./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loop-lit/gsv2008.i --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/loop-lit/gsv2008.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ad7102f2457c0f5542a3d448f84e7fa5158fff18 ................................................................................................................................................................................................................................................................................................................................................................................................ 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 11:02:01,790 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-29 11:02:01,793 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-29 11:02:01,829 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-29 11:02:01,830 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-29 11:02:01,832 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-29 11:02:01,833 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-29 11:02:01,837 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-29 11:02:01,839 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-29 11:02:01,842 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-29 11:02:01,843 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-29 11:02:01,844 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-29 11:02:01,844 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-29 11:02:01,846 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-29 11:02:01,847 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-29 11:02:01,852 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-29 11:02:01,852 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-29 11:02:01,853 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-29 11:02:01,854 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-29 11:02:01,859 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-29 11:02:01,860 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-29 11:02:01,860 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-29 11:02:01,862 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-29 11:02:01,862 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-29 11:02:01,867 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-29 11:02:01,867 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-29 11:02:01,868 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-29 11:02:01,869 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-29 11:02:01,869 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-29 11:02:01,870 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-29 11:02:01,870 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-29 11:02:01,870 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-29 11:02:01,871 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-29 11:02:01,872 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-29 11:02:01,873 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-29 11:02:01,873 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-29 11:02:01,873 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-29 11:02:01,874 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-29 11:02:01,874 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-29 11:02:01,875 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-29 11:02:01,875 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-29 11:02:01,876 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-08-29 11:02:01,905 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-29 11:02:01,906 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-29 11:02:01,906 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-29 11:02:01,907 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-29 11:02:01,908 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-29 11:02:01,908 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-29 11:02:01,908 INFO L138 SettingsManager]: * Use SBE=true [2021-08-29 11:02:01,909 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-29 11:02:01,909 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-29 11:02:01,909 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-29 11:02:01,910 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-29 11:02:01,910 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-29 11:02:01,910 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-29 11:02:01,910 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-29 11:02:01,910 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-29 11:02:01,910 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-29 11:02:01,910 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-29 11:02:01,911 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-29 11:02:01,911 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-29 11:02:01,911 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-29 11:02:01,911 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-29 11:02:01,911 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-29 11:02:01,911 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-29 11:02:01,912 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-29 11:02:01,912 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-29 11:02:01,912 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-29 11:02:01,912 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-29 11:02:01,912 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-29 11:02:01,912 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-29 11:02:01,912 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-29 11:02:01,913 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ad7102f2457c0f5542a3d448f84e7fa5158fff18 [2021-08-29 11:02:02,257 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-29 11:02:02,279 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-29 11:02:02,281 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-29 11:02:02,282 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-29 11:02:02,283 INFO L275 PluginConnector]: CDTParser initialized [2021-08-29 11:02:02,284 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-lit/gsv2008.i [2021-08-29 11:02:02,348 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e76e6334e/e6874bc123b5494c8cc7bfa57f3da12f/FLAGaa8b452d0 [2021-08-29 11:02:02,730 INFO L306 CDTParser]: Found 1 translation units. [2021-08-29 11:02:02,731 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-lit/gsv2008.i [2021-08-29 11:02:02,736 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e76e6334e/e6874bc123b5494c8cc7bfa57f3da12f/FLAGaa8b452d0 [2021-08-29 11:02:02,751 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e76e6334e/e6874bc123b5494c8cc7bfa57f3da12f [2021-08-29 11:02:02,753 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-29 11:02:02,755 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-29 11:02:02,758 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-29 11:02:02,758 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-29 11:02:02,760 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-29 11:02:02,761 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 11:02:02" (1/1) ... [2021-08-29 11:02:02,762 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d850056 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:02:02, skipping insertion in model container [2021-08-29 11:02:02,762 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 11:02:02" (1/1) ... [2021-08-29 11:02:02,766 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-29 11:02:02,777 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-29 11:02:02,894 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/loop-lit/gsv2008.i[895,908] [2021-08-29 11:02:02,906 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-29 11:02:02,911 INFO L203 MainTranslator]: Completed pre-run [2021-08-29 11:02:02,955 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/loop-lit/gsv2008.i[895,908] [2021-08-29 11:02:02,957 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-29 11:02:02,969 INFO L208 MainTranslator]: Completed translation [2021-08-29 11:02:02,969 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:02:02 WrapperNode [2021-08-29 11:02:02,970 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-29 11:02:02,973 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-29 11:02:02,973 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-29 11:02:02,973 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-29 11:02:02,978 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:02:02" (1/1) ... [2021-08-29 11:02:02,982 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:02:02" (1/1) ... [2021-08-29 11:02:02,994 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-29 11:02:02,996 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-29 11:02:02,996 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-29 11:02:02,996 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-29 11:02:03,001 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:02:02" (1/1) ... [2021-08-29 11:02:03,001 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:02:02" (1/1) ... [2021-08-29 11:02:03,002 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:02:02" (1/1) ... [2021-08-29 11:02:03,003 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:02:02" (1/1) ... [2021-08-29 11:02:03,006 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:02:02" (1/1) ... [2021-08-29 11:02:03,017 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:02:02" (1/1) ... [2021-08-29 11:02:03,020 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:02:02" (1/1) ... [2021-08-29 11:02:03,023 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-29 11:02:03,024 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-29 11:02:03,024 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-29 11:02:03,024 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-29 11:02:03,025 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:02:02" (1/1) ... [2021-08-29 11:02:03,031 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-29 11:02:03,039 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 11:02:03,050 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 11:02:03,068 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 11:02:03,081 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-29 11:02:03,081 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-29 11:02:03,082 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-29 11:02:03,082 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-29 11:02:03,205 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-29 11:02:03,206 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-08-29 11:02:03,207 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 11:02:03 BoogieIcfgContainer [2021-08-29 11:02:03,207 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-29 11:02:03,208 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-29 11:02:03,208 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-29 11:02:03,211 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-29 11:02:03,211 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.08 11:02:02" (1/3) ... [2021-08-29 11:02:03,212 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@565a3103 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 11:02:03, skipping insertion in model container [2021-08-29 11:02:03,212 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:02:02" (2/3) ... [2021-08-29 11:02:03,212 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@565a3103 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 11:02:03, skipping insertion in model container [2021-08-29 11:02:03,212 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 11:02:03" (3/3) ... [2021-08-29 11:02:03,213 INFO L111 eAbstractionObserver]: Analyzing ICFG gsv2008.i [2021-08-29 11:02:03,217 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-29 11:02:03,217 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-29 11:02:03,256 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-29 11:02:03,262 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 11:02:03,262 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-08-29 11:02:03,272 INFO L276 IsEmpty]: Start isEmpty. Operand has 12 states, 10 states have (on average 1.5) internal successors, (15), 11 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 11:02:03,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-08-29 11:02:03,276 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 11:02:03,276 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-29 11:02:03,277 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 11:02:03,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 11:02:03,280 INFO L82 PathProgramCache]: Analyzing trace with hash 1807089480, now seen corresponding path program 1 times [2021-08-29 11:02:03,287 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 11:02:03,287 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29331924] [2021-08-29 11:02:03,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 11:02:03,288 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 