./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-crafted/simple_vardep_2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a42fc92c-7ef1-4a02-a29c-bd3dfef39e05/bin/utaipan-SDwSMHVbGG/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a42fc92c-7ef1-4a02-a29c-bd3dfef39e05/bin/utaipan-SDwSMHVbGG/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a42fc92c-7ef1-4a02-a29c-bd3dfef39e05/bin/utaipan-SDwSMHVbGG/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a42fc92c-7ef1-4a02-a29c-bd3dfef39e05/bin/utaipan-SDwSMHVbGG/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-crafted/simple_vardep_2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a42fc92c-7ef1-4a02-a29c-bd3dfef39e05/bin/utaipan-SDwSMHVbGG/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a42fc92c-7ef1-4a02-a29c-bd3dfef39e05/bin/utaipan-SDwSMHVbGG --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 fe46ce852e38d642986eea92b9d22feb8ab5485ba6ec77375c5159c8bc28b93d ........................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-29 05:22:17,319 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-29 05:22:17,322 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-29 05:22:17,369 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-29 05:22:17,370 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-29 05:22:17,371 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-29 05:22:17,374 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-29 05:22:17,377 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-29 05:22:17,380 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-29 05:22:17,381 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-29 05:22:17,383 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-29 05:22:17,385 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-29 05:22:17,385 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-29 05:22:17,387 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-29 05:22:17,391 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-29 05:22:17,399 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-29 05:22:17,402 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-29 05:22:17,412 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-29 05:22:17,414 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-29 05:22:17,417 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-29 05:22:17,420 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-29 05:22:17,422 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-29 05:22:17,424 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-29 05:22:17,425 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-29 05:22:17,431 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-29 05:22:17,431 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-29 05:22:17,432 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-29 05:22:17,433 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-29 05:22:17,434 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-29 05:22:17,436 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-29 05:22:17,436 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-29 05:22:17,438 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-29 05:22:17,439 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-29 05:22:17,440 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-29 05:22:17,442 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-29 05:22:17,443 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-29 05:22:17,444 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-29 05:22:17,444 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-29 05:22:17,445 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-29 05:22:17,447 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-29 05:22:17,448 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-29 05:22:17,449 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a42fc92c-7ef1-4a02-a29c-bd3dfef39e05/bin/utaipan-SDwSMHVbGG/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-29 05:22:17,489 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-29 05:22:17,489 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-29 05:22:17,490 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-29 05:22:17,491 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-29 05:22:17,491 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-29 05:22:17,491 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-29 05:22:17,492 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-29 05:22:17,492 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-29 05:22:17,492 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-29 05:22:17,492 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-29 05:22:17,493 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-29 05:22:17,493 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-29 05:22:17,493 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-29 05:22:17,494 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-29 05:22:17,494 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-29 05:22:17,495 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-29 05:22:17,495 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-29 05:22:17,496 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-29 05:22:17,496 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-29 05:22:17,496 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-29 05:22:17,496 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-29 05:22:17,497 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-29 05:22:17,497 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-29 05:22:17,497 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-29 05:22:17,498 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-29 05:22:17,498 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-29 05:22:17,498 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-29 05:22:17,499 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-29 05:22:17,499 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-29 05:22:17,499 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-29 05:22:17,500 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 05:22:17,500 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-29 05:22:17,500 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-29 05:22:17,501 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-29 05:22:17,501 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-29 05:22:17,501 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-29 05:22:17,501 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-29 05:22:17,502 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-29 05:22:17,502 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-29 05:22:17,502 