./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-zilu/benchmark04_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-vcloud-master/worker/run_dir_80f2451c-dc5f-4522-bd29-f52d9814f0e4/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_80f2451c-dc5f-4522-bd29-f52d9814f0e4/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_80f2451c-dc5f-4522-bd29-f52d9814f0e4/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_80f2451c-dc5f-4522-bd29-f52d9814f0e4/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-zilu/benchmark04_conjunctive.i -s /tmp/vcloud-vcloud-master/worker/run_dir_80f2451c-dc5f-4522-bd29-f52d9814f0e4/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_80f2451c-dc5f-4522-bd29-f52d9814f0e4/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 6e3d50e5c95506905bfc503f1fcedc0356db6a24 ...................................................................................................................................................................................................................................................................................................................................................................................................... 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 20:23:25,613 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 20:23:25,622 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 20:23:25,669 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 20:23:25,670 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 20:23:25,671 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 20:23:25,672 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 20:23:25,675 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 20:23:25,677 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 20:23:25,678 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 20:23:25,679 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 20:23:25,680 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 20:23:25,681 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 20:23:25,682 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 20:23:25,683 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 20:23:25,684 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 20:23:25,685 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 20:23:25,686 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 20:23:25,688 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 20:23:25,690 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 20:23:25,692 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 20:23:25,693 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 20:23:25,694 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 20:23:25,695 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 20:23:25,698 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 20:23:25,699 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 20:23:25,699 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 20:23:25,700 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 20:23:25,700 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 20:23:25,701 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 20:23:25,702 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 20:23:25,702 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 20:23:25,703 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 20:23:25,704 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 20:23:25,705 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 20:23:25,705 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 20:23:25,706 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 20:23:25,706 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 20:23:25,706 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 20:23:25,707 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 20:23:25,707 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 20:23:25,708 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_80f2451c-dc5f-4522-bd29-f52d9814f0e4/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-12-09 20:23:25,729 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 20:23:25,730 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 20:23:25,730 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 20:23:25,731 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 20:23:25,731 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 20:23:25,731 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 20:23:25,731 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 20:23:25,731 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 20:23:25,731 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 20:23:25,732 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 20:23:25,732 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 20:23:25,732 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 20:23:25,732 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 20:23:25,732 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 20:23:25,733 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 20:23:25,733 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 20:23:25,733 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 20:23:25,734 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 20:23:25,734 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 20:23:25,734 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 20:23:25,734 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 20:23:25,734 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 20:23:25,734 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 20:23:25,735 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 20:23:25,735 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 20:23:25,735 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 20:23:25,735 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 20:23:25,735 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 20:23:25,736 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 20:23:25,736 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 20:23:25,736 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 20:23:25,736 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 20:23:25,736 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 20:23:25,736 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 20:23:25,737 