./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_unwindbound20.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_cf18d9c0-9281-4476-bf2c-768b92065b08/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_cf18d9c0-9281-4476-bf2c-768b92065b08/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_cf18d9c0-9281-4476-bf2c-768b92065b08/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_cf18d9c0-9281-4476-bf2c-768b92065b08/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_unwindbound20.c -s /tmp/vcloud-vcloud-master/worker/run_dir_cf18d9c0-9281-4476-bf2c-768b92065b08/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_cf18d9c0-9281-4476-bf2c-768b92065b08/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 93be47e769f402898feb9056306e89058f4f5d77 ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_cf18d9c0-9281-4476-bf2c-768b92065b08/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_cf18d9c0-9281-4476-bf2c-768b92065b08/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_cf18d9c0-9281-4476-bf2c-768b92065b08/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_cf18d9c0-9281-4476-bf2c-768b92065b08/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_unwindbound20.c -s /tmp/vcloud-vcloud-master/worker/run_dir_cf18d9c0-9281-4476-bf2c-768b92065b08/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_cf18d9c0-9281-4476-bf2c-768b92065b08/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 93be47e769f402898feb9056306e89058f4f5d77 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: UnsupportedOperationException: translation of (bvneg (_ BitVec 64) (_ BitVec 64)) not yet implemented, please contact Matthias --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2020-12-09 11:18:29,833 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 11:18:29,836 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 11:18:29,857 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 11:18:29,858 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 11:18:29,859 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 11:18:29,860 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 11:18:29,862 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 11:18:29,863 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 11:18:29,864 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 11:18:29,865 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 11:18:29,866 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 11:18:29,866 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 11:18:29,867 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 11:18:29,868 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 11:18:29,869 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 11:18:29,869 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 11:18:29,870 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 11:18:29,872 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 11:18:29,873 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 11:18:29,874 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 11:18:29,875 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 11:18:29,876 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 11:18:29,877 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 11:18:29,879 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 11:18:29,879 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 11:18:29,880 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 11:18:29,880 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 11:18:29,881 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 11:18:29,882 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 11:18:29,882 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 11:18:29,882 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 11:18:29,883 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 11:18:29,884 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 11:18:29,884 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 11:18:29,885 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 11:18:29,885 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 11:18:29,885 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 11:18:29,885 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 11:18:29,886 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 11:18:29,886 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 11:18:29,887 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_cf18d9c0-9281-4476-bf2c-768b92065b08/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-12-09 11:18:29,903 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 11:18:29,903 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 11:18:29,904 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 11:18:29,904 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 11:18:29,904 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 11:18:29,904 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 11:18:29,904 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 11:18:29,904 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 11:18:29,904 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 11:18:29,904 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 11:18:29,905 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 11:18:29,905 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 11:18:29,905 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 11:18:29,905 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 11:18:29,905 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 11:18:29,905 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 11:18:29,906 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 11:18:29,906 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 11:18:29,906 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 11:18:29,906 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 11:18:29,906 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 11:18:29,906 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 11:18:29,906 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 11:18:29,906 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 11:18:29,906 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 11:18:29,906 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 11:18:29,907 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 11:18:29,907 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 11:18:29,907 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 11:18:29,907 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 11:18:29,907 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 11:18:29,907 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 11:18:29,907 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 11:18:29,907 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 11:18:29,907 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 11:18:29,908 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 11:18:29,908 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 11:18:29,908 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 11:18:29,908 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 11:18:29,908 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_cf18d9c0-9281-4476-bf2c-768b92065b08/bin/utaipan/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_cf18d9c0-9281-4476-bf2c-768b92065b08/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 93be47e769f402898feb9056306e89058f4f5d77 [2020-12-09 11:18:30,078 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 11:18:30,098 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 11:18:30,100 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 11:18:30,101 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 11:18:30,102 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 11:18:30,102 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_cf18d9c0-9281-4476-bf2c-768b92065b08/bin/utaipan/../../sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_unwindbound20.c [2020-12-09 11:18:30,145 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_cf18d9c0-9281-4476-bf2c-768b92065b08/bin/utaipan/data/d0aeec255/3328277354e344cdb53cb94fdf693477/FLAG9d97999bf [2020-12-09 11:18:30,505 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 11:18:30,505 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_cf18d9c0-9281-4476-bf2c-768b92065b08/sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_unwindbound20.c [2020-12-09 11:18:30,509 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_cf18d9c0-9281-4476-bf2c-768b92065b08/bin/utaipan/data/d0aeec255/3328277354e344cdb53cb94fdf693477/FLAG9d97999bf [2020-12-09 11:18:30,519 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_cf18d9c0-9281-4476-bf2c-768b92065b08/bin/utaipan/data/d0aeec255/3328277354e344cdb53cb94fdf693477 [2020-12-09 11:18:30,521 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 11:18:30,522 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 11:18:30,523 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 11:18:30,523 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 11:18:30,525 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 11:18:30,526 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 11:18:30" (1/1) ... [2020-12-09 11:18:30,527 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ec35db3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:18:30, skipping insertion in model container [2020-12-09 11:18:30,527 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 11:18:30" (1/1) ... [2020-12-09 11:18:30,532 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 11:18:30,543 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 11:18:30,636 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_cf18d9c0-9281-4476-bf2c-768b92065b08/sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_unwindbound20.c[520,533] [2020-12-09 11:18:30,646 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 11:18:30,653 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 11:18:30,663 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_cf18d9c0-9281-4476-bf2c-768b92065b08/sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_unwindbound20.c[520,533] [2020-12-09 11:18:30,670 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 11:18:30,684 INFO L208 MainTranslator]: Completed translation [2020-12-09 11:18:30,684 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:18:30 WrapperNode [2020-12-09 11:18:30,684 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 11:18:30,685 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 11:18:30,686 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 11:18:30,686 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 11:18:30,692 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:18:30" (1/1) ... [2020-12-09 11:18:30,698 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:18:30" (1/1) ... [2020-12-09 11:18:30,716 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 11:18:30,717 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 11:18:30,717 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 11:18:30,717 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 11:18:30,725 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:18:30" (1/1) ... [2020-12-09 11:18:30,725 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:18:30" (1/1) ... [2020-12-09 11:18:30,726 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:18:30" (1/1) ... [2020-12-09 11:18:30,726 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:18:30" (1/1) ... [2020-12-09 11:18:30,729 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:18:30" (1/1) ... [2020-12-09 11:18:30,732 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:18:30" (1/1) ... [2020-12-09 11:18:30,733 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:18:30" (1/1) ... [2020-12-09 11:18:30,734 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 11:18:30,735 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 11:18:30,735 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 11:18:30,735 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 11:18:30,736 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:18:30" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cf18d9c0-9281-4476-bf2c-768b92065b08/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 11:18:30,803 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-09 11:18:30,804 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 11:18:30,804 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 11:18:30,804 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 11:18:30,968 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 11:18:30,968 INFO L299 CfgBuilder]: Removed 17 assume(true) statements. [2020-12-09 11:18:30,969 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 11:18:30 BoogieIcfgContainer [2020-12-09 11:18:30,970 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 11:18:30,971 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 11:18:30,971 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 11:18:30,973 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 11:18:30,973 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 11:18:30" (1/3) ... [2020-12-09 11:18:30,974 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e44a929 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 11:18:30, skipping insertion in model container [2020-12-09 11:18:30,974 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:18:30" (2/3) ... [2020-12-09 11:18:30,974 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e44a929 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 11:18:30, skipping insertion in model container [2020-12-09 11:18:30,974 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 11:18:30" (3/3) ... [2020-12-09 11:18:30,975 INFO L111 eAbstractionObserver]: Analyzing