./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-simple/nested_1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0f8a17c6 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bd82a3a-e2d7-4863-999c-d9eb423d1967/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bd82a3a-e2d7-4863-999c-d9eb423d1967/bin/utaipan-UbGMyvGFUs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bd82a3a-e2d7-4863-999c-d9eb423d1967/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bd82a3a-e2d7-4863-999c-d9eb423d1967/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-simple/nested_1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bd82a3a-e2d7-4863-999c-d9eb423d1967/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bd82a3a-e2d7-4863-999c-d9eb423d1967/bin/utaipan-UbGMyvGFUs --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 5dbc8f54f9c446babb02937902a9e0651922ee3ad3469ce820281714b321626f --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 13:29:16,069 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 13:29:16,074 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 13:29:16,119 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 13:29:16,120 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 13:29:16,121 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 13:29:16,123 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 13:29:16,126 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 13:29:16,129 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 13:29:16,130 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 13:29:16,132 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 13:29:16,133 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 13:29:16,134 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 13:29:16,136 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 13:29:16,137 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 13:29:16,139 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 13:29:16,140 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 13:29:16,142 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 13:29:16,145 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 13:29:16,147 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 13:29:16,149 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 13:29:16,159 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 13:29:16,161 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 13:29:16,162 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 13:29:16,166 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 13:29:16,166 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 13:29:16,167 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 13:29:16,168 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 13:29:16,168 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 13:29:16,169 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 13:29:16,174 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 13:29:16,176 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 13:29:16,178 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 13:29:16,179 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 13:29:16,180 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 13:29:16,181 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 13:29:16,181 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 13:29:16,181 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 13:29:16,182 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 13:29:16,183 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 13:29:16,184 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 13:29:16,185 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bd82a3a-e2d7-4863-999c-d9eb423d1967/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-19 13:29:16,246 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 13:29:16,247 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 13:29:16,247 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 13:29:16,248 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 13:29:16,248 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 13:29:16,248 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 13:29:16,248 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 13:29:16,248 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-19 13:29:16,249 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 13:29:16,249 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 13:29:16,249 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-19 13:29:16,249 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-19 13:29:16,249 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 13:29:16,250 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-19 13:29:16,250 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-19 13:29:16,250 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-19 13:29:16,251 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 13:29:16,251 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-19 13:29:16,251 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 13:29:16,251 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-19 13:29:16,252 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 13:29:16,252 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 13:29:16,252 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 13:29:16,252 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 13:29:16,252 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 13:29:16,252 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-19 13:29:16,253 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 13:29:16,253 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 13:29:16,253 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 13:29:16,258 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 13:29:16,258 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 13:29:16,258 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 13:29:16,258 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 13:29:16,258 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 13:29:16,259 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 13:29:16,259 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-19 13:29:16,259 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-19 13:29:16,259 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 13:29:16,259 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 13:29:16,260 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 13:29:16,260 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_8bd82a3a-e2d7-4863-999c-d9eb423d1967/bin/utaipan-UbGMyvGFUs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bd82a3a-e2d7-4863-999c-d9eb423d1967/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5dbc8f54f9c446babb02937902a9e0651922ee3ad3469ce820281714b321626f [2021-11-19 13:29:16,535 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 13:29:16,560 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 13:29:16,562 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 13:29:16,564 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 13:29:16,565 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 13:29:16,566 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bd82a3a-e2d7-4863-999c-d9eb423d1967/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/loop-simple/nested_1.c [2021-11-19 13:29:16,634 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bd82a3a-e2d7-4863-999c-d9eb423d1967/bin/utaipan-UbGMyvGFUs/data/39da14b81/a4dcff58d56d4cb2a3ea92eb6b537681/FLAG8b87ce936 [2021-11-19 13:29:17,054 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 13:29:17,055 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bd82a3a-e2d7-4863-999c-d9eb423d1967/sv-benchmarks/c/loop-simple/nested_1.c [2021-11-19 13:29:17,061 