./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/geo1-u_valuebound20.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c164fa2a-199c-48f6-9947-ddf998d80715/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c164fa2a-199c-48f6-9947-ddf998d80715/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c164fa2a-199c-48f6-9947-ddf998d80715/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c164fa2a-199c-48f6-9947-ddf998d80715/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/geo1-u_valuebound20.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c164fa2a-199c-48f6-9947-ddf998d80715/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c164fa2a-199c-48f6-9947-ddf998d80715/bin/utaipan-vmNK8stdcF --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 56ae0381e0fc321a4bef875cc97d6a437c7ca54ffeb3bb010be2e47fa76c5a5f --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 23:10:41,590 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 23:10:41,594 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 23:10:41,649 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 23:10:41,650 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 23:10:41,651 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 23:10:41,654 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 23:10:41,657 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 23:10:41,660 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 23:10:41,662 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 23:10:41,664 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 23:10:41,666 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 23:10:41,667 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 23:10:41,668 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 23:10:41,670 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 23:10:41,673 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 23:10:41,674 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 23:10:41,676 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 23:10:41,678 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 23:10:41,681 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 23:10:41,684 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 23:10:41,686 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 23:10:41,688 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 23:10:41,695 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 23:10:41,700 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 23:10:41,700 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 23:10:41,701 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 23:10:41,702 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 23:10:41,703 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 23:10:41,705 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 23:10:41,705 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 23:10:41,706 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 23:10:41,708 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 23:10:41,709 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 23:10:41,710 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 23:10:41,711 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 23:10:41,712 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 23:10:41,713 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 23:10:41,713 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 23:10:41,715 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 23:10:41,716 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 23:10:41,717 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c164fa2a-199c-48f6-9947-ddf998d80715/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-12 23:10:41,755 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 23:10:41,755 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 23:10:41,756 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 23:10:41,757 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 23:10:41,757 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 23:10:41,758 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 23:10:41,758 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 23:10:41,758 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-12 23:10:41,759 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 23:10:41,759 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 23:10:41,759 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-12 23:10:41,760 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-12 23:10:41,760 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 23:10:41,760 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-12 23:10:41,761 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-12 23:10:41,761 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-12 23:10:41,762 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 23:10:41,762 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-12 23:10:41,763 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-12 23:10:41,763 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-12 23:10:41,763 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 23:10:41,764 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-12 23:10:41,764 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 23:10:41,764 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-12 23:10:41,764 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 23:10:41,765 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-12 23:10:41,765 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-12 23:10:41,765 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 23:10:41,766 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-12 23:10:41,766 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 23:10:41,766 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 23:10:41,767 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:10:41,767 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 23:10:41,767 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 23:10:41,768 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-12 23:10:41,768 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-12 23:10:41,768 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-12 23:10:41,768 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-12 23:10:41,769 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 23:10:41,769 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 23:10:41,769 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_c164fa2a-199c-48f6-9947-ddf998d80715/bin/utaipan-vmNK8stdcF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c164fa2a-199c-48f6-9947-ddf998d80715/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 56ae0381e0fc321a4bef875cc97d6a437c7ca54ffeb3bb010be2e47fa76c5a5f [2021-11-12 23:10:42,056 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 23:10:42,083 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 23:10:42,086 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 23:10:42,088 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 23:10:42,089 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 23:10:42,091 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c164fa2a-199c-48f6-9947-ddf998d80715/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/nla-digbench-scaling/geo1-u_valuebound20.c [2021-11-12 23:10:42,184 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c164fa2a-199c-48f6-9947-ddf998d80715/bin/utaipan-vmNK8stdcF/data/332b47306/e3b66c05b4a34294934f949d76144870/FLAG9e085df5c [2021-11-12 23:10:42,754 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 23:10:42,755 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c164fa2a-199c-48f6-9947-ddf998d80715/sv-benchmarks/c/nla-digbench-scaling/geo1-u_valuebound20.c [2021-11-12 23:10:42,763 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c164fa2a-199c-48f6-9947-ddf998d80715/bin/utaipan-vmNK8stdcF/data/332b47306/e3b66c05b4a34294934f949d76144870/FLAG9e085df5c [2021-11-12 23:10:43,136 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c164fa2a-199c-48f6-9947-ddf998d80715/bin/utaipan-vmNK8stdcF/data/332b47306/e3b66c05b4a34294934f949d76144870 [2021-11-12 23:10:43,141 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 23:10:43,143 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 23:10:43,149 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 23:10:43,150 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 23:10:43,153 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 23:10:43,154 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:10:43" (1/1) ... [2021-11-12 23:10:43,156 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44055a05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:10:43, skipping insertion in model container [2021-11-12 23:10:43,156 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:10:43" (1/1) ... [2021-11-12 23:10:43,165 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 23:10:43,182 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 23:10:43,403 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_c164fa2a-199c-48f6-9947-ddf998d80715/sv-benchmarks/c/nla-digbench-scaling/geo1-u_valuebound20.c[555,568] [2021-11-12 23:10:43,421 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:10:43,432 INFO L203 MainTranslator]: Completed pre-run [2021-11-12 23:10:43,447 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_c164fa2a-199c-48f6-9947-ddf998d80715/sv-benchmarks/c/nla-digbench-scaling/geo1-u_valuebound20.c[555,568] [2021-11-12 23:10:43,454 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:10:43,470 INFO L208 MainTranslator]: Completed translation [2021-11-12 23:10:43,471 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:10:43 WrapperNode [2021-11-12 23:10:43,471 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 23:10:43,472 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-12 23:10:43,472 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-12 23:10:43,473 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-12 23:10:43,482 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:10:43" (1/1) ... [2021-11-12 23:10:43,494 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:10:43" (1/1) ... [2021-11-12 23:10:43,521 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-12 23:10:43,523 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-12 23:10:43,524 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-12 23:10:43,524 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-12 23:10:43,535 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:10:43" (1/1) ... [2021-11-12 23:10:43,535 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:10:43" (1/1) ... [2021-11-12 23:10:43,536 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:10:43" (1/1) ... [2021-11-12 23:10:43,537 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:10:43" (1/1) ... [2021-11-12 23:10:43,541 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:10:43" (1/1) ... [2021-11-12 23:10:43,545 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:10:43" (1/1) ... [2021-11-12 23:10:43,547 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:10:43" (1/1) ... [2021-11-12 23:10:43,549 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-12 23:10:43,550 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-12 23:10:43,550 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-12 23:10:43,550 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-12 23:10:43,568 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:10:43" (1/1) ... [2021-11-12 23:10:43,580 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:10:43,599 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c164fa2a-199c-48f6-9947-ddf998d80715/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 23:10:43,619 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c164fa2a-199c-48f6-9947-ddf998d80715/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-12 23:10:43,622 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c164fa2a-199c-48f6-9947-ddf998d80715/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-12 23:10:43,662 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-12 23:10:43,662 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-12 23:10:43,662 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-12 23:10:43,662 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-12 23:10:43,662 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-12 23:10:43,662 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-12 23:10:43,662 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-12 23:10:43,663 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-12 23:10:43,995 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-12 23:10:43,996 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-12 23:10:43,999 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:10:43 BoogieIcfgContainer [2021-11-12 23:10:44,011 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-12 23:10:44,013 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-12 23:10:44,014 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-12 23:10:44,018 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-12 23:10:44,019 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 11:10:43" (1/3) ... [2021-11-12 23:10:44,020 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@de7ad5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 11:10:44, skipping insertion in model container [2021-11-12 23:10:44,020 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:10:43" (2/3) ... [2021-11-12 23:10:44,020 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@de7ad5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 11:10:44, skipping insertion in model container [2021-11-12 23:10:44,021 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:10:43" (3/3) ... [2021-11-12 23:10:44,022 INFO L111 eAbstractionObserver]: Analyzing ICFG geo1-u_valuebound20.c [2021-11-12 23:10:44,035 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-12 23:10:44,045 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-12 23:10:44,101 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-12 23:10:44,110 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 [2021-11-12 23:10:44,110 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-12 23:10:44,129 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 13 states have internal predecessors, (16), 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) [2021-11-12 23:10:44,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-12 23:10:44,138 