./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_valuebound1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 26d01a9c Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_valuebound1.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 1e1d72742850b95338b71e8d041fa264ac4d7956cbe86d6603297a369e94cb76 --- Real Ultimate output --- This is Ultimate 0.2.2-?-26d01a9 [2023-02-17 01:26:55,885 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-17 01:26:55,887 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-17 01:26:55,913 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-17 01:26:55,913 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-17 01:26:55,913 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-17 01:26:55,914 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-17 01:26:55,915 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-17 01:26:55,919 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-17 01:26:55,923 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-17 01:26:55,924 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-17 01:26:55,928 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-17 01:26:55,928 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-17 01:26:55,929 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-17 01:26:55,932 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-17 01:26:55,933 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-17 01:26:55,933 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-17 01:26:55,934 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-17 01:26:55,935 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-17 01:26:55,940 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-17 01:26:55,940 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-17 01:26:55,942 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-17 01:26:55,943 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-17 01:26:55,943 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-17 01:26:55,946 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-17 01:26:55,946 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-17 01:26:55,947 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-17 01:26:55,948 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-17 01:26:55,948 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-17 01:26:55,949 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-17 01:26:55,949 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-17 01:26:55,949 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-17 01:26:55,950 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-17 01:26:55,951 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-17 01:26:55,952 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-17 01:26:55,952 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-17 01:26:55,952 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-17 01:26:55,952 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-17 01:26:55,952 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-17 01:26:55,953 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-17 01:26:55,954 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-17 01:26:55,955 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-02-17 01:26:55,979 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-17 01:26:55,979 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-17 01:26:55,979 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-17 01:26:55,979 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-17 01:26:55,980 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-17 01:26:55,980 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-17 01:26:55,980 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-17 01:26:55,980 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-17 01:26:55,980 INFO L138 SettingsManager]: * Use SBE=true [2023-02-17 01:26:55,980 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-17 01:26:55,981 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-17 01:26:55,981 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-17 01:26:55,981 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-17 01:26:55,981 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-17 01:26:55,981 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-17 01:26:55,981 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-17 01:26:55,981 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-17 01:26:55,982 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-17 01:26:55,982 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-17 01:26:55,982 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-17 01:26:55,982 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-17 01:26:55,982 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-17 01:26:55,982 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-17 01:26:55,982 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-17 01:26:55,982 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-17 01:26:55,982 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-17 01:26:55,982 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-17 01:26:55,982 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-17 01:26:55,983 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-17 01:26:55,983 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-17 01:26:55,983 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-17 01:26:55,983 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-17 01:26:55,983 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-17 01:26:55,983 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-17 01:26:55,983 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-17 01:26:55,983 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1e1d72742850b95338b71e8d041fa264ac4d7956cbe86d6603297a369e94cb76 [2023-02-17 01:26:56,126 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-17 01:26:56,142 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-17 01:26:56,144 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-17 01:26:56,144 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-17 01:26:56,145 INFO L275 PluginConnector]: CDTParser initialized [2023-02-17 01:26:56,146 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_valuebound1.c [2023-02-17 01:26:57,064 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-17 01:26:57,234 INFO L351 CDTParser]: Found 1 translation units. [2023-02-17 01:26:57,235 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_valuebound1.c [2023-02-17 01:26:57,239 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/96919494e/a2ef10510f5c4c4f96ffc128eed6d0b3/FLAG3d0bc2832 [2023-02-17 01:26:57,247 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/96919494e/a2ef10510f5c4c4f96ffc128eed6d0b3 [2023-02-17 01:26:57,249 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-17 01:26:57,250 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-17 01:26:57,251 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-17 01:26:57,251 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-17 01:26:57,253 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-17 01:26:57,254 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.02 01:26:57" (1/1) ... [2023-02-17 01:26:57,254 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19e2b34e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 01:26:57, skipping insertion in model container [2023-02-17 01:26:57,254 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.02 