./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-benchs/inv_Newton.c.p+cfa-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57435a9b-7c48-4c4d-9f96-7399b87f7cbb/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57435a9b-7c48-4c4d-9f96-7399b87f7cbb/bin/utaipan-eEHZpOm5b7/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57435a9b-7c48-4c4d-9f96-7399b87f7cbb/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57435a9b-7c48-4c4d-9f96-7399b87f7cbb/bin/utaipan-eEHZpOm5b7/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/inv_Newton.c.p+cfa-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57435a9b-7c48-4c4d-9f96-7399b87f7cbb/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57435a9b-7c48-4c4d-9f96-7399b87f7cbb/bin/utaipan-eEHZpOm5b7 --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 f807884dfe796c964ede5317ceef5bdc8dc93cb7b5e0611cc0dc63f2d13b17a0 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 18:11:29,352 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 18:11:29,354 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 18:11:29,384 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 18:11:29,385 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 18:11:29,386 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 18:11:29,388 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 18:11:29,390 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 18:11:29,392 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 18:11:29,393 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 18:11:29,395 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 18:11:29,396 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 18:11:29,397 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 18:11:29,398 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 18:11:29,399 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 18:11:29,401 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 18:11:29,402 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 18:11:29,403 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 18:11:29,405 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 18:11:29,407 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 18:11:29,409 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 18:11:29,413 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 18:11:29,415 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 18:11:29,416 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 18:11:29,420 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 18:11:29,423 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 18:11:29,424 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 18:11:29,425 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 18:11:29,429 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 18:11:29,430 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 18:11:29,431 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 18:11:29,432 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 18:11:29,433 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 18:11:29,435 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 18:11:29,436 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 18:11:29,437 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 18:11:29,437 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 18:11:29,438 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 18:11:29,438 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 18:11:29,439 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 18:11:29,439 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 18:11:29,440 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57435a9b-7c48-4c4d-9f96-7399b87f7cbb/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-25 18:11:29,486 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 18:11:29,486 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 18:11:29,487 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 18:11:29,487 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 18:11:29,494 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 18:11:29,494 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 18:11:29,494 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 18:11:29,495 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 18:11:29,495 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 18:11:29,495 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-25 18:11:29,496 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 18:11:29,496 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 18:11:29,496 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-25 18:11:29,497 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-25 18:11:29,497 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 18:11:29,497 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-25 18:11:29,497 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-25 18:11:29,498 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-25 18:11:29,498 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 18:11:29,499 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-25 18:11:29,499 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 18:11:29,499 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-25 18:11:29,499 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 18:11:29,499 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 18:11:29,500 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 18:11:29,500 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 18:11:29,501 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-25 18:11:29,502 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 18:11:29,502 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 18:11:29,502 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 18:11:29,502 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 18:11:29,503 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 18:11:29,503 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 18:11:29,503 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 18:11:29,503 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 18:11:29,504 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 18:11:29,504 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-25 18:11:29,504 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-25 18:11:29,504 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 18:11:29,504 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 18:11:29,505 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 18:11:29,505 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_57435a9b-7c48-4c4d-9f96-7399b87f7cbb/bin/utaipan-eEHZpOm5b7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57435a9b-7c48-4c4d-9f96-7399b87f7cbb/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f807884dfe796c964ede5317ceef5bdc8dc93cb7b5e0611cc0dc63f2d13b17a0 [2021-11-25 18:11:29,767 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 18:11:29,787 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 18:11:29,790 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 18:11:29,791 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 18:11:29,791 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 18:11:29,793 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57435a9b-7c48-4c4d-9f96-7399b87f7cbb/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/float-benchs/inv_Newton.c.p+cfa-reducer.c [2021-11-25 18:11:29,866 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57435a9b-7c48-4c4d-9f96-7399b87f7cbb/bin/utaipan-eEHZpOm5b7/data/e2e845d0f/eb52dbda262d4020a10c36c6427cd790/FLAGf5d21dc9e [2021-11-25 18:11:30,388 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 18:11:30,394 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57435a9b-7c48-4c4d-9f96-7399b87f7cbb/sv-benchmarks/c/float-benchs/inv_Newton.c.p+cfa-reducer.c [2021-11-25 18:11:30,404 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57435a9b-7c48-4c4d-9f96-7399b87f7cbb/bin/utaipan-eEHZpOm5b7/data/e2e845d0f/eb52dbda262d4020a10c36c6427cd790/FLAGf5d21dc9e [2021-11-25 18:11:30,751 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57435a9b-7c48-4c4d-9f96-7399b87f7cbb/bin/utaipan-eEHZpOm5b7/data/e2e845d0f/eb52dbda262d4020a10c36c6427cd790 [2021-11-25 18:11:30,757 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 18:11:30,758 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 18:11:30,761 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 18:11:30,761 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 18:11:30,764 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 18:11:30,765 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:11:30" (1/1) ... [2021-11-25 18:11:30,768 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27ade67d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:11:30, skipping