ICFG sqrt1-ll_unwindbound20.c [2020-12-09 11:18:30,986 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 11:18:30,988 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2020-12-09 11:18:30,997 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-12-09 11:18:31,016 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 11:18:31,016 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 11:18:31,016 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 11:18:31,016 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 11:18:31,017 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 11:18:31,017 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 11:18:31,017 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 11:18:31,017 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 11:18:31,027 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states. [2020-12-09 11:18:31,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-12-09 11:18:31,031 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 11:18:31,031 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-12-09 11:18:31,032 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 11:18:31,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 11:18:31,036 INFO L82 PathProgramCache]: Analyzing trace with hash 113318109, now seen corresponding path program 1 times [2020-12-09 11:18:31,043 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 11:18:31,043 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368818627] [2020-12-09 11:18:31,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 11:18:31,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 11:18:31,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 11:18:31,141 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368818627] [2020-12-09 11:18:31,141 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 11:18:31,141 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 11:18:31,142 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746507518] [2020-12-09 11:18:31,145 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-09 11:18:31,146 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 11:18:31,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-09 11:18:31,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-09 11:18:31,157 INFO L87 Difference]: Start difference. First operand 29 states. Second operand 2 states. [2020-12-09 11:18:31,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 11:18:31,170 INFO L93 Difference]: Finished difference Result 57 states and 73 transitions. [2020-12-09 11:18:31,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-09 11:18:31,171 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 5 [2020-12-09 11:18:31,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 11:18:31,177 INFO L225 Difference]: With dead ends: 57 [2020-12-09 11:18:31,178 INFO L226 Difference]: Without dead ends: 27 [2020-12-09 11:18:31,180 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-09 11:18:31,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-12-09 11:18:31,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2020-12-09 11:18:31,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-12-09 11:18:31,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2020-12-09 11:18:31,203 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 5 [2020-12-09 11:18:31,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 11:18:31,203 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2020-12-09 11:18:31,203 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-09 11:18:31,203 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2020-12-09 11:18:31,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-12-09 11:18:31,204 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 11:18:31,204 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-12-09 11:18:31,204 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-09 11:18:31,204 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 11:18:31,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 11:18:31,205 INFO L82 PathProgramCache]: Analyzing trace with hash 111966592, now seen corresponding path program 1 times [2020-12-09 11:18:31,205 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 11:18:31,205 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236510874] [2020-12-09 11:18:31,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 11:18:31,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 11:18:31,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 11:18:31,283 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236510874] [2020-12-09 11:18:31,283 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 11:18:31,283 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 11:18:31,283 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726338464] [2020-12-09 11:18:31,284 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 11:18:31,285 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 11:18:31,286 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 11:18:31,286 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 11:18:31,286 INFO L87 Difference]: Start difference. First operand 27 states and 28 transitions. Second operand 4 states. [2020-12-09 11:18:31,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 11:18:31,367 INFO L93 Difference]: Finished difference Result 30 states and 32 transitions. [2020-12-09 11:18:31,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 11:18:31,367 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 5 [2020-12-09 11:18:31,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 11:18:31,368 INFO L225 Difference]: With dead ends: 30 [2020-12-09 11:18:31,368 INFO L226 Difference]: Without dead ends: 26 [2020-12-09 11:18:31,369 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-09 11:18:31,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-12-09 11:18:31,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 23. [2020-12-09 11:18:31,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-12-09 11:18:31,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2020-12-09 11:18:31,374 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 5 [2020-12-09 11:18:31,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 11:18:31,374 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2020-12-09 11:18:31,374 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 11:18:31,375 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2020-12-09 11:18:31,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-09 11:18:31,375 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 11:18:31,375 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-09 11:18:31,375 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-09 11:18:31,376 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 11:18:31,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 11:18:31,376 INFO L82 PathProgramCache]: Analyzing trace with hash 225868067, now seen corresponding path program 1 times [2020-12-09 11:18:31,377 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 11:18:31,377 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109943380] [2020-12-09 11:18:31,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 11:18:31,391 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-09 11:18:31,392 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1714802409] [2020-12-09 11:18:31,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cf18d9c0-9281-4476-bf2c-768b92065b08/bin/utaipan/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 11:18:31,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 11:18:31,423 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 17 conjunts are in the unsatisfiable core [2020-12-09 11:18:31,426 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 11:18:31,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 11:18:31,482 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 11:18:31,548 INFO L398 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-12-09 11:18:31,548 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-12-09 11:18:31,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 11:18:31,566 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109943380] [2020-12-09 11:18:31,566 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 11:18:31,566 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1714802409] [2020-12-09 11:18:31,566 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-09 11:18:31,566 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2020-12-09 11:18:31,567 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312678957] [2020-12-09 11:18:31,567 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-09 11:18:31,567 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 11:18:31,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-09 11:18:31,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-12-09 11:18:31,568 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand 10 states. [2020-12-09 11:18:33,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 11:18:33,706 INFO L93 Difference]: Finished difference Result 58 states and 63 transitions. [2020-12-09 11:18:33,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-09 11:18:33,707 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 7 [2020-12-09 11:18:33,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 11:18:33,707 INFO L225 Difference]: With dead ends: 58 [2020-12-09 11:18:33,707 INFO L226 Difference]: Without dead ends: 43 [2020-12-09 11:18:33,708 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=61, Invalid=95, Unknown=0, NotChecked=0, Total=156 [2020-12-09 11:18:33,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-12-09 11:18:33,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 40. [2020-12-09 11:18:33,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-12-09 11:18:33,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 42 transitions. [2020-12-09 11:18:33,715 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 42 transitions. Word has length 7 [2020-12-09 11:18:33,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 11:18:33,715 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 42 transitions. [2020-12-09 11:18:33,715 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-09 11:18:33,715 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 42 transitions. [2020-12-09 11:18:33,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-09 11:18:33,716 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 11:18:33,716 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2020-12-09 11:18:33,916 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-12-09 11:18:33,918 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 11:18:33,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 11:18:33,920 INFO L82 PathProgramCache]: Analyzing trace with hash 874023160, now seen corresponding path program 1 times [2020-12-09 11:18:33,921 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 11:18:33,922 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769627476] [2020-12-09 11:18:33,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 11:18:33,955 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-09 11:18:33,956 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [258845663] [2020-12-09 11:18:33,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cf18d9c0-9281-4476-bf2c-768b92065b08/bin/utaipan/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 11:18:34,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 11:18:34,004 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 23 conjunts are in the unsatisfiable core [2020-12-09 11:18:34,006 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 11:18:34,063 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 11:18:34,063 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 11:18:34,110 INFO L398 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-12-09 11:18:34,111 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-12-09 11:18:42,159 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 2 refuted. 5 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 11:18:42,160 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769627476] [2020-12-09 11:18:42,160 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 11:18:42,160 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [258845663] [2020-12-09 11:18:42,160 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1936615428] [2020-12-09 11:18:42,175 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2020-12-09 11:18:42,175 INFO L166 IcfgInterpreter]: Building call graph [2020-12-09 11:18:42,178 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-09 11:18:42,182 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-09 11:18:42,182 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-09 11:18:42,812 INFO L180 IcfgInterpreter]: Interpretation finished [2020-12-09 11:18:43,351 WARN L197 SmtUtils]: Spent 374.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 94 [2020-12-09 11:18:43,836 WARN L197 SmtUtils]: Spent 427.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 87 [2020-12-09 11:18:44,212 WARN L197 SmtUtils]: Spent 301.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 105 [2020-12-09 11:18:44,561 WARN L197 SmtUtils]: Spent 292.