./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-zilu/benchmark19_conjunctive.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e943c265 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8ace54a-a0b0-41cc-b5a4-287d5a2f4893/bin/utaipan-tZwUujhuQw/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8ace54a-a0b0-41cc-b5a4-287d5a2f4893/bin/utaipan-tZwUujhuQw/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8ace54a-a0b0-41cc-b5a4-287d5a2f4893/bin/utaipan-tZwUujhuQw/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8ace54a-a0b0-41cc-b5a4-287d5a2f4893/bin/utaipan-tZwUujhuQw/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-zilu/benchmark19_conjunctive.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8ace54a-a0b0-41cc-b5a4-287d5a2f4893/bin/utaipan-tZwUujhuQw/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8ace54a-a0b0-41cc-b5a4-287d5a2f4893/bin/utaipan-tZwUujhuQw --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 2dd3364bf5e5337e36d5137f60eb9fb66edcf0c750f78ddc701b6a530fbd02a5 ...................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-e943c26 [2021-10-20 06:03:35,995 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-20 06:03:35,997 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-20 06:03:36,031 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-20 06:03:36,031 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-20 06:03:36,033 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-20 06:03:36,034 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-20 06:03:36,038 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-20 06:03:36,043 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-20 06:03:36,049 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-20 06:03:36,050 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-20 06:03:36,054 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-20 06:03:36,054 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-20 06:03:36,056 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-20 06:03:36,059 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-20 06:03:36,061 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-20 06:03:36,063 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-20 06:03:36,064 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-20 06:03:36,068 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-20 06:03:36,077 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-20 06:03:36,078 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-20 06:03:36,080 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-20 06:03:36,083 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-20 06:03:36,084 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-20 06:03:36,096 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-20 06:03:36,097 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-20 06:03:36,097 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-20 06:03:36,099 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-20 06:03:36,100 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-20 06:03:36,101 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-20 06:03:36,102 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-20 06:03:36,102 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-20 06:03:36,104 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-20 06:03:36,105 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-20 06:03:36,107 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-20 06:03:36,107 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-20 06:03:36,107 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-20 06:03:36,108 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-20 06:03:36,108 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-20 06:03:36,109 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-20 06:03:36,109 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-20 06:03:36,110 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8ace54a-a0b0-41cc-b5a4-287d5a2f4893/bin/utaipan-tZwUujhuQw/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-20 06:03:36,154 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-20 06:03:36,154 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-20 06:03:36,155 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-20 06:03:36,156 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-20 06:03:36,156 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-20 06:03:36,156 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-20 06:03:36,156 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-20 06:03:36,156 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-20 06:03:36,162 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-20 06:03:36,163 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-20 06:03:36,164 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-20 06:03:36,164 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-20 06:03:36,164 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-20 06:03:36,164 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-20 06:03:36,164 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-20 06:03:36,165 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-20 06:03:36,165 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-20 06:03:36,166 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-20 06:03:36,166 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-20 06:03:36,166 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-20 06:03:36,166 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-20 06:03:36,166 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-20 06:03:36,167 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-20 06:03:36,167 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-20 06:03:36,167 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-20 06:03:36,167 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-20 06:03:36,167 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-20 