./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/freire1_valuebound5.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a94e3c0-da37-42c9-883e-1d3fec75b6fc/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a94e3c0-da37-42c9-883e-1d3fec75b6fc/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a94e3c0-da37-42c9-883e-1d3fec75b6fc/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a94e3c0-da37-42c9-883e-1d3fec75b6fc/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/freire1_valuebound5.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a94e3c0-da37-42c9-883e-1d3fec75b6fc/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a94e3c0-da37-42c9-883e-1d3fec75b6fc/bin/utaipan-vmNK8stdcF --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6437fdc3c0b95eb5fb3a7e28606efb50e2431074b1de5f5cf4c718827adac36d --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 23:23:51,717 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 23:23:51,719 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 23:23:51,782 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 23:23:51,783 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 23:23:51,787 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 23:23:51,789 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 23:23:51,793 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 23:23:51,796 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 23:23:51,803 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 23:23:51,804 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 23:23:51,807 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 23:23:51,807 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 23:23:51,810 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 23:23:51,813 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 23:23:51,819 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 23:23:51,821 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 23:23:51,822 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 23:23:51,825 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 23:23:51,833 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 23:23:51,835 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 23:23:51,839 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 23:23:51,842 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 23:23:51,843 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 23:23:51,853 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 23:23:51,853 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 23:23:51,854 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 23:23:51,856 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 23:23:51,857 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 23:23:51,858 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 23:23:51,859 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 23:23:51,860 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 23:23:51,862 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 23:23:51,864 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 23:23:51,866 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 23:23:51,866 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 23:23:51,867 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 23:23:51,867 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 23:23:51,867 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 23:23:51,869 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 23:23:51,869 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 23:23:51,870 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a94e3c0-da37-42c9-883e-1d3fec75b6fc/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-12 23:23:51,922 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 23:23:51,924 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 23:23:51,926 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 23:23:51,926 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 23:23:51,926 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 23:23:51,927 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 23:23:51,927 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 23:23:51,927 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-12 23:23:51,927 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 23:23:51,928 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 23:23:51,935 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-12 23:23:51,936 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-12 23:23:51,936 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 23:23:51,936 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-12 23:23:51,936 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-12 23:23:51,937 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-12 23:23:51,938 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 23:23:51,938 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-12 23:23:51,938 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-12 23:23:51,938 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-12 23:23:51,939 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 23:23:51,939 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-12 23:23:51,939 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 23:23:51,939 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-12 23:23:51,940 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 23:23:51,940 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-12 23:23:51,940 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-12 23:23:51,940 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 23:23:51,941 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-12 23:23:51,942 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 23:23:51,943 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 23:23:51,943 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:23:51,943 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 23:23:51,944 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 23:23:51,944 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-12 23:23:51,944 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-12 23:23:51,945 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-12 23:23:51,945 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-12 23:23:51,945 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 23:23:51,945 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 23:23:51,946 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a94e3c0-da37-42c9-883e-1d3fec75b6fc/bin/utaipan-vmNK8stdcF/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a94e3c0-da37-42c9-883e-1d3fec75b6fc/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6437fdc3c0b95eb5fb3a7e28606efb50e2431074b1de5f5cf4c718827adac36d [2021-11-12 23:23:52,277 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 23:23:52,301 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 23:23:52,304 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 23:23:52,305 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 23:23:52,306 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 23:23:52,307 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a94e3c0-da37-42c9-883e-1d3fec75b6fc/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/nla-digbench-scaling/freire1_valuebound5.c [2021-11-12 23:23:52,391 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a94e3c0-da37-42c9-883e-1d3fec75b6fc/bin/utaipan-vmNK8stdcF/data/6f7ecc307/3afc2bcbdf5d45969b66aae8e79a7dd3/FLAG7078b1dab [2021-11-12 23:23:53,022 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 23:23:53,023 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a94e3c0-da37-42c9-883e-1d3fec75b6fc/sv-benchmarks/c/nla-digbench-scaling/freire1_valuebound5.c [2021-11-12 23:23:53,035 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a94e3c0-da37-42c9-883e-1d3fec75b6fc/bin/utaipan-vmNK8stdcF/data/6f7ecc307/3afc2bcbdf5d45969b66aae8e79a7dd3/FLAG7078b1dab [2021-11-12 23:23:53,054 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a94e3c0-da37-42c9-883e-1d3fec75b6fc/bin/utaipan-vmNK8stdcF/data/6f7ecc307/3afc2bcbdf5d45969b66aae8e79a7dd3 [2021-11-12 23:23:53,057 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 23:23:53,059 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 23:23:53,063 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 23:23:53,064 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 23:23:53,068 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 23:23:53,069 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:23:53" (1/1) ... [2021-11-12 23:23:53,070 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78311886 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:23:53, skipping insertion in model container [2021-11-12 23:23:53,070 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:23:53" (1/1) ... [2021-11-12 23:23:53,079 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 23:23:53,095 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 23:23:53,298 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a94e3c0-da37-42c9-883e-1d3fec75b6fc/sv-benchmarks/c/nla-digbench-scaling/freire1_valuebound5.c[712,725] [2021-11-12 23:23:53,316 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:23:53,325 INFO L203 MainTranslator]: Completed pre-run [2021-11-12 23:23:53,339 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a94e3c0-da37-42c9-883e-1d3fec75b6fc/sv-benchmarks/c/nla-digbench-scaling/freire1_valuebound5.c[712,725] [2021-11-12 23:23:53,345 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:23:53,360 INFO L208 MainTranslator]: Completed translation [2021-11-12 23:23:53,360 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:23:53 WrapperNode [2021-11-12 23:23:53,361 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 23:23:53,362 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-12 23:23:53,362 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-12 23:23:53,362 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-12 23:23:53,370 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:23:53" (1/1) ... [2021-11-12 23:23:53,379 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:23:53" (1/1) ... [2021-11-12 23:23:53,398 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-12 23:23:53,399 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-12 23:23:53,400 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-12 23:23:53,400 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-12 23:23:53,410 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:23:53" (1/1) ... [2021-11-12 23:23:53,410 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:23:53" (1/1) ... [2021-11-12 23:23:53,412 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:23:53" (1/1) ... [2021-11-12 23:23:53,413 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:23:53" (1/1) ... [2021-11-12 23:23:53,418 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:23:53" (1/1) ... [2021-11-12 23:23:53,423 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:23:53" (1/1) ... [2021-11-12 23:23:53,424 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:23:53" (1/1) ... [2021-11-12 23:23:53,426 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-12 23:23:53,427 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-12 23:23:53,428 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-12 23:23:53,428 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-12 23:23:53,429 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:23:53" (1/1) ... [2021-11-12 23:23:53,438 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:23:53,450 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a94e3c0-da37-42c9-883e-1d3fec75b6fc/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 23:23:53,463 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a94e3c0-da37-42c9-883e-1d3fec75b6fc/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-12 23:23:53,468 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a94e3c0-da37-42c9-883e-1d3fec75b6fc/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-12 23:23:53,504 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-12 23:23:53,506 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-12 23:23:53,507 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-12 23:23:53,507 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-12 23:23:53,507 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-12 23:23:53,508 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-12 23:23:53,732 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-12 23:23:53,733 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-12 23:23:53,736 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:23:53 BoogieIcfgContainer [2021-11-12 23:23:53,736 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-12 23:23:53,738 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-12 23:23:53,738 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-12 23:23:53,742 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-12 23:23:53,742 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 11:23:53" (1/3) ... [2021-11-12 23:23:53,743 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d5ef2c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 11:23:53, skipping insertion in model container [2021-11-12 23:23:53,743 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:23:53" (2/3) ... [2021-11-12 23:23:53,744 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d5ef2c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 11:23:53, skipping insertion in model container [2021-11-12 23:23:53,744 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:23:53" (3/3) ... [2021-11-12 23:23:53,746 INFO L111 eAbstractionObserver]: Analyzing ICFG freire1_valuebound5.c [2021-11-12 23:23:53,751 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-12 23:23:53,752 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-12 23:23:53,853 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-12 23:23:53,861 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-12 23:23:53,861 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-12 23:23:53,878 INFO L276 IsEmpty]: Start isEmpty. Operand has 13 states, 8 states have (on average 1.5) internal successors, (12), 9 states have internal predecessors, (12), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-12 23:23:53,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-12 23:23:53,883 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:23:53,883 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-12 23:23:53,884 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:23:53,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:23:53,890 INFO L85 