./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/mannadiv_valuebound20.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e943c265 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ba3c94-08e1-4615-8d46-801a19ff3263/bin/utaipan-9zjyvhn0QE/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ba3c94-08e1-4615-8d46-801a19ff3263/bin/utaipan-9zjyvhn0QE/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ba3c94-08e1-4615-8d46-801a19ff3263/bin/utaipan-9zjyvhn0QE/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ba3c94-08e1-4615-8d46-801a19ff3263/bin/utaipan-9zjyvhn0QE/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/mannadiv_valuebound20.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ba3c94-08e1-4615-8d46-801a19ff3263/bin/utaipan-9zjyvhn0QE/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ba3c94-08e1-4615-8d46-801a19ff3263/bin/utaipan-9zjyvhn0QE --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 ...................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-e943c26 [2021-10-24 09:40:51,490 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-24 09:40:51,492 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-24 09:40:51,544 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-24 09:40:51,544 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-24 09:40:51,551 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-24 09:40:51,555 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-24 09:40:51,561 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-24 09:40:51,564 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-24 09:40:51,566 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-24 09:40:51,567 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-24 09:40:51,571 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-24 09:40:51,571 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-24 09:40:51,577 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-24 09:40:51,580 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-24 09:40:51,582 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-24 09:40:51,584 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-24 09:40:51,586 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-24 09:40:51,591 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-24 09:40:51,600 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-24 09:40:51,602 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-24 09:40:51,603 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-24 09:40:51,607 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-24 09:40:51,608 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-24 09:40:51,612 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-24 09:40:51,613 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-24 09:40:51,613 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-24 09:40:51,615 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-24 09:40:51,616 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-24 09:40:51,618 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-24 09:40:51,618 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-24 09:40:51,619 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-24 09:40:51,622 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-24 09:40:51,623 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-24 09:40:51,625 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-24 09:40:51,625 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-24 09:40:51,626 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-24 09:40:51,626 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-24 09:40:51,627 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-24 09:40:51,628 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-24 09:40:51,629 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-24 09:40:51,630 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ba3c94-08e1-4615-8d46-801a19ff3263/bin/utaipan-9zjyvhn0QE/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-24 09:40:51,679 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-24 09:40:51,679 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-24 09:40:51,681 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-24 09:40:51,681 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-24 09:40:51,681 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-24 09:40:51,681 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-24 09:40:51,682 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-24 09:40:51,682 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-24 09:40:51,688 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-24 09:40:51,688 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-24 09:40:51,689 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-24 09:40:51,690 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-24 09:40:51,690 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-24 09:40:51,690 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-24 09:40:51,691 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-24 09:40:51,692 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-24 09:40:51,692 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-24 09:40:51,692 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-24 09:40:51,693 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-24 09:40:51,693 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-24 09:40:51,693 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-24 09:40:51,694 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-24 09:40:51,694 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-24 09:40:51,694 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-24 09:40:51,694 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-24 09:40:51,695 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-24 09:40:51,695 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-24 09:40:51,695 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-24 09:40:51,695 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-24 09:40:51,698 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-24 09:40:51,698 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 09:40:51,698 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-24 09:40:51,699 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-24 09:40:51,699 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-24 09:40:51,699 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-24 09:40:51,699 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-24 09:40:51,700 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-24 09:40:51,700 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-24 