./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/recursive/Addition01-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_66c31d33-6a17-432f-abd9-4d78bd85454c/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_66c31d33-6a17-432f-abd9-4d78bd85454c/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_66c31d33-6a17-432f-abd9-4d78bd85454c/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_66c31d33-6a17-432f-abd9-4d78bd85454c/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/recursive/Addition01-2.c -s /tmp/vcloud-vcloud-master/worker/run_dir_66c31d33-6a17-432f-abd9-4d78bd85454c/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_66c31d33-6a17-432f-abd9-4d78bd85454c/bin/utaipan --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 0c2780d79847d31970febd5cb46fb7efe933c8ec ............................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2020-12-09 14:06:55,589 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 14:06:55,590 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 14:06:55,612 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 14:06:55,612 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 14:06:55,613 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 14:06:55,624 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 14:06:55,626 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 14:06:55,627 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 14:06:55,628 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 14:06:55,629 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 14:06:55,630 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 14:06:55,630 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 14:06:55,631 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 14:06:55,632 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 14:06:55,633 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 14:06:55,634 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 14:06:55,634 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 14:06:55,636 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 14:06:55,637 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 14:06:55,639 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 14:06:55,644 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 14:06:55,645 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 14:06:55,646 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 14:06:55,649 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 14:06:55,649 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 14:06:55,650 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 14:06:55,651 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 14:06:55,651 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 14:06:55,652 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 14:06:55,652 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 14:06:55,653 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 14:06:55,654 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 14:06:55,655 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 14:06:55,656 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 14:06:55,656 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 14:06:55,657 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 14:06:55,657 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 14:06:55,657 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 14:06:55,658 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 14:06:55,658 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 14:06:55,659 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_66c31d33-6a17-432f-abd9-4d78bd85454c/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-12-09 14:06:55,677 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 14:06:55,678 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 14:06:55,678 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 14:06:55,678 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 14:06:55,678 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 14:06:55,679 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 14:06:55,679 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 14:06:55,679 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 14:06:55,679 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 14:06:55,679 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 14:06:55,679 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 14:06:55,679 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 14:06:55,679 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 14:06:55,679 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 14:06:55,680 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 14:06:55,680 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 14:06:55,680 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 14:06:55,680 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 14:06:55,680 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 14:06:55,680 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 14:06:55,681 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 14:06:55,681 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 14:06:55,681 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 14:06:55,681 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 14:06:55,681 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 14:06:55,681 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 14:06:55,681 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 14:06:55,681 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 14:06:55,681 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 14:06:55,682 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 14:06:55,682 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 14:06:55,682 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 14:06:55,682 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 14:06:55,682 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 14:06:55,682 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 14:06:55,682 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 14:06:55,682 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 14:06:55,682 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 14:06:55,682 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 14:06:55,683 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-vcloud-master/worker/run_dir_66c31d33-6a17-432f-abd9-4d78bd85454c/bin/utaipan/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_66c31d33-6a17-432f-abd9-4d78bd85454c/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0c2780d79847d31970febd5cb46fb7efe933c8ec [2020-12-09 