./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/mannadiv_valuebound100.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c130e2a-8424-4ee9-847f-7255a29ee723/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c130e2a-8424-4ee9-847f-7255a29ee723/bin/utaipan-EQgc7hIp5V/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c130e2a-8424-4ee9-847f-7255a29ee723/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c130e2a-8424-4ee9-847f-7255a29ee723/bin/utaipan-EQgc7hIp5V/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/mannadiv_valuebound100.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c130e2a-8424-4ee9-847f-7255a29ee723/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c130e2a-8424-4ee9-847f-7255a29ee723/bin/utaipan-EQgc7hIp5V --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 4f0dc25e497896e48962fc4f59a3ea4856b5eb0408b9845e68b04a0b0a132067 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 02:38:57,298 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 02:38:57,301 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 02:38:57,337 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 02:38:57,338 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 02:38:57,340 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 02:38:57,342 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 02:38:57,345 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 02:38:57,352 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 02:38:57,354 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 02:38:57,355 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 02:38:57,358 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 02:38:57,361 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 02:38:57,369 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 02:38:57,373 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 02:38:57,377 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 02:38:57,378 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 02:38:57,383 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 02:38:57,385 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 02:38:57,389 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 02:38:57,395 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 02:38:57,401 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 02:38:57,403 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 02:38:57,404 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 02:38:57,408 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 02:38:57,409 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 02:38:57,410 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 02:38:57,411 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 02:38:57,411 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 02:38:57,413 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 02:38:57,413 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 02:38:57,414 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 02:38:57,416 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 02:38:57,417 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 02:38:57,418 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 02:38:57,419 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 02:38:57,420 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 02:38:57,423 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 02:38:57,424 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 02:38:57,425 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 02:38:57,426 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 02:38:57,427 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c130e2a-8424-4ee9-847f-7255a29ee723/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-23 02:38:57,477 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 02:38:57,477 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 02:38:57,478 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 02:38:57,478 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 02:38:57,486 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 02:38:57,487 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 02:38:57,487 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 02:38:57,487 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 02:38:57,488 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 02:38:57,488 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 02:38:57,489 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 02:38:57,490 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 02:38:57,490 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 02:38:57,490 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 02:38:57,491 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 02:38:57,491 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 02:38:57,491 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 02:38:57,492 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 02:38:57,492 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 02:38:57,493 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 02:38:57,493 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 02:38:57,493 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 02:38:57,494 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 02:38:57,494 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 02:38:57,494 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 02:38:57,494 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 02:38:57,496 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 02:38:57,497 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 02:38:57,497 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 02:38:57,497 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 02:38:57,498 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 02:38:57,498 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 02:38:57,499 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:38:57,499 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 02:38:57,499 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 02:38:57,500 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 02:38:57,500 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 02:38:57,500 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 02:38:57,500 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 02:38:57,501 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 02:38:57,501 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 02:38:57,501 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_4c130e2a-8424-4ee9-847f-7255a29ee723/bin/utaipan-EQgc7hIp5V/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c130e2a-8424-4ee9-847f-7255a29ee723/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4f0dc25e497896e48962fc4f59a3ea4856b5eb0408b9845e68b04a0b0a132067 [2021-11-23 02:38:57,828 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 02:38:57,867 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 02:38:57,870 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 02:38:57,872 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 