./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 47ea0209 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90327310-f68a-4b33-b7e9-23f03f304e7c/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90327310-f68a-4b33-b7e9-23f03f304e7c/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90327310-f68a-4b33-b7e9-23f03f304e7c/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90327310-f68a-4b33-b7e9-23f03f304e7c/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/freire1_valuebound5.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90327310-f68a-4b33-b7e9-23f03f304e7c/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90327310-f68a-4b33-b7e9-23f03f304e7c/bin/utaipan-UUZaoUuFF8 --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-47ea020 [2021-11-07 01:59:11,764 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:59:11,767 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:59:11,808 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:59:11,808 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:59:11,810 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:59:11,812 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:59:11,815 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:59:11,818 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:59:11,820 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:59:11,822 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:59:11,824 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:59:11,824 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:59:11,826 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:59:11,829 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:59:11,831 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:59:11,832 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:59:11,834 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:59:11,837 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:59:11,841 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:59:11,844 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:59:11,855 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:59:11,856 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:59:11,858 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:59:11,862 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:59:11,863 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:59:11,863 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:59:11,865 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:59:11,876 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:59:11,878 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:59:11,882 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:59:11,883 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:59:11,884 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:59:11,885 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:59:11,886 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:59:11,887 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:59:11,888 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:59:11,888 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:59:11,888 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:59:11,890 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:59:11,890 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:59:11,892 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90327310-f68a-4b33-b7e9-23f03f304e7c/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-07 01:59:11,925 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:59:11,926 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:59:11,927 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:59:11,927 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:59:11,928 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:59:11,928 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:59:11,928 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 01:59:11,929 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:59:11,929 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:59:11,929 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 01:59:11,929 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 01:59:11,930 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:59:11,930 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 01:59:11,930 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 01:59:11,931 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 01:59:11,932 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:59:11,932 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 01:59:11,932 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 01:59:11,932 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 01:59:11,933 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:59:11,933 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:59:11,933 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:59:11,934 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:59:11,934 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:59:11,934 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 01:59:11,934 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:59:11,935 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:59:11,935 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:59:11,935 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:59:11,936 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:59:11,936 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:59:11,936 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:59:11,936 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:59:11,937 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:59:11,937 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 01:59:11,937 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 01:59:11,938 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:59:11,938 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:59:11,938 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:59:11,938 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_90327310-f68a-4b33-b7e9-23f03f304e7c/bin/utaipan-UUZaoUuFF8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90327310-f68a-4b33-b7e9-23f03f304e7c/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6437fdc3c0b95eb5fb3a7e28606efb50e2431074b1de5f5cf4c718827adac36d [2021-11-07 01:59:12,306 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:59:12,386 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:59:12,389 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:59:12,391 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:59:12,392 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:59:12,394 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90327310-f68a-4b33-b7e9-23f03f304e7c/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/nla-digbench-scaling/freire1_valuebound5.c [2021-11-07 01:59:12,502 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90327310-f68a-4b33-b7e9-23f03f304e7c/bin/utaipan-UUZaoUuFF8/data/abb26da2f/a2a5520422f94bb0b230d28daae27c79/FLAG26a985a34 [2021-11-07 01:59:13,073 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:59:13,074 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90327310-f68a-4b33-b7e9-23f03f304e7c/sv-benchmarks/c/nla-digbench-scaling/freire1_valuebound5.c [2021-11-07 01:59:13,082 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90327310-f68a-4b33-b7e9-23f03f304e7c/bin/utaipan-UUZaoUuFF8/data/abb26da2f/a2a5520422f94bb0b230d28daae27c79/FLAG26a985a34 [2021-11-07 01:59:13,421 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90327310-f68a-4b33-b7e9-23f03f304e7c/bin/utaipan-UUZaoUuFF8/data/abb26da2f/a2a5520422f94bb0b230d28daae27c79 [2021-11-07 01:59:13,429 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:59:13,431 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:59:13,435 