01:26:57" (1/1) ... [2023-02-17 01:26:57,259 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-17 01:26:57,268 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-17 01:26:57,359 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-scaling/bresenham-ll_valuebound1.c[597,610] [2023-02-17 01:26:57,369 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-17 01:26:57,374 INFO L203 MainTranslator]: Completed pre-run [2023-02-17 01:26:57,381 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-scaling/bresenham-ll_valuebound1.c[597,610] [2023-02-17 01:26:57,386 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-17 01:26:57,394 INFO L208 MainTranslator]: Completed translation [2023-02-17 01:26:57,394 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 01:26:57 WrapperNode [2023-02-17 01:26:57,394 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-17 01:26:57,395 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-17 01:26:57,395 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-17 01:26:57,395 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-17 01:26:57,399 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 01:26:57" (1/1) ... [2023-02-17 01:26:57,404 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 01:26:57" (1/1) ... [2023-02-17 01:26:57,413 INFO L138 Inliner]: procedures = 14, calls = 11, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 51 [2023-02-17 01:26:57,413 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-17 01:26:57,414 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-17 01:26:57,414 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-17 01:26:57,414 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-17 01:26:57,419 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 01:26:57" (1/1) ... [2023-02-17 01:26:57,419 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 01:26:57" (1/1) ... [2023-02-17 01:26:57,420 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 01:26:57" (1/1) ... [2023-02-17 01:26:57,420 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 01:26:57" (1/1) ... [2023-02-17 01:26:57,422 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 01:26:57" (1/1) ... [2023-02-17 01:26:57,424 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 01:26:57" (1/1) ... [2023-02-17 01:26:57,424 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 01:26:57" (1/1) ... [2023-02-17 01:26:57,425 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 01:26:57" (1/1) ... [2023-02-17 01:26:57,426 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-17 01:26:57,426 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-17 01:26:57,426 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-17 01:26:57,426 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-17 01:26:57,427 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 01:26:57" (1/1) ... [2023-02-17 01:26:57,432 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-17 01:26:57,441 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 01:26:57,469 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 01:26:57,485 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 01:26:57,509 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-17 01:26:57,509 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-02-17 01:26:57,509 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-02-17 01:26:57,509 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-17 01:26:57,510 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-17 01:26:57,510 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-17 01:26:57,510 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-02-17 01:26:57,510 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-02-17 01:26:57,565 INFO L235 CfgBuilder]: Building ICFG [2023-02-17 01:26:57,566 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-17 01:26:57,650 INFO L276 CfgBuilder]: Performing block encoding [2023-02-17 01:26:57,654 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-17 01:26:57,654 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2023-02-17 01:26:57,655 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 01:26:57 BoogieIcfgContainer [2023-02-17 01:26:57,656 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-17 01:26:57,657 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-17 01:26:57,657 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-17 01:26:57,659 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-17 01:26:57,659 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.02 01:26:57" (1/3) ... [2023-02-17 01:26:57,660 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37aa25e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.02 01:26:57, skipping insertion in model container [2023-02-17 01:26:57,660 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 01:26:57" (2/3) ... [2023-02-17 01:26:57,660 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37aa25e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.02 01:26:57, skipping insertion in model container [2023-02-17 01:26:57,660 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 01:26:57" (3/3) ... [2023-02-17 01:26:57,661 INFO L112 eAbstractionObserver]: Analyzing ICFG bresenham-ll_valuebound1.c [2023-02-17 01:26:57,671 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-17 01:26:57,671 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-02-17 01:26:57,700 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-17 01:26:57,704 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;@1d417ad8, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-17 01:26:57,704 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-02-17 01:26:57,707 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 19 states have (on average 1.368421052631579) internal successors, (26), 20 states have internal predecessors, (26), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-02-17 01:26:57,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-02-17 01:26:57,712 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 01:26:57,712 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 01:26:57,713 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 01:26:57,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 01:26:57,716 INFO L85 PathProgramCache]: Analyzing trace with hash 689891435, now seen corresponding path program 1 times [2023-02-17 01:26:57,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 01:26:57,721 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667233891] [2023-02-17 01:26:57,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 01:26:57,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 01:26:57,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 01:26:57,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 01:26:57,795 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667233891] [2023-02-17 01:26:57,795 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-02-17 01:26:57,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [731562714] [2023-02-17 01:26:57,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 01:26:57,796 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 01:26:57,796 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 01:26:57,799 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 01:26:57,821 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 01:26:57,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 01:26:57,860 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 1 conjunts are in the