse0 (+ .cse13 .cse4)) (.cse8 (= |ULTIMATE.start_main_~y~0#1| 0)) (.cse9 (= 0 (+ (+ (+ (+ .cse11 (- (* 2 .cse16))) .cse4) .cse13) .cse14))) (.cse12 (- (* 2 (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|)))) (.cse5 (- (* |ULTIMATE.start_main_~X~0#1| (- 1)))) (.cse6 (- (* .cse16 (- 2)))) (.cse7 (* 2 |ULTIMATE.start_main_~y~0#1|))) (or (and (= (+ |ULTIMATE.start_main_~v~0#1| (* |ULTIMATE.start_main_~Y~0#1| (- 2))) .cse0) .cse1 (let ((.cse2 (+ 1 |ULTIMATE.start_main_~x~0#1|))) (or (<= .cse2 |ULTIMATE.start_main_~X~0#1|) (forall ((|ULTIMATE.start_main_~Y~0#1| Int)) (= 0 (+ (let ((.cse3 (* |ULTIMATE.start_main_~Y~0#1| .cse2))) (+ (+ (+ (+ (* 2 .cse3) (- (* 2 (* .cse2 |ULTIMATE.start_main_~y~0#1|)))) .cse4) (* 2 |ULTIMATE.start_main_~Y~0#1|)) (+ .cse5 .cse6 (- (* .cse3 2)) (- (* |ULTIMATE.start_main_~Y~0#1| 2))))) .cse7))))) .cse8) (and .cse9 .cse1 (<= .cse10 |ULTIMATE.start_main_~X~0#1|) (= (+ |ULTIMATE.start_main_~y~0#1| (- 1)) 0)) (and (= |ULTIMATE.start_main_~x~0#1| 0) (= |ULTIMATE.start_main_~v~0#1| .cse0) .cse8 (= 0 (+ (+ (+ (+ (+ .cse11 .cse12) .cse4) .cse13) .cse14) .cse7))) (and .cse9 (or (<= |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~X~0#1|) (forall ((|ULTIMATE.start_main_~Y~0#1| Int)) (= 0 (+ (let ((.cse15 (* |ULTIMATE.start_main_~Y~0#1| |ULTIMATE.start_main_~x~0#1|))) (+ (+ (+ (+ (* 2 .cse15) .cse12) .cse4) (* 2 |ULTIMATE.start_main_~Y~0#1|)) (+ .cse5 .cse6 (- (* .cse15 2)) (- (* |ULTIMATE.start_main_~Y~0#1| 2))))) .cse7)))))))) [2023-02-17 06:45:57,969 INFO L899 garLoopResultBuilder]: For program point L30-3(lines 30 45) no Hoare annotation was computed. [2023-02-17 06:45:57,969 INFO L899 garLoopResultBuilder]: For program point L15(lines 15 16) no Hoare annotation was computed. [2023-02-17 06:45:57,969 INFO L899 garLoopResultBuilder]: For program point L14(lines 14 17) no Hoare annotation was computed. [2023-02-17 06:45:57,970 INFO L899 garLoopResultBuilder]: For program point L14-2(lines 13 19) no Hoare annotation was computed. [2023-02-17 06:45:57,970 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 13 19) no Hoare annotation was computed. [2023-02-17 06:45:57,970 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 13 19) the Hoare annotation is: true [2023-02-17 06:45:57,970 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 16) no Hoare annotation was computed. [2023-02-17 06:45:57,973 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-02-17 06:45:57,974 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-02-17 06:45:57,985 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~Y~0#1,QUANTIFIED] [2023-02-17 06:45:57,986 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~Y~0#1,QUANTIFIED] [2023-02-17 06:45:57,986 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~Y~0#1,QUANTIFIED] [2023-02-17 06:45:57,986 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~Y~0#1,QUANTIFIED] [2023-02-17 06:45:57,988 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~Y~0#1,QUANTIFIED] [2023-02-17 06:45:57,989 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~Y~0#1,QUANTIFIED] [2023-02-17 06:45:57,989 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~Y~0#1,QUANTIFIED] [2023-02-17 06:45:57,989 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~Y~0#1,QUANTIFIED] [2023-02-17 06:45:57,998 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~Y~0#1,QUANTIFIED] [2023-02-17 06:45:57,998 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~Y~0#1,QUANTIFIED] [2023-02-17 06:45:57,998 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~Y~0#1,QUANTIFIED] [2023-02-17 06:45:57,998 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~Y~0#1,QUANTIFIED] [2023-02-17 06:45:57,999 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~Y~0#1,QUANTIFIED] [2023-02-17 06:45:57,999 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~Y~0#1,QUANTIFIED] [2023-02-17 06:45:57,999 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~Y~0#1,QUANTIFIED] [2023-02-17 06:45:57,999 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~Y~0#1,QUANTIFIED] [2023-02-17 06:45:58,009 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.02 06:45:58 BoogieIcfgContainer [2023-02-17 06:45:58,009 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-02-17 06:45:58,010 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-02-17 06:45:58,010 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-02-17 06:45:58,010 INFO L275 