./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/freire2_valuebound10.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_81eb67ad-76de-4b87-b37e-cd8e3f1ffa7c/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_81eb67ad-76de-4b87-b37e-cd8e3f1ffa7c/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_81eb67ad-76de-4b87-b37e-cd8e3f1ffa7c/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_81eb67ad-76de-4b87-b37e-cd8e3f1ffa7c/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/freire2_valuebound10.c -s /tmp/vcloud-vcloud-master/worker/run_dir_81eb67ad-76de-4b87-b37e-cd8e3f1ffa7c/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_81eb67ad-76de-4b87-b37e-cd8e3f1ffa7c/bin/utaipan --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 c7ea68167b15ad5c2c66c983bd3a726f44f721c6 ......................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_81eb67ad-76de-4b87-b37e-cd8e3f1ffa7c/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_81eb67ad-76de-4b87-b37e-cd8e3f1ffa7c/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_81eb67ad-76de-4b87-b37e-cd8e3f1ffa7c/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_81eb67ad-76de-4b87-b37e-cd8e3f1ffa7c/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/freire2_valuebound10.c -s /tmp/vcloud-vcloud-master/worker/run_dir_81eb67ad-76de-4b87-b37e-cd8e3f1ffa7c/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_81eb67ad-76de-4b87-b37e-cd8e3f1ffa7c/bin/utaipan --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 c7ea68167b15ad5c2c66c983bd3a726f44f721c6 ............................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2020-12-09 17:16:58,453 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 17:16:58,464 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 17:16:58,485 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 17:16:58,486 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 17:16:58,486 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 17:16:58,488 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 17:16:58,489 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 17:16:58,491 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 17:16:58,492 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 17:16:58,492 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 17:16:58,493 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 17:16:58,494 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 17:16:58,495 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 17:16:58,496 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 17:16:58,497 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 17:16:58,497 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 17:16:58,498 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 17:16:58,499 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 17:16:58,501 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 17:16:58,503 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 17:16:58,504 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 17:16:58,505 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 17:16:58,505 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 17:16:58,508 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 17:16:58,508 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 17:16:58,509 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 17:16:58,509 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 17:16:58,510 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 17:16:58,511 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 17:16:58,511 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 17:16:58,512 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 17:16:58,512 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 17:16:58,513 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 17:16:58,514 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 17:16:58,514 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 17:16:58,514 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 17:16:58,514 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 17:16:58,515 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 17:16:58,515 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 17:16:58,516 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 17:16:58,516 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_81eb67ad-76de-4b87-b37e-cd8e3f1ffa7c/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-12-09 17:16:58,537 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 17:16:58,538 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 17:16:58,538 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 17:16:58,539 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 17:16:58,539 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 17:16:58,539 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 17:16:58,539 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 17:16:58,539 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 17:16:58,539 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 17:16:58,540 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 17:16:58,540 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 17:16:58,540 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 17:16:58,540 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 17:16:58,540 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 17:16:58,541 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 17:16:58,541 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 17:16:58,541 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 17:16:58,542 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 17:16:58,542 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 17:16:58,542 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 17:16:58,542 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 17:16:58,542 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 17:16:58,542 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 17:16:58,542 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 17:16:58,543 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 17:16:58,543 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 17:16:58,543 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 17:16:58,543 