insertion in model container [2021-11-25 18:11:30,769 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:11:30" (1/1) ... [2021-11-25 18:11:30,776 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 18:11:30,799 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 18:11:30,991 WARN L230 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_57435a9b-7c48-4c4d-9f96-7399b87f7cbb/sv-benchmarks/c/float-benchs/inv_Newton.c.p+cfa-reducer.c[2006,2019] [2021-11-25 18:11:30,995 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 18:11:31,003 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 18:11:31,024 WARN L230 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_57435a9b-7c48-4c4d-9f96-7399b87f7cbb/sv-benchmarks/c/float-benchs/inv_Newton.c.p+cfa-reducer.c[2006,2019] [2021-11-25 18:11:31,026 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 18:11:31,039 INFO L208 MainTranslator]: Completed translation [2021-11-25 18:11:31,040 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:11:31 WrapperNode [2021-11-25 18:11:31,040 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 18:11:31,041 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 18:11:31,041 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 18:11:31,041 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 18:11:31,049 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:11:31" (1/1) ... [2021-11-25 18:11:31,056 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:11:31" (1/1) ... [2021-11-25 18:11:31,075 INFO L137 Inliner]: procedures = 18, calls = 20, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 98 [2021-11-25 18:11:31,076 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 18:11:31,077 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 18:11:31,077 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 18:11:31,077 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 18:11:31,085 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:11:31" (1/1) ... [2021-11-25 18:11:31,085 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:11:31" (1/1) ... [2021-11-25 18:11:31,087 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:11:31" (1/1) ... [2021-11-25 18:11:31,087 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:11:31" (1/1) ... [2021-11-25 18:11:31,094 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:11:31" (1/1) ... [2021-11-25 18:11:31,096 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:11:31" (1/1) ... [2021-11-25 18:11:31,097 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:11:31" (1/1) ... [2021-11-25 18:11:31,099 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 18:11:31,100 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 18:11:31,100 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 18:11:31,101 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 18:11:31,102 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:11:31" (1/1) ... [2021-11-25 18:11:31,109 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 18:11:31,121 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57435a9b-7c48-4c4d-9f96-7399b87f7cbb/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:11:31,133 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57435a9b-7c48-4c4d-9f96-7399b87f7cbb/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 18:11:31,142 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57435a9b-7c48-4c4d-9f96-7399b87f7cbb/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 18:11:31,176 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 18:11:31,177 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-25 18:11:31,177 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-25 18:11:31,177 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-11-25 18:11:31,177 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-25 18:11:31,177 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-11-25 18:11:31,178 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 18:11:31,178 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 18:11:31,178 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-25 18:11:31,178 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-25 18:11:31,247 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 18:11:31,249 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 18:11:31,378 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 18:11:31,389 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 18:11:31,390 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-25 18:11:31,392 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:11:31 BoogieIcfgContainer [2021-11-25 18:11:31,392 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 18:11:31,394 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 18:11:31,394 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 18:11:31,397 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 18:11:31,397 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 06:11:30" (1/3) ... [2021-11-25 18:11:31,398 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1613ec7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:11:31, skipping insertion in model container [2021-11-25 18:11:31,398 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:11:31" (2/3) ... [2021-11-25 18:11:31,399 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1613ec7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:11:31, skipping insertion in model container [2021-11-25 18:11:31,399 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:11:31" (3/3) ... [2021-11-25 18:11:31,400 INFO L111 eAbstractionObserver]: Analyzing ICFG inv_Newton.c.p+cfa-reducer.c [2021-11-25 18:11:31,405 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 18:11:31,405 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-25 18:11:31,451 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 18:11:31,458 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 [2021-11-25 18:11:31,458 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-25 18:11:31,486 INFO L276 IsEmpty]: Start isEmpty. Operand has 19 states, 17 states have (on average 1.588235294117647) internal successors, (27), 18 states have internal predecessors, (27), 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) [2021-11-25 18:11:31,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-25 18:11:31,491 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:11:31,492 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:11:31,492 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:11:31,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:11:31,509 INFO L85 PathProgramCache]: Analyzing trace with hash 1934553295, now seen corresponding path program 1 times [2021-11-25 18:11:31,518 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:11:31,534 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056118329] [2021-11-25 18:11:31,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:11:31,535 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:11:31,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:11:31,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:11:31,822 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:11:31,822 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056118329] [2021-11-25 18:11:31,823 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2056118329] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:11:31,823 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:11:31,823 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 18:11:31,825 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430221740] [2021-11-25 18:11:31,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:11:31,829 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 18:11:31,829 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:11:31,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 18:11:31,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 18:11:31,859 INFO L87 Difference]: Start difference. First operand has 19 states, 17 states have (on average 1.588235294117647) internal successors, (27), 18 states have internal predecessors, (27), 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 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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) [2021-11-25 18:11:31,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:11:31,945 INFO L93 Difference]: Finished difference Result 45 states and 63 transitions. [2021-11-25 18:11:31,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 18:11:31,949 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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 10 [2021-11-25 18:11:31,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:11:31,957 INFO L225 Difference]: With dead ends: 45 [2021-11-25 18:11:31,957 INFO L226 Difference]: Without dead ends: 32 [2021-11-25 18:11:31,960 