11:02:03,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 11:02:03,429 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 11:02:03,429 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 11:02:03,430 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29331924] [2021-08-29 11:02:03,430 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [29331924] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 11:02:03,430 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 11:02:03,431 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-29 11:02:03,432 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295721068] [2021-08-29 11:02:03,435 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-08-29 11:02:03,435 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 11:02:03,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-08-29 11:02:03,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-29 11:02:03,457 INFO L87 Difference]: Start difference. First operand has 12 states, 10 states have (on average 1.5) internal successors, (15), 11 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 11:02:03,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 11:02:03,505 INFO L93 Difference]: Finished difference Result 20 states and 23 transitions. [2021-08-29 11:02:03,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-08-29 11:02:03,509 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-08-29 11:02:03,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 11:02:03,513 INFO L225 Difference]: With dead ends: 20 [2021-08-29 11:02:03,513 INFO L226 Difference]: Without dead ends: 8 [2021-08-29 11:02:03,515 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.03ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-29 11:02:03,517 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 31.56ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.17ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 39.13ms IncrementalHoareTripleChecker+Time [2021-08-29 11:02:03,517 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 13 Unknown, 0 Unchecked, 0.17ms Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 39.13ms Time] [2021-08-29 11:02:03,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2021-08-29 11:02:03,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2021-08-29 11:02:03,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 11:02:03,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2021-08-29 11:02:03,566 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 7 [2021-08-29 11:02:03,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 11:02:03,566 INFO L470 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2021-08-29 11:02:03,567 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 11:02:03,567 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2021-08-29 11:02:03,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-08-29 11:02:03,567 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 11:02:03,567 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-29 11:02:03,567 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-29 11:02:03,567 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 11:02:03,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 11:02:03,568 INFO L82 PathProgramCache]: Analyzing trace with hash 1806970316, now seen corresponding path program 1 times [2021-08-29 11:02:03,568 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 11:02:03,568 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573500923] [2021-08-29 11:02:03,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 11:02:03,569 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 11:02:03,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 11:02:03,619 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 11:02:03,619 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 11:02:03,620 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573500923] [2021-08-29 11:02:03,620 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1573500923] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 11:02:03,620 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 11:02:03,620 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-29 11:02:03,620 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899767827] [2021-08-29 11:02:03,621 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-29 11:02:03,621 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 11:02:03,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-29 11:02:03,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-29 11:02:03,622 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 11:02:03,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 11:02:03,638 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2021-08-29 11:02:03,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-29 11:02:03,638 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-08-29 11:02:03,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 11:02:03,647 INFO L225 Difference]: With dead ends: 13 [2021-08-29 11:02:03,648 INFO L226 Difference]: Without dead ends: 9 [2021-08-29 11:02:03,652 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.99ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-29 11:02:03,653 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.21ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.34ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.00ms IncrementalHoareTripleChecker+Time [2021-08-29 11:02:03,653 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 14 Unknown, 0 Unchecked, 1.34ms Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 13.00ms Time] [2021-08-29 11:02:03,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2021-08-29 11:02:03,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2021-08-29 11:02:03,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 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 11:02:03,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2021-08-29 11:02:03,656 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 7 [2021-08-29 11:02:03,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 11:02:03,656 INFO L470 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2021-08-29 11:02:03,656 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 11:02:03,657 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2021-08-29 11:02:03,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-08-29 11:02:03,657 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 11:02:03,657 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 11:02:03,657 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-29 