unsatisfiable core [2023-02-17 01:26:57,863 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 01:26:57,877 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-17 01:26:57,877 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-17 01:26:57,877 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [731562714] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 01:26:57,878 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 01:26:57,878 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-17 01:26:57,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342350265] [2023-02-17 01:26:57,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 01:26:57,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-02-17 01:26:57,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 01:26:57,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-02-17 01:26:57,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-17 01:26:57,900 INFO L87 Difference]: Start difference. First operand has 27 states, 19 states have (on average 1.368421052631579) internal successors, (26), 20 states have internal predecessors, (26), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-17 01:26:57,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 01:26:57,924 INFO L93 Difference]: Finished difference Result 51 states and 68 transitions. [2023-02-17 01:26:57,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-02-17 01:26:57,942 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 19 [2023-02-17 01:26:57,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 01:26:57,946 INFO L225 Difference]: With dead ends: 51 [2023-02-17 01:26:57,947 INFO L226 Difference]: Without dead ends: 23 [2023-02-17 01:26:57,949 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 18 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 01:26:57,951 INFO L413 NwaCegarLoop]: 30 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, 30 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 01:26:57,951 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 01:26:57,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2023-02-17 01:26:57,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2023-02-17 01:26:57,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 16 states have (on average 1.1875) internal successors, (19), 17 states have internal predecessors, (19), 4 states have call successors, (4), 2 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 01:26:57,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2023-02-17 01:26:57,980 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 19 [2023-02-17 01:26:57,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 01:26:57,980 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2023-02-17 01:26:57,981 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-17 01:26:57,981 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2023-02-17 01:26:57,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-02-17 01:26:57,983 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 01:26:57,983 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 01:26:58,003 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-02-17 01:26:58,188 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 01:26:58,189 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 01:26:58,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 01:26:58,191 INFO L85 PathProgramCache]: Analyzing trace with hash 90086127, now seen corresponding path program 1 times [2023-02-17 01:26:58,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 01:26:58,191 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176586746] [2023-02-17 01:26:58,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 01:26:58,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 01:26:58,217 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-17 01:26:58,233 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [687633610] [2023-02-17 01:26:58,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 01:26:58,233 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 01:26:58,233 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 01:26:58,234 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 01:26:58,246 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 01:26:58,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 01:26:58,306 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 16 conjunts are in the unsatisfiable core [2023-02-17 01:26:58,308 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 01:26:58,357 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-17 01:26:58,358 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-17 01:26:58,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 01:26:58,359 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176586746] [2023-02-17 01:26:58,359 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-17 01:26:58,360 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [687633610] [2023-02-17 01:26:58,360 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [687633610] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 01:26:58,360 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 01:26:58,360 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-02-17 01:26:58,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084492995] [2023-02-17 01:26:58,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 01:26:58,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-17 01:26:58,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 01:26:58,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-17 01:26:58,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-02-17 01:26:58,364 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-02-17 01:26:58,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 01:26:58,484 INFO L93 Difference]: Finished difference Result 35 states and 40 transitions. [2023-02-17 01:26:58,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-17 01:26:58,485 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 19 [2023-02-17 01:26:58,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 01:26:58,488 INFO L225 Difference]: With dead ends: 35 [2023-02-17 01:26:58,489 INFO L226 Difference]: Without dead ends: 31 [2023-02-17 01:26:58,489 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-02-17 01:26:58,490 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 11 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-17 01:26:58,491 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 71 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-17 01:26:58,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2023-02-17 01:26:58,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 30. [2023-02-17 01:26:58,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 21 states have (on average 1.1428571428571428) internal successors, (24), 22 states have internal predecessors, (24), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-02-17 01:26:58,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2023-02-17 01:26:58,497 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 19 [2023-02-17 01:26:58,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 01:26:58,498 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2023-02-17 01:26:58,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-02-17 01:26:58,498 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2023-02-17 01:26:58,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-02-17 01:26:58,498 