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 17:16:58,543 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 17:16:58,544 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 17:16:58,544 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 17:16:58,544 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 17:16:58,544 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 17:16:58,544 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 17:16:58,544 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 17:16:58,544 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 17:16:58,545 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 17:16:58,545 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 17:16:58,545 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 17:16:58,545 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-vcloud-master/worker/run_dir_81eb67ad-76de-4b87-b37e-cd8e3f1ffa7c/bin/utaipan/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_81eb67ad-76de-4b87-b37e-cd8e3f1ffa7c/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c7ea68167b15ad5c2c66c983bd3a726f44f721c6 [2020-12-09 17:16:58,733 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 17:16:58,753 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 17:16:58,754 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 17:16:58,755 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 17:16:58,756 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 17:16:58,757 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_81eb67ad-76de-4b87-b37e-cd8e3f1ffa7c/bin/utaipan/../../sv-benchmarks/c/nla-digbench-scaling/freire2_valuebound10.c [2020-12-09 17:16:58,796 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_81eb67ad-76de-4b87-b37e-cd8e3f1ffa7c/bin/utaipan/data/b043d13e8/14a3bd4245824fb9b9d4c28f64c88d89/FLAG660ddeb27 [2020-12-09 17:16:59,140 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 17:16:59,140 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_81eb67ad-76de-4b87-b37e-cd8e3f1ffa7c/sv-benchmarks/c/nla-digbench-scaling/freire2_valuebound10.c [2020-12-09 17:16:59,145 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_81eb67ad-76de-4b87-b37e-cd8e3f1ffa7c/bin/utaipan/data/b043d13e8/14a3bd4245824fb9b9d4c28f64c88d89/FLAG660ddeb27 [2020-12-09 17:16:59,574 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_81eb67ad-76de-4b87-b37e-cd8e3f1ffa7c/bin/utaipan/data/b043d13e8/14a3bd4245824fb9b9d4c28f64c88d89 [2020-12-09 17:16:59,577 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 17:16:59,579 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 17:16:59,581 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 17:16:59,582 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 17:16:59,585 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 17:16:59,585 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 05:16:59" (1/1) ... [2020-12-09 17:16:59,587 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@13f91d14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:16:59, skipping insertion in model container [2020-12-09 17:16:59,588 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 05:16:59" (1/1) ... [2020-12-09 17:16:59,600 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 17:16:59,613 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 17:16:59,712 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_81eb67ad-76de-4b87-b37e-cd8e3f1ffa7c/sv-benchmarks/c/nla-digbench-scaling/freire2_valuebound10.c[709,722] [2020-12-09 17:16:59,735 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 17:16:59,743 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 17:16:59,751 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_81eb67ad-76de-4b87-b37e-cd8e3f1ffa7c/sv-benchmarks/c/nla-digbench-scaling/freire2_valuebound10.c[709,722] [2020-12-09 17:16:59,759 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 17:16:59,769 INFO L208 MainTranslator]: Completed translation [2020-12-09 17:16:59,769 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:16:59 WrapperNode [2020-12-09 17:16:59,769 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 17:16:59,770 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 17:16:59,770 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 17:16:59,770 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 17:16:59,776 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:16:59" (1/1) ... [2020-12-09 17:16:59,783 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:16:59" (1/1) ... [2020-12-09 17:16:59,802 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 17:16:59,803 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 17:16:59,803 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 17:16:59,803 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 17:16:59,811 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:16:59" (1/1) ... [2020-12-09 17:16:59,812 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:16:59" (1/1) ... [2020-12-09 17:16:59,813 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:16:59" (1/1) ... [2020-12-09 17:16:59,814 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:16:59" (1/1) ... [2020-12-09 17:16:59,818 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:16:59" (1/1) ... [2020-12-09 17:16:59,822 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:16:59" (1/1) ... [2020-12-09 17:16:59,824 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:16:59" (1/1) ... [2020-12-09 17:16:59,826 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 17:16:59,826 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 17:16:59,826 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 17:16:59,826 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 17:16:59,827 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:16:59" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_81eb67ad-76de-4b87-b37e-cd8e3f1ffa7c/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 17:16:59,899 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-09 17:16:59,899 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 17:16:59,900 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 17:16:59,900 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 17:17:00,106 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 17:17:00,106 INFO L299 CfgBuilder]: Removed 19 