./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loop-zilu/benchmark17_conjunctive.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-zilu/benchmark17_conjunctive.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 b378e4d816fc03ad4f0d55b7b28d5e925e1eecc3 ............................................................................................................................................................................................................................................................................................................................... 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 11:47:18,657 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-29 11:47:18,659 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-29 11:47:18,678 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-29 11:47:18,678 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-29 11:47:18,679 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-29 11:47:18,680 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-29 11:47:18,681 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-29 11:47:18,682 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-29 11:47:18,683 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-29 11:47:18,684 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-29 11:47:18,691 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-29 11:47:18,691 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-29 11:47:18,692 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-29 11:47:18,693 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-29 11:47:18,694 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-29 11:47:18,695 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-29 11:47:18,695 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-29 11:47:18,697 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-29 11:47:18,698 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-29 11:47:18,699 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-29 11:47:18,699 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-29 11:47:18,700 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-29 11:47:18,701 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-29 11:47:18,703 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-29 11:47:18,703 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-29 11:47:18,703 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-29 11:47:18,704 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-29 11:47:18,704 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-29 11:47:18,705 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-29 11:47:18,705 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-29 11:47:18,705 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-29 11:47:18,706 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-29 11:47:18,706 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-29 11:47:18,707 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-29 11:47:18,707 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-29 11:47:18,708 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-29 11:47:18,708 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-29 11:47:18,708 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-29 11:47:18,709 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-29 11:47:18,709 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-29 11:47:18,714 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-08-29 11:47:18,730 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-29 11:47:18,730 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-29 11:47:18,730 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-29 11:47:18,730 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-29 11:47:18,731 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-29 11:47:18,731 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-29 11:47:18,731 INFO L138 SettingsManager]: * Use SBE=true [2021-08-29 11:47:18,732 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-29 11:47:18,732 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-29 11:47:18,732 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-29 11:47:18,732 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-29 11:47:18,732 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-29 11:47:18,732 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-29 11:47:18,732 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-29 11:47:18,733 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-29 11:47:18,733 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-29 11:47:18,733 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-29 11:47:18,733 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-29 11:47:18,733 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-29 11:47:18,733 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-29 11:47:18,734 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-29 11:47:18,734 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-29 11:47:18,734 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-29 11:47:18,734 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-29 11:47:18,734 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-29 11:47:18,734 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-29 11:47:18,734 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-29 11:47:18,735 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-29 11:47:18,735 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-29 11:47:18,735 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-29 11:47:18,735 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b378e4d816fc03ad4f0d55b7b28d5e925e1eecc3 [2021-08-29 11:47:18,931 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-29 11:47:18,956 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-29 11:47:18,958 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-29 11:47:18,959 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-29 11:47:18,959 INFO L275 PluginConnector]: CDTParser initialized [2021-08-29 11:47:18,960 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-zilu/benchmark17_conjunctive.i [2021-08-29 11:47:19,001 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/108f72f1e/6a33738e6c2247e1a8db08f6e1daf4c0/FLAGd0b710297 [2021-08-29 11:47:19,341 INFO L306 CDTParser]: Found 1 translation units. [2021-08-29 11:47:19,341 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-zilu/benchmark17_conjunctive.i [2021-08-29 11:47:19,345 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/108f72f1e/6a33738e6c2247e1a8db08f6e1daf4c0/FLAGd0b710297 [2021-08-29 11:47:19,784 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/108f72f1e/6a33738e6c2247e1a8db08f6e1daf4c0 [2021-08-29 11:47:19,786 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-29 11:47:19,788 