./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench/bresenham-ll.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5fbdf5bf Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/nla-digbench/bresenham-ll.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 97cdb6925f9f1d0ae1d065534d6539e78994cd41 ................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5fbdf5b [2021-08-29 11:48:24,942 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-29 11:48:24,943 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-29 11:48:24,974 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-29 11:48:24,975 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-29 11:48:24,978 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-29 11:48:24,979 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-29 11:48:24,984 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-29 11:48:24,986 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-29 11:48:24,989 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-29 11:48:24,990 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-29 11:48:24,993 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-29 11:48:24,993 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-29 11:48:24,995 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-29 11:48:24,996 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-29 11:48:24,998 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-29 11:48:24,998 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-29 11:48:24,999 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-29 11:48:25,002 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-29 11:48:25,007 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-29 11:48:25,008 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-29 11:48:25,009 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-29 11:48:25,010 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-29 11:48:25,011 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-29 11:48:25,015 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-29 11:48:25,016 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-29 11:48:25,016 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-29 11:48:25,017 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-29 11:48:25,017 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-29 11:48:25,018 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-29 11:48:25,018 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-29 11:48:25,018 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-29 11:48:25,020 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-29 11:48:25,020 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-29 11:48:25,021 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-29 11:48:25,021 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-29 11:48:25,022 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-29 11:48:25,022 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-29 11:48:25,022 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-29 11:48:25,023 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-29 11:48:25,023 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-29 11:48:25,024 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-08-29 11:48:25,058 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-29 11:48:25,058 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-29 11:48:25,059 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-29 11:48:25,059 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-29 11:48:25,060 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-29 11:48:25,060 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-29 11:48:25,060 INFO L138 SettingsManager]: * Use SBE=true [2021-08-29 11:48:25,060 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-29 11:48:25,061 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-29 11:48:25,061 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-29 11:48:25,061 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-29 11:48:25,061 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-29 11:48:25,061 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-29 11:48:25,061 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-29 11:48:25,061 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-29 11:48:25,062 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-29 11:48:25,062 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-29 11:48:25,062 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-29 11:48:25,062 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-29 11:48:25,062 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-29 11:48:25,062 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-29 11:48:25,062 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-29 11:48:25,062 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-29 11:48:25,062 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-29 11:48:25,062 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-29 11:48:25,062 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-29 11:48:25,063 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-29 11:48:25,063 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-29 11:48:25,063 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-29 11:48:25,063 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-29 11:48:25,063 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 97cdb6925f9f1d0ae1d065534d6539e78994cd41 [2021-08-29 11:48:25,344 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-29 11:48:25,363 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-29 11:48:25,365 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-29 11:48:25,366 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-29 11:48:25,366 INFO L275 PluginConnector]: CDTParser initialized [2021-08-29 11:48:25,367 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench/bresenham-ll.c [2021-08-29 11:48:25,424 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/51fd63d74/95f6082137864264ab70b3d5b9cb6272/FLAG48aa5344a [2021-08-29 11:48:25,883 INFO L306 CDTParser]: Found 1 translation units. [2021-08-29 11:48:25,884 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench/bresenham-ll.c [2021-08-29 11:48:25,890 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/51fd63d74/95f6082137864264ab70b3d5b9cb6272/FLAG48aa5344a [2021-08-29 11:48:26,266 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/51fd63d74/95f6082137864264ab70b3d5b9cb6272 [2021-08-29 11:48:26,268 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-29 11:48:26,290 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-29 11:48:26,291 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-29 11:48:26,291 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-29 11:48:26,295 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-29 11:48:26,295 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 11:48:26" (1/1) ... [2021-08-29 11:48:26,298 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64cbdf48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:48:26, skipping insertion in model container [2021-08-29 11:48:26,298 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 11:48:26" (1/1) ... [2021-08-29 11:48:26,302 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-29 11:48:26,312 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-29 11:48:26,400 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench/bresenham-ll.c[597,610] [2021-08-29 11:48:26,420 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-29 11:48:26,427 INFO L203 MainTranslator]: Completed pre-run [2021-08-29 11:48:26,452 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench/bresenham-ll.c[597,610] [2021-08-29 11:48:26,472 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-29 11:48:26,486 INFO L208 MainTranslator]: Completed translation [2021-08-29 11:48:26,486 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:48:26 WrapperNode [2021-08-29 11:48:26,487 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-29 11:48:26,488 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-29 11:48:26,488 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-29 11:48:26,488 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-29 11:48:26,493 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:48:26" (1/1) ... [2021-08-29 11:48:26,498 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:48:26" (1/1) ... [2021-08-29 11:48:26,513 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-29 11:48:26,514 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-29 11:48:26,514 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-29 11:48:26,514 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-29 11:48:26,519 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:48:26" (1/1) ... [2021-08-29 11:48:26,519 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:48:26" (1/1) ... [2021-08-29 11:48:26,526 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:48:26" (1/1) ... [2021-08-29 11:48:26,526 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:48:26" (1/1) ... [2021-08-29 11:48:26,534 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:48:26" (1/1) ... [2021-08-29 11:48:26,537 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:48:26" (1/1) ... [2021-08-29 11:48:26,537 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:48:26" (1/1) ... [2021-08-29 11:48:26,538 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-29 11:48:26,539 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-29 11:48:26,539 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-29 11:48:26,539 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-29 11:48:26,539 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:48:26" (1/1) ... [2021-08-29 11:48:26,544 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-29 11:48:26,552 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 11:48:26,561 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) [2021-08-29 11:48:26,588 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 [2021-08-29 11:48:26,598 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-29 11:48:26,599 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-29 11:48:26,599 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-29 11:48:26,599 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-29 11:48:26,736 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-29 11:48:26,736 INFO L299 CfgBuilder]: Removed 9 assume(true) statements. [2021-08-29 11:48:26,737 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 11:48:26 BoogieIcfgContainer [2021-08-29 11:48:26,737 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-29 11:48:26,738 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-29 11:48:26,738 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-29 11:48:26,740 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-29 11:48:26,740 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.08 11:48:26" (1/3) ... [2021-08-29 11:48:26,741 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@548d6dfd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 11:48:26, skipping insertion in model container [2021-08-29 11:48:26,741 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:48:26" (2/3) ... [2021-08-29 11:48:26,742 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@548d6dfd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 11:48:26, skipping insertion in model container [2021-08-29 11:48:26,742 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 11:48:26" (3/3) ... [2021-08-29 11:48:26,743 INFO L111 eAbstractionObserver]: Analyzing ICFG bresenham-ll.c [2021-08-29 11:48:26,748 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-29 11:48:26,748 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-08-29 11:48:26,783 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-29 11:48:26,789 INFO L339 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, mConcurrency=FINITE_AUTOMATA, 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, mLoopAccelerationTechnique=FAST_UPR [2021-08-29 11:48:26,789 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-08-29 11:48:26,798 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 16 states have internal predecessors, (22), 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) [2021-08-29 11:48:26,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-08-29 11:48:26,802 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 11:48:26,802 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-08-29 11:48:26,803 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 11:48:26,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 11:48:26,811 INFO L82 PathProgramCache]: Analyzing trace with hash 