./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-invgen/large_const.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6a47aea7 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a24484d-752b-4490-a968-4b0da3d0d19a/bin/utaipan-fb15Y9Yzbl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a24484d-752b-4490-a968-4b0da3d0d19a/bin/utaipan-fb15Y9Yzbl/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a24484d-752b-4490-a968-4b0da3d0d19a/bin/utaipan-fb15Y9Yzbl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a24484d-752b-4490-a968-4b0da3d0d19a/bin/utaipan-fb15Y9Yzbl/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-invgen/large_const.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a24484d-752b-4490-a968-4b0da3d0d19a/bin/utaipan-fb15Y9Yzbl/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a24484d-752b-4490-a968-4b0da3d0d19a/bin/utaipan-fb15Y9Yzbl --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 142d17131671d2eab991ea08656e3b8bfe555dee984fe7672c9a027e971df0f8 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-6a47aea [2021-11-23 16:58:28,230 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 16:58:28,233 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 16:58:28,308 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 16:58:28,309 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 16:58:28,314 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 16:58:28,316 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 16:58:28,321 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 16:58:28,324 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 16:58:28,331 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 16:58:28,332 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 16:58:28,334 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 16:58:28,335 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 16:58:28,338 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 16:58:28,341 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 16:58:28,357 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 16:58:28,360 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 16:58:28,361 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 16:58:28,364 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 16:58:28,374 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 16:58:28,376 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 16:58:28,378 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 16:58:28,382 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 16:58:28,383 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 16:58:28,394 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 16:58:28,395 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 16:58:28,395 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 16:58:28,397 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 16:58:28,399 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 16:58:28,400 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 16:58:28,401 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 16:58:28,402 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 16:58:28,405 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 16:58:28,406 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 16:58:28,408 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 16:58:28,409 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 16:58:28,410 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 16:58:28,410 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 16:58:28,411 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 16:58:28,412 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 16:58:28,413 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 16:58:28,414 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a24484d-752b-4490-a968-4b0da3d0d19a/bin/utaipan-fb15Y9Yzbl/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-23 16:58:28,464 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 16:58:28,465 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 16:58:28,465 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 16:58:28,466 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 16:58:28,468 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 16:58:28,469 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 16:58:28,469 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 16:58:28,469 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 16:58:28,469 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 16:58:28,470 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 16:58:28,471 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 16:58:28,471 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 16:58:28,472 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 16:58:28,472 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 16:58:28,472 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 16:58:28,472 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 16:58:28,473 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 16:58:28,473 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 16:58:28,474 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 16:58:28,474 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 16:58:28,474 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 16:58:28,475 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 16:58:28,475 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 16:58:28,475 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 16:58:28,475 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 16:58:28,476 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 16:58:28,476 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 16:58:28,476 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 16:58:28,476 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 16:58:28,477 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 16:58:28,477 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 16:58:28,477 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 16:58:28,478 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 16:58:28,478 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 16:58:28,478 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 16:58:28,478 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 16:58:28,479 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 16:58:28,479 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 16:58:28,479 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 16:58:28,479 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 16:58:28,480 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 16:58:28,480 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_4a24484d-752b-4490-a968-4b0da3d0d19a/bin/utaipan-fb15Y9Yzbl/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a24484d-752b-4490-a968-4b0da3d0d19a/bin/utaipan-fb15Y9Yzbl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 142d17131671d2eab991ea08656e3b8bfe555dee984fe7672c9a027e971df0f8 [2021-11-23 16:58:28,746 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 16:58:28,783 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 16:58:28,786 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 16:58:28,788 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 16:58:28,788 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 16:58:28,790 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a24484d-752b-4490-a968-4b0da3d0d19a/bin/utaipan-fb15Y9Yzbl/../../sv-benchmarks/c/loop-invgen/large_const.i [2021-11-23 16:58:28,882 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a24484d-752b-4490-a968-4b0da3d0d19a/bin/utaipan-fb15Y9Yzbl/data/a7347d2d0/10ac8d40e89e40b499625debdda4cd7b/FLAG9e87d7e73 [2021-11-23 16:58:29,531 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 16:58:29,532 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a24484d-752b-4490-a968-4b0da3d0d19a/sv-benchmarks/c/loop-invgen/large_const.i [2021-11-23 16:58:29,541 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a24484d-752b-4490-a968-4b0da3d0d19a/bin/utaipan-fb15Y9Yzbl/data/a7347d2d0/10ac8d40e89e40b499625debdda4cd7b/FLAG9e87d7e73 [2021-11-23 16:58:29,905 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a24484d-752b-4490-a968-4b0da3d0d19a/bin/utaipan-fb15Y9Yzbl/data/a7347d2d0/10ac8d40e89e40b499625debdda4cd7b [2021-11-23 16:58:29,908 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 16:58:29,910 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 16:58:29,926 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 16:58:29,926 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 16:58:29,931 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 16:58:29,932 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 04:58:29" (1/1) ... [2021-11-23 16:58:29,933 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f5191dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:58:29, skipping insertion in model container [2021-11-23 16:58:29,933 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 04:58:29" (1/1) ... [2021-11-23 16:58:29,942 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 16:58:29,964 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 16:58:30,140 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_4a24484d-752b-4490-a968-4b0da3d0d19a/sv-benchmarks/c/loop-invgen/large_const.i[893,906] [2021-11-23 16:58:30,161 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 16:58:30,169 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 16:58:30,182 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_4a24484d-752b-4490-a968-4b0da3d0d19a/sv-benchmarks/c/loop-invgen/large_const.i[893,906] [2021-11-23 16:58:30,189 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 16:58:30,205 INFO L208 MainTranslator]: Completed translation [2021-11-23 16:58:30,206 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:58:30 WrapperNode [2021-11-23 16:58:30,206 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 16:58:30,207 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 16:58:30,208 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 16:58:30,208 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 16:58:30,223 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:58:30" (1/1) ... [2021-11-23 16:58:30,236 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:58:30" (1/1) ... [2021-11-23 16:58:30,272 INFO L137 Inliner]: procedures = 16, calls = 7, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 65 [2021-11-23 16:58:30,273 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 16:58:30,274 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 16:58:30,275 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 16:58:30,275 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 16:58:30,287 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:58:30" (1/1) ... [2021-11-23 16:58:30,287 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:58:30" (1/1) ... [2021-11-23 16:58:30,306 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:58:30" (1/1) ... [2021-11-23 16:58:30,306 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:58:30" (1/1) ... [2021-11-23 16:58:30,310 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:58:30" (1/1) ... [2021-11-23 16:58:30,317 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:58:30" (1/1) ... [2021-11-23 16:58:30,321 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:58:30" (1/1) ... [2021-11-23 