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-25 18:11:31,968 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 32 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 18:11:31,972 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 56 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 18:11:31,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-11-25 18:11:31,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 18. [2021-11-25 18:11:32,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.411764705882353) internal successors, (24), 17 states have internal predecessors, (24), 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) [2021-11-25 18:11:32,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 24 transitions. [2021-11-25 18:11:32,002 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 24 transitions. Word has length 10 [2021-11-25 18:11:32,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:11:32,002 INFO L470 AbstractCegarLoop]: Abstraction has 18 states and 24 transitions. [2021-11-25 18:11:32,003 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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) [2021-11-25 18:11:32,003 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 24 transitions. [2021-11-25 18:11:32,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-25 18:11:32,004 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:11:32,004 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:11:32,004 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-25 18:11:32,004 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:11:32,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:11:32,005 INFO L85 PathProgramCache]: Analyzing trace with hash 1483588724, now seen corresponding path program 1 times [2021-11-25 18:11:32,006 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:11:32,006 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589456012] [2021-11-25 18:11:32,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:11:32,007 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:11:32,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:11:32,080 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:11:32,081 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:11:32,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589456012] [2021-11-25 18:11:32,081 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [589456012] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:11:32,081 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:11:32,082 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 18:11:32,082 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927561129] [2021-11-25 18:11:32,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:11:32,083 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 18:11:32,084 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:11:32,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 18:11:32,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 18:11:32,085 INFO L87 Difference]: Start difference. First operand 18 states and 24 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 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) [2021-11-25 18:11:32,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:11:32,151 INFO L93 Difference]: Finished difference Result 43 states and 56 transitions. [2021-11-25 18:11:32,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-25 18:11:32,152 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 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 14 [2021-11-25 18:11:32,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:11:32,153 INFO L225 Difference]: With dead ends: 43 [2021-11-25 18:11:32,154 INFO L226 Difference]: Without dead ends: 36 [2021-11-25 18:11:32,155 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-25 18:11:32,158 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 30 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 18:11:32,161 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [30 Valid, 66 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 18:11:32,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2021-11-25 18:11:32,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 19. [2021-11-25 18:11:32,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 18 states have internal predecessors, (25), 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) [2021-11-25 18:11:32,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 25 transitions. [2021-11-25 18:11:32,172 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 25 transitions. Word has length 14 [2021-11-25 18:11:32,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:11:32,173 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 25 transitions. [2021-11-25 18:11:32,174 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 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) [2021-11-25 18:11:32,175 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 25 transitions. [2021-11-25 18:11:32,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-25 18:11:32,176 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:11:32,176 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:11:32,177 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-25 18:11:32,177 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:11:32,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:11:32,178 INFO L85 PathProgramCache]: Analyzing trace with hash 2029187665, now seen corresponding path program 1 times [2021-11-25 18:11:32,179 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:11:32,179 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875703630] [2021-11-25 18:11:32,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:11:32,180 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:11:32,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:11:32,282 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-25 18:11:32,282 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:11:32,282 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875703630] [2021-11-25 18:11:32,283 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [875703630] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:11:32,283 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:11:32,283 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 18:11:32,284 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107529257] [2021-11-25 18:11:32,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:11:32,284 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 18:11:32,285 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:11:32,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 18:11:32,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 18:11:32,286 INFO L87 Difference]: Start difference. First operand 19 states and 25 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 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) [2021-11-25 18:11:32,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:11:32,346 INFO L93 Difference]: Finished difference Result 40 states and 49 transitions. [2021-11-25 18:11:32,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-25 18:11:32,347 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 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 14 [2021-11-25 18:11:32,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:11:32,348 INFO L225 Difference]: With dead ends: 40 [2021-11-25 18:11:32,348 INFO L226 Difference]: Without dead ends: 34 [2021-11-25 18:11:32,349 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-25 18:11:32,350 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 20 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 18:11:32,351 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 74 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 18:11:32,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2021-11-25 18:11:32,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 19. [2021-11-25 18:11:32,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 18 states have internal predecessors, (24), 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) [2021-11-25 18:11:32,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 24 transitions. [2021-11-25 18:11:32,375 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 24 transitions. Word has length 14 [2021-11-25 18:11:32,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:11:32,375 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 24 transitions. [2021-11-25 18:11:32,376 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 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) [2021-11-25 18:11:32,376 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 24 transitions. [2021-11-25 18:11:32,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-25 18:11:32,376 