28699754, now seen corresponding path program 1 times [2021-08-29 11:48:26,816 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 11:48:26,817 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666118942] [2021-08-29 11:48:26,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 11:48:26,817 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 11:48:26,904 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-29 11:48:26,905 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1047614831] [2021-08-29 11:48:26,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 11:48:26,906 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 11:48:26,906 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 11:48:26,907 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) [2021-08-29 11:48:26,908 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-08-29 11:48:26,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 11:48:26,958 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 13 conjunts are in the unsatisfiable core [2021-08-29 11:48:26,961 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 11:48:27,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 11:48:27,112 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-08-29 11:48:27,112 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 11:48:27,113 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666118942] [2021-08-29 11:48:27,113 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-29 11:48:27,114 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1047614831] [2021-08-29 11:48:27,114 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1047614831] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 11:48:27,114 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 11:48:27,115 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-29 11:48:27,116 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350567981] [2021-08-29 11:48:27,120 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-29 11:48:27,121 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 11:48:27,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-29 11:48:27,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-29 11:48:27,146 INFO L87 Difference]: Start difference. First operand has 17 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 16 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 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) [2021-08-29 11:48:27,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 11:48:27,262 INFO L93 Difference]: Finished difference Result 44 states and 61 transitions. [2021-08-29 11:48:27,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-29 11:48:27,264 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-08-29 11:48:27,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 11:48:27,268 INFO L225 Difference]: With dead ends: 44 [2021-08-29 11:48:27,268 INFO L226 Difference]: Without dead ends: 19 [2021-08-29 11:48:27,270 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 25.92ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-29 11:48:27,272 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 16 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 47.32ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.31ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 79.98ms IncrementalHoareTripleChecker+Time [2021-08-29 11:48:27,273 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 0 Invalid, 59 Unknown, 0 Unchecked, 2.31ms Time], IncrementalHoareTripleChecker [5 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 79.98ms Time] [2021-08-29 11:48:27,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-08-29 11:48:27,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 16. [2021-08-29 11:48:27,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 15 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 11:48:27,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2021-08-29 11:48:27,296 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 5 [2021-08-29 11:48:27,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 11:48:27,297 INFO L470 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2021-08-29 11:48:27,297 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 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) [2021-08-29 11:48:27,297 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2021-08-29 11:48:27,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-08-29 11:48:27,298 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 11:48:27,298 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 11:48:27,321 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-08-29 11:48:27,513 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-08-29 11:48:27,513 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 11:48:27,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 11:48:27,514 INFO L82 PathProgramCache]: Analyzing trace with hash 1328986426, now seen corresponding path program 1 times [2021-08-29 11:48:27,514 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 11:48:27,514 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018621119] [2021-08-29 11:48:27,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 11:48:27,514 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 11:48:27,525 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-29 11:48:27,525 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [375004931] [2021-08-29 11:48:27,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 11:48:27,525 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 11:48:27,526 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 11:48:27,531 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) [2021-08-29 11:48:27,533 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-08-29 11:48:27,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 11:48:27,673 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 17 conjunts are in the unsatisfiable core [2021-08-29 11:48:27,675 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 11:48:27,847 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 11:48:27,848 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-29 11:48:27,955 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-08-29 11:48:27,955 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 11:48:27,955 