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:10:44,139 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:10:44,140 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:10:44,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:10:44,148 INFO L85 PathProgramCache]: Analyzing trace with hash 169979374, now seen corresponding path program 1 times [2021-11-12 23:10:44,163 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:10:44,163 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144443064] [2021-11-12 23:10:44,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:10:44,165 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:10:44,305 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-12 23:10:44,306 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [411598082] [2021-11-12 23:10:44,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:10:44,307 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 23:10:44,307 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c164fa2a-199c-48f6-9947-ddf998d80715/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 23:10:44,312 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c164fa2a-199c-48f6-9947-ddf998d80715/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 23:10:44,331 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c164fa2a-199c-48f6-9947-ddf998d80715/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-12 23:10:44,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:10:44,447 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-12 23:10:44,453 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:10:44,673 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-12 23:10:44,673 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:10:44,783 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-12 23:10:44,783 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:10:44,784 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144443064] [2021-11-12 23:10:44,784 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-12 23:10:44,785 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [411598082] [2021-11-12 23:10:44,785 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [411598082] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:10:44,786 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:10:44,786 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 6 [2021-11-12 23:10:44,789 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407679317] [2021-11-12 23:10:44,790 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:10:44,796 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-12 23:10:44,796 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:10:44,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-12 23:10:44,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-12 23:10:44,834 INFO L87 Difference]: Start difference. First operand has 20 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 13 states have internal predecessors, (16), 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 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 5 states have internal predecessors, (10), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-12 23:10:45,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:10:45,609 INFO L93 Difference]: Finished difference Result 41 states and 54 transitions. [2021-11-12 23:10:45,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 23:10:45,613 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 5 states have internal predecessors, (10), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 14 [2021-11-12 23:10:45,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:10:45,622 INFO L225 Difference]: With dead ends: 41 [2021-11-12 23:10:45,623 INFO L226 Difference]: Without dead ends: 24 [2021-11-12 23:10:45,627 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-11-12 23:10:45,632 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 8 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 701.12ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.56ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 714.56ms IncrementalHoareTripleChecker+Time [2021-11-12 23:10:45,634 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 53 Invalid, 41 Unknown, 0 Unchecked, 6.56ms Time], IncrementalHoareTripleChecker [5 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 714.56ms Time] [2021-11-12 23:10:45,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2021-11-12 23:10:45,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 20. [2021-11-12 23:10:45,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 13 states have (on average 1.0769230769230769) internal successors, (14), 13 states have internal predecessors, (14), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-12 23:10:45,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2021-11-12 23:10:45,686 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 14 [2021-11-12 23:10:45,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:10:45,687 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2021-11-12 23:10:45,687 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 5 states have internal predecessors, (10), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-12 23:10:45,687 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2021-11-12 23:10:45,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-12 23:10:45,690 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:10:45,690 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:10:45,717 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c164fa2a-199c-48f6-9947-ddf998d80715/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-12 23:10:45,893 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c164fa2a-199c-48f6-9947-ddf998d80715/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-11-12 23:10:45,894 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:10:45,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:10:45,895 INFO L85 PathProgramCache]: Analyzing trace with hash -1451058048, now seen corresponding path program 1 times [2021-11-12 23:10:45,896 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:10:45,896 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828725995] [2021-11-12 23:10:45,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:10:45,897 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:10:45,922 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-12 23:10:45,923 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1558093834] [2021-11-12 23:10:45,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:10:45,924 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 23:10:45,924 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c164fa2a-199c-48f6-9947-ddf998d80715/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 23:10:45,925 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c164fa2a-199c-48f6-9947-ddf998d80715/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 23:10:45,928 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c164fa2a-199c-48f6-9947-ddf998d80715/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-12 23:10:46,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-12 23:10:46,022 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-12 23:10:46,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-12 