PathProgramCache]: Analyzing trace with hash -1843522412, now seen corresponding path program 1 times [2021-11-12 23:23:53,899 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:23:53,900 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818273787] [2021-11-12 23:23:53,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:23:53,901 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:23:54,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-12 23:23:54,091 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-12 23:23:54,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-12 23:23:54,172 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-12 23:23:54,175 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-12 23:23:54,177 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-12 23:23:54,199 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-12 23:23:54,205 INFO L732 BasicCegarLoop]: Path program histogram: [1] [2021-11-12 23:23:54,209 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-12 23:23:54,222 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.NullPointerException at de.uni_freiburg.informatik.ultimate.boogie.procedureinliner.backtranslation.InlinerBacktranslator.computeCurrectProc(InlinerBacktranslator.java:230) at de.uni_freiburg.informatik.ultimate.boogie.procedureinliner.backtranslation.InlinerBacktranslator.translateProgramExecution(InlinerBacktranslator.java:203) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:216) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:225) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:225) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:206) at de.uni_freiburg.informatik.ultimate.core.lib.results.UnprovableResult.getProgramExecutionAsString(UnprovableResult.java:132) at de.uni_freiburg.informatik.ultimate.core.lib.results.UnprovableResult.getLongDescription(UnprovableResult.java:125) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ResultService.reportResult(ResultService.java:86) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResultReporter.reportResult(CegarLoopResultReporter.java:141) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.reportLocationResults(TraceAbstractionStarter.java:586) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:181) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-12 23:23:54,232 INFO L158 Benchmark]: Toolchain (without parser) took 1169.90ms. Allocated memory was 94.4MB in the beginning and 115.3MB in the end (delta: 21.0MB). Free memory was 62.1MB in the beginning and 91.6MB in the end (delta: -29.5MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 23:23:54,233 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 94.4MB. Free memory was 49.0MB in the beginning and 49.0MB in the end (delta: 42.7kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 23:23:54,234 INFO L158 Benchmark]: CACSL2BoogieTranslator took 297.68ms. Allocated memory is still 94.4MB. Free memory was 62.0MB in the beginning and 68.7MB in the end (delta: -6.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-12 23:23:54,235 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.81ms. Allocated memory is still 94.4MB. Free memory was 68.7MB in the beginning and 67.4MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 23:23:54,237 INFO L158 Benchmark]: Boogie Preprocessor took 27.08ms. Allocated memory is still 94.4MB. Free memory was 67.4MB in the beginning and 66.3MB in the end (delta: 1.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-12 23:23:54,238 INFO L158 Benchmark]: RCFGBuilder took 308.81ms. Allocated memory is still 94.4MB. Free memory was 66.0MB in the beginning and 56.1MB in the end (delta: 9.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-12 23:23:54,243 INFO L158 Benchmark]: TraceAbstraction took 490.28ms. Allocated memory was 94.4MB in the beginning and 115.3MB in the end (delta: 21.0MB). Free memory was 55.5MB in the beginning and 91.6MB in the end (delta: -36.1MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 23:23:54,251 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 94.4MB. Free memory was 49.0MB in the beginning and 49.0MB in the end (delta: 42.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 297.68ms. Allocated memory is still 94.4MB. Free memory was 62.0MB in the beginning and 68.7MB in the end (delta: -6.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 36.81ms. Allocated memory is still 94.4MB. Free memory was 68.7MB in the beginning and 67.4MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 27.08ms. Allocated memory is still 94.4MB. Free memory was 67.4MB in the beginning and 66.3MB in the end (delta: 1.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 308.81ms. Allocated memory is still 94.4MB. Free memory was 66.0MB in the beginning and 56.1MB in the end (delta: 9.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 490.28ms. Allocated memory was 94.4MB in the beginning and 115.3MB in the end (delta: 21.0MB). Free memory was 55.5MB in the beginning and 91.6MB in the end (delta: -36.1MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - ExceptionOrErrorResult: NullPointerException: null de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: NullPointerException: null: de.uni_freiburg.informatik.ultimate.boogie.procedureinliner.backtranslation.InlinerBacktranslator.computeCurrectProc(InlinerBacktranslator.java:230) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-11-12 23:23:54,307 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a94e3c0-da37-42c9-883e-1d3fec75b6fc/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a94e3c0-da37-42c9-883e-1d3fec75b6fc/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a94e3c0-da37-42c9-883e-1d3fec75b6fc/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a94e3c0-da37-42c9-883e-1d3fec75b6fc/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a94e3c0-da37-42c9-883e-1d3fec75b6fc/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/freire1_valuebound5.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a94e3c0-da37-42c9-883e-1d3fec75b6fc/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a94e3c0-da37-42c9-883e-1d3fec75b6fc/bin/utaipan-vmNK8stdcF --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6437fdc3c0b95eb5fb3a7e28606efb50e2431074b1de5f5cf4c718827adac36d --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 23:23:56,810 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 23:23:56,813 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 23:23:56,868 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 23:23:56,869 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 23:23:56,875 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 23:23:56,877 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 23:23:56,887 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 23:23:56,891 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 23:23:56,899 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 23:23:56,900 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 23:23:56,902 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 23:23:56,902 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 23:23:56,903 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 23:23:56,905 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 23:23:56,906 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 23:23:56,907 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 23:23:56,908 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 23:23:56,916 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 23:23:56,927 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 23:23:56,929 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 23:23:56,933 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 23:23:56,941 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 23:23:56,942 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 23:23:56,946 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 23:23:56,946 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 23:23:56,947 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 23:23:56,948 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 23:23:56,948 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 23:23:56,950 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 23:23:56,950 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 23:23:56,951 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 23:23:56,952 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 23:23:56,955 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 23:23:56,958 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 23:23:56,958 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 23:23:56,960 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 23:23:56,960 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 23:23:56,960 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 23:23:56,962 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 23:23:56,963 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 23:23:56,969 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a94e3c0-da37-42c9-883e-1d3fec75b6fc/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-12 23:23:57,019 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 23:23:57,019 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 23:23:57,020 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 23:23:57,021 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 23:23:57,021 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 23:23:57,021 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 23:23:57,021 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 23:23:57,022 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 23:23:57,023 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 23:23:57,023 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 23:23:57,025 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 23:23:57,026 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-12 23:23:57,026 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-12 23:23:57,027 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 23:23:57,027 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-12 23:23:57,027 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 23:23:57,027 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-12 23:23:57,027 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 23:23:57,028 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-12 23:23:57,028 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-12 23:23:57,028 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-12 23:23:57,028 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-12 23:23:57,028 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 23:23:57,029 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-12 23:23:57,029 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 23:23:57,029 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-12 23:23:57,029 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 23:23:57,030 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:23:57,030 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 23:23:57,030 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 23:23:57,030 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-12 23:23:57,031 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-12 23:23:57,031 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-12 23:23:57,031 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-12 23:23:57,032 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 23:23:57,032 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 23:23:57,032 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a94e3c0-da37-42c9-883e-1d3fec75b6fc/bin/utaipan-vmNK8stdcF/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a94e3c0-da37-42c9-883e-1d3fec75b6fc/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6437fdc3c0b95eb5fb3a7e28606efb50e2431074b1de5f5cf4c718827adac36d [2021-11-12 23:23:57,424 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 23:23:57,458 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 23:23:57,462 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 23:23:57,464 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 23:23:57,465 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 23:23:57,466 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a94e3c0-da37-42c9-883e-1d3fec75b6fc/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/nla-digbench-scaling/freire1_valuebound5.c [2021-11-12 23:23:57,537 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a94e3c0-da37-42c9-883e-1d3fec75b6fc/bin/utaipan-vmNK8stdcF/data/f35a12fe6/d3212792a0754c2a92ab9bdb6ef18aa3/FLAG11c37cd07 [2021-11-12 23:23:58,061 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 23:23:58,062 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a94e3c0-da37-42c9-883e-1d3fec75b6fc/sv-benchmarks/c/nla-digbench-scaling/freire1_valuebound5.c [2021-11-12 23:23:58,070 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a94e3c0-da37-42c9-883e-1d3fec75b6fc/bin/utaipan-vmNK8stdcF/data/f35a12fe6/d3212792a0754c2a92ab9bdb6ef18aa3/FLAG11c37cd07 [2021-11-12 23:23:58,426 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a94e3c0-da37-42c9-883e-1d3fec75b6fc/bin/utaipan-vmNK8stdcF/data/f35a12fe6/d3212792a0754c2a92ab9bdb6ef18aa3 [2021-11-12 23:23:58,428 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 23:23:58,430 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 23:23:58,435 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 23:23:58,436 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 23:23:58,439 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 23:23:58,440 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:23:58" (1/1) ... [2021-11-12 23:23:58,443 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b8534c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:23:58, skipping insertion in model container [2021-11-12 23:23:58,444 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:23:58" (1/1) ... [2021-11-12 23:23:58,453 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 23:23:58,472 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 23:23:58,660 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a94e3c0-da37-42c9-883e-1d3fec75b6fc/sv-benchmarks/c/nla-digbench-scaling/freire1_valuebound5.c[712,725] [2021-11-12 23:23:58,675 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:23:58,688 INFO L203 MainTranslator]: Completed pre-run [2021-11-12 23:23:58,700 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a94e3c0-da37-42c9-883e-1d3fec75b6fc/sv-benchmarks/c/nla-digbench-scaling/freire1_valuebound5.c[712,725] [2021-11-12 23:23:58,706 