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018621119] [2021-08-29 11:48:27,955 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-29 11:48:27,956 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [375004931] [2021-08-29 11:48:27,956 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [375004931] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-29 11:48:27,956 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-29 11:48:27,956 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 8 [2021-08-29 11:48:27,956 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739143018] [2021-08-29 11:48:27,957 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-29 11:48:27,957 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 11:48:27,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-29 11:48:27,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-08-29 11:48:27,958 INFO L87 Difference]: Start difference. First operand 16 states and 17 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 11:48:28,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 11:48:28,088 INFO L93 Difference]: Finished difference Result 26 states and 30 transitions. [2021-08-29 11:48:28,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-29 11:48:28,089 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-08-29 11:48:28,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 11:48:28,091 INFO L225 Difference]: With dead ends: 26 [2021-08-29 11:48:28,093 INFO L226 Difference]: Without dead ends: 20 [2021-08-29 11:48:28,094 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 129.85ms TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2021-08-29 11:48:28,095 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 14 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 51.84ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.82ms SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 65.71ms IncrementalHoareTripleChecker+Time [2021-08-29 11:48:28,096 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 0 Invalid, 95 Unknown, 0 Unchecked, 1.82ms Time], IncrementalHoareTripleChecker [16 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 65.71ms Time] [2021-08-29 11:48:28,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2021-08-29 11:48:28,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 19. [2021-08-29 11:48:28,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 18 states have internal predecessors, (21), 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) [2021-08-29 11:48:28,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2021-08-29 11:48:28,106 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 10 [2021-08-29 11:48:28,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 11:48:28,109 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2021-08-29 11:48:28,109 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 11:48:28,109 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2021-08-29 11:48:28,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-08-29 11:48:28,109 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 11:48:28,110 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 11:48:28,129 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-08-29 11:48:28,312 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-08-29 11:48:28,312 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 11:48:28,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 11:48:28,313 INFO L82 PathProgramCache]: Analyzing trace with hash 21628584, now seen corresponding path program 1 times [2021-08-29 11:48:28,313 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 11:48:28,313 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395641671] [2021-08-29 11:48:28,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 11:48:28,313 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 11:48:28,321 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-29 11:48:28,321 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [97845805] [2021-08-29 11:48:28,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 11:48:28,321 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 11:48:28,321 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 11:48:28,325 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) [2021-08-29 11:48:28,335 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-08-29 11:48:28,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 11:48:28,378 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 26 conjunts are in the unsatisfiable core [2021-08-29 11:48:28,379 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 11:48:28,636 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 11:48:28,636 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-29 11:48:28,846 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 11:48:28,847 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 11:48:28,847 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395641671] [2021-08-29 11:48:28,847 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-29 11:48:28,847 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [97845805] [2021-08-29 11:48:28,847 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [97845805] provided 1 perfect and 1 imperfect interpolant sequences [2021-08-29 11:48:28,847 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-08-29 11:48:28,847 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10] total 16 [2021-08-29 11:48:28,847 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430558730] [2021-08-29 11:48:28,848 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-08-29 11:48:28,848 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 11:48:28,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-29 11:48:28,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2021-08-29 11:48:28,849 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand has 9 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 9 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 11:48:29,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 11:48:29,129 INFO L93 Difference]: Finished difference Result 19 states and 21 transitions. [2021-08-29 11:48:29,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-29 11:48:29,129 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 9 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-08-29 11:48:29,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 