PluginConnector]: Witness Printer initialized [2023-02-17 06:45:58,010 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 06:45:55" (3/4) ... [2023-02-17 06:45:58,012 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-02-17 06:45:58,016 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2023-02-17 06:45:58,019 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2023-02-17 06:45:58,019 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2023-02-17 06:45:58,023 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-02-17 06:45:58,023 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-02-17 06:45:58,047 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-02-17 06:45:58,048 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-02-17 06:45:58,049 INFO L158 Benchmark]: Toolchain (without parser) took 3381.74ms. Allocated memory was 151.0MB in the beginning and 188.7MB in the end (delta: 37.7MB). Free memory was 105.1MB in the beginning and 142.5MB in the end (delta: -37.3MB). Peak memory consumption was 3.5MB. Max. memory is 16.1GB. [2023-02-17 06:45:58,049 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 151.0MB. Free memory is still 126.6MB. There was no memory consumed. Max. memory is 16.1GB. [2023-02-17 06:45:58,050 INFO L158 Benchmark]: CACSL2BoogieTranslator took 173.01ms. Allocated memory is still 151.0MB. Free memory was 104.9MB in the beginning and 94.4MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-02-17 06:45:58,050 INFO L158 Benchmark]: Boogie Procedure Inliner took 20.80ms. Allocated memory is still 151.0MB. Free memory was 94.4MB in the beginning and 92.9MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-17 06:45:58,050 INFO L158 Benchmark]: Boogie Preprocessor took 13.19ms. Allocated memory is still 151.0MB. Free memory was 92.9MB in the beginning and 91.7MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-17 06:45:58,050 INFO L158 Benchmark]: RCFGBuilder took 296.88ms. Allocated memory is still 151.0MB. Free memory was 91.7MB in the beginning and 81.0MB in the end (delta: 10.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-02-17 06:45:58,051 INFO L158 Benchmark]: TraceAbstraction took 2832.70ms. Allocated memory was 151.0MB in the beginning and 188.7MB in the end (delta: 37.7MB). Free memory was 80.2MB in the beginning and 145.6MB in the end (delta: -65.4MB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-17 06:45:58,051 INFO L158 Benchmark]: Witness Printer took 39.00ms. Allocated memory is still 188.7MB. Free memory was 145.6MB in the beginning and 142.5MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-02-17 06:45:58,053 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 151.0MB. Free memory is still 126.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 173.01ms. Allocated memory is still 151.0MB. Free memory was 104.9MB in the beginning and 94.4MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 20.80ms. Allocated memory is still 151.0MB. Free memory was 94.4MB in the beginning and 92.9MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 13.19ms. Allocated memory is still 151.0MB. Free memory was 92.9MB in the beginning and 91.7MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 296.88ms. Allocated memory is still 151.0MB. Free memory was 91.7MB in the beginning and 81.0MB in the end (delta: 10.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 2832.70ms. Allocated memory was 151.0MB in the beginning and 188.7MB in the end (delta: 37.7MB). Free memory was 80.2MB in the beginning and 145.6MB in the end (delta: -65.4MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 39.00ms. Allocated memory is still 188.7MB. Free memory was 145.6MB in the beginning and 142.5MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~Y~0#1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~Y~0#1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~Y~0#1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~Y~0#1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~Y~0#1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~Y~0#1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~Y~0#1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~Y~0#1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~Y~0#1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~Y~0#1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~Y~0#1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~Y~0#1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~Y~0#1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~Y~0#1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~Y~0#1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~Y~0#1,QUANTIFIED] * 