09:40:51,700 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-24 09:40:51,700 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_b5ba3c94-08e1-4615-8d46-801a19ff3263/bin/utaipan-9zjyvhn0QE/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ba3c94-08e1-4615-8d46-801a19ff3263/bin/utaipan-9zjyvhn0QE Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4f0dc25e497896e48962fc4f59a3ea4856b5eb0408b9845e68b04a0b0a132067 [2021-10-24 09:40:51,985 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-24 09:40:52,010 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-24 09:40:52,013 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-24 09:40:52,015 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-24 09:40:52,017 INFO L275 PluginConnector]: CDTParser initialized [2021-10-24 09:40:52,018 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ba3c94-08e1-4615-8d46-801a19ff3263/bin/utaipan-9zjyvhn0QE/../../sv-benchmarks/c/nla-digbench-scaling/mannadiv_valuebound20.c [2021-10-24 09:40:52,123 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ba3c94-08e1-4615-8d46-801a19ff3263/bin/utaipan-9zjyvhn0QE/data/476e22ebd/4f39179362c54fadb4d315e39245e301/FLAG823af27f1 [2021-10-24 09:40:52,644 INFO L306 CDTParser]: Found 1 translation units. [2021-10-24 09:40:52,644 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ba3c94-08e1-4615-8d46-801a19ff3263/sv-benchmarks/c/nla-digbench-scaling/mannadiv_valuebound20.c [2021-10-24 09:40:52,656 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ba3c94-08e1-4615-8d46-801a19ff3263/bin/utaipan-9zjyvhn0QE/data/476e22ebd/4f39179362c54fadb4d315e39245e301/FLAG823af27f1 [2021-10-24 09:40:53,009 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ba3c94-08e1-4615-8d46-801a19ff3263/bin/utaipan-9zjyvhn0QE/data/476e22ebd/4f39179362c54fadb4d315e39245e301 [2021-10-24 09:40:53,011 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-24 09:40:53,013 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-24 09:40:53,014 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-24 09:40:53,015 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-24 09:40:53,018 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-24 09:40:53,018 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:40:53" (1/1) ... [2021-10-24 09:40:53,020 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55e220e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:40:53, skipping insertion in model container [2021-10-24 09:40:53,020 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:40:53" (1/1) ... [2021-10-24 09:40:53,028 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-24 09:40:53,042 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-24 09:40:53,229 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ba3c94-08e1-4615-8d46-801a19ff3263/sv-benchmarks/c/nla-digbench-scaling/mannadiv_valuebound20.c[573,586] [2021-10-24 09:40:53,241 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 09:40:53,251 INFO L203 MainTranslator]: Completed pre-run [2021-10-24 09:40:53,261 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ba3c94-08e1-4615-8d46-801a19ff3263/sv-benchmarks/c/nla-digbench-scaling/mannadiv_valuebound20.c[573,586] [2021-10-24 09:40:53,265 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 09:40:53,278 INFO L208 MainTranslator]: Completed translation [2021-10-24 09:40:53,279 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:40:53 WrapperNode [2021-10-24 09:40:53,279 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-24 09:40:53,280 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-24 09:40:53,280 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-24 09:40:53,281 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-24 09:40:53,288 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:40:53" (1/1) ... [2021-10-24 09:40:53,295 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:40:53" (1/1) ... [2021-10-24 09:40:53,314 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-24 09:40:53,314 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-24 09:40:53,315 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-24 09:40:53,315 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-24 09:40:53,323 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:40:53" (1/1) ... [2021-10-24 09:40:53,323 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:40:53" (1/1) ... [2021-10-24 09:40:53,325 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:40:53" (1/1) ... [2021-10-24 09:40:53,325 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:40:53" (1/1) ... [2021-10-24 09:40:53,329 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:40:53" (1/1) ... [2021-10-24 09:40:53,333 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:40:53" (1/1) ... [2021-10-24 09:40:53,334 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:40:53" (1/1) ... [2021-10-24 09:40:53,336 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-24 09:40:53,336 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-24 09:40:53,337 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-24 09:40:53,337 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-24 09:40:53,338 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:40:53" (1/1) ... [2021-10-24 09:40:53,351 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 09:40:53,361 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ba3c94-08e1-4615-8d46-801a19ff3263/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 09:40:53,375 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ba3c94-08e1-4615-8d46-801a19ff3263/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-24 09:40:53,402 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ba3c94-08e1-4615-8d46-801a19ff3263/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-24 09:40:53,430 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-24 09:40:53,430 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-24 09:40:53,432 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-24 09:40:53,432 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-24 09:40:53,847 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-24 09:40:53,848 INFO L299 CfgBuilder]: Removed 13 assume(true) statements. [2021-10-24 09:40:53,850 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:40:53 BoogieIcfgContainer [2021-10-24 09:40:53,856 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-24 09:40:53,858 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-24 09:40:53,858 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-24 09:40:53,863 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-24 09:40:53,864 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 09:40:53" (1/3) ... [2021-10-24 