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:59:13,435 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:59:13,439 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:59:13,441 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:59:13" (1/1) ... [2021-11-07 01:59:13,444 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@cbea6f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:59:13, skipping insertion in model container [2021-11-07 01:59:13,444 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:59:13" (1/1) ... [2021-11-07 01:59:13,455 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:59:13,476 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:59:13,724 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_90327310-f68a-4b33-b7e9-23f03f304e7c/sv-benchmarks/c/nla-digbench-scaling/freire1_valuebound5.c[712,725] [2021-11-07 01:59:13,769 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:59:13,787 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 01:59:13,802 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_90327310-f68a-4b33-b7e9-23f03f304e7c/sv-benchmarks/c/nla-digbench-scaling/freire1_valuebound5.c[712,725] [2021-11-07 01:59:13,816 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:59:13,834 INFO L208 MainTranslator]: Completed translation [2021-11-07 01:59:13,834 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:59:13 WrapperNode [2021-11-07 01:59:13,835 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:59:13,839 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 01:59:13,839 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 01:59:13,839 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 01:59:13,849 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:59:13" (1/1) ... [2021-11-07 01:59:13,860 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:59:13" (1/1) ... [2021-11-07 01:59:13,897 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 01:59:13,898 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 01:59:13,898 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 01:59:13,898 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 01:59:13,909 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:59:13" (1/1) ... [2021-11-07 01:59:13,909 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:59:13" (1/1) ... [2021-11-07 01:59:13,911 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:59:13" (1/1) ... [2021-11-07 01:59:13,911 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:59:13" (1/1) ... [2021-11-07 01:59:13,917 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:59:13" (1/1) ... [2021-11-07 01:59:13,922 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:59:13" (1/1) ... [2021-11-07 01:59:13,923 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:59:13" (1/1) ... [2021-11-07 01:59:13,925 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 01:59:13,927 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 01:59:13,927 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 01:59:13,927 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 01:59:13,931 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:59:13" (1/1) ... [2021-11-07 01:59:13,948 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:59:13,959 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90327310-f68a-4b33-b7e9-23f03f304e7c/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:59:13,972 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90327310-f68a-4b33-b7e9-23f03f304e7c/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 01:59:13,978 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90327310-f68a-4b33-b7e9-23f03f304e7c/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 01:59:14,012 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-07 01:59:14,013 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 01:59:14,013 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 01:59:14,013 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 01:59:14,370 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 01:59:14,370 INFO L299 CfgBuilder]: Removed 11 assume(true) statements. [2021-11-07 01:59:14,373 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:59:14 BoogieIcfgContainer [2021-11-07 01:59:14,373 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 01:59:14,376 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 01:59:14,376 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 01:59:14,381 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 01:59:14,381 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:59:13" (1/3) ... [2021-11-07 01:59:14,382 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e959da7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:59:14, skipping insertion in model container [2021-11-07 01:59:14,382 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:59:13" (2/3) ... [2021-11-07 01:59:14,383 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e959da7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:59:14, skipping insertion in model container [2021-11-07 01:59:14,383 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:59:14" (3/3) ... [2021-11-07 01:59:14,385 INFO L111 eAbstractionObserver]: Analyzing ICFG freire1_valuebound5.c [2021-11-07 01:59:14,391 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 01:59:14,392 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-07 01:59:14,490 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 01:59:14,499 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 [2021-11-07 01:59:14,499 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-07 01:59:14,517 INFO L276 IsEmpty]: Start isEmpty. Operand has 12 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 11 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:59:14,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-11-07 01:59:14,523 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:59:14,524 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-11-07 01:59:14,525 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:59:14,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:59:14,532 INFO L85 PathProgramCache]: Analyzing trace with hash 2669371, now seen corresponding path program 1 times [2021-11-07 01:59:14,544 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:59:14,545 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484473814] [2021-11-07 01:59:14,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:59:14,546 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:59:14,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 01:59:14,666 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-07 01:59:14,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 01:59:14,743 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-07 01:59:14,746 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-11-07 01:59:14,748 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-11-07 01:59:14,750 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-11-07 01:59:14,751 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-07 01:59:14,755 INFO L731 BasicCegarLoop]: Path program histogram: [1] [2021-11-07 01:59:14,759 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-07 01:59:14,786 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 01:59:14 BoogieIcfgContainer [2021-11-07 01:59:14,786 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-07 01:59:14,791 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-07 01:59:14,791 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-07 01:59:14,791 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-07 01:59:14,792 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:59:14" (3/4) ... [2021-11-07 01:59:14,796 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-07 01:59:14,797 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-07 01:59:14,800 INFO L168 Benchmark]: Toolchain (without parser) took 1367.72 ms. Allocated memory was 88.1 MB in the beginning and 123.7 MB in the end (delta: 35.7 MB). Free memory was 51.2 MB in the beginning and 73.3 MB in the end (delta: -22.2 MB). Peak memory consumption was 12.2 MB. Max. memory is 16.1 GB. [2021-11-07 01:59:14,802 INFO L168 Benchmark]: CDTParser took 1.24 ms. Allocated memory is still 88.1 MB. Free memory was 67.7 MB in the beginning and 67.6 MB in the end (delta: 38.