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_a42fc92c-7ef1-4a02-a29c-bd3dfef39e05/bin/utaipan-SDwSMHVbGG/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a42fc92c-7ef1-4a02-a29c-bd3dfef39e05/bin/utaipan-SDwSMHVbGG Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fe46ce852e38d642986eea92b9d22feb8ab5485ba6ec77375c5159c8bc28b93d [2021-10-29 05:22:17,832 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-29 05:22:17,872 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-29 05:22:17,875 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-29 05:22:17,877 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-29 05:22:17,878 INFO L275 PluginConnector]: CDTParser initialized [2021-10-29 05:22:17,879 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a42fc92c-7ef1-4a02-a29c-bd3dfef39e05/bin/utaipan-SDwSMHVbGG/../../sv-benchmarks/c/loop-crafted/simple_vardep_2.c [2021-10-29 05:22:17,980 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a42fc92c-7ef1-4a02-a29c-bd3dfef39e05/bin/utaipan-SDwSMHVbGG/data/7c99ce76d/4407ea5336ca4b6b99ab4372c10cf588/FLAG833fc1314 [2021-10-29 05:22:18,561 INFO L306 CDTParser]: Found 1 translation units. [2021-10-29 05:22:18,562 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a42fc92c-7ef1-4a02-a29c-bd3dfef39e05/sv-benchmarks/c/loop-crafted/simple_vardep_2.c [2021-10-29 05:22:18,570 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a42fc92c-7ef1-4a02-a29c-bd3dfef39e05/bin/utaipan-SDwSMHVbGG/data/7c99ce76d/4407ea5336ca4b6b99ab4372c10cf588/FLAG833fc1314 [2021-10-29 05:22:18,927 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a42fc92c-7ef1-4a02-a29c-bd3dfef39e05/bin/utaipan-SDwSMHVbGG/data/7c99ce76d/4407ea5336ca4b6b99ab4372c10cf588 [2021-10-29 05:22:18,934 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-29 05:22:18,937 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-29 05:22:18,940 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-29 05:22:18,940 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-29 05:22:18,944 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-29 05:22:18,945 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:22:18" (1/1) ... [2021-10-29 05:22:18,947 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@80db0ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:22:18, skipping insertion in model container [2021-10-29 05:22:18,948 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:22:18" (1/1) ... [2021-10-29 05:22:18,957 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-29 05:22:18,972 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-29 05:22:19,176 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a42fc92c-7ef1-4a02-a29c-bd3dfef39e05/sv-benchmarks/c/loop-crafted/simple_vardep_2.c[584,597] [2021-10-29 05:22:19,189 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 05:22:19,200 INFO L203 MainTranslator]: Completed pre-run [2021-10-29 05:22:19,215 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a42fc92c-7ef1-4a02-a29c-bd3dfef39e05/sv-benchmarks/c/loop-crafted/simple_vardep_2.c[584,597] [2021-10-29 05:22:19,220 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 05:22:19,237 INFO L208 MainTranslator]: Completed translation [2021-10-29 05:22:19,238 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:22:19 WrapperNode [2021-10-29 05:22:19,238 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-29 05:22:19,240 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-29 05:22:19,240 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-29 05:22:19,241 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-29 05:22:19,250 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:22:19" (1/1) ... [2021-10-29 05:22:19,259 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:22:19" (1/1) ... [2021-10-29 05:22:19,280 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-29 05:22:19,281 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-29 05:22:19,282 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-29 05:22:19,282 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-29 05:22:19,292 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:22:19" (1/1) ... [2021-10-29 05:22:19,292 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:22:19" (1/1) ... [2021-10-29 05:22:19,294 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:22:19" (1/1) ... [2021-10-29 05:22:19,294 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:22:19" (1/1) ... [2021-10-29 05:22:19,298 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:22:19" (1/1) ... [2021-10-29 05:22:19,303 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:22:19" (1/1) ... [2021-10-29 05:22:19,304 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:22:19" (1/1) ... [2021-10-29 05:22:19,306 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-29 05:22:19,308 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-29 05:22:19,308 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-29 05:22:19,308 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-29 05:22:19,309 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:22:19" (1/1) ... [2021-10-29 05:22:19,323 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 05:22:19,337 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a42fc92c-7ef1-4a02-a29c-bd3dfef39e05/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 05:22:19,352 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a42fc92c-7ef1-4a02-a29c-bd3dfef39e05/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-29 05:22:19,375 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a42fc92c-7ef1-4a02-a29c-bd3dfef39e05/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-29 05:22:19,411 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-29 05:22:19,411 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-29 05:22:19,411 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-29 05:22:19,412 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-29 05:22:19,669 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-29 05:22:19,669 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-29 05:22:19,673 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:22:19 BoogieIcfgContainer [2021-10-29 05:22:19,673 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-29 05:22:19,676 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-29 05:22:19,676 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-29 05:22:19,680 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-29 05:22:19,681 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 05:22:18" (1/3) ... [2021-10-29 05:22:19,682 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a3cf728 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:22:19, skipping insertion in model container [2021-10-29 05:22:19,682 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:22:19" (2/3) ... [2021-10-29 05:22:19,683 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a3cf728 