assume(true) statements. [2020-12-09 17:17:00,108 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 05:17:00 BoogieIcfgContainer [2020-12-09 17:17:00,108 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 17:17:00,109 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 17:17:00,109 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 17:17:00,112 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 17:17:00,112 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 05:16:59" (1/3) ... [2020-12-09 17:17:00,112 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32d8514c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 05:17:00, skipping insertion in model container [2020-12-09 17:17:00,113 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:16:59" (2/3) ... [2020-12-09 17:17:00,113 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32d8514c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 05:17:00, skipping insertion in model container [2020-12-09 17:17:00,113 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 05:17:00" (3/3) ... [2020-12-09 17:17:00,114 INFO L111 eAbstractionObserver]: Analyzing ICFG freire2_valuebound10.c [2020-12-09 17:17:00,124 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 17:17:00,127 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2020-12-09 17:17:00,135 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-12-09 17:17:00,152 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 17:17:00,152 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 17:17:00,152 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 17:17:00,152 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 17:17:00,152 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 17:17:00,152 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 17:17:00,152 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 17:17:00,152 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 17:17:00,162 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2020-12-09 17:17:00,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-12-09 17:17:00,166 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 17:17:00,166 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-12-09 17:17:00,167 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 17:17:00,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 17:17:00,170 INFO L82 PathProgramCache]: Analyzing trace with hash 3980175, now seen corresponding path program 1 times [2020-12-09 17:17:00,178 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 17:17:00,179 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136575523] [2020-12-09 17:17:00,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 17:17:00,247 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-09 17:17:00,247 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [968333416] [2020-12-09 17:17:00,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_81eb67ad-76de-4b87-b37e-cd8e3f1ffa7c/bin/utaipan/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 17:17:00,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-09 17:17:00,284 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-09 17:17:00,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-09 17:17:00,293 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-09 17:17:00,314 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2020-12-09 17:17:00,314 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-09 17:17:00,515 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2020-12-09 17:17:00,529 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 05:17:00 BoogieIcfgContainer [2020-12-09 17:17:00,529 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 17:17:00,529 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 17:17:00,530 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 17:17:00,530 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 17:17:00,530 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 05:17:00" (3/4) ... [2020-12-09 17:17:00,532 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-09 17:17:00,533 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 17:17:00,534 INFO L168 Benchmark]: Toolchain (without parser) took 954.12 ms. Allocated memory is still 90.2 MB. Free memory was 49.4 MB in the beginning and 59.1 MB in the end (delta: -9.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 17:17:00,534 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 90.2 MB. Free memory is still 65.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 17:17:00,535 INFO L168 Benchmark]: CACSL2BoogieTranslator took 187.93 ms. Allocated memory is still 90.2 MB. Free memory was 49.2 MB in the beginning and 61.0 MB in the end (delta: -11.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 16.1 GB. [2020-12-09 17:17:00,536 INFO L168 Benchmark]: Boogie Procedure Inliner took 32.54 ms. Allocated memory is still 90.2 MB. Free memory was 61.0 MB in the beginning and 59.4 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 17:17:00,536 INFO L168 Benchmark]: Boogie Preprocessor took 22.59 ms. Allocated memory is still 90.2 MB. Free memory was 59.4 MB in the beginning and 58.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 17:17:00,537 INFO L168 Benchmark]: RCFGBuilder took 281.45 ms. Allocated memory is still 90.2 MB. Free memory was 58.1 MB in the beginning and 53.5 MB in the end (delta: 4.7 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-12-09 17:17:00,537 INFO L168 Benchmark]: TraceAbstraction took 420.25 ms. Allocated memory is still 90.2 MB. Free memory was 53.2 MB in the beginning and 59.5 MB in the end (delta: -6.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 17:17:00,538 INFO L168 Benchmark]: Witness Printer took 3.17 ms. Allocated memory is still 90.2 MB. Free memory was 59.5 MB in the beginning and 59.1 MB in the end (delta: 409.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 17:17:00,541 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 90.2 MB. Free memory is still 65.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 187.93 ms. Allocated memory is still 90.2 MB. Free memory was 49.2 MB in the beginning and 61.0 MB in the end (delta: -11.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 32.54 ms. Allocated memory is still 90.2 MB. Free memory was 61.0 MB in the beginning and 59.4 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 22.59 ms. Allocated memory is still 90.2 MB. Free memory was 59.4 MB in the beginning and 58.