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:59:14,804 INFO L168 Benchmark]: CACSL2BoogieTranslator took 400.63 ms. Allocated memory was 88.1 MB in the beginning and 123.7 MB in the end (delta: 35.7 MB). Free memory was 50.9 MB in the beginning and 101.6 MB in the end (delta: -50.7 MB). Peak memory consumption was 10.1 MB. Max. memory is 16.1 GB. [2021-11-07 01:59:14,807 INFO L168 Benchmark]: Boogie Procedure Inliner took 58.61 ms. Allocated memory is still 123.7 MB. Free memory was 101.6 MB in the beginning and 100.0 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-07 01:59:14,808 INFO L168 Benchmark]: Boogie Preprocessor took 27.74 ms. Allocated memory is still 123.7 MB. Free memory was 100.0 MB in the beginning and 99.0 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:59:14,811 INFO L168 Benchmark]: RCFGBuilder took 447.05 ms. Allocated memory is still 123.7 MB. Free memory was 99.0 MB in the beginning and 87.4 MB in the end (delta: 11.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-11-07 01:59:14,818 INFO L168 Benchmark]: TraceAbstraction took 410.39 ms. Allocated memory is still 123.7 MB. Free memory was 86.9 MB in the beginning and 73.8 MB in the end (delta: 13.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-11-07 01:59:14,819 INFO L168 Benchmark]: Witness Printer took 6.49 ms. Allocated memory is still 123.7 MB. Free memory was 73.8 MB in the beginning and 73.3 MB in the end (delta: 511.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:59:14,829 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.24 ms. Allocated memory is still 88.1 MB. Free memory was 67.7 MB in the beginning and 67.6 MB in the end (delta: 38.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 400.63 ms. Allocated memory was 88.1 MB in the beginning and 123.7 MB in the end (delta: 35.7 MB). Free memory was 50.9 MB in the beginning and 101.6 MB in the end (delta: -50.7 MB). Peak memory consumption was 10.1 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 58.61 ms. Allocated memory is still 123.7 MB. Free memory was 101.6 MB in the beginning and 100.0 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 27.74 ms. Allocated memory is still 123.7 MB. Free memory was 100.0 MB in the beginning and 99.0 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 447.05 ms. Allocated memory is still 123.7 MB. Free memory was 99.0 MB in the beginning and 87.4 MB in the end (delta: 11.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 410.39 ms. Allocated memory is still 123.7 MB. Free memory was 86.9 MB in the beginning and 73.8 MB in the end (delta: 13.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Witness Printer took 6.49 ms. Allocated memory is still 123.7 MB. Free memory was 73.8 MB in the beginning and 73.3 MB in the end (delta: 511.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 19]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of to_int at line 33, overapproximation of someBinaryDOUBLEComparisonOperation at line 28, overapproximation of someBinaryArithmeticDOUBLEoperation at line 29. Possible FailurePath: [L25] int r; [L26] double a, x; [L27] a = __VERIFIER_nondet_double() [L14] COND FALSE !(!cond) [L29] x = a / 2.0 [L30] r = 0 [L32] COND TRUE 1 [L17] COND TRUE !(cond) [L19] reach_error() - UnprovableResult [Line: 19]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 12 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.2s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=12occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-11-07 01:59:14,899 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90327310-f68a-4b33-b7e9-23f03f304e7c/bin/utaipan-UUZaoUuFF8/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_90327310-f68a-4b33-b7e9-23f03f304e7c/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90327310-f68a-4b33-b7e9-23f03f304e7c/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90327310-f68a-4b33-b7e9-23f03f304e7c/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90327310-f68a-4b33-b7e9-23f03f304e7c/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/freire1_valuebound5.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90327310-f68a-4b33-b7e9-23f03f304e7c/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90327310-f68a-4b33-b7e9-23f03f304e7c/bin/utaipan-UUZaoUuFF8 --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-47ea020 [2021-11-07 01:59:17,981 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:59:17,985 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:59:18,051 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:59:18,052 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:59:18,058 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:59:18,061 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:59:18,066 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:59:18,070 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:59:18,080 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:59:18,082 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:59:18,084 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:59:18,085 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:59:18,088 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:59:18,091 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:59:18,097 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:59:18,100 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:59:18,101 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:59:18,104 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:59:18,117 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:59:18,120 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:59:18,122 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:59:18,127 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:59:18,129 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:59:18,140 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:59:18,141 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:59:18,141 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:59:18,144 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:59:18,145 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:59:18,146 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:59:18,147 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:59:18,148 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:59:18,150 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:59:18,151 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:59:18,153 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:59:18,154 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:59:18,155 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:59:18,155 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:59:18,156 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:59:18,158 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:59:18,159 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:59:18,160 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90327310-f68a-4b33-b7e9-23f03f304e7c/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-07 01:59:18,211 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:59:18,211 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:59:18,213 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:59:18,213 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:59:18,213 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:59:18,214 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:59:18,214 