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:23:58,721 INFO L208 MainTranslator]: Completed translation [2021-11-12 23:23:58,722 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:23:58 WrapperNode [2021-11-12 23:23:58,722 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 23:23:58,724 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-12 23:23:58,724 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-12 23:23:58,724 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-12 23:23:58,731 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:23:58" (1/1) ... [2021-11-12 23:23:58,741 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:23:58" (1/1) ... [2021-11-12 23:23:58,760 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-12 23:23:58,761 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-12 23:23:58,762 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-12 23:23:58,762 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-12 23:23:58,770 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:23:58" (1/1) ... [2021-11-12 23:23:58,770 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:23:58" (1/1) ... [2021-11-12 23:23:58,774 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:23:58" (1/1) ... [2021-11-12 23:23:58,774 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:23:58" (1/1) ... [2021-11-12 23:23:58,781 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:23:58" (1/1) ... [2021-11-12 23:23:58,785 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:23:58" (1/1) ... [2021-11-12 23:23:58,787 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:23:58" (1/1) ... [2021-11-12 23:23:58,790 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-12 23:23:58,792 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-12 23:23:58,792 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-12 23:23:58,792 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-12 23:23:58,793 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:23:58" (1/1) ... [2021-11-12 23:23:58,800 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:23:58,812 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a94e3c0-da37-42c9-883e-1d3fec75b6fc/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 23:23:58,827 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a94e3c0-da37-42c9-883e-1d3fec75b6fc/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-12 23:23:58,854 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a94e3c0-da37-42c9-883e-1d3fec75b6fc/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-12 23:23:58,876 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-12 23:23:58,876 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-12 23:23:58,876 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-12 23:23:58,876 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-12 23:23:58,877 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-12 23:23:58,877 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-12 23:24:00,734 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-12 23:24:00,735 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-12 23:24:00,737 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:24:00 BoogieIcfgContainer [2021-11-12 23:24:00,737 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-12 23:24:00,739 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-12 23:24:00,740 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-12 23:24:00,743 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-12 23:24:00,744 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 11:23:58" (1/3) ... [2021-11-12 23:24:00,745 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54546c94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 11:24:00, skipping insertion in model container [2021-11-12 23:24:00,745 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:23:58" (2/3) ... [2021-11-12 23:24:00,746 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54546c94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 11:24:00, skipping insertion in model container [2021-11-12 23:24:00,746 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:24:00" (3/3) ... [2021-11-12 23:24:00,747 INFO L111 eAbstractionObserver]: Analyzing ICFG freire1_valuebound5.c [2021-11-12 23:24:00,754 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-12 23:24:00,754 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-12 23:24:00,808 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-12 23:24:00,816 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-12 23:24:00,817 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-12 23:24:00,835 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 14 states have internal predecessors, (19), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-12 23:24:00,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-12 23:24:00,840 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:24:00,840 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:24:00,841 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:24:00,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:24:00,847 INFO L85 PathProgramCache]: Analyzing trace with hash -589467074, now seen corresponding path program 1 times [2021-11-12 23:24:00,860 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:24:00,860 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1384281489] [2021-11-12 23:24:00,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:24:00,862 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:24:00,862 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a94e3c0-da37-42c9-883e-1d3fec75b6fc/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:24:00,874 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a94e3c0-da37-42c9-883e-1d3fec75b6fc/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:24:00,881 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a94e3c0-da37-42c9-883e-1d3fec75b6fc/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-12 23:24:01,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:24:01,353 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-12 23:24:01,357 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:24:01,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:24:01,412 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:24:01,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:24:01,449 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:24:01,449 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1384281489] [2021-11-12 23:24:01,450 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1384281489] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:24:01,450 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:24:01,450 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-12 23:24:01,452 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536794242] [2021-11-12 23:24:01,453 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:24:01,457 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-12 23:24:01,458 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:24:01,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-12 23:24:01,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-12 23:24:01,492 INFO L87 Difference]: Start difference. First operand has 18 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 14 states have internal predecessors, (19), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:24:01,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:24:01,513 INFO L93 Difference]: Finished difference Result 33 states and 44 transitions. [2021-11-12 23:24:01,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-12 23:24:01,516 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-11-12 23:24:01,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:24:01,524 INFO L225 Difference]: With dead ends: 33 [2021-11-12 23:24:01,524 INFO L226 Difference]: Without dead ends: 14 [2021-11-12 23:24:01,528 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-12 23:24:01,536 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.71ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-12 23:24:01,538 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.71ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-12 23:24:01,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2021-11-12 23:24:01,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2021-11-12 23:24:01,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 10 states have (on average 1.2) internal successors, (12), 11 states have internal predecessors, (12), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-12 23:24:01,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2021-11-12 23:24:01,574 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 9 [2021-11-12 23:24:01,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:24:01,575 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2021-11-12 23:24:01,575 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:24:01,576 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2021-11-12 23:24:01,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-12 23:24:01,576 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:24:01,576 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:24:01,602 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a94e3c0-da37-42c9-883e-1d3fec75b6fc/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-11-12 23:24:01,798 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a94e3c0-da37-42c9-883e-1d3fec75b6fc/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:24:01,798 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:24:01,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:24:01,800 INFO L85 PathProgramCache]: Analyzing trace with hash 1187327748, now seen corresponding path program 1 times [2021-11-12 23:24:01,800 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:24:01,801 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [165630518] [2021-11-12 23:24:01,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:24:01,801 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:24:01,801 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a94e3c0-da37-42c9-883e-1d3fec75b6fc/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:24:01,803 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a94e3c0-da37-42c9-883e-1d3fec75b6fc/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:24:01,809 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a94e3c0-da37-42c9-883e-1d3fec75b6fc/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-12 23:24:03,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:24:03,176 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-12 23:24:03,179 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:24:59,670 WARN L860 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_1| (_ FloatingPoint 11 53))) (let ((.cse0 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))) (and (fp.leq |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_1| ((_ to_fp 11 53) roundNearestTiesToEven (_ bv5 32))) (fp.geq |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_1| .cse0) (let ((.cse1 (= ((_ fp.to_sbv 32) roundTowardZero (fp.add roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.sub roundNearestTiesToEven .cse0 |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_1|) .cse0) (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (_ bv2 32)) (fp.div roundNearestTiesToEven |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_1| ((_ to_fp 11 53) roundNearestTiesToEven 2.0))))) (_ bv0 32)))) (or (and .cse1 (= (_ bv1 32) |c___VERIFIER_assert_#in~cond|)) (and (not .cse1) (= |c___VERIFIER_assert_#in~cond| (_ bv0 32)))))))) is different from true [2021-11-12 23:25:53,219 WARN L838 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_1| (_ FloatingPoint 11 53))) (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))) (and (let ((.cse0 (= ((_ fp.to_sbv 32) roundTowardZero (fp.add roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.sub roundNearestTiesToEven .cse1 |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_1|) .cse1) (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (_ bv2 32)) (fp.div roundNearestTiesToEven |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_1| ((_ to_fp 11 53) roundNearestTiesToEven 2.0))))) (_ bv0 32)))) (or (and (not .cse0) (= c___VERIFIER_assert_~cond (_ bv0 32))) (and .cse0 (= c___VERIFIER_assert_~cond (_ bv1 32))))) (fp.leq |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_1| ((_ to_fp 11 53) roundNearestTiesToEven (_ bv5 32))) (fp.geq |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_1| .cse1)))) is different from false [2021-11-12 23:25:55,258 WARN L860 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_1| (_ FloatingPoint 11 53))) (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))) (and (let ((.cse0 (= ((_ fp.to_sbv 32) roundTowardZero (fp.add roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.sub roundNearestTiesToEven .cse1 |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_1|) .cse1) (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (_ bv2 32)) (fp.div roundNearestTiesToEven |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_1| ((_ to_fp 11 53) roundNearestTiesToEven 2.0))))) (_ bv0 32)))) (or (and (not .cse0) (= c___VERIFIER_assert_~cond (_ bv0 32))) (and .cse0 (= c___VERIFIER_assert_~cond (_ bv1 32))))) (fp.leq |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_1| ((_ to_fp 11 53) roundNearestTiesToEven (_ bv5 32))) (fp.geq |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_1| .cse1)))) is different from true [2021-11-12 23:26:10,885 WARN L838 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_1| (_ FloatingPoint 11 53))) (let ((.cse0 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))) (and (not (= ((_ fp.to_sbv 32) roundTowardZero (fp.add roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.sub roundNearestTiesToEven .cse0 |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_1|) .cse0) (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (_ bv2 32)) (fp.div roundNearestTiesToEven |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_1| ((_ to_fp 11 53) roundNearestTiesToEven 2.0))))) (_ bv0 32))) (fp.leq |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_1| ((_ to_fp 11 53) roundNearestTiesToEven (_ bv5 32))) (fp.geq |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_1| .cse0)))) is different from false [2021-11-12 23:26:12,924 WARN L860 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_1| (_ FloatingPoint 11 53))) (let ((.cse0 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))) (and (not (= ((_ fp.to_sbv 32) roundTowardZero (fp.add roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.sub