02:38:57,872 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 02:38:57,874 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c130e2a-8424-4ee9-847f-7255a29ee723/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/nla-digbench-scaling/mannadiv_valuebound100.c [2021-11-23 02:38:57,975 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c130e2a-8424-4ee9-847f-7255a29ee723/bin/utaipan-EQgc7hIp5V/data/264947f4d/dda4a4e693c4475eba3247e70eb34e13/FLAG4e18faac7 [2021-11-23 02:38:58,591 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 02:38:58,592 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c130e2a-8424-4ee9-847f-7255a29ee723/sv-benchmarks/c/nla-digbench-scaling/mannadiv_valuebound100.c [2021-11-23 02:38:58,599 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c130e2a-8424-4ee9-847f-7255a29ee723/bin/utaipan-EQgc7hIp5V/data/264947f4d/dda4a4e693c4475eba3247e70eb34e13/FLAG4e18faac7 [2021-11-23 02:38:58,945 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c130e2a-8424-4ee9-847f-7255a29ee723/bin/utaipan-EQgc7hIp5V/data/264947f4d/dda4a4e693c4475eba3247e70eb34e13 [2021-11-23 02:38:58,949 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 02:38:58,950 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 02:38:58,953 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 02:38:58,953 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 02:38:58,957 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 02:38:58,958 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:38:58" (1/1) ... [2021-11-23 02:38:58,959 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c64b2b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:38:58, skipping insertion in model container [2021-11-23 02:38:58,960 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:38:58" (1/1) ... [2021-11-23 02:38:58,968 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 02:38:58,985 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 02:38:59,194 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_4c130e2a-8424-4ee9-847f-7255a29ee723/sv-benchmarks/c/nla-digbench-scaling/mannadiv_valuebound100.c[573,586] [2021-11-23 02:38:59,226 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:38:59,245 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 02:38:59,266 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_4c130e2a-8424-4ee9-847f-7255a29ee723/sv-benchmarks/c/nla-digbench-scaling/mannadiv_valuebound100.c[573,586] [2021-11-23 02:38:59,281 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:38:59,306 INFO L208 MainTranslator]: Completed translation [2021-11-23 02:38:59,307 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:38:59 WrapperNode [2021-11-23 02:38:59,307 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 02:38:59,309 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 02:38:59,310 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 02:38:59,310 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 02:38:59,320 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:38:59" (1/1) ... [2021-11-23 02:38:59,330 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:38:59" (1/1) ... [2021-11-23 02:38:59,355 INFO L137 Inliner]: procedures = 14, calls = 11, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 42 [2021-11-23 02:38:59,356 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 02:38:59,357 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 02:38:59,358 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 02:38:59,358 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 02:38:59,369 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:38:59" (1/1) ... [2021-11-23 02:38:59,370 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:38:59" (1/1) ... [2021-11-23 02:38:59,387 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:38:59" (1/1) ... [2021-11-23 02:38:59,387 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:38:59" (1/1) ... [2021-11-23 02:38:59,391 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:38:59" (1/1) ... [2021-11-23 02:38:59,396 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:38:59" (1/1) ... [2021-11-23 02:38:59,401 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:38:59" (1/1) ... [2021-11-23 02:38:59,409 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 02:38:59,412 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 02:38:59,413 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 02:38:59,413 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 02:38:59,414 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:38:59" (1/1) ... [2021-11-23 02:38:59,424 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:38:59,440 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c130e2a-8424-4ee9-847f-7255a29ee723/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:38:59,459 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c130e2a-8424-4ee9-847f-7255a29ee723/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 02:38:59,481 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c130e2a-8424-4ee9-847f-7255a29ee723/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 02:38:59,522 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 02:38:59,523 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-23 02:38:59,523 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-23 02:38:59,523 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 02:38:59,523 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 02:38:59,524 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 02:38:59,524 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-23 02:38:59,524 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-23 02:38:59,604 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 02:38:59,607 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 02:38:59,740 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 02:38:59,769 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 02:38:59,769 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-23 02:38:59,772 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:38:59 BoogieIcfgContainer [2021-11-23 02:38:59,773 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 02:38:59,776 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 02:38:59,776 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 02:38:59,780 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 02:38:59,780 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:38:58" (1/3) ... [2021-11-23 02:38:59,781 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31c71796 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:38:59, skipping insertion in model container [2021-11-23 02:38:59,782 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:38:59" (2/3) ... [2021-11-23 02:38:59,782 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31c71796 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:38:59, skipping insertion in model container [2021-11-23 02:38:59,783 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:38:59" (3/3) ... [2021-11-23 02:38:59,784 INFO L111 eAbstractionObserver]: Analyzing ICFG mannadiv_valuebound100.c [2021-11-23 02:38:59,791 