./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-zilu/benchmark34_conjunctive.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7c85f1d-84f5-4f79-a951-77d7688fb8c2/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7c85f1d-84f5-4f79-a951-77d7688fb8c2/bin/utaipan-WLngWcDbfI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7c85f1d-84f5-4f79-a951-77d7688fb8c2/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7c85f1d-84f5-4f79-a951-77d7688fb8c2/bin/utaipan-WLngWcDbfI/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-zilu/benchmark34_conjunctive.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7c85f1d-84f5-4f79-a951-77d7688fb8c2/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7c85f1d-84f5-4f79-a951-77d7688fb8c2/bin/utaipan-WLngWcDbfI --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 58313a706dc1d8f505ffe0e88ce66e9b5e9ea53a .............................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2021-10-11 02:25:09,297 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:25:09,299 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:25:09,352 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:25:09,353 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:25:09,358 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:25:09,362 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:25:09,367 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:25:09,369 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:25:09,375 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:25:09,377 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:25:09,378 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:25:09,379 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:25:09,383 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:25:09,384 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:25:09,386 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:25:09,389 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:25:09,390 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:25:09,398 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:25:09,400 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:25:09,402 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:25:09,404 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:25:09,405 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:25:09,406 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:25:09,409 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:25:09,410 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:25:09,410 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:25:09,411 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:25:09,412 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:25:09,413 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:25:09,414 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:25:09,415 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:25:09,416 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:25:09,417 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:25:09,418 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:25:09,418 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:25:09,419 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:25:09,419 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:25:09,419 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:25:09,420 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:25:09,421 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:25:09,422 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7c85f1d-84f5-4f79-a951-77d7688fb8c2/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-11 02:25:09,448 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:25:09,448 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:25:09,449 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:25:09,449 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:25:09,450 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:25:09,450 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:25:09,450 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-11 02:25:09,450 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:25:09,450 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:25:09,451 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-11 02:25:09,451 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-11 02:25:09,451 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:25:09,451 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-11 02:25:09,451 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-11 02:25:09,452 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-11 02:25:09,452 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:25:09,453 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 02:25:09,453 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 02:25:09,453 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 02:25:09,453 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:25:09,453 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 02:25:09,454 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:25:09,454 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 02:25:09,454 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-11 02:25:09,454 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 02:25:09,454 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 02:25:09,455 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:25:09,455 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 02:25:09,455 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:25:09,455 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:25:09,455 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:25:09,456 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:25:09,456 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:25:09,456 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 02:25:09,456 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-11 02:25:09,456 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 02:25:09,457 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 02:25:09,457 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:25:09,457 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:25:09,457 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7c85f1d-84f5-4f79-a951-77d7688fb8c2/bin/utaipan-WLngWcDbfI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7c85f1d-84f5-4f79-a951-77d7688fb8c2/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 