23:10:46,071 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-12 23:10:46,072 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-12 23:10:46,074 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-12 23:10:46,126 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c164fa2a-199c-48f6-9947-ddf998d80715/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-12 23:10:46,285 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c164fa2a-199c-48f6-9947-ddf998d80715/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 23:10:46,290 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2021-11-12 23:10:46,295 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-12 23:10:46,328 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.NullPointerException at de.uni_freiburg.informatik.ultimate.boogie.procedureinliner.backtranslation.InlinerBacktranslator.computeCurrectProc(InlinerBacktranslator.java:230) at de.uni_freiburg.informatik.ultimate.boogie.procedureinliner.backtranslation.InlinerBacktranslator.translateProgramExecution(InlinerBacktranslator.java:203) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:216) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:225) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:225) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:206) at de.uni_freiburg.informatik.ultimate.core.lib.results.CounterExampleResult.getProgramExecutionAsString(CounterExampleResult.java:155) at de.uni_freiburg.informatik.ultimate.core.lib.results.CounterExampleResult.getLongDescription(CounterExampleResult.java:134) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ResultService.reportResult(ResultService.java:86) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResultReporter.reportResult(CegarLoopResultReporter.java:141) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.reportLocationResults(TraceAbstractionStarter.java:586) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:181) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-12 23:10:46,341 INFO L158 Benchmark]: Toolchain (without parser) took 3197.13ms. Allocated memory was 98.6MB in the beginning and 119.5MB in the end (delta: 21.0MB). Free memory was 65.1MB in the beginning and 72.7MB in the end (delta: -7.6MB). Peak memory consumption was 14.5MB. Max. memory is 16.1GB. [2021-11-12 23:10:46,342 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 98.6MB. Free memory was 50.3MB in the beginning and 50.2MB in the end (delta: 77.1kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 23:10:46,346 INFO L158 Benchmark]: CACSL2BoogieTranslator took 321.92ms. Allocated memory is still 98.6MB. Free memory was 64.9MB in the beginning and 74.4MB in the end (delta: -9.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-12 23:10:46,348 INFO L158 Benchmark]: Boogie Procedure Inliner took 49.62ms. Allocated memory is still 98.6MB. Free memory was 74.4MB in the beginning and 73.0MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-12 23:10:46,350 INFO L158 Benchmark]: Boogie Preprocessor took 26.24ms. Allocated memory is still 98.6MB. Free memory was 73.0MB in the beginning and 72.1MB in the end (delta: 999.7kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 23:10:46,357 INFO L158 Benchmark]: RCFGBuilder took 461.77ms. Allocated memory is still 98.6MB. Free memory was 72.0MB in the beginning and 61.9MB in the end (delta: 10.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-12 23:10:46,359 INFO L158 Benchmark]: TraceAbstraction took 2325.54ms. Allocated memory was 98.6MB in the beginning and 119.5MB in the end (delta: 21.0MB). Free memory was 61.5MB in the beginning and 72.7MB in the end (delta: -11.2MB). Peak memory consumption was 13.4MB. Max. memory is 16.1GB. [2021-11-12 23:10:46,366 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 98.6MB. Free memory was 50.3MB in the beginning and 50.2MB in the end (delta: 77.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 321.92ms. Allocated memory is still 98.6MB. Free memory was 64.9MB in the beginning and 74.4MB in the end (delta: -9.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 49.62ms. Allocated memory is still 98.6MB. Free memory was 74.4MB in the beginning and 73.0MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 26.24ms. Allocated memory is still 98.6MB. Free memory was 73.0MB in the beginning and 72.1MB in the end (delta: 999.7kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 461.77ms. Allocated memory is still 98.6MB. Free memory was 72.0MB in the beginning and 61.9MB in the end (delta: 10.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 2325.54ms. Allocated memory was 98.6MB in the beginning and 119.5MB in the end (delta: 21.0MB). Free memory was 61.5MB in the beginning and 72.7MB in the end (delta: -11.2MB). Peak memory consumption was 13.4MB. 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 - ExceptionOrErrorResult: NullPointerException: null de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: NullPointerException: null: de.uni_freiburg.informatik.ultimate.boogie.procedureinliner.backtranslation.InlinerBacktranslator.computeCurrectProc(InlinerBacktranslator.java:230) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-11-12 23:10:46,400 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c164fa2a-199c-48f6-9947-ddf998d80715/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c164fa2a-199c-48f6-9947-ddf998d80715/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c164fa2a-199c-48f6-9947-ddf998d80715/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c164fa2a-199c-48f6-9947-ddf998d80715/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c164fa2a-199c-48f6-9947-ddf998d80715/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/geo1-u_valuebound20.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c164fa2a-199c-48f6-9947-ddf998d80715/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c164fa2a-199c-48f6-9947-ddf998d80715/bin/utaipan-vmNK8stdcF --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 56ae0381e0fc321a4bef875cc97d6a437c7ca54ffeb3bb010be2e47fa76c5a5f --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 23:10:49,565 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 23:10:49,569 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 23:10:49,643 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 23:10:49,643 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 23:10:49,647 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 23:10:49,649 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 23:10:49,652 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 23:10:49,656 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 23:10:49,660 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 23:10:49,662 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 23:10:49,666 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 23:10:49,667 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 23:10:49,676 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 23:10:49,678 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 23:10:49,681 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 23:10:49,688 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 23:10:49,690 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 