14:06:55,851 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 14:06:55,871 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 14:06:55,873 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 14:06:55,874 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 14:06:55,874 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 14:06:55,875 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_66c31d33-6a17-432f-abd9-4d78bd85454c/bin/utaipan/../../sv-benchmarks/c/recursive/Addition01-2.c [2020-12-09 14:06:55,915 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_66c31d33-6a17-432f-abd9-4d78bd85454c/bin/utaipan/data/6c7663cfb/ea7052132acd4736bd08f685374e730d/FLAG761f88899 [2020-12-09 14:06:56,285 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 14:06:56,285 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_66c31d33-6a17-432f-abd9-4d78bd85454c/sv-benchmarks/c/recursive/Addition01-2.c [2020-12-09 14:06:56,290 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_66c31d33-6a17-432f-abd9-4d78bd85454c/bin/utaipan/data/6c7663cfb/ea7052132acd4736bd08f685374e730d/FLAG761f88899 [2020-12-09 14:06:56,299 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_66c31d33-6a17-432f-abd9-4d78bd85454c/bin/utaipan/data/6c7663cfb/ea7052132acd4736bd08f685374e730d [2020-12-09 14:06:56,301 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 14:06:56,302 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 14:06:56,303 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 14:06:56,303 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 14:06:56,306 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 14:06:56,307 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 02:06:56" (1/1) ... [2020-12-09 14:06:56,308 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c250710 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:06:56, skipping insertion in model container [2020-12-09 14:06:56,309 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 02:06:56" (1/1) ... [2020-12-09 14:06:56,314 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 14:06:56,326 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 14:06:56,425 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_66c31d33-6a17-432f-abd9-4d78bd85454c/sv-benchmarks/c/recursive/Addition01-2.c[1126,1139] [2020-12-09 14:06:56,428 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 14:06:56,435 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 14:06:56,446 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_66c31d33-6a17-432f-abd9-4d78bd85454c/sv-benchmarks/c/recursive/Addition01-2.c[1126,1139] [2020-12-09 14:06:56,446 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 14:06:56,456 INFO L208 MainTranslator]: Completed translation [2020-12-09 14:06:56,457 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:06:56 WrapperNode [2020-12-09 14:06:56,457 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 14:06:56,457 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 14:06:56,458 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 14:06:56,458 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 14:06:56,464 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:06:56" (1/1) ... [2020-12-09 14:06:56,471 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:06:56" (1/1) ... [2020-12-09 14:06:56,486 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 14:06:56,486 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 14:06:56,487 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 14:06:56,487 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 14:06:56,494 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:06:56" (1/1) ... [2020-12-09 14:06:56,495 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:06:56" (1/1) ... [2020-12-09 14:06:56,496 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:06:56" (1/1) ... [2020-12-09 14:06:56,497 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:06:56" (1/1) ... [2020-12-09 14:06:56,500 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:06:56" (1/1) ... [2020-12-09 14:06:56,502 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:06:56" (1/1) ... [2020-12-09 14:06:56,503 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:06:56" (1/1) ... [2020-12-09 14:06:56,504 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 14:06:56,505 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 14:06:56,505 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 14:06:56,506 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 14:06:56,506 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:06:56" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_66c31d33-6a17-432f-abd9-4d78bd85454c/bin/utaipan/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 [2020-12-09 14:06:56,562 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 14:06:56,563 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 14:06:56,563 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-09 14:06:56,563 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 14:06:56,563 INFO L130 BoogieDeclarations]: Found specification of procedure addition [2020-12-09 14:06:56,563 INFO L138 BoogieDeclarations]: Found implementation of procedure addition [2020-12-09 14:06:56,728 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 14:06:56,728 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2020-12-09 14:06:56,730 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 02:06:56 BoogieIcfgContainer [2020-12-09 14:06:56,731 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 14:06:56,733 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 14:06:56,733 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 14:06:56,736 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 14:06:56,736 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 02:06:56" (1/3) ... [2020-12-09 14:06:56,737 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2dafee82 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 02:06:56, skipping insertion in model container [2020-12-09 14:06:56,737 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:06:56" (2/3) ... [2020-12-09 14:06:56,738 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2dafee82 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 02:06:56, skipping insertion in model container [2020-12-09 14:06:56,738 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 02:06:56" (3/3) ... [2020-12-09 14:06:56,739 INFO L111 eAbstractionObserver]: Analyzing ICFG Addition01-2.c [2020-12-09 14:06:56,752 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 14:06:56,755 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-09 14:06:56,766 