58313a706dc1d8f505ffe0e88ce66e9b5e9ea53a [2021-10-11 02:25:09,722 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:25:09,760 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:25:09,762 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:25:09,764 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:25:09,765 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:25:09,766 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7c85f1d-84f5-4f79-a951-77d7688fb8c2/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/loop-zilu/benchmark34_conjunctive.i [2021-10-11 02:25:09,849 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7c85f1d-84f5-4f79-a951-77d7688fb8c2/bin/utaipan-WLngWcDbfI/data/2bc13ccaf/e0e7677a15584b29a5a9bcdeaa516408/FLAGf7b26dbe8 [2021-10-11 02:25:10,376 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:25:10,376 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7c85f1d-84f5-4f79-a951-77d7688fb8c2/sv-benchmarks/c/loop-zilu/benchmark34_conjunctive.i [2021-10-11 02:25:10,384 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7c85f1d-84f5-4f79-a951-77d7688fb8c2/bin/utaipan-WLngWcDbfI/data/2bc13ccaf/e0e7677a15584b29a5a9bcdeaa516408/FLAGf7b26dbe8 [2021-10-11 02:25:10,733 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7c85f1d-84f5-4f79-a951-77d7688fb8c2/bin/utaipan-WLngWcDbfI/data/2bc13ccaf/e0e7677a15584b29a5a9bcdeaa516408 [2021-10-11 02:25:10,737 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:25:10,739 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:25:10,743 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:25:10,744 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:25:10,748 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:25:10,748 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:25:10" (1/1) ... [2021-10-11 02:25:10,756 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@725a52cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:25:10, skipping insertion in model container [2021-10-11 02:25:10,756 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:25:10" (1/1) ... [2021-10-11 02:25:10,763 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:25:10,779 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:25:10,942 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7c85f1d-84f5-4f79-a951-77d7688fb8c2/sv-benchmarks/c/loop-zilu/benchmark34_conjunctive.i[873,886] [2021-10-11 02:25:10,965 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:25:10,974 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 02:25:10,988 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7c85f1d-84f5-4f79-a951-77d7688fb8c2/sv-benchmarks/c/loop-zilu/benchmark34_conjunctive.i[873,886] [2021-10-11 02:25:10,991 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:25:11,006 INFO L208 MainTranslator]: Completed translation [2021-10-11 02:25:11,007 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:25:11 WrapperNode [2021-10-11 02:25:11,007 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:25:11,008 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 02:25:11,009 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 02:25:11,009 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 02:25:11,017 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:25:11" (1/1) ... [2021-10-11 02:25:11,024 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:25:11" (1/1) ... [2021-10-11 02:25:11,042 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 02:25:11,043 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 02:25:11,043 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 02:25:11,043 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 02:25:11,052 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:25:11" (1/1) ... [2021-10-11 02:25:11,052 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:25:11" (1/1) ... [2021-10-11 02:25:11,054 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:25:11" (1/1) ... [2021-10-11 02:25:11,054 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:25:11" (1/1) ... [2021-10-11 02:25:11,058 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:25:11" (1/1) ... [2021-10-11 02:25:11,061 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:25:11" (1/1) ... [2021-10-11 02:25:11,062 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:25:11" (1/1) ... [2021-10-11 02:25:11,064 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 02:25:11,065 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 02:25:11,066 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 02:25:11,066 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 02:25:11,067 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:25:11" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7c85f1d-84f5-4f79-a951-77d7688fb8c2/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:25:11,157 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-11 02:25:11,157 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 02:25:11,157 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 02:25:11,158 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 02:25:11,509 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 02:25:11,510 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-11 02:25:11,512 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:25:11 BoogieIcfgContainer [2021-10-11 02:25:11,512 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 02:25:11,514 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 02:25:11,515 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 02:25:11,533 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 02:25:11,533 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:25:10" (1/3) ... [2021-10-11 02:25:11,534 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60ea0e3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:25:11, skipping insertion in model container [2021-10-11 02:25:11,534 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:25:11" (2/3) ... [2021-10-11 02:25:11,535 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60ea0e3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:25:11, skipping insertion in model container [2021-10-11 02:25:11,535 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:25:11" (3/3) ... [2021-10-11 02:25:11,536 INFO L111 eAbstractionObserver]: Analyzing ICFG benchmark34_conjunctive.i [2021-10-11 02:25:11,550 