23:10:49,697 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 23:10:49,701 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 23:10:49,709 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 23:10:49,711 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 23:10:49,713 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 23:10:49,716 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 23:10:49,725 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 23:10:49,726 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 23:10:49,726 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 23:10:49,732 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 23:10:49,733 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 23:10:49,734 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 23:10:49,735 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 23:10:49,736 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 23:10:49,739 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 23:10:49,740 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 23:10:49,742 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 23:10:49,743 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 23:10:49,753 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 23:10:49,753 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 23:10:49,754 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 23:10:49,756 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 23:10:49,757 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 23:10:49,758 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c164fa2a-199c-48f6-9947-ddf998d80715/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-12 23:10:49,816 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 23:10:49,817 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 23:10:49,819 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 23:10:49,819 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 23:10:49,820 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 23:10:49,820 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 23:10:49,820 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 23:10:49,821 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 23:10:49,821 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 23:10:49,821 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 23:10:49,824 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 23:10:49,825 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-12 23:10:49,825 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-12 23:10:49,826 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 23:10:49,826 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-12 23:10:49,826 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 23:10:49,827 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-12 23:10:49,827 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 23:10:49,827 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-12 23:10:49,828 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-12 23:10:49,828 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-12 23:10:49,828 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-12 23:10:49,829 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 23:10:49,829 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-12 23:10:49,829 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 23:10:49,830 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-12 23:10:49,830 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 23:10:49,830 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:10:49,831 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 23:10:49,831 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 23:10:49,831 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-12 23:10:49,831 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-12 23:10:49,832 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-12 23:10:49,832 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-12 23:10:49,833 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 23:10:49,833 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 23:10:49,833 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c164fa2a-199c-48f6-9947-ddf998d80715/bin/utaipan-vmNK8stdcF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c164fa2a-199c-48f6-9947-ddf998d80715/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 56ae0381e0fc321a4bef875cc97d6a437c7ca54ffeb3bb010be2e47fa76c5a5f [2021-11-12 23:10:50,348 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 23:10:50,386 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 23:10:50,390 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 23:10:50,392 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 23:10:50,393 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 23:10:50,395 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c164fa2a-199c-48f6-9947-ddf998d80715/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/nla-digbench-scaling/geo1-u_valuebound20.c [2021-11-12 23:10:50,487 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c164fa2a-199c-48f6-9947-ddf998d80715/bin/utaipan-vmNK8stdcF/data/2077292e5/c46c6d09fb5444ff98173d606c40bc15/FLAGb046a7349 [2021-11-12 23:10:51,184 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 23:10:51,186 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c164fa2a-199c-48f6-9947-ddf998d80715/sv-benchmarks/c/nla-digbench-scaling/geo1-u_valuebound20.c [2021-11-12 23:10:51,195 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c164fa2a-199c-48f6-9947-ddf998d80715/bin/utaipan-vmNK8stdcF/data/2077292e5/c46c6d09fb5444ff98173d606c40bc15/FLAGb046a7349 [2021-11-12 23:10:51,535 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c164fa2a-199c-48f6-9947-ddf998d80715/bin/utaipan-vmNK8stdcF/data/2077292e5/c46c6d09fb5444ff98173d606c40bc15 [2021-11-12 23:10:51,540 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 23:10:51,543 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 23:10:51,546 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 23:10:51,546 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 23:10:51,550 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 23:10:51,551 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:10:51" (1/1) ... [2021-11-12 23:10:51,554 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3cba3845 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:10:51, skipping insertion in model container [2021-11-12 23:10:51,556 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:10:51" (1/1) ... [2021-11-12 23:10:51,570 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 23:10:51,589 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 23:10:51,766 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_c164fa2a-199c-48f6-9947-ddf998d80715/sv-benchmarks/c/nla-digbench-scaling/geo1-u_valuebound20.c[555,568] [2021-11-12 23:10:51,786 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:10:51,803 INFO L203 MainTranslator]: Completed pre-run [2021-11-12 23:10:51,832 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_c164fa2a-199c-48f6-9947-ddf998d80715/sv-benchmarks/c/nla-digbench-scaling/geo1-u_valuebound20.c[555,568] [2021-11-12 23:10:51,842 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:10:51,868 