./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/freire1_unwindbound2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47ace06d-4e18-4bb3-b95f-f1bf03015de2/bin/utaipan-SDwSMHVbGG/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47ace06d-4e18-4bb3-b95f-f1bf03015de2/bin/utaipan-SDwSMHVbGG/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47ace06d-4e18-4bb3-b95f-f1bf03015de2/bin/utaipan-SDwSMHVbGG/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47ace06d-4e18-4bb3-b95f-f1bf03015de2/bin/utaipan-SDwSMHVbGG/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/freire1_unwindbound2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47ace06d-4e18-4bb3-b95f-f1bf03015de2/bin/utaipan-SDwSMHVbGG/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47ace06d-4e18-4bb3-b95f-f1bf03015de2/bin/utaipan-SDwSMHVbGG --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash de6052d9944b0ce145148179524f90cfdb820a3940df4791211047874b65b687 ............................................................................................................................................................................................................................................................. Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47ace06d-4e18-4bb3-b95f-f1bf03015de2/bin/utaipan-SDwSMHVbGG/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47ace06d-4e18-4bb3-b95f-f1bf03015de2/bin/utaipan-SDwSMHVbGG/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47ace06d-4e18-4bb3-b95f-f1bf03015de2/bin/utaipan-SDwSMHVbGG/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47ace06d-4e18-4bb3-b95f-f1bf03015de2/bin/utaipan-SDwSMHVbGG/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/freire1_unwindbound2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47ace06d-4e18-4bb3-b95f-f1bf03015de2/bin/utaipan-SDwSMHVbGG/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47ace06d-4e18-4bb3-b95f-f1bf03015de2/bin/utaipan-SDwSMHVbGG --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash de6052d9944b0ce145148179524f90cfdb820a3940df4791211047874b65b687 ............................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 0.2.1-dev-b2eff8b [2021-10-29 05:24:01,643 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-29 05:24:01,645 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-29 05:24:01,686 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-29 05:24:01,687 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-29 05:24:01,692 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-29 05:24:01,696 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-29 05:24:01,701 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-29 05:24:01,704 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-29 05:24:01,712 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-29 05:24:01,714 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-29 05:24:01,716 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-29 05:24:01,717 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-29 05:24:01,720 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-29 05:24:01,722 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-29 05:24:01,728 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-29 05:24:01,730 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-29 05:24:01,731 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-29 05:24:01,738 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-29 05:24:01,743 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-29 05:24:01,748 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-29 05:24:01,750 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-29 05:24:01,754 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-29 05:24:01,756 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-29 05:24:01,762 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-29 05:24:01,763 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-29 05:24:01,764 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-29 05:24:01,766 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-29 05:24:01,767 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-29 05:24:01,769 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-29 05:24:01,770 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-29 05:24:01,771 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-29 05:24:01,773 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-29 05:24:01,775 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-29 05:24:01,777 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-29 05:24:01,778 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-29 05:24:01,779 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-29 05:24:01,779 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-29 05:24:01,779 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-29 05:24:01,781 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-29 05:24:01,782 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-29 05:24:01,783 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47ace06d-4e18-4bb3-b95f-f1bf03015de2/bin/utaipan-SDwSMHVbGG/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-29 05:24:01,826 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-29 05:24:01,827 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-29 05:24:01,828 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-29 05:24:01,829 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-29 05:24:01,829 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-29 05:24:01,829 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-29 05:24:01,830 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-29 05:24:01,830 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-29 05:24:01,830 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-29 05:24:01,830 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-29 05:24:01,838 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-29 05:24:01,838 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-29 05:24:01,839 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-29 05:24:01,839 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-29 05:24:01,839 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-29 05:24:01,840 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-29 05:24:01,840 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-29 05:24:01,841 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-29 05:24:01,841 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-29 05:24:01,841 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-29 05:24:01,841 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-29 05:24:01,842 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-29 05:24:01,842 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-29 05:24:01,842 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-29 05:24:01,842 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-29 05:24:01,843 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-29 05:24:01,843 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-29 05:24:01,843 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-29 05:24:01,843 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-29 05:24:01,846 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-29 05:24:01,846 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 05:24:01,846 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-29 05:24:01,847 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-29 05:24:01,847 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-29 05:24:01,847 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-29 05:24:01,847 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-29 05:24:01,848 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-29 05:24:01,848 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-29 05:24:01,848 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-29 05:24:01,848 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_47ace06d-4e18-4bb3-b95f-f1bf03015de2/bin/utaipan-SDwSMHVbGG/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47ace06d-4e18-4bb3-b95f-f1bf03015de2/bin/utaipan-SDwSMHVbGG Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> de6052d9944b0ce145148179524f90cfdb820a3940df4791211047874b65b687 [2021-10-29 05:24:02,184 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-29 05:24:02,207 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-29 05:24:02,210 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-29 05:24:02,211 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-29 05:24:02,212 INFO L275 PluginConnector]: CDTParser initialized [2021-10-29 05:24:02,213 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47ace06d-4e18-4bb3-b95f-f1bf03015de2/bin/utaipan-SDwSMHVbGG/../../sv-benchmarks/c/nla-digbench-scaling/freire1_unwindbound2.c [2021-10-29 05:24:02,285 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47ace06d-4e18-4bb3-b95f-f1bf03015de2/bin/utaipan-SDwSMHVbGG/data/698f96faa/13cab38426f14fc48118726bff744e64/FLAGf44246cdc [2021-10-29 05:24:02,817 INFO L306 CDTParser]: Found 1 translation units. [2021-10-29 05:24:02,817 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47ace06d-4e18-4bb3-b95f-f1bf03015de2/sv-benchmarks/c/nla-digbench-scaling/freire1_unwindbound2.c [2021-10-29 05:24:02,823 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47ace06d-4e18-4bb3-b95f-f1bf03015de2/bin/utaipan-SDwSMHVbGG/data/698f96faa/13cab38426f14fc48118726bff744e64/FLAGf44246cdc [2021-10-29 05:24:03,195 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47ace06d-4e18-4bb3-b95f-f1bf03015de2/bin/utaipan-SDwSMHVbGG/data/698f96faa/13cab38426f14fc48118726bff744e64 [2021-10-29 05:24:03,197 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-29 05:24:03,199 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-29 05:24:03,201 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-29 05:24:03,201 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-29 05:24:03,204 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-29 05:24:03,205 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:24:03" (1/1) ... [2021-10-29 05:24:03,206 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ecc0655 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:24:03, skipping insertion in model container [2021-10-29 05:24:03,206 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:24:03" (1/1) ... [2021-10-29 05:24:03,214 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-29 05:24:03,229 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-29 05:24:03,394 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_47ace06d-4e18-4bb3-b95f-f1bf03015de2/sv-benchmarks/c/nla-digbench-scaling/freire1_unwindbound2.c[712,725] [2021-10-29 05:24:03,412 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 05:24:03,422 INFO L203 MainTranslator]: Completed pre-run [2021-10-29 05:24:03,436 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_47ace06d-4e18-4bb3-b95f-f1bf03015de2/sv-benchmarks/c/nla-digbench-scaling/freire1_unwindbound2.c[712,725] [2021-10-29 05:24:03,441 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 05:24:03,456 INFO L208 MainTranslator]: Completed translation [2021-10-29 05:24:03,456 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:24:03 WrapperNode [2021-10-29 05:24:03,457 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-29 05:24:03,458 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-29 05:24:03,458 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-29 05:24:03,458 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-29 05:24:03,467 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:24:03" (1/1) ... [2021-10-29 05:24:03,474 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:24:03" (1/1) ... [2021-10-29 05:24:03,495 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-29 05:24:03,496 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-29 05:24:03,496 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-29 05:24:03,496 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-29 05:24:03,505 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:24:03" (1/1) ... [2021-10-29 05:24:03,506 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:24:03" (1/1) ... [2021-10-29 05:24:03,507 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:24:03" (1/1) ... [2021-10-29 05:24:03,507 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:24:03" (1/1) ... [2021-10-29 05:24:03,513 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:24:03" (1/1) ... [2021-10-29 05:24:03,517 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:24:03" (1/1) ... [2021-10-29 05:24:03,519 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:24:03" (1/1) ... [2021-10-29 05:24:03,521 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-29 05:24:03,522 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-29 05:24:03,522 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-29 05:24:03,522 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-29 05:24:03,523 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:24:03" (1/1) ... [2021-10-29 05:24:03,531 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 05:24:03,543 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47ace06d-4e18-4bb3-b95f-f1bf03015de2/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 05:24:03,560 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47ace06d-4e18-4bb3-b95f-f1bf03015de2/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-29 05:24:03,589 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47ace06d-4e18-4bb3-b95f-f1bf03015de2/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-29 05:24:03,615 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-29 05:24:03,616 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-29 05:24:03,617 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-29 05:24:03,618 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-29 05:24:03,831 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-29 05:24:03,831 INFO L299 CfgBuilder]: Removed 9 assume(true) statements. [2021-10-29 05:24:03,834 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:24:03 BoogieIcfgContainer [2021-10-29 05:24:03,835 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-29 05:24:03,837 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-29 05:24:03,837 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-29 05:24:03,841 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-29 05:24:03,842 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 05:24:03" (1/3) ... [2021-10-29 05:24:03,843 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@119c1366 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:24:03, skipping insertion in model container [2021-10-29 05:24:03,843 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:24:03" (2/3) ... [2021-10-29 05:24:03,844 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@119c1366 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:24:03, skipping insertion in model container [2021-10-29 05:24:03,844 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:24:03" (3/3) ... [2021-10-29 05:24:03,845 INFO L111 eAbstractionObserver]: Analyzing ICFG freire1_unwindbound2.c [2021-10-29 05:24:03,851 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-29 05:24:03,852 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-10-29 05:24:03,903 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-29 05:24:03,911 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-29 05:24:03,911 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-10-29 05:24:03,926 INFO L276 IsEmpty]: Start isEmpty. Operand has 13 states, 10 states have (on average 1.7) internal successors, (17), 12 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:24:03,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-29 05:24:03,932 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:24:03,932 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-29 05:24:03,933 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:24:03,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:24:03,940 INFO L85 PathProgramCache]: Analyzing trace with hash 71331668, now seen corresponding path program 1 times [2021-10-29 05:24:03,950 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:24:03,951 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477891102] [2021-10-29 05:24:03,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:24:03,952 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:24:04,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 05:24:04,110 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-29 05:24:04,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 05:24:04,181 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-29 05:24:04,185 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-10-29 05:24:04,186 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 05:24:04,189 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 05:24:04,190 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-29 05:24:04,195 INFO L731 BasicCegarLoop]: Path program histogram: [1] [2021-10-29 05:24:04,198 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-29 05:24:04,230 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.10 05:24:04 BoogieIcfgContainer [2021-10-29 05:24:04,230 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-29 05:24:04,240 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-29 05:24:04,240 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-29 05:24:04,240 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-29 05:24:04,241 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:24:03" (3/4) ... [2021-10-29 05:24:04,246 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-29 05:24:04,247 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-29 05:24:04,251 INFO L168 Benchmark]: Toolchain (without parser) took 1049.06 ms. Allocated memory was 109.1 MB in the beginning and 155.2 MB in the end (delta: 46.1 MB). Free memory was 77.0 MB in the beginning and 102.1 MB in the end (delta: -25.2 MB). Peak memory consumption was 19.9 MB. Max. memory is 16.1 GB. [2021-10-29 05:24:04,252 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 109.1 MB. Free memory is still 61.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 05:24:04,255 INFO L168 Benchmark]: CACSL2BoogieTranslator took 256.46 ms. Allocated memory was 109.1 MB in the beginning and 155.2 MB in the end (delta: 46.1 MB). Free memory was 77.0 MB in the beginning and 130.2 MB in the end (delta: -53.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-29 05:24:04,256 INFO L168 Benchmark]: Boogie Procedure Inliner took 37.22 ms. Allocated memory is still 155.2 MB. Free memory was 130.2 MB in the beginning and 128.8 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 05:24:04,257 INFO L168 Benchmark]: Boogie Preprocessor took 25.26 ms. Allocated memory is still 155.2 MB. Free memory was 128.8 MB in the beginning and 127.3 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 05:24:04,259 INFO L168 Benchmark]: RCFGBuilder took 313.49 ms. Allocated memory is still 155.2 MB. Free memory was 127.3 MB in the beginning and 116.7 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-29 05:24:04,266 INFO L168 Benchmark]: TraceAbstraction took 393.35 ms. Allocated memory is still 155.2 MB. Free memory was 116.7 MB in the beginning and 102.1 MB in the end (delta: 14.5 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-29 05:24:04,268 INFO L168 Benchmark]: Witness Printer took 7.07 ms. Allocated memory is still 155.2 MB. Free memory is still 102.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 05:24:04,272 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 109.1 MB. Free memory is still 61.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 256.46 ms. Allocated memory was 109.1 MB in the beginning and 155.2 MB in the end (delta: 46.1 MB). Free memory was 77.0 MB in the beginning and 130.2 MB in the end (delta: -53.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 37.22 ms. Allocated memory is still 155.2 MB. Free memory was 130.2 MB in the beginning and 128.8 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 25.26 ms. Allocated memory is still 155.2 MB. Free memory was 128.8 MB in the beginning and 127.3 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 313.49 ms. Allocated memory is still 155.2 MB. Free memory was 127.3 MB in the beginning and 116.7 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 393.35 ms. Allocated memory is still 155.2 MB. Free memory was 116.7 MB in the beginning and 102.1 MB in the end (delta: 14.5 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Witness Printer took 7.07 ms. Allocated memory is still 155.2 MB. Free memory is still 102.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - 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 33, overapproximation of someBinaryArithmeticDOUBLEoperation at line 29. Possible FailurePath: [L24] int counter = 0; [L26] int r; [L27] double a, x; [L28] a = __VERIFIER_nondet_double() [L29] x = a / 2.0 [L30] r = 0 VAL [counter=0] [L32] EXPR counter++ VAL [counter=1] [L32] COND TRUE counter++<2 [L17] COND TRUE !(cond) VAL [counter=1] [L19] reach_error() VAL [counter=1] - UnprovableResult [Line: 19]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 13 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.2s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=13occurred in iteration=0, InterpolantAutomatonStates: 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, 5 NumberOfCodeBlocks, 5 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 [2021-10-29 05:24:04,323 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47ace06d-4e18-4bb3-b95f-f1bf03015de2/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-b2eff8b [2021-10-29 05:24:07,004 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-29 05:24:07,007 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-29 05:24:07,040 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-29 05:24:07,041 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-29 05:24:07,042 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-29 05:24:07,044 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-29 05:24:07,047 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-29 05:24:07,049 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-29 05:24:07,051 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-29 05:24:07,052 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-29 05:24:07,053 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-29 05:24:07,054 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-29 05:24:07,056 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-29 05:24:07,057 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-29 05:24:07,059 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-29 05:24:07,060 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-29 05:24:07,062 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-29 05:24:07,064 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-29 05:24:07,067 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-29 05:24:07,069 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-29 05:24:07,071 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-29 05:24:07,072 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-29 05:24:07,074 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-29 05:24:07,078 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-29 05:24:07,078 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-29 05:24:07,079 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-29 05:24:07,080 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-29 05:24:07,081 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-29 05:24:07,082 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-29 05:24:07,083 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-29 05:24:07,084 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-29 05:24:07,085 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-29 05:24:07,087 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-29 05:24:07,088 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-29 05:24:07,088 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-29 05:24:07,089 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-29 05:24:07,090 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-29 05:24:07,090 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-29 05:24:07,091 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-29 05:24:07,092 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-29 05:24:07,093 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47ace06d-4e18-4bb3-b95f-f1bf03015de2/bin/utaipan-SDwSMHVbGG/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-29 05:24:07,123 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-29 05:24:07,123 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-29 05:24:07,124 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-29 05:24:07,125 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-29 05:24:07,125 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-29 05:24:07,125 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-29 05:24:07,126 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-29 05:24:07,126 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-29 05:24:07,126 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-29 05:24:07,127 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-29 05:24:07,128 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-29 05:24:07,128 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-29 05:24:07,128 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-29 05:24:07,128 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-29 05:24:07,129 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-29 05:24:07,129 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-29 05:24:07,129 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-29 05:24:07,129 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-29 05:24:07,130 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-29 05:24:07,130 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-29 05:24:07,130 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-29 05:24:07,130 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-29 05:24:07,131 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-29 05:24:07,131 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-29 05:24:07,131 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-29 05:24:07,131 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-29 05:24:07,132 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 05:24:07,132 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-29 05:24:07,132 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-29 05:24:07,133 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-29 05:24:07,133 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-29 05:24:07,133 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-29 05:24:07,133 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-29 05:24:07,134 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-29 05:24:07,134 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-29 05:24:07,134 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_47ace06d-4e18-4bb3-b95f-f1bf03015de2/bin/utaipan-SDwSMHVbGG/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47ace06d-4e18-4bb3-b95f-f1bf03015de2/bin/utaipan-SDwSMHVbGG Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> de6052d9944b0ce145148179524f90cfdb820a3940df4791211047874b65b687 [2021-10-29 05:24:07,547 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-29 05:24:07,571 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-29 05:24:07,574 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-29 05:24:07,576 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-29 05:24:07,577 INFO L275 PluginConnector]: CDTParser initialized [2021-10-29 05:24:07,578 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47ace06d-4e18-4bb3-b95f-f1bf03015de2/bin/utaipan-SDwSMHVbGG/../../sv-benchmarks/c/nla-digbench-scaling/freire1_unwindbound2.c [2021-10-29 05:24:07,660 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47ace06d-4e18-4bb3-b95f-f1bf03015de2/bin/utaipan-SDwSMHVbGG/data/cb67c08b9/faef41a0434746e9b3a366f1e2a128bf/FLAG14a2e20ec [2021-10-29 05:24:08,187 INFO L306 CDTParser]: Found 1 translation units. [2021-10-29 05:24:08,189 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47ace06d-4e18-4bb3-b95f-f1bf03015de2/sv-benchmarks/c/nla-digbench-scaling/freire1_unwindbound2.c [2021-10-29 05:24:08,197 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47ace06d-4e18-4bb3-b95f-f1bf03015de2/bin/utaipan-SDwSMHVbGG/data/cb67c08b9/faef41a0434746e9b3a366f1e2a128bf/FLAG14a2e20ec [2021-10-29 05:24:08,547 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47ace06d-4e18-4bb3-b95f-f1bf03015de2/bin/utaipan-SDwSMHVbGG/data/cb67c08b9/faef41a0434746e9b3a366f1e2a128bf [2021-10-29 05:24:08,551 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-29 05:24:08,554 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-29 05:24:08,557 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-29 05:24:08,558 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-29 05:24:08,562 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-29 05:24:08,563 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:24:08" (1/1) ... [2021-10-29 05:24:08,565 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66b41822 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:24:08, skipping insertion in model container [2021-10-29 05:24:08,566 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:24:08" (1/1) ... [2021-10-29 05:24:08,575 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-29 05:24:08,595 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-29 05:24:08,809 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_47ace06d-4e18-4bb3-b95f-f1bf03015de2/sv-benchmarks/c/nla-digbench-scaling/freire1_unwindbound2.c[712,725] [2021-10-29 05:24:08,839 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 05:24:08,857 INFO L203 MainTranslator]: Completed pre-run [2021-10-29 05:24:08,877 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_47ace06d-4e18-4bb3-b95f-f1bf03015de2/sv-benchmarks/c/nla-digbench-scaling/freire1_unwindbound2.c[712,725] [2021-10-29 05:24:08,897 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 05:24:08,933 INFO L208 MainTranslator]: Completed translation [2021-10-29 05:24:08,934 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:24:08 WrapperNode [2021-10-29 05:24:08,934 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-29 05:24:08,935 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-29 05:24:08,935 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-29 05:24:08,935 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-29 05:24:08,943 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:24:08" (1/1) ... [2021-10-29 05:24:08,964 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:24:08" (1/1) ... [2021-10-29 05:24:09,015 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-29 05:24:09,016 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-29 05:24:09,016 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-29 05:24:09,017 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-29 05:24:09,026 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:24:08" (1/1) ... [2021-10-29 05:24:09,026 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:24:08" (1/1) ... [2021-10-29 05:24:09,034 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:24:08" (1/1) ... [2021-10-29 05:24:09,034 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:24:08" (1/1) ... [2021-10-29 05:24:09,059 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:24:08" (1/1) ... [2021-10-29 05:24:09,063 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:24:08" (1/1) ... [2021-10-29 05:24:09,065 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:24:08" (1/1) ... [2021-10-29 05:24:09,068 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-29 05:24:09,069 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-29 05:24:09,069 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-29 05:24:09,069 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-29 05:24:09,070 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:24:08" (1/1) ... [2021-10-29 05:24:09,080 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 05:24:09,094 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47ace06d-4e18-4bb3-b95f-f1bf03015de2/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 05:24:09,108 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47ace06d-4e18-4bb3-b95f-f1bf03015de2/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-29 05:24:09,135 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47ace06d-4e18-4bb3-b95f-f1bf03015de2/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-29 05:24:09,172 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-29 05:24:09,172 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-29 05:24:09,172 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-29 05:24:09,172 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-29 05:24:15,501 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-29 05:24:15,501 INFO L299 CfgBuilder]: Removed 9 assume(true) statements. [2021-10-29 05:24:15,503 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:24:15 BoogieIcfgContainer [2021-10-29 05:24:15,503 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-29 05:24:15,505 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-29 05:24:15,506 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-29 05:24:15,509 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-29 05:24:15,510 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 05:24:08" (1/3) ... [2021-10-29 05:24:15,511 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c41e0c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:24:15, skipping insertion in model container [2021-10-29 05:24:15,511 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:24:08" (2/3) ... [2021-10-29 05:24:15,511 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c41e0c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:24:15, skipping insertion in model container [2021-10-29 05:24:15,512 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:24:15" (3/3) ... [2021-10-29 05:24:15,513 INFO L111 eAbstractionObserver]: Analyzing ICFG freire1_unwindbound2.c [2021-10-29 05:24:15,520 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-29 05:24:15,520 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-10-29 05:24:15,582 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-29 05:24:15,590 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-29 05:24:15,591 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-10-29 05:24:15,605 INFO L276 IsEmpty]: Start isEmpty. Operand has 16 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 15 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:24:15,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-29 05:24:15,614 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:24:15,615 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-29 05:24:15,615 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:24:15,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:24:15,629 INFO L85 PathProgramCache]: Analyzing trace with hash 889571274, now seen corresponding path program 1 times [2021-10-29 05:24:15,642 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:24:15,642 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [331484030] [2021-10-29 05:24:15,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:24:15,643 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:24:15,644 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47ace06d-4e18-4bb3-b95f-f1bf03015de2/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:24:15,645 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47ace06d-4e18-4bb3-b95f-f1bf03015de2/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:24:15,647 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47ace06d-4e18-4bb3-b95f-f1bf03015de2/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-29 05:24:18,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:24:18,700 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-29 05:24:18,704 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:24:38,951 WARN L838 $PredicateComparison]: unable to prove that (or (and (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32)) (exists ((ULTIMATE.start_main_~a~0 (_ FloatingPoint 11 53))) (not (= ((_ fp.to_sbv 32) roundTowardZero (fp.add roundNearestTiesToEven (let ((.cse0 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))) (fp.sub roundNearestTiesToEven (fp.sub roundNearestTiesToEven .cse0 ULTIMATE.start_main_~a~0) .cse0)) (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (_ bv2 32)) (fp.div roundNearestTiesToEven ULTIMATE.start_main_~a~0 ((_ to_fp 11 53) roundNearestTiesToEven 2.0))))) (_ bv0 32))))) (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv1 32))) is different from false [2021-10-29 05:24:47,177 WARN L838 $PredicateComparison]: unable to prove that (exists ((ULTIMATE.start_main_~a~0 (_ FloatingPoint 11 53))) (not (= ((_ fp.to_sbv 32) roundTowardZero (fp.add roundNearestTiesToEven (let ((.cse0 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))) (fp.sub roundNearestTiesToEven (fp.sub roundNearestTiesToEven .cse0 ULTIMATE.start_main_~a~0) .cse0)) (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (_ bv2 32)) (fp.div roundNearestTiesToEven ULTIMATE.start_main_~a~0 ((_ to_fp 11 53) roundNearestTiesToEven 2.0))))) (_ bv0 32)))) is different from false [2021-10-29 05:24:49,212 WARN L860 $PredicateComparison]: unable to prove that (exists ((ULTIMATE.start_main_~a~0 (_ FloatingPoint 11 53))) (not (= ((_ fp.to_sbv 32) roundTowardZero (fp.add roundNearestTiesToEven (let ((.cse0 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))) (fp.sub roundNearestTiesToEven (fp.sub roundNearestTiesToEven .cse0 ULTIMATE.start_main_~a~0) .cse0)) (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (_ bv2 32)) (fp.div roundNearestTiesToEven ULTIMATE.start_main_~a~0 ((_ to_fp 11 53) roundNearestTiesToEven 2.0))))) (_ bv0 32)))) is different from true [2021-10-29 05:24:49,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:24:49,214 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:24:55,617 WARN L838 $PredicateComparison]: unable to prove that (= ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (bvmul c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0)) c_ULTIMATE.start_main_~a~0) ((_ to_fp 11 53) c_currentRoundingMode c_ULTIMATE.start_main_~r~0)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) c_ULTIMATE.start_main_~x~0))) (_ bv0 32)) is different from false [2021-10-29 05:24:57,673 WARN L860 $PredicateComparison]: unable to prove that (= ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (bvmul c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0)) c_ULTIMATE.start_main_~a~0) ((_ to_fp 11 53) c_currentRoundingMode c_ULTIMATE.start_main_~r~0)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) c_ULTIMATE.start_main_~x~0))) (_ bv0 32)) is different from true [2021-10-29 05:25:07,961 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ULTIMATE.start_main_~a~0_8 (_ FloatingPoint 11 53))) (= ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))) (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode .cse0 v_ULTIMATE.start_main_~a~0_8) .cse0)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) (fp.div c_currentRoundingMode v_ULTIMATE.start_main_~a~0_8 ((_ to_fp 11 53) c_currentRoundingMode 2.0))))) (_ bv0 32))) is different from false [2021-10-29 05:25:10,006 WARN L860 $PredicateComparison]: unable to prove that (forall ((v_ULTIMATE.start_main_~a~0_8 (_ FloatingPoint 11 53))) (= ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))) (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode .cse0 v_ULTIMATE.start_main_~a~0_8) .cse0)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) (fp.div c_currentRoundingMode v_ULTIMATE.start_main_~a~0_8 ((_ to_fp 11 53) c_currentRoundingMode 2.0))))) (_ bv0 32))) is different from true [2021-10-29 05:25:10,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:25:10,008 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:25:10,008 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [331484030] [2021-10-29 05:25:10,009 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [331484030] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:25:10,009 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:25:10,009 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 8 [2021-10-29 05:25:10,011 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910749296] [2021-10-29 05:25:10,017 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-29 05:25:10,017 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 05:25:10,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-29 05:25:10,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=13, Unknown=7, NotChecked=36, Total=72 [2021-10-29 05:25:10,036 INFO L87 Difference]: Start difference. First operand has 16 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 15 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 9 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:25:12,938 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ULTIMATE.start_main_~a~0_8 (_ FloatingPoint 11 53))) (= ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))) (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode .cse0 v_ULTIMATE.start_main_~a~0_8) .cse0)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) (fp.div c_currentRoundingMode v_ULTIMATE.start_main_~a~0_8 ((_ to_fp 11 53) c_currentRoundingMode 2.0))))) (_ bv0 32))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false [2021-10-29 05:25:14,987 WARN L860 $PredicateComparison]: unable to prove that (and (forall ((v_ULTIMATE.start_main_~a~0_8 (_ FloatingPoint 11 53))) (= ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))) (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode .cse0 v_ULTIMATE.start_main_~a~0_8) .cse0)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) (fp.div c_currentRoundingMode v_ULTIMATE.start_main_~a~0_8 ((_ to_fp 11 53) c_currentRoundingMode 2.0))))) (_ bv0 32))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2021-10-29 05:25:17,033 WARN L838 $PredicateComparison]: unable to prove that (and (= ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (bvmul c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0)) c_ULTIMATE.start_main_~a~0) ((_ to_fp 11 53) c_currentRoundingMode c_ULTIMATE.start_main_~r~0)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) c_ULTIMATE.start_main_~x~0))) (_ bv0 32)) (= c_ULTIMATE.start_main_~r~0 (_ bv0 32)) (= c_ULTIMATE.start_main_~x~0 (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~a~0 ((_ to_fp 11 53) c_currentRoundingMode 2.0))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false [2021-10-29 05:25:19,087 WARN L860 $PredicateComparison]: unable to prove that (and (= ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (bvmul c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0)) c_ULTIMATE.start_main_~a~0) ((_ to_fp 11 53) c_currentRoundingMode c_ULTIMATE.start_main_~r~0)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) c_ULTIMATE.start_main_~x~0))) (_ bv0 32)) (= c_ULTIMATE.start_main_~r~0 (_ bv0 32)) (= c_ULTIMATE.start_main_~x~0 (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~a~0 ((_ to_fp 11 53) c_currentRoundingMode 2.0))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2021-10-29 05:25:29,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:25:29,103 INFO L93 Difference]: Finished difference Result 34 states and 45 transitions. [2021-10-29 05:25:29,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-29 05:25:29,104 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-10-29 05:25:29,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:25:29,111 INFO L225 Difference]: With dead ends: 34 [2021-10-29 05:25:29,111 INFO L226 Difference]: Without dead ends: 16 [2021-10-29 05:25:29,114 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 27.2s TimeCoverageRelationStatistics Valid=23, Invalid=20, Unknown=11, NotChecked=78, Total=132 [2021-10-29 05:25:29,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-10-29 05:25:29,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 15. [2021-10-29 05:25:29,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 14 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:25:29,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2021-10-29 05:25:29,140 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 6 [2021-10-29 05:25:29,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:25:29,140 INFO L470 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2021-10-29 05:25:29,141 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:25:29,141 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2021-10-29 05:25:29,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-29 05:25:29,141 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:25:29,142 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:25:29,158 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47ace06d-4e18-4bb3-b95f-f1bf03015de2/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-10-29 05:25:29,347 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47ace06d-4e18-4bb3-b95f-f1bf03015de2/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:25:29,347 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:25:29,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:25:29,348 INFO L85 PathProgramCache]: Analyzing trace with hash 1806862075, now seen corresponding path program 1 times [2021-10-29 05:25:29,349 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:25:29,349 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1990755841] [2021-10-29 05:25:29,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:25:29,350 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:25:29,350 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47ace06d-4e18-4bb3-b95f-f1bf03015de2/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:25:29,354 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47ace06d-4e18-4bb3-b95f-f1bf03015de2/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:25:29,385 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47ace06d-4e18-4bb3-b95f-f1bf03015de2/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-29 05:25:29,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:25:29,847 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-29 05:25:29,848 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:25:29,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:25:29,940 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:25:30,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:25:30,051 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:25:30,052 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1990755841] [2021-10-29 05:25:30,052 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1990755841] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:25:30,052 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:25:30,052 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-10-29 05:25:30,053 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349779461] [2021-10-29 05:25:30,054 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-29 05:25:30,054 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 05:25:30,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-29 05:25:30,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-29 05:25:30,056 INFO L87 Difference]: Start difference. First operand 15 states and 17 transitions. Second operand has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:25:32,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:25:32,804 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2021-10-29 05:25:32,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-29 05:25:32,805 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-10-29 05:25:32,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:25:32,806 INFO L225 Difference]: With dead ends: 19 [2021-10-29 05:25:32,806 INFO L226 Difference]: Without dead ends: 15 [2021-10-29 05:25:32,807 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-10-29 05:25:32,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-10-29 05:25:32,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2021-10-29 05:25:32,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 14 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:25:32,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2021-10-29 05:25:32,812 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 7 [2021-10-29 05:25:32,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:25:32,812 INFO L470 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2021-10-29 05:25:32,813 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:25:32,813 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2021-10-29 05:25:32,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-29 05:25:32,814 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:25:32,814 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:25:32,832 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47ace06d-4e18-4bb3-b95f-f1bf03015de2/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-10-29 05:25:33,023 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47ace06d-4e18-4bb3-b95f-f1bf03015de2/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:25:33,024 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:25:33,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:25:33,025 INFO L85 PathProgramCache]: Analyzing trace with hash 1274494228, now seen corresponding path program 1 times [2021-10-29 05:25:33,025 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:25:33,026 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1528017706] [2021-10-29 05:25:33,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:25:33,026 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:25:33,026 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47ace06d-4e18-4bb3-b95f-f1bf03015de2/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:25:33,028 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47ace06d-4e18-4bb3-b95f-f1bf03015de2/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:25:33,054 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47ace06d-4e18-4bb3-b95f-f1bf03015de2/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-29 05:25:33,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:25:33,465 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-29 05:25:33,466 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:25:52,234 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (= ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (bvmul c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0)) c_ULTIMATE.start_main_~a~0) ((_ to_fp 11 53) c_currentRoundingMode c_ULTIMATE.start_main_~r~0)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) c_ULTIMATE.start_main_~x~0))) (_ bv0 32)))) (or (and .cse0 (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv1 32))) (and (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32)) (not .cse0)))) is different from false [2021-10-29 05:25:54,297 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 (= ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (bvmul c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0)) c_ULTIMATE.start_main_~a~0) ((_ to_fp 11 53) c_currentRoundingMode c_ULTIMATE.start_main_~r~0)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) c_ULTIMATE.start_main_~x~0))) (_ bv0 32)))) (or (and .cse0 (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv1 32))) (and (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32)) (not .cse0)))) is different from true [2021-10-29 05:26:00,501 WARN L838 $PredicateComparison]: unable to prove that (= ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (bvmul c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0)) c_ULTIMATE.start_main_~a~0) ((_ to_fp 11 53) c_currentRoundingMode c_ULTIMATE.start_main_~r~0)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) c_ULTIMATE.start_main_~x~0))) (_ bv0 32)) is different from false [2021-10-29 05:26:02,564 WARN L860 $PredicateComparison]: unable to prove that (= ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (bvmul c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0)) c_ULTIMATE.start_main_~a~0) ((_ to_fp 11 53) c_currentRoundingMode c_ULTIMATE.start_main_~r~0)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) c_ULTIMATE.start_main_~x~0))) (_ bv0 32)) is different from true [2021-10-29 05:26:14,993 WARN L838 $PredicateComparison]: unable to prove that (and (exists ((ULTIMATE.start_main_~a~0 (_ FloatingPoint 11 53)) (ULTIMATE.start_main_~x~0 (_ FloatingPoint 11 53)) (currentRoundingMode RoundingMode) (ULTIMATE.start_main_~r~0 (_ BitVec 32))) (= ((_ fp.to_sbv 32) roundTowardZero (fp.add currentRoundingMode (fp.sub currentRoundingMode (fp.sub currentRoundingMode ((_ to_fp 11 53) currentRoundingMode (bvmul ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~r~0)) ULTIMATE.start_main_~a~0) ((_ to_fp 11 53) currentRoundingMode ULTIMATE.start_main_~r~0)) (fp.mul currentRoundingMode ((_ to_fp 11 53) currentRoundingMode (_ bv2 32)) ULTIMATE.start_main_~x~0))) (_ bv0 32))) (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv1 32))) is different from false [2021-10-29 05:26:15,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:26:15,018 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:26:33,738 WARN L838 $PredicateComparison]: unable to prove that (or (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32)) (= ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (bvmul c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0)) c_ULTIMATE.start_main_~a~0) ((_ to_fp 11 53) c_currentRoundingMode c_ULTIMATE.start_main_~r~0)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) c_ULTIMATE.start_main_~x~0))) (_ bv0 32))) is different from false [2021-10-29 05:26:35,800 WARN L860 $PredicateComparison]: unable to prove that (or (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32)) (= ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (bvmul c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0)) c_ULTIMATE.start_main_~a~0) ((_ to_fp 11 53) c_currentRoundingMode c_ULTIMATE.start_main_~r~0)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) c_ULTIMATE.start_main_~x~0))) (_ bv0 32))) is different from true [2021-10-29 05:26:35,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:26:35,823 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:26:35,823 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1528017706] [2021-10-29 05:26:35,823 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1528017706] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:26:35,824 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:26:35,824 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2021-10-29 05:26:35,824 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407987002] [2021-10-29 05:26:35,825 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-29 05:26:35,825 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 05:26:35,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-29 05:26:35,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=4, Unknown=7, NotChecked=20, Total=42 [2021-10-29 05:26:35,826 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:26:40,087 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32))) (.cse0 (= ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (bvmul c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0)) c_ULTIMATE.start_main_~a~0) ((_ to_fp 11 53) c_currentRoundingMode c_ULTIMATE.start_main_~r~0)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) c_ULTIMATE.start_main_~x~0))) (_ bv0 32)))) (and (or (and .cse0 (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv1 32))) (and .cse1 (not .cse0))) (or .cse1 .cse0))) is different from false [2021-10-29 05:26:42,154 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32))) (.cse0 (= ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (bvmul c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0)) c_ULTIMATE.start_main_~a~0) ((_ to_fp 11 53) c_currentRoundingMode c_ULTIMATE.start_main_~r~0)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) c_ULTIMATE.start_main_~x~0))) (_ bv0 32)))) (and (or (and .cse0 (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv1 32))) (and .cse1 (not .cse0))) (or .cse1 .cse0))) is different from true [2021-10-29 05:26:44,214 WARN L838 $PredicateComparison]: unable to prove that (and (exists ((ULTIMATE.start_main_~a~0 (_ FloatingPoint 11 53)) (ULTIMATE.start_main_~x~0 (_ FloatingPoint 11 53)) (currentRoundingMode RoundingMode) (ULTIMATE.start_main_~r~0 (_ BitVec 32))) (= ((_ fp.to_sbv 32) roundTowardZero (fp.add currentRoundingMode (fp.sub currentRoundingMode (fp.sub currentRoundingMode ((_ to_fp 11 53) currentRoundingMode (bvmul ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~r~0)) ULTIMATE.start_main_~a~0) ((_ to_fp 11 53) currentRoundingMode ULTIMATE.start_main_~r~0)) (fp.mul currentRoundingMode ((_ to_fp 11 53) currentRoundingMode (_ bv2 32)) ULTIMATE.start_main_~x~0))) (_ bv0 32))) (not (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32))) (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv1 32))) is different from false [2021-10-29 05:26:46,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:26:46,443 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2021-10-29 05:26:46,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-29 05:26:46,443 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-10-29 05:26:46,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:26:46,444 INFO L225 Difference]: With dead ends: 19 [2021-10-29 05:26:46,444 INFO L226 Difference]: Without dead ends: 15 [2021-10-29 05:26:46,445 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 20.7s TimeCoverageRelationStatistics Valid=15, Invalid=5, Unknown=10, NotChecked=42, Total=72 [2021-10-29 05:26:46,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-10-29 05:26:46,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2021-10-29 05:26:46,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 14 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:26:46,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2021-10-29 05:26:46,449 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 9 [2021-10-29 05:26:46,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:26:46,449 INFO L470 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2021-10-29 05:26:46,450 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:26:46,450 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2021-10-29 05:26:46,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-29 05:26:46,451 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:26:46,451 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2021-10-29 05:26:46,469 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47ace06d-4e18-4bb3-b95f-f1bf03015de2/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-10-29 05:26:46,656 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47ace06d-4e18-4bb3-b95f-f1bf03015de2/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:26:46,656 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:26:46,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:26:46,657 INFO L85 PathProgramCache]: Analyzing trace with hash 855725686, now seen corresponding path program 1 times [2021-10-29 05:26:46,657 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:26:46,657 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [797248451] [2021-10-29 05:26:46,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:26:46,658 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:26:46,658 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47ace06d-4e18-4bb3-b95f-f1bf03015de2/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:26:46,659 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47ace06d-4e18-4bb3-b95f-f1bf03015de2/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:26:46,660 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47ace06d-4e18-4bb3-b95f-f1bf03015de2/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-29 05:26:56,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 05:26:56,039 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-29 05:27:10,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 05:27:10,603 INFO L133 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2021-10-29 05:27:10,603 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-10-29 05:27:10,604 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 05:27:10,606 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 05:27:10,655 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47ace06d-4e18-4bb3-b95f-f1bf03015de2/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-29 05:27:10,807 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47ace06d-4e18-4bb3-b95f-f1bf03015de2/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:27:10,810 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2021-10-29 05:27:10,813 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-29 05:27:10,840 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.10 05:27:10 BoogieIcfgContainer [2021-10-29 05:27:10,840 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-29 05:27:10,841 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-29 05:27:10,841 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-29 05:27:10,841 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-29 05:27:10,855 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:24:15" (3/4) ... [2021-10-29 05:27:10,856 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-29 05:27:10,931 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47ace06d-4e18-4bb3-b95f-f1bf03015de2/bin/utaipan-SDwSMHVbGG/witness.graphml [2021-10-29 05:27:10,937 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-29 05:27:10,942 INFO L168 Benchmark]: Toolchain (without parser) took 182386.92 ms. Allocated memory was 69.2 MB in the beginning and 86.0 MB in the end (delta: 16.8 MB). Free memory was 48.3 MB in the beginning and 60.4 MB in the end (delta: -12.2 MB). Peak memory consumption was 5.5 MB. Max. memory is 16.1 GB. [2021-10-29 05:27:10,943 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 69.2 MB. Free memory is still 49.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 05:27:10,944 INFO L168 Benchmark]: CACSL2BoogieTranslator took 376.86 ms. Allocated memory is still 69.2 MB. Free memory was 48.0 MB in the beginning and 52.2 MB in the end (delta: -4.2 MB). Peak memory consumption was 13.9 MB. Max. memory is 16.1 GB. [2021-10-29 05:27:10,947 INFO L168 Benchmark]: Boogie Procedure Inliner took 80.26 ms. Allocated memory is still 69.2 MB. Free memory was 52.2 MB in the beginning and 50.6 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 05:27:10,948 INFO L168 Benchmark]: Boogie Preprocessor took 51.89 ms. Allocated memory is still 69.2 MB. Free memory was 50.6 MB in the beginning and 49.3 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 05:27:10,950 INFO L168 Benchmark]: RCFGBuilder took 6434.41 ms. Allocated memory is still 69.2 MB. Free memory was 49.3 MB in the beginning and 39.6 MB in the end (delta: 9.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-29 05:27:10,951 INFO L168 Benchmark]: TraceAbstraction took 175334.95 ms. Allocated memory was 69.2 MB in the beginning and 86.0 MB in the end (delta: 16.8 MB). Free memory was 39.1 MB in the beginning and 62.5 MB in the end (delta: -23.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 05:27:10,951 INFO L168 Benchmark]: Witness Printer took 99.31 ms. Allocated memory is still 86.0 MB. Free memory was 62.5 MB in the beginning and 60.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 05:27:10,954 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 69.2 MB. Free memory is still 49.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 376.86 ms. Allocated memory is still 69.2 MB. Free memory was 48.0 MB in the beginning and 52.2 MB in the end (delta: -4.2 MB). Peak memory consumption was 13.9 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 80.26 ms. Allocated memory is still 69.2 MB. Free memory was 52.2 MB in the beginning and 50.6 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 51.89 ms. Allocated memory is still 69.2 MB. Free memory was 50.6 MB in the beginning and 49.3 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 6434.41 ms. Allocated memory is still 69.2 MB. Free memory was 49.3 MB in the beginning and 39.6 MB in the end (delta: 9.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 175334.95 ms. Allocated memory was 69.2 MB in the beginning and 86.0 MB in the end (delta: 16.8 MB). Free memory was 39.1 MB in the beginning and 62.5 MB in the end (delta: -23.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 99.31 ms. Allocated memory is still 86.0 MB. Free memory was 62.5 MB in the beginning and 60.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 19]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L24] int counter = 0; VAL [counter=0] [L26] int r; [L27] double a, x; [L28] a = __VERIFIER_nondet_double() [L29] x = a / 2.0 [L30] r = 0 VAL [counter=0] [L32] EXPR counter++ VAL [counter=1] [L32] COND TRUE counter++<2 [L17] COND FALSE !(!(cond)) VAL [counter=1] [L35] COND FALSE !(!(x > r)) [L37] x = x - r [L38] r = r + 1 VAL [counter=1] [L32] EXPR counter++ VAL [counter=2] [L32] COND TRUE counter++<2 [L17] COND TRUE !(cond) VAL [counter=2] [L19] reach_error() VAL [counter=2] - UnprovableResult [Line: 19]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 16 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 175.2s, OverallIterations: 4, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 32.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 36 SDtfs, 8 SDslu, 64 SDs, 0 SdLazy, 17 SolverSat, 3 SolverUnsat, 7 SolverUnknown, 0 SolverNotchecked, 17.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 44 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 12 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 48.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=16occurred in iteration=0, InterpolantAutomatonStates: 15, 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, 13.0s SatisfiabilityAnalysisTime, 113.9s InterpolantComputationTime, 32 NumberOfCodeBlocks, 32 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 38 ConstructedInterpolants, 4 QuantifiedInterpolants, 440 SizeOfPredicates, 13 NumberOfNonLiveVariables, 103 ConjunctsInSsa, 15 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 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! [2021-10-29 05:27:11,143 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47ace06d-4e18-4bb3-b95f-f1bf03015de2/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...