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-09 14:06:56,788 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 14:06:56,789 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 14:06:56,789 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 14:06:56,789 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 14:06:56,789 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 14:06:56,789 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 14:06:56,789 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 14:06:56,789 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 14:06:56,803 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2020-12-09 14:06:56,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-09 14:06:56,809 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 14:06:56,809 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 14:06:56,810 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 14:06:56,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 14:06:56,815 INFO L82 PathProgramCache]: Analyzing trace with hash 731430453, now seen corresponding path program 1 times [2020-12-09 14:06:56,824 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 14:06:56,825 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890592550] [2020-12-09 14:06:56,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 14:06:56,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 14:06:57,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 14:06:57,057 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890592550] [2020-12-09 14:06:57,057 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 14:06:57,057 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-09 14:06:57,058 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696301344] [2020-12-09 14:06:57,062 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-09 14:06:57,062 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 14:06:57,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-09 14:06:57,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-09 14:06:57,075 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 6 states. [2020-12-09 14:06:57,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 14:06:57,194 INFO L93 Difference]: Finished difference Result 30 states and 38 transitions. [2020-12-09 14:06:57,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-09 14:06:57,195 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2020-12-09 14:06:57,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 14:06:57,201 INFO L225 Difference]: With dead ends: 30 [2020-12-09 14:06:57,201 INFO L226 Difference]: Without dead ends: 20 [2020-12-09 14:06:57,204 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-12-09 14:06:57,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2020-12-09 14:06:57,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2020-12-09 14:06:57,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-12-09 14:06:57,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 25 transitions. [2020-12-09 14:06:57,234 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 25 transitions. Word has length 11 [2020-12-09 14:06:57,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 14:06:57,234 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 25 transitions. [2020-12-09 14:06:57,234 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-09 14:06:57,234 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 25 transitions. [2020-12-09 14:06:57,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-09 14:06:57,236 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 14:06:57,236 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 14:06:57,236 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-09 14:06:57,236 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 14:06:57,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 14:06:57,237 INFO L82 PathProgramCache]: Analyzing trace with hash -1703056242, now seen corresponding path program 1 times [2020-12-09 14:06:57,237 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 14:06:57,238 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968218779] [2020-12-09 14:06:57,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 14:06:57,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 14:06:57,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 14:06:57,310 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968218779] [2020-12-09 14:06:57,310 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 14:06:57,310 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-09 14:06:57,310 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366156869] [2020-12-09 14:06:57,311 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-09 14:06:57,311 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 14:06:57,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-09 14:06:57,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-12-09 14:06:57,312 INFO L87 Difference]: Start difference. First operand 20 states and 25 transitions. Second operand 7 states. [2020-12-09 14:06:57,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 14:06:57,362 INFO L93 Difference]: Finished difference Result 31 states and 39 transitions. [2020-12-09 14:06:57,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-09 14:06:57,363 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 13 [2020-12-09 14:06:57,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 14:06:57,363 INFO L225 Difference]: With dead ends: 31 [2020-12-09 14:06:57,363 INFO L226 Difference]: Without dead ends: 17 [2020-12-09 14:06:57,365 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-12-09 14:06:57,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2020-12-09 14:06:57,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2020-12-09 14:06:57,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-12-09 14:06:57,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2020-12-09 14:06:57,369 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 13 [2020-12-09 14:06:57,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 14:06:57,369 INFO L481 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2020-12-09 14:06:57,369 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-09 14:06:57,369 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2020-12-09 14:06:57,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-09 14:06:57,370 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 14:06:57,370 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 14:06:57,370 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-09 14:06:57,371 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 14:06:57,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 