INFO L208 MainTranslator]: Completed translation [2021-11-12 23:10:51,869 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:10:51 WrapperNode [2021-11-12 23:10:51,869 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 23:10:51,880 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-12 23:10:51,881 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-12 23:10:51,881 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-12 23:10:51,890 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:10:51" (1/1) ... [2021-11-12 23:10:51,925 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:10:51" (1/1) ... [2021-11-12 23:10:51,951 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-12 23:10:51,952 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-12 23:10:51,953 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-12 23:10:51,953 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-12 23:10:51,964 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:10:51" (1/1) ... [2021-11-12 23:10:51,965 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:10:51" (1/1) ... [2021-11-12 23:10:51,968 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:10:51" (1/1) ... [2021-11-12 23:10:51,969 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:10:51" (1/1) ... [2021-11-12 23:10:51,976 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:10:51" (1/1) ... [2021-11-12 23:10:51,982 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:10:51" (1/1) ... [2021-11-12 23:10:51,984 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:10:51" (1/1) ... [2021-11-12 23:10:51,987 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-12 23:10:51,988 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-12 23:10:51,988 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-12 23:10:51,988 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-12 23:10:51,990 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:10:51" (1/1) ... [2021-11-12 23:10:51,999 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:10:52,013 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c164fa2a-199c-48f6-9947-ddf998d80715/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 23:10:52,034 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c164fa2a-199c-48f6-9947-ddf998d80715/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-12 23:10:52,052 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c164fa2a-199c-48f6-9947-ddf998d80715/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-12 23:10:52,092 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-12 23:10:52,093 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-12 23:10:52,093 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-12 23:10:52,094 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-12 23:10:52,094 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-12 23:10:52,094 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-12 23:10:52,094 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-12 23:10:52,095 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-12 23:10:52,659 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-12 23:10:52,660 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-12 23:10:52,662 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:10:52 BoogieIcfgContainer [2021-11-12 23:10:52,662 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-12 23:10:52,664 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-12 23:10:52,679 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-12 23:10:52,683 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-12 23:10:52,684 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 11:10:51" (1/3) ... [2021-11-12 23:10:52,685 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d5ced40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 11:10:52, skipping insertion in model container [2021-11-12 23:10:52,685 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:10:51" (2/3) ... [2021-11-12 23:10:52,686 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d5ced40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 11:10:52, skipping insertion in model container [2021-11-12 23:10:52,686 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:10:52" (3/3) ... [2021-11-12 23:10:52,687 INFO L111 eAbstractionObserver]: Analyzing ICFG geo1-u_valuebound20.c [2021-11-12 23:10:52,694 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-12 23:10:52,703 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-12 23:10:52,796 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-12 23:10:52,805 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 [2021-11-12 23:10:52,806 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-12 23:10:52,842 INFO L276 IsEmpty]: Start isEmpty. Operand has 25 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 18 states have internal predecessors, (23), 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) [2021-11-12 23:10:52,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-12 23:10:52,850 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:10:52,851 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:10:52,853 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:10:52,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:10:52,867 INFO L85 PathProgramCache]: Analyzing trace with hash -1975646755, now seen corresponding path program 1 times [2021-11-12 23:10:52,892 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:10:52,893 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [394515181] [2021-11-12 23:10:52,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:10:52,895 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:10:52,896 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c164fa2a-199c-48f6-9947-ddf998d80715/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:10:52,904 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c164fa2a-199c-48f6-9947-ddf998d80715/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:10:52,939 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c164fa2a-199c-48f6-9947-ddf998d80715/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-12 23:10:53,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:10:53,086 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-12 23:10:53,094 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:10:53,228 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-12 23:10:53,229 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:10:53,346 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-12 23:10:53,347 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:10:53,348 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [394515181] [2021-11-12 23:10:53,349 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [394515181] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:10:53,349 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:10:53,350 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-12 23:10:53,352 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669591262] [2021-11-12 23:10:53,357 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:10:53,363 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-12 23:10:53,364 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:10:53,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-12 