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 02:38:59,792 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 02:38:59,854 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 02:38:59,864 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 02:38:59,864 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-23 02:38:59,885 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 10 states have (on average 1.4) internal successors, (14), 11 states have internal predecessors, (14), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-23 02:38:59,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-23 02:38:59,892 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:38:59,893 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:38:59,894 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:38:59,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:38:59,901 INFO L85 PathProgramCache]: Analyzing trace with hash 375362447, now seen corresponding path program 1 times [2021-11-23 02:38:59,911 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:38:59,911 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025286065] [2021-11-23 02:38:59,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:38:59,913 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:39:00,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:39:00,114 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-23 02:39:00,115 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:39:00,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025286065] [2021-11-23 02:39:00,116 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2025286065] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:39:00,117 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:39:00,117 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 02:39:00,119 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519483874] [2021-11-23 02:39:00,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:39:00,125 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-23 02:39:00,126 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:39:00,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-23 02:39:00,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 02:39:00,162 INFO L87 Difference]: Start difference. First operand has 18 states, 10 states have (on average 1.4) internal successors, (14), 11 states have internal predecessors, (14), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-23 02:39:00,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:39:00,257 INFO L93 Difference]: Finished difference Result 30 states and 39 transitions. [2021-11-23 02:39:00,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-23 02:39:00,274 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 13 [2021-11-23 02:39:00,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:39:00,283 INFO L225 Difference]: With dead ends: 30 [2021-11-23 02:39:00,283 INFO L226 Difference]: Without dead ends: 16 [2021-11-23 02:39:00,287 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 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 02:39:00,292 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 02:39:00,294 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 16 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 02:39:00,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-11-23 02:39:00,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2021-11-23 02:39:00,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 10 states have internal predecessors, (11), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-23 02:39:00,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2021-11-23 02:39:00,336 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 13 [2021-11-23 02:39:00,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:39:00,338 INFO L470 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2021-11-23 02:39:00,338 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-23 02:39:00,339 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2021-11-23 02:39:00,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-23 02:39:00,340 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:39:00,340 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:39:00,341 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 02:39:00,341 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:39:00,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:39:00,343 INFO L85 PathProgramCache]: Analyzing trace with hash 328203294, now seen corresponding path program 1 times [2021-11-23 02:39:00,343 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:39:00,343 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861228451] [2021-11-23 02:39:00,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:39:00,344 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:39:00,363 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 02:39:00,363 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2147170485] [2021-11-23 02:39:00,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:39:00,364 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:39:00,364 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c130e2a-8424-4ee9-847f-7255a29ee723/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:39:00,366 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c130e2a-8424-4ee9-847f-7255a29ee723/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:39:00,403 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c130e2a-8424-4ee9-847f-7255a29ee723/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-23 02:39:00,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:39:00,490 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-23 02:39:00,496 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:39:00,871 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-23 02:39:00,872 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 02:39:00,874 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:39:00,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861228451] [2021-11-23 02:39:00,875 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 02:39:00,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2147170485] [2021-11-23 02:39:00,877 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2147170485] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:39:00,878 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:39:00,878 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-23 02:39:00,879 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888031945] [2021-11-23 02:39:00,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:39:00,883 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 02:39:00,883 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:39:00,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 02:39:00,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-23 02:39:00,887 INFO L87 Difference]: Start difference. First operand 16 states and 18 transitions. Second operand has 8 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-23 02:39:00,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:39:00,978 