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 281.45 ms. Allocated memory is still 90.2 MB. Free memory was 58.1 MB in the beginning and 53.5 MB in the end (delta: 4.7 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * TraceAbstraction took 420.25 ms. Allocated memory is still 90.2 MB. Free memory was 53.2 MB in the beginning and 59.5 MB in the end (delta: -6.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 3.17 ms. Allocated memory is still 90.2 MB. Free memory was 59.5 MB in the beginning and 59.1 MB in the end (delta: 409.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 19]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of to_int at line 34, overapproximation of someBinaryDOUBLEComparisonOperation at line 28. Possible FailurePath: [L25] int r; [L26] double a, x, s; [L27] a = __VERIFIER_nondet_double() [L14] COND FALSE !(!cond) [L29] x = a [L30] s = 3.25 [L31] r = 1 [L33] COND TRUE 1 [L17] COND TRUE !(cond) [L19] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 28 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.3s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=28occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.0-7b2dab5 [2020-12-09 17:17:02,054 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 17:17:02,056 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 17:17:02,085 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 17:17:02,085 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 17:17:02,086 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 17:17:02,088 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 17:17:02,089 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 17:17:02,091 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 17:17:02,092 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 17:17:02,092 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 17:17:02,093 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 17:17:02,094 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 17:17:02,095 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 17:17:02,095 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 17:17:02,096 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 17:17:02,097 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 17:17:02,098 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 17:17:02,099 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 17:17:02,101 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 17:17:02,102 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 17:17:02,103 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 17:17:02,104 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 17:17:02,105 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 17:17:02,108 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 17:17:02,108 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 17:17:02,108 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 17:17:02,109 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 17:17:02,110 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 17:17:02,110 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 17:17:02,111 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 17:17:02,111 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 17:17:02,112 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 17:17:02,113 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 17:17:02,113 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 17:17:02,114 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 17:17:02,114 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 17:17:02,114 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 17:17:02,114 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 17:17:02,115 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 17:17:02,115 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 17:17:02,116 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_81eb67ad-76de-4b87-b37e-cd8e3f1ffa7c/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2020-12-09 17:17:02,132 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 17:17:02,133 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 17:17:02,133 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 17:17:02,133 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 17:17:02,133 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 17:17:02,134 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 17:17:02,134 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 17:17:02,134 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 17:17:02,134 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 17:17:02,134 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 17:17:02,134 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 17:17:02,135 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 17:17:02,135 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 17:17:02,135 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 17:17:02,135 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 17:17:02,135 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 17:17:02,135 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 17:17:02,135 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-12-09 17:17:02,135 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-12-09 17:17:02,135 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 17:17:02,135 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 17:17:02,136 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 17:17:02,136 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 17:17:02,136 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 17:17:02,136 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-09 17:17:02,136 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 17:17:02,136 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 17:17:02,136 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 17:17:02,136 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 17:17:02,137 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 17:17:02,137 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2020-12-09 17:17:02,137 