23:10:53,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-12 23:10:53,404 INFO L87 Difference]: Start difference. First operand has 25 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 18 states have internal predecessors, (23), 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 6.5) internal successors, (13), 2 states have internal predecessors, (13), 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) [2021-11-12 23:10:53,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:10:53,430 INFO L93 Difference]: Finished difference Result 47 states and 62 transitions. [2021-11-12 23:10:53,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-12 23:10:53,433 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 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 19 [2021-11-12 23:10:53,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:10:53,444 INFO L225 Difference]: With dead ends: 47 [2021-11-12 23:10:53,455 INFO L226 Difference]: Without dead ends: 21 [2021-11-12 23:10:53,460 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-12 23:10:53,466 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.02ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-12 23:10:53,471 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 1.02ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-12 23:10:53,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2021-11-12 23:10:53,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2021-11-12 23:10:53,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 14 states have (on average 1.1428571428571428) internal successors, (16), 15 states have internal predecessors, (16), 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) [2021-11-12 23:10:53,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 23 transitions. [2021-11-12 23:10:53,524 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 23 transitions. Word has length 19 [2021-11-12 23:10:53,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:10:53,525 INFO L470 AbstractCegarLoop]: Abstraction has 21 states and 23 transitions. [2021-11-12 23:10:53,526 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 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) [2021-11-12 23:10:53,526 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2021-11-12 23:10:53,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-12 23:10:53,528 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:10:53,529 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:10:53,545 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c164fa2a-199c-48f6-9947-ddf998d80715/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-12 23:10:53,743 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c164fa2a-199c-48f6-9947-ddf998d80715/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:10:53,744 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:10:53,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:10:53,746 INFO L85 PathProgramCache]: Analyzing trace with hash 1719515233, now seen corresponding path program 1 times [2021-11-12 23:10:53,747 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:10:53,747 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [229872413] [2021-11-12 23:10:53,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:10:53,748 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:10:53,748 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c164fa2a-199c-48f6-9947-ddf998d80715/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:10:53,749 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c164fa2a-199c-48f6-9947-ddf998d80715/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:10:53,762 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c164fa2a-199c-48f6-9947-ddf998d80715/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-12 23:10:53,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:10:53,889 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-12 23:10:53,891 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:10:54,438 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-12 23:10:54,438 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:10:55,463 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-12 23:10:55,464 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:10:55,464 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [229872413] [2021-11-12 23:10:55,465 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [229872413] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 23:10:55,465 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 23:10:55,465 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11 [2021-11-12 23:10:55,465 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098033078] [2021-11-12 23:10:55,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:10:55,467 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 23:10:55,468 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:10:55,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 23:10:55,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-11-12 23:10:55,469 INFO L87 Difference]: Start difference. First operand 21 states and 23 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 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) [2021-11-12 23:10:57,933 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-12 23:10:58,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:10:58,602 INFO L93 Difference]: Finished difference Result 31 states and 34 transitions. [2021-11-12 23:10:58,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 23:10:58,629 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 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 19 [2021-11-12 23:10:58,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:10:58,631 INFO L225 Difference]: With dead ends: 31 [2021-11-12 23:10:58,631 INFO L226 Difference]: Without dead ends: 29 [2021-11-12 23:10:58,632 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-11-12 23:10:58,634 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 7 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2926.72ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.19ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3029.38ms IncrementalHoareTripleChecker+Time [2021-11-12 23:10:58,635 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 71 Invalid, 23 Unknown, 0 Unchecked, 3.19ms Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 1 Unknown, 0 Unchecked, 3029.38ms Time] [2021-11-12 23:10:58,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-11-12 23:10:58,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 27. [2021-11-12 23:10:58,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 20 states have internal predecessors, (20), 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) [2021-11-12 23:10:58,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 29 transitions. [2021-11-12 23:10:58,666 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 29 transitions. Word has length 19 [2021-11-12 23:10:58,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:10:58,669 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 29 transitions. [2021-11-12 23:10:58,669 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 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) [2021-11-12 