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 01:26:58,499 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 01:26:58,512 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 01:26:58,703 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 01:26:58,703 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 01:26:58,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 01:26:58,704 INFO L85 PathProgramCache]: Analyzing trace with hash -1522625704, now seen corresponding path program 1 times [2023-02-17 01:26:58,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 01:26:58,704 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718313996] [2023-02-17 01:26:58,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 01:26:58,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 01:26:58,713 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-17 01:26:58,713 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1819455697] [2023-02-17 01:26:58,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 01:26:58,714 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 01:26:58,714 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 01:26:58,729 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 01:26:58,731 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 01:26:58,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 01:26:58,781 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 32 conjunts are in the unsatisfiable core [2023-02-17 01:26:58,783 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 01:26:59,033 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-17 01:26:59,033 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 01:26:59,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 01:26:59,228 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718313996] [2023-02-17 01:26:59,228 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-17 01:26:59,228 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1819455697] [2023-02-17 01:26:59,228 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1819455697] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 01:26:59,229 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-02-17 01:26:59,229 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2023-02-17 01:26:59,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604160647] [2023-02-17 01:26:59,229 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-02-17 01:26:59,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-02-17 01:26:59,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 01:26:59,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-02-17 01:26:59,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=254, Unknown=0, NotChecked=0, Total=306 [2023-02-17 01:26:59,232 INFO L87 Difference]: Start difference. First operand 30 states and 33 transitions. Second operand has 13 states, 12 states have (on average 1.5) internal successors, (18), 11 states have internal predecessors, (18), 4 states have call successors, (4), 2 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 01:26:59,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 01:26:59,387 INFO L93 Difference]: Finished difference Result 57 states and 66 transitions. [2023-02-17 01:26:59,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-02-17 01:26:59,387 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 1.5) internal successors, (18), 11 states have internal predecessors, (18), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 28 [2023-02-17 01:26:59,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 01:26:59,388 INFO L225 Difference]: With dead ends: 57 [2023-02-17 01:26:59,388 INFO L226 Difference]: Without dead ends: 31 [2023-02-17 01:26:59,389 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=80, Invalid=382, Unknown=0, NotChecked=0, Total=462 [2023-02-17 01:26:59,390 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 26 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 235 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-17 01:26:59,390 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 107 Invalid, 241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 235 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-17 01:26:59,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2023-02-17 01:26:59,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2023-02-17 01:26:59,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 23 states have internal predecessors, (25), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-02-17 01:26:59,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 34 transitions. [2023-02-17 01:26:59,394 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 34 transitions. Word has length 28 [2023-02-17 01:26:59,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 01:26:59,394 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 34 transitions. [2023-02-17 01:26:59,394 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 1.5) internal successors, (18), 11 states have internal predecessors, (18), 4 states have call successors, (4), 2 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 01:26:59,394 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 34 transitions. [2023-02-17 01:26:59,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-02-17 01:26:59,395 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 01:26:59,395 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 01:26:59,405 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 01:26:59,599 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 01:26:59,600 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 01:26:59,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 01:26:59,601 INFO L85 PathProgramCache]: Analyzing trace with hash 252381658, now seen corresponding path program 1 times [2023-02-17 01:26:59,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 01:26:59,601 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864326934] [2023-02-17 01:26:59,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 01:26:59,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 01:26:59,609 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-17 01:26:59,609 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [405934827] [2023-02-17 01:26:59,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 01:26:59,610 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 01:26:59,610 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 01:26:59,611 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-17 01:26:59,613 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-02-17 01:26:59,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 01:26:59,654 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 39 conjunts are in the unsatisfiable core [2023-02-17 01:26:59,655 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 01:26:59,806 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-17 01:26:59,806 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 01:26:59,975 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-17 01:26:59,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 01:26:59,976 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864326934] [2023-02-17 01:26:59,976 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-17 01:26:59,976 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [405934827] [2023-02-17 01:26:59,976 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [405934827] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 