06:03:36,168 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-20 06:03:36,168 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-20 06:03:36,169 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-20 06:03:36,169 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-20 06:03:36,170 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-20 06:03:36,170 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-20 06:03:36,170 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-20 06:03:36,170 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-20 06:03:36,170 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-20 06:03:36,171 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-20 06:03:36,171 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-20 06:03:36,171 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-20 06:03:36,171 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8ace54a-a0b0-41cc-b5a4-287d5a2f4893/bin/utaipan-tZwUujhuQw/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8ace54a-a0b0-41cc-b5a4-287d5a2f4893/bin/utaipan-tZwUujhuQw Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2dd3364bf5e5337e36d5137f60eb9fb66edcf0c750f78ddc701b6a530fbd02a5 [2021-10-20 06:03:36,479 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-20 06:03:36,517 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-20 06:03:36,519 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-20 06:03:36,520 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-20 06:03:36,521 INFO L275 PluginConnector]: CDTParser initialized [2021-10-20 06:03:36,522 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8ace54a-a0b0-41cc-b5a4-287d5a2f4893/bin/utaipan-tZwUujhuQw/../../sv-benchmarks/c/loop-zilu/benchmark19_conjunctive.i [2021-10-20 06:03:36,593 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8ace54a-a0b0-41cc-b5a4-287d5a2f4893/bin/utaipan-tZwUujhuQw/data/91f062bab/ba977e6f225f4b98b2e71ac24986a767/FLAG9abdb7e36 [2021-10-20 06:03:37,013 INFO L306 CDTParser]: Found 1 translation units. [2021-10-20 06:03:37,014 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8ace54a-a0b0-41cc-b5a4-287d5a2f4893/sv-benchmarks/c/loop-zilu/benchmark19_conjunctive.i [2021-10-20 06:03:37,024 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8ace54a-a0b0-41cc-b5a4-287d5a2f4893/bin/utaipan-tZwUujhuQw/data/91f062bab/ba977e6f225f4b98b2e71ac24986a767/FLAG9abdb7e36 [2021-10-20 06:03:37,394 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8ace54a-a0b0-41cc-b5a4-287d5a2f4893/bin/utaipan-tZwUujhuQw/data/91f062bab/ba977e6f225f4b98b2e71ac24986a767 [2021-10-20 06:03:37,397 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-20 06:03:37,398 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-20 06:03:37,400 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-20 06:03:37,400 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-20 06:03:37,403 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-20 06:03:37,404 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 06:03:37" (1/1) ... [2021-10-20 06:03:37,405 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@290a8391 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:03:37, skipping insertion in model container [2021-10-20 06:03:37,405 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 06:03:37" (1/1) ... [2021-10-20 06:03:37,412 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-20 06:03:37,426 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-20 06:03:37,582 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8ace54a-a0b0-41cc-b5a4-287d5a2f4893/sv-benchmarks/c/loop-zilu/benchmark19_conjunctive.i[873,886] [2021-10-20 06:03:37,594 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-20 06:03:37,607 INFO L203 MainTranslator]: Completed pre-run [2021-10-20 06:03:37,620 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8ace54a-a0b0-41cc-b5a4-287d5a2f4893/sv-benchmarks/c/loop-zilu/benchmark19_conjunctive.i[873,886] [2021-10-20 06:03:37,623 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-20 06:03:37,636 INFO L208 MainTranslator]: Completed translation [2021-10-20 06:03:37,637 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:03:37 WrapperNode [2021-10-20 06:03:37,637 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-20 06:03:37,639 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-20 06:03:37,639 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-20 06:03:37,639 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-20 06:03:37,646 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:03:37" (1/1) ... [2021-10-20 06:03:37,653 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:03:37" (1/1) ... [2021-10-20 06:03:37,670 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-20 06:03:37,671 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-20 06:03:37,671 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-20 06:03:37,671 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-20 06:03:37,679 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:03:37" (1/1) ... [2021-10-20 06:03:37,679 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:03:37" (1/1) ... [2021-10-20 06:03:37,681 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:03:37" (1/1) ... [2021-10-20 06:03:37,681 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:03:37" (1/1) ... [2021-10-20 06:03:37,684 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:03:37" (1/1) ... [2021-10-20 06:03:37,688 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:03:37" (1/1) ... [2021-10-20 06:03:37,689 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:03:37" (1/1) ... [2021-10-20 06:03:37,690 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-20 06:03:37,691 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-20 06:03:37,691 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-20 06:03:37,692 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-20 06:03:37,693 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:03:37" (1/1) ... [2021-10-20 