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2020-12-09 17:17:02,137 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 17:17:02,137 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 17:17:02,137 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 17:17:02,137 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-vcloud-master/worker/run_dir_81eb67ad-76de-4b87-b37e-cd8e3f1ffa7c/bin/utaipan/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_81eb67ad-76de-4b87-b37e-cd8e3f1ffa7c/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c7ea68167b15ad5c2c66c983bd3a726f44f721c6 [2020-12-09 17:17:02,357 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 17:17:02,377 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 17:17:02,379 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 17:17:02,380 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 17:17:02,381 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 17:17:02,382 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_81eb67ad-76de-4b87-b37e-cd8e3f1ffa7c/bin/utaipan/../../sv-benchmarks/c/nla-digbench-scaling/freire2_valuebound10.c [2020-12-09 17:17:02,426 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_81eb67ad-76de-4b87-b37e-cd8e3f1ffa7c/bin/utaipan/data/119535569/7244bab456d54c8284b922799c78f559/FLAGbafef095d [2020-12-09 17:17:02,816 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 17:17:02,816 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_81eb67ad-76de-4b87-b37e-cd8e3f1ffa7c/sv-benchmarks/c/nla-digbench-scaling/freire2_valuebound10.c [2020-12-09 17:17:02,821 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_81eb67ad-76de-4b87-b37e-cd8e3f1ffa7c/bin/utaipan/data/119535569/7244bab456d54c8284b922799c78f559/FLAGbafef095d [2020-12-09 17:17:02,832 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_81eb67ad-76de-4b87-b37e-cd8e3f1ffa7c/bin/utaipan/data/119535569/7244bab456d54c8284b922799c78f559 [2020-12-09 17:17:02,834 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 17:17:02,835 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 17:17:02,836 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 17:17:02,836 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 17:17:02,838 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 17:17:02,839 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 05:17:02" (1/1) ... [2020-12-09 17:17:02,840 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@395dfc80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:17:02, skipping insertion in model container [2020-12-09 17:17:02,841 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 05:17:02" (1/1) ... [2020-12-09 17:17:02,846 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 17:17:02,858 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 17:17:02,957 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_81eb67ad-76de-4b87-b37e-cd8e3f1ffa7c/sv-benchmarks/c/nla-digbench-scaling/freire2_valuebound10.c[709,722] [2020-12-09 17:17:02,974 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 17:17:02,983 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 17:17:02,992 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_81eb67ad-76de-4b87-b37e-cd8e3f1ffa7c/sv-benchmarks/c/nla-digbench-scaling/freire2_valuebound10.c[709,722] [2020-12-09 17:17:03,001 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 17:17:03,012 INFO L208 MainTranslator]: Completed translation [2020-12-09 17:17:03,012 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:17:03 WrapperNode [2020-12-09 17:17:03,012 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 17:17:03,013 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 17:17:03,013 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 17:17:03,013 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 17:17:03,018 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:17:03" (1/1) ... [2020-12-09 17:17:03,025 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:17:03" (1/1) ... [2020-12-09 17:17:03,051 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 17:17:03,051 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 17:17:03,051 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 17:17:03,052 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 17:17:03,058 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:17:03" (1/1) ... [2020-12-09 17:17:03,058 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:17:03" (1/1) ... [2020-12-09 17:17:03,061 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:17:03" (1/1) ... [2020-12-09 17:17:03,061 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:17:03" (1/1) ... [2020-12-09 17:17:03,067 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:17:03" (1/1) ... [2020-12-09 17:17:03,070 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:17:03" (1/1) ... [2020-12-09 17:17:03,072 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:17:03" (1/1) ... [2020-12-09 17:17:03,075 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 17:17:03,075 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 17:17:03,075 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 17:17:03,076 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 17:17:03,076 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:17:03" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_81eb67ad-76de-4b87-b37e-cd8e3f1ffa7c/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 17:17:03,132 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-12-09 17:17:03,132 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 17:17:03,133 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 17:17:03,133 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 17:17:16,364 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 17:17:16,364 INFO L299 CfgBuilder]: Removed 19 assume(true) statements. [2020-12-09 17:17:16,366 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 05:17:16 BoogieIcfgContainer [2020-12-09 17:17:16,366 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 17:17:16,368 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 17:17:16,368 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 17:17:16,371 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 17:17:16,371 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 05:17:02" (1/3) ... [2020-12-09 17:17:16,372 