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 20:23:25,737 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 20:23:25,737 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 20:23:25,737 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 20:23:25,737 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 20:23:25,737 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_80f2451c-dc5f-4522-bd29-f52d9814f0e4/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_80f2451c-dc5f-4522-bd29-f52d9814f0e4/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6e3d50e5c95506905bfc503f1fcedc0356db6a24 [2020-12-09 20:23:25,913 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 20:23:25,931 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 20:23:25,933 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 20:23:25,933 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 20:23:25,934 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 20:23:25,935 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_80f2451c-dc5f-4522-bd29-f52d9814f0e4/bin/utaipan/../../sv-benchmarks/c/loop-zilu/benchmark04_conjunctive.i [2020-12-09 20:23:25,975 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_80f2451c-dc5f-4522-bd29-f52d9814f0e4/bin/utaipan/data/e59f5ce56/3cdc1354d5524385ba43f7d2bf7f0e97/FLAG19e86835c [2020-12-09 20:23:26,334 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 20:23:26,334 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_80f2451c-dc5f-4522-bd29-f52d9814f0e4/sv-benchmarks/c/loop-zilu/benchmark04_conjunctive.i [2020-12-09 20:23:26,340 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_80f2451c-dc5f-4522-bd29-f52d9814f0e4/bin/utaipan/data/e59f5ce56/3cdc1354d5524385ba43f7d2bf7f0e97/FLAG19e86835c [2020-12-09 20:23:26,349 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_80f2451c-dc5f-4522-bd29-f52d9814f0e4/bin/utaipan/data/e59f5ce56/3cdc1354d5524385ba43f7d2bf7f0e97 [2020-12-09 20:23:26,351 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 20:23:26,352 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 20:23:26,353 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 20:23:26,353 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 20:23:26,356 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 20:23:26,357 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 08:23:26" (1/1) ... [2020-12-09 20:23:26,359 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58065b63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:23:26, skipping insertion in model container [2020-12-09 20:23:26,359 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 08:23:26" (1/1) ... [2020-12-09 20:23:26,364 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 20:23:26,377 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 20:23:26,482 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_80f2451c-dc5f-4522-bd29-f52d9814f0e4/sv-benchmarks/c/loop-zilu/benchmark04_conjunctive.i[873,886] [2020-12-09 20:23:26,489 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 20:23:26,496 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 20:23:26,504 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_80f2451c-dc5f-4522-bd29-f52d9814f0e4/sv-benchmarks/c/loop-zilu/benchmark04_conjunctive.i[873,886] [2020-12-09 20:23:26,506 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 20:23:26,516 INFO L208 MainTranslator]: Completed translation [2020-12-09 20:23:26,516 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:23:26 WrapperNode [2020-12-09 20:23:26,516 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 20:23:26,517 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 20:23:26,517 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 20:23:26,517 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 20:23:26,523 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:23:26" (1/1) ... [2020-12-09 20:23:26,527 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:23:26" (1/1) ... [2020-12-09 20:23:26,539 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 20:23:26,539 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 20:23:26,539 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 20:23:26,540 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 20:23:26,545 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:23:26" (1/1) ... [2020-12-09 20:23:26,545 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:23:26" (1/1) ... [2020-12-09 20:23:26,546 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:23:26" (1/1) ... [2020-12-09 20:23:26,546 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:23:26" (1/1) ... [2020-12-09 20:23:26,548 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:23:26" (1/1) ... [2020-12-09 20:23:26,551 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:23:26" (1/1) ... [2020-12-09 20:23:26,552 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:23:26" (1/1) ... [2020-12-09 20:23:26,553 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 20:23:26,553 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 20:23:26,554 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 20:23:26,554 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 20:23:26,554 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:23:26" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_80f2451c-dc5f-4522-bd29-f52d9814f0e4/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 20:23:26,609 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-09 20:23:26,609 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 20:23:26,609 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 20:23:26,609 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 20:23:26,800 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 20:23:26,800 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2020-12-09 20:23:26,802 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 08:23:26 BoogieIcfgContainer [2020-12-09 20:23:26,803 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 20:23:26,804 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 20:23:26,804 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 20:23:26,808 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 20:23:26,808 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 08:23:26" (1/3) ... [2020-12-09 20:23:26,809 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@704d15db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 08:23:26, skipping