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 101 [2020-12-09 11:18:44,945 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 11:18:44,946 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-09 11:18:44,946 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-12-09 11:18:44,946 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317628059] [2020-12-09 11:18:44,946 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-09 11:18:44,946 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 11:18:44,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-09 11:18:44,947 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=338, Unknown=3, NotChecked=0, Total=420 [2020-12-09 11:18:44,947 INFO L87 Difference]: Start difference. First operand 40 states and 42 transitions. Second operand 12 states. [2020-12-09 11:18:54,110 WARN L197 SmtUtils]: Spent 9.01 s on a formula simplification that was a NOOP. DAG size: 25 [2020-12-09 11:19:00,168 WARN L197 SmtUtils]: Spent 6.02 s on a formula simplification that was a NOOP. DAG size: 23 [2020-12-09 11:19:06,259 WARN L197 SmtUtils]: Spent 6.03 s on a formula simplification that was a NOOP. DAG size: 27 [2020-12-09 11:19:31,078 WARN L197 SmtUtils]: Spent 2.18 s on a formula simplification that was a NOOP. DAG size: 21 [2020-12-09 11:21:31,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 11:21:31,332 INFO L93 Difference]: Finished difference Result 97 states and 106 transitions. [2020-12-09 11:21:31,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-12-09 11:21:31,333 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 17 [2020-12-09 11:21:31,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 11:21:31,334 INFO L225 Difference]: With dead ends: 97 [2020-12-09 11:21:31,334 INFO L226 Difference]: Without dead ends: 74 [2020-12-09 11:21:31,335 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 62.8s TimeCoverageRelationStatistics Valid=184, Invalid=674, Unknown=12, NotChecked=0, Total=870 [2020-12-09 11:21:31,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-12-09 11:21:31,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 58. [2020-12-09 11:21:31,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-12-09 11:21:31,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 62 transitions. [2020-12-09 11:21:31,342 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 62 transitions. Word has length 17 [2020-12-09 11:21:31,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 11:21:31,342 INFO L481 AbstractCegarLoop]: Abstraction has 58 states and 62 transitions. [2020-12-09 11:21:31,342 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-12-09 11:21:31,342 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 62 transitions. [2020-12-09 11:21:31,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-12-09 11:21:31,343 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 11:21:31,343 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1] [2020-12-09 11:21:31,544 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 11:21:31,545 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 11:21:31,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 11:21:31,547 INFO L82 PathProgramCache]: Analyzing trace with hash 1973720903, now seen corresponding path program 1 times [2020-12-09 11:21:31,547 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 11:21:31,548 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634425379] [2020-12-09 11:21:31,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 11:21:31,577 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-09 11:21:31,578 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [984823031] [2020-12-09 11:21:31,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cf18d9c0-9281-4476-bf2c-768b92065b08/bin/utaipan/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 11:21:31,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 11:21:31,622 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 29 conjunts are in the unsatisfiable core [2020-12-09 11:21:31,623 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 11:21:31,691 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 11:21:31,691 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 11:21:31,791 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 11 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-09 11:21:31,791 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634425379] [2020-12-09 11:21:31,791 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 11:21:31,791 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [984823031] [2020-12-09 11:21:31,792 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1680167254] [2020-12-09 11:21:31,793 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2020-12-09 11:21:31,793 INFO L166 IcfgInterpreter]: Building call graph [2020-12-09 11:21:31,794 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-09 11:21:31,794 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-09 11:21:31,794 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-09 11:21:32,177 INFO L180 IcfgInterpreter]: Interpretation finished [2020-12-09 11:21:32,630 WARN L197 SmtUtils]: Spent 317.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 94 [2020-12-09 11:21:33,084 WARN L197 SmtUtils]: Spent 395.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 87 [2020-12-09 11:21:33,475 WARN L197 SmtUtils]: Spent 333.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 95 [2020-12-09 11:21:33,855 WARN L197 SmtUtils]: Spent 317.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 89 [2020-12-09 11:21:34,284 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 11:21:34,284 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-09 11:21:34,284 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-12-09 11:21:34,284 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964001497] [2020-12-09 11:21:34,285 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-09 11:21:34,285 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 11:21:34,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-09 11:21:34,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=345, Unknown=0, NotChecked=0, Total=420 [2020-12-09 11:21:34,286 INFO L87 Difference]: Start difference. First operand 58 states and 62 transitions. Second operand 12 states. [2020-12-09 11:21:42,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 11:21:42,611 INFO L93 Difference]: Finished difference Result 62 states and 66 transitions. [2020-12-09 11:21:42,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-12-09 11:21:42,612 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 23 [2020-12-09 11:21:42,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 11:21:42,613 INFO L225 Difference]: With dead ends: 62 [2020-12-09 11:21:42,613 INFO L226 Difference]: Without dead ends: 50 [2020-12-09 11:21:42,613 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 47 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 164 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=151, Invalid=605, Unknown=0, NotChecked=0, Total=756 [2020-12-09 11:21:42,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-12-09 11:21:42,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2020-12-09 11:21:42,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-12-09 11:21:42,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 50 transitions. [2020-12-09 11:21:42,619 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 50 transitions. Word has length 23 [2020-12-09 11:21:42,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 11:21:42,619 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 50 transitions. [2020-12-09 11:21:42,619 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-12-09 11:21:42,619 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 50 transitions. [2020-12-09 11:21:42,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-12-09 11:21:42,620 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 11:21:42,620 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 1, 1, 1] [2020-12-09 11:21:42,821 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable54 [2020-12-09 11:21:42,822 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 11:21:42,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 11:21:42,823 INFO L82 PathProgramCache]: Analyzing trace with hash 2062983086, now seen corresponding path program 2 times [2020-12-09 11:21:42,823 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 11:21:42,824 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772517280] [2020-12-09 11:21:42,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 11:21:42,847 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-09 11:21:42,848 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [276406880] [2020-12-09 11:21:42,848 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cf18d9c0-9281-4476-bf2c-768b92065b08/bin/utaipan/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 11:21:42,899 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2020-12-09 11:21:42,899 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-09 11:21:42,900 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 16 conjunts are in the unsatisfiable core [2020-12-09 11:21:42,901 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 11:21:42,995 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2020-12-09 11:21:42,995 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 11:21:55,199 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772517280] [2020-12-09 11:21:55,199 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 11:21:55,199 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [276406880] [2020-12-09 11:21:55,199 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: null [2020-12-09 11:21:55,200 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1934070044] [2020-12-09 11:21:55,201 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2020-12-09 11:21:55,201 INFO L166 IcfgInterpreter]: Building call graph [2020-12-09 11:21:55,201 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-09 11:21:55,201 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-09 11:21:55,201 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-09 11:21:55,510 INFO L180 IcfgInterpreter]: Interpretation finished [2020-12-09 11:21:56,126 WARN L197 SmtUtils]: Spent 325.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 94 [2020-12-09 11:21:56,640 WARN L197 SmtUtils]: Spent 453.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 87 [2020-12-09 11:21:57,173 WARN L197 SmtUtils]: Spent 459.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 92 [2020-12-09 11:21:57,653 WARN L197 SmtUtils]: Spent 403.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 86 [2020-12-09 11:21:58,331 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 11:21:58,331 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2020-12-09 11:21:58,331 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2020-12-09 11:21:58,331 ERROR L205 FreeRefinementEngine]: Strategy SIFA_TAIPAN failed to provide any proof altough trace is infeasible [2020-12-09 11:21:58,331 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-09 11:21:58,534 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 11:21:58,575 WARN L254 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-12-09 11:21:58,576 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 11:21:58 BoogieIcfgContainer [2020-12-09 11:21:58,576 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 11:21:58,577 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 11:21:58,577 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 11:21:58,577 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 11:21:58,578 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 11:18:30" (3/4) ... [2020-12-09 11:21:58,581 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-09 11:21:58,581 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 11:21:58,583 INFO L168 Benchmark]: Toolchain (without parser) took 208060.07 ms. Allocated memory was 92.3 MB in the beginning and 127.9 MB in the end (delta: 35.7 MB). Free memory was 61.8 MB in the beginning and 94.4 MB in the end (delta: -32.6 MB). Peak memory consumption was 4.6 MB. Max. memory is 16.1 GB. [2020-12-09 11:21:58,583 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 92.3 MB. Free memory is still 69.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 11:21:58,584 INFO L168 Benchmark]: CACSL2BoogieTranslator took 161.69 ms. Allocated memory is still 92.3 MB. Free memory was 61.6 MB in the beginning and 51.8 MB in the end (delta: 9.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-12-09 11:21:58,584 INFO L168 Benchmark]: Boogie Procedure Inliner took 30.92 ms. Allocated memory is still 92.3 MB. Free memory was 51.7 MB in the beginning and 50.2 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 11:21:58,585 INFO L168 Benchmark]: Boogie Preprocessor took 17.26 ms. Allocated memory is still 92.3 MB. Free memory was 50.2 MB in the beginning and 49.1 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 11:21:58,586 INFO L168 Benchmark]: RCFGBuilder took 235.04 ms. Allocated memory is still 92.3 MB. Free memory was 49.0 MB in the beginning and 55.5 MB in the end (delta: -6.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-12-09 11:21:58,586 INFO L168 Benchmark]: TraceAbstraction took 207605.33 ms. Allocated memory was 92.3 MB in the beginning and 127.9 MB in the end (delta: 35.7 MB). Free memory was 55.1 MB in the beginning and 94.4 MB in the end (delta: -39.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 11:21:58,587 INFO L168 Benchmark]: Witness Printer took 4.86 ms. Allocated memory is still 127.9 MB. Free memory is still 94.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 11:21:58,590 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 92.3 MB. Free memory is still 69.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 161.69 ms. Allocated memory is still 92.3 MB. Free memory was 61.6 MB in the beginning and 51.8 MB in the end (delta: 9.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 30.92 ms. Allocated memory is still 92.3 MB. Free memory was 51.7 MB in the beginning and 50.2 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 17.26 ms. Allocated memory is still 92.3 MB. Free memory was 50.2 MB in the beginning and 49.1 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 235.04 ms. Allocated memory is still 92.3 MB. Free memory was 49.0 MB in the beginning and 55.5 MB in the end (delta: -6.