INFO L93 Difference]: Finished difference Result 26 states and 29 transitions. [2021-11-23 02:39:00,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-23 02:39:00,979 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 13 [2021-11-23 02:39:00,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:39:00,981 INFO L225 Difference]: With dead ends: 26 [2021-11-23 02:39:00,981 INFO L226 Difference]: Without dead ends: 24 [2021-11-23 02:39:00,982 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-11-23 02:39:00,984 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 12 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:39:00,985 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 51 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 02:39:00,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2021-11-23 02:39:00,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 22. [2021-11-23 02:39:00,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 15 states have internal predecessors, (15), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-23 02:39:00,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2021-11-23 02:39:00,995 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 13 [2021-11-23 02:39:00,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:39:00,996 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions. [2021-11-23 02:39:00,996 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-23 02:39:00,997 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2021-11-23 02:39:00,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-23 02:39:00,998 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:39:00,998 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:39:01,043 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c130e2a-8424-4ee9-847f-7255a29ee723/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-23 02:39:01,219 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c130e2a-8424-4ee9-847f-7255a29ee723/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:39:01,220 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:39:01,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:39:01,221 INFO L85 PathProgramCache]: Analyzing trace with hash 927627110, now seen corresponding path program 1 times [2021-11-23 02:39:01,221 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:39:01,221 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197529822] [2021-11-23 02:39:01,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:39:01,222 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:39:01,245 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 02:39:01,245 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1882081152] [2021-11-23 02:39:01,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:39:01,246 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:39:01,246 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c130e2a-8424-4ee9-847f-7255a29ee723/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:39:01,259 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c130e2a-8424-4ee9-847f-7255a29ee723/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:39:01,264 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c130e2a-8424-4ee9-847f-7255a29ee723/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-23 02:39:01,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:39:01,322 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-23 02:39:01,324 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:39:01,526 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-23 02:39:01,527 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:39:01,800 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-23 02:39:01,800 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:39:01,801 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197529822] [2021-11-23 02:39:01,801 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 02:39:01,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1882081152] [2021-11-23 02:39:01,803 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1882081152] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:39:01,804 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1490084800] [2021-11-23 02:39:01,829 INFO L159 IcfgInterpreter]: Started Sifa with 16 locations of interest [2021-11-23 02:39:01,829 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 02:39:01,835 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 02:39:01,842 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 02:39:01,842 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 02:39:02,490 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 38 for LOIs [2021-11-23 02:39:02,511 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 66 for LOIs [2021-11-23 02:39:02,568 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 02:39:03,740 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [1490084800] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:39:03,740 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-11-23 02:39:03,741 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [8, 8] total 19 [2021-11-23 02:39:03,741 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973978017] [2021-11-23 02:39:03,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:39:03,742 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-23 02:39:03,743 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:39:03,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-23 02:39:03,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=276, Unknown=0, NotChecked=0, Total=342 [2021-11-23 02:39:03,744 INFO L87 Difference]: Start difference. First operand 22 states and 24 transitions. Second operand has 11 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 6 states have internal predecessors, (10), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-23 02:39:03,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:39:03,854 INFO L93 Difference]: Finished difference Result 30 states and 32 transitions. [2021-11-23 02:39:03,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-23 02:39:03,855 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 6 states have internal predecessors, (10), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 19 [2021-11-23 02:39:03,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:39:03,856 INFO L225 Difference]: With dead ends: 30 [2021-11-23 02:39:03,856 INFO L226 Difference]: Without dead ends: 23 [2021-11-23 02:39:03,857 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 34 SyntacticMatches, 4 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=66, Invalid=276, Unknown=0, NotChecked=0, Total=342 [2021-11-23 02:39:03,858 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 10 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 15 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:39:03,859 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 31 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 15 Unchecked, 0.1s Time] [2021-11-23 02:39:03,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-11-23 02:39:03,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2021-11-23 