16:58:30,338 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 16:58:30,339 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 16:58:30,340 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 16:58:30,340 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 16:58:30,341 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:58:30" (1/1) ... [2021-11-23 16:58:30,355 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 16:58:30,368 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a24484d-752b-4490-a968-4b0da3d0d19a/bin/utaipan-fb15Y9Yzbl/z3 [2021-11-23 16:58:30,388 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a24484d-752b-4490-a968-4b0da3d0d19a/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 16:58:30,407 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a24484d-752b-4490-a968-4b0da3d0d19a/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 16:58:30,449 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 16:58:30,449 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 16:58:30,449 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 16:58:30,449 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 16:58:30,535 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 16:58:30,537 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 16:58:30,736 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 16:58:30,753 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder has thrown an exception: java.lang.UnsupportedOperationException: Set is immutable at de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.addAll(ImmutableSet.java:313) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaBuilder.addBranchEncoders(TransFormulaBuilder.java:170) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.parallelComposition(TransFormulaUtils.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.ParallelComposition.(ParallelComposition.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.CodeBlockFactory.constructParallelComposition(CodeBlockFactory.java:109) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.CfgBuilder$LargeBlockEncoding.composeParallel(CfgBuilder.java:1792) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.CfgBuilder$LargeBlockEncoding.(CfgBuilder.java:1653) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.CfgBuilder.createIcfg(CfgBuilder.java:280) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.RCFGBuilderObserver.process(RCFGBuilderObserver.java:88) at de.uni_freiburg.informatik.ultimate.core.coreplugin.modelwalker.DFSTreeWalker.runObserver(DFSTreeWalker.java:65) at de.uni_freiburg.informatik.ultimate.core.coreplugin.modelwalker.BaseWalker.runObserver(BaseWalker.java:93) at de.uni_freiburg.informatik.ultimate.core.coreplugin.modelwalker.BaseWalker.run(BaseWalker.java:86) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-23 16:58:30,759 INFO L158 Benchmark]: Toolchain (without parser) took 846.92ms. Allocated memory is still 92.3MB. Free memory was 64.4MB in the beginning and 41.5MB in the end (delta: 22.8MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2021-11-23 16:58:30,759 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 75.5MB. Free memory is still 43.9MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 16:58:30,761 INFO L158 Benchmark]: CACSL2BoogieTranslator took 280.33ms. Allocated memory is still 92.3MB. Free memory was 64.2MB in the beginning and 54.3MB in the end (delta: 9.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-23 16:58:30,762 INFO L158 Benchmark]: Boogie Procedure Inliner took 66.23ms. Allocated memory is still 92.3MB. Free memory was 54.2MB in the beginning and 52.7MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 16:58:30,763 INFO L158 Benchmark]: Boogie Preprocessor took 64.12ms. Allocated memory is still 92.3MB. Free memory was 52.7MB in the beginning and 51.6MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 16:58:30,764 INFO L158 Benchmark]: RCFGBuilder took 417.00ms. Allocated memory is still 92.3MB. Free memory was 51.6MB in the beginning and 41.5MB in the end (delta: 10.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-23 16:58:30,770 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 75.5MB. Free memory is still 43.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 280.33ms. Allocated memory is still 92.3MB. Free memory was 64.2MB in the beginning and 54.3MB in the end (delta: 9.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 66.23ms. Allocated memory is still 92.3MB. Free memory was 54.2MB in the beginning and 52.7MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 64.12ms. Allocated memory is still 92.3MB. Free memory was 52.7MB in the beginning and 51.6MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 417.00ms. Allocated memory is still 92.3MB. Free memory was 51.6MB in the beginning and 41.5MB in the end (delta: 10.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: - ExceptionOrErrorResult: UnsupportedOperationException: Set is immutable de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: UnsupportedOperationException: Set is immutable: de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.addAll(ImmutableSet.java:313) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-11-23 16:58:30,856 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a24484d-752b-4490-a968-4b0da3d0d19a/bin/utaipan-fb15Y9Yzbl/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 Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a24484d-752b-4490-a968-4b0da3d0d19a/bin/utaipan-fb15Y9Yzbl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a24484d-752b-4490-a968-4b0da3d0d19a/bin/utaipan-fb15Y9Yzbl/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a24484d-752b-4490-a968-4b0da3d0d19a/bin/utaipan-fb15Y9Yzbl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a24484d-752b-4490-a968-4b0da3d0d19a/bin/utaipan-fb15Y9Yzbl/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-invgen/large_const.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a24484d-752b-4490-a968-4b0da3d0d19a/bin/utaipan-fb15Y9Yzbl/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a24484d-752b-4490-a968-4b0da3d0d19a/bin/utaipan-fb15Y9Yzbl --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 142d17131671d2eab991ea08656e3b8bfe555dee984fe7672c9a027e971df0f8 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-6a47aea [2021-11-23 16:58:33,659 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 16:58:33,662 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 16:58:33,705 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 16:58:33,706 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 16:58:33,711 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 16:58:33,714 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 16:58:33,722 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 16:58:33,726 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 16:58:33,738 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 16:58:33,740 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 16:58:33,743 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 16:58:33,743 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 16:58:33,747 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 16:58:33,749 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 16:58:33,753 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 16:58:33,754 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 16:58:33,755 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 16:58:33,757 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 16:58:33,760 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 16:58:33,762 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 16:58:33,764 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 16:58:33,766 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 16:58:33,767 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 16:58:33,771 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 16:58:33,772 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 16:58:33,773 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 16:58:33,774 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 16:58:33,775 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 16:58:33,776 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 16:58:33,777 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 16:58:33,778 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 16:58:33,779 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 16:58:33,780 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 16:58:33,782 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 16:58:33,783 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 16:58:33,784 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 16:58:33,784 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 16:58:33,785 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 16:58:33,786 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 16:58:33,787 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 16:58:33,788 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a24484d-752b-4490-a968-4b0da3d0d19a/bin/utaipan-fb15Y9Yzbl/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-23 16:58:33,821 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 16:58:33,822 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 16:58:33,822 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 16:58:33,822 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 16:58:33,823 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 16:58:33,824 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 16:58:33,824 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 16:58:33,824 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 16:58:33,824 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 16:58:33,825 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 16:58:33,825 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 16:58:33,825 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 16:58:33,826 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 16:58:33,826 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 16:58:33,827 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 16:58:33,827 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 16:58:33,827 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 16:58:33,827 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 16:58:33,828 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 16:58:33,828 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-23 16:58:33,828 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-23 16:58:33,828 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-23 16:58:33,829 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 16:58:33,829 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 16:58:33,829 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 16:58:33,829 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 16:58:33,830 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 16:58:33,830 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 16:58:33,830 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 16:58:33,831 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 16:58:33,831 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 16:58:33,831 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 16:58:33,831 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 16:58:33,832 