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-29 11:47:19,788 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-29 11:47:19,789 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-29 11:47:19,791 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-29 11:47:19,792 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 11:47:19" (1/1) ... [2021-08-29 11:47:19,793 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62bf1d76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:47:19, skipping insertion in model container [2021-08-29 11:47:19,793 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 11:47:19" (1/1) ... [2021-08-29 11:47:19,797 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-29 11:47:19,806 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-29 11:47:19,938 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-zilu/benchmark17_conjunctive.i[873,886] [2021-08-29 11:47:19,959 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-29 11:47:19,963 INFO L203 MainTranslator]: Completed pre-run [2021-08-29 11:47:19,977 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-zilu/benchmark17_conjunctive.i[873,886] [2021-08-29 11:47:19,981 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-29 11:47:19,998 INFO L208 MainTranslator]: Completed translation [2021-08-29 11:47:19,999 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:47:19 WrapperNode [2021-08-29 11:47:20,000 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-29 11:47:20,001 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-29 11:47:20,001 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-29 11:47:20,002 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-29 11:47:20,009 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:47:19" (1/1) ... [2021-08-29 11:47:20,014 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:47:19" (1/1) ... [2021-08-29 11:47:20,052 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-29 11:47:20,053 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-29 11:47:20,053 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-29 11:47:20,053 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-29 11:47:20,058 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:47:19" (1/1) ... [2021-08-29 11:47:20,058 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:47:19" (1/1) ... [2021-08-29 11:47:20,066 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:47:19" (1/1) ... [2021-08-29 11:47:20,066 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:47:19" (1/1) ... [2021-08-29 11:47:20,074 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:47:19" (1/1) ... [2021-08-29 11:47:20,087 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:47:19" (1/1) ... [2021-08-29 11:47:20,088 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:47:19" (1/1) ... [2021-08-29 11:47:20,090 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-29 11:47:20,091 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-29 11:47:20,091 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-29 11:47:20,091 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-29 11:47:20,092 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:47:19" (1/1) ... [2021-08-29 11:47:20,109 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-29 11:47:20,118 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 11:47:20,154 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 11:47:20,202 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 11:47:20,211 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-29 11:47:20,211 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-29 11:47:20,212 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-29 11:47:20,212 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-29 11:47:20,291 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-29 11:47:20,292 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-08-29 11:47:20,293 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 11:47:20 BoogieIcfgContainer [2021-08-29 11:47:20,293 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-29 11:47:20,294 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-29 11:47:20,294 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-29 11:47:20,297 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-29 11:47:20,300 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.08 11:47:19" (1/3) ... [2021-08-29 11:47:20,300 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35700c6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 11:47:20, skipping insertion in model container [2021-08-29 11:47:20,301 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:47:19" (2/3) ... [2021-08-29 11:47:20,301 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35700c6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 11:47:20, skipping insertion in model container [2021-08-29 11:47:20,308 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 11:47:20" (3/3) ... [2021-08-29 11:47:20,309 INFO L111 eAbstractionObserver]: Analyzing ICFG benchmark17_conjunctive.i [2021-08-29 11:47:20,312 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-29 11:47:20,312 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-29 11:47:20,363 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-29 11:47:20,367 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 11:47:20,367 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-08-29 11:47:20,376 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 11:47:20,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-08-29 11:47:20,379 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 11:47:20,379 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-29 11:47:20,380 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 11:47:20,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 11:47:20,383 INFO L82 PathProgramCache]: Analyzing trace with hash 1807089479, now seen corresponding path program 1 times [2021-08-29 11:47:20,388 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 11:47:20,389 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149500919] [2021-08-29 11:47:20,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 11:47:20,389 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 11:47:20,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 11:47:20,495 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 11:47:20,495 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 11:47:20,496 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149500919] [2021-08-29 11:47:20,496 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1149500919] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 11:47:20,496 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 11:47:20,497 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-29 11:47:20,498 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643364972] [2021-08-29 11:47:20,500 