02:39:03,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 14 states have (on average 1.1428571428571428) internal successors, (16), 15 states have internal predecessors, (16), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-23 02:39:03,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2021-11-23 02:39:03,868 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 19 [2021-11-23 02:39:03,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:39:03,869 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2021-11-23 02:39:03,869 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 6 states have internal predecessors, (10), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-23 02:39:03,869 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2021-11-23 02:39:03,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-23 02:39:03,870 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:39:03,870 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:39:03,908 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c130e2a-8424-4ee9-847f-7255a29ee723/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-23 02:39:04,095 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c130e2a-8424-4ee9-847f-7255a29ee723/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:39:04,096 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:39:04,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:39:04,096 INFO L85 PathProgramCache]: Analyzing trace with hash 138347192, now seen corresponding path program 1 times [2021-11-23 02:39:04,096 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:39:04,097 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035539573] [2021-11-23 02:39:04,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:39:04,097 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:39:04,122 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 02:39:04,123 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [812998862] [2021-11-23 02:39:04,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:39:04,123 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:39:04,123 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c130e2a-8424-4ee9-847f-7255a29ee723/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:39:04,133 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c130e2a-8424-4ee9-847f-7255a29ee723/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:39:04,164 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c130e2a-8424-4ee9-847f-7255a29ee723/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-23 02:39:04,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:39:04,206 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-23 02:39:04,208 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:39:04,451 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-23 02:39:04,451 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:39:04,633 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-23 02:39:04,633 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:39:04,634 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035539573] [2021-11-23 02:39:04,634 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 02:39:04,634 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [812998862] [2021-11-23 02:39:04,634 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [812998862] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:39:04,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2145920056] [2021-11-23 02:39:04,638 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2021-11-23 02:39:04,638 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 02:39:04,639 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 02:39:04,639 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 02:39:04,639 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 02:39:05,755 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 33 for LOIs [2021-11-23 02:39:05,879 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 66 for LOIs [2021-11-23 02:39:05,915 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 02:39:06,824 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '530#(and (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (= __VERIFIER_assert_~cond 0) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2021-11-23 02:39:06,824 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-23 02:39:06,824 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-23 02:39:06,824 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 10 [2021-11-23 02:39:06,825 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056740716] [2021-11-23 02:39:06,825 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-23 02:39:06,825 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-23 02:39:06,826 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:39:06,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-23 02:39:06,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=355, Unknown=0, NotChecked=0, Total=420 [2021-11-23 02:39:06,827 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand has 10 states, 10 states have (on average 1.8) internal successors, (18), 9 states have internal predecessors, (18), 4 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-23 02:39:06,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:39:06,946 INFO L93 Difference]: Finished difference Result 33 states and 36 transitions. [2021-11-23 02:39:06,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-23 02:39:06,946 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.8) internal successors, (18), 9 states have internal predecessors, (18), 4 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 20 [2021-11-23 02:39:06,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:39:06,948 INFO L225 Difference]: With dead ends: 33 [2021-11-23 02:39:06,948 INFO L226 Difference]: Without dead ends: 29 [2021-11-23 02:39:06,949 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 34 SyntacticMatches, 5 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=80, Invalid=426, Unknown=0, NotChecked=0, Total=506 [2021-11-23 02:39:06,950 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 13 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:39:06,950 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 77 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 02:39:06,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-11-23 02:39:06,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 25. [2021-11-23 02:39:06,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 16 states have (on average 1.0625) internal successors, (17), 16 states have internal predecessors, (17), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-23 02:39:06,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 26 transitions. [2021-11-23 02:39:06,961 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 26 transitions. Word has length 20 [2021-11-23 02:39:06,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:39:06,961 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 26 transitions. [2021-11-23 02:39:06,962 