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 02:25:11,553 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-10-11 02:25:11,565 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-11 02:25:11,589 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 02:25:11,589 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 02:25:11,589 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 02:25:11,589 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 02:25:11,590 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 02:25:11,590 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 02:25:11,590 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 02:25:11,590 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 02:25:11,603 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states. [2021-10-11 02:25:11,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-11 02:25:11,607 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:25:11,608 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-11 02:25:11,609 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:25:11,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:25:11,615 INFO L82 PathProgramCache]: Analyzing trace with hash 59349214, now seen corresponding path program 1 times [2021-10-11 02:25:11,624 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:25:11,625 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569231495] [2021-10-11 02:25:11,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:25:11,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:25:11,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:25:11,801 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569231495] [2021-10-11 02:25:11,802 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:25:11,802 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:25:11,803 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725646509] [2021-10-11 02:25:11,808 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:25:11,808 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:25:11,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:25:11,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:25:11,824 INFO L87 Difference]: Start difference. First operand 9 states. Second operand 3 states. [2021-10-11 02:25:11,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:25:11,854 INFO L93 Difference]: Finished difference Result 16 states and 19 transitions. [2021-10-11 02:25:11,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:25:11,856 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2021-10-11 02:25:11,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:25:11,864 INFO L225 Difference]: With dead ends: 16 [2021-10-11 02:25:11,864 INFO L226 Difference]: Without dead ends: 7 [2021-10-11 02:25:11,867 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:25:11,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2021-10-11 02:25:11,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2021-10-11 02:25:11,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-10-11 02:25:11,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2021-10-11 02:25:11,893 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 5 [2021-10-11 02:25:11,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:25:11,894 INFO L481 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2021-10-11 02:25:11,894 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:25:11,894 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2021-10-11 02:25:11,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-11 02:25:11,895 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:25:11,895 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-11 02:25:11,895 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 02:25:11,895 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:25:11,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:25:11,896 INFO L82 PathProgramCache]: Analyzing trace with hash 1839242300, now seen corresponding path program 1 times [2021-10-11 02:25:11,897 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:25:11,897 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943205012] [2021-10-11 02:25:11,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:25:11,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:25:12,045 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:25:12,045 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943205012] [2021-10-11 02:25:12,046 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1490268780] [2021-10-11 02:25:12,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7c85f1d-84f5-4f79-a951-77d7688fb8c2/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:25:12,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:25:12,139 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-11 02:25:12,146 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:25:12,239 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-10-11 02:25:12,255 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:25:12,255 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:25:12,301 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2021-10-11 02:25:12,343 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:25:12,343 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1177247623] [2021-10-11 02:25:12,372 INFO L159 IcfgInterpreter]: Started Sifa with 6 locations of interest [2021-10-11 02:25:12,372 INFO L166 IcfgInterpreter]: Building call graph [2021-10-11 02:25:12,378 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-11 02:25:12,384 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-11 02:25:12,384 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-11 02:25:12,951 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-11 02:25:13,094 WARN L197 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 33 [2021-10-11 02:25:13,244 WARN L197 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 53 [2021-10-11 02:25:13,472 WARN L197 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 32 [2021-10-11 02:25:13,475 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-11 02:25:13,476 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-10-11 02:25:13,476 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2021-10-11 02:25:13,477 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93750661] [2021-10-11 02:25:13,477 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-10-11 02:25:13,478 