14:06:57,371 INFO L82 PathProgramCache]: Analyzing trace with hash 280210265, now seen corresponding path program 1 times [2020-12-09 14:06:57,372 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 14:06:57,372 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406463198] [2020-12-09 14:06:57,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 14:06:57,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 14:06:57,491 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-09 14:06:57,491 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406463198] [2020-12-09 14:06:57,492 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [423791863] [2020-12-09 14:06:57,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_66c31d33-6a17-432f-abd9-4d78bd85454c/bin/utaipan/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 [2020-12-09 14:06:57,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 14:06:57,522 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 27 conjunts are in the unsatisfiable core [2020-12-09 14:06:57,527 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 14:06:57,721 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-09 14:06:57,721 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 14:06:57,919 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-12-09 14:06:57,923 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-12-09 14:06:57,925 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-12-09 14:06:57,929 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-12-09 14:06:58,002 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-09 14:06:58,002 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [210417140] [2020-12-09 14:06:58,018 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2020-12-09 14:06:58,018 INFO L166 IcfgInterpreter]: Building call graph [2020-12-09 14:06:58,022 FATAL L? ?]: Ignoring exception! java.lang.IllegalArgumentException: Recursive programs are not supported. at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.topsortRelevant(CallGraph.java:132) at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.(CallGraph.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.(IcfgInterpreter.java:92) at de.uni_freiburg.informatik.ultimate.plugins.sifa.SifaBuilder.construct(SifaBuilder.java:94) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:98) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:289) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:189) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:179) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:84) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:74) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:511) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:438) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:372) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:138) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:345) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:198) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2020-12-09 14:06:58,023 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2020-12-09 14:06:58,023 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 20 [2020-12-09 14:06:58,024 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119758578] [2020-12-09 14:06:58,024 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-12-09 14:06:58,024 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 14:06:58,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-12-09 14:06:58,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=321, Unknown=0, NotChecked=0, Total=380 [2020-12-09 14:06:58,025 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand 20 states. [2020-12-09 14:06:58,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 14:06:58,184 INFO L93 Difference]: Finished difference Result 22 states and 24 transitions. [2020-12-09 14:06:58,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-12-09 14:06:58,185 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 18 [2020-12-09 14:06:58,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 14:06:58,185 INFO L225 Difference]: With dead ends: 22 [2020-12-09 14:06:58,185 INFO L226 Difference]: Without dead ends: 0 [2020-12-09 14:06:58,186 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 21 SyntacticMatches, 5 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=117, Invalid=483, Unknown=0, NotChecked=0, Total=600 [2020-12-09 14:06:58,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-09 14:06:58,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-09 14:06:58,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-09 14:06:58,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-09 14:06:58,187 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2020-12-09 14:06:58,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 14:06:58,187 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-09 14:06:58,187 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-12-09 14:06:58,187 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-09 14:06:58,187 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-09 14:06:58,388 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-12-09 14:06:58,393 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-09 14:06:58,498 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-12-09 14:06:58,498 INFO L262 CegarLoopResult]: For program point L30(lines 30 34) no Hoare annotation was computed. [2020-12-09 14:06:58,498 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-12-09 14:06:58,498 INFO L265 CegarLoopResult]: At program point L28(lines 28 47) the Hoare annotation is: true [2020-12-09 14:06:58,499 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 45) no Hoare annotation was computed. [2020-12-09 14:06:58,501 INFO L262 CegarLoopResult]: For program point L45(line 45) no Hoare annotation was computed. [2020-12-09 14:06:58,501 INFO L262 CegarLoopResult]: For program point L42(lines 42 46) no Hoare annotation was computed. [2020-12-09 14:06:58,501 INFO L258 CegarLoopResult]: At program point L41(line 41) the Hoare annotation is: (or (= ULTIMATE.start_main_~n~0 0) (< 0 ULTIMATE.start_main_~n~0)) [2020-12-09 14:06:58,502 INFO L262 CegarLoopResult]: For program point L41-1(line 41) no Hoare annotation was computed. [2020-12-09 14:06:58,502 INFO L262 CegarLoopResult]: For program point L36(lines 36 40) no Hoare annotation was computed. [2020-12-09 14:06:58,502 INFO L258 CegarLoopResult]: At program point L23(line 23) the Hoare annotation is: (and (<= addition_~m |addition_#in~m|) (<= addition_~n 0) (= |addition_#in~n| addition_~n) (<= |addition_#in~m| addition_~m) (not (= |addition_#in~n| 