06:03:37,699 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-20 06:03:37,711 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8ace54a-a0b0-41cc-b5a4-287d5a2f4893/bin/utaipan-tZwUujhuQw/z3 [2021-10-20 06:03:37,723 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8ace54a-a0b0-41cc-b5a4-287d5a2f4893/bin/utaipan-tZwUujhuQw/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-20 06:03:37,756 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8ace54a-a0b0-41cc-b5a4-287d5a2f4893/bin/utaipan-tZwUujhuQw/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-20 06:03:37,778 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-20 06:03:37,779 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-20 06:03:37,781 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-20 06:03:37,781 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-20 06:03:38,107 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-20 06:03:38,107 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-20 06:03:38,110 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:03:38 BoogieIcfgContainer [2021-10-20 06:03:38,110 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-20 06:03:38,111 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-20 06:03:38,111 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-20 06:03:38,114 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-20 06:03:38,115 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 06:03:37" (1/3) ... [2021-10-20 06:03:38,115 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@107c948f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 06:03:38, skipping insertion in model container [2021-10-20 06:03:38,115 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:03:37" (2/3) ... [2021-10-20 06:03:38,116 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@107c948f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 06:03:38, skipping insertion in model container [2021-10-20 06:03:38,116 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:03:38" (3/3) ... [2021-10-20 06:03:38,117 INFO L111 eAbstractionObserver]: Analyzing ICFG benchmark19_conjunctive.i [2021-10-20 06:03:38,122 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-20 06:03:38,122 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-20 06:03:38,200 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-20 06:03:38,209 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-20 06:03:38,210 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-20 06:03:38,226 INFO L276 IsEmpty]: Start isEmpty. Operand has 9 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 8 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 06:03:38,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-20 06:03:38,232 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 06:03:38,232 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-20 06:03:38,233 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-20 06:03:38,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 06:03:38,245 INFO L82 PathProgramCache]: Analyzing trace with hash 59349214, now seen corresponding path program 1 times [2021-10-20 06:03:38,263 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-20 06:03:38,264 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282875012] [2021-10-20 06:03:38,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 06:03:38,265 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-20 06:03:38,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 06:03:38,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 06:03:38,486 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-20 06:03:38,486 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282875012] [2021-10-20 06:03:38,488 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1282875012] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-20 06:03:38,488 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-20 06:03:38,488 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-20 06:03:38,490 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671161024] [2021-10-20 06:03:38,495 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-20 06:03:38,495 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-20 06:03:38,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-20 06:03:38,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-20 06:03:38,514 INFO L87 Difference]: Start difference. First operand has 9 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 8 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 06:03:38,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-20 06:03:38,560 INFO L93 Difference]: Finished difference Result 16 states and 19 transitions. [2021-10-20 06:03:38,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-20 06:03:38,563 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-10-20 06:03:38,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-20 06:03:38,572 INFO L225 Difference]: With dead ends: 16 [2021-10-20 06:03:38,573 INFO L226 Difference]: Without dead ends: 7 [2021-10-20 06:03:38,577 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 13.