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:25:13,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-11 02:25:13,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2021-10-11 02:25:13,479 INFO L87 Difference]: Start difference. First operand 7 states and 7 transitions. Second operand 10 states. [2021-10-11 02:25:13,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:25:13,530 INFO L93 Difference]: Finished difference Result 11 states and 11 transitions. [2021-10-11 02:25:13,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-11 02:25:13,534 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 6 [2021-10-11 02:25:13,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:25:13,535 INFO L225 Difference]: With dead ends: 11 [2021-10-11 02:25:13,535 INFO L226 Difference]: Without dead ends: 8 [2021-10-11 02:25:13,538 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2021-10-11 02:25:13,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2021-10-11 02:25:13,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2021-10-11 02:25:13,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-10-11 02:25:13,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2021-10-11 02:25:13,542 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 6 [2021-10-11 02:25:13,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:25:13,543 INFO L481 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2021-10-11 02:25:13,543 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-10-11 02:25:13,544 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2021-10-11 02:25:13,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-11 02:25:13,550 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:25:13,550 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2021-10-11 02:25:13,777 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-10-11 02:25:13,778 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:25:13,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:25:13,778 INFO L82 PathProgramCache]: Analyzing trace with hash 1181353118, now seen corresponding path program 2 times [2021-10-11 02:25:13,779 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:25:13,779 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168648920] [2021-10-11 02:25:13,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:25:13,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:25:13,870 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-11 02:25:13,871 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168648920] [2021-10-11 02:25:13,873 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [354683335] [2021-10-11 02:25:13,873 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7c85f1d-84f5-4f79-a951-77d7688fb8c2/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:25:13,919 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-11 02:25:13,919 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-11 02:25:13,934 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-11 02:25:13,935 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:25:14,045 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:25:14,045 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:25:14,122 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:25:14,122 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [304711512] [2021-10-11 02:25:14,126 INFO L159 IcfgInterpreter]: Started Sifa with 6 locations of interest [2021-10-11 02:25:14,126 INFO L166 IcfgInterpreter]: Building call graph [2021-10-11 02:25:14,126 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-11 02:25:14,127 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-11 02:25:14,127 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-11 02:25:14,393 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-11 02:25:14,549 WARN L197 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 33 [2021-10-11 02:25:14,680 WARN L197 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 53 [2021-10-11 02:25:14,899 WARN L197 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 32 [2021-10-11 02:25:14,900 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-11 02:25:14,900 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-10-11 02:25:14,901 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 6] total 12 [2021-10-11 02:25:14,901 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251534220] [2021-10-11 02:25:14,901 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-10-11 02:25:14,901 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:25:14,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-11 02:25:14,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2021-10-11 02:25:14,902 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand 12 states. [2021-10-11 02:25:15,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:25:15,012 INFO L93 Difference]: Finished difference Result 10 states and 11 transitions. [2021-10-11 02:25:15,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-11 02:25:15,013 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 7 [2021-10-11 02:25:15,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:25:15,013 INFO L225 Difference]: With dead ends: 10 [2021-10-11 02:25:15,013 INFO L226 Difference]: Without dead ends: 0 [2021-10-11 02:25:15,014 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=87, Invalid=255, Unknown=0, NotChecked=0, Total=342 [2021-10-11 02:25:15,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-11 02:25:15,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-11 02:25:15,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-10-11 02:25:15,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-11 02:25:15,014 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 7 [2021-10-11 02:25:15,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:25:15,014 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-11 02:25:15,015 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2021-10-11 02:25:15,015 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-11 02:25:15,015 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-11 02:25:15,215 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2021-10-11 02:25:15,217 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-11 02:25:15,254 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-11 02:25:15,255 INFO L262 CegarLoopResult]: For program point L23(line 23) no Hoare annotation was computed. [2021-10-11 02:25:15,255 INFO L262 CegarLoopResult]: For program