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:11:32,377 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:11:32,377 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-25 18:11:32,377 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:11:32,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:11:32,378 INFO L85 PathProgramCache]: Analyzing trace with hash 2046198326, now seen corresponding path program 1 times [2021-11-25 18:11:32,378 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:11:32,378 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190706824] [2021-11-25 18:11:32,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:11:32,379 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:11:32,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-25 18:11:32,436 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-25 18:11:32,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-25 18:11:32,487 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-25 18:11:32,487 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-25 18:11:32,488 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-25 18:11:32,490 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-25 18:11:32,494 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2021-11-25 18:11:32,497 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-25 18:11:32,532 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 06:11:32 BoogieIcfgContainer [2021-11-25 18:11:32,532 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-25 18:11:32,533 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-25 18:11:32,533 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-25 18:11:32,533 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-25 18:11:32,534 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:11:31" (3/4) ... [2021-11-25 18:11:32,537 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-25 18:11:32,537 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-25 18:11:32,538 INFO L158 Benchmark]: Toolchain (without parser) took 1778.98ms. Allocated memory was 140.5MB in the beginning and 174.1MB in the end (delta: 33.6MB). Free memory was 100.8MB in the beginning and 143.8MB in the end (delta: -43.1MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-25 18:11:32,538 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 140.5MB. Free memory is still 117.2MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-25 18:11:32,539 INFO L158 Benchmark]: CACSL2BoogieTranslator took 279.43ms. Allocated memory is still 140.5MB. Free memory was 100.6MB in the beginning and 112.4MB in the end (delta: -11.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-25 18:11:32,540 INFO L158 Benchmark]: Boogie Procedure Inliner took 35.11ms. Allocated memory is still 140.5MB. Free memory was 112.4MB in the beginning and 110.6MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-25 18:11:32,540 INFO L158 Benchmark]: Boogie Preprocessor took 22.95ms. Allocated memory is still 140.5MB. Free memory was 110.6MB in the beginning and 109.5MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-25 18:11:32,541 INFO L158 Benchmark]: RCFGBuilder took 291.78ms. Allocated memory is still 140.5MB. Free memory was 109.5MB in the beginning and 98.2MB in the end (delta: 11.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-25 18:11:32,542 INFO L158 Benchmark]: TraceAbstraction took 1138.75ms. Allocated memory was 140.5MB in the beginning and 174.1MB in the end (delta: 33.6MB). Free memory was 97.7MB in the beginning and 143.8MB in the end (delta: -46.1MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-25 18:11:32,542 INFO L158 Benchmark]: Witness Printer took 4.12ms. Allocated memory is still 174.1MB. Free memory is still 143.8MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-25 18:11:32,545 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 140.5MB. Free memory is still 117.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 279.43ms. Allocated memory is still 140.5MB. Free memory was 100.6MB in the beginning and 112.4MB in the end (delta: -11.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 35.11ms. Allocated memory is still 140.5MB. Free memory was 112.4MB in the beginning and 110.6MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 22.95ms. Allocated memory is still 140.5MB. Free memory was 110.6MB in the beginning and 109.5MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 291.78ms. Allocated memory is still 140.5MB. Free memory was 109.5MB in the beginning and 98.2MB in the end (delta: 11.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 1138.75ms. Allocated memory was 140.5MB in the beginning and 174.1MB in the end (delta: 33.6MB). Free memory was 97.7MB in the beginning and 143.8MB in the end (delta: -46.1MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 4.12ms. Allocated memory is still 174.1MB. Free memory is still 143.8MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 96]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of bitwiseAnd at line 45, overapproximation of someBinaryArithmeticDOUBLEoperation at line 53, overapproximation of someBinaryDOUBLEComparisonOperation at line 83, overapproximation of to_real at line 46. Possible FailurePath: [L1] int __return_main; [L17] double __return_104; [L20] double main__a; [L21] double main__r; [L22] main__a = __VERIFIER_nondet_double() [L23] int main____CPAchecker_TMP_0; VAL [__return_104=0, __return_main=0] [L24] COND TRUE main__a >= 20.0 VAL [__return_104=0, __return_main=0] [L26] COND TRUE main__a <= 30.0 [L28] main____CPAchecker_TMP_0 = 1 VAL [__return_104=0, __return_main=0, main____CPAchecker_TMP_0=1] [L30] COND TRUE main____CPAchecker_TMP_0 != 0 [L33] double __tmp_1; [L34] __tmp_1 = main__a [L35] double inv__A; [L36] inv__A = __tmp_1 [L37] double inv__xi; [L38] double inv__xsi; [L39] double inv__temp; [L40] signed int inv__cond; [L41] signed int inv__exp; [L42] union double_int inv__A_u; [L43] union double_int inv__xi_u; [L44] inv__A_u.d = inv__A [L45] EXPR inv__A_u.i [L45] inv__exp = ((signed int)(((inv__A_u.i) & 2146435072) >> 20)) - 1023 [L46] inv__xi_u.d = 1 [L47] inv__xi_u.i = (1023 - inv__exp) << 20 [L48] EXPR inv__xi_u.d [L48] inv__xi = inv__xi_u.d [L49] inv__cond = 1 VAL [__return_104=0, __return_main=0, __tmp_1=2145386501, inv__A=2145386501, inv__A_u={4:0}, inv__cond=1, inv__exp=-1023, inv__xi=2145386499, inv__xi_u={5:0}, main____CPAchecker_TMP_0=1, main__a=2145386501] [L51] COND TRUE !(inv__cond == 0) [L53] inv__xsi = (2 * inv__xi) - ((inv__A * inv__xi) * inv__xi) [L54] inv__temp = inv__xsi - inv__xi [L55] int inv____CPAchecker_TMP_0; VAL [__return_104=0, __return_main=0, __tmp_1=2145386501, inv__A=2145386501, inv__A_u={4:0}, inv__cond=1, inv__exp=-1023, inv__xi=2145386499, inv__xi_u={5:0}, main____CPAchecker_TMP_0=1, main__a=2145386501] [L56] COND FALSE !(inv__temp > 1.0E-10) VAL [__return_104=0, __return_main=0, __tmp_1=2145386501, inv__A=2145386501, inv__A_u={4:0}, inv__cond=1, inv__exp=-1023, inv__xi=2145386499, inv__xi_u={5:0}, main____CPAchecker_TMP_0=1, main__a=2145386501] [L67] COND FALSE !(inv__temp < -1.0E-10) [L73] inv____CPAchecker_TMP_0 = 0 VAL [__return_104=0, __return_main=0, __tmp_1=2145386501, inv____CPAchecker_TMP_0=0, inv__A=2145386501, inv__A_u={4:0}, inv__cond=1, inv__exp=-1023, inv__xi=2145386499, inv__xi_u={5:0}, main____CPAchecker_TMP_0=1, main__a=2145386501] [L61] inv__cond = inv____CPAchecker_TMP_0 [L62] inv__xi = inv__xsi VAL [__return_104=0, __return_main=0, __tmp_1=2145386501, inv____CPAchecker_TMP_0=0, inv__A=2145386501, inv__A_u={4:0}, inv__cond=0, inv__exp=-1023, inv__xi=2145386497, inv__xi_u={5:0}, inv__xsi=2145386497, main____CPAchecker_TMP_0=1, main__a=2145386501] [L51] COND FALSE !(!(inv__cond == 0)) [L80] __return_104 = inv__xi [L81] main__r = __return_104 [L82] int main____CPAchecker_TMP_1; VAL [__return_104=2145386497, __return_main=0, __tmp_1=2145386501, inv____CPAchecker_TMP_0=0, inv__A=2145386501, inv__A_u={4:0}, inv__cond=0, inv__exp=-1023, inv__xi=2145386497, inv__xi_u={5:0}, inv__xsi=2145386497, main____CPAchecker_TMP_0=1, main__a=2145386501, main__r=2145386497] [L83] COND FALSE !