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:59:18,214 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:59:18,214 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:59:18,216 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:59:18,216 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 01:59:18,216 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 01:59:18,217 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:59:18,217 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:59:18,217 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:59:18,217 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:59:18,218 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:59:18,218 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 01:59:18,218 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 01:59:18,219 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 01:59:18,219 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:59:18,219 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:59:18,220 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:59:18,220 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:59:18,220 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 01:59:18,221 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:59:18,221 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:59:18,221 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:59:18,222 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:59:18,222 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:59:18,222 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-07 01:59:18,222 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 01:59:18,223 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:59:18,223 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:59:18,223 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:59:18,224 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_90327310-f68a-4b33-b7e9-23f03f304e7c/bin/utaipan-UUZaoUuFF8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90327310-f68a-4b33-b7e9-23f03f304e7c/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6437fdc3c0b95eb5fb3a7e28606efb50e2431074b1de5f5cf4c718827adac36d [2021-11-07 01:59:18,721 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:59:18,755 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:59:18,758 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:59:18,760 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:59:18,760 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:59:18,764 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90327310-f68a-4b33-b7e9-23f03f304e7c/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/nla-digbench-scaling/freire1_valuebound5.c [2021-11-07 01:59:18,856 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90327310-f68a-4b33-b7e9-23f03f304e7c/bin/utaipan-UUZaoUuFF8/data/245aa2305/d23d4aa500984951ac92ad7bf45b73b6/FLAG8191d5dce [2021-11-07 01:59:19,509 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:59:19,511 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90327310-f68a-4b33-b7e9-23f03f304e7c/sv-benchmarks/c/nla-digbench-scaling/freire1_valuebound5.c [2021-11-07 01:59:19,519 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90327310-f68a-4b33-b7e9-23f03f304e7c/bin/utaipan-UUZaoUuFF8/data/245aa2305/d23d4aa500984951ac92ad7bf45b73b6/FLAG8191d5dce [2021-11-07 01:59:19,859 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90327310-f68a-4b33-b7e9-23f03f304e7c/bin/utaipan-UUZaoUuFF8/data/245aa2305/d23d4aa500984951ac92ad7bf45b73b6 [2021-11-07 01:59:19,865 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:59:19,868 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:59:19,873 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:59:19,873 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:59:19,879 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:59:19,879 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:59:19" (1/1) ... [2021-11-07 01:59:19,881 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17dd96be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:59:19, skipping insertion in model container [2021-11-07 01:59:19,882 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:59:19" (1/1) ... [2021-11-07 01:59:19,892 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:59:19,928 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:59:20,092 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_90327310-f68a-4b33-b7e9-23f03f304e7c/sv-benchmarks/c/nla-digbench-scaling/freire1_valuebound5.c[712,725] [2021-11-07 01:59:20,115 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:59:20,133 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 01:59:20,148 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_90327310-f68a-4b33-b7e9-23f03f304e7c/sv-benchmarks/c/nla-digbench-scaling/freire1_valuebound5.c[712,725] [2021-11-07 01:59:20,155 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:59:20,216 INFO L208 MainTranslator]: Completed translation [2021-11-07 01:59:20,217 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:59:20 WrapperNode [2021-11-07 01:59:20,218 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:59:20,219 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 01:59:20,219 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 01:59:20,220 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 01:59:20,229 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:59:20" (1/1) ... [2021-11-07 01:59:20,241 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:59:20" (1/1) ... [2021-11-07 01:59:20,272 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 01:59:20,274 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 01:59:20,275 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 01:59:20,275 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 01:59:20,285 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:59:20" (1/1) ... [2021-11-07 01:59:20,286 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:59:20" (1/1) ... [2021-11-07 01:59:20,296 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:59:20" (1/1) ... [2021-11-07 01:59:20,297 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:59:20" (1/1) ... [2021-11-07 01:59:20,320 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:59:20" (1/1) ... [2021-11-07 01:59:20,337 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:59:20" (1/1) ... [2021-11-07 01:59:20,339 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:59:20" (1/1) ... [2021-11-07 01:59:20,343 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 01:59:20,345 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 01:59:20,345 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 01:59:20,345 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 01:59:20,346 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:59:20" (1/1) ... [2021-11-07 01:59:20,355 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:59:20,369 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90327310-f68a-4b33-b7e9-23f03f304e7c/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:59:20,384 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90327310-f68a-4b33-b7e9-23f03f304e7c/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 01:59:20,388 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90327310-f68a-4b33-b7e9-23f03f304e7c/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 01:59:20,433 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-07 01:59:20,434 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 01:59:20,434 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 01:59:20,434 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 01:59:26,219 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 01:59:26,219 INFO L299 CfgBuilder]: Removed 11 assume(true) statements. [2021-11-07 01:59:26,221 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:59:26 