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bd82a3a-e2d7-4863-999c-d9eb423d1967/bin/utaipan-UbGMyvGFUs/data/39da14b81/a4dcff58d56d4cb2a3ea92eb6b537681/FLAG8b87ce936 [2021-11-19 13:29:17,075 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bd82a3a-e2d7-4863-999c-d9eb423d1967/bin/utaipan-UbGMyvGFUs/data/39da14b81/a4dcff58d56d4cb2a3ea92eb6b537681 [2021-11-19 13:29:17,077 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 13:29:17,079 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 13:29:17,080 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 13:29:17,081 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 13:29:17,085 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 13:29:17,086 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:29:17" (1/1) ... [2021-11-19 13:29:17,087 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@576e14bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:29:17, skipping insertion in model container [2021-11-19 13:29:17,087 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:29:17" (1/1) ... [2021-11-19 13:29:17,095 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 13:29:17,106 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 13:29:17,277 WARN L230 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_8bd82a3a-e2d7-4863-999c-d9eb423d1967/sv-benchmarks/c/loop-simple/nested_1.c[676,689] [2021-11-19 13:29:17,281 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 13:29:17,297 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 13:29:17,310 WARN L230 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_8bd82a3a-e2d7-4863-999c-d9eb423d1967/sv-benchmarks/c/loop-simple/nested_1.c[676,689] [2021-11-19 13:29:17,311 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 13:29:17,324 INFO L208 MainTranslator]: Completed translation [2021-11-19 13:29:17,324 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:29:17 WrapperNode [2021-11-19 13:29:17,324 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 13:29:17,325 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-19 13:29:17,326 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-19 13:29:17,326 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-19 13:29:17,334 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:29:17" (1/1) ... [2021-11-19 13:29:17,340 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:29:17" (1/1) ... [2021-11-19 13:29:17,357 INFO L137 Inliner]: procedures = 10, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 23 [2021-11-19 13:29:17,357 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-19 13:29:17,358 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 13:29:17,358 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 13:29:17,358 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 13:29:17,366 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:29:17" (1/1) ... [2021-11-19 13:29:17,366 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:29:17" (1/1) ... [2021-11-19 13:29:17,368 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:29:17" (1/1) ... [2021-11-19 13:29:17,369 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:29:17" (1/1) ... [2021-11-19 13:29:17,372 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:29:17" (1/1) ... [2021-11-19 13:29:17,376 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:29:17" (1/1) ... [2021-11-19 13:29:17,378 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:29:17" (1/1) ... [2021-11-19 13:29:17,387 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 13:29:17,388 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 13:29:17,389 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 13:29:17,389 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 13:29:17,390 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:29:17" (1/1) ... [2021-11-19 13:29:17,398 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 13:29:17,411 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bd82a3a-e2d7-4863-999c-d9eb423d1967/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 13:29:17,432 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bd82a3a-e2d7-4863-999c-d9eb423d1967/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 13:29:17,463 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bd82a3a-e2d7-4863-999c-d9eb423d1967/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 13:29:17,480 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 13:29:17,480 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 13:29:17,481 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 13:29:17,481 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-19 13:29:17,541 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 13:29:17,543 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 13:29:17,628 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 13:29:17,646 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 13:29:17,647 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-19 13:29:17,649 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:29:17 BoogieIcfgContainer [2021-11-19 13:29:17,649 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 13:29:17,651 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 13:29:17,652 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 13:29:17,655 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 13:29:17,655 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 01:29:17" (1/3) ... [2021-11-19 13:29:17,656 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d35a44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 01:29:17, skipping insertion in model container [2021-11-19 13:29:17,656 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:29:17" (2/3) ... [2021-11-19 13:29:17,657 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d35a44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 01:29:17, skipping insertion in model container [2021-11-19 13:29:17,657 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:29:17" (3/3) ... [2021-11-19 13:29:17,658 INFO L111 eAbstractionObserver]: Analyzing ICFG nested_1.c [2021-11-19 13:29:17,664 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 13:29:17,664 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-19 13:29:17,713 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 13:29:17,721 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 [2021-11-19 13:29:17,721 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-19 13:29:17,735 INFO L276 IsEmpty]: Start isEmpty. Operand has 7 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:29:17,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-11-19 13:29:17,740 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:29:17,740 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-11-19 13:29:17,741 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:29:17,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:29:17,752 INFO L85 PathProgramCache]: Analyzing trace with hash 1848580, now seen corresponding path program 1 times [2021-11-19 13:29:17,763 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:29:17,765 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80697313] [2021-11-19 13:29:17,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:29:17,766 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:29:17,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:29:17,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:29:17,986 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:29:17,987 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80697313] [2021-11-19 13:29:17,987 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [80697313] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:29:17,988 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:29:17,988 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-19 13:29:17,990 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853676948] [2021-11-19 