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4825811b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 05:17:16, skipping insertion in model container [2020-12-09 17:17:16,372 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:17:03" (2/3) ... [2020-12-09 17:17:16,373 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4825811b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 05:17:16, skipping insertion in model container [2020-12-09 17:17:16,373 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 05:17:16" (3/3) ... [2020-12-09 17:17:16,374 INFO L111 eAbstractionObserver]: Analyzing ICFG freire2_valuebound10.c [2020-12-09 17:17:16,386 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 17:17:16,389 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2020-12-09 17:17:16,397 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-12-09 17:17:16,413 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 17:17:16,413 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 17:17:16,413 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 17:17:16,413 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 17:17:16,413 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 17:17:16,413 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 17:17:16,413 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 17:17:16,413 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 17:17:16,422 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2020-12-09 17:17:16,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-09 17:17:16,425 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 17:17:16,426 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-09 17:17:16,426 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 17:17:16,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 17:17:16,430 INFO L82 PathProgramCache]: Analyzing trace with hash 1804972333, now seen corresponding path program 1 times [2020-12-09 17:17:16,437 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 17:17:16,438 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1354221500] [2020-12-09 17:17:16,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_81eb67ad-76de-4b87-b37e-cd8e3f1ffa7c/bin/utaipan/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-12-09 17:17:16,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 17:17:16,574 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 1 conjunts are in the unsatisfiable core [2020-12-09 17:17:16,577 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 17:17:16,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 17:17:16,598 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 17:17:16,599 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1354221500] [2020-12-09 17:17:16,599 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 17:17:16,599 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 17:17:16,600 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714571638] [2020-12-09 17:17:16,604 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-09 17:17:16,604 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 17:17:16,614 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-09 17:17:16,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-09 17:17:16,616 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 2 states. [2020-12-09 17:17:16,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 17:17:16,628 INFO L93 Difference]: Finished difference Result 63 states and 80 transitions. [2020-12-09 17:17:16,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-09 17:17:16,632 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 7 [2020-12-09 17:17:16,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 17:17:16,638 INFO L225 Difference]: With dead ends: 63 [2020-12-09 17:17:16,638 INFO L226 Difference]: Without dead ends: 29 [2020-12-09 17:17:16,640 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-09 17:17:16,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-12-09 17:17:16,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-12-09 17:17:16,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-12-09 17:17:16,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 29 transitions. [2020-12-09 17:17:16,662 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 29 transitions. Word has length 7 [2020-12-09 17:17:16,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 17:17:16,662 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 29 transitions. [2020-12-09 17:17:16,663 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-09 17:17:16,663 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 29 transitions. [2020-12-09 17:17:16,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-09 17:17:16,663 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 17:17:16,663 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-09 17:17:16,864 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-12-09 17:17:16,864 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 17:17:16,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 17:17:16,865 INFO L82 PathProgramCache]: Analyzing trace with hash 1806819375, now seen corresponding path program 1 times [2020-12-09 17:17:16,866 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 17:17:16,866 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2051105257] [2020-12-09 17:17:16,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_81eb67ad-76de-4b87-b37e-cd8e3f1ffa7c/bin/utaipan/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-12-09 17:17:16,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 17:17:16,980 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 6 conjunts are in the unsatisfiable core [2020-12-09 17:17:16,981 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 17:17:17,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 17:17:17,153 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 17:17:17,153 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2051105257] [2020-12-09 17:17:17,153 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 17:17:17,154 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 17:17:17,154 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721343268] [2020-12-09 17:17:17,155 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 17:17:17,155 