BoogieIcfgContainer [2021-11-07 01:59:26,222 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 01:59:26,224 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 01:59:26,224 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 01:59:26,228 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 01:59:26,229 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:59:19" (1/3) ... [2021-11-07 01:59:26,230 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c67a0d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:59:26, skipping insertion in model container [2021-11-07 01:59:26,230 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:59:20" (2/3) ... [2021-11-07 01:59:26,231 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c67a0d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:59:26, skipping insertion in model container [2021-11-07 01:59:26,231 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:59:26" (3/3) ... [2021-11-07 01:59:26,233 INFO L111 eAbstractionObserver]: Analyzing ICFG freire1_valuebound5.c [2021-11-07 01:59:26,240 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 01:59:26,240 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-07 01:59:26,304 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 01:59:26,312 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 [2021-11-07 01:59:26,312 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-07 01:59:26,328 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 16 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:59:26,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-07 01:59:26,334 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:59:26,335 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:59:26,336 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:59:26,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:59:26,343 INFO L85 PathProgramCache]: Analyzing trace with hash 1804972333, now seen corresponding path program 1 times [2021-11-07 01:59:26,358 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:59:26,358 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [137507364] [2021-11-07 01:59:26,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:59:26,360 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:59:26,360 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90327310-f68a-4b33-b7e9-23f03f304e7c/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:59:26,369 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90327310-f68a-4b33-b7e9-23f03f304e7c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:59:26,374 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90327310-f68a-4b33-b7e9-23f03f304e7c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 01:59:26,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:59:26,876 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-07 01:59:26,880 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:59:26,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:59:26,952 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:59:27,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:59:27,001 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:59:27,002 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [137507364] [2021-11-07 01:59:27,002 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [137507364] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:59:27,003 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:59:27,003 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-07 01:59:27,005 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658728883] [2021-11-07 01:59:27,011 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-07 01:59:27,012 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:59:27,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-07 01:59:27,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 01:59:27,042 INFO L87 Difference]: Start difference. First operand has 17 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 16 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:59:27,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:59:27,061 INFO L93 Difference]: Finished difference Result 31 states and 40 transitions. [2021-11-07 01:59:27,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 01:59:27,064 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-11-07 01:59:27,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:59:27,074 INFO L225 Difference]: With dead ends: 31 [2021-11-07 01:59:27,075 INFO L226 Difference]: Without dead ends: 13 [2021-11-07 01:59:27,078 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 01:59:27,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2021-11-07 01:59:27,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2021-11-07 01:59:27,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 12 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:59:27,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2021-11-07 01:59:27,121 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 7 [2021-11-07 01:59:27,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:59:27,121 INFO L470 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2021-11-07 01:59:27,122 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:59:27,122 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2021-11-07 01:59:27,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-07 01:59:27,122 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:59:27,123 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:59:27,139 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90327310-f68a-4b33-b7e9-23f03f304e7c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-11-07 01:59:27,323 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90327310-f68a-4b33-b7e9-23f03f304e7c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:59:27,324 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:59:27,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:59:27,325 INFO L85 PathProgramCache]: Analyzing trace with hash 1806819375, now seen corresponding path program 1 times [2021-11-07 01:59:27,326 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:59:27,326 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1206621557] [2021-11-07 01:59:27,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:59:27,326 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:59:27,327 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90327310-f68a-4b33-b7e9-23f03f304e7c/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:59:27,328 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90327310-f68a-4b33-b7e9-23f03f304e7c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:59:27,342 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90327310-f68a-4b33-b7e9-23f03f304e7c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-07 01:59:29,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:59:29,038 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-07 01:59:29,040 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:00:23,556 WARN L860 $PredicateComparison]: unable to prove that (exists ((ULTIMATE.start_main_~a~0 (_ FloatingPoint 11 53))) (let ((.cse0 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))) (and (fp.leq ULTIMATE.start_main_~a~0 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv5 32))) (fp.geq ULTIMATE.start_main_~a~0 .cse0) (let ((.cse1 (= ((_ fp.to_sbv 32) roundTowardZero (fp.add roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.sub roundNearestTiesToEven .cse0 ULTIMATE.start_main_~a~0) .cse0) (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (_ bv2 32)) (fp.div roundNearestTiesToEven ULTIMATE.start_main_~a~0 ((_ to_fp 11 53) roundNearestTiesToEven 2.0))))) (_ bv0 32)))) (or (and (not .cse1) (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32))) (and (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv1 