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-20 06:03:38,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2021-10-20 06:03:38,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2021-10-20 06:03:38,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 06:03:38,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2021-10-20 06:03:38,606 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 5 [2021-10-20 06:03:38,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-20 06:03:38,606 INFO L470 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2021-10-20 06:03:38,607 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 06:03:38,607 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2021-10-20 06:03:38,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-20 06:03:38,608 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 06:03:38,608 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-20 06:03:38,608 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-20 06:03:38,609 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-20 06:03:38,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 06:03:38,612 INFO L82 PathProgramCache]: Analyzing trace with hash 1839242300, now seen corresponding path program 1 times [2021-10-20 06:03:38,612 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-20 06:03:38,613 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287668716] [2021-10-20 06:03:38,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 06:03:38,613 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-20 06:03:38,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 06:03:38,777 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 06:03:38,777 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-20 06:03:38,778 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287668716] [2021-10-20 06:03:38,778 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [287668716] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-20 06:03:38,778 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [492618076] [2021-10-20 06:03:38,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 06:03:38,779 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-20 06:03:38,779 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8ace54a-a0b0-41cc-b5a4-287d5a2f4893/bin/utaipan-tZwUujhuQw/z3 [2021-10-20 06:03:38,781 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8ace54a-a0b0-41cc-b5a4-287d5a2f4893/bin/utaipan-tZwUujhuQw/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-20 06:03:38,800 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8ace54a-a0b0-41cc-b5a4-287d5a2f4893/bin/utaipan-tZwUujhuQw/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-20 06:03:38,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 06:03:38,831 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-20 06:03:38,835 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-20 06:03:39,073 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 06:03:39,073 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-20 06:03:39,248 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 06:03:39,249 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [492618076] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-20 06:03:39,249 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1758598555] [2021-10-20 06:03:39,282 INFO L159 IcfgInterpreter]: Started Sifa with 6 locations of interest [2021-10-20 06:03:39,283 INFO L166 IcfgInterpreter]: Building call graph [2021-10-20 06:03:39,287 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-20 06:03:39,292 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-20 06:03:39,292 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-20 06:03:39,317 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:03:39,319 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-20 06:03:39,319 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:03:39,320 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-10-20 06:03:39,321 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-20 06:03:39,322 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:03:39,322 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-10-20 06:03:39,325 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 113 [2021-10-20 06:03:39,344 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_8|], 10=[|v_#valid_9|]} [2021-10-20 06:03:39,356 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-20 06:03:39,362 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-10-20 06:03:39,363 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:03:39,363 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-10-20 06:03:39,364 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:03:39,365 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-10-20 06:03:39,365 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-20 06:03:39,366 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 06:03:39,385 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:03:39,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-20 06:03:39,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-20 06:03:39,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-20 06:03:39,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-20 06:03:39,400 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-10-20 06:03:39,401 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:03:39,403 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-20 06:03:39,404 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:03:39,404 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-20 06:03:39,405 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-10-20 06:03:39,405 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 06:03:39,437 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:03:39,439 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:03:39,442 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 95 [2021-10-20 06:03:39,442 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-20 06:03:39,443 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:110, output treesize:95 [2021-10-20 06:03:39,463 INFO L180 QuantifierPusher]: treesize reduction 10, result has 91.5 percent of original size [2021-10-20 06:03:39,472 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 103 [2021-10-20 06:03:39,477 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 06:03:39,499 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 06:03:39,536 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 06:03:39,582 INFO L180 QuantifierPusher]: treesize reduction 8, result has 96.9 percent of original size [2021-10-20 06:03:39,599 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 249 [2021-10-20 06:03:39,610 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 