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 207605.33 ms. Allocated memory was 92.3 MB in the beginning and 127.9 MB in the end (delta: 35.7 MB). Free memory was 55.1 MB in the beginning and 94.4 MB in the end (delta: -39.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 4.86 ms. Allocated memory is still 127.9 MB. Free memory is still 94.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 14]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L20] int counter = 0; [L22] int n; [L23] long long a, s, t; [L24] n = __VERIFIER_nondet_int() [L26] a = 0 [L27] s = 1 [L28] t = 1 [L30] EXPR counter++ [L30] COND TRUE counter++<20 [L12] COND FALSE !(!(cond)) [L12] COND FALSE !(!(cond)) [L12] COND FALSE !(!(cond)) [L36] COND FALSE !(!(s <= n)) [L39] a = a + 1 [L40] t = t + 2 [L41] s = s + t [L30] EXPR counter++ [L30] COND TRUE counter++<20 [L12] COND FALSE !(!(cond)) [L12] COND FALSE !(!(cond)) [L12] COND FALSE !(!(cond)) [L36] COND FALSE !(!(s <= n)) [L39] a = a + 1 [L40] t = t + 2 [L41] s = s + t [L30] EXPR counter++ [L30] COND TRUE counter++<20 [L12] COND FALSE !(!(cond)) [L12] COND FALSE !(!(cond)) [L12] COND FALSE !(!(cond)) [L36] COND FALSE !(!(s <= n)) [L39] a = a + 1 [L40] t = t + 2 [L41] s = s + t [L30] EXPR counter++ [L30] COND TRUE counter++<20 [L12] COND FALSE !(!(cond)) [L12] COND FALSE !(!(cond)) [L12] COND FALSE !(!(cond)) [L36] COND FALSE !(!(s <= n)) [L39] a = a + 1 [L40] t = t + 2 [L41] s = s + t [L30] EXPR counter++ [L30] COND TRUE counter++<20 [L12] COND FALSE !(!(cond)) [L12] COND FALSE !(!(cond)) [L12] COND TRUE !(cond) [L14] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 29 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: UNKNOWN, OverallTime: 207.5s, OverallIterations: 6, TraceHistogramMax: 5, AutomataDifference: 176.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 77 SDtfs, 320 SDslu, 136 SDs, 0 SdLazy, 313 SolverSat, 260 SolverUnsat, 41 SolverUnknown, 0 SolverNotchecked, 123.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 153 GetRequests, 84 SyntacticMatches, 1 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 336 ImplicationChecksByTransitivity, 65.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=58occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 22 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 8.5s InterpolantComputationTime, 57 NumberOfCodeBlocks, 57 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 96 ConstructedInterpolants, 0 QuantifiedInterpolants, 19544 SizeOfPredicates, 18 NumberOfNonLiveVariables, 260 ConjunctsInSsa, 69 ConjunctsInUnsatCore, 8 InterpolantComputations, 4 PerfectInterpolantSequences, 13/50 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.0-7b2dab5 [2020-12-09 11:22:00,069 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 11:22:00,071 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 11:22:00,100 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 11:22:00,100 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 11:22:00,102 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 11:22:00,103 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 11:22:00,106 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 11:22:00,108 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 11:22:00,109 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 11:22:00,110 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 11:22:00,119 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 11:22:00,120 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 11:22:00,121 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 11:22:00,122 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 11:22:00,123 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 11:22:00,124 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 11:22:00,125 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 11:22:00,127 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 11:22:00,130 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 11:22:00,132 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 11:22:00,133 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 11:22:00,135 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 11:22:00,136 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 11:22:00,139 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 11:22:00,139 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 11:22:00,140 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 11:22:00,141 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 11:22:00,141 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 11:22:00,142 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 11:22:00,143 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 11:22:00,143 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 11:22:00,144 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 11:22:00,145 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 11:22:00,146 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 11:22:00,146 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 11:22:00,147 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 11:22:00,147 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 11:22:00,147 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 11:22:00,148 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 11:22:00,149 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 11:22:00,150 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_cf18d9c0-9281-4476-bf2c-768b92065b08/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2020-12-09 11:22:00,173 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 11:22:00,173 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 11:22:00,174 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 11:22:00,174 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 11:22:00,174 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 11:22:00,175 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 11:22:00,175 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 11:22:00,175 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 11:22:00,175 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 11:22:00,176 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 11:22:00,176 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 11:22:00,176 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 11:22:00,176 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 11:22:00,177 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 11:22:00,177 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 11:22:00,177 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 11:22:00,177 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 11:22:00,177 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-12-09 11:22:00,177 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-12-09 11:22:00,178 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 11:22:00,178 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 11:22:00,178 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 11:22:00,178 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 11:22:00,178 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 11:22:00,179 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-09 11:22:00,179 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 11:22:00,179 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 11:22:00,179 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 11:22:00,179 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 11:22:00,179 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 11:22:00,180 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2020-12-09 11:22:00,180 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2020-12-09 11:22:00,180 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 11:22:00,180 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 11:22:00,180 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 11:22:00,181 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_cf18d9c0-9281-4476-bf2c-768b92065b08/bin/utaipan/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_cf18d9c0-9281-4476-bf2c-768b92065b08/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 93be47e769f402898feb9056306e89058f4f5d77 [2020-12-09 11:22:00,415 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 11:22:00,430 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 11:22:00,432 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 11:22:00,433 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 11:22:00,433 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 11:22:00,434 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_cf18d9c0-9281-4476-bf2c-768b92065b08/bin/utaipan/../../sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_unwindbound20.c [2020-12-09 11:22:00,476 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_cf18d9c0-9281-4476-bf2c-768b92065b08/bin/utaipan/data/00b43d733/95aaa9f48f124d0293f1ada7e99e4897/FLAGb7be646ab [2020-12-09 11:22:00,889 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 11:22:00,890 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_cf18d9c0-9281-4476-bf2c-768b92065b08/sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_unwindbound20.c [2020-12-09 11:22:00,896 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_cf18d9c0-9281-4476-bf2c-768b92065b08/bin/utaipan/data/00b43d733/95aaa9f48f124d0293f1ada7e99e4897/FLAGb7be646ab [2020-12-09 11:22:00,909 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_cf18d9c0-9281-4476-bf2c-768b92065b08/bin/utaipan/data/00b43d733/95aaa9f48f124d0293f1ada7e99e4897 [2020-12-09 11:22:00,911 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 11:22:00,913 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 11:22:00,914 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 11:22:00,914 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 11:22:00,917 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 11:22:00,918 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 11:22:00" (1/1) ... [2020-12-09 11:22:00,920 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51455f50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:22:00, skipping insertion in model container [2020-12-09 11:22:00,920 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 11:22:00" (1/1) ... [2020-12-09 11:22:00,927 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 11:22:00,940 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 11:22:01,042 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_cf18d9c0-9281-4476-bf2c-768b92065b08/sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_unwindbound20.c[520,533] [2020-12-09 11:22:01,058 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 11:22:01,069 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 11:22:01,086 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_cf18d9c0-9281-4476-bf2c-768b92065b08/sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_unwindbound20.c[520,533] [2020-12-09 11:22:01,097 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 11:22:01,111 INFO L208 MainTranslator]: Completed translation [2020-12-09 11:22:01,111 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:22:01 WrapperNode [2020-12-09 11:22:01,111 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 11:22:01,113 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 11:22:01,113 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 11:22:01,113 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 11:22:01,120 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:22:01" (1/1) ... [2020-12-09 11:22:01,128 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:22:01" (1/1) ... [2020-12-09 11:22:01,147 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 11:22:01,148 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 11:22:01,148 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 11:22:01,148 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 11:22:01,154 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:22:01" (1/1) ... [2020-12-09 11:22:01,154 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:22:01" (1/1) ... [2020-12-09 11:22:01,156 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:22:01" (1/1) ... [2020-12-09 11:22:01,156 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:22:01" (1/1) ... [2020-12-09 11:22:01,160 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:22:01" (1/1) ... [2020-12-09 11:22:01,163 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:22:01" (1/1) ... [2020-12-09 11:22:01,165 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:22:01" (1/1) ... [2020-12-09 11:22:01,167 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 11:22:01,167 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 11:22:01,168 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 11:22:01,168 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 11:22:01,168 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:22:01" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cf18d9c0-9281-4476-bf2c-768b92065b08/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 11:22:01,224 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-12-09 11:22:01,224 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 11:22:01,224 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 11:22:01,224 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 11:22:01,664 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 11:22:01,665 INFO L299 CfgBuilder]: Removed 17 assume(true) statements. [2020-12-09 11:22:01,666 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 11:22:01 BoogieIcfgContainer [2020-12-09 11:22:01,666 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 11:22:01,667 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 