32)) .cse1)))))) is different from true [2021-11-07 02:00:38,410 WARN L838 $PredicateComparison]: unable to prove that (exists ((ULTIMATE.start_main_~a~0 (_ 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 ULTIMATE.start_main_~a~0) .cse0) (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (_ bv2 32)) (fp.div roundNearestTiesToEven ULTIMATE.start_main_~a~0 ((_ to_fp 11 53) roundNearestTiesToEven 2.0))))) (_ bv0 32))) (fp.leq ULTIMATE.start_main_~a~0 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv5 32))) (fp.geq ULTIMATE.start_main_~a~0 .cse0)))) is different from false [2021-11-07 02:00:40,450 WARN L860 $PredicateComparison]: unable to prove that (exists ((ULTIMATE.start_main_~a~0 (_ 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 ULTIMATE.start_main_~a~0) .cse0) (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (_ bv2 32)) (fp.div roundNearestTiesToEven ULTIMATE.start_main_~a~0 ((_ to_fp 11 53) roundNearestTiesToEven 2.0))))) (_ bv0 32))) (fp.leq ULTIMATE.start_main_~a~0 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv5 32))) (fp.geq ULTIMATE.start_main_~a~0 .cse0)))) is different from true [2021-11-07 02:00:40,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:00:40,451 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:00:46,845 WARN L838 $PredicateComparison]: unable to prove that (= ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (bvmul c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0)) c_ULTIMATE.start_main_~a~0) ((_ to_fp 11 53) c_currentRoundingMode c_ULTIMATE.start_main_~r~0)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) c_ULTIMATE.start_main_~x~0))) (_ bv0 32)) is different from false [2021-11-07 02:00:48,908 WARN L860 $PredicateComparison]: unable to prove that (= ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (bvmul c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0)) c_ULTIMATE.start_main_~a~0) ((_ to_fp 11 53) c_currentRoundingMode c_ULTIMATE.start_main_~r~0)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) c_ULTIMATE.start_main_~x~0))) (_ bv0 32)) is different from true [2021-11-07 02:00:55,071 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) .cse0)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~a~0 ((_ to_fp 11 53) c_currentRoundingMode 2.0)))))) is different from false [2021-11-07 02:00:57,127 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) .cse0)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~a~0 ((_ to_fp 11 53) c_currentRoundingMode 2.0)))))) is different from true [2021-11-07 02:01:07,531 WARN L838 $PredicateComparison]: unable to prove that (or (= c_ULTIMATE.start_assume_abort_if_not_~cond (_ 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) .cse0)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~a~0 ((_ to_fp 11 53) c_currentRoundingMode 2.0))))))) is different from false [2021-11-07 02:01:21,964 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ULTIMATE.start_main_~a~0_9 (_ FloatingPoint 11 53))) (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))) (or (not (fp.leq v_ULTIMATE.start_main_~a~0_9 ((_ to_fp 11 53) c_currentRoundingMode (_ bv5 32)))) (not (fp.geq v_ULTIMATE.start_main_~a~0_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_9) .cse0) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) (fp.div c_currentRoundingMode v_ULTIMATE.start_main_~a~0_9 ((_ to_fp 11 53) c_currentRoundingMode 2.0))))) (_ bv0 32))))) is different from false [2021-11-07 02:01:24,017 WARN L860 $PredicateComparison]: unable to prove that (forall ((v_ULTIMATE.start_main_~a~0_9 (_ FloatingPoint 11 53))) (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))) (or (not (fp.leq v_ULTIMATE.start_main_~a~0_9 ((_ to_fp 11 53) c_currentRoundingMode (_ bv5 32)))) (not (fp.geq v_ULTIMATE.start_main_~a~0_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_9) .cse0) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) (fp.div c_currentRoundingMode v_ULTIMATE.start_main_~a~0_9 ((_ to_fp 11 53) c_currentRoundingMode 2.0))))) (_ bv0 32))))) is different from true [2021-11-07 02:01:24,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:01:24,018 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:01:24,018 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1206621557] [2021-11-07 02:01:24,018 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1206621557] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:01:24,019 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:01:24,019 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 12 [2021-11-07 02:01:24,019 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962631641] [2021-11-07 02:01:24,021 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-07 02:01:24,021 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:01:24,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-07 02:01:24,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=29, Unknown=10, NotChecked=90, Total=156 [2021-11-07 02:01:24,024 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand has 13 states, 13 states have (on average 1.0769230769230769) internal successors, (14), 12 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:01:26,189 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ULTIMATE.start_main_~a~0_9 (_ FloatingPoint 11 53))) (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))) (or (not (fp.leq v_ULTIMATE.start_main_~a~0_9 ((_ to_fp 11 53) c_currentRoundingMode (_ bv5 32)))) (not (fp.geq v_ULTIMATE.start_main_~a~0_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_9) .cse0) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) (fp.div c_currentRoundingMode v_ULTIMATE.start_main_~a~0_9 ((_ to_fp 11 53) c_currentRoundingMode 2.0))))) (_ bv0 32))))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false [2021-11-07 02:01:28,239 WARN L860 $PredicateComparison]: unable to prove that (and (forall ((v_ULTIMATE.start_main_~a~0_9 (_ FloatingPoint 11 53))) (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))) (or (not (fp.leq v_ULTIMATE.start_main_~a~0_9 ((_ to_fp 11 53) c_currentRoundingMode (_ bv5 32)))) (not (fp.geq v_ULTIMATE.start_main_~a~0_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_9) .cse0) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) (fp.div c_currentRoundingMode v_ULTIMATE.start_main_~a~0_9 ((_ to_fp 11 53) c_currentRoundingMode 2.0))))) (_ bv0 32))))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2021-11-07 02:01:32,167 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 (= c_ULTIMATE.start_assume_abort_if_not_~cond (_ bv0 32))) (.cse3 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))) (and (let ((.cse2 (fp.geq c_ULTIMATE.start_main_~a~0 .cse3)) (.cse1 (fp.leq c_ULTIMATE.start_main_~a~0 ((_ 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 (_ bv1 32)) .cse1))) (= c_currentRoundingMode roundNearestTiesToEven) (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) .cse3) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~a~0 ((_ to_fp 11 53) c_currentRoundingMode 2.0))))))))) is different from true [2021-11-07 02:01:34,649 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 .cse0) (fp.leq c_ULTIMATE.start_main_~a~0 ((_ 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) .cse0) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~a~0 ((_ to_fp 11 53) c_currentRoundingMode 2.0)))))))) is different from true [2021-11-07 02:01:36,700 WARN L838 $PredicateComparison]: unable to prove that (and (fp.geq c_ULTIMATE.start_main_~a~0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))) (= ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (bvmul c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0)) c_ULTIMATE.start_main_~a~0) ((_ to_fp 11 53) c_currentRoundingMode c_ULTIMATE.start_main_~r~0)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) c_ULTIMATE.start_main_~x~0))) (_ bv0 32)) (= c_ULTIMATE.start_main_~r~0 (_ bv0 32)) (fp.leq