11:48:29,129 INFO L225 Difference]: With dead ends: 19 [2021-08-29 11:48:29,129 INFO L226 Difference]: Without dead ends: 0 [2021-08-29 11:48:29,130 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 374.23ms TimeCoverageRelationStatistics Valid=132, Invalid=374, Unknown=0, NotChecked=0, Total=506 [2021-08-29 11:48:29,131 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 17 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 47.72ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.82ms SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 55.02ms IncrementalHoareTripleChecker+Time [2021-08-29 11:48:29,131 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 0 Invalid, 57 Unknown, 0 Unchecked, 0.82ms Time], IncrementalHoareTripleChecker [12 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 55.02ms Time] [2021-08-29 11:48:29,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-08-29 11:48:29,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-08-29 11:48:29,132 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) [2021-08-29 11:48:29,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-08-29 11:48:29,132 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2021-08-29 11:48:29,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 11:48:29,132 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-29 11:48:29,132 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 9 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 11:48:29,132 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-08-29 11:48:29,133 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-08-29 11:48:29,135 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2021-08-29 11:48:29,135 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2021-08-29 11:48:29,153 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-08-29 11:48:29,352 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 11:48:29,354 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-08-29 11:48:29,358 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-29 11:48:29,372 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-29 11:48:29,373 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-29 11:48:29,374 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-29 11:48:29,756 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-08-29 11:48:29,756 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 16) no Hoare annotation was computed. [2021-08-29 11:48:29,756 INFO L861 garLoopResultBuilder]: At program point L50(lines 21 51) the Hoare annotation is: true [2021-08-29 11:48:29,756 INFO L858 garLoopResultBuilder]: For program point L15(lines 15 16) no Hoare annotation was computed. [2021-08-29 11:48:29,756 INFO L858 garLoopResultBuilder]: For program point L15-1(lines 15 16) no Hoare annotation was computed. [2021-08-29 11:48:29,756 INFO L858 garLoopResultBuilder]: For program point L38(lines 38 43) no Hoare annotation was computed. [2021-08-29 11:48:29,756 INFO L858 garLoopResultBuilder]: For program point L38-2(lines 38 43) no Hoare annotation was computed. [2021-08-29 11:48:29,756 INFO L858 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-08-29 11:48:29,757 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-08-29 11:48:29,757 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-08-29 11:48:29,757 INFO L854 garLoopResultBuilder]: At program point L30-2(lines 30 45) the Hoare annotation is: (let ((.cse1 (* 2 (* ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~Y~0))) (.cse0 (* 2 ULTIMATE.start_main_~Y~0)) (.cse2 (* 2 ULTIMATE.start_main_~y~0)) (.cse3 (* 2 (* ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~y~0)))) (or (and (= ULTIMATE.start_main_~x~0 0) (= .cse0 (+ ULTIMATE.start_main_~X~0 ULTIMATE.start_main_~v~0)) (= (+ .cse1 .cse2 .cse0) (+ ULTIMATE.start_main_~X~0 ULTIMATE.start_main_~v~0 .cse3))) (let ((.cse4 (* 2 (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~X~0)))) (and (= (+ .cse1 .cse0) (+ ULTIMATE.start_main_~X~0 ULTIMATE.start_main_~v~0 .cse4)) (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (or (= (+ .cse4 .cse2) .cse3) (<= ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~X~0)))))) [2021-08-29 11:48:29,757 INFO L858 garLoopResultBuilder]: For program point L30-3(lines 30 45) no Hoare annotation was computed. [2021-08-29 11:48:29,757 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 16) no Hoare annotation was computed. [2021-08-29 11:48:29,757 INFO L858 garLoopResultBuilder]: For program point L14(lines 14 17) no Hoare annotation was computed. [2021-08-29 11:48:29,757 INFO L854 garLoopResultBuilder]: At program point L14-2(lines 34 35) the Hoare annotation is: (let ((.cse0 (* 2 (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~X~0)))) (and (= (+ (* 2 (* ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~Y~0)) (* 2 ULTIMATE.start_main_~Y~0)) (+ ULTIMATE.start_main_~X~0 ULTIMATE.start_main_~v~0 .cse0)) (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (or (= (+ .cse0 (* 2 ULTIMATE.start_main_~y~0)) (* 2 (* ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~y~0))) (<= ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~X~0)))) [2021-08-29 11:48:29,757 INFO L858 garLoopResultBuilder]: For program point L14-3(lines 14 17) no Hoare annotation was computed. [2021-08-29 11:48:29,757 INFO L861 garLoopResultBuilder]: At program point L14-5(lines 13 19) the Hoare annotation is: true [2021-08-29 11:48:29,760 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-29 11:48:29,790 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.08 11:48:29 BoogieIcfgContainer [2021-08-29 11:48:29,790 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-29 11:48:29,791 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-29 11:48:29,791 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-29 11:48:29,792 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-29 11:48:29,792 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 11:48:26" (3/4) ... [2021-08-29 11:48:29,794 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-08-29 11:48:29,802 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2021-08-29 11:48:29,803 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-08-29 11:48:29,804 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-29 11:48:29,806 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-29 11:48:29,830 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-29 11:48:29,830 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-29 11:48:29,830 INFO L158 Benchmark]: Toolchain (without parser) took 3561.61ms. Allocated memory was 67.1MB in the beginning and 86.0MB in the end (delta: 18.9MB). Free memory was 48.1MB in the beginning and 47.6MB in the end (delta: 437.9kB). Peak memory consumption was 17.8MB. Max. memory is 16.1GB. [2021-08-29 11:48:29,830 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 67.1MB. Free memory was 49.6MB in the beginning and 49.5MB in the end (delta: 48.6kB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-29 11:48:29,830 INFO L158 Benchmark]: CACSL2BoogieTranslator took 196.14ms. Allocated memory is still 67.1MB. Free memory was 47.9MB in the beginning and 50.8MB in the end (delta: -2.