11:22:01,667 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 11:22:01,669 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 11:22:01,669 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 11:22:00" (1/3) ... [2020-12-09 11:22:01,670 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b20ce9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 11:22:01, skipping insertion in model container [2020-12-09 11:22:01,670 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 11:22:01" (2/3) ... [2020-12-09 11:22:01,670 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b20ce9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 11:22:01, skipping insertion in model container [2020-12-09 11:22:01,671 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 11:22:01" (3/3) ... [2020-12-09 11:22:01,672 INFO L111 eAbstractionObserver]: Analyzing ICFG sqrt1-ll_unwindbound20.c [2020-12-09 11:22:01,681 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 11:22:01,683 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2020-12-09 11:22:01,690 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-12-09 11:22:01,707 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 11:22:01,707 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 11:22:01,707 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 11:22:01,707 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 11:22:01,707 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 11:22:01,707 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 11:22:01,708 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 11:22:01,708 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 11:22:01,717 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2020-12-09 11:22:01,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-09 11:22:01,720 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 11:22:01,720 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-12-09 11:22:01,720 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 11:22:01,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 11:22:01,724 INFO L82 PathProgramCache]: Analyzing trace with hash 890922791, now seen corresponding path program 1 times [2020-12-09 11:22:01,732 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 11:22:01,732 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1975885460] [2020-12-09 11:22:01,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cf18d9c0-9281-4476-bf2c-768b92065b08/bin/utaipan/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-12-09 11:22:01,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 11:22:01,775 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 1 conjunts are in the unsatisfiable core [2020-12-09 11:22:01,778 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 11:22:01,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 11:22:01,793 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 11:22:01,793 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1975885460] [2020-12-09 11:22:01,794 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 11:22:01,794 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 11:22:01,794 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018071528] [2020-12-09 11:22:01,797 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-09 11:22:01,797 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 11:22:01,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-09 11:22:01,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-09 11:22:01,808 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 2 states. [2020-12-09 11:22:01,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 11:22:01,820 INFO L93 Difference]: Finished difference Result 62 states and 78 transitions. [2020-12-09 11:22:01,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-09 11:22:01,821 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 6 [2020-12-09 11:22:01,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 11:22:01,826 INFO L225 Difference]: With dead ends: 62 [2020-12-09 11:22:01,826 INFO L226 Difference]: Without dead ends: 28 [2020-12-09 11:22:01,828 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-09 11:22:01,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-12-09 11:22:01,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-12-09 11:22:01,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-12-09 11:22:01,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 29 transitions. [2020-12-09 11:22:01,851 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 29 transitions. Word has length 6 [2020-12-09 11:22:01,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 11:22:01,851 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 29 transitions. [2020-12-09 11:22:01,851 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-09 11:22:01,851 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 29 transitions. [2020-12-09 11:22:01,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-09 11:22:01,852 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 11:22:01,852 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-12-09 11:22:02,052 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-12-09 11:22:02,052 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 11:22:02,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 11:22:02,053 INFO L82 PathProgramCache]: Analyzing trace with hash 889571274, now seen corresponding path program 1 times [2020-12-09 11:22:02,054 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 11:22:02,054 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [671614035] [2020-12-09 11:22:02,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cf18d9c0-9281-4476-bf2c-768b92065b08/bin/utaipan/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-12-09 11:22:02,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 11:22:02,083 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-09 11:22:02,084 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 11:22:02,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 11:22:02,133 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 11:22:02,134 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [671614035] [2020-12-09 11:22:02,134 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 11:22:02,134 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 11:22:02,134 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698829883] [2020-12-09 11:22:02,135 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 11:22:02,135 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 11:22:02,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 11:22:02,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 11:22:02,136 INFO L87 Difference]: Start difference. First operand 28 states and 29 transitions. Second operand 4 states. [2020-12-09 11:22:02,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 11:22:02,594 INFO L93 Difference]: Finished difference Result 54 states and 56 transitions. [2020-12-09 11:22:02,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 11:22:02,601 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2020-12-09 11:22:02,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 11:22:02,601 INFO L225 Difference]: With dead ends: 54 [2020-12-09 11:22:02,602 INFO L226 Difference]: Without dead ends: 50 [2020-12-09 11:22:02,602 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-09 11:22:02,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-12-09 11:22:02,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 38. [2020-12-09 11:22:02,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-12-09 11:22:02,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 43 transitions. [2020-12-09 11:22:02,608 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 43 transitions. Word has length 6 [2020-12-09 11:22:02,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 11:22:02,608 INFO L481 AbstractCegarLoop]: Abstraction has 38 states and 43 transitions. [2020-12-09 11:22:02,608 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 11:22:02,608 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 43 transitions. [2020-12-09 11:22:02,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-09 11:22:02,608 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 11:22:02,608 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 11:22:02,809 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-12-09 11:22:02,810 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 11:22:02,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 11:22:02,812 INFO L82 PathProgramCache]: Analyzing trace with hash 179657965, now seen corresponding path program 1 times [2020-12-09 11:22:02,814 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 11:22:02,815 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [250759134] [2020-12-09 11:22:02,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cf18d9c0-9281-4476-bf2c-768b92065b08/bin/utaipan/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2020-12-09 11:22:02,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 11:22:02,881 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-09 11:22:02,881 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 11:22:02,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 11:22:02,919 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 11:22:02,919 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [250759134] [2020-12-09 11:22:02,919 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 11:22:02,920 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 11:22:02,920 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623426978] [2020-12-09 11:22:02,920 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 11:22:02,920 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 11:22:02,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 11:22:02,921 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 11:22:02,921 INFO L87 Difference]: Start difference. First operand 38 states and 43 transitions. Second operand 4 states. [2020-12-09 11:22:03,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 11:22:03,383 INFO L93 Difference]: Finished difference Result 50 states and 52 transitions. [2020-12-09 11:22:03,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 11:22:03,384 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-12-09 11:22:03,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 11:22:03,384 INFO L225 Difference]: With dead ends: 50 [2020-12-09 11:22:03,385 INFO L226 Difference]: Without dead ends: 46 [2020-12-09 11:22:03,385 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-09 11:22:03,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-12-09 11:22:03,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 40. [2020-12-09 11:22:03,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-12-09 11:22:03,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 44 transitions. [2020-12-09 11:22:03,392 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 44 transitions. Word has length 8 [2020-12-09 11:22:03,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 11:22:03,392 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 44 transitions. [2020-12-09 11:22:03,392 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 11:22:03,392 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 44 transitions. [2020-12-09 11:22:03,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-09 11:22:03,393 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 11:22:03,393 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 11:22:03,594 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-12-09 11:22:03,595 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 11:22:03,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 11:22:03,597 INFO L82 PathProgramCache]: Analyzing trace with hash 852768432, now seen corresponding path program 1 times [2020-12-09 11:22:03,599 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 11:22:03,599 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [636763881] [2020-12-09 11:22:03,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cf18d9c0-9281-4476-bf2c-768b92065b08/bin/utaipan/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2020-12-09 11:22:03,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 11:22:03,693 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-09 11:22:03,693 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 11:22:03,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 11:22:03,726 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 11:22:03,727 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [636763881] [2020-12-09 11:22:03,727 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 11:22:03,727 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 11:22:03,727 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434533089] [2020-12-09 11:22:03,727 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 11:22:03,727 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 11:22:03,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 11:22:03,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 11:22:03,728 INFO L87 Difference]: Start difference. First operand 40 states and 44 transitions. Second operand 4 states. [2020-12-09 11:22:04,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 11:22:04,251 INFO L93 Difference]: Finished difference Result 50 states and 53 transitions. [2020-12-09 11:22:04,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 11:22:04,251 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-12-09 11:22:04,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 11:22:04,252 INFO L225 Difference]: With dead ends: 50 [2020-12-09 11:22:04,252 INFO L226 Difference]: Without dead ends: 39 [2020-12-09 11:22:04,252 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-09 