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: 16]: 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 2 procedures, 19 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 2.7s, OverallIterations: 3, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 93 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 92 mSDsluCounter, 125 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 99 mSDsCounter, 48 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 526 IncrementalHoareTripleChecker+Invalid, 574 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 48 mSolverCounterUnsat, 26 mSDtfsCounter, 526 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 104 GetRequests, 36 SyntacticMatches, 5 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 363 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=29occurred in iteration=2, InterpolantAutomatonStates: 47, 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, 3 MinimizatonAttempts, 2 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 14 PreInvPairs, 28 NumberOfFragments, 1014 HoareAnnotationTreeSize, 14 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 46 NumberOfCodeBlocks, 46 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 80 ConstructedInterpolants, 3 QuantifiedInterpolants, 1001 SizeOfPredicates, 22 NumberOfNonLiveVariables, 198 ConjunctsInSsa, 70 ConjunctsInUnsatCore, 5 InterpolantComputations, 1 PerfectInterpolantSequences, 20/30 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: 30]: Loop Invariant [2023-02-17 06:45:58,071 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~Y~0#1,QUANTIFIED] [2023-02-17 06:45:58,071 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~Y~0#1,QUANTIFIED] [2023-02-17 06:45:58,071 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~Y~0#1,QUANTIFIED] [2023-02-17 06:45:58,071 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~Y~0#1,QUANTIFIED] [2023-02-17 06:45:58,072 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~Y~0#1,QUANTIFIED] [2023-02-17 06:45:58,072 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~Y~0#1,QUANTIFIED] [2023-02-17 06:45:58,072 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~Y~0#1,QUANTIFIED] [2023-02-17 06:45:58,072 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~Y~0#1,QUANTIFIED] [2023-02-17 06:45:58,072 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~Y~0#1,QUANTIFIED] [2023-02-17 06:45:58,072 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~Y~0#1,QUANTIFIED] [2023-02-17 06:45:58,072 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~Y~0#1,QUANTIFIED] [2023-02-17 06:45:58,072 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~Y~0#1,QUANTIFIED] [2023-02-17 06:45:58,072 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~Y~0#1,QUANTIFIED] [2023-02-17 06:45:58,072 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~Y~0#1,QUANTIFIED] [2023-02-17 06:45:58,073 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~Y~0#1,QUANTIFIED] [2023-02-17 06:45:58,073 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~Y~0#1,QUANTIFIED] Derived loop invariant: (((((v + Y * -2 == 2 * Y + -X && x + -1 == 0) && (1 + x <= X || (forall ULTIMATE.start_main_~Y~0#1 : int :: 0 == 2 * (ULTIMATE.start_main_~Y~0#1 * (1 + x)) + -(2 * ((1 + x) * y)) + -X + 2 * ULTIMATE.start_main_~Y~0#1 + (-(X * -1) + -(X * y * -2) + -(ULTIMATE.start_main_~Y~0#1 * (1 + x) * 2) + -(ULTIMATE.start_main_~Y~0#1 * 2)) + 2 * y))) && y == 0) || (((0 == 2 * (Y * x) + -(2 * (X * y)) + -X + 2 * Y + -v && x + -1 == 0) && x + -1 <= X) && y + -1 == 0)) || (((x == 0 && v == 2 * Y + -X) && y == 0) && 0 == 2 * (Y * x) + -(2 * (x * y)) + -X + 2 * Y + -v + 2 * y)) || (0 == 2 * (Y * x) + -(2 * (X * y)) + -X + 2 * Y + -v && (x <= X || (forall ULTIMATE.start_main_~Y~0#1 : int :: 0 == 2 * (ULTIMATE.start_main_~Y~0#1 * x) + -(2 * (x * y)) + -X + 2 * ULTIMATE.start_main_~Y~0#1 + (-(X * -1) + -(X * y * -2) + -(ULTIMATE.start_main_~Y~0#1 * x * 2) + -(ULTIMATE.start_main_~Y~0#1 * 2)) + 2 * y))) - InvariantResult [Line: 21]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2023-02-17 06:45:58,081 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