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-08-29 11:47:20,500 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 11:47:20,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-08-29 11:47:20,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-29 11:47:20,520 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 11:47:20,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 11:47:20,577 INFO L93 Difference]: Finished difference Result 20 states and 23 transitions. [2021-08-29 11:47:20,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-08-29 11:47:20,579 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 11:47:20,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 11:47:20,583 INFO L225 Difference]: With dead ends: 20 [2021-08-29 11:47:20,583 INFO L226 Difference]: Without dead ends: 8 [2021-08-29 11:47:20,585 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.02ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-29 11:47:20,587 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 43.32ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.15ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 49.15ms IncrementalHoareTripleChecker+Time [2021-08-29 11:47:20,588 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 13 Unknown, 0 Unchecked, 0.15ms Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 49.15ms Time] [2021-08-29 11:47:20,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2021-08-29 11:47:20,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2021-08-29 11:47:20,620 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 11:47:20,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2021-08-29 11:47:20,621 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 7 [2021-08-29 11:47:20,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 11:47:20,621 INFO L470 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2021-08-29 11:47:20,621 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 11:47:20,621 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2021-08-29 11:47:20,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-08-29 11:47:20,621 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 11:47:20,621 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-29 11:47:20,622 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-29 11:47:20,622 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 11:47:20,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 11:47:20,622 INFO L82 PathProgramCache]: Analyzing trace with hash 1806970315, now seen corresponding path program 1 times [2021-08-29 11:47:20,623 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 11:47:20,623 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102670686] [2021-08-29 11:47:20,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 11:47:20,623 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 11:47:20,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 11:47:20,722 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 11:47:20,722 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 11:47:20,723 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102670686] [2021-08-29 11:47:20,723 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1102670686] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 11:47:20,723 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 11:47:20,723 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-29 11:47:20,723 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725627366] [2021-08-29 11:47:20,724 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-29 11:47:20,724 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 11:47:20,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-29 11:47:20,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-29 11:47:20,725 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand has 5 states, 5 states have (on average 1.4) internal successors, (7), 5 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 11:47:20,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 11:47:20,757 INFO L93 Difference]: Finished difference Result 8 states and 8 transitions. [2021-08-29 11:47:20,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-29 11:47:20,758 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.4) internal successors, (7), 5 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 11:47:20,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 11:47:20,758 INFO L225 Difference]: With dead ends: 8 [2021-08-29 11:47:20,758 INFO L226 Difference]: Without dead ends: 0 [2021-08-29 11:47:20,761 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 27.78ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-29 11:47:20,763 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 3 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.41ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.49ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.83ms IncrementalHoareTripleChecker+Time [2021-08-29 11:47:20,764 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 0 Invalid, 18 Unknown, 0 Unchecked, 0.49ms Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 15.83ms Time] [2021-08-29 11:47:20,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-08-29 11:47:20,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-08-29 11:47:20,766 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 11:47:20,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-08-29 11:47:20,766 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 7 [2021-08-29 11:47:20,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 11:47:20,767 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-29 11:47:20,767 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.4) internal successors, (7), 5 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 11:47:20,767 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-08-29 11:47:20,767 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-08-29 11:47:20,769 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-08-29 11:47:20,770 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-29 11:47:20,771 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-08-29 11:47:20,773 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-29 11:47:20,775 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-29 11:47:20,779 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-08-29 11:47:20,779 INFO L861 garLoopResultBuilder]: At program point L29(lines 19 30) the Hoare annotation is: true [2021-08-29 11:47:20,779 INFO L858 garLoopResultBuilder]: For program point L23(line 23) no Hoare annotation was computed. [2021-08-29 11:47:20,779 INFO L858 garLoopResultBuilder]: For program point L15(lines 15 17) no Hoare annotation was computed. [2021-08-29 11:47:20,779 INFO L858 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-08-29 11:47:20,780 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-08-29 