roundNearestTiesToEven .cse0 |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_1|) .cse0) (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (_ bv2 32)) (fp.div roundNearestTiesToEven |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_1| ((_ to_fp 11 53) roundNearestTiesToEven 2.0))))) (_ bv0 32))) (fp.leq |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_1| ((_ to_fp 11 53) roundNearestTiesToEven (_ bv5 32))) (fp.geq |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_1| .cse0)))) is different from true [2021-11-12 23:26:12,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:26:12,925 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:26:21,238 WARN L838 $PredicateComparison]: unable to prove that (= ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (bvmul |c_ULTIMATE.start_main_~r~0#1| |c_ULTIMATE.start_main_~r~0#1|)) |c_ULTIMATE.start_main_~a~0#1|) ((_ to_fp 11 53) c_currentRoundingMode |c_ULTIMATE.start_main_~r~0#1|)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) |c_ULTIMATE.start_main_~x~0#1|))) (_ bv0 32)) is different from false [2021-11-12 23:26:23,298 WARN L860 $PredicateComparison]: unable to prove that (= ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (bvmul |c_ULTIMATE.start_main_~r~0#1| |c_ULTIMATE.start_main_~r~0#1|)) |c_ULTIMATE.start_main_~a~0#1|) ((_ to_fp 11 53) c_currentRoundingMode |c_ULTIMATE.start_main_~r~0#1|)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) |c_ULTIMATE.start_main_~x~0#1|))) (_ bv0 32)) is different from true [2021-11-12 23:26:31,896 WARN L838 $PredicateComparison]: unable to prove that (= (_ bv0 32) ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))) (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode .cse0 |c_ULTIMATE.start_main_~a~0#1|) .cse0)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) (fp.div c_currentRoundingMode |c_ULTIMATE.start_main_~a~0#1| ((_ to_fp 11 53) c_currentRoundingMode 2.0)))))) is different from false [2021-11-12 23:26:33,948 WARN L860 $PredicateComparison]: unable to prove that (= (_ bv0 32) ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))) (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode .cse0 |c_ULTIMATE.start_main_~a~0#1|) .cse0)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) (fp.div c_currentRoundingMode |c_ULTIMATE.start_main_~a~0#1| ((_ to_fp 11 53) c_currentRoundingMode 2.0)))))) is different from true [2021-11-12 23:26:42,622 WARN L838 $PredicateComparison]: unable to prove that (or (= |c_ULTIMATE.start_assume_abort_if_not_~cond#1| (_ bv0 32)) (= (_ bv0 32) ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))) (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode .cse0 |c_ULTIMATE.start_main_~a~0#1|) .cse0)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) (fp.div c_currentRoundingMode |c_ULTIMATE.start_main_~a~0#1| ((_ to_fp 11 53) c_currentRoundingMode 2.0))))))) is different from false [2021-11-12 23:26:44,670 WARN L860 $PredicateComparison]: unable to prove that (or (= |c_ULTIMATE.start_assume_abort_if_not_~cond#1| (_ bv0 32)) (= (_ bv0 32) ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))) (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode .cse0 |c_ULTIMATE.start_main_~a~0#1|) .cse0)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) (fp.div c_currentRoundingMode |c_ULTIMATE.start_main_~a~0#1| ((_ to_fp 11 53) c_currentRoundingMode 2.0))))))) is different from true [2021-11-12 23:26:59,248 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~a~0#1_9| (_ FloatingPoint 11 53))) (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))) (or (not (fp.leq |v_ULTIMATE.start_main_~a~0#1_9| ((_ to_fp 11 53) c_currentRoundingMode (_ bv5 32)))) (not (fp.geq |v_ULTIMATE.start_main_~a~0#1_9| .cse0)) (= ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode .cse0 |v_ULTIMATE.start_main_~a~0#1_9|) .cse0) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) (fp.div c_currentRoundingMode |v_ULTIMATE.start_main_~a~0#1_9| ((_ to_fp 11 53) c_currentRoundingMode 2.0))))) (_ bv0 32))))) is different from false [2021-11-12 23:27:01,301 WARN L860 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~a~0#1_9| (_ FloatingPoint 11 53))) (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))) (or (not (fp.leq |v_ULTIMATE.start_main_~a~0#1_9| ((_ to_fp 11 53) c_currentRoundingMode (_ bv5 32)))) (not (fp.geq |v_ULTIMATE.start_main_~a~0#1_9| .cse0)) (= ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode .cse0 |v_ULTIMATE.start_main_~a~0#1_9|) .cse0) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) (fp.div c_currentRoundingMode |v_ULTIMATE.start_main_~a~0#1_9| ((_ to_fp 11 53) c_currentRoundingMode 2.0))))) (_ bv0 32))))) is different from true [2021-11-12 23:27:01,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:27:01,302 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:27:01,302 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [165630518] [2021-11-12 23:27:01,303 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [165630518] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:27:01,303 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:27:01,303 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 14 [2021-11-12 23:27:01,303 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266947604] [2021-11-12 23:27:01,303 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:27:01,305 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-12 23:27:01,305 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:27:01,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-12 23:27:01,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=40, Unknown=13, NotChecked=126, Total=210 [2021-11-12 23:27:01,307 INFO L87 Difference]: Start difference. First operand 14 states and 15 transitions. Second operand has 15 states, 15 states have (on average 1.0666666666666667) internal successors, (16), 12 states have internal predecessors, (16), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:27:03,374 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((|v_ULTIMATE.start_main_~a~0#1_9| (_ FloatingPoint 11 53))) (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))) (or (not (fp.leq |v_ULTIMATE.start_main_~a~0#1_9| ((_ to_fp 11 53) c_currentRoundingMode (_ bv5 32)))) (not (fp.geq |v_ULTIMATE.start_main_~a~0#1_9| .cse0)) (= ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode .cse0 |v_ULTIMATE.start_main_~a~0#1_9|) .cse0) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) (fp.div c_currentRoundingMode |v_ULTIMATE.start_main_~a~0#1_9| ((_ to_fp 11 53) c_currentRoundingMode 2.0))))) (_ bv0 32))))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false [2021-11-12 23:27:05,427 WARN L860 $PredicateComparison]: unable to prove that (and (forall ((|v_ULTIMATE.start_main_~a~0#1_9| (_ FloatingPoint 11 53))) (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))) (or (not (fp.leq |v_ULTIMATE.start_main_~a~0#1_9| ((_ to_fp 11 53) c_currentRoundingMode (_ bv5 32)))) (not (fp.geq |v_ULTIMATE.start_main_~a~0#1_9| .cse0)) (= ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode .cse0 |v_ULTIMATE.start_main_~a~0#1_9|) .cse0) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) (fp.div c_currentRoundingMode |v_ULTIMATE.start_main_~a~0#1_9| ((_ to_fp 11 53) c_currentRoundingMode 2.0))))) (_ bv0 32))))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2021-11-12 23:27:07,493 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (= |c_ULTIMATE.start_assume_abort_if_not_~cond#1| (_ bv0 32))) (.cse3 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))) (and (let ((.cse2 (fp.geq |c_ULTIMATE.start_main_~a~0#1| .cse3)) (.cse1 (fp.leq |c_ULTIMATE.start_main_~a~0#1| ((_ to_fp 11 53) c_currentRoundingMode (_ bv5 32))))) (or (and .cse0 (or (not .cse1) (not .cse2))) (and .cse2 (= |c_ULTIMATE.start_assume_abort_if_not_~cond#1| (_ bv1 32)) .cse1))) (or .cse0 (= (_ bv0 32) ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode .cse3 |c_ULTIMATE.start_main_~a~0#1|) .cse3) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) (fp.div c_currentRoundingMode |c_ULTIMATE.start_main_~a~0#1| ((_ to_fp 11 53) c_currentRoundingMode 2.0))))))) (= c_currentRoundingMode roundNearestTiesToEven))) is different from false [2021-11-12 23:27:09,551 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 (= |c_ULTIMATE.start_assume_abort_if_not_~cond#1| (_ bv0 32))) (.cse3 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))) (and (let ((.cse2 (fp.geq |c_ULTIMATE.start_main_~a~0#1| .cse3)) (.cse1 (fp.leq |c_ULTIMATE.start_main_~a~0#1| ((_ to_fp 11 53) c_currentRoundingMode (_ bv5 32))))) (or (and .cse0 (or (not .cse1) (not .cse2))) (and .cse2 (= |c_ULTIMATE.start_assume_abort_if_not_~cond#1| (_ bv1 32)) .cse1))) (or .cse0 (= (_ bv0 32) ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode .cse3 |c_ULTIMATE.start_main_~a~0#1|) .cse3) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) (fp.div c_currentRoundingMode |c_ULTIMATE.start_main_~a~0#1| ((_ to_fp 11 53) c_currentRoundingMode 2.0))))))) (= c_currentRoundingMode roundNearestTiesToEven))) is different from true [2021-11-12 23:27:12,082 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))) (and (fp.geq |c_ULTIMATE.start_main_~a~0#1| .cse0) (fp.leq |c_ULTIMATE.start_main_~a~0#1| ((_ to_fp 11 53) c_currentRoundingMode (_ bv5 32))) (= c_currentRoundingMode roundNearestTiesToEven) (= (_ bv0 32) ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode .cse0 |c_ULTIMATE.start_main_~a~0#1|) .cse0) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) (fp.div c_currentRoundingMode |c_ULTIMATE.start_main_~a~0#1| ((_ to_fp 11 53) c_currentRoundingMode 2.0)))))))) is different from true [2021-11-12 23:27:14,136 WARN L838 $PredicateComparison]: unable to prove that (and (= ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (bvmul |c_ULTIMATE.start_main_~r~0#1| |c_ULTIMATE.start_main_~r~0#1|)) |c_ULTIMATE.start_main_~a~0#1|) ((_ to_fp 11 53) c_currentRoundingMode |c_ULTIMATE.start_main_~r~0#1|)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) |c_ULTIMATE.start_main_~x~0#1|))) (_ bv0 32)) (= |c_ULTIMATE.start_main_~r~0#1| (_ bv0 32)) (fp.geq |c_ULTIMATE.start_main_~a~0#1| ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))) (= |c_ULTIMATE.start_main_~x~0#1| (fp.div c_currentRoundingMode |c_ULTIMATE.start_main_~a~0#1| ((_ to_fp 11 53) c_currentRoundingMode 2.0))) (fp.leq |c_ULTIMATE.start_main_~a~0#1| ((_ to_fp 11 53) c_currentRoundingMode (_ bv5 32))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false [2021-11-12 23:27:16,212 WARN L860 $PredicateComparison]: unable to prove that (and (= ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (bvmul |c_ULTIMATE.start_main_~r~0#1| |c_ULTIMATE.start_main_~r~0#1|)) |c_ULTIMATE.start_main_~a~0#1|) ((_ to_fp 11 53) c_currentRoundingMode |c_ULTIMATE.start_main_~r~0#1|)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) |c_ULTIMATE.start_main_~x~0#1|))) (_ bv0 32)) (= |c_ULTIMATE.start_main_~r~0#1| (_ bv0 32)) (fp.geq |c_ULTIMATE.start_main_~a~0#1| ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))) (= |c_ULTIMATE.start_main_~x~0#1| (fp.div c_currentRoundingMode |c_ULTIMATE.start_main_~a~0#1| ((_ to_fp 11 53) c_currentRoundingMode 2.0))) (fp.leq |c_ULTIMATE.start_main_~a~0#1| ((_ to_fp 11 53) c_currentRoundingMode (_ bv5 32))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2021-11-12 23:27:33,237 WARN L227 SmtUtils]: Spent 6.60s on a formula simplification that was a NOOP. DAG size: 32 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-12 23:27:47,826 WARN L227 SmtUtils]: Spent 7.62s on a formula simplification that was a NOOP. DAG size: 32 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-12 23:27:51,124 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-12 23:27:51,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:27:51,189 INFO L93 Difference]: Finished difference Result 20 states and 22 transitions. [2021-11-12 23:27:51,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-12 23:27:51,191 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.0666666666666667) internal successors, (16), 12 states have internal predecessors, (16), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-11-12 23:27:51,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:27:51,193 INFO L225 Difference]: With dead ends: 20 [2021-11-12 23:27:51,194 INFO L226 Difference]: Without dead ends: 18 [2021-11-12 23:27:51,195 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 11 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 81.1s TimeCoverageRelationStatistics Valid=45, Invalid=62, Unknown=27, NotChecked=286, Total=420 [2021-11-12 23:27:51,197 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 0 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3284.21ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.33ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 63 IncrementalHoareTripleChecker+Unchecked, 3374.69ms IncrementalHoareTripleChecker+Time [2021-11-12 23:27:51,198 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 32 Invalid, 71 Unknown, 0 Unchecked, 2.33ms Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 1 Unknown, 63 Unchecked, 3374.69ms Time] [2021-11-12 23:27:51,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2021-11-12 23:27:51,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2021-11-12 23:27:51,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 14 states have internal predecessors, (15), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-12 23:27:51,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2021-11-12 23:27:51,206 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 9 [2021-11-12 23:27:51,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:27:51,207 INFO L470 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2021-11-12 23:27:51,207 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 1.0666666666666667) internal successors, (16), 12 states have internal predecessors, (16), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:27:51,207 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2021-11-12 23:27:51,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-12 23:27:51,209 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:27:51,209 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:27:51,242 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a94e3c0-da37-42c9-883e-1d3fec75b6fc/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-12 23:27:51,426 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a94e3c0-da37-42c9-883e-1d3fec75b6fc/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:27:51,426 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:27:51,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:27:51,427 