c_ULTIMATE.start_main_~a~0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv5 32))) (= c_ULTIMATE.start_main_~x~0 (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~a~0 ((_ to_fp 11 53) c_currentRoundingMode 2.0))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false [2021-11-07 02:01:38,764 WARN L860 $PredicateComparison]: unable to prove that (and (fp.geq c_ULTIMATE.start_main_~a~0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))) (= ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (bvmul c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0)) c_ULTIMATE.start_main_~a~0) ((_ to_fp 11 53) c_currentRoundingMode c_ULTIMATE.start_main_~r~0)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) c_ULTIMATE.start_main_~x~0))) (_ bv0 32)) (= c_ULTIMATE.start_main_~r~0 (_ bv0 32)) (fp.leq c_ULTIMATE.start_main_~a~0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv5 32))) (= c_ULTIMATE.start_main_~x~0 (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~a~0 ((_ to_fp 11 53) c_currentRoundingMode 2.0))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2021-11-07 02:01:44,896 WARN L207 SmtUtils]: Spent 5.21 s on a formula simplification that was a NOOP. DAG size: 32 [2021-11-07 02:02:00,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:02:00,279 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2021-11-07 02:02:00,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-07 02:02:00,280 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.0769230769230769) internal successors, (14), 12 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-11-07 02:02:00,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:02:00,281 INFO L225 Difference]: With dead ends: 17 [2021-11-07 02:02:00,281 INFO L226 Difference]: Without dead ends: 15 [2021-11-07 02:02:00,283 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 10 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 49.5s TimeCoverageRelationStatistics Valid=38, Invalid=42, Unknown=16, NotChecked=210, Total=306 [2021-11-07 02:02:00,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-11-07 02:02:00,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2021-11-07 02:02:00,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 14 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:02:00,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2021-11-07 02:02:00,288 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 7 [2021-11-07 02:02:00,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:02:00,288 INFO L470 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2021-11-07 02:02:00,289 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.0769230769230769) internal successors, (14), 12 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:02:00,289 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2021-11-07 02:02:00,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-07 02:02:00,289 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:02:00,290 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:02:00,309 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90327310-f68a-4b33-b7e9-23f03f304e7c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-07 02:02:00,494 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90327310-f68a-4b33-b7e9-23f03f304e7c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:02:00,495 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 02:02:00,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:02:00,496 INFO L85 PathProgramCache]: Analyzing trace with hash -1864186656, now seen corresponding path program 1 times [2021-11-07 02:02:00,497 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:02:00,497 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2063032250] [2021-11-07 02:02:00,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:02:00,498 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:02:00,498 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90327310-f68a-4b33-b7e9-23f03f304e7c/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:02:00,523 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90327310-f68a-4b33-b7e9-23f03f304e7c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:02:00,566 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90327310-f68a-4b33-b7e9-23f03f304e7c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-07 02:02:03,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:02:03,479 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-07 02:02:03,481 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:02:53,516 WARN L207 SmtUtils]: Spent 7.60 s on a formula simplification that was a NOOP. DAG size: 20 [2021-11-07 02:03:49,800 WARN L838 $PredicateComparison]: unable to prove that (exists ((ULTIMATE.start_main_~a~0 (_ FloatingPoint 11 53))) (let ((.cse2 (fp.div roundNearestTiesToEven ULTIMATE.start_main_~a~0 ((_ to_fp 11 53) roundNearestTiesToEven 2.0))) (.cse3 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))) (and (fp.leq ULTIMATE.start_main_~a~0 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv5 32))) (let ((.cse0 (= (_ bv0 32) ((_ fp.to_sbv 32) roundTowardZero (fp.add roundNearestTiesToEven (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv1 32)))) (fp.sub roundNearestTiesToEven (fp.sub roundNearestTiesToEven .cse1 ULTIMATE.start_main_~a~0) .cse1)) (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (_ bv2 32)) (fp.sub roundNearestTiesToEven .cse2 .cse3))))))) (or (and .cse0 (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv1 32))) (and (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32)) (not .cse0)))) (fp.gt .cse2 .cse3)))) is different from false [2021-11-07 02:03:51,851 WARN L860 $PredicateComparison]: unable to prove that (exists ((ULTIMATE.start_main_~a~0 (_ FloatingPoint 11 53))) (let ((.cse2 (fp.div roundNearestTiesToEven ULTIMATE.start_main_~a~0 ((_ to_fp 11 53) roundNearestTiesToEven 2.0))) (.cse3 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))) (and (fp.leq ULTIMATE.start_main_~a~0 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv5 32))) (let ((.cse0 (= (_ bv0 32) ((_ fp.to_sbv 32) roundTowardZero (fp.add roundNearestTiesToEven (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv1 32)))) (fp.sub roundNearestTiesToEven (fp.sub roundNearestTiesToEven .cse1 ULTIMATE.start_main_~a~0) .cse1)) (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (_ bv2 32)) (fp.sub roundNearestTiesToEven .cse2 .cse3))))))) (or (and .cse0 (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv1 32))) (and (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32)) (not .cse0)))) (fp.gt .cse2 .cse3)))) is different from true [2021-11-07 02:04:08,716 WARN L838 $PredicateComparison]: unable to prove that (exists ((ULTIMATE.start_main_~a~0 (_ FloatingPoint 11 53))) (let ((.cse0 (fp.div roundNearestTiesToEven ULTIMATE.start_main_~a~0 ((_ to_fp 11 53) roundNearestTiesToEven 2.0))) (.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))) (and (fp.leq ULTIMATE.start_main_~a~0 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv5 32))) (fp.gt .cse0 .cse1) (not (= (_ bv0 32) ((_ fp.to_sbv 32) roundTowardZero (fp.add roundNearestTiesToEven (let ((.cse2 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv1 32)))) (fp.sub roundNearestTiesToEven (fp.sub roundNearestTiesToEven .cse2 ULTIMATE.start_main_~a~0) .cse2)) (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (_ bv2 32)) (fp.sub roundNearestTiesToEven .cse0 .cse1))))))))) is different from false [2021-11-07 02:04:10,774 WARN L860 $PredicateComparison]: unable to prove that (exists ((ULTIMATE.start_main_~a~0 (_ FloatingPoint 11 53))) (let ((.cse0 (fp.div roundNearestTiesToEven ULTIMATE.start_main_~a~0 ((_ to_fp 11 53) roundNearestTiesToEven 2.0))) (.