0))) [2020-12-09 14:06:58,502 INFO L262 CegarLoopResult]: For program point L22(lines 22 24) no Hoare annotation was computed. [2020-12-09 14:06:58,502 INFO L262 CegarLoopResult]: For program point L23-1(line 23) no Hoare annotation was computed. [2020-12-09 14:06:58,502 INFO L262 CegarLoopResult]: For program point additionFINAL(lines 15 25) no Hoare annotation was computed. [2020-12-09 14:06:58,502 INFO L258 CegarLoopResult]: At program point L20(line 20) the Hoare annotation is: (and (< 0 addition_~n) (<= addition_~m |addition_#in~m|) (= |addition_#in~n| addition_~n) (<= |addition_#in~m| addition_~m)) [2020-12-09 14:06:58,502 INFO L262 CegarLoopResult]: For program point L19(lines 19 21) no Hoare annotation was computed. [2020-12-09 14:06:58,502 INFO L262 CegarLoopResult]: For program point L20-1(line 20) no Hoare annotation was computed. [2020-12-09 14:06:58,502 INFO L262 CegarLoopResult]: For program point L16(lines 16 18) no Hoare annotation was computed. [2020-12-09 14:06:58,503 INFO L265 CegarLoopResult]: At program point additionENTRY(lines 15 25) the Hoare annotation is: true [2020-12-09 14:06:58,503 INFO L262 CegarLoopResult]: For program point additionEXIT(lines 15 25) no Hoare annotation was computed. [2020-12-09 14:06:58,508 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 02:06:58 BoogieIcfgContainer [2020-12-09 14:06:58,508 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 14:06:58,509 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 14:06:58,509 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 14:06:58,509 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 14:06:58,509 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 02:06:56" (3/4) ... [2020-12-09 14:06:58,511 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-09 14:06:58,515 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure addition [2020-12-09 14:06:58,517 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2020-12-09 14:06:58,517 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2020-12-09 14:06:58,518 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-09 14:06:58,518 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-09 14:06:58,544 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_66c31d33-6a17-432f-abd9-4d78bd85454c/bin/utaipan/witness.graphml [2020-12-09 14:06:58,544 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 14:06:58,545 INFO L168 Benchmark]: Toolchain (without parser) took 2242.74 ms. Allocated memory was 113.2 MB in the beginning and 136.3 MB in the end (delta: 23.1 MB). Free memory was 90.1 MB in the beginning and 110.0 MB in the end (delta: -20.0 MB). Peak memory consumption was 3.5 MB. Max. memory is 16.1 GB. [2020-12-09 14:06:58,546 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 71.3 MB. Free memory is still 42.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 14:06:58,546 INFO L168 Benchmark]: CACSL2BoogieTranslator took 154.29 ms. Allocated memory is still 113.2 MB. Free memory was 89.7 MB in the beginning and 80.2 MB in the end (delta: 9.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-12-09 14:06:58,546 INFO L168 Benchmark]: Boogie Procedure Inliner took 28.27 ms. Allocated memory is still 113.2 MB. Free memory was 80.2 MB in the beginning and 78.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 14:06:58,547 INFO L168 Benchmark]: Boogie Preprocessor took 18.14 ms. Allocated memory is still 113.2 MB. Free memory was 78.8 MB in the beginning and 78.0 MB in the end (delta: 816.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 14:06:58,547 INFO L168 Benchmark]: RCFGBuilder took 225.57 ms. Allocated memory is still 113.2 MB. Free memory was 78.0 MB in the beginning and 63.4 MB in the end (delta: 14.6 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-12-09 14:06:58,548 INFO L168 Benchmark]: TraceAbstraction took 1775.85 ms. Allocated memory was 113.2 MB in the beginning and 136.3 MB in the end (delta: 23.1 MB). Free memory was 62.8 MB in the beginning and 113.2 MB in the end (delta: -50.4 MB). Peak memory consumption was 39.1 MB. Max. memory is 16.1 GB. [2020-12-09 14:06:58,548 INFO L168 Benchmark]: Witness Printer took 35.45 ms. Allocated memory is still 136.3 MB. Free memory was 113.2 MB in the beginning and 110.0 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 14:06:58,550 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 71.3 MB. Free memory is still 42.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 154.29 ms. Allocated memory is still 113.2 MB. Free memory was 89.7 MB in the beginning and 80.2 MB in the end (delta: 9.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 28.27 ms. Allocated memory is still 113.2 MB. Free memory was 80.2 MB in the beginning and 78.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 18.14 ms. Allocated memory is still 113.2 MB. Free memory was 78.8 MB in the beginning and 78.0 MB in the end (delta: 816.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 225.57 ms. Allocated memory is still 113.2 MB. Free memory was 78.0 MB in the beginning and 63.4 MB in the end (delta: 14.6 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1775.85 ms. Allocated memory was 113.2 MB in the beginning and 136.3 MB in the end (delta: 23.1 MB). Free memory was 62.8 MB in the beginning and 113.2 MB in the end (delta: -50.4 MB). Peak memory consumption was 39.1 MB. Max. memory is 16.1 GB. * Witness Printer took 35.45 ms. Allocated memory is still 136.3 MB. Free memory was 113.2 MB in the beginning and 110.0 MB in the end (delta: 3.1 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: 45]: 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: 28]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 20 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.6s, OverallIterations: 3, TraceHistogramMax: 2, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 38 SDtfs, 47 SDslu, 101 SDs, 0 SdLazy, 218 SolverSat, 24 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 67 GetRequests, 29 SyntacticMatches, 5 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred 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, 5 LocationsWithAnnotation, 11 PreInvPairs, 13 NumberOfFragments, 39 HoareAnnotationTreeSize, 11 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 4 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 60 NumberOfCodeBlocks, 60 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 73 ConstructedInterpolants, 0 QuantifiedInterpolants, 8352 SizeOfPredicates, 9 NumberOfNonLiveVariables, 83 ConjunctsInSsa, 27 ConjunctsInUnsatCore, 5 InterpolantComputations, 2 PerfectInterpolantSequences, 3/12 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...