09:40:53,864 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f2d5dc1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:40:53, skipping insertion in model container [2021-10-24 09:40:53,865 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:40:53" (2/3) ... [2021-10-24 09:40:53,870 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f2d5dc1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:40:53, skipping insertion in model container [2021-10-24 09:40:53,870 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:40:53" (3/3) ... [2021-10-24 09:40:53,871 INFO L111 eAbstractionObserver]: Analyzing ICFG mannadiv_valuebound20.c [2021-10-24 09:40:53,877 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-24 09:40:53,878 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-10-24 09:40:53,951 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-24 09:40:53,958 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-24 09:40:53,958 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-10-24 09:40:53,974 INFO L276 IsEmpty]: Start isEmpty. Operand has 12 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 11 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:40:53,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-24 09:40:53,980 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 09:40:53,981 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-24 09:40:53,981 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 09:40:53,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 09:40:53,988 INFO L82 PathProgramCache]: Analyzing trace with hash 3152978, now seen corresponding path program 1 times [2021-10-24 09:40:54,000 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 09:40:54,000 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244491794] [2021-10-24 09:40:54,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:40:54,002 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 09:40:54,157 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-24 09:40:54,159 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [516889851] [2021-10-24 09:40:54,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:40:54,160 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 09:40:54,160 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ba3c94-08e1-4615-8d46-801a19ff3263/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 09:40:54,167 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ba3c94-08e1-4615-8d46-801a19ff3263/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-24 09:40:54,189 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ba3c94-08e1-4615-8d46-801a19ff3263/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-24 09:40:54,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 09:40:54,287 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-24 09:40:54,292 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 09:40:54,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:40:54,659 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 09:40:54,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:40:54,750 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 09:40:54,752 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244491794] [2021-10-24 09:40:54,753 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-24 09:40:54,754 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [516889851] [2021-10-24 09:40:54,757 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [516889851] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 09:40:54,757 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 09:40:54,757 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-24 09:40:54,760 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925520112] [2021-10-24 09:40:54,767 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-24 09:40:54,768 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 09:40:54,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-24 09:40:54,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-24 09:40:54,785 INFO L87 Difference]: Start difference. First operand has 12 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 11 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 5 states, 5 states have (on average 1.2) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:40:54,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 09:40:54,878 INFO L93 Difference]: Finished difference Result 30 states and 39 transitions. [2021-10-24 09:40:54,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-24 09:40:54,880 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.2) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2021-10-24 09:40:54,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 09:40:54,890 INFO L225 Difference]: With dead ends: 30 [2021-10-24 09:40:54,891 INFO L226 Difference]: Without dead ends: 15 [2021-10-24 09:40:54,894 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 83.5ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-10-24 09:40:54,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-10-24 09:40:54,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 8. [2021-10-24 09:40:54,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:40:54,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2021-10-24 09:40:54,933 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 4 [2021-10-24 09:40:54,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 09:40:54,934 INFO L470 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2021-10-24 09:40:54,934 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.2) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:40:54,935 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2021-10-24 09:40:54,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-24 09:40:54,935 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 09:40:54,936 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-24 09:40:54,984 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ba3c94-08e1-4615-8d46-801a19ff3263/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-24 09:40:55,149 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ba3c94-08e1-4615-8d46-801a19ff3263/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 09:40:55,150 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 09:40:55,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 09:40:55,151 INFO L82 PathProgramCache]: Analyzing trace with hash -554007233, now seen corresponding path program 1 times [2021-10-24 09:40:55,151 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 09:40:55,151 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126054412] [2021-10-24 