INFO L85 PathProgramCache]: Analyzing trace with hash -713464030, now seen corresponding path program 1 times [2021-11-12 23:27:51,427 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:27:51,428 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1845865446] [2021-11-12 23:27:51,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:27:51,428 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:27:51,428 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a94e3c0-da37-42c9-883e-1d3fec75b6fc/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:27:51,429 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a94e3c0-da37-42c9-883e-1d3fec75b6fc/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:27:51,431 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a94e3c0-da37-42c9-883e-1d3fec75b6fc/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-12 23:27:51,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:27:51,832 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-12 23:27:51,833 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:27:58,095 WARN L838 $PredicateComparison]: unable to prove that (= ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (bvmul |c_ULTIMATE.start_main_~r~0#1| |c_ULTIMATE.start_main_~r~0#1|)) |c_ULTIMATE.start_main_~a~0#1|) ((_ to_fp 11 53) c_currentRoundingMode |c_ULTIMATE.start_main_~r~0#1|)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) |c_ULTIMATE.start_main_~x~0#1|))) (_ bv0 32)) is different from false [2021-11-12 23:28:00,152 WARN L860 $PredicateComparison]: unable to prove that (= ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (bvmul |c_ULTIMATE.start_main_~r~0#1| |c_ULTIMATE.start_main_~r~0#1|)) |c_ULTIMATE.start_main_~a~0#1|) ((_ to_fp 11 53) c_currentRoundingMode |c_ULTIMATE.start_main_~r~0#1|)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) |c_ULTIMATE.start_main_~x~0#1|))) (_ bv0 32)) is different from true [2021-11-12 23:28:12,561 WARN L838 $PredicateComparison]: unable to prove that (and (exists ((|v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_2| (_ FloatingPoint 11 53)) (|v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_2| (_ BitVec 32)) (|v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_2| (_ FloatingPoint 11 53)) (currentRoundingMode RoundingMode)) (= ((_ fp.to_sbv 32) roundTowardZero (fp.add currentRoundingMode (fp.sub currentRoundingMode (fp.sub currentRoundingMode ((_ to_fp 11 53) currentRoundingMode (bvmul |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_2| |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_2|)) |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_2|) ((_ to_fp 11 53) currentRoundingMode |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_2|)) (fp.mul currentRoundingMode ((_ to_fp 11 53) currentRoundingMode (_ bv2 32)) |v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_2|))) (_ bv0 32))) (= (_ bv1 32) |c___VERIFIER_assert_#in~cond|)) is different from false [2021-11-12 23:28:20,877 WARN L838 $PredicateComparison]: unable to prove that (and (exists ((|v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_2| (_ FloatingPoint 11 53)) (|v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_2| (_ BitVec 32)) (|v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_2| (_ FloatingPoint 11 53)) (currentRoundingMode RoundingMode)) (= ((_ fp.to_sbv 32) roundTowardZero (fp.add currentRoundingMode (fp.sub currentRoundingMode (fp.sub currentRoundingMode ((_ to_fp 11 53) currentRoundingMode (bvmul |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_2| |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_2|)) |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_2|) ((_ to_fp 11 53) currentRoundingMode |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_2|)) (fp.mul currentRoundingMode ((_ to_fp 11 53) currentRoundingMode (_ bv2 32)) |v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_2|))) (_ bv0 32))) (= c___VERIFIER_assert_~cond (_ bv1 32))) is different from false [2021-11-12 23:28:20,887 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2021-11-12 23:28:20,887 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:28:45,930 WARN L227 SmtUtils]: Spent 16.69s on a formula simplification that was a NOOP. DAG size: 26 (called from [L 231] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2021-11-12 23:29:02,601 WARN L227 SmtUtils]: Spent 16.67s on a formula simplification that was a NOOP. DAG size: 26 (called from [L 268] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2021-11-12 23:29:10,899 WARN L860 $PredicateComparison]: unable to prove that (or (forall ((|v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_3| (_ FloatingPoint 11 53)) (|v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_3| (_ BitVec 32)) (|v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_3| (_ FloatingPoint 11 53)) (currentRoundingMode RoundingMode)) (= ((_ fp.to_sbv 32) roundTowardZero (fp.add currentRoundingMode (fp.sub currentRoundingMode (fp.sub currentRoundingMode ((_ to_fp 11 53) currentRoundingMode (bvmul |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_3| |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_3|)) |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_3|) ((_ to_fp 11 53) currentRoundingMode |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_3|)) (fp.mul currentRoundingMode ((_ to_fp 11 53) currentRoundingMode (_ bv2 32)) |v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_3|))) (_ bv0 32))) (not (= |c___VERIFIER_assert_#in~cond| (_ bv0 32)))) is different from true [2021-11-12 23:29:25,416 WARN L860 $PredicateComparison]: unable to prove that (or (= c___VERIFIER_assert_~cond (_ bv0 32)) (forall ((|v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_3| (_ FloatingPoint 11 53)) (|v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_3| (_ BitVec 32)) (|v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_3| (_ FloatingPoint 11 53)) (currentRoundingMode RoundingMode)) (= ((_ fp.to_sbv 32) roundTowardZero (fp.add currentRoundingMode (fp.sub currentRoundingMode (fp.sub currentRoundingMode ((_ to_fp 11 53) currentRoundingMode (bvmul |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_3| |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_3|)) |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_3|) ((_ to_fp 11 53) currentRoundingMode |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_3|)) (fp.mul currentRoundingMode ((_ to_fp 11 53) currentRoundingMode (_ bv2 32)) |v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_3|))) (_ bv0 32))) (not (= |c___VERIFIER_assert_#in~cond| (_ bv0 32)))) is different from true [2021-11-12 23:29:25,431 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2021-11-12 23:29:25,431 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:29:25,432 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1845865446] [2021-11-12 23:29:25,432 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1845865446] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:29:25,432 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1392533796] [2021-11-12 23:29:25,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:29:25,433 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-12 23:29:25,433 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a94e3c0-da37-42c9-883e-1d3fec75b6fc/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-12 23:29:25,445 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a94e3c0-da37-42c9-883e-1d3fec75b6fc/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-12 23:29:25,470 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a94e3c0-da37-42c9-883e-1d3fec75b6fc/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2021-11-12 23:29:25,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:29:25,646 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-12 23:29:25,647 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:29:42,239 WARN L838 $PredicateComparison]: unable to prove that (and (exists ((|v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_4| (_ BitVec 32)) (|v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_4| (_ FloatingPoint 11 53)) (|v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_4| (_ FloatingPoint 11 53)) (currentRoundingMode RoundingMode)) (= ((_ fp.to_sbv 32) roundTowardZero (fp.add currentRoundingMode (fp.sub currentRoundingMode (fp.sub currentRoundingMode ((_ to_fp 11 53) currentRoundingMode (bvmul |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_4| |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_4|)) |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_4|) ((_ to_fp 11 53) currentRoundingMode |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_4|)) (fp.mul currentRoundingMode ((_ to_fp 11 53) currentRoundingMode (_ bv2 32)) |v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_4|))) (_ bv0 32))) (= (_ bv1 32) |c___VERIFIER_assert_#in~cond|)) is different from false [2021-11-12 23:29:50,538 WARN L838 $PredicateComparison]: unable to prove that (and (exists ((|v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_4| (_ BitVec 32)) (|v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_4| (_ FloatingPoint 11 53)) (|v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_4| (_ FloatingPoint 11 53)) (currentRoundingMode RoundingMode)) (= ((_ fp.to_sbv 32) roundTowardZero (fp.add currentRoundingMode (fp.sub currentRoundingMode (fp.sub currentRoundingMode ((_ to_fp 11 53) currentRoundingMode (bvmul |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_4| |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_4|)) |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_4|) ((_ to_fp 11 53) currentRoundingMode |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_4|)) (fp.mul currentRoundingMode ((_ to_fp 11 53) currentRoundingMode (_ bv2 32)) |v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_4|))) (_ bv0 32))) (= c___VERIFIER_assert_~cond (_ bv1 32))) is different from false [2021-11-12 23:29:50,548 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2021-11-12 23:29:50,548 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:30:15,593 WARN L227 SmtUtils]: Spent 16.70s on a formula simplification that was a NOOP. DAG size: 26 (called from [L 231] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2021-11-12 23:30:32,302 WARN L227 SmtUtils]: Spent 16.71s on a formula simplification that was a NOOP. DAG size: 26 (called from [L 268] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2021-11-12 23:30:40,618 WARN L860 $PredicateComparison]: unable to prove that (or (not (= |c___VERIFIER_assert_#in~cond| (_ bv0 32))) (forall ((|v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_5| (_ BitVec 32)) (|v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_5| (_ FloatingPoint 11 53)) (currentRoundingMode RoundingMode) (|v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_5| (_ FloatingPoint 11 53))) (= (_ bv0 32) ((_ fp.to_sbv 32) roundTowardZero (fp.add currentRoundingMode (fp.sub currentRoundingMode (fp.sub currentRoundingMode ((_ to_fp 11 53) currentRoundingMode (bvmul |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_5| |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_5|)) |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_5|) ((_ to_fp 11 53) currentRoundingMode |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_5|)) (fp.mul currentRoundingMode ((_ to_fp 11 53) currentRoundingMode (_ bv2 32)) |v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_5|)))))) is different from true [2021-11-12 23:30:55,173 WARN L860 $PredicateComparison]: unable to prove that (or (= c___VERIFIER_assert_~cond (_ bv0 32)) (not (= |c___VERIFIER_assert_#in~cond| (_ bv0 32))) (forall ((|v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_5| (_ BitVec 32)) (|v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_5| (_ FloatingPoint 11 53)) (currentRoundingMode RoundingMode) (|v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_5| (_ FloatingPoint 11 53))) (= (_ bv0 32) ((_ fp.to_sbv 32) roundTowardZero (fp.add currentRoundingMode (fp.sub currentRoundingMode (fp.sub currentRoundingMode ((_ to_fp 11 53) currentRoundingMode (bvmul |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_5| |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_5|)) |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_5|) ((_ to_fp 11 53) currentRoundingMode |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_5|)) (fp.mul currentRoundingMode ((_ to_fp 11 53) currentRoundingMode (_ bv2 32)) |v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_5|)))))) is different from true [2021-11-12 23:30:55,201 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2021-11-12 23:30:55,201 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1392533796] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:30:55,202 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1443554210] [2021-11-12 23:30:55,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:30:55,202 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 23:30:55,202 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a94e3c0-da37-42c9-883e-1d3fec75b6fc/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 23:30:55,203 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a94e3c0-da37-42c9-883e-1d3fec75b6fc/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 23:30:55,204 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a94e3c0-da37-42c9-883e-1d3fec75b6fc/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-12 23:30:55,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:30:55,469 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-12 23:30:55,470 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:31:12,072 WARN L838 $PredicateComparison]: unable to prove that (and (exists ((|v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_6| (_ BitVec 32)) (|v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_6| (_ FloatingPoint 11 53)) (currentRoundingMode RoundingMode) (|v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_6| (_ FloatingPoint 11 53))) (= (_ bv0 32) ((_ fp.to_sbv 32) roundTowardZero (fp.add currentRoundingMode (fp.sub currentRoundingMode (fp.sub currentRoundingMode ((_ to_fp 11 53) currentRoundingMode (bvmul |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_6| |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_6|)) |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_6|) ((_ to_fp 11 53) currentRoundingMode |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_6|)) (fp.mul currentRoundingMode ((_ to_fp 11 53) currentRoundingMode (_ bv2 32)) |v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_6|))))) (= (_ bv1 32) |c___VERIFIER_assert_#in~cond|)) is different