23:10:58,670 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 29 transitions. [2021-11-12 23:10:58,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-12 23:10:58,674 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:10:58,674 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:10:58,696 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c164fa2a-199c-48f6-9947-ddf998d80715/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-12 23:10:58,888 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c164fa2a-199c-48f6-9947-ddf998d80715/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:10:58,888 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:10:58,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:10:58,890 INFO L85 PathProgramCache]: Analyzing trace with hash 1670281901, now seen corresponding path program 1 times [2021-11-12 23:10:58,891 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:10:58,891 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1275968177] [2021-11-12 23:10:58,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:10:58,894 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:10:58,895 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c164fa2a-199c-48f6-9947-ddf998d80715/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:10:58,896 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c164fa2a-199c-48f6-9947-ddf998d80715/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:10:58,936 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c164fa2a-199c-48f6-9947-ddf998d80715/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-12 23:10:59,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-12 23:10:59,055 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-12 23:10:59,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-12 23:10:59,228 INFO L133 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2021-11-12 23:10:59,228 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-12 23:10:59,230 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-12 23:10:59,264 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c164fa2a-199c-48f6-9947-ddf998d80715/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-12 23:10:59,432 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c164fa2a-199c-48f6-9947-ddf998d80715/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:10:59,437 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2021-11-12 23:10:59,440 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-12 23:10:59,457 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.NullPointerException at de.uni_freiburg.informatik.ultimate.boogie.procedureinliner.backtranslation.InlinerBacktranslator.computeCurrectProc(InlinerBacktranslator.java:230) at de.uni_freiburg.informatik.ultimate.boogie.procedureinliner.backtranslation.InlinerBacktranslator.translateProgramExecution(InlinerBacktranslator.java:203) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:216) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:225) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:225) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:206) at de.uni_freiburg.informatik.ultimate.core.lib.results.CounterExampleResult.getProgramExecutionAsString(CounterExampleResult.java:155) at de.uni_freiburg.informatik.ultimate.core.lib.results.CounterExampleResult.getLongDescription(CounterExampleResult.java:134) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ResultService.reportResult(ResultService.java:86) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResultReporter.reportResult(CegarLoopResultReporter.java:141) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.reportLocationResults(TraceAbstractionStarter.java:586) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:181) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-12 23:10:59,460 INFO L158 Benchmark]: Toolchain (without parser) took 7917.13ms. Allocated memory was 56.6MB in the beginning and 69.2MB in the end (delta: 12.6MB). Free memory was 34.6MB in the beginning and 42.5MB in the end (delta: -7.8MB). Peak memory consumption was 5.1MB. Max. memory is 16.1GB. [2021-11-12 23:10:59,461 INFO L158 Benchmark]: CDTParser took 0.36ms. Allocated memory is still 56.6MB. Free memory was 37.0MB in the beginning and 37.0MB in the end (delta: 27.9kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 23:10:59,462 INFO L158 Benchmark]: CACSL2BoogieTranslator took 323.87ms. Allocated memory was 56.6MB in the beginning and 69.2MB in the end (delta: 12.6MB). Free memory was 34.4MB in the beginning and 53.5MB in the end (delta: -19.1MB). Peak memory consumption was 13.8MB. Max. memory is 16.1GB. [2021-11-12 23:10:59,463 INFO L158 Benchmark]: Boogie Procedure Inliner took 71.39ms. Allocated memory is still 69.2MB. Free memory was 53.5MB in the beginning and 52.0MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-12 23:10:59,464 INFO L158 Benchmark]: Boogie Preprocessor took 34.41ms. Allocated memory is still 69.2MB. Free memory was 52.0MB in the beginning and 50.8MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 23:10:59,465 INFO L158 Benchmark]: RCFGBuilder took 674.69ms. Allocated memory is still 69.2MB. Free memory was 50.8MB in the beginning and 40.9MB in the end (delta: 9.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-12 23:10:59,466 INFO L158 Benchmark]: TraceAbstraction took 6794.70ms. Allocated memory is still 69.2MB. Free memory was 40.3MB in the beginning and 42.5MB in the end (delta: -2.2MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 23:10:59,470 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36ms. Allocated memory is still 56.6MB. Free memory was 37.0MB in the beginning and 37.0MB in the end (delta: 27.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 323.87ms. Allocated memory was 56.6MB in the beginning and 69.2MB in the end (delta: 12.6MB). Free memory was 34.4MB in the beginning and 53.5MB in the end (delta: -19.1MB). Peak memory consumption was 13.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 71.39ms. Allocated memory is still 69.2MB. Free memory was 53.5MB in the beginning and 52.0MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 34.41ms. Allocated memory is still 69.2MB. Free memory was 52.0MB in the beginning and 50.8MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 674.69ms. Allocated memory is still 69.2MB. Free memory was 50.8MB in the beginning and 40.9MB in the end (delta: 9.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 6794.70ms. Allocated memory is still 69.2MB. Free memory was 40.3MB in the beginning and 42.5MB in the end (delta: -2.2MB). There was no memory consumed. 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 - ExceptionOrErrorResult: NullPointerException: null de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: NullPointerException: null: de.uni_freiburg.informatik.ultimate.boogie.procedureinliner.backtranslation.InlinerBacktranslator.computeCurrectProc(InlinerBacktranslator.java:230) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-11-12 23:10:59,531 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c164fa2a-199c-48f6-9947-ddf998d80715/bin/utaipan-vmNK8stdcF/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: ERROR: ExceptionOrErrorResult: NullPointerException: null