(main__r >= 0) VAL [__return_104=2145386497, __return_main=0, __tmp_1=2145386501, inv____CPAchecker_TMP_0=0, inv__A=2145386501, inv__A_u={4:0}, inv__cond=0, inv__exp=-1023, inv__xi=2145386497, inv__xi_u={5:0}, inv__xsi=2145386497, main____CPAchecker_TMP_0=1, main__a=2145386501, main__r=2145386497] [L108] main____CPAchecker_TMP_1 = 0 VAL [__return_104=2145386497, __return_main=0, __tmp_1=2145386501, inv____CPAchecker_TMP_0=0, inv__A=2145386501, inv__A_u={4:0}, inv__cond=0, inv__exp=-1023, inv__xi=2145386497, inv__xi_u={5:0}, inv__xsi=2145386497, main____CPAchecker_TMP_0=1, main____CPAchecker_TMP_1=0, main__a=2145386501, main__r=2145386497] [L90] int __tmp_2; [L91] __tmp_2 = main____CPAchecker_TMP_1 [L92] int __VERIFIER_assert__cond; [L93] __VERIFIER_assert__cond = __tmp_2 VAL [__return_104=2145386497, __return_main=0, __tmp_1=2145386501, __tmp_2=0, __VERIFIER_assert__cond=0, inv____CPAchecker_TMP_0=0, inv__A=2145386501, inv__A_u={4:0}, inv__cond=0, inv__exp=-1023, inv__xi=2145386497, inv__xi_u={5:0}, inv__xsi=2145386497, main____CPAchecker_TMP_0=1, main____CPAchecker_TMP_1=0, main__a=2145386501, main__r=2145386497] [L94] COND TRUE __VERIFIER_assert__cond == 0 VAL [__return_104=2145386497, __return_main=0, __tmp_1=2145386501, __tmp_2=0, __VERIFIER_assert__cond=0, inv____CPAchecker_TMP_0=0, inv__A=2145386501, inv__A_u={4:0}, inv__cond=0, inv__exp=-1023, inv__xi=2145386497, inv__xi_u={5:0}, inv__xsi=2145386497, main____CPAchecker_TMP_0=1, main____CPAchecker_TMP_1=0, main__a=2145386501, main__r=2145386497] [L96] reach_error() VAL [__return_104=2145386497, __return_main=0, __tmp_1=2145386501, __tmp_2=0, __VERIFIER_assert__cond=0, inv____CPAchecker_TMP_0=0, inv__A=2145386501, inv__A_u={4:0}, inv__cond=0, inv__exp=-1023, inv__xi=2145386497, inv__xi_u={5:0}, inv__xsi=2145386497, main____CPAchecker_TMP_0=1, main____CPAchecker_TMP_1=0, main__a=2145386501, main__r=2145386497] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 19 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.0s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 82 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 82 mSDsluCounter, 196 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 138 mSDsCounter, 11 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 52 IncrementalHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 11 mSolverCounterUnsat, 61 mSDtfsCounter, 52 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred in iteration=0, InterpolantAutomatonStates: 19, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 3 MinimizatonAttempts, 46 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 52 NumberOfCodeBlocks, 52 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 35 ConstructedInterpolants, 0 QuantifiedInterpolants, 56 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 2/2 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 [2021-11-25 18:11:32,597 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57435a9b-7c48-4c4d-9f96-7399b87f7cbb/bin/utaipan-eEHZpOm5b7/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_57435a9b-7c48-4c4d-9f96-7399b87f7cbb/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57435a9b-7c48-4c4d-9f96-7399b87f7cbb/bin/utaipan-eEHZpOm5b7/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57435a9b-7c48-4c4d-9f96-7399b87f7cbb/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57435a9b-7c48-4c4d-9f96-7399b87f7cbb/bin/utaipan-eEHZpOm5b7/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/inv_Newton.c.p+cfa-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57435a9b-7c48-4c4d-9f96-7399b87f7cbb/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57435a9b-7c48-4c4d-9f96-7399b87f7cbb/bin/utaipan-eEHZpOm5b7 --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 f807884dfe796c964ede5317ceef5bdc8dc93cb7b5e0611cc0dc63f2d13b17a0 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 18:11:35,004 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 18:11:35,007 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 18:11:35,057 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 18:11:35,058 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 18:11:35,062 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 18:11:35,064 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 18:11:35,068 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 18:11:35,071 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 18:11:35,079 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 18:11:35,080 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 18:11:35,082 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 18:11:35,082 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 18:11:35,085 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 18:11:35,087 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 18:11:35,091 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 18:11:35,092 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 18:11:35,094 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 18:11:35,095 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 18:11:35,103 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 18:11:35,105 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 18:11:35,106 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 18:11:35,108 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 18:11:35,111 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 18:11:35,119 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 18:11:35,119 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 18:11:35,120 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 18:11:35,122 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 18:11:35,122 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 18:11:35,123 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 18:11:35,124 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 18:11:35,124 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 18:11:35,126 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 18:11:35,127 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 18:11:35,135 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 18:11:35,135 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 18:11:35,136 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 18:11:35,136 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 18:11:35,136 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 18:11:35,137 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 18:11:35,138 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 18:11:35,142 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57435a9b-7c48-4c4d-9f96-7399b87f7cbb/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-25 18:11:35,184 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 18:11:35,184 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 18:11:35,185 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 18:11:35,185 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 18:11:35,186 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 18:11:35,186 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 18:11:35,187 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 18:11:35,187 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 18:11:35,188 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 18:11:35,188 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 18:11:35,189 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 18:11:35,189 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 18:11:35,190 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 18:11:35,191 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-25 18:11:35,191 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-25 18:11:35,191 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 18:11:35,191 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 18:11:35,192 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 18:11:35,192 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 18:11:35,192 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-25 18:11:35,192 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-25 18:11:35,192 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-25 18:11:35,193 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-25 18:11:35,193 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 18:11:35,193 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 18:11:35,193 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 18:11:35,194 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 18:11:35,194 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-25 18:11:35,194 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 18:11:35,194 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 18:11:35,194 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 18:11:35,195 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 18:11:35,195 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 18:11:35,196 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-25 18:11:35,196 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-25 18:11:35,196 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 18:11:35,196 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 18:11:35,197 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 18:11:35,197 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_57435a9b-7c48-4c4d-9f96-7399b87f7cbb/bin/utaipan-eEHZpOm5b7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57435a9b-7c48-4c4d-9f96-7399b87f7cbb/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f807884dfe796c964ede5317ceef5bdc8dc93cb7b5e0611cc0dc63f2d13b17a0 [2021-11-25 18:11:35,583 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 18:11:35,603 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 18:11:35,606 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 18:11:35,607 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 18:11:35,608 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 18:11:35,609 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57435a9b-7c48-4c4d-9f96-7399b87f7cbb/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/float-benchs/inv_Newton.c.p+cfa-reducer.c [2021-11-25 18:11:35,678 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57435a9b-7c48-4c4d-9f96-7399b87f7cbb/bin/utaipan-eEHZpOm5b7/data/1e8507a64/e3eff451a050498cac443cd6379a0ce4/FLAGd28a9aac1 [2021-11-25 18:11:36,262 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 18:11:36,265 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57435a9b-7c48-4c4d-9f96-7399b87f7cbb/sv-benchmarks/c/float-benchs/inv_Newton.c.p+cfa-reducer.c [2021-11-25 18:11:36,272 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57435a9b-7c48-4c4d-9f96-7399b87f7cbb/bin/utaipan-eEHZpOm5b7/data/1e8507a64/e3eff451a050498cac443cd6379a0ce4/FLAGd28a9aac1 [2021-11-25 18:11:36,650 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57435a9b-7c48-4c4d-9f96-7399b87f7cbb/bin/utaipan-eEHZpOm5b7/data/1e8507a64/e3eff451a050498cac443cd6379a0ce4 [2021-11-25 18:11:36,653 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 18:11:36,654 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 18:11:36,657 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 18:11:36,658 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 18:11:36,661 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 18:11:36,663 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:11:36" (1/1) ... [2021-11-25 18:11:36,664 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54a501d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:11:36, skipping insertion in model container [2021-11-25 18:11:36,664 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:11:36" (1/1) ... [2021-11-25 18:11:36,671 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 18:11:36,696 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 18:11:36,842 WARN L230 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_57435a9b-7c48-4c4d-9f96-7399b87f7cbb/sv-benchmarks/c/float-benchs/inv_Newton.c.p+cfa-reducer.c[2006,2019] [2021-11-25 18:11:36,847 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 18:11:36,886 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 18:11:36,927 WARN L230 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_57435a9b-7c48-4c4d-9f96-7399b87f7cbb/sv-benchmarks/c/float-benchs/inv_Newton.c.p+cfa-reducer.c[2006,2019] [2021-11-25 18:11:36,929 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 18:11:36,960 INFO L208 MainTranslator]: Completed translation [2021-11-25 18:11:36,960 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:11:36 WrapperNode [2021-11-25 18:11:36,960 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 18:11:36,961 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 18:11:36,961 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 18:11:36,961 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 18:11:36,968 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:11:36" (1/1) ... [2021-11-25 18:11:36,977 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:11:36" (1/1) ... [2021-11-25 18:11:37,003 INFO L137 Inliner]: procedures = 21, calls = 20, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 99 [2021-11-25 18:11:37,006 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 18:11:37,006 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 18:11:37,007 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 18:11:37,007 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 18:11:37,015 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:11:36" (1/1) ... [2021-11-25 18:11:37,016 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:11:36" (1/1) ... [2021-11-25 18:11:37,031 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:11:36" (1/1) ... [2021-11-25 18:11:37,031 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:11:36" (1/1) ... [2021-11-25 18:11:37,053 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:11:36" (1/1) ... [2021-11-25 18:11:37,055 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:11:36" (1/1) ... [2021-11-25 18:11:37,058 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:11:36" (1/1) ... [2021-11-25 18:11:37,061 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 18:11:37,062 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 18:11:37,062 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 18:11:37,062 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 18:11:37,063 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:11:36" (1/1) ... [2021-11-25 18:11:37,070 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 18:11:37,082 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57435a9b-7c48-4c4d-9f96-7399b87f7cbb/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:11:37,092 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57435a9b-7c48-4c4d-9f96-7399b87f7cbb/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 18:11:37,118 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57435a9b-7c48-4c4d-9f96-7399b87f7cbb/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 18:11:37,137 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 18:11:37,141 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2021-11-25 18:11:37,141 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2021-11-25 18:11:37,141 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-25 18:11:37,142 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-25 18:11:37,142 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-25 18:11:37,142 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 18:11:37,142 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 18:11:37,142 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-25 18:11:37,143 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-25 18:11:37,219 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 18:11:37,221 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 18:11:39,666 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 18:11:39,672 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 18:11:39,673 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-25 18:11:39,674 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:11:39 BoogieIcfgContainer [2021-11-25 18:11:39,675 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 18:11:39,676 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 18:11:39,677 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 18:11:39,679 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 18:11:39,679 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 06:11:36" (1/3) ... [2021-11-25 18:11:39,680 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65dfd6e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:11:39, skipping insertion in model container [2021-11-25 18:11:39,680 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:11:36" (2/3) ... [2021-11-25 18:11:39,681 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65dfd6e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:11:39, skipping insertion in model container [2021-11-25 18:11:39,681 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:11:39" (3/3) ... [2021-11-25 18:11:39,682 INFO L111 eAbstractionObserver]: Analyzing ICFG inv_Newton.c.p+cfa-reducer.c [2021-11-25 18:11:39,687 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 18:11:39,687 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-25 18:11:39,732 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 18:11:39,739 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 [2021-11-25 18:11:39,739 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-25 18:11:39,752 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 20 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:11:39,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-25 18:11:39,758 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:11:39,758 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:11:39,759 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:11:39,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:11:39,764 INFO L85 PathProgramCache]: Analyzing trace with hash -938930996, now seen corresponding path program 1 times [2021-11-25 18:11:39,776 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 18:11:39,777 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1552212946] [2021-11-25 18:11:39,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:11:39,778 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 