insertion in model container [2020-12-09 20:23:26,809 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:23:26" (2/3) ... [2020-12-09 20:23:26,810 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@704d15db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 08:23:26, skipping insertion in model container [2020-12-09 20:23:26,810 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 08:23:26" (3/3) ... [2020-12-09 20:23:26,811 INFO L111 eAbstractionObserver]: Analyzing ICFG benchmark04_conjunctive.i [2020-12-09 20:23:26,825 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 20:23:26,828 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-09 20:23:26,838 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-09 20:23:26,857 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 20:23:26,857 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 20:23:26,857 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 20:23:26,858 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 20:23:26,858 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 20:23:26,858 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 20:23:26,858 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 20:23:26,858 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 20:23:26,867 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states. [2020-12-09 20:23:26,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-12-09 20:23:26,871 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 20:23:26,871 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-12-09 20:23:26,871 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 20:23:26,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 20:23:26,876 INFO L82 PathProgramCache]: Analyzing trace with hash 59349214, now seen corresponding path program 1 times [2020-12-09 20:23:26,882 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 20:23:26,883 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664019221] [2020-12-09 20:23:26,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 20:23:26,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 20:23:27,016 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 20:23:27,017 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664019221] [2020-12-09 20:23:27,018 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 20:23:27,018 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 20:23:27,019 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525572780] [2020-12-09 20:23:27,022 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 20:23:27,022 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 20:23:27,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 20:23:27,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 20:23:27,035 INFO L87 Difference]: Start difference. First operand 9 states. Second operand 3 states. [2020-12-09 20:23:27,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 20:23:27,059 INFO L93 Difference]: Finished difference Result 16 states and 19 transitions. [2020-12-09 20:23:27,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 20:23:27,061 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2020-12-09 20:23:27,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 20:23:27,069 INFO L225 Difference]: With dead ends: 16 [2020-12-09 20:23:27,069 INFO L226 Difference]: Without dead ends: 7 [2020-12-09 20:23:27,072 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 [2020-12-09 20:23:27,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2020-12-09 20:23:27,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2020-12-09 20:23:27,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-12-09 20:23:27,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2020-12-09 20:23:27,103 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 5 [2020-12-09 20:23:27,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 20:23:27,103 INFO L481 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2020-12-09 20:23:27,103 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 20:23:27,104 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2020-12-09 20:23:27,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-09 20:23:27,104 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 20:23:27,104 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-12-09 20:23:27,104 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-09 20:23:27,105 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 20:23:27,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 20:23:27,106 INFO L82 PathProgramCache]: Analyzing trace with hash 1839242300, now seen corresponding path program 1 times [2020-12-09 20:23:27,106 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 20:23:27,106 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921448745] [2020-12-09 20:23:27,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 20:23:27,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 20:23:27,166 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 20:23:27,166 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921448745] [2020-12-09 20:23:27,166 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1646973676] [2020-12-09 20:23:27,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_80f2451c-dc5f-4522-bd29-f52d9814f0e4/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 20:23:27,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 20:23:27,206 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 6 conjunts are in the unsatisfiable core [2020-12-09 20:23:27,209 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 20:23:27,263 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 20:23:27,264 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 20:23:27,283 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-12-09 20:23:27,300 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 20:23:27,300 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [156809073] [2020-12-09 20:23:27,315 INFO L159 IcfgInterpreter]: Started Sifa with 6 locations of interest [2020-12-09 20:23:27,315 INFO L166 IcfgInterpreter]: Building call graph [2020-12-09 20:23:27,318 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-09 20:23:27,321 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-09 20:23:27,322 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-09 20:23:27,627 INFO L180 IcfgInterpreter]: Interpretation finished [2020-12-09 20:23:27,879 