point L15(lines 15 17) no Hoare annotation was computed. [2021-10-11 02:25:15,257 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-11 02:25:15,257 INFO L265 CegarLoopResult]: At program point L28(lines 19 29) the Hoare annotation is: true [2021-10-11 02:25:15,257 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 16) no Hoare annotation was computed. [2021-10-11 02:25:15,258 INFO L258 CegarLoopResult]: At program point L24-2(lines 24 26) the Hoare annotation is: (let ((.cse0 (+ ULTIMATE.start_main_~k~0 ULTIMATE.start_main_~j~0))) (and (< 0 ULTIMATE.start_main_~n~0) (<= .cse0 ULTIMATE.start_main_~n~0) (<= ULTIMATE.start_main_~n~0 .cse0) (< 0 (+ ULTIMATE.start_main_~k~0 1)))) [2021-10-11 02:25:15,258 INFO L262 CegarLoopResult]: For program point L16(line 16) no Hoare annotation was computed. [2021-10-11 02:25:15,258 INFO L262 CegarLoopResult]: For program point L14(lines 14 18) no Hoare annotation was computed. [2021-10-11 02:25:15,280 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:25:15 BoogieIcfgContainer [2021-10-11 02:25:15,280 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 02:25:15,281 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 02:25:15,281 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 02:25:15,281 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 02:25:15,282 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:25:11" (3/4) ... [2021-10-11 02:25:15,284 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-11 02:25:15,291 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2021-10-11 02:25:15,291 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2021-10-11 02:25:15,292 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-11 02:25:15,292 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-11 02:25:15,326 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b7c85f1d-84f5-4f79-a951-77d7688fb8c2/bin/utaipan-WLngWcDbfI/witness.graphml [2021-10-11 02:25:15,326 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 02:25:15,327 INFO L168 Benchmark]: Toolchain (without parser) took 4587.76 ms. Allocated memory was 102.8 MB in the beginning and 148.9 MB in the end (delta: 46.1 MB). Free memory was 74.7 MB in the beginning and 79.9 MB in the end (delta: -5.2 MB). Peak memory consumption was 41.6 MB. Max. memory is 16.1 GB. [2021-10-11 02:25:15,328 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 102.8 MB. Free memory is still 60.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:25:15,328 INFO L168 Benchmark]: CACSL2BoogieTranslator took 264.10 ms. Allocated memory was 102.8 MB in the beginning and 123.7 MB in the end (delta: 21.0 MB). Free memory was 74.7 MB in the beginning and 99.6 MB in the end (delta: -24.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-11 02:25:15,329 INFO L168 Benchmark]: Boogie Procedure Inliner took 33.96 ms. Allocated memory is still 123.7 MB. Free memory was 99.6 MB in the beginning and 98.1 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:25:15,329 INFO L168 Benchmark]: Boogie Preprocessor took 21.53 ms. Allocated memory is still 123.7 MB. Free memory was 98.1 MB in the beginning and 97.1 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:25:15,330 INFO L168 Benchmark]: RCFGBuilder took 447.17 ms. Allocated memory is still 123.7 MB. Free memory was 97.1 MB in the beginning and 83.1 MB in the end (delta: 14.0 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-11 02:25:15,330 INFO L168 Benchmark]: TraceAbstraction took 3765.80 ms. Allocated memory was 123.7 MB in the beginning and 148.9 MB in the end (delta: 25.2 MB). Free memory was 82.8 MB in the beginning and 83.0 MB in the end (delta: -242.8 kB). Peak memory consumption was 28.3 MB. Max. memory is 16.1 GB. [2021-10-11 02:25:15,331 INFO L168 Benchmark]: Witness Printer took 45.54 ms. Allocated memory is still 148.9 MB. Free memory was 83.0 MB in the beginning and 79.9 MB in the end (delta: 3.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:25:15,334 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 102.8 MB. Free memory is still 60.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 264.10 ms. Allocated memory was 102.8 MB in the beginning and 123.7 MB in the end (delta: 21.0 MB). Free memory was 74.7 MB in the beginning and 99.6 MB in the end (delta: -24.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 33.96 ms. Allocated memory is still 123.7 MB. Free memory was 99.6 MB in the beginning and 98.1 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 21.53 ms. Allocated memory is still 123.7 MB. Free memory was 98.1 MB in the beginning and 97.1 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 447.17 ms. Allocated memory is still 123.7 MB. Free memory was 97.1 MB in the beginning and 83.1 MB in the end (delta: 14.0 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3765.80 ms. Allocated memory was 123.7 MB in the beginning and 148.9 MB in the end (delta: 25.2 MB). Free memory was 82.8 MB in the beginning and 83.0 MB in the end (delta: -242.8 kB). Peak memory consumption was 28.3 MB. Max. memory is 16.1 GB. * Witness Printer took 45.54 ms. Allocated memory is still 148.9 MB. Free memory was 83.0 MB in the beginning and 79.9 MB in the end (delta: 3.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 16]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: ((0 < n && k + j <= n) && n <= k + j) && 0 < k + 1 - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 9 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.6s, OverallIterations: 3, TraceHistogramMax: 2, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 15 SDtfs, 6 SDslu, 16 SDs, 0 SdLazy, 48 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 53 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 1.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=9occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 6 NumberOfFragments, 20 HoareAnnotationTreeSize, 2 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 41 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 31 NumberOfCodeBlocks, 31 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 37 ConstructedInterpolants, 0 QuantifiedInterpolants, 1357 SizeOfPredicates, 14 NumberOfNonLiveVariables, 106 ConjunctsInSsa, 35 ConjunctsInUnsatCore, 7 InterpolantComputations, 1 PerfectInterpolantSequences, 1/12 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 RESULT: Ultimate proved your program to be correct! Received shutdown request...