11:02:03,657 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 11:02:03,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 11:02:03,658 INFO L82 PathProgramCache]: Analyzing trace with hash 183170324, now seen corresponding path program 1 times [2021-08-29 11:02:03,658 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 11:02:03,658 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324530950] [2021-08-29 11:02:03,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 11:02:03,658 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 11:02:03,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 11:02:03,710 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 11:02:03,710 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 11:02:03,710 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324530950] [2021-08-29 11:02:03,711 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1324530950] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-29 11:02:03,711 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [584490431] [2021-08-29 11:02:03,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 11:02:03,711 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 11:02:03,711 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 11:02:03,712 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 11:02:03,730 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 11:02:03,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 11:02:03,752 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 7 conjunts are in the unsatisfiable core [2021-08-29 11:02:03,755 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 11:02:03,809 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 11:02:03,810 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-29 11:02:03,871 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 11:02:03,871 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [584490431] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-29 11:02:03,872 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-08-29 11:02:03,872 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2021-08-29 11:02:03,872 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158392360] [2021-08-29 11:02:03,872 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-08-29 11:02:03,872 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 11:02:03,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-29 11:02:03,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-08-29 11:02:03,873 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand has 10 states, 10 states have (on average 1.5) internal successors, (15), 10 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 11:02:03,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 11:02:03,917 INFO L93 Difference]: Finished difference Result 12 states and 13 transitions. [2021-08-29 11:02:03,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-29 11:02:03,917 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.5) internal successors, (15), 10 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-08-29 11:02:03,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 11:02:03,917 INFO L225 Difference]: With dead ends: 12 [2021-08-29 11:02:03,917 INFO L226 Difference]: Without dead ends: 0 [2021-08-29 11:02:03,918 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 60.39ms TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2021-08-29 11:02:03,919 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 6 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.11ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.47ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.37ms IncrementalHoareTripleChecker+Time [2021-08-29 11:02:03,919 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 0 Invalid, 46 Unknown, 0 Unchecked, 0.47ms Time], IncrementalHoareTripleChecker [4 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 21.37ms Time] [2021-08-29 11:02:03,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-08-29 11:02:03,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-08-29 11:02:03,920 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 11:02:03,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-08-29 11:02:03,920 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 8 [2021-08-29 11:02:03,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 11:02:03,921 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-29 11:02:03,921 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.5) internal successors, (15), 10 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 11:02:03,921 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-08-29 11:02:03,921 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-08-29 11:02:03,923 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-08-29 11:02:03,943 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 11:02:04,143 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 11:02:04,145 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-08-29 11:02:04,148 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-29 11:02:04,149 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-29 11:02:04,150 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-29 11:02:04,161 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-08-29 11:02:04,162 INFO L854 garLoopResultBuilder]: At program point L29-2(lines 29 32) the Hoare annotation is: (or (< ULTIMATE.start_main_~x~0 0) (< 0 ULTIMATE.start_main_~y~0)) [2021-08-29 11:02:04,162 INFO L858 garLoopResultBuilder]: For program point L29-3(lines 29 32) no Hoare annotation was computed. [2021-08-29 11:02:04,162 INFO L858 garLoopResultBuilder]: For program point L19(line 19) no Hoare annotation was computed. [2021-08-29 11:02:04,162 INFO L861 garLoopResultBuilder]: At program point L34(lines 24 35) the Hoare annotation is: true [2021-08-29 11:02:04,162 INFO L858 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-08-29 11:02:04,162 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-08-29 11:02:04,163 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-08-29 11:02:04,163 INFO L858 garLoopResultBuilder]: For program point L28(line 28) no Hoare annotation was computed. [2021-08-29 11:02:04,163 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2021-08-29 11:02:04,163 INFO L858 garLoopResultBuilder]: For program point L18(lines 18 20) no Hoare annotation was computed. [2021-08-29 11:02:04,163 INFO L861 garLoopResultBuilder]: At program point L18-2(lines 17 22) the Hoare annotation is: true [2021-08-29 11:02:04,166 