01:26:59,976 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-17 01:26:59,976 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11] total 22 [2023-02-17 01:26:59,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200950420] [2023-02-17 01:26:59,976 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-17 01:26:59,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-02-17 01:26:59,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 01:26:59,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-02-17 01:26:59,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=391, Unknown=0, NotChecked=0, Total=462 [2023-02-17 01:26:59,978 INFO L87 Difference]: Start difference. First operand 31 states and 34 transitions. Second operand has 22 states, 20 states have (on average 1.6) internal successors, (32), 19 states have internal predecessors, (32), 6 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2023-02-17 01:27:00,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 01:27:00,195 INFO L93 Difference]: Finished difference Result 55 states and 63 transitions. [2023-02-17 01:27:00,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-02-17 01:27:00,196 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 20 states have (on average 1.6) internal successors, (32), 19 states have internal predecessors, (32), 6 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) Word has length 28 [2023-02-17 01:27:00,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 01:27:00,200 INFO L225 Difference]: With dead ends: 55 [2023-02-17 01:27:00,200 INFO L226 Difference]: Without dead ends: 40 [2023-02-17 01:27:00,201 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 32 SyntacticMatches, 2 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=141, Invalid=729, Unknown=0, NotChecked=0, Total=870 [2023-02-17 01:27:00,205 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 51 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 267 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-17 01:27:00,206 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 79 Invalid, 284 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 267 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-17 01:27:00,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2023-02-17 01:27:00,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 38. [2023-02-17 01:27:00,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 28 states have (on average 1.1071428571428572) internal successors, (31), 28 states have internal predecessors, (31), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-02-17 01:27:00,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 42 transitions. [2023-02-17 01:27:00,215 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 42 transitions. Word has length 28 [2023-02-17 01:27:00,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 01:27:00,215 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 42 transitions. [2023-02-17 01:27:00,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 20 states have (on average 1.6) internal successors, (32), 19 states have internal predecessors, (32), 6 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2023-02-17 01:27:00,216 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 42 transitions. [2023-02-17 01:27:00,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-02-17 01:27:00,216 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 01:27:00,216 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 01:27:00,224 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-02-17 01:27:00,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 01:27:00,422 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 01:27:00,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 01:27:00,422 INFO L85 PathProgramCache]: Analyzing trace with hash 1035193378, now seen corresponding path program 1 times [2023-02-17 01:27:00,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 01:27:00,423 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189841874] [2023-02-17 01:27:00,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 01:27:00,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 01:27:00,432 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-17 01:27:00,432 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [540415553] [2023-02-17 01:27:00,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 01:27:00,433 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 01:27:00,433 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 01:27:00,439 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-17 01:27:00,460 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-02-17 01:27:00,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 01:27:00,544 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 34 conjunts are in the unsatisfiable core [2023-02-17 01:27:00,552 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 01:27:00,645 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-17 01:27:00,646 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 01:27:00,818 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-02-17 01:27:00,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 01:27:00,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189841874] [2023-02-17 01:27:00,819 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-17 01:27:00,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [540415553] [2023-02-17 01:27:00,819 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [540415553] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 01:27:00,820 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-17 01:27:00,820 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 12] total 25 [2023-02-17 01:27:00,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166710326] [2023-02-17 01:27:00,820 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-17 01:27:00,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-02-17 01:27:00,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 01:27:00,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-02-17 01:27:00,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=516, Unknown=0, NotChecked=0, Total=600 [2023-02-17 01:27:00,822 INFO L87 Difference]: Start difference. First operand 38 states and 42 transitions. Second operand has 25 states, 21 states have (on average 1.8571428571428572) internal successors, (39), 22 states have internal predecessors, (39), 7 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) [2023-02-17 01:27:01,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 01:27:01,435 INFO L93 Difference]: Finished difference Result 40 states and 44 transitions. [2023-02-17 01:27:01,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-02-17 01:27:01,436 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 21 states have (on average 1.8571428571428572) internal successors, (39), 22 states have internal predecessors, (39), 7 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) Word has length 35 [2023-02-17 01:27:01,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 01:27:01,436 INFO L225 Difference]: With dead ends: 40 [2023-02-17 01:27:01,436 INFO L226 Difference]: Without dead ends: 0 [2023-02-17 01:27:01,437 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 44 SyntacticMatches, 2 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 313 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=253, Invalid=1307, Unknown=0, NotChecked=0, Total=1560 [2023-02-17 