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 20:23:27,879 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2020-12-09 20:23:27,879 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 6 [2020-12-09 20:23:27,880 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31750132] [2020-12-09 20:23:27,880 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-09 20:23:27,881 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 20:23:27,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-09 20:23:27,882 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-12-09 20:23:27,882 INFO L87 Difference]: Start difference. First operand 7 states and 7 transitions. Second operand 6 states. [2020-12-09 20:23:27,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 20:23:27,900 INFO L93 Difference]: Finished difference Result 11 states and 11 transitions. [2020-12-09 20:23:27,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 20:23:27,901 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 6 [2020-12-09 20:23:27,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 20:23:27,901 INFO L225 Difference]: With dead ends: 11 [2020-12-09 20:23:27,901 INFO L226 Difference]: Without dead ends: 8 [2020-12-09 20:23:27,902 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2020-12-09 20:23:27,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2020-12-09 20:23:27,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2020-12-09 20:23:27,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-12-09 20:23:27,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2020-12-09 20:23:27,904 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 6 [2020-12-09 20:23:27,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 20:23:27,904 INFO L481 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2020-12-09 20:23:27,904 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-09 20:23:27,904 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2020-12-09 20:23:27,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-09 20:23:27,904 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 20:23:27,904 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2020-12-09 20:23:28,105 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-12-09 20:23:28,106 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 20:23:28,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 20:23:28,108 INFO L82 PathProgramCache]: Analyzing trace with hash 1181353118, now seen corresponding path program 2 times [2020-12-09 20:23:28,109 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 20:23:28,110 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436938554] [2020-12-09 20:23:28,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 20:23:28,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 20:23:28,244 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-09 20:23:28,244 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436938554] [2020-12-09 20:23:28,245 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [242500860] [2020-12-09 20:23:28,245 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_80f2451c-dc5f-4522-bd29-f52d9814f0e4/bin/utaipan/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 [2020-12-09 20:23:28,284 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-12-09 20:23:28,285 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-09 20:23:28,285 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 12 conjunts are in the unsatisfiable core [2020-12-09 20:23:28,286 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 20:23:28,336 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 20:23:28,336 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 20:23:28,374 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 20:23:28,375 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2013205799] [2020-12-09 20:23:28,377 INFO L159 IcfgInterpreter]: Started Sifa with 6 locations of interest [2020-12-09 20:23:28,377 INFO L166 IcfgInterpreter]: Building call graph [2020-12-09 20:23:28,378 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-09 20:23:28,378 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-09 20:23:28,378 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-09 20:23:28,565 INFO L180 IcfgInterpreter]: Interpretation finished [2020-12-09 20:23:28,878 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 20:23:28,878 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2020-12-09 20:23:28,878 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 6] total 10 [2020-12-09 20:23:28,879 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979828855] [2020-12-09 20:23:28,879 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-09 20:23:28,879 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 20:23:28,880 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-09 20:23:28,880 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2020-12-09 20:23:28,880 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand 10 states. [2020-12-09 20:23:28,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 20:23:28,935 INFO L93 Difference]: Finished difference Result 8 states and 8 transitions. [2020-12-09 20:23:28,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-09 20:23:28,935 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 7 [2020-12-09 20:23:28,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 20:23:28,935 INFO L225 Difference]: With dead ends: 8 [2020-12-09 20:23:28,935 INFO L226 Difference]: Without dead ends: 0 [2020-12-09 20:23:28,936 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=72, Invalid=234, Unknown=0, NotChecked=0, Total=306 [2020-12-09 20:23:28,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-09 20:23:28,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-09 20:23:28,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-09 20:23:28,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-09 20:23:28,936 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 7 [2020-12-09 20:23:28,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 20:23:28,937 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-09 20:23:28,937 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-09 20:23:28,937 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-09 20:23:28,937 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-09 20:23:29,137 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2020-12-09 20:23:29,139 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-09 20:23:29,158 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-12-09 20:23:29,158 INFO L265 CegarLoopResult]: At program point L29(lines 19 30) the Hoare annotation is: true [2020-12-09 20:23:29,158 INFO L262 CegarLoopResult]: For program point L23(line 23) no Hoare annotation was computed. [2020-12-09 20:23:29,158 INFO L262 CegarLoopResult]: For program point L15(lines 15 17) no Hoare annotation was computed. [2020-12-09 20:23:29,158 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-12-09 20:23:29,159 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 16) no Hoare annotation was computed. [2020-12-09 20:23:29,159 INFO L258 CegarLoopResult]: At program point L24-2(lines 24 27) the Hoare annotation is: (and (<= ULTIMATE.start_main_~n~0 (+ ULTIMATE.start_main_~k~0 ULTIMATE.start_main_~j~0)) (<= 0 ULTIMATE.start_main_~k~0)) [2020-12-09 20:23:29,159 INFO L262 CegarLoopResult]: For program point L16(line 16) no Hoare annotation was computed. [2020-12-09 20:23:29,159 INFO L262 CegarLoopResult]: For program point L14(lines 14 18) no Hoare annotation was computed. [2020-12-09 20:23:29,168 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 08:23:29 BoogieIcfgContainer [2020-12-09 20:23:29,168 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 20:23:29,169 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 20:23:29,169 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 20:23:29,169 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 20:23:29,169 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 08:23:26" (3/4) ... [2020-12-09 20:23:29,171 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-09 20:23:29,177 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2020-12-09 20:23:29,177 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2020-12-09 20:23:29,177 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-09 20:23:29,177 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-09 20:23:29,200 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_80f2451c-dc5f-4522-bd29-f52d9814f0e4/bin/utaipan/witness.graphml [2020-12-09 20:23:29,200 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 20:23:29,201 INFO L168 Benchmark]: Toolchain (without parser) took 2848.86 ms. Allocated memory was 96.5 MB in the beginning and 119.5 MB in the end (delta: 23.1 MB). Free memory was 57.9 MB in the beginning and 76.8 MB in the end (delta: -19.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 16.1 GB. [2020-12-09 20:23:29,202 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 96.5 MB. Free memory was 74.0 MB in the beginning and 73.9 MB in the end (delta: 66.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 20:23:29,202 INFO L168 Benchmark]: CACSL2BoogieTranslator took 163.41 ms. Allocated memory is still 96.5 MB. Free memory was 57.7 MB in the beginning and 72.6 MB in the end (delta: -14.9 MB). Peak memory consumption was 8.1 MB. Max. memory is 16.1 GB. [2020-12-09 20:23:29,202 INFO L168 Benchmark]: Boogie Procedure Inliner took 21.87 ms. Allocated memory is still 96.5 MB. Free memory was 72.6 MB in the beginning and 71.1 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 20:23:29,203 INFO L168 Benchmark]: Boogie Preprocessor took 13.52 ms. Allocated memory is still 96.5 MB. Free memory was 71.1 MB in the beginning and 70.1 MB in the end (delta: 985.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 20:23:29,203 INFO L168 Benchmark]: RCFGBuilder took 249.26 ms. Allocated memory is still 96.5 MB. Free memory was 70.1 MB in the beginning and 56.5 MB in the end (delta: 13.6 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-12-09 20:23:29,204 INFO L168 Benchmark]: TraceAbstraction took 2364.27 ms. Allocated memory was 96.5 MB in the beginning and 119.5 MB in the end (delta: 23.1 MB). Free memory was 56.0 MB in the beginning and 78.9 MB in the end (delta: -23.0 MB). Peak memory consumption was 1.1 MB. Max. memory is 16.1 GB. [2020-12-09 20:23:29,204 INFO L168 Benchmark]: Witness Printer took 31.61 ms. Allocated memory is still 119.5 MB. Free memory was 78.9 MB in the beginning and 76.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 20:23:29,206 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 96.5 MB. Free memory was 74.0 MB in the beginning and 73.9 MB in the end (delta: 66.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 163.41 ms. Allocated memory is still 96.5 MB. Free memory was 57.7 MB in the beginning and 72.6 MB in the end (delta: -14.9 MB). Peak memory consumption was 8.1 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 21.87 ms. Allocated memory is still 96.5 MB. Free memory was 72.6 MB in the beginning and 71.1 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 13.52 ms. Allocated memory is still 96.5 MB. Free memory was 71.1 MB in the beginning and 70.1 MB in the end (delta: 985.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 249.26 ms. Allocated memory is still 96.5 MB. Free memory was 70.1 MB in the beginning and 56.5 MB in the end (delta: 13.6 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2364.27 ms. Allocated memory was 96.5 MB in the beginning and 119.5 MB in the end (delta: 23.1 MB). Free memory was 56.0 MB in the beginning and 78.9 MB in the end (delta: -23.0 MB). Peak memory consumption was 1.1 MB. Max. memory is 16.1 GB. * Witness Printer took 31.61 ms. Allocated memory is still 119.5 MB. Free memory was 78.9 MB in the beginning and 76.8 MB in the end (delta: 2.1 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: 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: n <= k + j && 0 <= k - 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: 2.2s, OverallIterations: 3, TraceHistogramMax: 2, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 15 SDtfs, 3 SDslu, 14 SDs, 0 SdLazy, 31 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 54 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.7s 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, 5 NumberOfFragments, 10 HoareAnnotationTreeSize, 2 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 31 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 31 NumberOfCodeBlocks, 31 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 37 ConstructedInterpolants, 0 QuantifiedInterpolants, 622 SizeOfPredicates, 11 NumberOfNonLiveVariables, 101 ConjunctsInSsa, 18 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...