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-29 11:02:04,175 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.08 11:02:04 BoogieIcfgContainer [2021-08-29 11:02:04,175 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-29 11:02:04,176 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-29 11:02:04,176 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-29 11:02:04,176 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-29 11:02:04,176 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 11:02:03" (3/4) ... [2021-08-29 11:02:04,178 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-08-29 11:02:04,184 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2021-08-29 11:02:04,184 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-08-29 11:02:04,184 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-29 11:02:04,184 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-29 11:02:04,204 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-29 11:02:04,204 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-29 11:02:04,204 INFO L158 Benchmark]: Toolchain (without parser) took 1449.81ms. Allocated memory was 54.5MB in the beginning and 75.5MB in the end (delta: 21.0MB). Free memory was 30.9MB in the beginning and 38.5MB in the end (delta: -7.5MB). Peak memory consumption was 13.9MB. Max. memory is 16.1GB. [2021-08-29 11:02:04,205 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 54.5MB. Free memory was 35.9MB in the beginning and 35.8MB in the end (delta: 60.3kB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-29 11:02:04,205 INFO L158 Benchmark]: CACSL2BoogieTranslator took 213.21ms. Allocated memory was 54.5MB in the beginning and 75.5MB in the end (delta: 21.0MB). Free memory was 30.7MB in the beginning and 58.6MB in the end (delta: -27.9MB). Peak memory consumption was 7.6MB. Max. memory is 16.1GB. [2021-08-29 11:02:04,205 INFO L158 Benchmark]: Boogie Procedure Inliner took 22.24ms. Allocated memory is still 75.5MB. Free memory was 58.6MB in the beginning and 57.2MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-29 11:02:04,206 INFO L158 Benchmark]: Boogie Preprocessor took 27.76ms. Allocated memory is still 75.5MB. Free memory was 57.2MB in the beginning and 56.3MB in the end (delta: 934.4kB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-29 11:02:04,206 INFO L158 Benchmark]: RCFGBuilder took 182.97ms. Allocated memory is still 75.5MB. Free memory was 56.1MB in the beginning and 48.2MB in the end (delta: 7.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-08-29 11:02:04,206 INFO L158 Benchmark]: TraceAbstraction took 967.29ms. Allocated memory is still 75.5MB. Free memory was 47.6MB in the beginning and 40.6MB in the end (delta: 7.1MB). Peak memory consumption was 10.3MB. Max. memory is 16.1GB. [2021-08-29 11:02:04,207 INFO L158 Benchmark]: Witness Printer took 28.03ms. Allocated memory is still 75.5MB. Free memory was 40.6MB in the beginning and 38.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-08-29 11:02:04,208 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 54.5MB. Free memory was 35.9MB in the beginning and 35.8MB in the end (delta: 60.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 213.21ms. Allocated memory was 54.5MB in the beginning and 75.5MB in the end (delta: 21.0MB). Free memory was 30.7MB in the beginning and 58.6MB in the end (delta: -27.9MB). Peak memory consumption was 7.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 22.24ms. Allocated memory is still 75.5MB. Free memory was 58.6MB in the beginning and 57.2MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 27.76ms. Allocated memory is still 75.5MB. Free memory was 57.2MB in the beginning and 56.3MB in the end (delta: 934.4kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 182.97ms. Allocated memory is still 75.5MB. Free memory was 56.1MB in the beginning and 48.2MB in the end (delta: 7.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 967.29ms. Allocated memory is still 75.5MB. Free memory was 47.6MB in the beginning and 40.6MB in the end (delta: 7.1MB). Peak memory consumption was 10.3MB. Max. memory is 16.1GB. * Witness Printer took 28.03ms. Allocated memory is still 75.5MB. Free memory was 40.6MB in the beginning and 38.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.00ms 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: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 12 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 911.50ms, OverallIterations: 3, TraceHistogramMax: 1, EmptinessCheckTime: 6.70ms, AutomataDifference: 163.40ms, DeadEndRemovalTime: 0.00ms, HoareAnnotationTime: 17.90ms, InitialAbstractionConstructionTime: 7.12ms, PartialOrderReductionTime: 0.00ms, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 6 SdHoareTripleChecker+Valid, 73.50ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 6 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 58.88ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 13 mSDsCounter, 4 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 69 IncrementalHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4 mSolverCounterUnsat, 0 mSDtfsCounter, 69 mSolverCounterSat, 1.98ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 28 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 63.41ms Time, 0.00ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=12occurred in iteration=0, InterpolantAutomatonStates: 14, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.00ms DumpTime, AutomataMinimizationStatistics: 29.07ms AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.00ms HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 7 NumberOfFragments, 9 HoareAnnotationTreeSize, 3 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 5.37ms HoareSimplificationTime, 3 FomulaSimplificationsInter, 10 FormulaSimplificationTreeSizeReductionInter, 8.24ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 15.06ms SsaConstructionTime, 53.55ms SatisfiabilityAnalysisTime, 249.96ms InterpolantComputationTime, 30 NumberOfCodeBlocks, 30 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 33 ConstructedInterpolants, 0 QuantifiedInterpolants, 88 SizeOfPredicates, 4 NumberOfNonLiveVariables, 46 ConjunctsInSsa, 7 ConjunctsInUnsatCore, 5 InterpolantComputations, 2 PerfectInterpolantSequences, 0/3 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: 24]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 29]: Loop Invariant Derived loop invariant: x < 0 || 0 < y RESULT: Ultimate proved your program to be correct! [2021-08-29 11:02:04,237 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...