06:03:39,693 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 06:03:39,695 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 06:03:39,696 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 06:03:39,698 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 06:03:39,700 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 06:03:39,716 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 06:03:39,728 INFO L180 QuantifierPusher]: treesize reduction 32, result has 62.4 percent of original size [2021-10-20 06:03:39,731 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-10-20 06:03:39,734 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 06:03:39,752 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 06:03:39,764 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 06:03:39,786 INFO L180 QuantifierPusher]: treesize reduction 8, result has 93.9 percent of original size [2021-10-20 06:03:39,795 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 114 [2021-10-20 06:03:39,801 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 06:03:39,828 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 06:03:39,830 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 06:03:39,832 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 06:03:39,833 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 06:03:39,839 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 06:03:39,848 INFO L180 QuantifierPusher]: treesize reduction 32, result has 60.0 percent of original size [2021-10-20 06:03:39,852 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-10-20 06:03:39,860 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-20 06:03:40,270 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-20 06:03:40,270 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-10-20 06:03:40,270 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2021-10-20 06:03:40,272 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544850127] [2021-10-20 06:03:40,273 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-20 06:03:40,273 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-20 06:03:40,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-20 06:03:40,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2021-10-20 06:03:40,281 INFO L87 Difference]: Start difference. First operand 7 states and 7 transitions. Second operand has 10 states, 10 states have (on average 1.3) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 06:03:40,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-20 06:03:40,429 INFO L93 Difference]: Finished difference Result 9 states and 10 transitions. [2021-10-20 06:03:40,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-20 06:03:40,429 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.3) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-10-20 06:03:40,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-20 06:03:40,430 INFO L225 Difference]: With dead ends: 9 [2021-10-20 06:03:40,430 INFO L226 Difference]: Without dead ends: 0 [2021-10-20 06:03:40,431 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 626.2ms TimeCoverageRelationStatistics Valid=74, Invalid=268, Unknown=0, NotChecked=0, Total=342 [2021-10-20 06:03:40,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-20 06:03:40,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-20 06:03:40,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 06:03:40,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-20 06:03:40,432 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 6 [2021-10-20 06:03:40,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-20 06:03:40,433 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-20 06:03:40,433 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.3) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 06:03:40,433 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-20 06:03:40,433 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-20 06:03:40,436 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-20 06:03:40,474 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8ace54a-a0b0-41cc-b5a4-287d5a2f4893/bin/utaipan-tZwUujhuQw/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-20 06:03:40,652 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8ace54a-a0b0-41cc-b5a4-287d5a2f4893/bin/utaipan-tZwUujhuQw/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-20 06:03:40,654 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-20 06:03:40,656 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 06:03:40,664 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 06:03:40,690 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-20 06:03:40,690 INFO L857 garLoopResultBuilder]: For program point L23(line 23) no Hoare annotation was computed. [2021-10-20 06:03:40,690 INFO L857 garLoopResultBuilder]: For program point L15(lines 15 17) no Hoare annotation was computed. [2021-10-20 06:03:40,690 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-20 06:03:40,691 INFO L860 garLoopResultBuilder]: At program point L28(lines 19 29) the Hoare annotation is: true [2021-10-20 06:03:40,692 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 16) no Hoare annotation was computed. [2021-10-20 06:03:40,692 INFO L853 garLoopResultBuilder]: At program point L24-2(lines 24 26) the Hoare annotation is: (and (< 0 ULTIMATE.start_main_~n~0) (<= ULTIMATE.start_main_~j~0 ULTIMATE.start_main_~k~0) (<= ULTIMATE.start_main_~k~0 ULTIMATE.start_main_~j~0) (< 0 (+ ULTIMATE.start_main_~k~0 1))) [2021-10-20 06:03:40,692 INFO L857 garLoopResultBuilder]: For program point L16(line 16) no Hoare annotation was computed. [2021-10-20 06:03:40,692 INFO L857 garLoopResultBuilder]: For program point L14(lines 14 18) no Hoare annotation was computed. [2021-10-20 06:03:40,696 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-20 06:03:40,723 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 06:03:40 BoogieIcfgContainer [2021-10-20 06:03:40,723 