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.8) internal successors, (18), 9 states have internal predecessors, (18), 4 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-23 02:39:06,962 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 26 transitions. [2021-11-23 02:39:06,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-23 02:39:06,963 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:39:06,963 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:39:07,011 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c130e2a-8424-4ee9-847f-7255a29ee723/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-23 02:39:07,183 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c130e2a-8424-4ee9-847f-7255a29ee723/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:39:07,184 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:39:07,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:39:07,184 INFO L85 PathProgramCache]: Analyzing trace with hash -459496832, now seen corresponding path program 1 times [2021-11-23 02:39:07,184 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:39:07,185 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681688930] [2021-11-23 02:39:07,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:39:07,185 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:39:07,198 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 02:39:07,198 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1664777573] [2021-11-23 02:39:07,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:39:07,198 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:39:07,199 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c130e2a-8424-4ee9-847f-7255a29ee723/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:39:07,199 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c130e2a-8424-4ee9-847f-7255a29ee723/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:39:07,215 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c130e2a-8424-4ee9-847f-7255a29ee723/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-23 02:39:07,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:39:07,249 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-23 02:39:07,251 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:39:07,341 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-23 02:39:07,342 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:39:07,475 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-23 02:39:07,475 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:39:07,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [681688930] [2021-11-23 02:39:07,475 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 02:39:07,476 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1664777573] [2021-11-23 02:39:07,476 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1664777573] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:39:07,476 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1075390041] [2021-11-23 02:39:07,479 INFO L159 IcfgInterpreter]: Started Sifa with 16 locations of interest [2021-11-23 02:39:07,479 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 02:39:07,480 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 02:39:07,480 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 02:39:07,480 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 02:39:08,421 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 65 for LOIs [2021-11-23 02:39:08,660 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 66 for LOIs [2021-11-23 02:39:08,690 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 02:39:09,689 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '788#(and (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (= __VERIFIER_assert_~cond 0) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2021-11-23 02:39:09,690 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-23 02:39:09,690 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-23 02:39:09,690 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 10 [2021-11-23 02:39:09,690 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860598169] [2021-11-23 02:39:09,690 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-23 02:39:09,691 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-23 02:39:09,691 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:39:09,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-23 02:39:09,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=389, Unknown=0, NotChecked=0, Total=462 [2021-11-23 02:39:09,693 INFO L87 Difference]: Start difference. First operand 25 states and 26 transitions. Second operand has 10 states, 9 states have (on average 2.0) internal successors, (18), 7 states have internal predecessors, (18), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2021-11-23 02:39:09,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:39:09,765 INFO L93 Difference]: Finished difference Result 25 states and 26 transitions. [2021-11-23 02:39:09,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 02:39:09,765 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.0) internal successors, (18), 7 states have internal predecessors, (18), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) Word has length 26 [2021-11-23 02:39:09,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:39:09,766 INFO L225 Difference]: With dead ends: 25 [2021-11-23 02:39:09,766 INFO L226 Difference]: Without dead ends: 0 [2021-11-23 02:39:09,767 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 53 SyntacticMatches, 3 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=87, Invalid=465, Unknown=0, NotChecked=0, Total=552 [2021-11-23 02:39:09,768 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 12 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 02:39:09,769 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 45 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 02:39:09,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-23 02:39:09,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-23 02:39:09,770 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 02:39:09,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-23 02:39:09,770 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 26 [2021-11-23 02:39:09,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:39:09,770 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-23 02:39:09,770 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.0) internal successors, (18), 7 states have internal predecessors, (18), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2021-11-23 02:39:09,770 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-23 02:39:09,771 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-23 02:39:09,773 INFO L764 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-23 02:39:09,817 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c130e2a-8424-4ee9-847f-7255a29ee723/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-23 02:39:09,999 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c130e2a-8424-4ee9-847f-7255a29ee723/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:39:10,001 