from false [2021-11-12 23:31:20,360 WARN L838 $PredicateComparison]: unable to prove that (and (exists ((|v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_6| (_ BitVec 32)) (|v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_6| (_ FloatingPoint 11 53)) (currentRoundingMode RoundingMode) (|v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_6| (_ FloatingPoint 11 53))) (= (_ bv0 32) ((_ fp.to_sbv 32) roundTowardZero (fp.add currentRoundingMode (fp.sub currentRoundingMode (fp.sub currentRoundingMode ((_ to_fp 11 53) currentRoundingMode (bvmul |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_6| |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_6|)) |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_6|) ((_ to_fp 11 53) currentRoundingMode |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_6|)) (fp.mul currentRoundingMode ((_ to_fp 11 53) currentRoundingMode (_ bv2 32)) |v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_6|))))) (= c___VERIFIER_assert_~cond (_ bv1 32))) is different from false [2021-11-12 23:31:20,370 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2021-11-12 23:31:20,370 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:31:45,413 WARN L227 SmtUtils]: Spent 16.70s on a formula simplification that was a NOOP. DAG size: 26 (called from [L 231] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2021-11-12 23:32:02,140 WARN L227 SmtUtils]: Spent 16.73s on a formula simplification that was a NOOP. DAG size: 26 (called from [L 268] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2021-11-12 23:32:10,460 WARN L860 $PredicateComparison]: unable to prove that (or (forall ((|v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_7| (_ FloatingPoint 11 53)) (|v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_7| (_ FloatingPoint 11 53)) (currentRoundingMode RoundingMode) (|v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_7| (_ BitVec 32))) (= ((_ fp.to_sbv 32) roundTowardZero (fp.add currentRoundingMode (fp.sub currentRoundingMode (fp.sub currentRoundingMode ((_ to_fp 11 53) currentRoundingMode (bvmul |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_7| |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_7|)) |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_7|) ((_ to_fp 11 53) currentRoundingMode |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_7|)) (fp.mul currentRoundingMode ((_ to_fp 11 53) currentRoundingMode (_ bv2 32)) |v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_7|))) (_ bv0 32))) (not (= |c___VERIFIER_assert_#in~cond| (_ bv0 32)))) is different from true [2021-11-12 23:32:24,992 WARN L860 $PredicateComparison]: unable to prove that (or (forall ((|v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_7| (_ FloatingPoint 11 53)) (|v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_7| (_ FloatingPoint 11 53)) (currentRoundingMode RoundingMode) (|v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_7| (_ BitVec 32))) (= ((_ fp.to_sbv 32) roundTowardZero (fp.add currentRoundingMode (fp.sub currentRoundingMode (fp.sub currentRoundingMode ((_ to_fp 11 53) currentRoundingMode (bvmul |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_7| |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_7|)) |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_7|) ((_ to_fp 11 53) currentRoundingMode |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_7|)) (fp.mul currentRoundingMode ((_ to_fp 11 53) currentRoundingMode (_ bv2 32)) |v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_7|))) (_ bv0 32))) (= c___VERIFIER_assert_~cond (_ bv0 32)) (not (= |c___VERIFIER_assert_#in~cond| (_ bv0 32)))) is different from true [2021-11-12 23:32:25,007 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2021-11-12 23:32:25,008 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1443554210] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:32:25,008 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-12 23:32:25,009 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7, 7, 7, 7] total 18 [2021-11-12 23:32:25,009 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425099747] [2021-11-12 23:32:25,009 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-12 23:32:25,010 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-12 23:32:25,010 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:32:25,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-12 23:32:25,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=25, Unknown=14, NotChecked=234, Total=306 [2021-11-12 23:32:25,012 INFO L87 Difference]: Start difference. First operand 18 states and 20 transitions. Second operand has 18 states, 18 states have (on average 1.5) internal successors, (27), 15 states have internal predecessors, (27), 2 states have call successors, (5), 5 states have call predecessors, (5), 4 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-12 23:32:27,155 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-12 23:32:29,160 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-12 23:32:31,407 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 (= c___VERIFIER_assert_~cond (_ bv0 32))) (.cse1 (not (= |c___VERIFIER_assert_#in~cond| (_ bv0 32))))) (and (= c___VERIFIER_assert_~cond |c___VERIFIER_assert_#in~cond|) (or .cse0 .cse1 (forall ((|v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_5| (_ BitVec 32)) (|v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_5| (_ FloatingPoint 11 53)) (currentRoundingMode RoundingMode) (|v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_5| (_ FloatingPoint 11 53))) (= (_ bv0 32) ((_ fp.to_sbv 32) roundTowardZero (fp.add currentRoundingMode (fp.sub currentRoundingMode (fp.sub currentRoundingMode ((_ to_fp 11 53) currentRoundingMode (bvmul |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_5| |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_5|)) |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_5|) ((_ to_fp 11 53) currentRoundingMode |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_5|)) (fp.mul currentRoundingMode ((_ to_fp 11 53) currentRoundingMode (_ bv2 32)) |v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_5|)))))) (or (forall ((|v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_7| (_ FloatingPoint 11 53)) (|v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_7| (_ FloatingPoint 11 53)) (currentRoundingMode RoundingMode) (|v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_7| (_ BitVec 32))) (= ((_ fp.to_sbv 32) roundTowardZero (fp.add currentRoundingMode (fp.sub currentRoundingMode (fp.sub currentRoundingMode ((_ to_fp 11 53) currentRoundingMode (bvmul |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_7| |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_7|)) |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_7|) ((_ to_fp 11 53) currentRoundingMode |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_7|)) (fp.mul currentRoundingMode ((_ to_fp 11 53) currentRoundingMode (_ bv2 32)) |v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_7|))) (_ bv0 32))) .cse0 .cse1) (or .cse0 (forall ((|v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_3| (_ FloatingPoint 11 53)) (|v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_3| (_ BitVec 32)) (|v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_3| (_ FloatingPoint 11 53)) (currentRoundingMode RoundingMode)) (= ((_ fp.to_sbv 32) roundTowardZero (fp.add currentRoundingMode (fp.sub currentRoundingMode (fp.sub currentRoundingMode ((_ to_fp 11 53) currentRoundingMode (bvmul |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_3| |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_3|)) |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_3|) ((_ to_fp 11 53) currentRoundingMode |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_3|)) (fp.mul currentRoundingMode ((_ to_fp 11 53) currentRoundingMode (_ bv2 32)) |v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_3|))) (_ bv0 32))) .cse1))) is different from true [2021-11-12 23:32:33,578 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 (not (= |c___VERIFIER_assert_#in~cond| (_ bv0 32))))) (and (or (forall ((|v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_7| (_ FloatingPoint 11 53)) (|v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_7| (_ FloatingPoint 11 53)) (currentRoundingMode RoundingMode) (|v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_7| (_ BitVec 32))) (= ((_ fp.to_sbv 32) roundTowardZero (fp.add currentRoundingMode (fp.sub currentRoundingMode (fp.sub currentRoundingMode ((_ to_fp 11 53) currentRoundingMode (bvmul |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_7| |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_7|)) |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_7|) ((_ to_fp 11 53) currentRoundingMode |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_7|)) (fp.mul currentRoundingMode ((_ to_fp 11 53) currentRoundingMode (_ bv2 32)) |v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_7|))) (_ bv0 32))) .cse0) (or (forall ((|v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_3| (_ FloatingPoint 11 53)) (|v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_3| (_ BitVec 32)) (|v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_3| (_ FloatingPoint 11 53)) (currentRoundingMode RoundingMode)) (= ((_ fp.to_sbv 32) roundTowardZero (fp.add currentRoundingMode (fp.sub currentRoundingMode (fp.sub currentRoundingMode ((_ to_fp 11 53) currentRoundingMode (bvmul |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_3| |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_3|)) |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_3|) ((_ to_fp 11 53) currentRoundingMode |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_3|)) (fp.mul currentRoundingMode ((_ to_fp 11 53) currentRoundingMode (_ bv2 32)) |v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_3|))) (_ bv0 32))) .cse0) (or .cse0 (forall ((|v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_5| (_ BitVec 32)) (|v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_5| (_ FloatingPoint 11 53)) (currentRoundingMode RoundingMode) (|v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_5| (_ FloatingPoint 11 53))) (= (_ bv0 32) ((_ fp.to_sbv 32) roundTowardZero (fp.add currentRoundingMode (fp.sub currentRoundingMode (fp.sub currentRoundingMode ((_ to_fp 11 53) currentRoundingMode (bvmul |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_5| |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_5|)) |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_5|) ((_ to_fp 11 53) currentRoundingMode |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_5|)) (fp.mul currentRoundingMode ((_ to_fp 11 53) currentRoundingMode (_ bv2 32)) |v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_5|)))))) .cse0)) is different from true [2021-11-12 23:32:35,755 WARN L838 $PredicateComparison]: unable to prove that (and (exists ((|v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_4| (_ BitVec 32)) (|v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_4| (_ FloatingPoint 11 53)) (|v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_4| (_ FloatingPoint 11 53)) (currentRoundingMode RoundingMode)) (= ((_ fp.to_sbv 32) roundTowardZero (fp.add currentRoundingMode (fp.sub currentRoundingMode (fp.sub currentRoundingMode ((_ to_fp 11 53) currentRoundingMode (bvmul |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_4| |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_4|)) |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_4|) ((_ to_fp 11 53) currentRoundingMode |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_4|)) (fp.mul currentRoundingMode ((_ to_fp 11 53) currentRoundingMode (_ bv2 32)) |v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_4|))) (_ bv0 32))) (exists ((|v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_2| (_ FloatingPoint 11 53)) (|v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_2| (_ BitVec 32)) (|v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_2| (_ FloatingPoint 11 53)) (currentRoundingMode RoundingMode)) (= ((_ fp.to_sbv 32) roundTowardZero (fp.add currentRoundingMode (fp.sub currentRoundingMode (fp.sub currentRoundingMode ((_ to_fp 11 53) currentRoundingMode (bvmul |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_2| |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_2|)) |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_2|) ((_ to_fp 11 53) currentRoundingMode |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_2|)) (fp.mul currentRoundingMode ((_ to_fp 11 53) currentRoundingMode (_ bv2 32)) |v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_2|))) (_ bv0 32))) (exists ((|v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_6| (_ BitVec 32)) (|v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_6| (_ FloatingPoint 11 53)) (currentRoundingMode RoundingMode) (|v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_6| (_ FloatingPoint 11 53))) (= (_ bv0 32) ((_ fp.to_sbv 32) roundTowardZero (fp.add currentRoundingMode (fp.sub currentRoundingMode (fp.sub currentRoundingMode ((_ to_fp 11 53) currentRoundingMode (bvmul |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_6| |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_6|)) |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_6|) ((_ to_fp 11 53) currentRoundingMode |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_6|)) (fp.mul currentRoundingMode ((_ to_fp 11 53) currentRoundingMode (_ bv2 32)) |v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_6|))))) (not (= |c___VERIFIER_assert_#in~cond| (_ bv0 32))) (= (_ bv1 32) |c___VERIFIER_assert_#in~cond|)) is different from false [2021-11-12 23:32:37,936 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (= c___VERIFIER_assert_~cond (_ bv0 32))) (.cse1 (not (= |c___VERIFIER_assert_#in~cond| (_ bv0 32))))) (and (= c___VERIFIER_assert_~cond |c___VERIFIER_assert_#in~cond|) (not .cse0) (exists ((|v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_4| (_ BitVec 32)) (|v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_4| (_ FloatingPoint 11 53)) (|v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_4| (_ FloatingPoint 11 53)) (currentRoundingMode RoundingMode)) (= ((_ fp.to_sbv 32) roundTowardZero (fp.add currentRoundingMode (fp.sub currentRoundingMode (fp.sub currentRoundingMode ((_ to_fp 11 53) currentRoundingMode (bvmul |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_4| |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_4|)) |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_4|) ((_ to_fp 11 53) currentRoundingMode |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_4|)) (fp.mul currentRoundingMode ((_ to_fp 11 53) currentRoundingMode (_ bv2 32)) |v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_4|))) (_ bv0 32))) (or .cse0 .cse1 (forall ((|v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_5| (_ BitVec 32)) (|v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_5| (_ FloatingPoint 11 53)) (currentRoundingMode RoundingMode) (|v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_5| (_ FloatingPoint 11 53))) (= (_ bv0 32) ((_ fp.to_sbv 32) roundTowardZero (fp.add currentRoundingMode (fp.sub currentRoundingMode (fp.sub currentRoundingMode ((_ to_fp 11 53) currentRoundingMode (bvmul |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_5| |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_5|)) |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_5|) ((_ to_fp 11 53) currentRoundingMode |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_5|)) (fp.mul currentRoundingMode ((_ to_fp 11 53) currentRoundingMode (_ bv2 32)) |v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_5|)))))) (exists ((|v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_2| (_ FloatingPoint 11 53)) (|v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_2| (_ BitVec 32)) (|v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_2| (_ FloatingPoint 11 53)) (currentRoundingMode RoundingMode)) (= ((_ fp.to_sbv 32) roundTowardZero (fp.add currentRoundingMode (fp.sub currentRoundingMode (fp.sub currentRoundingMode ((_ to_fp 11 53) currentRoundingMode (bvmul |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_2| |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_2|)) |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_2|) ((_ to_fp 11 53) currentRoundingMode |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_2|)) (fp.mul currentRoundingMode ((_ to_fp 11 53) currentRoundingMode (_ bv2 32)) |v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_2|))) (_ bv0 32))) (or (forall ((|v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_7| (_ FloatingPoint 11 53)) (|v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_7| (_ FloatingPoint 11 53)) (currentRoundingMode RoundingMode) (|v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_7| (_ BitVec 32))) (= ((_ fp.to_sbv 32) roundTowardZero (fp.add currentRoundingMode (fp.sub currentRoundingMode (fp.sub currentRoundingMode ((_ to_fp 11 53) currentRoundingMode (bvmul |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_7| |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_7|)) |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_7|) ((_ to_fp 11 53) currentRoundingMode |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_7|)) (fp.mul currentRoundingMode ((_ to_fp 11 53) currentRoundingMode (_ bv2 32)) |v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_7|))) (_ bv0 32))) .cse0 .cse1) (or .cse0 (forall ((|v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_3| (_ FloatingPoint 11 53)) (|v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_3| (_ BitVec 32)) (|v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_3| (_ FloatingPoint 11 53)) (currentRoundingMode RoundingMode)) (= ((_ fp.to_sbv 32) roundTowardZero (fp.add currentRoundingMode (fp.sub currentRoundingMode (fp.sub currentRoundingMode ((_ to_fp 11 53) currentRoundingMode (bvmul |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_3| |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_3|)) |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_3|) ((_ to_fp 11 53) currentRoundingMode |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_3|)) (fp.mul currentRoundingMode ((_ to_fp 11 53) currentRoundingMode (_ bv2 32)) |v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_3|))) (_ bv0 32))) .cse1) (exists ((|v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_6| (_ BitVec 32)) (|v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_6| (_ FloatingPoint 11 53)) (currentRoundingMode RoundingMode) (|v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_6| (_ FloatingPoint 11 53))) (= (_ bv0 32) ((_ fp.to_sbv 32) roundTowardZero (fp.add currentRoundingMode (fp.sub currentRoundingMode (fp.sub currentRoundingMode ((_ to_fp 11 53) currentRoundingMode (bvmul |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_6| |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_6|)) |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_6|) ((_ to_fp 11 53) currentRoundingMode |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_6|)) (fp.mul currentRoundingMode ((_ to_fp 11 53) currentRoundingMode (_ bv2 32)) |v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_6|))))) (= c___VERIFIER_assert_~cond (_ bv1 32)))) is different from false [2021-11-12 23:32:40,095 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 (= c___VERIFIER_assert_~cond (_ bv0 32))) (.cse1 (not (= |c___VERIFIER_assert_#in~cond| (_ bv0 32))))) (and (= c___VERIFIER_assert_~cond |c___VERIFIER_assert_#in~cond|) (not .cse0) (exists ((|v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_4| (_ BitVec 32)) (|v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_4| (_ FloatingPoint 11 53)) (|v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_4| (_ FloatingPoint 11 53)) (currentRoundingMode RoundingMode)) (= ((_ fp.to_sbv 32) roundTowardZero (fp.add currentRoundingMode (fp.sub currentRoundingMode (fp.sub currentRoundingMode ((_ to_fp 11 53) currentRoundingMode (bvmul |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_4| |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_4|)) |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_4|) ((_ to_fp 11 53) currentRoundingMode |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_4|)) (fp.mul currentRoundingMode ((_ to_fp 11 53) currentRoundingMode (_ bv2 32)) |v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_4|))) (_ bv0 32))) (or .cse0 .cse1 (forall ((|v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_5| (_ BitVec 32)) (|v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_5| (_ FloatingPoint 11 53)) (currentRoundingMode RoundingMode) (|v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_5| (_ FloatingPoint 11 53))) (= (_ bv0 32) ((_ fp.to_sbv 32) roundTowardZero (fp.add currentRoundingMode (fp.sub currentRoundingMode (fp.sub currentRoundingMode ((_ to_fp 11 53) currentRoundingMode (bvmul |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_5| |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_5|)) |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_5|) ((_ to_fp 11 53) currentRoundingMode |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_5|)) (fp.mul currentRoundingMode ((_ to_fp 11 53) currentRoundingMode (_ bv2 32)) |v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_5|)))))) (exists ((|v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_2| (_ FloatingPoint 11 53)) (|v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_2| (_ BitVec 32)) (|v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_2| (_ FloatingPoint 11 53)) (currentRoundingMode RoundingMode)) (= ((_ fp.to_sbv 32) roundTowardZero (fp.add currentRoundingMode (fp.sub currentRoundingMode (fp.sub currentRoundingMode ((_ to_fp 11 53) currentRoundingMode (bvmul |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_2| |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_2|)) |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_2|) ((_ to_fp 11 53) currentRoundingMode |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_2|)) (fp.mul currentRoundingMode ((_ to_fp 11 53) currentRoundingMode (_ bv2 32)) |v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_2|))) (_ bv0 32))) (or (forall ((|v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_7| (_ FloatingPoint 11 53)) (|v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_7| (_ FloatingPoint 11 53)) (currentRoundingMode RoundingMode) (|v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_7| (_ BitVec 32))) (= ((_ fp.to_sbv 32) roundTowardZero (fp.add currentRoundingMode (fp.sub currentRoundingMode (fp.sub currentRoundingMode ((_ to_fp 11 53) currentRoundingMode (bvmul |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_7| |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_7|)) |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_7|) ((_ to_fp 11 53) currentRoundingMode |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_7|)) (fp.mul currentRoundingMode ((_ to_fp 11 53) currentRoundingMode (_ bv2 32)) |v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_7|))) (_ bv0 32))) .cse0 .cse1) (or .cse0 (forall ((|v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_3| (_ FloatingPoint 11 53)) (|v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_3| (_ BitVec 32)) (|v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_3| (_ FloatingPoint 11 53)) (currentRoundingMode RoundingMode)) (= ((_ fp.to_sbv 32) roundTowardZero (fp.add currentRoundingMode (fp.sub currentRoundingMode (fp.sub currentRoundingMode ((_ to_fp 11 53) currentRoundingMode (bvmul |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_3| |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_3|)) |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_3|) ((_ to_fp 11 53) currentRoundingMode |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_3|)) (fp.mul currentRoundingMode ((_ to_fp 11 53) currentRoundingMode (_ bv2 32)) |v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_3|))) (_ bv0 32))) .cse1) (exists ((|v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_6| (_ BitVec 32)) (|v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_6| (_ FloatingPoint 11 53)) (currentRoundingMode RoundingMode) (|v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_6| (_ FloatingPoint 11 53))) (= (_ bv0 32) ((_ fp.to_sbv 32) roundTowardZero (fp.add currentRoundingMode (fp.sub currentRoundingMode (fp.sub currentRoundingMode ((_ to_fp 11 53) currentRoundingMode (bvmul |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_6| |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_6|)) |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_6|) ((_ to_fp 11 53) currentRoundingMode |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_6|)) (fp.mul currentRoundingMode ((_ to_fp 11 53) currentRoundingMode (_ bv2 32)) |v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_6|))))) (= c___VERIFIER_assert_~cond (_ bv1 32)))) is different from true [2021-11-12 23:32:40,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:32:40,097 INFO L93 Difference]: Finished difference Result 22 states and 24 transitions. [2021-11-12 23:32:40,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-12 23:32:40,097 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.5) internal successors, (27), 15 states have internal predecessors, (27), 2 states have call successors, (5), 5 states have call predecessors, (5), 4 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 15 [2021-11-12 23:32:40,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:32:40,098 INFO L225 Difference]: With dead ends: 22 [2021-11-12 23:32:40,099 INFO L226 Difference]: Without dead ends: 17 [2021-11-12 23:32:40,099 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 17 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 39.9s TimeCoverageRelationStatistics Valid=41, Invalid=28, Unknown=19, NotChecked=374, Total=462 [2021-11-12 23:32:40,101 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 0 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4148.57ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.47ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 83 IncrementalHoareTripleChecker+Unchecked, 4221.96ms IncrementalHoareTripleChecker+Time [2021-11-12 23:32:40,102 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 67 Invalid, 87 Unknown, 0 Unchecked, 1.47ms Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 2 Unknown, 83 Unchecked, 4221.96ms Time] [2021-11-12 23:32:40,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-11-12 23:32:40,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2021-11-12 23:32:40,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 13 states have (on average 1.0769230769230769) internal successors, (14), 13 states have internal predecessors, (14), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-12 23:32:40,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2021-11-12 23:32:40,107 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 15 [2021-11-12 23:32:40,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:32:40,109 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2021-11-12 23:32:40,110 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.5) internal successors, (27), 15 states have internal predecessors, (27), 2 states have call successors, (5), 5 states have call predecessors, (5), 4 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-12 23:32:40,110 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2021-11-12 23:32:40,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-12 23:32:40,111 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:32:40,111 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:32:40,120 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a94e3c0-da37-42c9-883e-1d3fec75b6fc/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (5)] Forceful destruction successful, exit code 0 [2021-11-12 23:32:40,354 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a94e3c0-da37-42c9-883e-1d3fec75b6fc/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-12 23:32:40,527 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a94e3c0-da37-42c9-883e-1d3fec75b6fc/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-12 23:32:40,713 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a94e3c0-da37-42c9-883e-1d3fec75b6fc/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a94e3c0-da37-42c9-883e-1d3fec75b6fc/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a94e3c0-da37-42c9-883e-1d3fec75b6fc/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:32:40,714 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:32:40,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:32:40,714 INFO L85 PathProgramCache]: Analyzing trace with hash -610823942, now seen corresponding path program 1 times [2021-11-12 23:32:40,715 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:32:40,715 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [49711003] [2021-11-12 23:32:40,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:32:40,715 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:32:40,715 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a94e3c0-da37-42c9-883e-1d3fec75b6fc/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:32:40,717 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a94e3c0-da37-42c9-883e-1d3fec75b6fc/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:32:40,722 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a94e3c0-da37-42c9-883e-1d3fec75b6fc/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-12 23:32:43,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:32:43,791 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-12 23:32:43,792 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:33:20,978 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 (fp.div c_currentRoundingMode |c_ULTIMATE.start_main_~a~0#1| ((_ to_fp 11 53) c_currentRoundingMode 2.0))) (.cse1 ((_ to_fp 11 53) c_currentRoundingMode (bvadd (_ bv4294967295 32) |c_ULTIMATE.start_main_~r~0#1|)))) (and (fp.gt .cse0 .cse1) (= |c_ULTIMATE.start_main_~r~0#1| (_ bv1 32)) (= (fp.sub c_currentRoundingMode .cse0 .cse1) |c_ULTIMATE.start_main_~x~0#1|) (fp.leq |c_ULTIMATE.start_main_~a~0#1| ((_ to_fp 11 53) c_currentRoundingMode (_ bv5 32))) (= c_currentRoundingMode roundNearestTiesToEven))) is different from true [2021-11-12 23:34:27,768 WARN L838 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_9| (_ FloatingPoint 11 53))) (let ((.cse0 (fp.div roundNearestTiesToEven |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_9| ((_ to_fp 11 53) roundNearestTiesToEven 2.0))) (.