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-20 06:03:40,724 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-20 06:03:40,724 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-20 06:03:40,724 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-20 06:03:40,725 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:03:38" (3/4) ... [2021-10-20 06:03:40,727 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-20 06:03:40,735 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2021-10-20 06:03:40,736 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2021-10-20 06:03:40,736 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-20 06:03:40,737 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-20 06:03:40,781 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8ace54a-a0b0-41cc-b5a4-287d5a2f4893/bin/utaipan-tZwUujhuQw/witness.graphml [2021-10-20 06:03:40,781 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-20 06:03:40,782 INFO L168 Benchmark]: Toolchain (without parser) took 3383.52 ms. Allocated memory was 121.6 MB in the beginning and 148.9 MB in the end (delta: 27.3 MB). Free memory was 79.8 MB in the beginning and 73.0 MB in the end (delta: 6.8 MB). Peak memory consumption was 34.5 MB. Max. memory is 16.1 GB. [2021-10-20 06:03:40,783 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 121.6 MB. Free memory was 96.0 MB in the beginning and 96.0 MB in the end (delta: 65.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-20 06:03:40,783 INFO L168 Benchmark]: CACSL2BoogieTranslator took 237.98 ms. Allocated memory is still 121.6 MB. Free memory was 79.6 MB in the beginning and 95.9 MB in the end (delta: -16.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-20 06:03:40,784 INFO L168 Benchmark]: Boogie Procedure Inliner took 31.69 ms. Allocated memory is still 121.6 MB. Free memory was 95.9 MB in the beginning and 94.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-20 06:03:40,784 INFO L168 Benchmark]: Boogie Preprocessor took 19.68 ms. Allocated memory is still 121.6 MB. Free memory was 94.6 MB in the beginning and 93.5 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-20 06:03:40,786 INFO L168 Benchmark]: RCFGBuilder took 418.65 ms. Allocated memory is still 121.6 MB. Free memory was 93.5 MB in the beginning and 82.7 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-20 06:03:40,787 INFO L168 Benchmark]: TraceAbstraction took 2611.78 ms. Allocated memory was 121.6 MB in the beginning and 148.9 MB in the end (delta: 27.3 MB). Free memory was 82.3 MB in the beginning and 75.1 MB in the end (delta: 7.2 MB). Peak memory consumption was 36.6 MB. Max. memory is 16.1 GB. [2021-10-20 06:03:40,787 INFO L168 Benchmark]: Witness Printer took 57.43 ms. Allocated memory is still 148.9 MB. Free memory was 75.1 MB in the beginning and 73.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-20 06:03:40,790 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 121.6 MB. Free memory was 96.0 MB in the beginning and 96.0 MB in the end (delta: 65.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 237.98 ms. Allocated memory is still 121.6 MB. Free memory was 79.6 MB in the beginning and 95.9 MB in the end (delta: -16.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 31.69 ms. Allocated memory is still 121.6 MB. Free memory was 95.9 MB in the beginning and 94.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 19.68 ms. Allocated memory is still 121.6 MB. Free memory was 94.6 MB in the beginning and 93.5 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 418.65 ms. Allocated memory is still 121.6 MB. Free memory was 93.5 MB in the beginning and 82.7 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2611.78 ms. Allocated memory was 121.6 MB in the beginning and 148.9 MB in the end (delta: 27.3 MB). Free memory was 82.3 MB in the beginning and 75.1 MB in the end (delta: 7.2 MB). Peak memory consumption was 36.6 MB. Max. memory is 16.1 GB. * Witness Printer took 57.43 ms. Allocated memory is still 148.9 MB. Free memory was 75.1 MB in the beginning and 73.0 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: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 16]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 9 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 2497.8ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 9.7ms, AutomataDifference: 237.3ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 36.2ms, InitialAbstractionConstructionTime: 12.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 11 SDtfs, 4 SDslu, 9 SDs, 0 SdLazy, 23 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 40.1ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 29 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 640.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=9occurred in iteration=0, InterpolantAutomatonStates: 10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 15.9ms AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 5 NumberOfFragments, 16 HoareAnnotationTreeSize, 2 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 8.7ms HoareSimplificationTime, 2 FomulaSimplificationsInter, 32 FormulaSimplificationTreeSizeReductionInter, 22.0ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 20.5ms SsaConstructionTime, 88.7ms SatisfiabilityAnalysisTime, 640.5ms InterpolantComputationTime, 17 NumberOfCodeBlocks, 17 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 19 ConstructedInterpolants, 0 QuantifiedInterpolants, 99 SizeOfPredicates, 7 NumberOfNonLiveVariables, 50 ConjunctsInSsa, 11 ConjunctsInUnsatCore, 4 InterpolantComputations, 1 PerfectInterpolantSequences, 0/3 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: ((0 < n && j <= k) && k <= j) && 0 < k + 1 - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2021-10-20 06:03:40,844 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8ace54a-a0b0-41cc-b5a4-287d5a2f4893/bin/utaipan-tZwUujhuQw/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...