09:40:55,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:40:55,152 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 09:40:55,172 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-24 09:40:55,173 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1768129482] [2021-10-24 09:40:55,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:40:55,173 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 09:40:55,173 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ba3c94-08e1-4615-8d46-801a19ff3263/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 09:40:55,181 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ba3c94-08e1-4615-8d46-801a19ff3263/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-24 09:40:55,186 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ba3c94-08e1-4615-8d46-801a19ff3263/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-24 09:40:55,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 09:40:55,235 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-24 09:40:55,236 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 09:40:55,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:40:55,359 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 09:40:55,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:40:55,498 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 09:40:55,499 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126054412] [2021-10-24 09:40:55,499 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-24 09:40:55,500 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1768129482] [2021-10-24 09:40:55,500 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1768129482] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 09:40:55,502 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 09:40:55,502 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 8 [2021-10-24 09:40:55,503 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267640551] [2021-10-24 09:40:55,504 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-24 09:40:55,505 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 09:40:55,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-24 09:40:55,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-10-24 09:40:55,506 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand has 8 states, 8 states have (on average 1.25) internal successors, (10), 8 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:40:55,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 09:40:55,577 INFO L93 Difference]: Finished difference Result 9 states and 9 transitions. [2021-10-24 09:40:55,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-24 09:40:55,578 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.25) internal successors, (10), 8 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-10-24 09:40:55,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 09:40:55,578 INFO L225 Difference]: With dead ends: 9 [2021-10-24 09:40:55,579 INFO L226 Difference]: Without dead ends: 0 [2021-10-24 09:40:55,580 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 107.7ms TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2021-10-24 09:40:55,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-24 09:40:55,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-24 09:40:55,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:40:55,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-24 09:40:55,581 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 7 [2021-10-24 09:40:55,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 09:40:55,581 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-24 09:40:55,582 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.25) internal successors, (10), 8 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:40:55,582 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-24 09:40:55,582 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-24 09:40:55,585 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-24 09:40:55,585 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-24 09:40:55,623 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ba3c94-08e1-4615-8d46-801a19ff3263/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-24 09:40:55,805 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ba3c94-08e1-4615-8d46-801a19ff3263/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 09:40:55,807 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-24 09:40:55,810 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:40:55,842 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:40:55,849 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:40:55,929 INFO L857 garLoopResultBuilder]: For program point L35-2(lines 35 48) no Hoare annotation was computed. [2021-10-24 09:40:55,930 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 18) no Hoare annotation was computed. [2021-10-24 09:40:55,930 INFO L853 garLoopResultBuilder]: At program point L40-2(lines 35 48) the Hoare annotation is: (or (and (= ULTIMATE.start_main_~x1~0 ULTIMATE.start_main_~y3~0) (= ULTIMATE.start_main_~y1~0 0) (<= ULTIMATE.start_main_~x2~0 2147483647) (= ULTIMATE.start_main_~y2~0 0) (<= 0 (+ ULTIMATE.start_main_~x2~0 2147483648)) (not (= ULTIMATE.start_main_~x2~0 0))) (and (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= (+ ULTIMATE.start_main_~y3~0 ULTIMATE.start_main_~y2~0 (* ULTIMATE.start_main_~y1~0 ULTIMATE.start_main_~x2~0)) ULTIMATE.start_main_~x1~0))) [2021-10-24 09:40:55,931 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-24 09:40:55,931 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 18) no Hoare annotation was computed. [2021-10-24 09:40:55,931 INFO L857 garLoopResultBuilder]: For program point L16(lines 16 19) no Hoare annotation was computed. [2021-10-24 09:40:55,931 INFO L853 garLoopResultBuilder]: At program point L16-2(line 38) the Hoare annotation is: (and (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= (+ ULTIMATE.start_main_~y3~0 ULTIMATE.start_main_~y2~0 (* ULTIMATE.start_main_~y1~0 ULTIMATE.start_main_~x2~0)) ULTIMATE.start_main_~x1~0)) [2021-10-24 09:40:55,932 INFO L857 garLoopResultBuilder]: For program point L16-3(lines 16 19) no Hoare annotation was computed. [2021-10-24 09:40:55,932 INFO L853 garLoopResultBuilder]: At program point L16-5(lines 15 21) the Hoare annotation is: (= (+ ULTIMATE.start_main_~y3~0 ULTIMATE.start_main_~y2~0 (* ULTIMATE.start_main_~y1~0 ULTIMATE.start_main_~x2~0)) ULTIMATE.start_main_~x1~0) [2021-10-24 09:40:55,932 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-24 09:40:55,933 INFO L857 garLoopResultBuilder]: For program point L17(lines 17 18) no Hoare annotation was computed. [2021-10-24 09:40:55,938 INFO L857 