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))) (and (fp.leq ULTIMATE.start_main_~a~0 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv5 32))) (fp.gt .cse0 .cse1) (not (= (_ bv0 32) ((_ fp.to_sbv 32) roundTowardZero (fp.add roundNearestTiesToEven (let ((.cse2 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv1 32)))) (fp.sub roundNearestTiesToEven (fp.sub roundNearestTiesToEven .cse2 ULTIMATE.start_main_~a~0) .cse2)) (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (_ bv2 32)) (fp.sub roundNearestTiesToEven .cse0 .cse1))))))))) is different from true [2021-11-07 02:04:10,775 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2021-11-07 02:04:10,775 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:04:18,178 WARN L838 $PredicateComparison]: unable to prove that (= ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (bvmul c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0)) c_ULTIMATE.start_main_~a~0) ((_ to_fp 11 53) c_currentRoundingMode c_ULTIMATE.start_main_~r~0)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) c_ULTIMATE.start_main_~x~0))) (_ bv0 32)) is different from false [2021-11-07 02:04:20,248 WARN L860 $PredicateComparison]: unable to prove that (= ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (bvmul c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0)) c_ULTIMATE.start_main_~a~0) ((_ to_fp 11 53) c_currentRoundingMode c_ULTIMATE.start_main_~r~0)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) c_ULTIMATE.start_main_~x~0))) (_ bv0 32)) is different from true [2021-11-07 02:04:30,821 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode c_ULTIMATE.start_main_~r~0))) (or (= ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (let ((.cse0 (bvadd c_ULTIMATE.start_main_~r~0 (_ bv1 32)))) (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (bvmul .cse0 .cse0)) c_ULTIMATE.start_main_~a~0) ((_ to_fp 11 53) c_currentRoundingMode .cse0))) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) (fp.sub c_currentRoundingMode c_ULTIMATE.start_main_~x~0 .cse1)))) (_ bv0 32)) (not (fp.gt c_ULTIMATE.start_main_~x~0 .cse1)))) is different from false [2021-11-07 02:04:32,909 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode c_ULTIMATE.start_main_~r~0))) (or (= ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (let ((.cse0 (bvadd c_ULTIMATE.start_main_~r~0 (_ bv1 32)))) (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (bvmul .cse0 .cse0)) c_ULTIMATE.start_main_~a~0) ((_ to_fp 11 53) c_currentRoundingMode .cse0))) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) (fp.sub c_currentRoundingMode c_ULTIMATE.start_main_~x~0 .cse1)))) (_ bv0 32)) (not (fp.gt c_ULTIMATE.start_main_~x~0 .cse1)))) is different from true [2021-11-07 02:05:00,498 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~a~0 ((_ 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 c_ULTIMATE.start_main_~a~0) .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)))) is different from false [2021-11-07 02:05:02,581 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~a~0 ((_ 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 c_ULTIMATE.start_main_~a~0) .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)))) is different from true [2021-11-07 02:05:17,305 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~a~0 ((_ 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 c_ULTIMATE.start_main_~a~0) .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)) (= c_ULTIMATE.start_assume_abort_if_not_~cond (_ bv0 32)))) is different from false [2021-11-07 02:05:19,384 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~a~0 ((_ 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 c_ULTIMATE.start_main_~a~0) .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)) (= c_ULTIMATE.start_assume_abort_if_not_~cond (_ bv0 32)))) is different from true [2021-11-07 02:05:36,328 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ULTIMATE.start_main_~a~0_10 (_ FloatingPoint 11 53))) (let ((.cse1 (fp.div c_currentRoundingMode v_ULTIMATE.start_main_~a~0_10 ((_ 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_10) .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_10 ((_ to_fp 11 53) c_currentRoundingMode (_ bv5 32))))))) is different from false [2021-11-07 02:05:38,398 WARN L860 $PredicateComparison]: unable to prove that (forall ((v_ULTIMATE.start_main_~a~0_10 (_ FloatingPoint 11 53))) (let ((.cse1 (fp.div c_currentRoundingMode v_ULTIMATE.start_main_~a~0_10 ((_ 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_10) .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_10 ((_ to_fp 11 53) c_currentRoundingMode (_ bv5 32))))))) is different from true [2021-11-07 02:05:38,398 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2021-11-07 02:05:38,399 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:05:38,399 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2063032250] [2021-11-07 02:05:38,399 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2063032250] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:05:38,399 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [749660731] [2021-11-07 02:05:38,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:05:38,400 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 02:05:38,400 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90327310-f68a-4b33-b7e9-23f03f304e7c/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 02:05:38,401 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90327310-f68a-4b33-b7e9-23f03f304e7c/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 02:05:38,402 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90327310-f68a-4b33-b7e9-23f03f304e7c/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2021-11-07 02:05:42,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:05:42,535 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-07 02:05:42,537 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:07:17,803 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2021-11-07 02:07:17,803 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:08:24,938 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_#t~nondet7_6| (_ FloatingPoint 11 53))) (let ((.cse1 (fp.div c_currentRoundingMode |v_ULTIMATE.start_main_#t~nondet7_6| ((_ 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_#t~nondet7_6|) .cse0)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) (fp.sub c_currentRoundingMode .cse1 .cse2)))) (_ bv0 32)) (not (fp.leq |v_ULTIMATE.start_main_#t~nondet7_6| ((_ to_fp 11 53) c_currentRoundingMode (_ bv5 32)))) (not (fp.gt .cse1 .cse2))))) is different from false [2021-11-07 02:08:27,009 WARN L860 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_#t~nondet7_6| (_ FloatingPoint 11 53))) (let ((.cse1 (fp.div c_currentRoundingMode |v_ULTIMATE.start_main_#t~nondet7_6| ((_ 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_#t~nondet7_6|) .cse0)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) (fp.sub c_currentRoundingMode .cse1 .cse2)))) (_ bv0 32)) (not (fp.leq |v_ULTIMATE.start_main_#t~nondet7_6| ((_ to_fp 11 53) c_currentRoundingMode (_ bv5 32)))) (not (fp.gt .cse1 .cse2))))) is different from true [2021-11-07 02:08:27,010 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2021-11-07 02:08:27,010 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [749660731] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:08:27,010 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1091483729] [2021-11-07 02:08:27,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:08:27,011 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 02:08:27,011 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90327310-f68a-4b33-b7e9-23f03f304e7c/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 02:08:27,013 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90327310-f68a-4b33-b7e9-23f03f304e7c/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 02:08:27,014 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90327310-f68a-4b33-b7e9-23f03f304e7c/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process