11:47:20,780 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-08-29 11:47:20,782 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 16) no Hoare annotation was computed. [2021-08-29 11:47:20,782 INFO L854 garLoopResultBuilder]: At program point L24-2(lines 24 27) the Hoare annotation is: (<= ULTIMATE.start_main_~i~0 ULTIMATE.start_main_~k~0) [2021-08-29 11:47:20,782 INFO L858 garLoopResultBuilder]: For program point L24-3(lines 24 27) no Hoare annotation was computed. [2021-08-29 11:47:20,783 INFO L858 garLoopResultBuilder]: For program point L16(line 16) no Hoare annotation was computed. [2021-08-29 11:47:20,784 INFO L858 garLoopResultBuilder]: For program point L14(lines 14 18) no Hoare annotation was computed. [2021-08-29 11:47:20,786 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-29 11:47:20,799 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.08 11:47:20 BoogieIcfgContainer [2021-08-29 11:47:20,799 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-29 11:47:20,800 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-29 11:47:20,802 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-29 11:47:20,802 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-29 11:47:20,803 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 11:47:20" (3/4) ... [2021-08-29 11:47:20,811 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-08-29 11:47:20,816 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2021-08-29 11:47:20,816 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-08-29 11:47:20,817 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-29 11:47:20,817 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-29 11:47:20,841 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-29 11:47:20,841 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-29 11:47:20,841 INFO L158 Benchmark]: Toolchain (without parser) took 1053.89ms. Allocated memory was 50.3MB in the beginning and 71.3MB in the end (delta: 21.0MB). Free memory was 28.4MB in the beginning and 35.5MB in the end (delta: -7.1MB). Peak memory consumption was 15.2MB. Max. memory is 16.1GB. [2021-08-29 11:47:20,842 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 50.3MB. Free memory is still 32.1MB. There was no memory consumed. Max. memory is 16.1GB. [2021-08-29 11:47:20,842 INFO L158 Benchmark]: CACSL2BoogieTranslator took 211.72ms. Allocated memory was 50.3MB in the beginning and 71.3MB in the end (delta: 21.0MB). Free memory was 28.2MB in the beginning and 55.3MB in the end (delta: -27.1MB). Peak memory consumption was 5.1MB. Max. memory is 16.1GB. [2021-08-29 11:47:20,842 INFO L158 Benchmark]: Boogie Procedure Inliner took 50.95ms. Allocated memory is still 71.3MB. Free memory was 55.3MB in the beginning and 53.7MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-29 11:47:20,843 INFO L158 Benchmark]: Boogie Preprocessor took 37.45ms. Allocated memory is still 71.3MB. Free memory was 53.7MB in the beginning and 52.7MB in the end (delta: 921.6kB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-29 11:47:20,843 INFO L158 Benchmark]: RCFGBuilder took 202.65ms. Allocated memory is still 71.3MB. Free memory was 52.7MB in the beginning and 44.5MB in the end (delta: 8.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-08-29 11:47:20,843 INFO L158 Benchmark]: TraceAbstraction took 504.93ms. Allocated memory is still 71.3MB. Free memory was 44.1MB in the beginning and 38.0MB in the end (delta: 6.1MB). Peak memory consumption was 9.9MB. Max. memory is 16.1GB. [2021-08-29 11:47:20,843 INFO L158 Benchmark]: Witness Printer took 40.92ms. Allocated memory is still 71.3MB. Free memory was 37.6MB in the beginning and 35.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-08-29 11:47:20,845 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 50.3MB. Free memory is still 32.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 211.72ms. Allocated memory was 50.3MB in the beginning and 71.3MB in the end (delta: 21.0MB). Free memory was 28.2MB in the beginning and 55.3MB in the end (delta: -27.1MB). Peak memory consumption was 5.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 50.95ms. Allocated memory is still 71.3MB. Free memory was 55.3MB in the beginning and 53.7MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 37.45ms. Allocated memory is still 71.3MB. Free memory was 53.7MB in the beginning and 52.7MB in the end (delta: 921.6kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 202.65ms. Allocated memory is still 71.3MB. Free memory was 52.7MB in the beginning and 44.5MB in the end (delta: 8.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 504.93ms. Allocated memory is still 71.3MB. Free memory was 44.1MB in the beginning and 38.0MB in the end (delta: 6.1MB). Peak memory consumption was 9.9MB. Max. memory is 16.1GB. * Witness Printer took 40.92ms. Allocated memory is still 71.3MB. Free memory was 37.6MB in the beginning and 35.5MB 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: 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, 12 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 424.57ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 6.56ms, AutomataDifference: 129.54ms, DeadEndRemovalTime: 0.00ms, HoareAnnotationTime: 8.88ms, InitialAbstractionConstructionTime: 5.57ms, PartialOrderReductionTime: 0.00ms, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 3 SdHoareTripleChecker+Valid, 64.97ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 56.73ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 5 mSDsCounter, 1 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 30 IncrementalHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1 mSolverCounterUnsat, 0 mSDtfsCounter, 30 mSolverCounterSat, 0.64ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 27.80ms Time, 0.00ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=12occurred in iteration=0, InterpolantAutomatonStates: 7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.00ms DumpTime, AutomataMinimizationStatistics: 8.91ms AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.00ms HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 3 NumberOfFragments, 4 HoareAnnotationTreeSize, 2 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 3.04ms HoareSimplificationTime, 2 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 1.73ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 4.77ms SsaConstructionTime, 27.02ms SatisfiabilityAnalysisTime, 122.09ms InterpolantComputationTime, 14 NumberOfCodeBlocks, 14 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 12 ConstructedInterpolants, 0 QuantifiedInterpolants, 19 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 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: i <= k - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2021-08-29 11:47:20,889 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...