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))) (and (fp.gt .cse0 .cse1) (let ((.cse2 (= ((_ fp.to_sbv 32) roundTowardZero (fp.add roundNearestTiesToEven (let ((.cse3 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv1 32)))) (fp.sub roundNearestTiesToEven (fp.sub roundNearestTiesToEven .cse3 |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_9|) .cse3)) (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (_ bv2 32)) (fp.sub roundNearestTiesToEven .cse0 .cse1)))) (_ bv0 32)))) (or (and (not .cse2) (= |c___VERIFIER_assert_#in~cond| (_ bv0 32))) (and .cse2 (= (_ bv1 32) |c___VERIFIER_assert_#in~cond|)))) (fp.leq |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_9| ((_ to_fp 11 53) roundNearestTiesToEven (_ bv5 32)))))) is different from false [2021-11-12 23:34:29,823 WARN L860 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_9| (_ FloatingPoint 11 53))) (let ((.cse0 (fp.div roundNearestTiesToEven |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_9| ((_ to_fp 11 53) roundNearestTiesToEven 2.0))) (.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))) (and (fp.gt .cse0 .cse1) (let ((.cse2 (= ((_ fp.to_sbv 32) roundTowardZero (fp.add roundNearestTiesToEven (let ((.cse3 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv1 32)))) (fp.sub roundNearestTiesToEven (fp.sub roundNearestTiesToEven .cse3 |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_9|) .cse3)) (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (_ bv2 32)) (fp.sub roundNearestTiesToEven .cse0 .cse1)))) (_ bv0 32)))) (or (and (not .cse2) (= |c___VERIFIER_assert_#in~cond| (_ bv0 32))) (and .cse2 (= (_ bv1 32) |c___VERIFIER_assert_#in~cond|)))) (fp.leq |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_9| ((_ to_fp 11 53) roundNearestTiesToEven (_ bv5 32)))))) is different from true [2021-11-12 23:35:26,222 WARN L838 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_9| (_ FloatingPoint 11 53))) (let ((.cse0 (fp.div roundNearestTiesToEven |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_9| ((_ to_fp 11 53) roundNearestTiesToEven 2.0))) (.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))) (and (fp.gt .cse0 .cse1) (let ((.cse2 (= ((_ fp.to_sbv 32) roundTowardZero (fp.add roundNearestTiesToEven (let ((.cse3 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv1 32)))) (fp.sub roundNearestTiesToEven (fp.sub roundNearestTiesToEven .cse3 |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_9|) .cse3)) (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (_ bv2 32)) (fp.sub roundNearestTiesToEven .cse0 .cse1)))) (_ bv0 32)))) (or (and .cse2 (= c___VERIFIER_assert_~cond (_ bv1 32))) (and (not .cse2) (= c___VERIFIER_assert_~cond (_ bv0 32))))) (fp.leq |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_9| ((_ to_fp 11 53) roundNearestTiesToEven (_ bv5 32)))))) is different from false [2021-11-12 23:35:28,277 WARN L860 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_9| (_ FloatingPoint 11 53))) (let ((.cse0 (fp.div roundNearestTiesToEven |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_9| ((_ to_fp 11 53) roundNearestTiesToEven 2.0))) (.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))) (and (fp.gt .cse0 .cse1) (let ((.cse2 (= ((_ fp.to_sbv 32) roundTowardZero (fp.add roundNearestTiesToEven (let ((.cse3 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv1 32)))) (fp.sub roundNearestTiesToEven (fp.sub roundNearestTiesToEven .cse3 |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_9|) .cse3)) (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (_ bv2 32)) (fp.sub roundNearestTiesToEven .cse0 .cse1)))) (_ bv0 32)))) (or (and .cse2 (= c___VERIFIER_assert_~cond (_ bv1 32))) (and (not .cse2) (= c___VERIFIER_assert_~cond (_ bv0 32))))) (fp.leq |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_9| ((_ to_fp 11 53) roundNearestTiesToEven (_ bv5 32)))))) is different from true [2021-11-12 23:35:45,111 WARN L838 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_9| (_ FloatingPoint 11 53))) (let ((.cse1 (fp.div roundNearestTiesToEven |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_9| ((_ to_fp 11 53) roundNearestTiesToEven 2.0))) (.cse2 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))) (and (not (= ((_ fp.to_sbv 32) roundTowardZero (fp.add roundNearestTiesToEven (let ((.cse0 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv1 32)))) (fp.sub roundNearestTiesToEven (fp.sub roundNearestTiesToEven .cse0 |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_9|) .cse0)) (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (_ bv2 32)) (fp.sub roundNearestTiesToEven .cse1 .cse2)))) (_ bv0 32))) (fp.gt .cse1 .cse2) (fp.leq |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_9| ((_ to_fp 11 53) roundNearestTiesToEven (_ bv5 32)))))) is different from false [2021-11-12 23:35:47,165 WARN L860 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_9| (_ FloatingPoint 11 53))) (let ((.cse1 (fp.div roundNearestTiesToEven |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_9| ((_ to_fp 11 53) roundNearestTiesToEven 2.0))) (.cse2 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))) (and (not (= ((_ fp.to_sbv 32) roundTowardZero (fp.add roundNearestTiesToEven (let ((.cse0 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv1 32)))) (fp.sub roundNearestTiesToEven (fp.sub roundNearestTiesToEven .cse0 |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_9|) .cse0)) (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (_ bv2 32)) (fp.sub roundNearestTiesToEven .cse1 .cse2)))) (_ bv0 32))) (fp.gt .cse1 .cse2) (fp.leq |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_9| ((_ to_fp 11 53) roundNearestTiesToEven (_ bv5 32)))))) is different from true [2021-11-12 23:35:47,166 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 4 not checked. [2021-11-12 23:35:47,166 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:35:54,591 WARN L838 $PredicateComparison]: unable to prove that (= ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (bvmul |c_ULTIMATE.start_main_~r~0#1| |c_ULTIMATE.start_main_~r~0#1|)) |c_ULTIMATE.start_main_~a~0#1|) ((_ to_fp 11 53) c_currentRoundingMode |c_ULTIMATE.start_main_~r~0#1|)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) |c_ULTIMATE.start_main_~x~0#1|))) (_ bv0 32)) is different from false [2021-11-12 23:35:56,659 WARN L860 $PredicateComparison]: unable to prove that (= ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (bvmul |c_ULTIMATE.start_main_~r~0#1| |c_ULTIMATE.start_main_~r~0#1|)) |c_ULTIMATE.start_main_~a~0#1|) ((_ to_fp 11 53) c_currentRoundingMode |c_ULTIMATE.start_main_~r~0#1|)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) |c_ULTIMATE.start_main_~x~0#1|))) (_ bv0 32)) is different from true [2021-11-12 23:36:11,381 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode |c_ULTIMATE.start_main_~r~0#1|))) (or (not (fp.gt |c_ULTIMATE.start_main_~x~0#1| .cse0)) (= ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (let ((.cse1 (bvadd |c_ULTIMATE.start_main_~r~0#1| (_ bv1 32)))) (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (bvmul .cse1 .cse1)) |c_ULTIMATE.start_main_~a~0#1|) ((_ to_fp 11 53) c_currentRoundingMode .cse1))) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) (fp.sub c_currentRoundingMode |c_ULTIMATE.start_main_~x~0#1| .cse0)))) (_ bv0 32)))) is different from false [2021-11-12 23:36:13,464 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode |c_ULTIMATE.start_main_~r~0#1|))) (or (not (fp.gt |c_ULTIMATE.start_main_~x~0#1| .cse0)) (= ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (let ((.cse1 (bvadd |c_ULTIMATE.start_main_~r~0#1| (_ bv1 32)))) (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (bvmul .cse1 .cse1)) |c_ULTIMATE.start_main_~a~0#1|) ((_ to_fp 11 53) c_currentRoundingMode .cse1))) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) (fp.sub c_currentRoundingMode |c_ULTIMATE.start_main_~x~0#1| .cse0)))) (_ bv0 32)))) is different from true [2021-11-12 23:36:41,040 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (fp.div c_currentRoundingMode |c_ULTIMATE.start_main_~a~0#1| ((_ to_fp 11 53) c_currentRoundingMode 2.0))) (.cse1 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))) (or (not (fp.gt .cse0 .cse1)) (= ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (let ((.cse2 ((_ to_fp 11 53) c_currentRoundingMode (_ bv1 32)))) (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode .cse2 |c_ULTIMATE.start_main_~a~0#1|) .cse2)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) (fp.sub c_currentRoundingMode .cse0 .cse1)))) (_ bv0 32)))) is different from false [2021-11-12 23:36:43,109 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 (fp.div c_currentRoundingMode |c_ULTIMATE.start_main_~a~0#1| ((_ to_fp 11 53) c_currentRoundingMode 2.0))) (.cse1 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))) (or (not (fp.gt .cse0 .cse1)) (= ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (let ((.cse2 ((_ to_fp 11 53) c_currentRoundingMode (_ bv1 32)))) (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode .cse2 |c_ULTIMATE.start_main_~a~0#1|) .cse2)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) (fp.sub c_currentRoundingMode .cse0 .cse1)))) (_ bv0 32)))) is different from true [2021-11-12 23:36:57,944 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (fp.div c_currentRoundingMode |c_ULTIMATE.start_main_~a~0#1| ((_ to_fp 11 53) c_currentRoundingMode 2.0))) (.cse1 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))) (or (= |c_ULTIMATE.start_assume_abort_if_not_~cond#1| (_ bv0 32)) (not (fp.gt .cse0 .cse1)) (= ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (let ((.cse2 ((_ to_fp 11 53) c_currentRoundingMode (_ bv1 32)))) (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode .cse2 |c_ULTIMATE.start_main_~a~0#1|) .cse2)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) (fp.sub c_currentRoundingMode .cse0 .cse1)))) (_ bv0 32)))) is different from false [2021-11-12 23:37:00,019 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 (fp.div c_currentRoundingMode |c_ULTIMATE.start_main_~a~0#1| ((_ to_fp 11 53) c_currentRoundingMode 2.0))) (.cse1 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))) (or (= |c_ULTIMATE.start_assume_abort_if_not_~cond#1| (_ bv0 32)) (not (fp.gt .cse0 .cse1)) (= ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (let ((.cse2 ((_ to_fp 11 53) c_currentRoundingMode (_ bv1 32)))) (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode .cse2 |c_ULTIMATE.start_main_~a~0#1|) .cse2)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) (fp.sub c_currentRoundingMode .cse0 .cse1)))) (_ bv0 32)))) is different from true [2021-11-12 23:37:17,060 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~a~0#1_13| (_ FloatingPoint 11 53))) (let ((.cse1 (fp.div c_currentRoundingMode |v_ULTIMATE.start_main_~a~0#1_13| ((_ to_fp 11 53) c_currentRoundingMode 2.0))) (.cse2 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))) (or (= ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv1 32)))) (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode .cse0 |v_ULTIMATE.start_main_~a~0#1_13|) .cse0)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) (fp.sub c_currentRoundingMode .cse1 .cse2)))) (_ bv0 32)) (not (fp.gt .cse1 .cse2)) (not (fp.leq |v_ULTIMATE.start_main_~a~0#1_13| ((_ to_fp 11 53) c_currentRoundingMode (_ bv5 32))))))) is different from false [2021-11-12 23:37:19,139 WARN L860 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~a~0#1_13| (_ FloatingPoint 11 53))) (let ((.cse1 (fp.div c_currentRoundingMode |v_ULTIMATE.start_main_~a~0#1_13| ((_ to_fp 11 53) c_currentRoundingMode 2.0))) (.cse2 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))) (or (= ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv1 32)))) (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode .cse0 |v_ULTIMATE.start_main_~a~0#1_13|) .cse0)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) (fp.sub c_currentRoundingMode .cse1 .cse2)))) (_ bv0 32)) (not (fp.gt .cse1 .cse2)) (not (fp.leq |v_ULTIMATE.start_main_~a~0#1_13| ((_ to_fp 11 53) c_currentRoundingMode (_ bv5 32))))))) is different from true [2021-11-12 23:37:19,139 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2021-11-12 23:37:19,139 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:37:19,140 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [49711003] [2021-11-12 23:37:19,140 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [49711003] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:37:19,140 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [343581613] [2021-11-12 23:37:19,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:37:19,141 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-12 23:37:19,141 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a94e3c0-da37-42c9-883e-1d3fec75b6fc/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-12 23:37:19,142 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a94e3c0-da37-42c9-883e-1d3fec75b6fc/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-12 23:37:19,143 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8a94e3c0-da37-42c9-883e-1d3fec75b6fc/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (8)] Waiting until timeout for monitored process [2021-11-12 23:37:23,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:37:23,628 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-12 23:37:23,629 INFO L286 TraceCheckSpWp]: Computing forward predicates...