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-11-23 02:39:10,602 INFO L854 garLoopResultBuilder]: At program point L35-2(lines 35 48) the Hoare annotation is: (let ((.cse0 (* |ULTIMATE.start_main_~x2~0#1| |ULTIMATE.start_main_~y1~0#1|)) (.cse1 (select |#memory_int| 1))) (and (= (select |#length| 3) 12) (<= |ULTIMATE.start_main_~x2~0#1| 2147483647) (= 11 (select |#length| 2)) (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) (= |ULTIMATE.start_main_~x1~0#1| (+ .cse0 |ULTIMATE.start_main_~y2~0#1|)) (not (= (ite (<= 0 |ULTIMATE.start_main_~x1~0#1|) 1 0) 0)) (= (select |#valid| 1) 1) (= (select |#valid| 0) 0) (<= 0 (+ |ULTIMATE.start_main_~x2~0#1| 2147483648)) (= (select |#valid| 2) 1) (= |#NULL.offset| 0) (not (= (ite (not (= |ULTIMATE.start_main_~x2~0#1| 0)) 1 0) 0)) (<= |ULTIMATE.start_main_~x1~0#1| 2147483647) (= (select .cse1 0) 48) (= |ULTIMATE.start_main_~x1~0#1| (+ .cse0 |ULTIMATE.start_main_~y2~0#1| |ULTIMATE.start_main_~y3~0#1|)) (= (select .cse1 1) 0) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))) [2021-11-23 02:39:10,603 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-11-23 02:39:10,603 INFO L858 garLoopResultBuilder]: For program point L29(line 29) no Hoare annotation was computed. [2021-11-23 02:39:10,603 INFO L854 garLoopResultBuilder]: At program point L40-2(lines 35 48) the Hoare annotation is: (let ((.cse0 (select |#memory_int| 1))) (and (= (select |#length| 3) 12) (<= |ULTIMATE.start_main_~x2~0#1| 2147483647) (= 11 (select |#length| 2)) (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) (not (= (ite (<= 0 |ULTIMATE.start_main_~x1~0#1|) 1 0) 0)) (= (select |#valid| 1) 1) (= (select |#valid| 0) 0) (<= 0 (+ |ULTIMATE.start_main_~x2~0#1| 2147483648)) (= (select |#valid| 2) 1) (= |#NULL.offset| 0) (not (= (ite (not (= |ULTIMATE.start_main_~x2~0#1| 0)) 1 0) 0)) (<= |ULTIMATE.start_main_~x1~0#1| 2147483647) (= (select .cse0 0) 48) (= |ULTIMATE.start_main_~x1~0#1| (+ (* |ULTIMATE.start_main_~x2~0#1| |ULTIMATE.start_main_~y1~0#1|) |ULTIMATE.start_main_~y2~0#1| |ULTIMATE.start_main_~y3~0#1|)) (= (select .cse0 1) 0) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))) [2021-11-23 02:39:10,604 INFO L854 garLoopResultBuilder]: At program point L36(line 36) the Hoare annotation is: (let ((.cse0 (select |#memory_int| 1))) (and (= (select |#length| 3) 12) (<= |ULTIMATE.start_main_~x2~0#1| 2147483647) (= 11 (select |#length| 2)) (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) (not (= (ite (<= 0 |ULTIMATE.start_main_~x1~0#1|) 1 0) 0)) (= (select |#valid| 1) 1) (= (select |#valid| 0) 0) (<= 0 (+ |ULTIMATE.start_main_~x2~0#1| 2147483648)) (= (select |#valid| 2) 1) (= |#NULL.offset| 0) (not (= (ite (not (= |ULTIMATE.start_main_~x2~0#1| 0)) 1 0) 0)) (<= |ULTIMATE.start_main_~x1~0#1| 2147483647) (= (select .cse0 0) 48) (= |ULTIMATE.start_main_~x1~0#1| (+ (* |ULTIMATE.start_main_~x2~0#1| |ULTIMATE.start_main_~y1~0#1|) |ULTIMATE.start_main_~y2~0#1| |ULTIMATE.start_main_~y3~0#1|)) (= (select .cse0 1) 0) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))) [2021-11-23 02:39:10,604 INFO L858 garLoopResultBuilder]: For program point L36-1(lines 35 48) no Hoare annotation was computed. [2021-11-23 02:39:10,604 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-11-23 02:39:10,604 INFO L854 garLoopResultBuilder]: At program point L28(line 28) the Hoare annotation is: (let ((.cse0 (select |#memory_int| 1))) (and (= (select |#length| 3) 12) (<= |ULTIMATE.start_main_~x2~0#1| 2147483647) (= 11 (select |#length| 2)) (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) (= (select |#valid| 1) 1) (= (select |#valid| 0) 0) (<= 0 (+ |ULTIMATE.start_main_~x2~0#1| 2147483648)) (= (select |#valid| 2) 1) (= |#NULL.offset| 0) (<= |ULTIMATE.start_main_~x1~0#1| 2147483647) (= (select .cse0 0) 48) (= (select .cse0 1) 0) (< 0 |#StackHeapBarrier|) (<= 0 (+ |ULTIMATE.start_main_~x1~0#1| 2147483648)) (= |#NULL.base| 0))) [2021-11-23 02:39:10,605 INFO L854 garLoopResultBuilder]: At program point L28-1(line 28) the Hoare annotation is: (let ((.cse0 (select |#memory_int| 1))) (and (= (select |#length| 3) 12) (<= |ULTIMATE.start_main_~x2~0#1| 2147483647) (= 11 (select |#length| 2)) (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) (not (= (ite (<= 0 |ULTIMATE.start_main_~x1~0#1|) 1 0) 0)) (= (select |#valid| 1) 1) (= (select |#valid| 0) 0) (<= 0 (+ |ULTIMATE.start_main_~x2~0#1| 2147483648)) (= (select |#valid| 2) 1) (= |#NULL.offset| 0) (<= |ULTIMATE.start_main_~x1~0#1| 2147483647) (= (select .cse0 0) 48) (= (select .cse0 1) 0) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))) [2021-11-23 02:39:10,605 INFO L861 garLoopResultBuilder]: At program point L49(line 49) the Hoare annotation is: true [2021-11-23 02:39:10,605 INFO L861 garLoopResultBuilder]: At program point assume_abort_if_notENTRY(lines 12 14) the Hoare annotation is: true [2021-11-23 02:39:10,605 INFO L858 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 12 14) no Hoare annotation was computed. [2021-11-23 02:39:10,606 INFO L858 garLoopResultBuilder]: For program point L17(lines 17 18) no Hoare annotation was computed. [2021-11-23 02:39:10,606 INFO L858 garLoopResultBuilder]: For program point L16(lines 16 19) no Hoare annotation was computed. [2021-11-23 02:39:10,606 INFO L861 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 15 21) the Hoare annotation is: true [2021-11-23 02:39:10,606 INFO L858 garLoopResultBuilder]: For program point L16-2(lines 15 21) no Hoare annotation was computed. [2021-11-23 02:39:10,607 INFO L858 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 15 21) no Hoare annotation was computed. [2021-11-23 02:39:10,607 INFO L858 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 18) no Hoare annotation was computed. [2021-11-23 02:39:10,611 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2021-11-23 02:39:10,613 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-23 02:39:10,632 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 02:39:10 BoogieIcfgContainer [2021-11-23 02:39:10,632 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-23 02:39:10,633 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-23 02:39:10,633 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-23 02:39:10,633 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-23 02:39:10,634 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:38:59" (3/4) ... [2021-11-23 02:39:10,637 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-23 02:39:10,643 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2021-11-23 02:39:10,644 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2021-11-23 02:39:10,648 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2021-11-23 02:39:10,649 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2021-11-23 02:39:10,649 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2021-11-23 02:39:10,650 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-23 02:39:10,686 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c130e2a-8424-4ee9-847f-7255a29ee723/bin/utaipan-EQgc7hIp5V/witness.graphml [2021-11-23 02:39:10,686 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-23 02:39:10,687 INFO L158 