11:22:04,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-12-09 11:22:04,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 36. [2020-12-09 11:22:04,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-12-09 11:22:04,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 37 transitions. [2020-12-09 11:22:04,256 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 37 transitions. Word has length 10 [2020-12-09 11:22:04,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 11:22:04,256 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 37 transitions. [2020-12-09 11:22:04,256 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 11:22:04,256 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 37 transitions. [2020-12-09 11:22:04,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-09 11:22:04,257 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 11:22:04,257 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 11:22:04,457 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-12-09 11:22:04,459 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 11:22:04,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 11:22:04,460 INFO L82 PathProgramCache]: Analyzing trace with hash -1265507748, now seen corresponding path program 1 times [2020-12-09 11:22:04,461 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 11:22:04,462 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1593175035] [2020-12-09 11:22:04,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cf18d9c0-9281-4476-bf2c-768b92065b08/bin/utaipan/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2020-12-09 11:22:04,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 11:22:04,573 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-09 11:22:04,574 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 11:22:04,630 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 11:22:04,630 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 11:22:04,721 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-09 11:22:04,721 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1593175035] [2020-12-09 11:22:04,721 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [185288124] [2020-12-09 11:22:04,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cf18d9c0-9281-4476-bf2c-768b92065b08/bin/utaipan/cvc4 Starting monitored process 7 with cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with cvc4 --incremental --print-success --lang smt [2020-12-09 11:22:04,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 11:22:04,876 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-09 11:22:04,877 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 11:22:04,909 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 11:22:04,909 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 11:22:04,958 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-09 11:22:04,958 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [230657576] [2020-12-09 11:22:04,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cf18d9c0-9281-4476-bf2c-768b92065b08/bin/utaipan/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 11:22:05,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 11:22:05,064 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 11 conjunts are in the unsatisfiable core [2020-12-09 11:22:05,065 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 11:22:05,126 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 11:22:05,126 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 11:22:05,209 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 11:22:05,209 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2020-12-09 11:22:05,209 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 5, 4, 6, 5] total 9 [2020-12-09 11:22:05,209 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406565536] [2020-12-09 11:22:05,209 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-09 11:22:05,210 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 11:22:05,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-09 11:22:05,210 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2020-12-09 11:22:05,210 INFO L87 Difference]: Start difference. First operand 36 states and 37 transitions. Second operand 9 states. [2020-12-09 11:22:06,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 11:22:06,021 INFO L93 Difference]: Finished difference Result 58 states and 62 transitions. [2020-12-09 11:22:06,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-09 11:22:06,022 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 14 [2020-12-09 11:22:06,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 11:22:06,023 INFO L225 Difference]: With dead ends: 58 [2020-12-09 11:22:06,023 INFO L226 Difference]: Without dead ends: 54 [2020-12-09 11:22:06,023 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 66 SyntacticMatches, 7 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2020-12-09 11:22:06,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-12-09 11:22:06,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 32. [2020-12-09 11:22:06,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-12-09 11:22:06,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 33 transitions. [2020-12-09 11:22:06,028 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 33 transitions. Word has length 14 [2020-12-09 11:22:06,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 11:22:06,028 INFO L481 AbstractCegarLoop]: Abstraction has 32 states and 33 transitions. [2020-12-09 11:22:06,028 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-09 11:22:06,028 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 33 transitions. [2020-12-09 11:22:06,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-09 11:22:06,029 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 11:22:06,029 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 11:22:06,631 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 cvc4 --incremental --print-success --lang smt,6 mathsat -unsat_core_generation=3,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 11:22:06,632 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 11:22:06,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 11:22:06,633 INFO L82 PathProgramCache]: Analyzing trace with hash -677045505, now seen corresponding path program 1 times [2020-12-09 11:22:06,634 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 11:22:06,635 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [413480002] [2020-12-09 11:22:06,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cf18d9c0-9281-4476-bf2c-768b92065b08/bin/utaipan/mathsat Starting monitored process 9 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with mathsat -unsat_core_generation=3 [2020-12-09 11:22:06,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 11:22:06,763 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-09 11:22:06,764 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 11:22:06,821 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 11:22:06,821 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 11:22:07,627 WARN L197 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2020-12-09 11:22:08,279 WARN L197 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2020-12-09 11:22:08,294 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 11:22:08,294 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [413480002] [2020-12-09 11:22:08,295 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1548682263] [2020-12-09 11:22:08,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cf18d9c0-9281-4476-bf2c-768b92065b08/bin/utaipan/cvc4 Starting monitored process 10 with cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with cvc4 --incremental --print-success --lang smt [2020-12-09 11:22:08,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 11:22:08,545 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-09 11:22:08,546 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 11:22:08,565 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 11:22:08,565 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 11:22:08,595 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 11:22:08,595 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [905043440] [2020-12-09 11:22:08,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cf18d9c0-9281-4476-bf2c-768b92065b08/bin/utaipan/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 11:22:08,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 11:22:08,773 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 15 conjunts are in the unsatisfiable core [2020-12-09 11:22:08,774 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 11:22:08,925 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 11:22:08,925 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 11:22:09,849 WARN L197 SmtUtils]: Spent 311.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2020-12-09 11:22:09,858 INFO L398 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-12-09 11:22:09,858 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-12-09 11:22:12,864 WARN L197 SmtUtils]: Spent 344.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-12-09 11:22:19,713 WARN L197 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 23 [2020-12-09 11:22:28,726 WARN L197 SmtUtils]: Spent 349.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2020-12-09 11:22:28,732 INFO L398 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-12-09 11:22:28,732 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-12-09 11:22:31,419 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 2 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-09 11:22:31,419 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2020-12-09 11:22:31,420 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 8, 8] total 15 [2020-12-09 11:22:31,420 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483563852] [2020-12-09 11:22:31,420 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-12-09 11:22:31,420 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 11:22:31,421 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-12-09 11:22:31,421 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=135, Unknown=8, NotChecked=0, Total=210 [2020-12-09 11:22:31,421 INFO L87 Difference]: Start difference. First operand 32 states and 33 transitions. Second operand 15 states. [2020-12-09 11:22:41,969 WARN L197 SmtUtils]: Spent 8.79 s on a formula simplification that was a NOOP. DAG size: 35 [2020-12-09 11:22:56,675 WARN L197 SmtUtils]: Spent 9.09 s on a formula simplification that was a NOOP. DAG size: 30 [2020-12-09 11:23:11,467 WARN L197 SmtUtils]: Spent 9.25 s on a formula simplification that was a NOOP. DAG size: 34 [2020-12-09 11:23:36,249 WARN L197 SmtUtils]: Spent 351.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2020-12-09 11:24:03,979 WARN L197 SmtUtils]: Spent 12.58 s on a formula simplification that was a NOOP. DAG size: 31 [2020-12-09 11:24:17,394 WARN L197 SmtUtils]: Spent 8.47 s on a formula simplification that was a NOOP. DAG size: 32 [2020-12-09 11:24:34,685 WARN L197 SmtUtils]: Spent 462.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2020-12-09 11:24:54,575 WARN L197 SmtUtils]: Spent 8.35 s on a formula simplification that was a NOOP. DAG size: 28 [2020-12-09 11:25:08,547 WARN L197 SmtUtils]: Spent 446.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-12-09 11:25:27,766 WARN L197 SmtUtils]: Spent 10.40 s on a formula simplification that was a NOOP. DAG size: 32 [2020-12-09 11:25:34,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 11:25:34,114 INFO L93 Difference]: Finished difference Result 75 states and 83 transitions. [2020-12-09 11:25:34,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-12-09 11:25:34,122 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 16 [2020-12-09 11:25:34,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 11:25:34,123 INFO L225 Difference]: With dead ends: 75 [2020-12-09 11:25:34,123 INFO L226 Difference]: Without dead ends: 61 [2020-12-09 11:25:34,123 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 73 SyntacticMatches, 5 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 170 ImplicationChecksByTransitivity, 131.9s TimeCoverageRelationStatistics Valid=217, Invalid=409, Unknown=24, NotChecked=0, Total=650 [2020-12-09 11:25:34,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-12-09 11:25:34,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 36. [2020-12-09 11:25:34,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-12-09 11:25:34,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 37 transitions. [2020-12-09 11:25:34,130 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 37 transitions. Word has length 16 [2020-12-09 11:25:34,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 11:25:34,130 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 37 transitions. [2020-12-09 11:25:34,130 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-12-09 11:25:34,130 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 37 transitions. [2020-12-09 11:25:34,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-12-09 11:25:34,131 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 11:25:34,131 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1] [2020-12-09 11:25:34,733 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 mathsat -unsat_core_generation=3,10 cvc4 --incremental --print-success --lang smt,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 11:25:34,734 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 11:25:34,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 11:25:34,735 INFO L82 PathProgramCache]: Analyzing trace with hash 1706788820, now seen corresponding path program 1 times [2020-12-09 11:25:34,736 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 11:25:34,737 