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-23 16:58:33,832 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-23 16:58:33,832 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 16:58:33,832 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 16:58:33,833 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 16:58:33,833 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_4a24484d-752b-4490-a968-4b0da3d0d19a/bin/utaipan-fb15Y9Yzbl/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a24484d-752b-4490-a968-4b0da3d0d19a/bin/utaipan-fb15Y9Yzbl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 142d17131671d2eab991ea08656e3b8bfe555dee984fe7672c9a027e971df0f8 [2021-11-23 16:58:34,297 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 16:58:34,326 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 16:58:34,329 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 16:58:34,331 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 16:58:34,334 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 16:58:34,335 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a24484d-752b-4490-a968-4b0da3d0d19a/bin/utaipan-fb15Y9Yzbl/../../sv-benchmarks/c/loop-invgen/large_const.i [2021-11-23 16:58:34,419 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a24484d-752b-4490-a968-4b0da3d0d19a/bin/utaipan-fb15Y9Yzbl/data/ad9e08a79/b709b34c3b224f10b0c6e7496ee83cdd/FLAGc63eac189 [2021-11-23 16:58:35,117 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 16:58:35,118 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a24484d-752b-4490-a968-4b0da3d0d19a/sv-benchmarks/c/loop-invgen/large_const.i [2021-11-23 16:58:35,127 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a24484d-752b-4490-a968-4b0da3d0d19a/bin/utaipan-fb15Y9Yzbl/data/ad9e08a79/b709b34c3b224f10b0c6e7496ee83cdd/FLAGc63eac189 [2021-11-23 16:58:35,428 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a24484d-752b-4490-a968-4b0da3d0d19a/bin/utaipan-fb15Y9Yzbl/data/ad9e08a79/b709b34c3b224f10b0c6e7496ee83cdd [2021-11-23 16:58:35,432 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 16:58:35,436 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 16:58:35,441 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 16:58:35,442 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 16:58:35,446 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 16:58:35,447 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 04:58:35" (1/1) ... [2021-11-23 16:58:35,450 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34e0e1e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:58:35, skipping insertion in model container [2021-11-23 16:58:35,450 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 04:58:35" (1/1) ... [2021-11-23 16:58:35,462 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 16:58:35,485 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 16:58:35,656 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_4a24484d-752b-4490-a968-4b0da3d0d19a/sv-benchmarks/c/loop-invgen/large_const.i[893,906] [2021-11-23 16:58:35,674 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 16:58:35,688 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 16:58:35,707 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_4a24484d-752b-4490-a968-4b0da3d0d19a/sv-benchmarks/c/loop-invgen/large_const.i[893,906] [2021-11-23 16:58:35,714 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 16:58:35,758 INFO L208 MainTranslator]: Completed translation [2021-11-23 16:58:35,759 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:58:35 WrapperNode [2021-11-23 16:58:35,759 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 16:58:35,761 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 16:58:35,761 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 16:58:35,761 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 16:58:35,769 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:58:35" (1/1) ... [2021-11-23 16:58:35,790 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:58:35" (1/1) ... [2021-11-23 16:58:35,815 INFO L137 Inliner]: procedures = 16, calls = 7, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 63 [2021-11-23 16:58:35,816 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 16:58:35,817 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 16:58:35,817 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 16:58:35,817 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 16:58:35,824 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:58:35" (1/1) ... [2021-11-23 16:58:35,824 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:58:35" (1/1) ... [2021-11-23 16:58:35,827 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:58:35" (1/1) ... [2021-11-23 16:58:35,828 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:58:35" (1/1) ... [2021-11-23 16:58:35,833 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:58:35" (1/1) ... [2021-11-23 16:58:35,846 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:58:35" (1/1) ... [2021-11-23 16:58:35,848 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:58:35" (1/1) ... [2021-11-23 16:58:35,851 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 16:58:35,852 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 16:58:35,852 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 16:58:35,852 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 16:58:35,853 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:58:35" (1/1) ... [2021-11-23 16:58:35,866 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 16:58:35,882 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a24484d-752b-4490-a968-4b0da3d0d19a/bin/utaipan-fb15Y9Yzbl/z3 [2021-11-23 16:58:35,911 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a24484d-752b-4490-a968-4b0da3d0d19a/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 16:58:35,922 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a24484d-752b-4490-a968-4b0da3d0d19a/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 16:58:35,951 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 16:58:35,951 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-23 16:58:35,951 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 16:58:35,951 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 16:58:36,032 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 16:58:36,034 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 16:58:36,269 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 16:58:36,276 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 16:58:36,276 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-23 16:58:36,279 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 04:58:36 BoogieIcfgContainer [2021-11-23 16:58:36,279 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 16:58:36,281 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 16:58:36,293 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 16:58:36,297 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 16:58:36,297 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 04:58:35" (1/3) ... [2021-11-23 16:58:36,298 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79089ea4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 04:58:36, skipping insertion in model container [2021-11-23 16:58:36,298 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:58:35" (2/3) ... [2021-11-23 16:58:36,299 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79089ea4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 04:58:36, skipping insertion in model container [2021-11-23 16:58:36,299 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 04:58:36" (3/3) ... [2021-11-23 16:58:36,301 INFO L111 eAbstractionObserver]: Analyzing ICFG large_const.i [2021-11-23 16:58:36,307 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 16:58:36,322 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 16:58:36,416 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 16:58:36,431 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 [2021-11-23 16:58:36,431 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-23 16:58:36,466 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 15 states have (on average 1.6666666666666667) internal successors, (25), 16 states have internal predecessors, (25), 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) [2021-11-23 16:58:36,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-23 16:58:36,473 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 16:58:36,474 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 16:58:36,475 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 16:58:36,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 16:58:36,483 INFO L85 PathProgramCache]: Analyzing trace with hash 200473929, now seen corresponding path program 1 times [2021-11-23 16:58:36,514 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 16:58:36,516 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1123763121] [2021-11-23 16:58:36,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:58:36,518 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 16:58:36,518 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a24484d-752b-4490-a968-4b0da3d0d19a/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 16:58:36,528 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a24484d-752b-4490-a968-4b0da3d0d19a/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 16:58:36,578 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a24484d-752b-4490-a968-4b0da3d0d19a/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-23 16:58:36,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 16:58:36,648 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-23 16:58:36,653 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 16:58:36,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 16:58:36,712 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 16:58:36,713 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 16:58:36,713 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1123763121] [2021-11-23 16:58:36,714 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1123763121] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 16:58:36,715 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 16:58:36,715 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 16:58:36,717 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277958985] [2021-11-23 16:58:36,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 16:58:36,724 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-23 16:58:36,725 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 16:58:36,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-23 16:58:36,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 16:58:36,779 INFO L87 Difference]: Start difference. First operand has 17 states, 15 states have (on average 1.6666666666666667) internal successors, (25), 16 states have internal predecessors, (25), 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 2 states, 2 states have (on average 4.0) internal successors, (8), 2 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) [2021-11-23 16:58:36,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 16:58:36,799 INFO L93 Difference]: Finished difference Result 27 states and 37 transitions. [2021-11-23 16:58:36,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-23 16:58:36,802 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 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) Word has length 