01:27:01,437 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 47 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 323 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 323 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-02-17 01:27:01,437 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 96 Invalid, 349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 323 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-02-17 01:27:01,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-02-17 01:27:01,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-02-17 01:27:01,438 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 01:27:01,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-02-17 01:27:01,438 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 35 [2023-02-17 01:27:01,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 01:27:01,438 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-02-17 01:27:01,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 21 states have (on average 1.8571428571428572) internal successors, (39), 22 states have internal predecessors, (39), 7 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) [2023-02-17 01:27:01,438 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-02-17 01:27:01,438 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-02-17 01:27:01,440 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-02-17 01:27:01,463 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-02-17 01:27:01,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 01:27:01,650 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-02-17 01:27:01,659 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-02-17 01:27:01,659 INFO L895 garLoopResultBuilder]: At program point L27(line 27) the Hoare annotation is: (and (>= |ULTIMATE.start_main_~X~0#1| 0) (<= |ULTIMATE.start_main_~X~0#1| 1)) [2023-02-17 01:27:01,659 INFO L899 garLoopResultBuilder]: For program point L27-1(line 27) no Hoare annotation was computed. [2023-02-17 01:27:01,659 INFO L902 garLoopResultBuilder]: At program point L25(line 25) the Hoare annotation is: true [2023-02-17 01:27:01,659 INFO L899 garLoopResultBuilder]: For program point L25-1(line 25) no Hoare annotation was computed. [2023-02-17 01:27:01,663 INFO L895 garLoopResultBuilder]: At program point L50(line 50) the Hoare annotation is: (let ((.cse12 (* |ULTIMATE.start_main_~X~0#1| |ULTIMATE.start_main_~y~0#1|))) (let ((.cse7 (* (* |ULTIMATE.start_main_~Y~0#1| |ULTIMATE.start_main_~x~0#1|) 2)) (.cse20 (- (* .cse12 2))) (.cse4 (- |ULTIMATE.start_main_~v~0#1|)) (.cse5 (- |ULTIMATE.start_main_~X~0#1|)) (.cse6 (* 2 |ULTIMATE.start_main_~Y~0#1|))) (let ((.cse13 (+ .cse5 .cse6)) (.cse21 (= (+ (- 1) |ULTIMATE.start_main_~y~0#1|) 0)) (.cse0 (>= |ULTIMATE.start_main_~X~0#1| 0)) (.cse16 (<= |ULTIMATE.start_main_~Y~0#1| 1)) (.cse2 (<= |ULTIMATE.start_main_~X~0#1| 1)) (.cse22 (= (+ (+ (+ (+ .cse7 .cse20) .cse5) .cse6) .cse4) 0)) (.cse17 (>= |ULTIMATE.start_main_~Y~0#1| 0))) (let ((.cse14 (= |ULTIMATE.start_main_~y~0#1| 0)) (.cse15 (= |ULTIMATE.start_main_~xy~0#1| (* |ULTIMATE.start_main_~X~0#1| 0))) (.cse1 (or (let ((.cse23 (+ (* (- 2) |ULTIMATE.start_main_~Y~0#1|) |ULTIMATE.start_main_~v~0#1| (* 2 |ULTIMATE.start_main_~X~0#1|)))) (and .cse0 .cse16 (= (+ (- 1) |ULTIMATE.start_main_~x~0#1|) 0) .cse2 (= .cse13 .cse23) .cse21 (not (< .cse23 0)) .cse17)) (and .cse0 .cse16 .cse2 .cse22 .cse17))) (.cse9 (<= |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~X~0#1|))) (or (let ((.cse3 (* 2 |ULTIMATE.start_main_~y~0#1|)) (.cse8 (- (* 2 (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|))))) (and .cse0 .cse1 .cse2 (= (+ .cse3 (+ .cse4 (+ (+ .cse5 (+ (* 2 |ULTIMATE.start_main_~yx~0#1|) (- (* 2 |ULTIMATE.start_main_~xy~0#1|)))) .cse6))) 0) (= (+ .cse3 (+ (+ (+ .cse5 (+ .cse7 .cse8)) .cse6) .cse4)) 0) (or .cse9 (forall ((|ULTIMATE.start_main_~Y~0#1| Int)) (= (+ .cse3 (let ((.cse11 (* 2 |ULTIMATE.start_main_~Y~0#1|)) (.cse10 (* (* |ULTIMATE.start_main_~Y~0#1| |ULTIMATE.start_main_~x~0#1|) 2))) (+ (+ (+ .cse5 (+ .cse10 .cse8)) .cse11) (+ (- (* (- 1) |ULTIMATE.start_main_~X~0#1|)) (- (* (- 2) .cse12)) (- .cse11) (- .cse10))))) 0))))) (and (= |ULTIMATE.start_main_~v~0#1| .cse13) .cse14 (= |ULTIMATE.start_main_~yx~0#1| (* |ULTIMATE.start_main_~Y~0#1| 0)) (= |ULTIMATE.start_main_~x~0#1| 0) .cse15) (and .cse0 .cse16 (= (+ .cse13 .cse6) |ULTIMATE.start_main_~v~0#1|) .cse2 .cse14 (exists ((|ULTIMATE.start_main_~x~0#1| Int)) (= (* |ULTIMATE.start_main_~Y~0#1| |ULTIMATE.start_main_~x~0#1|) |ULTIMATE.start_main_~yx~0#1|)) (< .cse13 0) .cse17 .cse15) (let ((.cse18 (+ 0 1))) (let ((.cse19 (* |ULTIMATE.start_main_~Y~0#1| .cse18))) (and (not (<= .cse18 |ULTIMATE.start_main_~X~0#1|)) .cse0 (= |ULTIMATE.start_main_~x~0#1| .cse18) (= (+ .cse4 (+ .cse6 (+ (+ (* 2 .cse19) .cse20) .cse5))) 0) .cse1 (= |ULTIMATE.start_main_~xy~0#1| (* |ULTIMATE.start_main_~y~0#1| .cse18)) .cse2 (= |ULTIMATE.start_main_~yx~0#1| .cse19) .cse21 .cse22 (not .cse9))))))))) [2023-02-17 01:27:01,663 INFO L899 garLoopResultBuilder]: For program point L50-1(line 50) no Hoare annotation was computed. [2023-02-17 01:27:01,663 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-02-17 01:27:01,664 INFO L902 garLoopResultBuilder]: At program point main_returnLabel#1(lines 21 53) the Hoare annotation is: true [2023-02-17 01:27:01,664 INFO L899 garLoopResultBuilder]: For program point L40(lines 40 45) no Hoare annotation was computed. [2023-02-17 01:27:01,664 INFO L899 garLoopResultBuilder]: For program point L40-2(lines 40 45) no Hoare annotation was computed. [2023-02-17 01:27:01,664 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2023-02-17 01:27:01,664 INFO L895 garLoopResultBuilder]: At program point L32-2(lines 32 47) the Hoare annotation is: (let ((.cse6 (- |ULTIMATE.start_main_~X~0#1|)) (.cse9 (* 2 |ULTIMATE.start_main_~Y~0#1|))) (let ((.cse1 (+ .cse6 .cse9))) (let ((.cse7 (* (* |ULTIMATE.start_main_~Y~0#1| |ULTIMATE.start_main_~x~0#1|) 2)) (.cse10 (- |ULTIMATE.start_main_~v~0#1|)) (.cse5 (* 2 |ULTIMATE.start_main_~y~0#1|)) (.cse8 (- (* 2 (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|)))) (.cse0 (>= |ULTIMATE.start_main_~X~0#1| 0)) (.cse2 (<= |ULTIMATE.start_main_~Y~0#1| 1)) (.cse12 (= (+ .cse1 .cse9) |ULTIMATE.start_main_~v~0#1|)) (.cse3 (<= |ULTIMATE.start_main_~X~0#1| 1)) (.cse4 (= |ULTIMATE.start_main_~y~0#1| 0)) (.cse13 (< .cse1 0)) (.cse11 (>= |ULTIMATE.start_main_~Y~0#1| 0))) (or (and .cse0 (= |ULTIMATE.start_main_~v~0#1| .cse1) .cse2 .cse3 .cse4 (= |ULTIMATE.start_main_~x~0#1| 0) (= (+ .cse5 (+ (+ (+ .cse6 (+ .cse7 .cse8)) .cse9) .cse10)) 0) .cse11) (and .cse0 .cse2 .cse12 .cse3 .cse4 .cse13 .cse11) (let ((.cse14 (* |ULTIMATE.start_main_~X~0#1| |ULTIMATE.start_main_~y~0#1|))) (and .cse0 .cse2 .cse3 (= (+ (+ (+ (+ .cse7 (- (* .cse14 2))) .cse6) .cse9) .cse10) 0) .cse11 (or (<= |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~X~0#1|) (forall ((|ULTIMATE.start_main_~Y~0#1| Int)) (= (+ .cse5 (let ((.cse16 (* 2 |ULTIMATE.start_main_~Y~0#1|)) (.cse15 (* (* |ULTIMATE.start_main_~Y~0#1| |ULTIMATE.start_main_~x~0#1|) 2))) (+ (+ (+ .cse6 (+ .cse15 .cse8)) .cse16) (+ (- (* (- 1) |ULTIMATE.start_main_~X~0#1|)) (- (* (- 2) .cse14)) (- .cse16) (- .cse15))))) 0))))) (let ((.cse17 (+ (* (- 2) |ULTIMATE.start_main_~Y~0#1|) |ULTIMATE.start_main_~v~0#1| (* 2 |ULTIMATE.start_main_~X~0#1|)))) (and .cse0 (= |ULTIMATE.start_main_~x~0#1| (+ 0 1)) .cse2 (= (+ (- 1) |ULTIMATE.start_main_~x~0#1|) 0) .cse3 (= .cse1 .cse17) (= (+ (- 