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [302530866] [2020-12-09 11:25:34,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cf18d9c0-9281-4476-bf2c-768b92065b08/bin/utaipan/mathsat Starting monitored process 12 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with mathsat -unsat_core_generation=3 [2020-12-09 11:25:34,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 11:25:34,992 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-09 11:25:34,993 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 11:25:35,101 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 11:25:35,102 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 11:25:35,901 WARN L197 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2020-12-09 11:25:37,106 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-12-09 11:25:37,106 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [302530866] [2020-12-09 11:25:37,106 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2026372121] [2020-12-09 11:25:37,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cf18d9c0-9281-4476-bf2c-768b92065b08/bin/utaipan/cvc4 Starting monitored process 13 with cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with cvc4 --incremental --print-success --lang smt [2020-12-09 11:25:37,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 11:25:37,501 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-09 11:25:37,502 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 11:25:37,568 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 11:25:37,568 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 11:25:38,859 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-12-09 11:25:38,860 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2017451583] [2020-12-09 11:25:38,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cf18d9c0-9281-4476-bf2c-768b92065b08/bin/utaipan/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 11:25:39,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 11:25:39,151 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 24 conjunts are in the unsatisfiable core [2020-12-09 11:25:39,153 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 11:25:39,783 WARN L197 SmtUtils]: Spent 365.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 22 [2020-12-09 11:25:40,097 WARN L197 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 30 [2020-12-09 11:25:40,295 WARN L197 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 24 [2020-12-09 11:25:40,345 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 11:25:40,345 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 11:25:40,988 WARN L197 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-12-09 11:25:40,993 INFO L398 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-12-09 11:25:40,993 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-12-09 11:25:44,575 WARN L197 SmtUtils]: Spent 1.57 s on a formula simplification that was a NOOP. DAG size: 26 [2020-12-09 11:25:48,489 WARN L197 SmtUtils]: Spent 1.91 s on a formula simplification that was a NOOP. DAG size: 28 [2020-12-09 11:25:48,494 INFO L398 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-12-09 11:25:48,494 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-12-09 11:25:50,646 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ sign_extend 32) (_ bv1 32))) (.cse1 ((_ sign_extend 32) (_ bv2 32)))) (or (not (= c_ULTIMATE.start_main_~s~0 (bvadd (bvmul c_ULTIMATE.start_main_~a~0 c_ULTIMATE.start_main_~a~0) (bvmul .cse0 .cse0) (bvmul (_ bv2 64) (bvmul .cse0 c_ULTIMATE.start_main_~a~0))))) (= ((_ sign_extend 32) (_ bv0 32)) (bvadd (bvneg (bvmul ((_ sign_extend 32) (_ bv4 32)) c_ULTIMATE.start_main_~s~0)) (bvmul c_ULTIMATE.start_main_~t~0 c_ULTIMATE.start_main_~t~0) (bvmul c_ULTIMATE.start_main_~t~0 .cse1) .cse0)) (not (= (bvadd .cse0 (bvmul c_ULTIMATE.start_main_~a~0 .cse1)) c_ULTIMATE.start_main_~t~0)))) is different from true [2020-12-09 11:25:50,665 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-12-09 11:25:50,665 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 5 imperfect interpolant sequences. [2020-12-09 11:25:50,665 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [6, 4, 6, 4, 11] total 19 [2020-12-09 11:25:50,665 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305784896] [2020-12-09 11:25:50,666 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-09 11:25:50,666 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 11:25:50,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-09 11:25:50,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=209, Unknown=1, NotChecked=32, Total=342 [2020-12-09 11:25:50,666 INFO L87 Difference]: Start difference. First operand 36 states and 37 transitions. Second operand 8 states. [2020-12-09 11:25:51,741 WARN L197 SmtUtils]: Spent 492.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-12-09 11:26:11,476 WARN L197 SmtUtils]: Spent 9.06 s on a formula simplification that was a NOOP. DAG size: 34 [2020-12-09 11:26:15,794 WARN L197 SmtUtils]: Spent 2.28 s on a formula simplification that was a NOOP. DAG size: 30 [2020-12-09 11:26:19,432 WARN L197 SmtUtils]: Spent 1.98 s on a formula simplification that was a NOOP. DAG size: 30 [2020-12-09 11:26:24,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 11:26:24,398 INFO L93 Difference]: Finished difference Result 44 states and 44 transitions. [2020-12-09 11:26:24,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-09 11:26:24,399 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 26 [2020-12-09 11:26:24,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 11:26:24,399 INFO L225 Difference]: With dead ends: 44 [2020-12-09 11:26:24,399 INFO L226 Difference]: Without dead ends: 34 [2020-12-09 11:26:24,400 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 124 SyntacticMatches, 10 SemanticMatches, 21 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 38.1s TimeCoverageRelationStatistics Valid=147, Invalid=316, Unknown=3, NotChecked=40, Total=506 [2020-12-09 11:26:24,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-12-09 11:26:24,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 28. [2020-12-09 11:26:24,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-12-09 11:26:24,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 28 transitions. [2020-12-09 11:26:24,405 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 28 transitions. Word has length 26 [2020-12-09 11:26:24,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 11:26:24,405 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 28 transitions. [2020-12-09 11:26:24,405 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-09 11:26:24,405 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 28 transitions. [2020-12-09 11:26:24,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-12-09 11:26:24,406 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 11:26:24,406 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 11:26:25,007 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,13 cvc4 --incremental --print-success --lang smt,12 mathsat -unsat_core_generation=3 [2020-12-09 11:26:25,009 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 11:26:25,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 11:26:25,010 INFO L82 PathProgramCache]: Analyzing trace with hash -1772370605, now seen corresponding path program 1 times [2020-12-09 11:26:25,010 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 11:26:25,011 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [854058613] [2020-12-09 11:26:25,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cf18d9c0-9281-4476-bf2c-768b92065b08/bin/utaipan/mathsat Starting monitored process 15 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with mathsat -unsat_core_generation=3 [2020-12-09 11:26:25,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 11:26:25,316 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-09 11:26:25,317 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 11:26:25,368 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 11:26:25,368 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 11:26:25,468 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 11:26:25,469 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [854058613] [2020-12-09 11:26:25,469 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1074686934] [2020-12-09 11:26:25,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cf18d9c0-9281-4476-bf2c-768b92065b08/bin/utaipan/cvc4 Starting monitored process 16 with cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with cvc4 --incremental --print-success --lang smt [2020-12-09 11:26:25,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 11:26:25,856 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-09 11:26:25,857 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 11:26:25,898 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 11:26:25,898 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 11:26:25,913 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 11:26:25,913 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [569308504] [2020-12-09 11:26:25,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_cf18d9c0-9281-4476-bf2c-768b92065b08/bin/utaipan/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 11:26:26,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 11:26:26,257 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 32 conjunts are in the unsatisfiable core [2020-12-09 11:26:26,259 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 11:26:27,665 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 11:26:27,665 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 11:26:29,522 WARN L197 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2020-12-09 11:26:31,034 WARN L197 SmtUtils]: Spent 384.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-12-09 11:26:31,038 INFO L398 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-12-09 11:26:31,039 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-12-09 11:26:37,201 WARN L197 SmtUtils]: Spent 1.42 s on a formula simplification that was a NOOP. DAG size: 26 [2020-12-09 11:26:44,387 WARN L197 SmtUtils]: Spent 1.86 s on a formula simplification that was a NOOP. DAG size: 28 [2020-12-09 11:26:44,392 INFO L398 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-12-09 11:26:44,393 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-12-09 11:26:46,546 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ sign_extend 32) (_ bv1 32))) (.cse1 ((_ sign_extend 32) (_ bv2 32)))) (or (not (= c_ULTIMATE.start_main_~s~0 (bvadd (bvmul c_ULTIMATE.start_main_~a~0 c_ULTIMATE.start_main_~a~0) (bvmul .cse0 .cse0) (bvmul (_ bv2 64) (bvmul .cse0 c_ULTIMATE.start_main_~a~0))))) (= ((_ sign_extend 32) (_ bv0 32)) (bvadd (bvneg (bvmul ((_ sign_extend 32) (_ bv4 32)) c_ULTIMATE.start_main_~s~0)) (bvmul c_ULTIMATE.start_main_~t~0 c_ULTIMATE.start_main_~t~0) (bvmul c_ULTIMATE.start_main_~t~0 .cse1) .cse0)) (not (= (bvadd .cse0 (bvmul c_ULTIMATE.start_main_~a~0 .cse1)) c_ULTIMATE.start_main_~t~0)))) is different from true [2020-12-09 11:26:46,566 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-12-09 11:26:46,566 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 5 imperfect interpolant sequences. [2020-12-09 11:26:46,566 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [5, 5, 5, 5, 11] total 25 [2020-12-09 11:26:46,566 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147778385] [2020-12-09 11:26:46,567 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-09 11:26:46,567 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 11:26:46,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-09 11:26:46,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=445, Unknown=1, NotChecked=44, Total=600 [2020-12-09 11:26:46,567 INFO L87 Difference]: Start difference. First operand 28 states and 28 transitions. Second operand 8 states. [2020-12-09 11:26:48,368 WARN L197 SmtUtils]: Spent 390.