8 [2021-11-23 16:58:36,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 16:58:36,813 INFO L225 Difference]: With dead ends: 27 [2021-11-23 16:58:36,813 INFO L226 Difference]: Without dead ends: 13 [2021-11-23 16:58:36,817 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 16:58:36,823 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 16:58:36,825 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 16:58:36,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2021-11-23 16:58:36,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2021-11-23 16:58:36,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 12 states have internal predecessors, (16), 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) [2021-11-23 16:58:36,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 16 transitions. [2021-11-23 16:58:36,879 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 16 transitions. Word has length 8 [2021-11-23 16:58:36,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 16:58:36,880 INFO L470 AbstractCegarLoop]: Abstraction has 13 states and 16 transitions. [2021-11-23 16:58:36,880 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 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) [2021-11-23 16:58:36,881 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 16 transitions. [2021-11-23 16:58:36,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-23 16:58:36,882 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 16:58:36,882 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 16:58:36,900 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a24484d-752b-4490-a968-4b0da3d0d19a/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-23 16:58:37,100 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a24484d-752b-4490-a968-4b0da3d0d19a/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 16:58:37,100 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 16:58:37,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 16:58:37,102 INFO L85 PathProgramCache]: Analyzing trace with hash 182003509, now seen corresponding path program 1 times [2021-11-23 16:58:37,102 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 16:58:37,103 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [938081705] [2021-11-23 16:58:37,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:58:37,103 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 16:58:37,105 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a24484d-752b-4490-a968-4b0da3d0d19a/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 16:58:37,106 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a24484d-752b-4490-a968-4b0da3d0d19a/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 16:58:37,126 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a24484d-752b-4490-a968-4b0da3d0d19a/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-23 16:58:37,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 16:58:37,156 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-23 16:58:37,158 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 16:58:37,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 16:58:37,299 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 16:58:37,300 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 16:58:37,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [938081705] [2021-11-23 16:58:37,300 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [938081705] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 16:58:37,301 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 16:58:37,301 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 16:58:37,301 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852019007] [2021-11-23 16:58:37,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 16:58:37,312 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 16:58:37,312 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 16:58:37,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 16:58:37,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-23 16:58:37,314 INFO L87 Difference]: Start difference. First operand 13 states and 16 transitions. Second operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 5 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) [2021-11-23 16:58:37,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 16:58:37,422 INFO L93 Difference]: Finished difference Result 21 states and 25 transitions. [2021-11-23 16:58:37,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 16:58:37,423 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 5 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) Word has length 8 [2021-11-23 16:58:37,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 16:58:37,424 INFO L225 Difference]: With dead ends: 21 [2021-11-23 16:58:37,425 INFO L226 Difference]: Without dead ends: 14 [2021-11-23 16:58:37,425 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-23 16:58:37,427 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 3 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 16:58:37,428 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 42 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 16:58:37,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2021-11-23 16:58:37,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2021-11-23 16:58:37,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 13 states have internal predecessors, (17), 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) [2021-11-23 16:58:37,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 17 transitions. [2021-11-23 16:58:37,435 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 17 transitions. Word has length 8 [2021-11-23 16:58:37,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 16:58:37,436 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 17 transitions. [2021-11-23 16:58:37,436 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 5 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) [2021-11-23 16:58:37,436 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 17 transitions. [2021-11-23 16:58:37,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-23 16:58:37,437 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 16:58:37,437 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 16:58:37,454 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a24484d-752b-4490-a968-4b0da3d0d19a/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-23 16:58:37,650 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a24484d-752b-4490-a968-4b0da3d0d19a/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 16:58:37,650 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 16:58:37,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 16:58:37,651 INFO L85 PathProgramCache]: Analyzing trace with hash -52175062, now seen corresponding path program 1 times [2021-11-23 16:58:37,655 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 16:58:37,656 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1512344802] [2021-11-23 16:58:37,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:58:37,656 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 16:58:37,656 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a24484d-752b-4490-a968-4b0da3d0d19a/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 16:58:37,659 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a24484d-752b-4490-a968-4b0da3d0d19a/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 16:58:37,660 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a24484d-752b-4490-a968-4b0da3d0d19a/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-23 16:58:37,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 16:58:37,699 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-23 16:58:37,701 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 16:58:37,820 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 16:58:37,820 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 16:58:37,938 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 16:58:37,939 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 16:58:37,939 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1512344802] [2021-11-23 16:58:37,939 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1512344802] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 16:58:37,940 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [791805541] [2021-11-23 16:58:37,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:58:37,940 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-23 16:58:37,941 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a24484d-752b-4490-a968-4b0da3d0d19a/bin/utaipan-fb15Y9Yzbl/cvc4 [2021-11-23 16:58:37,943 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a24484d-752b-4490-a968-4b0da3d0d19a/bin/utaipan-fb15Y9Yzbl/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-23 16:58:37,970 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a24484d-752b-4490-a968-4b0da3d0d19a/bin/utaipan-fb15Y9Yzbl/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2021-11-23 16:58:38,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 16:58:38,032 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-23 16:58:38,034 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 16:58:38,128 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 16:58:38,129 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 16:58:38,190 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 16:58:38,192 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [791805541] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 16:58:38,193 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1566539542] [2021-11-23 16:58:38,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:58:38,194 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 16:58:38,194 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a24484d-752b-4490-a968-4b0da3d0d19a/bin/utaipan-fb15Y9Yzbl/z3 [2021-11-23 16:58:38,202 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a24484d-752b-4490-a968-4b0da3d0d19a/bin/utaipan-fb15Y9Yzbl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 16:58:38,223 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a24484d-752b-4490-a968-4b0da3d0d19a/bin/utaipan-fb15Y9Yzbl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-23 16:58:38,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 16:58:38,262 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-23 16:58:38,263 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 16:58:38,471 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 16:58:38,471 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 16:58:38,767 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 16:58:38,767 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1566539542] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 16:58:38,767 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-23 16:58:38,767 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 6, 8, 8] total 16 [2021-11-23 16:58:38,768 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573289460] [2021-11-23 16:58:38,768 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-23 16:58:38,769 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-23 16:58:38,769 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 16:58:38,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-23 16:58:38,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2021-11-23 16:58:38,771 INFO L87 Difference]: Start difference. First