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-08-29 11:48:29,831 INFO L158 Benchmark]: Boogie Procedure Inliner took 25.47ms. Allocated memory is still 67.1MB. Free memory was 50.8MB in the beginning and 49.2MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-29 11:48:29,831 INFO L158 Benchmark]: Boogie Preprocessor took 24.07ms. Allocated memory is still 67.1MB. Free memory was 49.2MB in the beginning and 48.1MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-29 11:48:29,831 INFO L158 Benchmark]: RCFGBuilder took 198.59ms. Allocated memory is still 67.1MB. Free memory was 48.1MB in the beginning and 39.4MB in the end (delta: 8.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-08-29 11:48:29,831 INFO L158 Benchmark]: TraceAbstraction took 3052.26ms. Allocated memory was 67.1MB in the beginning and 86.0MB in the end (delta: 18.9MB). Free memory was 39.0MB in the beginning and 50.4MB in the end (delta: -11.4MB). Peak memory consumption was 10.9MB. Max. memory is 16.1GB. [2021-08-29 11:48:29,831 INFO L158 Benchmark]: Witness Printer took 38.33ms. Allocated memory is still 86.0MB. Free memory was 50.4MB in the beginning and 47.6MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-08-29 11:48:29,832 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 67.1MB. Free memory was 49.6MB in the beginning and 49.5MB in the end (delta: 48.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 196.14ms. Allocated memory is still 67.1MB. Free memory was 47.9MB in the beginning and 50.8MB in the end (delta: -2.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 25.47ms. Allocated memory is still 67.1MB. Free memory was 50.8MB in the beginning and 49.2MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 24.07ms. Allocated memory is still 67.1MB. Free memory was 49.2MB in the beginning and 48.1MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 198.59ms. Allocated memory is still 67.1MB. Free memory was 48.1MB in the beginning and 39.4MB in the end (delta: 8.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 3052.26ms. Allocated memory was 67.1MB in the beginning and 86.0MB in the end (delta: 18.9MB). Free memory was 39.0MB in the beginning and 50.4MB in the end (delta: -11.4MB). Peak memory consumption was 10.9MB. Max. memory is 16.1GB. * Witness Printer took 38.33ms. Allocated memory is still 86.0MB. Free memory was 50.4MB in the beginning and 47.6MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.00ms ErrorAutomatonConstructionTimeTotal, 0.00ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.00ms ErrorAutomatonConstructionTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeAvg, 0.00ms 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 - 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 1 procedures, 17 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 2978.40ms, OverallIterations: 3, TraceHistogramMax: 2, EmptinessCheckTime: 6.91ms, AutomataDifference: 579.01ms, DeadEndRemovalTime: 0.00ms, HoareAnnotationTime: 402.47ms, InitialAbstractionConstructionTime: 6.44ms, PartialOrderReductionTime: 0.00ms, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 47 SdHoareTripleChecker+Valid, 200.72ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 47 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 146.88ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 46 mSDsCounter, 33 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 178 IncrementalHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 33 mSolverCounterUnsat, 0 mSDtfsCounter, 178 mSolverCounterSat, 4.94ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 59 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 530.01ms Time, 0.00ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred in iteration=2, InterpolantAutomatonStates: 24, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.00ms DumpTime, AutomataMinimizationStatistics: 21.68ms AutomataMinimizationTime, 3 MinimizatonAttempts, 4 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.00ms HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 14 NumberOfFragments, 117 HoareAnnotationTreeSize, 4 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 37.23ms HoareSimplificationTime, 4 FomulaSimplificationsInter, 198 FormulaSimplificationTreeSizeReductionInter, 359.93ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 13.82ms SsaConstructionTime, 151.31ms SatisfiabilityAnalysisTime, 907.92ms InterpolantComputationTime, 28 NumberOfCodeBlocks, 28 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 46 ConstructedInterpolants, 0 QuantifiedInterpolants, 535 SizeOfPredicates, 31 NumberOfNonLiveVariables, 210 ConjunctsInSsa, 56 ConjunctsInUnsatCore, 5 InterpolantComputations, 2 PerfectInterpolantSequences, 4/10 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 2 specifications checked. All of them hold - InvariantResult [Line: 30]: Loop Invariant Derived loop invariant: ((x == 0 && 2 * Y == X + v) && 2 * (x * Y) + 2 * y + 2 * Y == X + v + 2 * (x * y)) || ((2 * (x * Y) + 2 * Y == X + v + 2 * (y * X) && 1 <= cond) && (2 * (y * X) + 2 * y == 2 * (x * y) || x <= X)) - InvariantResult [Line: 13]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 21]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 34]: Loop Invariant Derived loop invariant: (2 * (x * Y) + 2 * Y == X + v + 2 * (y * X) && 1 <= cond) && (2 * (y * X) + 2 * y == 2 * (x * y) || x <= X) RESULT: Ultimate proved your program to be correct! [2021-08-29 11:48:29,848 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...