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:22:19, skipping insertion in model container [2021-10-29 05:22:19,683 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:22:19" (3/3) ... [2021-10-29 05:22:19,685 INFO L111 eAbstractionObserver]: Analyzing ICFG simple_vardep_2.c [2021-10-29 05:22:19,692 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-29 05:22:19,693 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-29 05:22:19,769 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-29 05:22:19,778 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-29 05:22:19,791 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-29 05:22:19,822 INFO L276 IsEmpty]: Start isEmpty. Operand has 6 states, 4 states have (on average 1.75) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:22:19,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-29 05:22:19,843 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:22:19,844 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-29 05:22:19,845 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:22:19,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:22:19,852 INFO L85 PathProgramCache]: Analyzing trace with hash 1738899, now seen corresponding path program 1 times [2021-10-29 05:22:19,864 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:22:19,865 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412023226] [2021-10-29 05:22:19,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:22:19,866 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:22:20,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:22:20,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:22:20,397 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:22:20,397 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412023226] [2021-10-29 05:22:20,398 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [412023226] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 05:22:20,398 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:22:20,399 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-29 05:22:20,401 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452786382] [2021-10-29 05:22:20,413 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-29 05:22:20,414 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:22:20,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-29 05:22:20,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-29 05:22:20,440 INFO L87 Difference]: Start difference. First operand has 6 states, 4 states have (on average 1.75) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:22:20,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:22:20,500 INFO L93 Difference]: Finished difference Result 13 states and 17 transitions. [2021-10-29 05:22:20,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-29 05:22:20,503 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2021-10-29 05:22:20,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:22:20,515 INFO L225 Difference]: With dead ends: 13 [2021-10-29 05:22:20,516 INFO L226 Difference]: Without dead ends: 7 [2021-10-29 05:22:20,524 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-29 05:22:20,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2021-10-29 05:22:20,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2021-10-29 05:22:20,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:22:20,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2021-10-29 05:22:20,562 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 4 [2021-10-29 05:22:20,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:22:20,563 INFO L470 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2021-10-29 05:22:20,563 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:22:20,564 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2021-10-29 05:22:20,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-29 05:22:20,564 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:22:20,565 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2021-10-29 05:22:20,565 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-29 05:22:20,566 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:22:20,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:22:20,570 INFO L85 PathProgramCache]: Analyzing trace with hash 1671226539, now seen corresponding path program 1 times [2021-10-29 05:22:20,571 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:22:20,571 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909065997] [2021-10-29 05:22:20,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:22:20,572 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:22:20,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:22:20,839 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:22:20,839 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:22:20,841 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909065997] [2021-10-29 05:22:20,841 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [909065997] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-29 05:22:20,842 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [541024436] [2021-10-29 05:22:20,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:22:20,843 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 05:22:20,843 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a42fc92c-7ef1-4a02-a29c-bd3dfef39e05/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 05:22:20,849 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a42fc92c-7ef1-4a02-a29c-bd3dfef39e05/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 05:22:20,867 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a42fc92c-7ef1-4a02-a29c-bd3dfef39e05/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-29 05:22:20,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:22:20,993 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-29 05:22:20,998 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:22:21,263 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:22:21,263 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:22:21,888 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-29 05:22:21,888 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [541024436] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-29 05:22:21,889 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1204938495] [2021-10-29 05:22:21,916 INFO L159 IcfgInterpreter]: Started Sifa with 5 locations of interest [2021-10-29 05:22:21,916 INFO L166 IcfgInterpreter]: Building call graph [2021-10-29 05:22:21,922 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-29 05:22:21,930 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-29 05:22:21,930 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-29 05:22:21,967 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:22:21,993 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 