operand 14 states and 17 transitions. Second operand has 16 states, 16 states have (on average 1.875) internal successors, (30), 16 states have internal predecessors, (30), 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) [2021-11-23 16:58:39,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 16:58:39,618 INFO L93 Difference]: Finished difference Result 51 states and 67 transitions. [2021-11-23 16:58:39,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-23 16:58:39,620 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.875) internal successors, (30), 16 states have internal predecessors, (30), 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 11 [2021-11-23 16:58:39,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 16:58:39,621 INFO L225 Difference]: With dead ends: 51 [2021-11-23 16:58:39,621 INFO L226 Difference]: Without dead ends: 49 [2021-11-23 16:58:39,623 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=200, Invalid=556, Unknown=0, NotChecked=0, Total=756 [2021-11-23 16:58:39,625 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 85 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-23 16:58:39,626 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [85 Valid, 123 Invalid, 240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-23 16:58:39,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2021-11-23 16:58:39,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 30. [2021-11-23 16:58:39,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 29 states have (on average 1.3448275862068966) internal successors, (39), 29 states have internal predecessors, (39), 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) [2021-11-23 16:58:39,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 39 transitions. [2021-11-23 16:58:39,636 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 39 transitions. Word has length 11 [2021-11-23 16:58:39,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 16:58:39,636 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 39 transitions. [2021-11-23 16:58:39,637 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.875) internal successors, (30), 16 states have internal predecessors, (30), 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) [2021-11-23 16:58:39,637 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 39 transitions. [2021-11-23 16:58:39,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-23 16:58:39,638 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 16:58:39,638 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 16:58:39,655 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a24484d-752b-4490-a968-4b0da3d0d19a/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-23 16:58:39,892 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a24484d-752b-4490-a968-4b0da3d0d19a/bin/utaipan-fb15Y9Yzbl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-23 16:58:40,047 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a24484d-752b-4490-a968-4b0da3d0d19a/bin/utaipan-fb15Y9Yzbl/cvc4 --incremental --print-success --lang smt (5)] Ended with exit code 0 [2021-11-23 16:58:40,246 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a24484d-752b-4490-a968-4b0da3d0d19a/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a24484d-752b-4490-a968-4b0da3d0d19a/bin/utaipan-fb15Y9Yzbl/z3 -smt2 -in SMTLIB2_COMPLIANT=true,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a24484d-752b-4490-a968-4b0da3d0d19a/bin/utaipan-fb15Y9Yzbl/cvc4 --incremental --print-success --lang smt [2021-11-23 16:58:40,246 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 16:58:40,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 16:58:40,247 INFO L85 PathProgramCache]: Analyzing trace with hash 566429229, now seen corresponding path program 1 times [2021-11-23 16:58:40,247 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 16:58:40,248 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [932117834] [2021-11-23 16:58:40,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:58:40,248 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 16:58:40,248 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a24484d-752b-4490-a968-4b0da3d0d19a/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 16:58:40,249 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a24484d-752b-4490-a968-4b0da3d0d19a/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 16:58:40,260 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a24484d-752b-4490-a968-4b0da3d0d19a/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-23 16:58:40,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 16:58:40,307 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-23 16:58:40,308 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 16:58:40,419 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 16:58:40,420 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 16:58:40,530 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 16:58:40,531 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 16:58:40,531 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [932117834] [2021-11-23 16:58:40,531 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [932117834] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 16:58:40,531 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [322244846] [2021-11-23 16:58:40,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:58:40,532 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-23 16:58:40,532 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a24484d-752b-4490-a968-4b0da3d0d19a/bin/utaipan-fb15Y9Yzbl/cvc4 [2021-11-23 16:58:40,538 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a24484d-752b-4490-a968-4b0da3d0d19a/bin/utaipan-fb15Y9Yzbl/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-23 16:58:40,575 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a24484d-752b-4490-a968-4b0da3d0d19a/bin/utaipan-fb15Y9Yzbl/cvc4 --incremental --print-success --lang smt (8)] Waiting until timeout for monitored process [2021-11-23 16:58:40,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 16:58:40,620 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-23 16:58:40,621 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 16:58:40,714 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 16:58:40,717 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 16:58:40,833 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 16:58:40,833 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [322244846] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 16:58:40,834 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [612422225] [2021-11-23 16:58:40,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:58:40,834 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 16:58:40,834 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a24484d-752b-4490-a968-4b0da3d0d19a/bin/utaipan-fb15Y9Yzbl/z3 [2021-11-23 16:58:40,836 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a24484d-752b-4490-a968-4b0da3d0d19a/bin/utaipan-fb15Y9Yzbl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 16:58:40,876 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a24484d-752b-4490-a968-4b0da3d0d19a/bin/utaipan-fb15Y9Yzbl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-23 16:58:40,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 16:58:40,913 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-23 16:58:40,914 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 16:58:40,994 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 16:58:40,994 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 16:58:41,068 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 16:58:41,068 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [612422225] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 16:58:41,070 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-23 16:58:41,070 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 7, 7, 7, 7] total 12 [2021-11-23 16:58:41,071 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269797149] [2021-11-23 16:58:41,071 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-23 16:58:41,071 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-23 16:58:41,071 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 16:58:41,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-23 16:58:41,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2021-11-23 16:58:41,073 INFO L87 Difference]: Start difference. First operand 30 states and 39 transitions. Second operand has 12 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 12 states have internal predecessors, (26), 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) [2021-11-23 16:58:41,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 16:58:41,590 INFO L93 Difference]: Finished difference Result 74 states and 96 transitions. [2021-11-23 16:58:41,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-23 16:58:41,591 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 12 states have internal predecessors, (26), 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 12 [2021-11-23 16:58:41,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 16:58:41,593 INFO L225 Difference]: With dead ends: 74 [2021-11-23 16:58:41,593 INFO L226 Difference]: Without dead ends: 72 [2021-11-23 16:58:41,594 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=173, Invalid=427, Unknown=0, NotChecked=0, Total=600 [2021-11-23 16:58:41,595 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 92 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 16:58:41,596 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [92 Valid, 97 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 16:58:41,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2021-11-23 16:58:41,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 39. [2021-11-23 16:58:41,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 38 states have (on average 1.4473684210526316) internal successors, (55), 38 states have internal predecessors, (55), 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) [2021-11-23 16:58:41,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 55 transitions. [2021-11-23 16:58:41,616 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 55 transitions. Word has length 12 [2021-11-23 16:58:41,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 16:58:41,617 INFO L470 AbstractCegarLoop]: Abstraction has 39 states and 55 transitions. [2021-11-23 16:58:41,617 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 12 states have internal predecessors, (26), 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) [2021-11-23 16:58:41,619 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 55 transitions. [2021-11-23 16:58:41,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-23 16:58:41,620 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 16:58:41,620 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 16:58:41,630 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a24484d-752b-4490-a968-4b0da3d0d19a/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-23 16:58:41,822 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a24484d-752b-4490-a968-4b0da3d0d19a/bin/utaipan-fb15Y9Yzbl/cvc4 --incremental --print-success --lang smt (8)] Forceful destruction successful, exit code 0 [2021-11-23 16:58:42,047 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a24484d-752b-4490-a968-4b0da3d0d19a/bin/utaipan-fb15Y9Yzbl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-23 16:58:42,221 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a24484d-752b-4490-a968-4b0da3d0d19a/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a24484d-752b-4490-a968-4b0da3d0d19a/bin/utaipan-fb15Y9Yzbl/cvc4 --incremental --print-success --lang smt,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a24484d-752b-4490-a968-4b0da3d0d19a/bin/utaipan-fb15Y9Yzbl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 16:58:42,222 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 16:58:42,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 16:58:42,222 INFO L85 PathProgramCache]: Analyzing trace with hash 623687531, now seen corresponding path program 1 times [2021-11-23 16:58:42,223 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 16:58:42,223 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [719908170] [2021-11-23 16:58:42,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:58:42,223 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 16:58:42,223 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a24484d-752b-4490-a968-4b0da3d0d19a/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 16:58:42,224 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a24484d-752b-4490-a968-4b0da3d0d19a/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 16:58:42,226 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a24484d-752b-4490-a968-4b0da3d0d19a/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-23 16:58:42,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 16:58:42,259 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-23 16:58:42,261 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 16:58:42,329 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 16:58:42,330 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 16:58:42,435 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 16:58:42,436 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 16:58:42,436 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [719908170] [2021-11-23 16:58:42,436 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [719908170] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 16:58:42,436 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2049913838] [2021-11-23 16:58:42,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:58:42,437 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-23 16:58:42,437 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a24484d-752b-4490-a968-4b0da3d0d19a/bin/utaipan-fb15Y9Yzbl/cvc4 [2021-11-23 16:58:42,440 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a24484d-752b-4490-a968-4b0da3d0d19a/bin/utaipan-fb15Y9Yzbl/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-23 16:58:42,458 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a24484d-752b-4490-a968-4b0da3d0d19a/bin/utaipan-fb15Y9Yzbl/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2021-11-23 16:58:42,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 16:58:42,505 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-23 16:58:42,506 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 16:58:42,577 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 16:58:42,577 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 16:58:42,626 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 16:58:42,628 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2049913838] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 16:58:42,628 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [236578766] [2021-11-23 16:58:42,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:58:42,628 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 16:58:42,629 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a24484d-752b-4490-a968-4b0da3d0d19a/bin/utaipan-fb15Y9Yzbl/z3 [2021-11-23 16:58:42,630 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a24484d-752b-4490-a968-4b0da3d0d19a/bin/utaipan-fb15Y9Yzbl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 16:58:42,658 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a24484d-752b-4490-a968-4b0da3d0d19a/bin/utaipan-fb15Y9Yzbl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-23 16:58:42,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 16:58:42,685 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-23 16:58:42,686 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 16:58:42,860 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 16:58:42,860 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 16:58:43,183 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 16:58:43,184 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [236578766] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 16:58:43,184 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-23 16:58:43,184 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 6, 8, 8] total 16 [2021-11-23 16:58:43,185 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928944619] [2021-11-23 16:58:43,185 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-23 16:58:43,185 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-23 16:58:43,185 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 16:58:43,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-23 16:58:43,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2021-11-23 16:58:43,187 INFO L87 Difference]: Start difference. First operand 39 states and 55 transitions. Second operand has 16 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 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) [2021-11-23 16:58:43,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 16:58:43,787 INFO L93 Difference]: Finished difference Result 74 states and 101 transitions. [2021-11-23 16:58:43,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-23 16:58:43,789 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 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 12 [2021-11-23 16:58:43,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 16:58:43,790 INFO L225 Difference]: With dead ends: 74 [2021-11-23 16:58:43,790 INFO L226 Difference]: Without dead ends: 72 [2021-11-23 16:58:43,791 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=200, Invalid=556, Unknown=0, NotChecked=0, Total=756 [2021-11-23 16:58:43,792 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 62 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-23 16:58:43,793 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [62 Valid, 114 Invalid, 199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-23 16:58:43,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2021-11-23 16:58:43,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 47. [2021-11-23 16:58:43,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 46 states have (on average 1.5) internal successors, (69), 46 states have internal predecessors, (69), 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) [2021-11-23 16:58:43,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 69 transitions. [2021-11-23 16:58:43,805 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 69 transitions. Word has length 12 [2021-11-23 16:58:43,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 16:58:43,805 INFO L470 AbstractCegarLoop]: Abstraction has 47 states and 69 transitions. [2021-11-23 16:58:43,806 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 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) [2021-11-23 16:58:43,806 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 69 transitions. [2021-11-23 16:58:43,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-23 16:58:43,807 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 16:58:43,807 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 16:58:43,818 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a24484d-752b-4490-a968-4b0da3d0d19a/bin/utaipan-fb15Y9Yzbl/cvc4 --incremental --print-success --lang smt (11)] Forceful destruction successful, exit code 0 [2021-11-23 16:58:44,031 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a24484d-752b-4490-a968-4b0da3d0d19a/bin/utaipan-fb15Y9Yzbl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-11-23 16:58:44,217 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a24484d-752b-4490-a968-4b0da3d0d19a/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-23 16:58:44,409 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a24484d-752b-4490-a968-4b0da3d0d19a/bin/utaipan-fb15Y9Yzbl/cvc4 --incremental --print-success --lang smt,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a24484d-752b-4490-a968-4b0da3d0d19a/bin/utaipan-fb15Y9Yzbl/z3 -smt2 -in SMTLIB2_COMPLIANT=true,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a24484d-752b-4490-a968-4b0da3d0d19a/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 16:58:44,409 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 16:58:44,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 16:58:44,410 INFO L85 PathProgramCache]: Analyzing trace with hash 521583522, now seen corresponding path program 1 times [2021-11-23 16:58:44,410 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 16:58:44,410 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2090739042] [2021-11-23 16:58:44,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:58:44,411 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 16:58:44,411 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a24484d-752b-4490-a968-4b0da3d0d19a/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 16:58:44,412 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a24484d-752b-4490-a968-4b0da3d0d19a/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 16:58:44,415 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a24484d-752b-4490-a968-4b0da3d0d19a/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-23 16:58:44,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 16:58:44,446 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-23 16:58:44,448 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 16:58:44,569 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 16:58:44,570 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 16:58:44,686 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 16:58:44,687 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 16:58:44,687 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2090739042] [2021-11-23 16:58:44,687 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2090739042] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-23 16:58:44,687 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-23 16:58:44,687 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2021-11-23 16:58:44,688 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546984974] [2021-11-23 16:58:44,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 16:58:44,688 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 16:58:44,689 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 16:58:44,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 16:58:44,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-11-23 16:58:44,690 INFO L87 Difference]: Start difference. First operand 47 states and 69 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 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) [2021-11-23 16:58:44,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 16:58:44,722 INFO L93 Difference]: Finished difference Result 54 states and 76 transitions. [2021-11-23 16:58:44,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 16:58:44,723 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 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 15 [2021-11-23 16:58:44,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 16:58:44,724 INFO L225 Difference]: With dead ends: 54 [2021-11-23 16:58:44,724 INFO L226 Difference]: Without dead ends: 21 [2021-11-23 16:58:44,724 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-11-23 16:58:44,727 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 34 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 16:58:44,728 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 13 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 16:58:44,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2021-11-23 16:58:44,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 19. [2021-11-23 16:58:44,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 18 states have internal predecessors, (21), 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) [2021-11-23 16:58:44,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2021-11-23 16:58:44,735 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 15 [2021-11-23 16:58:44,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 16:58:44,735 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2021-11-23 16:58:44,735 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 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) [2021-11-23 16:58:44,736 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2021-11-23 16:58:44,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-23 16:58:44,736 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 16:58:44,736 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 16:58:44,750 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a24484d-752b-4490-a968-4b0da3d0d19a/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-23 16:58:44,948 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a24484d-752b-4490-a968-4b0da3d0d19a/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 16:58:44,949 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 16:58:44,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 16:58:44,949 INFO L85 PathProgramCache]: Analyzing trace with hash 1453371626, now seen corresponding path program 1 times [2021-11-23 16:58:44,949 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 16:58:44,949 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [758224316] [2021-11-23 16:58:44,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:58:44,950 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 16:58:44,950 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a24484d-752b-4490-a968-4b0da3d0d19a/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 16:58:44,951 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a24484d-752b-4490-a968-4b0da3d0d19a/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 16:58:44,954 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a24484d-752b-4490-a968-4b0da3d0d19a/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-23 16:58:44,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 16:58:44,996 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-23 16:58:44,997 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 16:58:45,150 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-23 16:58:45,150 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 16:58:45,239 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-23 16:58:45,239 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 16:58:45,239 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [758224316] [2021-11-23 16:58:45,240 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [758224316] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 16:58:45,240 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [153942497] [2021-11-23 16:58:45,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:58:45,240 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-23 16:58:45,240 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a24484d-752b-4490-a968-4b0da3d0d19a/bin/utaipan-fb15Y9Yzbl/cvc4 [2021-11-23 16:58:45,242 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a24484d-752b-4490-a968-4b0da3d0d19a/bin/utaipan-fb15Y9Yzbl/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-23 16:58:45,244 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a24484d-752b-4490-a968-4b0da3d0d19a/bin/utaipan-fb15Y9Yzbl/cvc4 --incremental --print-success --lang smt (15)] Waiting until timeout for monitored process [2021-11-23 16:58:45,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 16:58:45,309 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-23 16:58:45,310 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 16:58:45,443 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-23 16:58:45,443 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 16:58:45,481 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-23 16:58:45,481 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [153942497] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 16:58:45,481 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [493819930] [2021-11-23 16:58:45,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 16:58:45,481 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 16:58:45,482 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a24484d-752b-4490-a968-4b0da3d0d19a/bin/utaipan-fb15Y9Yzbl/z3 [2021-11-23 16:58:45,482 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a24484d-752b-4490-a968-4b0da3d0d19a/bin/utaipan-fb15Y9Yzbl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 16:58:45,502 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a24484d-752b-4490-a968-4b0da3d0d19a/bin/utaipan-fb15Y9Yzbl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-11-23 16:58:45,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 16:58:45,527 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-23 16:58:45,528 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 16:58:45,634 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-23 16:58:45,635 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 16:58:45,679 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-23 16:58:45,680 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [493819930] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 16:58:45,680 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-23 16:58:45,680 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 6, 5, 6, 5] total 14 [2021-11-23 16:58:45,680 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273673962] [2021-11-23 16:58:45,681 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-23 16:58:45,681 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-23 16:58:45,681 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 16:58:45,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-23 16:58:45,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2021-11-23 16:58:45,682 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand has 14 states, 14 states have (on average 2.642857142857143) internal successors, (37), 14 states have internal predecessors, (37), 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) [2021-11-23 16:58:45,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 16:58:45,738 INFO L93 Difference]: Finished difference Result 19 states and 21 transitions. [2021-11-23 16:58:45,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 16:58:45,739 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.642857142857143) internal successors, (37), 14 states have internal predecessors, (37), 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 17 [2021-11-23 16:58:45,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 16:58:45,739 INFO L225 Difference]: With dead ends: 19 [2021-11-23 16:58:45,739 INFO L226 Difference]: Without dead ends: 0 [2021-11-23 16:58:45,740 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2021-11-23 16:58:45,741 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 15 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 16:58:45,741 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 29 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 16:58:45,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-23 16:58:45,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-23 16:58:45,743 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) [2021-11-23 16:58:45,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-23 16:58:45,743 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2021-11-23 16:58:45,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 16:58:45,743 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-23 16:58:45,743 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.642857142857143) internal successors, (37), 14 states have internal predecessors, (37), 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) [2021-11-23 16:58:45,744 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-23 16:58:45,744 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-23 16:58:45,747 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-23 16:58:45,753 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a24484d-752b-4490-a968-4b0da3d0d19a/bin/utaipan-fb15Y9Yzbl/cvc4 --incremental --print-success --lang smt (15)] Forceful destruction successful, exit code 0 [2021-11-23 16:58:45,992 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a24484d-752b-4490-a968-4b0da3d0d19a/bin/utaipan-fb15Y9Yzbl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-11-23 16:58:46,164 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a24484d-752b-4490-a968-4b0da3d0d19a/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (14)] Ended with exit code 0 [2021-11-23 16:58:46,356 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a24484d-752b-4490-a968-4b0da3d0d19a/bin/utaipan-fb15Y9Yzbl/cvc4 --incremental --print-success --lang smt,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a24484d-752b-4490-a968-4b0da3d0d19a/bin/utaipan-fb15Y9Yzbl/z3 -smt2 -in SMTLIB2_COMPLIANT=true,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a24484d-752b-4490-a968-4b0da3d0d19a/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 16:58:46,358 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-11-23 16:58:47,435 INFO L858 garLoopResultBuilder]: For program point L31(line 31) no Hoare annotation was computed. [2021-11-23 16:58:47,435 INFO L858 garLoopResultBuilder]: For program point L19(line 19) no Hoare annotation was computed. [2021-11-23 16:58:47,436 INFO L858 garLoopResultBuilder]: For program point L40(lines 40 43) no Hoare annotation was computed. [2021-11-23 16:58:47,436 INFO L854 garLoopResultBuilder]: At program point L40-2(lines 34 44) the Hoare annotation is: (let ((.cse1 (= (_ bv4000 32) |ULTIMATE.start_main_~c1~0#1|)) (.cse2 (= (_ bv10000 32) |ULTIMATE.start_main_~c3~0#1|)) (.cse3 (= (_ bv2000 32) |ULTIMATE.start_main_~c2~0#1|))) (or (and (bvslt |ULTIMATE.start_main_~n~0#1| (_ bv2 32)) (let ((.cse0 (= |ULTIMATE.start_main_~i~0#1| (_ bv1 32)))) (or (and (= (_ bv10000 32) |ULTIMATE.start_main_~k~0#1|) .cse0 .cse1 .cse2 .cse3) (and (= |ULTIMATE.start_main_~k~0#1| (_ bv2000 32)) .cse1 .cse2 (not (bvslt |ULTIMATE.start_main_~i~0#1| |ULTIMATE.start_main_~n~0#1|)) .cse3) (and .cse0 (= |ULTIMATE.start_main_~k~0#1| (_ bv4000 32)) .cse1 .cse2 .cse3))) (bvslt (_ bv0 32) |ULTIMATE.start_main_~n~0#1|)) (and (= |ULTIMATE.start_main_~k~0#1| (_ bv0 32)) (= |ULTIMATE.start_main_~i~0#1| (_ bv0 32)) .cse1 .cse2 (bvslt |ULTIMATE.start_main_~n~0#1| (_ bv10 32)) .cse3 (bvsle (_ bv0 32) |ULTIMATE.start_main_~n~0#1|)))) [2021-11-23 16:58:47,436 INFO L858 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-11-23 16:58:47,436 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-11-23 16:58:47,436 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-11-23 16:58:47,436 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2021-11-23 16:58:47,437 INFO L858 garLoopResultBuilder]: For program point L37(line 37) no Hoare annotation was computed. [2021-11-23 16:58:47,437 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-11-23 16:58:47,437 INFO L854 garLoopResultBuilder]: At program point L46-2(lines 46 50) the Hoare annotation is: (let ((.cse0 (bvslt |ULTIMATE.start_main_~n~0#1| (_ bv2 32))) (.cse4 (not (bvslt |ULTIMATE.start_main_~i~0#1| |ULTIMATE.start_main_~n~0#1|))) (.cse3 (= (_ bv10000 32) |ULTIMATE.start_main_~c3~0#1|)) (.cse2 (= (_ bv4000 32) |ULTIMATE.start_main_~c1~0#1|)) (.cse5 (= (_ bv2000 32) |ULTIMATE.start_main_~c2~0#1|)) (.cse1 (bvslt (_ bv0 32) |ULTIMATE.start_main_~n~0#1|)) (.cse7 (= |ULTIMATE.start_main_~j~0#1| (_ bv0 32)))) (or (and .cse0 .cse1 .cse2 .cse3 (bvsgt |ULTIMATE.start_main_~k~0#1| (_ bv0 32)) .cse4 .cse5 (= |ULTIMATE.start_main_~j~0#1| (_ bv1 32))) (and .cse0 .cse1 .cse4 (let ((.cse6 (= |ULTIMATE.start_main_~i~0#1| (_ bv1 32)))) (or (and (= (_ bv10000 32) |ULTIMATE.start_main_~k~0#1|) .cse6 .cse2 .cse3 .cse5) (and .cse3 (or (and (= |ULTIMATE.start_main_~k~0#1| (_ bv2000 32)) .cse2 .cse5) (and .cse6 (= |ULTIMATE.start_main_~k~0#1| (_ bv4000 32)) .cse2 .cse5))))) .cse7) (and (= |ULTIMATE.start_main_~i~0#1| (_ bv0 32)) (not .cse1) .cse7 (bvsle (_ bv0 32) |ULTIMATE.start_main_~n~0#1|)))) [2021-11-23 16:58:47,437 INFO L858 garLoopResultBuilder]: For program point L46-3(lines 46 50) no Hoare annotation was computed. [2021-11-23 16:58:47,437 INFO L858 garLoopResultBuilder]: For program point L38(lines 38 43) no Hoare annotation was computed. [2021-11-23 16:58:47,437 INFO L858 garLoopResultBuilder]: For program point L34-2(lines 34 44) no Hoare annotation was computed. [2021-11-23 16:58:47,437 INFO L861 garLoopResultBuilder]: At program point L51(lines 24 52) the Hoare annotation is: true [2021-11-23 16:58:47,438 INFO L858 garLoopResultBuilder]: For program point L18(lines 18 20) no Hoare annotation was computed. [2021-11-23 16:58:47,438 INFO L854 garLoopResultBuilder]: At program point L18-2(lines 17 22) the Hoare annotation is: (and (bvslt |ULTIMATE.start_main_~n~0#1| (_ bv2 32)) (let ((.cse0 (not (= |ULTIMATE.start___VERIFIER_assert_~cond#1| (_ bv0 32)))) (.cse1 (= |ULTIMATE.start_main_~i~0#1| (_ bv1 32))) (.cse2 (= |ULTIMATE.start___VERIFIER_assert_~cond#1| (_ bv1 32))) (.cse3 (= (_ bv4000 32) |ULTIMATE.start_main_~c1~0#1|)) (.cse5 (= (_ bv2000 32) |ULTIMATE.start_main_~c2~0#1|)) (.cse4 (= (_ bv10000 32) |ULTIMATE.start_main_~c3~0#1|))) (or (and .cse0 (= (_ bv10000 32) |ULTIMATE.start_main_~k~0#1|) .cse1 .cse2 .cse3 .cse4 .cse5) (and (or (and .cse0 .cse2 (= |ULTIMATE.start_main_~k~0#1| (_ bv2000 32)) .cse3 .cse5) (and .cse1 .cse2 (= |ULTIMATE.start_main_~k~0#1| (_ bv4000 32)) .cse3 .cse5)) .cse4))) (bvslt (_ bv0 32) |ULTIMATE.start_main_~n~0#1|) (not (bvslt |ULTIMATE.start_main_~i~0#1| |ULTIMATE.start_main_~n~0#1|)) (= |ULTIMATE.start_main_~j~0#1| (_ bv0 32))) [2021-11-23 16:58:47,441 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2021-11-23 16:58:47,442 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-23 16:58:47,480 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 04:58:47 BoogieIcfgContainer [2021-11-23 16:58:47,490 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-23 16:58:47,491 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-23 16:58:47,491 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-23 16:58:47,492 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-23 16:58:47,492 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 04:58:36" (3/4) ... [2021-11-23 16:58:47,496 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-23 16:58:47,508 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2021-11-23 16:58:47,510 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-11-23 16:58:47,511 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-11-23 16:58:47,511 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-23 16:58:47,511 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-23 16:58:47,564 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a24484d-752b-4490-a968-4b0da3d0d19a/bin/utaipan-fb15Y9Yzbl/witness.graphml [2021-11-23 16:58:47,565 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-23 16:58:47,566 INFO L158 Benchmark]: Toolchain (without parser) took 12129.83ms. Allocated memory was 62.9MB in the beginning and 83.9MB in the end (delta: 21.0MB). Free memory was 41.8MB in the beginning and 33.0MB in the end (delta: 8.8MB). Peak memory consumption was 30.4MB. Max. memory is 16.1GB. [2021-11-23 16:58:47,566 INFO L158 Benchmark]: CDTParser took 0.37ms. Allocated memory is still 62.9MB. Free memory is still 43.3MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 16:58:47,566 INFO L158 Benchmark]: CACSL2BoogieTranslator took 319.29ms. Allocated memory is still 62.9MB. Free memory was 41.7MB in the beginning and 45.8MB in the end (delta: -4.1MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2021-11-23 16:58:47,567 INFO L158 Benchmark]: Boogie Procedure Inliner took 55.31ms. Allocated memory is still 62.9MB. Free memory was 45.6MB in the beginning and 44.1MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 16:58:47,567 INFO L158 Benchmark]: Boogie Preprocessor took 34.60ms. Allocated memory is still 62.9MB. Free memory was 44.1MB in the beginning and 43.0MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 16:58:47,568 INFO L158 Benchmark]: RCFGBuilder took 427.06ms. Allocated memory is still 62.9MB. Free memory was 43.0MB in the beginning and 33.2MB in the end (delta: 9.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-23 16:58:47,568 INFO L158 Benchmark]: TraceAbstraction took 11209.92ms. Allocated memory was 62.9MB in the beginning and 83.9MB in the end (delta: 21.0MB). Free memory was 32.6MB in the beginning and 36.4MB in the end (delta: -3.8MB). Peak memory consumption was 34.3MB. Max. memory is 16.1GB. [2021-11-23 16:58:47,569 INFO L158 Benchmark]: Witness Printer took 73.80ms. Allocated memory is still 83.9MB. Free memory was 36.4MB in the beginning and 33.0MB in the end (delta: 3.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-23 16:58:47,572 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37ms. Allocated memory is still 62.9MB. Free memory is still 43.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 319.29ms. Allocated memory is still 62.9MB. Free memory was 41.7MB in the beginning and 45.8MB in the end (delta: -4.1MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 55.31ms. Allocated memory is still 62.9MB. Free memory was 45.6MB in the beginning and 44.1MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 34.60ms. Allocated memory is still 62.9MB. Free memory was 44.1MB in the beginning and 43.0MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 427.06ms. Allocated memory is still 62.9MB. Free memory was 43.0MB in the beginning and 33.2MB in the end (delta: 9.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 11209.92ms. Allocated memory was 62.9MB in the beginning and 83.9MB in the end (delta: 21.0MB). Free memory was 32.6MB in the beginning and 36.4MB in the end (delta: -3.8MB). Peak memory consumption was 34.3MB. Max. memory is 16.1GB. * Witness Printer took 73.80ms. Allocated memory is still 83.9MB. Free memory was 36.4MB in the beginning and 33.0MB in the end (delta: 3.4MB). Peak memory consumption was 4.2MB. 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: 19]: 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, 17 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 11.0s, OverallIterations: 7, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.1s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 291 SdHoareTripleChecker+Valid, 1.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 291 mSDsluCounter, 440 SdHoareTripleChecker+Invalid, 0.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 336 mSDsCounter, 95 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 548 IncrementalHoareTripleChecker+Invalid, 643 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 95 mSolverCounterUnsat, 104 mSDtfsCounter, 548 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 369 GetRequests, 271 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 462 ImplicationChecksByTransitivity, 2.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=47occurred in iteration=5, InterpolantAutomatonStates: 71, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 7 MinimizatonAttempts, 79 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 11 NumberOfFragments, 257 HoareAnnotationTreeSize, 4 FomulaSimplifications, 760 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 4 FomulaSimplificationsInter, 969 FormulaSimplificationTreeSizeReductionInter, 0.9s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 3.3s InterpolantComputationTime, 187 NumberOfCodeBlocks, 187 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 330 ConstructedInterpolants, 0 QuantifiedInterpolants, 1335 SizeOfPredicates, 48 NumberOfNonLiveVariables, 621 ConjunctsInSsa, 100 ConjunctsInUnsatCore, 28 InterpolantComputations, 3 PerfectInterpolantSequences, 50/76 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: 1 - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: (((~bvslt32(n, 2bv32) && (((((((!(cond == 0bv32) && 10000bv32 == k) && i == 1bv32) && cond == 1bv32) && 4000bv32 == c1) && 10000bv32 == c3) && 2000bv32 == c2) || ((((((!(cond == 0bv32) && cond == 1bv32) && k == 2000bv32) && 4000bv32 == c1) && 2000bv32 == c2) || ((((i == 1bv32 && cond == 1bv32) && k == 4000bv32) && 4000bv32 == c1) && 2000bv32 == c2)) && 10000bv32 == c3))) && ~bvslt32(0bv32, n)) && !~bvslt32(i, n)) && j == 0bv32 - InvariantResult [Line: 34]: Loop Invariant Derived loop invariant: ((~bvslt32(n, 2bv32) && ((((((10000bv32 == k && i == 1bv32) && 4000bv32 == c1) && 10000bv32 == c3) && 2000bv32 == c2) || ((((k == 2000bv32 && 4000bv32 == c1) && 10000bv32 == c3) && !~bvslt32(i, n)) && 2000bv32 == c2)) || ((((i == 1bv32 && k == 4000bv32) && 4000bv32 == c1) && 10000bv32 == c3) && 2000bv32 == c2))) && ~bvslt32(0bv32, n)) || ((((((k == 0bv32 && i == 0bv32) && 4000bv32 == c1) && 10000bv32 == c3) && ~bvslt32(n, 10bv32)) && 2000bv32 == c2) && ~bvsle32(0bv32, n)) - InvariantResult [Line: 46]: Loop Invariant Derived loop invariant: ((((((((~bvslt32(n, 2bv32) && ~bvslt32(0bv32, n)) && 4000bv32 == c1) && 10000bv32 == c3) && ~bvsgt32(k, 0bv32)) && !~bvslt32(i, n)) && 2000bv32 == c2) && j == 1bv32) || ((((~bvslt32(n, 2bv32) && ~bvslt32(0bv32, n)) && !~bvslt32(i, n)) && (((((10000bv32 == k && i == 1bv32) && 4000bv32 == c1) && 10000bv32 == c3) && 2000bv32 == c2) || (10000bv32 == c3 && (((k == 2000bv32 && 4000bv32 == c1) && 2000bv32 == c2) || (((i == 1bv32 && k == 4000bv32) && 4000bv32 == c1) && 2000bv32 == c2))))) && j == 0bv32)) || (((i == 0bv32 && !~bvslt32(0bv32, n)) && j == 0bv32) && ~bvsle32(0bv32, n)) RESULT: Ultimate proved your program to be correct! [2021-11-23 16:58:47,624 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a24484d-752b-4490-a968-4b0da3d0d19a/bin/utaipan-fb15Y9Yzbl/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