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-12-09 11:27:07,479 WARN L197 SmtUtils]: Spent 9.07 s on a formula simplification that was a NOOP. DAG size: 34 [2020-12-09 11:27:14,116 WARN L197 SmtUtils]: Spent 2.33 s on a formula simplification that was a NOOP. DAG size: 30 [2020-12-09 11:27:21,454 WARN L197 SmtUtils]: Spent 1.77 s on a formula simplification that was a NOOP. DAG size: 30 [2020-12-09 11:27:22,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 11:27:22,532 INFO L93 Difference]: Finished difference Result 28 states and 28 transitions. [2020-12-09 11:27:22,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-09 11:27:22,540 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 27 [2020-12-09 11:27:22,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 11:27:22,540 INFO L225 Difference]: With dead ends: 28 [2020-12-09 11:27:22,540 INFO L226 Difference]: Without dead ends: 0 [2020-12-09 11:27:22,541 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 132 SyntacticMatches, 5 SemanticMatches, 27 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 149 ImplicationChecksByTransitivity, 48.6s TimeCoverageRelationStatistics Valid=155, Invalid=602, Unknown=3, NotChecked=52, Total=812 [2020-12-09 11:27:22,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-09 11:27:22,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-09 11:27:22,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-09 11:27:22,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-09 11:27:22,541 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 27 [2020-12-09 11:27:22,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 11:27:22,541 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-09 11:27:22,541 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-09 11:27:22,541 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-09 11:27:22,541 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-09 11:27:23,143 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 cvc4 --incremental --print-success --lang smt,15 mathsat -unsat_core_generation=3,17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 11:27:23,149 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-09 11:27:51,979 WARN L197 SmtUtils]: Spent 28.71 s on a formula simplification. DAG size of input: 72 DAG size of output: 37 [2020-12-09 11:28:15,021 WARN L197 SmtUtils]: Spent 23.04 s on a formula simplification. DAG size of input: 74 DAG size of output: 38 [2020-12-09 11:28:29,686 WARN L197 SmtUtils]: Spent 14.66 s on a formula simplification. DAG size of input: 70 DAG size of output: 39 [2020-12-09 11:28:48,654 WARN L197 SmtUtils]: Spent 18.97 s on a formula simplification. DAG size of input: 69 DAG size of output: 35 [2020-12-09 11:29:03,300 WARN L197 SmtUtils]: Spent 14.64 s on a formula simplification. DAG size of input: 69 DAG size of output: 37 [2020-12-09 11:29:30,647 WARN L197 SmtUtils]: Spent 27.35 s on a formula simplification. DAG size of input: 69 DAG size of output: 35 [2020-12-09 11:29:30,649 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2020-12-09 11:29:30,649 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2020-12-09 11:29:30,649 INFO L265 CegarLoopResult]: At program point L48(lines 21 49) the Hoare annotation is: true [2020-12-09 11:29:30,650 INFO L262 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-12-09 11:29:30,650 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2020-12-09 11:29:30,650 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-12-09 11:29:30,650 INFO L262 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-12-09 11:29:30,650 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2020-12-09 11:29:30,650 INFO L262 CegarLoopResult]: For program point L12(lines 12 15) no Hoare annotation was computed. [2020-12-09 11:29:30,650 INFO L258 CegarLoopResult]: At program point L12-2(lines 11 17) the Hoare annotation is: (let ((.cse2 ((_ sign_extend 32) (_ bv2 32)))) (let ((.cse1 (bvmul ULTIMATE.start_main_~a~0 .cse2)) (.cse0 ((_ sign_extend 32) (_ bv1 32)))) (and (= (bvadd .cse0 .cse1) ULTIMATE.start_main_~t~0) (= (bvadd ULTIMATE.start___VERIFIER_assert_~cond (_ bv4294967295 32)) (_ bv0 32)) (= (bvadd (bvmul ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0) (bvmul (bvmul .cse0 .cse0) (_ bv4 64)) (bvmul (bvmul .cse0 ULTIMATE.start_main_~a~0) (_ bv4 64))) (bvadd .cse0 ULTIMATE.start_main_~s~0 (bvmul .cse0 .cse2) .cse1)) (= ((_ sign_extend 32) (_ bv0 32)) (bvadd (bvmul ULTIMATE.start_main_~t~0 .cse2) .cse0 (bvneg (bvmul ((_ sign_extend 32) (_ bv4 32)) ULTIMATE.start_main_~s~0)) (bvmul ULTIMATE.start_main_~t~0 ULTIMATE.start_main_~t~0)))))) [2020-12-09 11:29:30,650 INFO L262 CegarLoopResult]: For program point L12-3(lines 12 15) no Hoare annotation was computed. [2020-12-09 11:29:30,650 INFO L258 CegarLoopResult]: At program point L12-5(lines 11 17) the Hoare annotation is: (let ((.cse2 ((_ sign_extend 32) (_ bv2 32)))) (let ((.cse1 (bvmul ULTIMATE.start_main_~a~0 .cse2)) (.cse0 ((_ sign_extend 32) (_ bv1 32)))) (and (= (bvadd .cse0 .cse1) ULTIMATE.start_main_~t~0) (not (= ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32))) (= (bvadd (bvmul ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0) (bvmul (bvmul .cse0 .cse0) (_ bv4 64)) (bvmul (bvmul .cse0 ULTIMATE.start_main_~a~0) (_ bv4 64))) (bvadd .cse0 ULTIMATE.start_main_~s~0 (bvmul .cse0 .cse2) .cse1)) (= ((_ sign_extend 32) (_ bv0 32)) (bvadd (bvmul ULTIMATE.start_main_~t~0 .cse2) .cse0 (bvneg (bvmul ((_ sign_extend 32) (_ bv4 32)) ULTIMATE.start_main_~s~0)) (bvmul ULTIMATE.start_main_~t~0 ULTIMATE.start_main_~t~0)))))) [2020-12-09 11:29:30,650 INFO L262 CegarLoopResult]: For program point L12-6(lines 12 15) no Hoare annotation was computed. [2020-12-09 11:29:30,650 INFO L258 CegarLoopResult]: At program point L12-8(lines 36 37) the Hoare annotation is: (let ((.cse2 ((_ sign_extend 32) (_ bv2 32)))) (let ((.cse1 (bvmul ULTIMATE.start_main_~a~0 .cse2)) (.cse0 ((_ sign_extend 32) (_ bv1 32)))) (and (= (bvadd .cse0 .cse1) ULTIMATE.start_main_~t~0) (not (= ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32))) (= (bvadd (bvmul ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0) (bvmul (bvmul .cse0 .cse0) (_ bv4 64)) (bvmul (bvmul .cse0 ULTIMATE.start_main_~a~0) (_ bv4 64))) (bvadd .cse0 ULTIMATE.start_main_~s~0 (bvmul .cse0 .cse2) .cse1)) (= ((_ sign_extend 32) (_ bv0 32)) (bvadd (bvmul ULTIMATE.start_main_~t~0 .cse2) .cse0 (bvneg (bvmul ((_ sign_extend 32) (_ bv4 32)) ULTIMATE.start_main_~s~0)) (bvmul ULTIMATE.start_main_~t~0 ULTIMATE.start_main_~t~0)))))) [2020-12-09 11:29:30,650 INFO L262 CegarLoopResult]: For program point L12-9(lines 12 15) no Hoare annotation was computed. [2020-12-09 11:29:30,650 INFO L258 CegarLoopResult]: At program point L12-11(lines 11 17) the Hoare annotation is: (let ((.cse1 ((_ sign_extend 32) (_ bv0 32))) (.cse0 ((_ sign_extend 32) (_ bv1 32)))) (or (and (= ULTIMATE.start_main_~s~0 .cse0) (= .cse1 ULTIMATE.start_main_~a~0) (= ULTIMATE.start_main_~t~0 .cse0)) (let ((.cse2 ((_ sign_extend 32) (_ bv2 32)))) (and (= (bvadd .cse0 (bvmul ULTIMATE.start_main_~a~0 .cse2)) ULTIMATE.start_main_~t~0) (= (bvadd ULTIMATE.start___VERIFIER_assert_~cond (_ bv4294967295 32)) (_ bv0 32)) (= .cse1 (bvadd (bvmul ULTIMATE.start_main_~t~0 .cse2) .cse0 (bvneg (bvmul ((_ sign_extend 32) (_ bv4 32)) ULTIMATE.start_main_~s~0)) (bvmul ULTIMATE.start_main_~t~0 ULTIMATE.start_main_~t~0))) (= ULTIMATE.start_main_~s~0 (bvadd (bvmul ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0) (bvmul .cse0 .cse0) (bvmul (bvmul .cse0 ULTIMATE.start_main_~a~0) (_ bv2 64)))))))) [2020-12-09 11:29:30,651 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-12-09 11:29:30,651 INFO L262 CegarLoopResult]: For program point L12-12(lines 12 15) no Hoare annotation was computed. [2020-12-09 11:29:30,651 INFO L258 CegarLoopResult]: At program point L12-14(lines 11 17) the Hoare annotation is: (let ((.cse0 ((_ sign_extend 32) (_ bv1 32)))) (or (and (= ULTIMATE.start_main_~s~0 .cse0) (= ULTIMATE.start_main_~t~0 .cse0)) (let ((.cse1 ((_ sign_extend 32) (_ bv2 32)))) (and (= (bvadd .cse0 (bvmul ULTIMATE.start_main_~a~0 .cse1)) ULTIMATE.start_main_~t~0) (= (bvadd ULTIMATE.start___VERIFIER_assert_~cond (_ bv4294967295 32)) (_ bv0 32)) (= ((_ sign_extend 32) (_ bv0 32)) (bvadd (bvmul ULTIMATE.start_main_~t~0 .cse1) .cse0 (bvneg (bvmul ((_ sign_extend 32) (_ bv4 32)) ULTIMATE.start_main_~s~0)) (bvmul ULTIMATE.start_main_~t~0 ULTIMATE.start_main_~t~0))) (= ULTIMATE.start_main_~s~0 (bvadd (bvmul ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0) (bvmul .cse0 .cse0) (bvmul (bvmul .cse0 ULTIMATE.start_main_~a~0) (_ bv2 64)))))))) [2020-12-09 11:29:30,651 INFO L262 CegarLoopResult]: For program point L12-15(lines 12 15) no Hoare annotation was computed. [2020-12-09 11:29:30,651 INFO L265 CegarLoopResult]: At program point L12-17(lines 11 17) the Hoare annotation is: true [2020-12-09 11:29:30,651 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2020-12-09 11:29:30,651 INFO L262 CegarLoopResult]: For program point L13(lines 13 14) no Hoare annotation was computed. [2020-12-09 11:29:30,651 INFO L262 CegarLoopResult]: For program point L13-1(lines 13 14) no Hoare annotation was computed. [2020-12-09 11:29:30,651 INFO L262 CegarLoopResult]: For program point L13-2(lines 13 14) no Hoare annotation was computed. [2020-12-09 11:29:30,651 INFO L262 CegarLoopResult]: For program point L13-3(lines 13 14) no Hoare annotation was computed. [2020-12-09 11:29:30,651 INFO L262 CegarLoopResult]: For program point L13-4(lines 13 14) no Hoare annotation was computed. [2020-12-09 11:29:30,651 INFO L262 CegarLoopResult]: For program point L13-5(lines 13 14) no Hoare annotation was computed. [2020-12-09 11:29:30,651 INFO L262 CegarLoopResult]: For program point L30-1(lines 30 42) no Hoare annotation was computed. [2020-12-09 11:29:30,651 INFO L258 CegarLoopResult]: At program point L30-3(lines 30 42) the Hoare annotation is: (let ((.cse1 ((_ sign_extend 32) (_ bv0 32))) (.cse0 ((_ sign_extend 32) (_ bv1 32)))) (or (and (= ULTIMATE.start_main_~s~0 .cse0) (= .cse1 ULTIMATE.start_main_~a~0) (= ULTIMATE.start_main_~t~0 .cse0)) (let ((.cse2 ((_ sign_extend 32) (_ bv2 32)))) (and (= (bvadd .cse0 (bvmul ULTIMATE.start_main_~a~0 .cse2)) ULTIMATE.start_main_~t~0) (not (= ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32))) (= .cse1 (bvadd (bvmul ULTIMATE.start_main_~t~0 .cse2) .cse0 (bvneg (bvmul ((_ sign_extend 32) (_ bv4 32)) ULTIMATE.start_main_~s~0)) (bvmul ULTIMATE.start_main_~t~0 ULTIMATE.start_main_~t~0))) (= ULTIMATE.start_main_~s~0 (bvadd (bvmul ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0) (bvmul .cse0 .cse0) (bvmul (bvmul .cse0 ULTIMATE.start_main_~a~0) (_ bv2 64)))))))) [2020-12-09 11:29:30,651 INFO L262 CegarLoopResult]: For program point L30-4(lines 30 42) no Hoare annotation was computed. [2020-12-09 11:29:30,651 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2020-12-09 11:29:30,655 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.UnsupportedOperationException: translation of (bvneg (_ BitVec 64) (_ BitVec 64)) not yet implemented, please contact Matthias at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:211) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:165) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:165) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:165) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.RCFGBacktranslator.translateExpression(RCFGBacktranslator.java:394) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.RCFGBacktranslator.translateExpression(RCFGBacktranslator.java:1) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateExpression(ModelTranslationContainer.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateExpressionToString(ModelTranslationContainer.java:89) at de.uni_freiburg.informatik.ultimate.core.lib.results.InvariantResult.getLongDescription(InvariantResult.java:65) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ResultService.reportResult(ResultService.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.reportResult(TraceAbstractionStarter.java:796) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.createInvariantResults(TraceAbstractionStarter.java:283) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:240) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2020-12-09 11:29:30,658 INFO L168 Benchmark]: Toolchain (without parser) took 449744.73 ms. Allocated memory was 60.8 MB in the beginning and 73.4 MB in the end (delta: 12.6 MB). Free memory was 41.4 MB in the beginning and 40.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 35.6 MB. Max. memory is 16.1 GB. [2020-12-09 11:29:30,658 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 60.8 MB. Free memory was 43.0 MB in the beginning and 42.9 MB in the end (delta: 83.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 11:29:30,658 INFO L168 Benchmark]: CACSL2BoogieTranslator took 197.91 ms. Allocated memory is still 60.8 MB. Free memory was 41.2 MB in the beginning and 43.5 MB in the end (delta: -2.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-12-09 11:29:30,659 INFO L168 Benchmark]: Boogie Procedure Inliner took 34.37 ms. Allocated memory is still 60.8 MB. Free memory was 43.3 MB in the beginning and 41.8 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 11:29:30,659 INFO L168 Benchmark]: Boogie Preprocessor took 19.30 ms. Allocated memory is still 60.8 MB. Free memory was 41.8 MB in the beginning and 40.5 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 11:29:30,659 INFO L168 Benchmark]: RCFGBuilder took 498.52 ms. Allocated memory was 60.8 MB in the beginning and 73.4 MB in the end (delta: 12.6 MB). Free memory was 40.5 MB in the beginning and 53.7 MB in the end (delta: -13.2 MB). Peak memory consumption was 16.1 MB. Max. memory is 16.1 GB. [2020-12-09 11:29:30,660 INFO L168 Benchmark]: TraceAbstraction took 448989.78 ms. Allocated memory is still 73.4 MB. Free memory was 53.0 MB in the beginning and 40.1 MB in the end (delta: 12.9 MB). Peak memory consumption was 35.4 MB. Max. memory is 16.1 GB. [2020-12-09 11:29:30,662 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 60.8 MB. Free memory was 43.0 MB in the beginning and 42.9 MB in the end (delta: 83.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 197.91 ms. Allocated memory is still 60.8 MB. Free memory was 41.2 MB in the beginning and 43.5 MB in the end (delta: -2.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 34.37 ms. Allocated memory is still 60.8 MB. Free memory was 43.3 MB in the beginning and 41.8 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 19.30 ms. Allocated memory is still 60.8 MB. Free memory was 41.8 MB in the beginning and 40.5 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 498.52 ms. Allocated memory was 60.8 MB in the beginning and 73.4 MB in the end (delta: 12.6 MB). Free memory was 40.5 MB in the beginning and 53.7 MB in the end (delta: -13.2 MB). Peak memory consumption was 16.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 448989.78 ms. Allocated memory is still 73.4 MB. Free memory was 53.0 MB in the beginning and 40.1 MB in the end (delta: 12.9 MB). Peak memory consumption was 35.4 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 6 specifications checked. All of them hold - ExceptionOrErrorResult: UnsupportedOperationException: translation of (bvneg (_ BitVec 64) (_ BitVec 64)) not yet implemented, please contact Matthias de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: UnsupportedOperationException: translation of (bvneg (_ BitVec 64) (_ BitVec 64)) not yet implemented, please contact Matthias: de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:211) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...