13:29:17,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:29:17,994 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 13:29:17,995 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:29:18,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 13:29:18,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 13:29:18,055 INFO L87 Difference]: Start difference. First operand has 7 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 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) [2021-11-19 13:29:18,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:29:18,129 INFO L93 Difference]: Finished difference Result 13 states and 15 transitions. [2021-11-19 13:29:18,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 13:29:18,132 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 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 4 [2021-11-19 13:29:18,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:29:18,139 INFO L225 Difference]: With dead ends: 13 [2021-11-19 13:29:18,154 INFO L226 Difference]: Without dead ends: 6 [2021-11-19 13:29:18,157 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 13:29:18,161 INFO L933 BasicCegarLoop]: 3 mSDtfsCounter, 0 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 13:29:18,163 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 4 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 13:29:18,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6 states. [2021-11-19 13:29:18,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6 to 6. [2021-11-19 13:29:18,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 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) [2021-11-19 13:29:18,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 6 transitions. [2021-11-19 13:29:18,193 INFO L78 Accepts]: Start accepts. Automaton has 6 states and 6 transitions. Word has length 4 [2021-11-19 13:29:18,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:29:18,193 INFO L470 AbstractCegarLoop]: Abstraction has 6 states and 6 transitions. [2021-11-19 13:29:18,194 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 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) [2021-11-19 13:29:18,194 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states and 6 transitions. [2021-11-19 13:29:18,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-19 13:29:18,194 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:29:18,195 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-19 13:29:18,195 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-19 13:29:18,195 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:29:18,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:29:18,196 INFO L85 PathProgramCache]: Analyzing trace with hash 57200258, now seen corresponding path program 1 times [2021-11-19 13:29:18,197 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:29:18,197 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252542995] [2021-11-19 13:29:18,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:29:18,197 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:29:18,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:29:18,232 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:29:18,232 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:29:18,232 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1252542995] [2021-11-19 13:29:18,233 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1252542995] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-19 13:29:18,233 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1095630644] [2021-11-19 13:29:18,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:29:18,234 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 13:29:18,234 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bd82a3a-e2d7-4863-999c-d9eb423d1967/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 13:29:18,236 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bd82a3a-e2d7-4863-999c-d9eb423d1967/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 13:29:18,256 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bd82a3a-e2d7-4863-999c-d9eb423d1967/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-19 13:29:18,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:29:18,287 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 13:29:18,291 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:29:18,353 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:29:18,353 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:29:18,459 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:29:18,459 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1095630644] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:29:18,460 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1923462009] [2021-11-19 13:29:18,494 INFO L159 IcfgInterpreter]: Started Sifa with 5 locations of interest [2021-11-19 13:29:18,497 INFO L166 IcfgInterpreter]: Building call graph [2021-11-19 13:29:18,505 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-19 13:29:18,511 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-19 13:29:18,512 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-19 13:29:18,557 INFO L180 QuantifierPusher]: treesize reduction 3, result has 95.8 percent of original size [2021-11-19 13:29:18,565 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 62 [2021-11-19 13:29:18,571 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:29:18,653 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:29:18,709 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:29:18,748 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:29:18,755 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 151 [2021-11-19 13:29:18,759 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:29:18,791 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:29:18,793 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:29:18,798 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:29:18,801 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:29:18,803 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:29:18,818 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 13:29:18,825 INFO L180 QuantifierPusher]: treesize reduction 12, result has 64.7 percent of original size [2021-11-19 13:29:18,832 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-19 13:29:18,840 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-19 13:29:18,939 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-19 13:29:18,940 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-19 13:29:18,940 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 4] total 7 [2021-11-19 13:29:18,941 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982725956] [2021-11-19 13:29:18,942 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-19 13:29:18,942 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 13:29:18,943 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:29:18,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 13:29:18,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-11-19 13:29:18,945 INFO L87 Difference]: Start difference. First operand 6 states and 6 transitions. Second operand has 8 states, 8 states have (on average 1.375) internal successors, (11), 7 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) [2021-11-19 13:29:18,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:29:18,970 INFO L93 Difference]: Finished difference Result 9 states and 11 transitions. [2021-11-19 13:29:18,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 13:29:18,977 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.375) internal successors, (11), 7 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) Word has length 5 [2021-11-19 13:29:18,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:29:18,978 INFO L225 Difference]: With dead ends: 9 [2021-11-19 13:29:18,978 