05:22:21,996 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:22:21,998 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-10-29 05:22:22,000 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 05:22:22,000 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:22:22,001 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-10-29 05:22:22,005 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 128 [2021-10-29 05:22:22,043 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_9|], 21=[|v_#valid_10|]} [2021-10-29 05:22:22,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:22:22,062 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:22:22,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:22:22,075 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 9 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2021-10-29 05:22:22,077 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:22:22,081 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-29 05:22:22,083 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:22:22,085 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-29 05:22:22,085 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-29 05:22:22,087 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:22:22,142 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:22:22,156 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:22:22,157 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:22:22,159 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:22:22,166 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:22:22,168 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:22:22,169 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:22:22,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:22:22,183 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:22:22,185 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:22:22,192 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 30 [2021-10-29 05:22:22,193 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:22:22,198 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-10-29 05:22:22,199 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:22:22,201 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-10-29 05:22:22,202 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-10-29 05:22:22,202 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:22:22,233 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:22:22,236 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:22:22,238 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 100 [2021-10-29 05:22:22,240 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-29 05:22:22,241 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:125, output treesize:100 [2021-10-29 05:22:22,257 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:22:22,281 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 162 [2021-10-29 05:22:22,290 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:22:22,346 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:22:22,354 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:22:22,357 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:22:22,361 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:22:22,364 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:22:22,401 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:22:22,454 INFO L180 QuantifierPusher]: treesize reduction 30, result has 78.4 percent of original size [2021-10-29 05:22:22,464 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 95 [2021-10-29 05:22:22,492 INFO L180 QuantifierPusher]: treesize reduction 30, result has 78.4 percent of original size [2021-10-29 05:22:22,507 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 95 [2021-10-29 05:22:22,537 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-29 05:22:23,450 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-29 05:22:23,451 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-10-29 05:22:23,451 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 3] total 7 [2021-10-29 05:22:23,452 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530437930] [2021-10-29 05:22:23,453 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-29 05:22:23,453 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:22:23,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-29 05:22:23,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2021-10-29 05:22:23,455 INFO L87 Difference]: Start difference. First operand 7 states and 7 transitions. Second operand has 8 states, 8 states have (on average 1.75) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:22:23,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:22:23,528 INFO L93 Difference]: Finished difference Result 8 states and 8 transitions. [2021-10-29 05:22:23,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-29 05:22:23,529 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.75) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-10-29 05:22:23,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:22:23,529 INFO L225 Difference]: With dead ends: 8 [2021-10-29 05:22:23,530 INFO L226 Difference]: Without dead ends: 0 [2021-10-29 05:22:23,531 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2021-10-29 05:22:23,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-29 05:22:23,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-29 05:22:23,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:22:23,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-29 05:22:23,532 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 6 [2021-10-29 05:22:23,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:22:23,533 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-29 05:22:23,533 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.75) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:22:23,533 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-29 05:22:23,533 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-29 05:22:23,536 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 05:22:23,580 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a42fc92c-7ef1-4a02-a29c-bd3dfef39e05/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-10-29 05:22:23,756 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a42fc92c-7ef1-4a02-a29c-bd3dfef39e05/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 05:22:23,758 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-29 05:22:23,761 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:22:23,823 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-29 05:22:23,823 INFO L857 garLoopResultBuilder]: For program point L9(lines 9 11) no Hoare annotation was computed. [2021-10-29 05:22:23,825 INFO L853 garLoopResultBuilder]: At program point L9-2(lines 7 26) the Hoare annotation is: (or (and (= ULTIMATE.start_main_~k~0 0) (= ULTIMATE.start_main_~i~0 0) (= ULTIMATE.start_main_~j~0 0)) (let ((.cse0 (* 3 ULTIMATE.start_main_~i~0)) (.cse1 (* 2 ULTIMATE.start_main_~i~0))) (and (<= .cse0 ULTIMATE.start_main_~k~0) (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (<= ULTIMATE.start_main_~k~0 .cse0) (<= .cse1 ULTIMATE.start_main_~j~0) (<= ULTIMATE.start_main_~j~0 .cse1)))) [2021-10-29 05:22:23,825 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-29 05:22:23,826 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 10) no Hoare annotation was computed. [2021-10-29 05:22:23,827 INFO L857 garLoopResultBuilder]: For program point L10(line 10) no Hoare annotation was computed. [2021-10-29 05:22:23,831 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1] [2021-10-29 05:22:23,833 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-29 05:22:23,862 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.10 05:22:23 BoogieIcfgContainer [2021-10-29 05:22:23,863 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-29 05:22:23,864 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-29 05:22:23,864 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-29 05:22:23,864 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-29 05:22:23,865 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:22:19" (3/4) ... [2021-10-29 05:22:23,869 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-29 05:22:23,880 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2021-10-29 05:22:23,880 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-10-29 05:22:23,881 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-10-29 05:22:23,881 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-29 05:22:23,919 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a42fc92c-7ef1-4a02-a29c-bd3dfef39e05/bin/utaipan-SDwSMHVbGG/witness.graphml [2021-10-29 05:22:23,920 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-29 05:22:23,921 INFO L168 Benchmark]: Toolchain (without parser) took 4983.74 ms. Allocated memory was 83.9 MB in the beginning and 130.0 MB in the end (delta: 46.1 MB). Free memory was 50.1 MB in the beginning and 80.2 MB in the end (delta: -30.1 MB). Peak memory consumption was 14.8 MB. Max. memory is 16.1 GB. [2021-10-29 05:22:23,922 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 83.9 MB. Free memory was 62.8 MB in the beginning and 62.8 MB in the end (delta: 26.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 05:22:23,922 INFO L168 Benchmark]: CACSL2BoogieTranslator took 299.39 ms. Allocated memory was 83.9 MB in the beginning and 107.0 MB in the end (delta: 23.1 MB). Free memory was 49.9 MB in the beginning and 83.4 MB in the end (delta: -33.5 MB). Peak memory consumption was 7.9 MB. Max. memory is 16.1 GB. [2021-10-29 05:22:23,923 INFO L168 Benchmark]: Boogie Procedure Inliner took 40.46 ms. Allocated memory is still 107.0 MB. Free memory was 83.4 MB in the beginning and 82.2 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 05:22:23,924 INFO L168 Benchmark]: Boogie Preprocessor took 25.34 ms. Allocated memory is still 107.0 MB. Free memory was 81.9 MB in the beginning and 81.0 MB in the end (delta: 839.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 05:22:23,924 INFO L168 Benchmark]: RCFGBuilder took 365.80 ms. Allocated memory is still 107.0 MB. Free memory was 81.0 MB in the beginning and 71.2 MB in the end (delta: 9.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-29 05:22:23,925 INFO L168 Benchmark]: TraceAbstraction took 4187.39 ms. Allocated memory was 107.0 MB in the beginning and 130.0 MB in the end (delta: 23.1 MB). Free memory was 70.7 MB in the beginning and 82.3 MB in the end (delta: -11.6 MB). Peak memory consumption was 13.2 MB. Max. memory is 16.1 GB. [2021-10-29 05:22:23,926 INFO L168 Benchmark]: Witness Printer took 55.84 ms. Allocated memory is still 130.0 MB. Free memory was 82.3 MB in the beginning and 80.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 05:22:23,929 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 83.9 MB. Free memory was 62.8 MB in the beginning and 62.8 MB in the end (delta: 26.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 299.39 ms. Allocated memory was 83.9 MB in the beginning and 107.0 MB in the end (delta: 23.1 MB). Free memory was 49.9 MB in the beginning and 83.4 MB in the end (delta: -33.5 MB). Peak memory consumption was 7.9 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 40.46 ms. Allocated memory is still 107.0 MB. Free memory was 83.4 MB in the beginning and 82.2 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 25.34 ms. Allocated memory is still 107.0 MB. Free memory was 81.9 MB in the beginning and 81.0 MB in the end (delta: 839.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 365.80 ms. Allocated memory is still 107.0 MB. Free memory was 81.0 MB in the beginning and 71.2 MB in the end (delta: 9.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4187.39 ms. Allocated memory was 107.0 MB in the beginning and 130.0 MB in the end (delta: 23.1 MB). Free memory was 70.7 MB in the beginning and 82.3 MB in the end (delta: -11.6 MB). Peak memory consumption was 13.2 MB. Max. memory is 16.1 GB. * Witness Printer took 55.84 ms. Allocated memory is still 130.0 MB. Free memory was 82.3 MB in the beginning and 80.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s 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: 10]: 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, 6 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 4.0s, OverallIterations: 2, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 6 SDtfs, 6 SDslu, 5 SDs, 0 SdLazy, 17 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 25 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7occurred in iteration=1, InterpolantAutomatonStates: 9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 1 LocationsWithAnnotation, 1 PreInvPairs, 4 NumberOfFragments, 35 HoareAnnotationTreeSize, 1 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 1 FomulaSimplificationsInter, 21 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 16 NumberOfCodeBlocks, 16 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 18 ConstructedInterpolants, 0 QuantifiedInterpolants, 191 SizeOfPredicates, 4 NumberOfNonLiveVariables, 63 ConjunctsInSsa, 21 ConjunctsInUnsatCore, 4 InterpolantComputations, 1 PerfectInterpolantSequences, 1/6 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: 7]: Loop Invariant Derived loop invariant: ((k == 0 && i == 0) && j == 0) || ((((3 * i <= k && 1 <= cond) && k <= 3 * i) && 2 * i <= j) && j <= 2 * i) RESULT: Ultimate proved your program to be correct! [2021-10-29 05:22:23,962 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a42fc92c-7ef1-4a02-a29c-bd3dfef39e05/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...