1) |ULTIMATE.start_main_~y~0#1|) 0) (not (< .cse17 0)) .cse11)) (and .cse0 .cse2 .cse12 .cse3 .cse4 (exists ((|ULTIMATE.start_main_~x~0#1| Int)) (= (* |ULTIMATE.start_main_~Y~0#1| |ULTIMATE.start_main_~x~0#1|) |ULTIMATE.start_main_~yx~0#1|)) .cse13 .cse11 (= |ULTIMATE.start_main_~xy~0#1| (* |ULTIMATE.start_main_~X~0#1| 0))))))) [2023-02-17 01:27:01,664 INFO L899 garLoopResultBuilder]: For program point L32-3(lines 32 47) no Hoare annotation was computed. [2023-02-17 01:27:01,665 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2023-02-17 01:27:01,665 INFO L895 garLoopResultBuilder]: At program point L35(line 35) the Hoare annotation is: (let ((.cse23 (* |ULTIMATE.start_main_~Y~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse9 (- |ULTIMATE.start_main_~v~0#1|)) (.cse18 (- |ULTIMATE.start_main_~X~0#1|)) (.cse15 (* 2 |ULTIMATE.start_main_~yx~0#1|)) (.cse12 (* 2 |ULTIMATE.start_main_~Y~0#1|))) (let ((.cse7 (+ .cse9 (+ (+ .cse18 (+ .cse15 (- (* 2 |ULTIMATE.start_main_~xy~0#1|)))) .cse12))) (.cse16 (* .cse23 2)) (.cse20 (- (* 2 (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|))))) (let ((.cse5 (= |ULTIMATE.start_main_~y~0#1| 0)) (.cse11 (= |ULTIMATE.start_main_~xy~0#1| (* |ULTIMATE.start_main_~X~0#1| 0))) (.cse8 (+ (+ .cse18 (+ .cse16 .cse20)) .cse12)) (.cse3 (= .cse7 0)) (.cse6 (* 2 |ULTIMATE.start_main_~y~0#1|)) (.cse17 (* |ULTIMATE.start_main_~X~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse0 (>= |ULTIMATE.start_main_~X~0#1| 0)) (.cse2 (<= |ULTIMATE.start_main_~Y~0#1| 1)) (.cse4 (<= |ULTIMATE.start_main_~X~0#1| 1)) (.cse1 (+ .cse18 .cse12)) (.cse10 (>= |ULTIMATE.start_main_~Y~0#1| 0))) (or (and .cse0 (= |ULTIMATE.start_main_~v~0#1| .cse1) .cse2 .cse3 .cse4 .cse5 (= |ULTIMATE.start_main_~yx~0#1| (* |ULTIMATE.start_main_~Y~0#1| 0)) (= (+ .cse6 .cse7) 0) (= |ULTIMATE.start_main_~x~0#1| 0) (= (+ .cse6 (+ .cse8 .cse9)) 0) .cse10 .cse11) (and .cse0 .cse2 (= (+ .cse1 .cse12) |ULTIMATE.start_main_~v~0#1|) .cse4 .cse5 (exists ((|ULTIMATE.start_main_~x~0#1| Int)) (= (* |ULTIMATE.start_main_~Y~0#1| |ULTIMATE.start_main_~x~0#1|) |ULTIMATE.start_main_~yx~0#1|)) (< .cse1 0) .cse10 .cse11) (let ((.cse13 (<= |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~X~0#1|)) (.cse14 (- (* (- 1) |ULTIMATE.start_main_~X~0#1|)))) (and (or .cse13 (= (+ .cse6 (+ (+ (- (* (- 2) |ULTIMATE.start_main_~xy~0#1|)) .cse14 (- .cse12) (- .cse15)) .cse8)) 0)) .cse0 .cse2 .cse3 .cse4 (= (+ (+ (+ (+ .cse16 (- (* .cse17 2))) .cse18) .cse12) .cse9) 0) .cse10 (or .cse13 (forall ((|ULTIMATE.start_main_~Y~0#1| Int)) (= (+ .cse6 (let ((.cse21 (* 2 |ULTIMATE.start_main_~Y~0#1|)) (.cse19 (* (* |ULTIMATE.start_main_~Y~0#1| |ULTIMATE.start_main_~x~0#1|) 2))) (+ (+ (+ .cse18 (+ .cse19 .cse20)) .cse21) (+ .cse14 (- (* (- 2) .cse17)) (- .cse21) (- .cse19))))) 0))))) (let ((.cse22 (+ (* (- 2) |ULTIMATE.start_main_~Y~0#1|) |ULTIMATE.start_main_~v~0#1| (* 2 |ULTIMATE.start_main_~X~0#1|)))) (and (= (* |ULTIMATE.start_main_~Y~0#1| 1) |ULTIMATE.start_main_~yx~0#1|) (= .cse17 |ULTIMATE.start_main_~xy~0#1|) .cse0 (= |ULTIMATE.start_main_~x~0#1| (+ 0 1)) .cse2 (= (+ (- 1) |ULTIMATE.start_main_~x~0#1|) 0) .cse4 (= .cse1 .cse22) (= (+ (- 1) |ULTIMATE.start_main_~y~0#1|) 0) (= |ULTIMATE.start_main_~xy~0#1| (* |ULTIMATE.start_main_~X~0#1| 1)) (not (< .cse22 0)) .cse10 (= .cse23 |ULTIMATE.start_main_~yx~0#1|))))))) [2023-02-17 01:27:01,665 INFO L899 garLoopResultBuilder]: For program point L35-1(lines 32 47) no Hoare annotation was computed. [2023-02-17 01:27:01,665 INFO L899 garLoopResultBuilder]: For program point L11(line 11) no Hoare annotation was computed. [2023-02-17 01:27:01,665 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 10 12) the Hoare annotation is: true [2023-02-17 01:27:01,665 INFO L899 garLoopResultBuilder]: For program point L11-2(lines 10 12) no Hoare annotation was computed. [2023-02-17 01:27:01,665 INFO L899 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 10 12) no Hoare annotation was computed. [2023-02-17 01:27:01,666 INFO L899 garLoopResultBuilder]: For program point L15(lines 15 16) no Hoare annotation was computed. [2023-02-17 01:27:01,666 INFO L899 garLoopResultBuilder]: For program point L14(lines 14 17) no Hoare annotation was computed. [2023-02-17 01:27:01,666 INFO L899 garLoopResultBuilder]: For program point L14-2(lines 13 19) no Hoare annotation was computed. [2023-02-17 01:27:01,666 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 13 19) no Hoare annotation was computed. [2023-02-17 01:27:01,666 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 13 19) the Hoare annotation is: true [2023-02-17 01:27:01,666 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 16) no Hoare annotation was computed. [2023-02-17 01:27:01,669 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2023-02-17 01:27:01,671 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-02-17 01:27:01,677 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~Y~0#1,QUANTIFIED] [2023-02-17 01:27:01,677 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~Y~0#1,QUANTIFIED] [2023-02-17 01:27:01,677 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~Y~0#1,QUANTIFIED] [2023-02-17 01:27:01,678 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~Y~0#1,QUANTIFIED] [2023-02-17 01:27:01,679 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~x~0#1,QUANTIFIED] [2023-02-17 01:27:01,690 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~Y~0#1,QUANTIFIED] [2023-02-17 01:27:01,691 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~Y~0#1,QUANTIFIED] [2023-02-17 01:27:01,691 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~Y~0#1,QUANTIFIED] [2023-02-17 01:27:01,691 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~Y~0#1,QUANTIFIED] [2023-02-17 01:27:01,691 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~x~0#1,QUANTIFIED] [2023-02-17 01:27:01,695 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.02 01:27:01 BoogieIcfgContainer [2023-02-17 01:27:01,696 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-02-17 01:27:01,697 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-02-17 01:27:01,697 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-02-17 01:27:01,698 INFO L275 PluginConnector]: Witness Printer initialized [2023-02-17 01:27:01,698 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 01:26:57" (3/4) ... [2023-02-17 01:27:01,700 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-02-17 01:27:01,704 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2023-02-17 01:27:01,704 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2023-02-17 01:27:01,707 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2023-02-17 01:27:01,707 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2023-02-17 01:27:01,709 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-02-17 01:27:01,709 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-02-17 01:27:01,725 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((((((X >= 0 && v == -X + 2 * Y) && Y <= 1) && X <= 1) && y == 0) && x == 0) && 2 * y + (-X + (Y * x * 2 + -(2 * (x * y))) + 2 * Y + -v) == 0) && Y >= 0) || ((((((X >= 0 && Y <= 1) && -X + 2 * Y + 2 * Y == v) && X <= 1) && y == 0) && -X + 2 * Y < 0) && Y >= 0)) || (((((X >= 0 && Y <= 1) && X <= 1) && Y * x * 2 + -(X * y * 2) + -X + 2 * Y + -v == 0) && Y >= 0) && (x <= X || (forall ULTIMATE.start_main_~Y~0#1 : int :: 2 * y + (-X + (ULTIMATE.start_main_~Y~0#1 * x * 2 + -(2 * (x * y))) + 2 * ULTIMATE.start_main_~Y~0#1 + (-(-1 * X) + -(-2 * (X * y)) + -(2 * ULTIMATE.start_main_~Y~0#1) + -(ULTIMATE.start_main_~Y~0#1 * x * 2))) == 0)))) || ((((((((X >= 0 && x == 0 + 1) && Y <= 1) && -1 + x == 0) && X <= 1) && -X + 2 * Y == -2 * Y + v + 2 * X) && -1 + y == 0) && !(-2 * Y + v + 2 * X < 0)) && Y >= 0)) || ((((((((X >= 0 && Y <= 1) && -X + 2 * Y + 2 * Y == v) && X <= 1) && y == 0) && (\exists ULTIMATE.start_main_~x~0#1 : int :: Y * ULTIMATE.start_main_~x~0#1 == yx)) && -X + 2 * Y < 0) && Y >= 0) && xy == X * 0) [2023-02-17 01:27:01,733 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-02-17 01:27:01,733 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-02-17 01:27:01,734 INFO L158 Benchmark]: Toolchain (without parser) took 4483.49ms. Allocated memory was 134.2MB in the beginning and 184.5MB in the end (delta: 50.3MB). Free memory was 103.4MB in the beginning and 117.8MB in the end (delta: -14.4MB). Peak memory consumption was 36.0MB. Max. memory is 16.1GB. [2023-02-17 01:27:01,734 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 111.1MB. Free memory was 63.3MB in the beginning and 63.1MB in the end (delta: 188.8kB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-17 01:27:01,734 INFO L158 Benchmark]: CACSL2BoogieTranslator took 143.52ms. Allocated memory is still 134.2MB. Free memory was 102.9MB in the beginning and 92.5MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-02-17 01:27:01,734 INFO L158 Benchmark]: Boogie Procedure Inliner took 18.64ms. Allocated memory is still 134.2MB. Free memory was 92.5MB in the beginning and 91.0MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-17 01:27:01,735 INFO L158 Benchmark]: Boogie Preprocessor took 11.84ms. Allocated memory is still 134.2MB. Free memory was 91.0MB in the beginning and 90.0MB in the end (delta: 985.3kB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-17 01:27:01,738 INFO L158 Benchmark]: RCFGBuilder took 229.37ms. Allocated memory is still 134.2MB. Free memory was 90.0MB in the beginning and 79.5MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-02-17 01:27:01,739 INFO L158 Benchmark]: TraceAbstraction took 4038.67ms. Allocated memory was 134.2MB in the beginning and 184.5MB in the end (delta: 50.3MB). Free memory was 78.9MB in the beginning and 121.0MB in the end (delta: -42.1MB). Peak memory consumption was 8.8MB. Max. memory is 16.1GB. [2023-02-17 01:27:01,739 INFO L158 Benchmark]: Witness Printer took 35.98ms. Allocated memory is still 184.5MB. Free memory was 119.9MB in the beginning and 117.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-17 01:27:01,741 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 111.1MB. Free memory was 63.3MB in the beginning and 63.1MB in the end (delta: 188.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 143.52ms. Allocated memory is still 134.2MB. Free memory was 102.9MB in the beginning and 92.5MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 18.64ms. Allocated memory is still 134.2MB. Free memory was 92.5MB in the beginning and 91.0MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 11.84ms. Allocated memory is still 134.2MB. Free memory was 91.0MB in the beginning and 90.0MB in the end (delta: 985.3kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 229.37ms. Allocated memory is still 134.2MB. Free memory was 90.0MB in the beginning and 79.5MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 4038.67ms. Allocated memory was 134.2MB in the beginning and 184.5MB in the end (delta: 50.3MB). Free memory was 78.9MB in the beginning and 121.0MB in the end (delta: -42.1MB). Peak memory consumption was 8.8MB. Max. memory is 16.1GB. * Witness Printer took 35.98ms. Allocated memory is still 184.5MB. Free memory was 119.9MB in the beginning and 117.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. 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_~x~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_~x~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 3 procedures, 27 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 4.0s, OverallIterations: 5, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 137 SdHoareTripleChecker+Valid, 0.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 135 mSDsluCounter, 383 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 296 mSDsCounter, 53 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 886 IncrementalHoareTripleChecker+Invalid, 939 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 53 mSolverCounterUnsat, 87 mSDtfsCounter, 886 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 224 GetRequests, 127 SyntacticMatches, 5 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 517 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=38occurred in iteration=4, InterpolantAutomatonStates: 63, 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, 3 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 23 PreInvPairs, 38 NumberOfFragments, 1129 HoareAnnotationTreeSize, 23 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 148 NumberOfCodeBlocks, 148 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 185 ConstructedInterpolants, 4 QuantifiedInterpolants, 1670 SizeOfPredicates, 33 NumberOfNonLiveVariables, 415 ConjunctsInSsa, 122 ConjunctsInUnsatCore, 7 InterpolantComputations, 2 PerfectInterpolantSequences, 47/62 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: 32]: Loop Invariant [2023-02-17 01:27:01,757 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~Y~0#1,QUANTIFIED] [2023-02-17 01:27:01,758 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~Y~0#1,QUANTIFIED] [2023-02-17 01:27:01,758 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~Y~0#1,QUANTIFIED] [2023-02-17 01:27:01,758 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~Y~0#1,QUANTIFIED] [2023-02-17 01:27:01,758 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~x~0#1,QUANTIFIED] [2023-02-17 01:27:01,759 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~Y~0#1,QUANTIFIED] [2023-02-17 01:27:01,760 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~Y~0#1,QUANTIFIED] [2023-02-17 01:27:01,760 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~Y~0#1,QUANTIFIED] [2023-02-17 01:27:01,760 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~Y~0#1,QUANTIFIED] [2023-02-17 01:27:01,760 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~x~0#1,QUANTIFIED] Derived loop invariant: ((((((((((X >= 0 && v == -X + 2 * Y) && Y <= 1) && X <= 1) && y == 0) && x == 0) && 2 * y + (-X + (Y * x * 2 + -(2 * (x * y))) + 2 * Y + -v) == 0) && Y >= 0) || ((((((X >= 0 && Y <= 1) && -X + 2 * Y + 2 * Y == v) && X <= 1) && y == 0) && -X + 2 * Y < 0) && Y >= 0)) || (((((X >= 0 && Y <= 1) && X <= 1) && Y * x * 2 + -(X * y * 2) + -X + 2 * Y + -v == 0) && Y >= 0) && (x <= X || (forall ULTIMATE.start_main_~Y~0#1 : int :: 2 * y + (-X + (ULTIMATE.start_main_~Y~0#1 * x * 2 + -(2 * (x * y))) + 2 * ULTIMATE.start_main_~Y~0#1 + (-(-1 * X) + -(-2 * (X * y)) + -(2 * ULTIMATE.start_main_~Y~0#1) + -(ULTIMATE.start_main_~Y~0#1 * x * 2))) == 0)))) || ((((((((X >= 0 && x == 0 + 1) && Y <= 1) && -1 + x == 0) && X <= 1) && -X + 2 * Y == -2 * Y + v + 2 * X) && -1 + y == 0) && !(-2 * Y + v + 2 * X < 0)) && Y >= 0)) || ((((((((X >= 0 && Y <= 1) && -X + 2 * Y + 2 * Y == v) && X <= 1) && y == 0) && (\exists ULTIMATE.start_main_~x~0#1 : int :: Y * ULTIMATE.start_main_~x~0#1 == yx)) && -X + 2 * Y < 0) && Y >= 0) && xy == X * 0) - InvariantResult [Line: 21]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2023-02-17 01:27:01,773 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