INFO L226 Difference]: Without dead ends: 0 [2021-11-19 13:29:18,980 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-11-19 13:29:18,982 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 13:29:18,987 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 0 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 13:29:18,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-19 13:29:18,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-19 13:29:18,990 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) [2021-11-19 13:29:18,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-19 13:29:18,990 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 5 [2021-11-19 13:29:18,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:29:18,990 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-19 13:29:18,991 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.375) internal successors, (11), 7 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) [2021-11-19 13:29:18,991 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-19 13:29:18,991 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-19 13:29:18,993 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-19 13:29:19,028 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bd82a3a-e2d7-4863-999c-d9eb423d1967/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-19 13:29:19,194 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bd82a3a-e2d7-4863-999c-d9eb423d1967/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 13:29:19,196 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-11-19 13:29:19,206 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-11-19 13:29:19,206 INFO L858 garLoopResultBuilder]: For program point L23(line 23) no Hoare annotation was computed. [2021-11-19 13:29:19,207 INFO L854 garLoopResultBuilder]: At program point L19-3(lines 19 21) the Hoare annotation is: (or (< |ULTIMATE.start_main_~a~0#1| 6) (= 6 |ULTIMATE.start_main_~a~0#1|)) [2021-11-19 13:29:19,207 INFO L858 garLoopResultBuilder]: For program point L19-4(lines 15 26) no Hoare annotation was computed. [2021-11-19 13:29:19,207 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-11-19 13:29:19,207 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 23) no Hoare annotation was computed. [2021-11-19 13:29:19,208 INFO L861 garLoopResultBuilder]: At program point L22-1(lines 22 24) the Hoare annotation is: true [2021-11-19 13:29:19,211 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2021-11-19 13:29:19,212 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-19 13:29:19,224 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 01:29:19 BoogieIcfgContainer [2021-11-19 13:29:19,225 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-19 13:29:19,225 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-19 13:29:19,226 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-19 13:29:19,226 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-19 13:29:19,226 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:29:17" (3/4) ... [2021-11-19 13:29:19,229 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-19 13:29:19,237 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2021-11-19 13:29:19,237 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2021-11-19 13:29:19,238 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2021-11-19 13:29:19,238 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-19 13:29:19,272 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bd82a3a-e2d7-4863-999c-d9eb423d1967/bin/utaipan-UbGMyvGFUs/witness.graphml [2021-11-19 13:29:19,272 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-19 13:29:19,273 INFO L158 Benchmark]: Toolchain (without parser) took 2194.44ms. Allocated memory is still 109.1MB. Free memory was 70.5MB in the beginning and 58.8MB in the end (delta: 11.7MB). Peak memory consumption was 11.7MB. Max. memory is 16.1GB. [2021-11-19 13:29:19,273 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 109.1MB. Free memory is still 87.3MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 13:29:19,274 INFO L158 Benchmark]: CACSL2BoogieTranslator took 244.26ms. Allocated memory is still 109.1MB. Free memory was 70.3MB in the beginning and 85.2MB in the end (delta: -14.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-19 13:29:19,274 INFO L158 Benchmark]: Boogie Procedure Inliner took 31.68ms. Allocated memory is still 109.1MB. Free memory was 85.2MB in the beginning and 83.9MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 13:29:19,274 INFO L158 Benchmark]: Boogie Preprocessor took 29.68ms. Allocated memory is still 109.1MB. Free memory was 83.9MB in the beginning and 82.8MB in the end (delta: 1.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-19 13:29:19,275 INFO L158 Benchmark]: RCFGBuilder took 261.11ms. Allocated memory is still 109.1MB. Free memory was 82.8MB in the beginning and 74.1MB in the end (delta: 8.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-19 13:29:19,275 INFO L158 Benchmark]: TraceAbstraction took 1573.34ms. Allocated memory is still 109.1MB. Free memory was 73.5MB in the beginning and 60.9MB in the end (delta: 12.6MB). Peak memory consumption was 14.6MB. Max. memory is 16.1GB. [2021-11-19 13:29:19,278 INFO L158 Benchmark]: Witness Printer took 47.14ms. Allocated memory is still 109.1MB. Free memory was 60.9MB in the beginning and 58.8MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-19 13:29:19,280 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 109.1MB. Free memory is still 87.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 244.26ms. Allocated memory is still 109.1MB. Free memory was 70.3MB in the beginning and 85.2MB in the end (delta: -14.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 31.68ms. Allocated memory is still 109.1MB. Free memory was 85.2MB in the beginning and 83.9MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 29.68ms. Allocated memory is still 109.1MB. Free memory was 83.9MB in the beginning and 82.8MB in the end (delta: 1.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 261.11ms. Allocated memory is still 109.1MB. Free memory was 82.8MB in the beginning and 74.1MB in the end (delta: 8.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 1573.34ms. Allocated memory is still 109.1MB. Free memory was 73.5MB in the beginning and 60.9MB in the end (delta: 12.6MB). Peak memory consumption was 14.6MB. Max. memory is 16.1GB. * Witness Printer took 47.14ms. Allocated memory is still 109.1MB. Free memory was 60.9MB in the beginning and 58.8MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 23]: 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, 7 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.5s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1 mSDsluCounter, 4 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2 mSDsCounter, 6 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 19 IncrementalHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 6 mSolverCounterUnsat, 3 mSDtfsCounter, 19 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7occurred in iteration=0, InterpolantAutomatonStates: 10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 6 NumberOfFragments, 8 HoareAnnotationTreeSize, 2 FomulaSimplifications, 9 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 14 NumberOfCodeBlocks, 14 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 15 ConstructedInterpolants, 0 QuantifiedInterpolants, 35 SizeOfPredicates, 0 NumberOfNonLiveVariables, 33 ConjunctsInSsa, 4 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: 22]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: a < 6 || 6 == a RESULT: Ultimate proved your program to be correct! [2021-11-19 13:29:19,343 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8bd82a3a-e2d7-4863-999c-d9eb423d1967/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE