./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/freire2_valuebound5.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e943c265 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5623a354-cd3c-4acb-821d-b010df74aec5/bin/utaipan-9zjyvhn0QE/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5623a354-cd3c-4acb-821d-b010df74aec5/bin/utaipan-9zjyvhn0QE/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5623a354-cd3c-4acb-821d-b010df74aec5/bin/utaipan-9zjyvhn0QE/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5623a354-cd3c-4acb-821d-b010df74aec5/bin/utaipan-9zjyvhn0QE/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/freire2_valuebound5.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5623a354-cd3c-4acb-821d-b010df74aec5/bin/utaipan-9zjyvhn0QE/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5623a354-cd3c-4acb-821d-b010df74aec5/bin/utaipan-9zjyvhn0QE --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 644fedc149cdfea0c0b39babfd09647f4fb573c27a060d8d57a08553303664a9 ................................................................................................................................................................................................................................................................................ 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_5623a354-cd3c-4acb-821d-b010df74aec5/bin/utaipan-9zjyvhn0QE/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5623a354-cd3c-4acb-821d-b010df74aec5/bin/utaipan-9zjyvhn0QE/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5623a354-cd3c-4acb-821d-b010df74aec5/bin/utaipan-9zjyvhn0QE/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5623a354-cd3c-4acb-821d-b010df74aec5/bin/utaipan-9zjyvhn0QE/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/freire2_valuebound5.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5623a354-cd3c-4acb-821d-b010df74aec5/bin/utaipan-9zjyvhn0QE/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5623a354-cd3c-4acb-821d-b010df74aec5/bin/utaipan-9zjyvhn0QE --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 644fedc149cdfea0c0b39babfd09647f4fb573c27a060d8d57a08553303664a9 ................................................................................................................................................................................................................................................................................................................................................................................................................................ 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-e943c26 [2021-10-24 09:22:23,929 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-24 09:22:23,931 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-24 09:22:24,008 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-24 09:22:24,009 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-24 09:22:24,010 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-24 09:22:24,012 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-24 09:22:24,015 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-24 09:22:24,018 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-24 09:22:24,019 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-24 09:22:24,020 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-24 09:22:24,022 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-24 09:22:24,023 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-24 09:22:24,024 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-24 09:22:24,026 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-24 09:22:24,028 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-24 09:22:24,029 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-24 09:22:24,030 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-24 09:22:24,033 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-24 09:22:24,036 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-24 09:22:24,038 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-24 09:22:24,040 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-24 09:22:24,042 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-24 09:22:24,043 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-24 09:22:24,047 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-24 09:22:24,048 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-24 09:22:24,049 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-24 09:22:24,050 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-24 09:22:24,051 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-24 09:22:24,052 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-24 09:22:24,053 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-24 09:22:24,054 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-24 09:22:24,055 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-24 09:22:24,056 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-24 09:22:24,058 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-24 09:22:24,058 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-24 09:22:24,059 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-24 09:22:24,060 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-24 09:22:24,060 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-24 09:22:24,061 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-24 09:22:24,062 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-24 09:22:24,063 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5623a354-cd3c-4acb-821d-b010df74aec5/bin/utaipan-9zjyvhn0QE/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-24 09:22:24,095 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-24 09:22:24,099 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-24 09:22:24,100 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-24 09:22:24,100 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-24 09:22:24,101 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-24 09:22:24,101 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-24 09:22:24,101 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-24 09:22:24,101 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-24 09:22:24,108 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-24 09:22:24,108 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-24 09:22:24,109 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-24 09:22:24,109 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-24 09:22:24,109 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-24 09:22:24,110 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-24 09:22:24,110 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-24 09:22:24,111 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-24 09:22:24,112 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-24 09:22:24,112 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-24 09:22:24,112 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-24 09:22:24,113 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-24 09:22:24,113 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-24 09:22:24,113 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-24 09:22:24,113 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-24 09:22:24,114 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-24 09:22:24,114 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-24 09:22:24,114 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-24 09:22:24,114 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-24 09:22:24,115 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-24 09:22:24,115 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-24 09:22:24,117 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-24 09:22:24,117 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 09:22:24,117 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-24 09:22:24,117 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-24 09:22:24,118 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-24 09:22:24,118 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-24 09:22:24,118 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-24 09:22:24,119 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-24 09:22:24,119 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-24 09:22:24,119 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-24 09:22:24,119 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_5623a354-cd3c-4acb-821d-b010df74aec5/bin/utaipan-9zjyvhn0QE/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5623a354-cd3c-4acb-821d-b010df74aec5/bin/utaipan-9zjyvhn0QE Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 644fedc149cdfea0c0b39babfd09647f4fb573c27a060d8d57a08553303664a9 [2021-10-24 09:22:24,446 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-24 09:22:24,478 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-24 09:22:24,482 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-24 09:22:24,483 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-24 09:22:24,484 INFO L275 PluginConnector]: CDTParser initialized [2021-10-24 09:22:24,485 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5623a354-cd3c-4acb-821d-b010df74aec5/bin/utaipan-9zjyvhn0QE/../../sv-benchmarks/c/nla-digbench-scaling/freire2_valuebound5.c [2021-10-24 09:22:24,573 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5623a354-cd3c-4acb-821d-b010df74aec5/bin/utaipan-9zjyvhn0QE/data/2b88c02ae/414202902e46439197ccb2e1bc598f26/FLAG529be5978 [2021-10-24 09:22:25,112 INFO L306 CDTParser]: Found 1 translation units. [2021-10-24 09:22:25,113 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5623a354-cd3c-4acb-821d-b010df74aec5/sv-benchmarks/c/nla-digbench-scaling/freire2_valuebound5.c [2021-10-24 09:22:25,126 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5623a354-cd3c-4acb-821d-b010df74aec5/bin/utaipan-9zjyvhn0QE/data/2b88c02ae/414202902e46439197ccb2e1bc598f26/FLAG529be5978 [2021-10-24 09:22:25,454 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5623a354-cd3c-4acb-821d-b010df74aec5/bin/utaipan-9zjyvhn0QE/data/2b88c02ae/414202902e46439197ccb2e1bc598f26 [2021-10-24 09:22:25,458 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-24 09:22:25,461 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-24 09:22:25,466 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-24 09:22:25,466 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-24 09:22:25,470 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-24 09:22:25,471 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:22:25" (1/1) ... [2021-10-24 09:22:25,473 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33383d53 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:22:25, skipping insertion in model container [2021-10-24 09:22:25,474 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:22:25" (1/1) ... [2021-10-24 09:22:25,482 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-24 09:22:25,502 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-24 09:22:25,743 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_5623a354-cd3c-4acb-821d-b010df74aec5/sv-benchmarks/c/nla-digbench-scaling/freire2_valuebound5.c[709,722] [2021-10-24 09:22:25,778 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 09:22:25,786 INFO L203 MainTranslator]: Completed pre-run [2021-10-24 09:22:25,797 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_5623a354-cd3c-4acb-821d-b010df74aec5/sv-benchmarks/c/nla-digbench-scaling/freire2_valuebound5.c[709,722] [2021-10-24 09:22:25,806 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 09:22:25,821 INFO L208 MainTranslator]: Completed translation [2021-10-24 09:22:25,821 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:22:25 WrapperNode [2021-10-24 09:22:25,821 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-24 09:22:25,822 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-24 09:22:25,823 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-24 09:22:25,823 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-24 09:22:25,831 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:22:25" (1/1) ... [2021-10-24 09:22:25,839 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:22:25" (1/1) ... [2021-10-24 09:22:25,862 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-24 09:22:25,863 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-24 09:22:25,863 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-24 09:22:25,863 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-24 09:22:25,872 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:22:25" (1/1) ... [2021-10-24 09:22:25,872 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:22:25" (1/1) ... [2021-10-24 09:22:25,875 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:22:25" (1/1) ... [2021-10-24 09:22:25,875 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:22:25" (1/1) ... [2021-10-24 09:22:25,882 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:22:25" (1/1) ... [2021-10-24 09:22:25,886 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:22:25" (1/1) ... [2021-10-24 09:22:25,888 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:22:25" (1/1) ... [2021-10-24 09:22:25,890 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-24 09:22:25,891 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-24 09:22:25,892 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-24 09:22:25,892 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-24 09:22:25,893 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:22:25" (1/1) ... [2021-10-24 09:22:25,905 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 09:22:25,919 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5623a354-cd3c-4acb-821d-b010df74aec5/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 09:22:25,947 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5623a354-cd3c-4acb-821d-b010df74aec5/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-24 09:22:25,966 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5623a354-cd3c-4acb-821d-b010df74aec5/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-24 09:22:26,014 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-24 09:22:26,014 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-24 09:22:26,016 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-24 09:22:26,016 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-24 09:22:26,357 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-24 09:22:26,358 INFO L299 CfgBuilder]: Removed 19 assume(true) statements. [2021-10-24 09:22:26,360 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:22:26 BoogieIcfgContainer [2021-10-24 09:22:26,361 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-24 09:22:26,362 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-24 09:22:26,363 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-24 09:22:26,366 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-24 09:22:26,367 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 09:22:25" (1/3) ... [2021-10-24 09:22:26,367 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a8afea4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:22:26, skipping insertion in model container [2021-10-24 09:22:26,368 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:22:25" (2/3) ... [2021-10-24 09:22:26,368 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a8afea4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:22:26, skipping insertion in model container [2021-10-24 09:22:26,368 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:22:26" (3/3) ... [2021-10-24 09:22:26,370 INFO L111 eAbstractionObserver]: Analyzing ICFG freire2_valuebound5.c [2021-10-24 09:22:26,375 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-24 09:22:26,376 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-10-24 09:22:26,429 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-24 09:22:26,437 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-24 09:22:26,437 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-10-24 09:22:26,454 INFO L276 IsEmpty]: Start isEmpty. Operand has 28 states, 21 states have (on average 1.6666666666666667) internal successors, (35), 27 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:22:26,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-24 09:22:26,459 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 09:22:26,460 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-24 09:22:26,460 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-24 09:22:26,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 09:22:26,466 INFO L82 PathProgramCache]: Analyzing trace with hash 3980175, now seen corresponding path program 1 times [2021-10-24 09:22:26,481 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 09:22:26,482 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765997076] [2021-10-24 09:22:26,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:22:26,483 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 09:22:26,637 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-24 09:22:26,638 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [780640643] [2021-10-24 09:22:26,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:22:26,639 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 09:22:26,639 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5623a354-cd3c-4acb-821d-b010df74aec5/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 09:22:26,646 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5623a354-cd3c-4acb-821d-b010df74aec5/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-24 09:22:26,670 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5623a354-cd3c-4acb-821d-b010df74aec5/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-24 09:22:26,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-24 09:22:26,769 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-24 09:22:26,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-24 09:22:26,823 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-24 09:22:26,828 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-24 09:22:26,829 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-24 09:22:26,832 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-24 09:22:26,833 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-10-24 09:22:26,833 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION [2021-10-24 09:22:26,835 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION [2021-10-24 09:22:26,835 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION [2021-10-24 09:22:26,878 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5623a354-cd3c-4acb-821d-b010df74aec5/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-24 09:22:27,061 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5623a354-cd3c-4acb-821d-b010df74aec5/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 09:22:27,070 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-24 09:22:27,095 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 09:22:27 BoogieIcfgContainer [2021-10-24 09:22:27,095 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-24 09:22:27,098 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-24 09:22:27,099 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-24 09:22:27,099 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-24 09:22:27,100 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:22:26" (3/4) ... [2021-10-24 09:22:27,103 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-24 09:22:27,103 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-24 09:22:27,107 INFO L168 Benchmark]: Toolchain (without parser) took 1644.00 ms. Allocated memory is still 130.0 MB. Free memory was 95.9 MB in the beginning and 74.2 MB in the end (delta: 21.7 MB). Peak memory consumption was 20.1 MB. Max. memory is 16.1 GB. [2021-10-24 09:22:27,109 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 83.9 MB. Free memory was 54.7 MB in the beginning and 54.7 MB in the end (delta: 28.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 09:22:27,111 INFO L168 Benchmark]: CACSL2BoogieTranslator took 355.61 ms. Allocated memory is still 130.0 MB. Free memory was 95.6 MB in the beginning and 106.1 MB in the end (delta: -10.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-24 09:22:27,113 INFO L168 Benchmark]: Boogie Procedure Inliner took 39.79 ms. Allocated memory is still 130.0 MB. Free memory was 106.1 MB in the beginning and 104.5 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 09:22:27,115 INFO L168 Benchmark]: Boogie Preprocessor took 27.69 ms. Allocated memory is still 130.0 MB. Free memory was 104.5 MB in the beginning and 103.2 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-24 09:22:27,121 INFO L168 Benchmark]: RCFGBuilder took 469.33 ms. Allocated memory is still 130.0 MB. Free memory was 103.2 MB in the beginning and 90.2 MB in the end (delta: 12.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-24 09:22:27,122 INFO L168 Benchmark]: TraceAbstraction took 732.96 ms. Allocated memory is still 130.0 MB. Free memory was 89.8 MB in the beginning and 74.2 MB in the end (delta: 15.6 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2021-10-24 09:22:27,123 INFO L168 Benchmark]: Witness Printer took 5.91 ms. Allocated memory is still 130.0 MB. Free memory is still 74.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 09:22:27,131 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 83.9 MB. Free memory was 54.7 MB in the beginning and 54.7 MB in the end (delta: 28.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 355.61 ms. Allocated memory is still 130.0 MB. Free memory was 95.6 MB in the beginning and 106.1 MB in the end (delta: -10.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 39.79 ms. Allocated memory is still 130.0 MB. Free memory was 106.1 MB in the beginning and 104.5 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 27.69 ms. Allocated memory is still 130.0 MB. Free memory was 104.5 MB in the beginning and 103.2 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 469.33 ms. Allocated memory is still 130.0 MB. Free memory was 103.2 MB in the beginning and 90.2 MB in the end (delta: 12.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 732.96 ms. Allocated memory is still 130.0 MB. Free memory was 89.8 MB in the beginning and 74.2 MB in the end (delta: 15.6 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * Witness Printer took 5.91 ms. Allocated memory is still 130.0 MB. Free memory is still 74.2 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, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms 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 34, overapproximation of someBinaryDOUBLEComparisonOperation at line 28. Possible FailurePath: [L25] int r; [L26] double a, x, s; [L27] a = __VERIFIER_nondet_double() [L14] COND FALSE !(!cond) [L29] x = a [L30] s = 3.25 [L31] r = 1 [L33] COND TRUE 1 [L17] COND TRUE !(cond) [L19] reach_error() - 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. - 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. - 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. - 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. - 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, 28 locations, 6 error locations. Started 1 CEGAR loops. OverallTime: 640.7ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 9.1ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 12.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=28occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 8.4ms SsaConstructionTime, 41.7ms SatisfiabilityAnalysisTime, 0.0ms InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-10-24 09:22:27,189 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5623a354-cd3c-4acb-821d-b010df74aec5/bin/utaipan-9zjyvhn0QE/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-e943c26 [2021-10-24 09:22:29,855 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-24 09:22:29,859 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-24 09:22:29,909 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-24 09:22:29,909 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-24 09:22:29,915 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-24 09:22:29,917 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-24 09:22:29,927 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-24 09:22:29,931 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-24 09:22:29,943 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-24 09:22:29,944 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-24 09:22:29,946 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-24 09:22:29,946 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-24 09:22:29,947 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-24 09:22:29,949 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-24 09:22:29,951 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-24 09:22:29,952 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-24 09:22:29,953 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-24 09:22:29,955 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-24 09:22:29,958 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-24 09:22:29,960 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-24 09:22:29,963 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-24 09:22:29,964 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-24 09:22:29,965 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-24 09:22:29,969 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-24 09:22:29,970 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-24 09:22:29,970 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-24 09:22:29,972 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-24 09:22:29,972 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-24 09:22:29,973 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-24 09:22:29,974 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-24 09:22:29,975 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-24 09:22:29,976 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-24 09:22:29,981 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-24 09:22:29,984 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-24 09:22:29,984 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-24 09:22:29,985 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-24 09:22:29,986 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-24 09:22:29,986 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-24 09:22:29,988 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-24 09:22:29,989 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-24 09:22:29,990 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5623a354-cd3c-4acb-821d-b010df74aec5/bin/utaipan-9zjyvhn0QE/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-24 09:22:30,049 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-24 09:22:30,049 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-24 09:22:30,051 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-24 09:22:30,051 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-24 09:22:30,052 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-24 09:22:30,052 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-24 09:22:30,052 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-24 09:22:30,052 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-24 09:22:30,053 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-24 09:22:30,054 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-24 09:22:30,055 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-24 09:22:30,056 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-24 09:22:30,056 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-24 09:22:30,056 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-24 09:22:30,057 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-24 09:22:30,057 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-24 09:22:30,057 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-24 09:22:30,057 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-24 09:22:30,058 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-24 09:22:30,058 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-24 09:22:30,058 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-24 09:22:30,059 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-24 09:22:30,059 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-24 09:22:30,059 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-24 09:22:30,059 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-24 09:22:30,060 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-24 09:22:30,060 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 09:22:30,060 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-24 09:22:30,061 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-24 09:22:30,061 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-24 09:22:30,061 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-24 09:22:30,061 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-24 09:22:30,062 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-24 09:22:30,062 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-24 09:22:30,062 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-24 09:22:30,063 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_5623a354-cd3c-4acb-821d-b010df74aec5/bin/utaipan-9zjyvhn0QE/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5623a354-cd3c-4acb-821d-b010df74aec5/bin/utaipan-9zjyvhn0QE Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 644fedc149cdfea0c0b39babfd09647f4fb573c27a060d8d57a08553303664a9 [2021-10-24 09:22:30,500 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-24 09:22:30,536 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-24 09:22:30,539 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-24 09:22:30,540 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-24 09:22:30,541 INFO L275 PluginConnector]: CDTParser initialized [2021-10-24 09:22:30,544 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5623a354-cd3c-4acb-821d-b010df74aec5/bin/utaipan-9zjyvhn0QE/../../sv-benchmarks/c/nla-digbench-scaling/freire2_valuebound5.c [2021-10-24 09:22:30,629 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5623a354-cd3c-4acb-821d-b010df74aec5/bin/utaipan-9zjyvhn0QE/data/56f7e5c30/a809c482fd6341afb3dd7d0e276f6b03/FLAG872e5c6f9 [2021-10-24 09:22:31,183 INFO L306 CDTParser]: Found 1 translation units. [2021-10-24 09:22:31,183 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5623a354-cd3c-4acb-821d-b010df74aec5/sv-benchmarks/c/nla-digbench-scaling/freire2_valuebound5.c [2021-10-24 09:22:31,191 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5623a354-cd3c-4acb-821d-b010df74aec5/bin/utaipan-9zjyvhn0QE/data/56f7e5c30/a809c482fd6341afb3dd7d0e276f6b03/FLAG872e5c6f9 [2021-10-24 09:22:31,548 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5623a354-cd3c-4acb-821d-b010df74aec5/bin/utaipan-9zjyvhn0QE/data/56f7e5c30/a809c482fd6341afb3dd7d0e276f6b03 [2021-10-24 09:22:31,551 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-24 09:22:31,552 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-24 09:22:31,554 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-24 09:22:31,554 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-24 09:22:31,558 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-24 09:22:31,573 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:22:31" (1/1) ... [2021-10-24 09:22:31,575 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d4e36f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:22:31, skipping insertion in model container [2021-10-24 09:22:31,575 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:22:31" (1/1) ... [2021-10-24 09:22:31,588 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-24 09:22:31,605 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-24 09:22:31,752 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_5623a354-cd3c-4acb-821d-b010df74aec5/sv-benchmarks/c/nla-digbench-scaling/freire2_valuebound5.c[709,722] [2021-10-24 09:22:31,783 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 09:22:31,819 INFO L203 MainTranslator]: Completed pre-run [2021-10-24 09:22:31,838 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_5623a354-cd3c-4acb-821d-b010df74aec5/sv-benchmarks/c/nla-digbench-scaling/freire2_valuebound5.c[709,722] [2021-10-24 09:22:31,874 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 09:22:31,895 INFO L208 MainTranslator]: Completed translation [2021-10-24 09:22:31,896 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:22:31 WrapperNode [2021-10-24 09:22:31,896 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-24 09:22:31,897 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-24 09:22:31,897 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-24 09:22:31,898 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-24 09:22:31,905 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:22:31" (1/1) ... [2021-10-24 09:22:31,917 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:22:31" (1/1) ... [2021-10-24 09:22:31,948 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-24 09:22:31,949 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-24 09:22:31,950 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-24 09:22:31,950 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-24 09:22:31,959 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:22:31" (1/1) ... [2021-10-24 09:22:31,959 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:22:31" (1/1) ... [2021-10-24 09:22:31,969 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:22:31" (1/1) ... [2021-10-24 09:22:31,970 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:22:31" (1/1) ... [2021-10-24 09:22:31,997 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:22:31" (1/1) ... [2021-10-24 09:22:32,009 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:22:31" (1/1) ... [2021-10-24 09:22:32,011 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:22:31" (1/1) ... [2021-10-24 09:22:32,015 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-24 09:22:32,016 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-24 09:22:32,017 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-24 09:22:32,017 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-24 09:22:32,018 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:22:31" (1/1) ... [2021-10-24 09:22:32,026 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 09:22:32,039 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5623a354-cd3c-4acb-821d-b010df74aec5/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 09:22:32,052 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5623a354-cd3c-4acb-821d-b010df74aec5/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-24 09:22:32,073 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5623a354-cd3c-4acb-821d-b010df74aec5/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-24 09:22:32,107 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-24 09:22:32,107 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-24 09:22:32,108 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-24 09:22:32,108 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-24 09:22:43,818 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-24 09:22:43,818 INFO L299 CfgBuilder]: Removed 19 assume(true) statements. [2021-10-24 09:22:43,821 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:22:43 BoogieIcfgContainer [2021-10-24 09:22:43,821 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-24 09:22:43,823 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-24 09:22:43,823 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-24 09:22:43,827 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-24 09:22:43,828 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 09:22:31" (1/3) ... [2021-10-24 09:22:43,829 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6db89bf6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:22:43, skipping insertion in model container [2021-10-24 09:22:43,829 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:22:31" (2/3) ... [2021-10-24 09:22:43,829 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6db89bf6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:22:43, skipping insertion in model container [2021-10-24 09:22:43,830 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:22:43" (3/3) ... [2021-10-24 09:22:43,831 INFO L111 eAbstractionObserver]: Analyzing ICFG freire2_valuebound5.c [2021-10-24 09:22:43,838 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-24 09:22:43,838 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-10-24 09:22:43,898 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-24 09:22:43,906 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-24 09:22:43,906 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-10-24 09:22:43,922 INFO L276 IsEmpty]: Start isEmpty. Operand has 33 states, 26 states have (on average 1.6153846153846154) internal successors, (42), 32 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:22:43,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-24 09:22:43,928 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 09:22:43,928 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-24 09:22:43,929 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-24 09:22:43,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 09:22:43,936 INFO L82 PathProgramCache]: Analyzing trace with hash 1804972333, now seen corresponding path program 1 times [2021-10-24 09:22:43,969 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 09:22:43,970 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1783319222] [2021-10-24 09:22:43,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:22:43,972 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 09:22:43,972 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5623a354-cd3c-4acb-821d-b010df74aec5/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 09:22:43,979 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5623a354-cd3c-4acb-821d-b010df74aec5/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 09:22:44,005 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5623a354-cd3c-4acb-821d-b010df74aec5/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-24 09:22:44,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 09:22:44,218 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-24 09:22:44,223 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 09:22:44,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:22:44,293 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 09:22:44,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:22:44,344 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 09:22:44,345 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1783319222] [2021-10-24 09:22:44,345 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1783319222] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 09:22:44,346 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 09:22:44,346 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-24 09:22:44,348 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726319826] [2021-10-24 09:22:44,354 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-24 09:22:44,354 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 09:22:44,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-24 09:22:44,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-24 09:22:44,373 INFO L87 Difference]: Start difference. First operand has 33 states, 26 states have (on average 1.6153846153846154) internal successors, (42), 32 states have internal predecessors, (42), 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 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:22:44,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 09:22:44,391 INFO L93 Difference]: Finished difference Result 63 states and 80 transitions. [2021-10-24 09:22:44,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-24 09:22:44,393 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-10-24 09:22:44,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 09:22:44,402 INFO L225 Difference]: With dead ends: 63 [2021-10-24 09:22:44,402 INFO L226 Difference]: Without dead ends: 29 [2021-10-24 09:22:44,405 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-24 09:22:44,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-10-24 09:22:44,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2021-10-24 09:22:44,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 23 states have (on average 1.2608695652173914) internal successors, (29), 28 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:22:44,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 29 transitions. [2021-10-24 09:22:44,441 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 29 transitions. Word has length 7 [2021-10-24 09:22:44,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 09:22:44,441 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 29 transitions. [2021-10-24 09:22:44,442 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:22:44,442 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 29 transitions. [2021-10-24 09:22:44,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-24 09:22:44,443 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 09:22:44,443 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-24 09:22:44,465 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5623a354-cd3c-4acb-821d-b010df74aec5/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-24 09:22:44,661 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5623a354-cd3c-4acb-821d-b010df74aec5/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 09:22:44,661 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-24 09:22:44,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 09:22:44,662 INFO L82 PathProgramCache]: Analyzing trace with hash 1806819375, now seen corresponding path program 1 times [2021-10-24 09:22:44,663 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 09:22:44,663 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [996310639] [2021-10-24 09:22:44,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:22:44,664 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 09:22:44,665 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5623a354-cd3c-4acb-821d-b010df74aec5/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 09:22:44,666 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5623a354-cd3c-4acb-821d-b010df74aec5/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 09:22:44,697 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5623a354-cd3c-4acb-821d-b010df74aec5/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-24 09:22:44,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 09:22:44,861 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-24 09:22:44,862 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 09:22:45,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:22:45,243 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 09:22:52,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:22:52,807 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 09:22:52,807 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [996310639] [2021-10-24 09:22:52,807 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [996310639] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 09:22:52,808 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 09:22:52,808 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-10-24 09:22:52,808 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276251063] [2021-10-24 09:22:52,810 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-24 09:22:52,810 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 09:22:52,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-24 09:22:52,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-10-24 09:22:52,811 INFO L87 Difference]: Start difference. First operand 29 states and 29 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) [2021-10-24 09:23:24,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 09:23:24,223 INFO L93 Difference]: Finished difference Result 34 states and 34 transitions. [2021-10-24 09:23:24,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-24 09:23:24,225 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 7 [2021-10-24 09:23:24,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 09:23:24,226 INFO L225 Difference]: With dead ends: 34 [2021-10-24 09:23:24,226 INFO L226 Difference]: Without dead ends: 32 [2021-10-24 09:23:24,227 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 6185.8ms TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-10-24 09:23:24,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-10-24 09:23:24,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 31. [2021-10-24 09:23:24,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 25 states have (on average 1.24) internal successors, (31), 30 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:23:24,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 31 transitions. [2021-10-24 09:23:24,235 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 31 transitions. Word has length 7 [2021-10-24 09:23:24,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 09:23:24,235 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 31 transitions. [2021-10-24 09:23:24,235 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) [2021-10-24 09:23:24,236 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 31 transitions. [2021-10-24 09:23:24,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-24 09:23:24,236 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 09:23:24,236 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 09:23:24,261 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5623a354-cd3c-4acb-821d-b010df74aec5/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-24 09:23:24,437 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5623a354-cd3c-4acb-821d-b010df74aec5/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 09:23:24,438 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-24 09:23:24,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 09:23:24,439 INFO L82 PathProgramCache]: Analyzing trace with hash 1186787538, now seen corresponding path program 1 times [2021-10-24 09:23:24,440 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 09:23:24,440 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [103739109] [2021-10-24 09:23:24,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:23:24,441 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 09:23:24,441 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5623a354-cd3c-4acb-821d-b010df74aec5/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 09:23:24,443 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5623a354-cd3c-4acb-821d-b010df74aec5/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 09:23:24,446 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5623a354-cd3c-4acb-821d-b010df74aec5/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-24 09:23:25,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 09:23:25,155 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-24 09:23:25,157 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 09:23:27,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:23:27,535 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 09:23:35,771 WARN L860 $PredicateComparison]: unable to prove that (= (_ bv1 32) (bvadd (bvmul (_ bv4 32) (bvmul c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0)) (bvneg (bvmul (bvmul c_ULTIMATE.start_main_~r~0 (_ bv6 32)) c_ULTIMATE.start_main_~r~0)) ((_ fp.to_sbv 32) roundTowardZero (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv4 32)))) (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse0 c_ULTIMATE.start_main_~x~0) (fp.mul c_currentRoundingMode .cse0 c_ULTIMATE.start_main_~a~0)))) (bvmul (_ bv3 32) c_ULTIMATE.start_main_~r~0))) is different from true [2021-10-24 09:24:05,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:24:05,856 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 09:24:05,857 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [103739109] [2021-10-24 09:24:05,857 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [103739109] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 09:24:05,857 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 09:24:05,857 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 11 [2021-10-24 09:24:05,858 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059288628] [2021-10-24 09:24:05,858 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-24 09:24:05,858 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 09:24:05,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-24 09:24:05,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=63, Unknown=1, NotChecked=16, Total=110 [2021-10-24 09:24:05,860 INFO L87 Difference]: Start difference. First operand 31 states and 31 transitions. Second operand has 11 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 11 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) [2021-10-24 09:24:10,778 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 (fp.geq c_ULTIMATE.start_main_~a~0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))) (.cse1 (fp.leq c_ULTIMATE.start_main_~a~0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv5 32))))) (and (= c_ULTIMATE.start_main_~r~0 (_ bv1 32)) .cse0 (or (and (= c_ULTIMATE.start_assume_abort_if_not_~cond (_ bv0 32)) (or (not .cse1) (not .cse0))) (and .cse0 (= c_ULTIMATE.start_assume_abort_if_not_~cond (_ bv1 32)) .cse1)) (= c_ULTIMATE.start_main_~a~0 c_ULTIMATE.start_main_~x~0) .cse1 (= (_ bv1 32) (bvadd (bvmul (_ bv4 32) (bvmul c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0)) (bvneg (bvmul (bvmul c_ULTIMATE.start_main_~r~0 (_ bv6 32)) c_ULTIMATE.start_main_~r~0)) ((_ fp.to_sbv 32) roundTowardZero (let ((.cse2 ((_ to_fp 11 53) c_currentRoundingMode (_ bv4 32)))) (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse2 c_ULTIMATE.start_main_~x~0) (fp.mul c_currentRoundingMode .cse2 c_ULTIMATE.start_main_~a~0)))) (bvmul (_ bv3 32) c_ULTIMATE.start_main_~r~0))) (= c_currentRoundingMode roundNearestTiesToEven))) is different from true [2021-10-24 09:24:21,326 WARN L860 $PredicateComparison]: unable to prove that (and (= c_ULTIMATE.start_main_~r~0 (_ bv1 32)) (fp.geq c_ULTIMATE.start_main_~a~0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))) (not (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32))) (= c_ULTIMATE.start_main_~a~0 c_ULTIMATE.start_main_~x~0) (fp.leq c_ULTIMATE.start_main_~a~0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv5 32))) (= (_ bv1 32) (bvadd (bvmul (_ bv4 32) (bvmul c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0)) (bvneg (bvmul (bvmul c_ULTIMATE.start_main_~r~0 (_ bv6 32)) c_ULTIMATE.start_main_~r~0)) ((_ fp.to_sbv 32) roundTowardZero (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv4 32)))) (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse0 c_ULTIMATE.start_main_~x~0) (fp.mul c_currentRoundingMode .cse0 c_ULTIMATE.start_main_~a~0)))) (bvmul (_ bv3 32) c_ULTIMATE.start_main_~r~0))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2021-10-24 09:25:06,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 09:25:06,739 INFO L93 Difference]: Finished difference Result 36 states and 36 transitions. [2021-10-24 09:25:06,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-24 09:25:06,739 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 11 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) Word has length 9 [2021-10-24 09:25:06,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 09:25:06,740 INFO L225 Difference]: With dead ends: 36 [2021-10-24 09:25:06,740 INFO L226 Difference]: Without dead ends: 34 [2021-10-24 09:25:06,741 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 36381.9ms TimeCoverageRelationStatistics Valid=41, Invalid=78, Unknown=3, NotChecked=60, Total=182 [2021-10-24 09:25:06,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2021-10-24 09:25:06,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 33. [2021-10-24 09:25:06,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 27 states have (on average 1.2222222222222223) internal successors, (33), 32 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:25:06,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 33 transitions. [2021-10-24 09:25:06,750 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 33 transitions. Word has length 9 [2021-10-24 09:25:06,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 09:25:06,751 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 33 transitions. [2021-10-24 09:25:06,751 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 11 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) [2021-10-24 09:25:06,751 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 33 transitions. [2021-10-24 09:25:06,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-24 09:25:06,752 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 09:25:06,752 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 09:25:06,773 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5623a354-cd3c-4acb-821d-b010df74aec5/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-24 09:25:06,966 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5623a354-cd3c-4acb-821d-b010df74aec5/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 09:25:06,966 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-24 09:25:06,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 09:25:06,967 INFO L82 PathProgramCache]: Analyzing trace with hash -1958320619, now seen corresponding path program 1 times [2021-10-24 09:25:06,968 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 09:25:06,968 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [532482312] [2021-10-24 09:25:06,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:25:06,969 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 09:25:06,969 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5623a354-cd3c-4acb-821d-b010df74aec5/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 09:25:06,970 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5623a354-cd3c-4acb-821d-b010df74aec5/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 09:25:06,973 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5623a354-cd3c-4acb-821d-b010df74aec5/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-24 09:26:47,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-24 09:26:47,919 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-24 09:26:50,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-24 09:26:50,165 INFO L133 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2021-10-24 09:26:50,166 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-24 09:26:50,167 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-10-24 09:26:50,169 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-24 09:26:50,170 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-24 09:26:50,170 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION [2021-10-24 09:26:50,171 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION [2021-10-24 09:26:50,171 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION [2021-10-24 09:26:50,246 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5623a354-cd3c-4acb-821d-b010df74aec5/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-24 09:26:50,371 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5623a354-cd3c-4acb-821d-b010df74aec5/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 09:26:50,378 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-24 09:26:50,410 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 09:26:50 BoogieIcfgContainer [2021-10-24 09:26:50,410 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-24 09:26:50,411 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-24 09:26:50,411 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-24 09:26:50,412 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-24 09:26:50,412 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:22:43" (3/4) ... [2021-10-24 09:26:50,416 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-24 09:26:50,502 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5623a354-cd3c-4acb-821d-b010df74aec5/bin/utaipan-9zjyvhn0QE/witness.graphml [2021-10-24 09:26:50,503 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-24 09:26:50,505 INFO L168 Benchmark]: Toolchain (without parser) took 258952.04 ms. Allocated memory is still 69.2 MB. Free memory was 46.3 MB in the beginning and 44.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.8 MB. Max. memory is 16.1 GB. [2021-10-24 09:26:50,506 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 52.4 MB. Free memory is still 32.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 09:26:50,507 INFO L168 Benchmark]: CACSL2BoogieTranslator took 342.17 ms. Allocated memory is still 69.2 MB. Free memory was 46.1 MB in the beginning and 50.6 MB in the end (delta: -4.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-24 09:26:50,511 INFO L168 Benchmark]: Boogie Procedure Inliner took 51.34 ms. Allocated memory is still 69.2 MB. Free memory was 50.6 MB in the beginning and 48.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-24 09:26:50,512 INFO L168 Benchmark]: Boogie Preprocessor took 66.19 ms. Allocated memory is still 69.2 MB. Free memory was 48.7 MB in the beginning and 47.4 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 09:26:50,514 INFO L168 Benchmark]: RCFGBuilder took 11804.77 ms. Allocated memory is still 69.2 MB. Free memory was 47.4 MB in the beginning and 35.9 MB in the end (delta: 11.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-24 09:26:50,518 INFO L168 Benchmark]: TraceAbstraction took 246587.46 ms. Allocated memory is still 69.2 MB. Free memory was 35.4 MB in the beginning and 47.0 MB in the end (delta: -11.6 MB). Peak memory consumption was 11.2 MB. Max. memory is 16.1 GB. [2021-10-24 09:26:50,520 INFO L168 Benchmark]: Witness Printer took 92.46 ms. Allocated memory is still 69.2 MB. Free memory was 47.0 MB in the beginning and 44.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-24 09:26:50,523 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 52.4 MB. Free memory is still 32.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 342.17 ms. Allocated memory is still 69.2 MB. Free memory was 46.1 MB in the beginning and 50.6 MB in the end (delta: -4.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 51.34 ms. Allocated memory is still 69.2 MB. Free memory was 50.6 MB in the beginning and 48.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 66.19 ms. Allocated memory is still 69.2 MB. Free memory was 48.7 MB in the beginning and 47.4 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 11804.77 ms. Allocated memory is still 69.2 MB. Free memory was 47.4 MB in the beginning and 35.9 MB in the end (delta: 11.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 246587.46 ms. Allocated memory is still 69.2 MB. Free memory was 35.4 MB in the beginning and 47.0 MB in the end (delta: -11.6 MB). Peak memory consumption was 11.2 MB. Max. memory is 16.1 GB. * Witness Printer took 92.46 ms. Allocated memory is still 69.2 MB. Free memory was 47.0 MB in the beginning and 44.9 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, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms 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: [L25] int r; [L26] double a, x, s; [L27] a = __VERIFIER_nondet_double() [L14] COND FALSE !(!cond) [L29] x = a [L30] s = 3.25 [L31] r = 1 [L33] COND TRUE 1 [L17] COND FALSE !(!(cond)) [L17] COND FALSE !(!(cond)) [L17] COND TRUE !(cond) [L19] reach_error() - 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. - 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. - 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. - 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. - 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, 33 locations, 6 error locations. Started 1 CEGAR loops. OverallTime: 246480.6ms, OverallIterations: 4, TraceHistogramMax: 1, EmptinessCheckTime: 12.3ms, AutomataDifference: 92349.2ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 10.9ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 83 SDtfs, 20 SDslu, 111 SDs, 0 SdLazy, 76 SolverSat, 11 SolverUnsat, 30 SolverUnknown, 0 SolverNotchecked, 77448.2ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 45 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 42567.8ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=33occurred in iteration=0, InterpolantAutomatonStates: 18, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 36.0ms AutomataMinimizationTime, 3 MinimizatonAttempts, 2 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 44.5ms SsaConstructionTime, 101872.3ms SatisfiabilityAnalysisTime, 48819.7ms InterpolantComputationTime, 34 NumberOfCodeBlocks, 34 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 40 ConstructedInterpolants, 0 QuantifiedInterpolants, 327 SizeOfPredicates, 11 NumberOfNonLiveVariables, 102 ConjunctsInSsa, 16 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! [2021-10-24 09:26:50,680 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5623a354-cd3c-4acb-821d-b010df74aec5/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...