Benchmark]: Toolchain (without parser) took 11736.83ms. Allocated memory was 83.9MB in the beginning and 195.0MB in the end (delta: 111.1MB). Free memory was 47.4MB in the beginning and 101.1MB in the end (delta: -53.8MB). Peak memory consumption was 57.1MB. Max. memory is 16.1GB. [2021-11-23 02:39:10,688 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 83.9MB. Free memory is still 63.8MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 02:39:10,688 INFO L158 Benchmark]: CACSL2BoogieTranslator took 355.17ms. Allocated memory was 83.9MB in the beginning and 111.1MB in the end (delta: 27.3MB). Free memory was 47.1MB in the beginning and 87.9MB in the end (delta: -40.8MB). Peak memory consumption was 7.7MB. Max. memory is 16.1GB. [2021-11-23 02:39:10,689 INFO L158 Benchmark]: Boogie Procedure Inliner took 46.68ms. Allocated memory is still 111.1MB. Free memory was 87.9MB in the beginning and 86.6MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 02:39:10,689 INFO L158 Benchmark]: Boogie Preprocessor took 54.00ms. Allocated memory is still 111.1MB. Free memory was 86.6MB in the beginning and 85.6MB in the end (delta: 957.5kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 02:39:10,690 INFO L158 Benchmark]: RCFGBuilder took 360.95ms. Allocated memory is still 111.1MB. Free memory was 85.4MB in the beginning and 75.4MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-23 02:39:10,690 INFO L158 Benchmark]: TraceAbstraction took 10856.41ms. Allocated memory was 111.1MB in the beginning and 195.0MB in the end (delta: 83.9MB). Free memory was 74.9MB in the beginning and 103.2MB in the end (delta: -28.3MB). Peak memory consumption was 57.7MB. Max. memory is 16.1GB. [2021-11-23 02:39:10,691 INFO L158 Benchmark]: Witness Printer took 54.00ms. Allocated memory is still 195.0MB. Free memory was 103.2MB in the beginning and 101.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 02:39:10,693 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 83.9MB. Free memory is still 63.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 355.17ms. Allocated memory was 83.9MB in the beginning and 111.1MB in the end (delta: 27.3MB). Free memory was 47.1MB in the beginning and 87.9MB in the end (delta: -40.8MB). Peak memory consumption was 7.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 46.68ms. Allocated memory is still 111.1MB. Free memory was 87.9MB in the beginning and 86.6MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 54.00ms. Allocated memory is still 111.1MB. Free memory was 86.6MB in the beginning and 85.6MB in the end (delta: 957.5kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 360.95ms. Allocated memory is still 111.1MB. Free memory was 85.4MB in the beginning and 75.4MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 10856.41ms. Allocated memory was 111.1MB in the beginning and 195.0MB in the end (delta: 83.9MB). Free memory was 74.9MB in the beginning and 103.2MB in the end (delta: -28.3MB). Peak memory consumption was 57.7MB. Max. memory is 16.1GB. * Witness Printer took 54.00ms. Allocated memory is still 195.0MB. Free memory was 103.2MB in the beginning and 101.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 18]: 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 3 procedures, 18 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 10.8s, OverallIterations: 5, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.6s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 52 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 47 mSDsluCounter, 220 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 15 IncrementalHoareTripleChecker+Unchecked, 189 mSDsCounter, 18 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 220 IncrementalHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 18 mSolverCounterUnsat, 56 mSDtfsCounter, 220 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 208 GetRequests, 129 SyntacticMatches, 12 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 304 ImplicationChecksByTransitivity, 3.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=25occurred in iteration=4, InterpolantAutomatonStates: 36, 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, 5 MinimizatonAttempts, 6 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 14 PreInvPairs, 21 NumberOfFragments, 455 HoareAnnotationTreeSize, 14 FomulaSimplifications, 3 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 1286 FormulaSimplificationTreeSizeReductionInter, 0.6s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 91 NumberOfCodeBlocks, 91 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 148 ConstructedInterpolants, 0 QuantifiedInterpolants, 482 SizeOfPredicates, 20 NumberOfNonLiveVariables, 290 ConjunctsInSsa, 51 ConjunctsInUnsatCore, 8 InterpolantComputations, 2 PerfectInterpolantSequences, 42/50 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: OVERALL_TIME: 0.7s, ICFG_INTERPRETER_ENTERED_PROCEDURES: 3, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 16, DAG_INTERPRETER_EARLY_EXITS: 1, TOOLS_POST_APPLICATIONS: 13, TOOLS_POST_TIME: 0.1s, TOOLS_POST_CALL_APPLICATIONS: 10, TOOLS_POST_CALL_TIME: 0.3s, TOOLS_POST_RETURN_APPLICATIONS: 6, TOOLS_POST_RETURN_TIME: 0.1s, TOOLS_QUANTIFIERELIM_APPLICATIONS: 29, TOOLS_QUANTIFIERELIM_TIME: 0.5s, TOOLS_QUANTIFIERELIM_MAX_TIME: 0.1s, FLUID_QUERY_TIME: 0.0s, FLUID_QUERIES: 44, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 10, DOMAIN_JOIN_TIME: 0.1s, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME: 0.0s, DOMAIN_WIDEN_APPLICATIONS: 0, DOMAIN_WIDEN_TIME: 0.0s, DOMAIN_ISSUBSETEQ_APPLICATIONS: 0, DOMAIN_ISSUBSETEQ_TIME: 0.0s, DOMAIN_ISBOTTOM_APPLICATIONS: 16, DOMAIN_ISBOTTOM_TIME: 0.0s, LOOP_SUMMARIZER_APPLICATIONS: 0, LOOP_SUMMARIZER_CACHE_MISSES: 0, LOOP_SUMMARIZER_OVERALL_TIME: 0.0s, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME: 0.0s, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 0, CALL_SUMMARIZER_APPLICATIONS: 6, CALL_SUMMARIZER_CACHE_MISSES: 2, CALL_SUMMARIZER_OVERALL_TIME: 0.0s, CALL_SUMMARIZER_NEW_COMPUTATION_TIME: 0.0s, PROCEDURE_GRAPH_BUILDER_TIME: 0.0s, PATH_EXPR_TIME: 0.0s, REGEX_TO_DAG_TIME: 0.0s, DAG_COMPRESSION_TIME: 0.0s, DAG_COMPRESSION_PROCESSED_NODES: 121, DAG_COMPRESSION_RETAINED_NODES: 48, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 35]: Loop Invariant Derived loop invariant: ((((((((((((((((unknown-#length-unknown[3] == 12 && x2 <= 2147483647) && 11 == unknown-#length-unknown[2]) && 2 == unknown-#length-unknown[1]) && \valid[3] == 1) && !((if 0 <= x1 then 1 else 0) == 0)) && \valid[1] == 1) && \valid[0] == 0) && 0 <= x2 + 2147483648) && \valid[2] == 1) && #NULL == 0) && !((if !(x2 == 0) then 1 else 0) == 0)) && x1 <= 2147483647) && unknown-#memory_int-unknown[1][0] == 48) && x1 == x2 * y1 + y2 + y3) && unknown-#memory_int-unknown[1][1] == 0) && 0 < unknown-#StackHeapBarrier-unknown) && #NULL == 0 - InvariantResult [Line: 49]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2021-11-23 02:39:10,749 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c130e2a-8424-4ee9-847f-7255a29ee723/bin/utaipan-EQgc7hIp5V/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