garLoopResultBuilder]: For program point L17-1(lines 17 18) no Hoare annotation was computed. [2021-10-24 09:40:55,943 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-24 09:40:55,970 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 09:40:55 BoogieIcfgContainer [2021-10-24 09:40:55,975 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-24 09:40:55,976 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-24 09:40:55,976 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-24 09:40:55,977 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-24 09:40:55,977 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:40:53" (3/4) ... [2021-10-24 09:40:55,981 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-24 09:40:55,992 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2021-10-24 09:40:55,993 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2021-10-24 09:40:55,993 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-10-24 09:40:55,994 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-24 09:40:56,032 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ba3c94-08e1-4615-8d46-801a19ff3263/bin/utaipan-9zjyvhn0QE/witness.graphml [2021-10-24 09:40:56,032 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-24 09:40:56,034 INFO L168 Benchmark]: Toolchain (without parser) took 3020.19 ms. Allocated memory was 98.6 MB in the beginning and 130.0 MB in the end (delta: 31.5 MB). Free memory was 65.3 MB in the beginning and 91.3 MB in the end (delta: -26.1 MB). Peak memory consumption was 4.5 MB. Max. memory is 16.1 GB. [2021-10-24 09:40:56,035 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 98.6 MB. Free memory was 52.6 MB in the beginning and 52.6 MB in the end (delta: 44.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 09:40:56,035 INFO L168 Benchmark]: CACSL2BoogieTranslator took 265.15 ms. Allocated memory is still 98.6 MB. Free memory was 65.1 MB in the beginning and 73.9 MB in the end (delta: -8.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-24 09:40:56,036 INFO L168 Benchmark]: Boogie Procedure Inliner took 33.59 ms. Allocated memory is still 98.6 MB. Free memory was 73.9 MB in the beginning and 72.3 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-24 09:40:56,037 INFO L168 Benchmark]: Boogie Preprocessor took 21.32 ms. Allocated memory is still 98.6 MB. Free memory was 72.3 MB in the beginning and 71.4 MB in the end (delta: 896.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 09:40:56,037 INFO L168 Benchmark]: RCFGBuilder took 519.84 ms. Allocated memory is still 98.6 MB. Free memory was 71.4 MB in the beginning and 57.6 MB in the end (delta: 13.8 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-24 09:40:56,038 INFO L168 Benchmark]: TraceAbstraction took 2117.75 ms. Allocated memory was 98.6 MB in the beginning and 130.0 MB in the end (delta: 31.5 MB). Free memory was 57.0 MB in the beginning and 94.4 MB in the end (delta: -37.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 09:40:56,039 INFO L168 Benchmark]: Witness Printer took 56.26 ms. Allocated memory is still 130.0 MB. Free memory was 94.4 MB in the beginning and 91.3 MB in the end (delta: 3.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-24 09:40:56,042 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 98.6 MB. Free memory was 52.6 MB in the beginning and 52.6 MB in the end (delta: 44.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 265.15 ms. Allocated memory is still 98.6 MB. Free memory was 65.1 MB in the beginning and 73.9 MB in the end (delta: -8.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 33.59 ms. Allocated memory is still 98.6 MB. Free memory was 73.9 MB in the beginning and 72.3 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 21.32 ms. Allocated memory is still 98.6 MB. Free memory was 72.3 MB in the beginning and 71.4 MB in the end (delta: 896.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 519.84 ms. Allocated memory is still 98.6 MB. Free memory was 71.4 MB in the beginning and 57.6 MB in the end (delta: 13.8 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2117.75 ms. Allocated memory was 98.6 MB in the beginning and 130.0 MB in the end (delta: 31.5 MB). Free memory was 57.0 MB in the beginning and 94.4 MB in the end (delta: -37.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 56.26 ms. Allocated memory is still 130.0 MB. Free memory was 94.4 MB in the beginning and 91.3 MB in the end (delta: 3.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - 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 1 procedures, 12 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 1993.7ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 11.5ms, AutomataDifference: 200.2ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 123.1ms, InitialAbstractionConstructionTime: 10.4ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 6 SDtfs, 23 SDslu, 8 SDs, 0 SdLazy, 26 SolverSat, 16 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 53.7ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 22 GetRequests, 7 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 191.2ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=12occurred in iteration=0, InterpolantAutomatonStates: 11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 20.9ms AutomataMinimizationTime, 2 MinimizatonAttempts, 7 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 8 NumberOfFragments, 55 HoareAnnotationTreeSize, 3 FomulaSimplifications, 83 FormulaSimplificationTreeSizeReduction, 51.1ms HoareSimplificationTime, 3 FomulaSimplificationsInter, 35 FormulaSimplificationTreeSizeReductionInter, 66.1ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 11.6ms SsaConstructionTime, 71.4ms SatisfiabilityAnalysisTime, 728.3ms InterpolantComputationTime, 11 NumberOfCodeBlocks, 11 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 18 ConstructedInterpolants, 0 QuantifiedInterpolants, 123 SizeOfPredicates, 21 NumberOfNonLiveVariables, 115 ConjunctsInSsa, 26 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - InvariantResult [Line: 35]: Loop Invariant Derived loop invariant: (((((x1 == y3 && y1 == 0) && x2 <= 2147483647) && y2 == 0) && 0 <= x2 + 2147483648) && !(x2 == 0)) || (1 <= cond && y3 + y2 + y1 * x2 == x1) - InvariantResult [Line: 38]: Loop Invariant Derived loop invariant: 1 == cond && y3 + y2 + y1 * x2 == x1 - InvariantResult [Line: 15]: Loop Invariant Derived loop invariant: y3 + y2 + y1 * x2 == x1 RESULT: Ultimate proved your program to be correct! [2021-10-24 09:40:56,095 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5ba3c94-08e1-4615-8d46-801a19ff3263/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...