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 17:17:17,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 17:17:17,157 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-09 17:17:17,157 INFO L87 Difference]: Start difference. First operand 29 states and 29 transitions. Second operand 5 states. [2020-12-09 17:17:46,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 17:17:46,692 INFO L93 Difference]: Finished difference Result 34 states and 34 transitions. [2020-12-09 17:17:46,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 17:17:46,693 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 7 [2020-12-09 17:17:46,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 17:17:46,694 INFO L225 Difference]: With dead ends: 34 [2020-12-09 17:17:46,695 INFO L226 Difference]: Without dead ends: 32 [2020-12-09 17:17:46,695 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-09 17:17:46,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-12-09 17:17:46,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 31. [2020-12-09 17:17:46,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-12-09 17:17:46,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 31 transitions. [2020-12-09 17:17:46,703 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 31 transitions. Word has length 7 [2020-12-09 17:17:46,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 17:17:46,703 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 31 transitions. [2020-12-09 17:17:46,703 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 17:17:46,703 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 31 transitions. [2020-12-09 17:17:46,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-09 17:17:46,704 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 17:17:46,704 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 17:17:46,905 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-12-09 17:17:46,906 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 17:17:46,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 17:17:46,908 INFO L82 PathProgramCache]: Analyzing trace with hash 1186787538, now seen corresponding path program 1 times [2020-12-09 17:17:46,911 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 17:17:46,911 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [529086051] [2020-12-09 17:17:46,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_81eb67ad-76de-4b87-b37e-cd8e3f1ffa7c/bin/utaipan/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2020-12-09 17:17:47,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 17:17:47,465 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-09 17:17:47,466 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 17:17:47,670 WARN L197 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-12-09 17:17:47,888 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-09 17:17:55,452 WARN L838 $PredicateComparison]: unable to prove that (and (= (bvadd c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv4294967295 32)) (_ bv0 32)) (exists ((ULTIMATE.start_main_~a~0 (_ FloatingPoint 11 53))) (and (= ((_ fp.to_sbv 32) roundTowardZero (let ((.cse0 (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (_ bv4 32)) ULTIMATE.start_main_~a~0))) (fp.sub roundNearestTiesToEven .cse0 .cse0))) (_ bv0 32)) (fp.leq ULTIMATE.start_main_~a~0 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv10 32))) (fp.geq ULTIMATE.start_main_~a~0 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))))) is different from false [2020-12-09 17:17:55,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 17:17:55,462 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 17:17:55,463 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [529086051] [2020-12-09 17:17:55,463 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 17:17:55,463 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-09 17:17:55,463 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780202080] [2020-12-09 17:17:55,464 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-09 17:17:55,464 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 17:17:55,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-09 17:17:55,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=18, Unknown=1, NotChecked=8, Total=42 [2020-12-09 17:17:55,465 INFO L87 Difference]: Start difference. First operand 31 states and 31 transitions. Second operand 7 states. [2020-12-09 17:17:55,694 WARN L197 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 21 DAG size of output: 14 [2020-12-09 17:17:55,946 WARN L197 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 18 [2020-12-09 17:18:10,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 17:18:10,901 INFO L93 Difference]: Finished difference Result 35 states and 35 transitions. [2020-12-09 17:18:11,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-09 17:18:11,003 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 9 [2020-12-09 17:18:11,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 17:18:11,004 INFO L225 Difference]: With dead ends: 35 [2020-12-09 17:18:11,004 INFO L226 Difference]: Without dead ends: 33 [2020-12-09 17:18:11,004 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=27, Invalid=32, Unknown=1, NotChecked=12, Total=72 [2020-12-09 17:18:11,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-12-09 17:18:11,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2020-12-09 17:18:11,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-12-09 17:18:11,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 33 transitions. [2020-12-09 17:18:11,009 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 33 transitions. Word has length 9 [2020-12-09 17:18:11,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 17:18:11,010 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 33 transitions. [2020-12-09 17:18:11,010 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-09 17:18:11,010 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 33 transitions. [2020-12-09 17:18:11,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-09 17:18:11,010 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 17:18:11,011 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 17:18:11,211 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-12-09 17:18:11,213 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 17:18:11,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 17:18:11,215 INFO L82 PathProgramCache]: Analyzing trace with hash -1958320619, now seen corresponding path program 1 times [2020-12-09 17:18:11,216 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 17:18:11,217 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1798234292] [2020-12-09 17:18:11,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_81eb67ad-76de-4b87-b37e-cd8e3f1ffa7c/bin/utaipan/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2020-12-09 17:18:13,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-09 17:18:13,093 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-09 17:18:14,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-09 17:18:14,692 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-09 17:18:14,776 INFO L173 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2020-12-09 17:18:14,776 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-09 17:18:14,977 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-12-09 17:18:15,029 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 05:18:15 BoogieIcfgContainer [2020-12-09 17:18:15,029 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 17:18:15,030 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 17:18:15,030 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 17:18:15,030 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 17:18:15,031 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 05:17:16" (3/4) ... [2020-12-09 17:18:15,033 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-12-09 17:18:15,064 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_81eb67ad-76de-4b87-b37e-cd8e3f1ffa7c/bin/utaipan/witness.graphml [2020-12-09 17:18:15,064 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 17:18:15,065 INFO L168 Benchmark]: Toolchain (without parser) took 72230.17 ms. Allocated memory was 48.2 MB in the beginning and 58.7 MB in the end (delta: 10.5 MB). Free memory was 26.1 MB in the beginning and 27.5 MB in the end (delta: -1.3 MB). Peak memory consumption was 7.7 MB. Max. memory is 16.1 GB. [2020-12-09 17:18:15,066 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 48.2 MB. Free memory was 31.3 MB in the beginning and 31.2 MB in the end (delta: 84.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 17:18:15,066 INFO L168 Benchmark]: CACSL2BoogieTranslator took 176.68 ms. Allocated memory is still 48.2 MB. Free memory was 26.0 MB in the beginning and 26.4 MB in the end (delta: -403.2 kB). Peak memory consumption was 5.0 MB. Max. memory is 16.1 GB. [2020-12-09 17:18:15,066 INFO L168 Benchmark]: Boogie Procedure Inliner took 37.81 ms. Allocated memory was 48.2 MB in the beginning and 58.7 MB in the end (delta: 10.5 MB). Free memory was 26.4 MB in the beginning and 42.7 MB in the end (delta: -16.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 17:18:15,067 INFO L168 Benchmark]: Boogie Preprocessor took 23.39 ms. Allocated memory is still 58.7 MB. Free memory was 42.7 MB in the beginning and 41.3 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 17:18:15,067 INFO L168 Benchmark]: RCFGBuilder took 13290.93 ms. Allocated memory is still 58.7 MB. Free memory was 41.3 MB in the beginning and 40.6 MB in the end (delta: 653.6 kB). Peak memory consumption was 18.3 MB. Max. memory is 16.1 GB. [2020-12-09 17:18:15,068 INFO L168 Benchmark]: TraceAbstraction took 58660.98 ms. Allocated memory is still 58.7 MB. Free memory was 40.3 MB in the beginning and 29.7 MB in the end (delta: 10.6 MB). Peak memory consumption was 11.2 MB. Max. memory is 16.1 GB. [2020-12-09 17:18:15,068 INFO L168 Benchmark]: Witness Printer took 34.76 ms. Allocated memory is still 58.7 MB. Free memory was 29.3 MB in the beginning and 27.5 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 17:18:15,070 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 48.2 MB. Free memory was 31.3 MB in the beginning and 31.2 MB in the end (delta: 84.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 176.68 ms. Allocated memory is still 48.2 MB. Free memory was 26.0 MB in the beginning and 26.4 MB in the end (delta: -403.2 kB). Peak memory consumption was 5.0 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 37.81 ms. Allocated memory was 48.2 MB in the beginning and 58.7 MB in the end (delta: 10.5 MB). Free memory was 26.4 MB in the beginning and 42.7 MB in the end (delta: -16.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 23.39 ms. Allocated memory is still 58.7 MB. Free memory was 42.7 MB in the beginning and 41.3 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 13290.93 ms. Allocated memory is still 58.7 MB. Free memory was 41.3 MB in the beginning and 40.6 MB in the end (delta: 653.6 kB). Peak memory consumption was 18.3 MB. Max. memory is 16.1 GB. * TraceAbstraction took 58660.98 ms. Allocated memory is still 58.7 MB. Free memory was 40.3 MB in the beginning and 29.7 MB in the end (delta: 10.6 MB). Peak memory consumption was 11.2 MB. Max. memory is 16.1 GB. * Witness Printer took 34.76 ms. Allocated memory is still 58.7 MB. Free memory was 29.3 MB in the beginning and 27.5 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 19]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L25] int r; [L26] double a, x, s; [L27] a = __VERIFIER_nondet_double() [L14] COND FALSE !(!cond) [L29] x = a [L30] s = 3.25 [L31] r = 1 [L33] COND TRUE 1 [L17] COND FALSE !(!(cond)) [L17] COND FALSE !(!(cond)) [L17] COND TRUE !(cond) [L19] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 33 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 58.5s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 45.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 81 SDtfs, 13 SDslu, 88 SDs, 0 SdLazy, 41 SolverSat, 0 SolverUnsat, 17 SolverUnknown, 0 SolverNotchecked, 43.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 3.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=33occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 2.5s SatisfiabilityAnalysisTime, 8.2s InterpolantComputationTime, 34 NumberOfCodeBlocks, 34 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 20 ConstructedInterpolants, 1 QuantifiedInterpolants, 1398 SizeOfPredicates, 11 NumberOfNonLiveVariables, 102 ConjunctsInSsa, 16 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...