18:11:39,778 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57435a9b-7c48-4c4d-9f96-7399b87f7cbb/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 18:11:39,786 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57435a9b-7c48-4c4d-9f96-7399b87f7cbb/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 18:11:39,788 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57435a9b-7c48-4c4d-9f96-7399b87f7cbb/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-25 18:11:39,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:11:39,910 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-25 18:11:39,914 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:11:40,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:11:40,020 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 18:11:40,021 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 18:11:40,021 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1552212946] [2021-11-25 18:11:40,022 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1552212946] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:11:40,022 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:11:40,023 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:11:40,024 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919283492] [2021-11-25 18:11:40,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:11:40,028 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:11:40,029 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 18:11:40,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:11:40,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:11:40,065 INFO L87 Difference]: Start difference. First operand has 21 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 20 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:11:42,298 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.22s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-25 18:11:42,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:11:42,393 INFO L93 Difference]: Finished difference Result 32 states and 43 transitions. [2021-11-25 18:11:42,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:11:42,396 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-11-25 18:11:42,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:11:42,405 INFO L225 Difference]: With dead ends: 32 [2021-11-25 18:11:42,405 INFO L226 Difference]: Without dead ends: 19 [2021-11-25 18:11:42,408 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:11:42,411 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 0 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-11-25 18:11:42,413 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 50 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 1 Unknown, 0 Unchecked, 2.3s Time] [2021-11-25 18:11:42,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-11-25 18:11:42,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2021-11-25 18:11:42,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 18 states have internal predecessors, (25), 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) [2021-11-25 18:11:42,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 25 transitions. [2021-11-25 18:11:42,442 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 25 transitions. Word has length 11 [2021-11-25 18:11:42,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:11:42,442 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 25 transitions. [2021-11-25 18:11:42,442 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:11:42,442 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 25 transitions. [2021-11-25 18:11:42,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-25 18:11:42,456 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:11:42,456 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:11:42,468 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57435a9b-7c48-4c4d-9f96-7399b87f7cbb/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-11-25 18:11:42,657 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57435a9b-7c48-4c4d-9f96-7399b87f7cbb/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 18:11:42,657 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:11:42,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:11:42,658 INFO L85 PathProgramCache]: Analyzing trace with hash 1250925041, now seen corresponding path program 1 times [2021-11-25 18:11:42,659 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 18:11:42,660 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2084549031] [2021-11-25 18:11:42,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:11:42,660 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 18:11:42,660 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57435a9b-7c48-4c4d-9f96-7399b87f7cbb/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 18:11:42,664 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57435a9b-7c48-4c4d-9f96-7399b87f7cbb/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 18:11:42,665 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57435a9b-7c48-4c4d-9f96-7399b87f7cbb/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-25 18:11:43,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:11:43,386 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-25 18:11:43,387 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:11:43,521 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:11:43,521 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 18:11:43,521 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 18:11:43,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2084549031] [2021-11-25 18:11:43,522 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2084549031] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:11:43,522 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:11:43,522 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 18:11:43,523 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554821357] [2021-11-25 18:11:43,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:11:43,524 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 18:11:43,524 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 18:11:43,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 18:11:43,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 18:11:43,525 INFO L87 Difference]: Start difference. First operand 19 states and 25 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 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) [2021-11-25 18:11:45,755 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.21s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-25 18:11:45,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:11:45,924 INFO L93 Difference]: Finished difference Result 28 states and 36 transitions. [2021-11-25 18:11:45,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 18:11:45,925 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 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) Word has length 15 [2021-11-25 18:11:45,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:11:45,926 INFO L225 Difference]: With dead ends: 28 [2021-11-25 18:11:45,926 INFO L226 Difference]: Without dead ends: 21 [2021-11-25 18:11:45,927 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-25 18:11:45,929 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 1 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-11-25 18:11:45,930 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 60 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 1 Unknown, 0 Unchecked, 2.4s Time] [2021-11-25 18:11:45,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2021-11-25 18:11:45,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 20. [2021-11-25 18:11:45,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.368421052631579) internal successors, (26), 19 states have internal predecessors, (26), 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) [2021-11-25 18:11:45,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 26 transitions. [2021-11-25 18:11:45,936 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 26 transitions. Word has length 15 [2021-11-25 18:11:45,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:11:45,937 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 26 transitions. [2021-11-25 18:11:45,937 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 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) [2021-11-25 18:11:45,937 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 26 transitions. [2021-11-25 18:11:45,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-25 18:11:45,938 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:11:45,938 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:11:45,960 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57435a9b-7c48-4c4d-9f96-7399b87f7cbb/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-25 18:11:46,146 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57435a9b-7c48-4c4d-9f96-7399b87f7cbb/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 18:11:46,146 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:11:46,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:11:46,147 INFO L85 PathProgramCache]: Analyzing trace with hash 1796523982, now seen corresponding path program 1 times [2021-11-25 18:11:46,148 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 18:11:46,148 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2085565898] [2021-11-25 18:11:46,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:11:46,148 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 18:11:46,148 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57435a9b-7c48-4c4d-9f96-7399b87f7cbb/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 18:11:46,151 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57435a9b-7c48-4c4d-9f96-7399b87f7cbb/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 18:11:46,168 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57435a9b-7c48-4c4d-9f96-7399b87f7cbb/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-25 18:11:46,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:11:46,844 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-25 18:11:46,846 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:11:46,958 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-25 18:11:46,958 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 18:11:46,958 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 18:11:46,959 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2085565898] [2021-11-25 18:11:46,959 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2085565898] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:11:46,959 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:11:46,959 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 18:11:46,959 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646483573] [2021-11-25 18:11:46,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:11:46,960 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 18:11:46,960 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 18:11:46,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 18:11:46,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 18:11:46,961 INFO L87 Difference]: Start difference. First operand 20 states and 26 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 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) [2021-11-25 18:11:47,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:11:47,065 INFO L93 Difference]: Finished difference Result 24 states and 29 transitions. [2021-11-25 18:11:47,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 18:11:47,065 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 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) Word has length 15 [2021-11-25 18:11:47,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:11:47,067 INFO L225 Difference]: With dead ends: 24 [2021-11-25 18:11:47,067 INFO L226 Difference]: Without dead ends: 20 [2021-11-25 18:11:47,067 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-25 18:11:47,069 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 1 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 18:11:47,070 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 63 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 18:11:47,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2021-11-25 18:11:47,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2021-11-25 18:11:47,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.3157894736842106) internal successors, (25), 19 states have internal predecessors, (25), 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) [2021-11-25 18:11:47,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 25 transitions. [2021-11-25 18:11:47,076 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 25 transitions. Word has length 15 [2021-11-25 18:11:47,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:11:47,077 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 25 transitions. [2021-11-25 18:11:47,077 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 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) [2021-11-25 18:11:47,077 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 25 transitions. [2021-11-25 18:11:47,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-25 18:11:47,078 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:11:47,078 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:11:47,103 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57435a9b-7c48-4c4d-9f96-7399b87f7cbb/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-25 18:11:47,302 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57435a9b-7c48-4c4d-9f96-7399b87f7cbb/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 18:11:47,303 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:11:47,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:11:47,303 INFO L85 PathProgramCache]: Analyzing trace with hash 1813534643, now seen corresponding path program 1 times [2021-11-25 18:11:47,304 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 18:11:47,304 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [856729897] [2021-11-25 18:11:47,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:11:47,304 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 18:11:47,304 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57435a9b-7c48-4c4d-9f96-7399b87f7cbb/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 18:11:47,306 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57435a9b-7c48-4c4d-9f96-7399b87f7cbb/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 18:11:47,313 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57435a9b-7c48-4c4d-9f96-7399b87f7cbb/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-25 18:11:48,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:11:48,353 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 20 conjunts are in the unsatisfiable core [2021-11-25 18:11:48,355 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:11:48,632 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 99 treesize of output 93 [2021-11-25 18:12:54,501 WARN L838 $PredicateComparison]: unable to prove that (and (exists ((|ULTIMATE.start_main_~inv__exp~0#1| (_ BitVec 32)) (|v_skolemized_q#valueAsBitvector_7| (_ BitVec 64)) (|ULTIMATE.start_main_~inv__A~0#1| (_ FloatingPoint 11 53))) (let ((.cse0 (let ((.cse1 (concat ((_ extract 63 32) |v_skolemized_q#valueAsBitvector_7|) (bvshl (bvadd (_ bv1023 32) (bvneg |ULTIMATE.start_main_~inv__exp~0#1|)) (_ bv20 32))))) (fp ((_ extract 63 63) .cse1) ((_ extract 62 52) .cse1) ((_ extract 51 0) .cse1))))) (and (= |c_ULTIMATE.start_main_~inv__temp~0#1| (fp.sub c_currentRoundingMode |c_ULTIMATE.start_main_~inv__xsi~0#1| .cse0)) (= (fp ((_ extract 63 63) |v_skolemized_q#valueAsBitvector_7|) ((_ extract 62 52) |v_skolemized_q#valueAsBitvector_7|) ((_ extract 51 0) |v_skolemized_q#valueAsBitvector_7|)) ((_ to_fp 11 53) c_currentRoundingMode (_ bv1 32))) (fp.leq |ULTIMATE.start_main_~inv__A~0#1| ((_ to_fp 11 53) c_currentRoundingMode 30.0)) (fp.geq |ULTIMATE.start_main_~inv__A~0#1| ((_ to_fp 11 53) c_currentRoundingMode 20.0)) (= (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) .cse0) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode |ULTIMATE.start_main_~inv__A~0#1| .cse0) .cse0)) |c_ULTIMATE.start_main_~inv__xsi~0#1|)))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false [2021-11-25 18:15:05,130 WARN L838 $PredicateComparison]: unable to prove that (and (exists ((|ULTIMATE.start_main_~inv__exp~0#1| (_ BitVec 32)) (|v_skolemized_q#valueAsBitvector_7| (_ BitVec 64)) (|ULTIMATE.start_main_~inv__A~0#1| (_ FloatingPoint 11 53))) (let ((.cse0 (let ((.cse1 (concat ((_ extract 63 32) |v_skolemized_q#valueAsBitvector_7|) (bvshl (bvadd (_ bv1023 32) (bvneg |ULTIMATE.start_main_~inv__exp~0#1|)) (_ bv20 32))))) (fp ((_ extract 63 63) .cse1) ((_ extract 62 52) .cse1) ((_ extract 51 0) .cse1))))) (and (= (fp ((_ extract 63 63) |v_skolemized_q#valueAsBitvector_7|) ((_ extract 62 52) |v_skolemized_q#valueAsBitvector_7|) ((_ extract 51 0) |v_skolemized_q#valueAsBitvector_7|)) ((_ to_fp 11 53) c_currentRoundingMode (_ bv1 32))) (not (fp.lt (fp.sub c_currentRoundingMode |c_ULTIMATE.start_main_~inv__xsi~0#1| .cse0) (fp.neg ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 10000000000.0))))) (fp.leq |ULTIMATE.start_main_~inv__A~0#1| ((_ to_fp 11 53) c_currentRoundingMode 30.0)) (fp.geq |ULTIMATE.start_main_~inv__A~0#1| ((_ to_fp 11 53) c_currentRoundingMode 20.0)) (= (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) .cse0) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode |ULTIMATE.start_main_~inv__A~0#1| .cse0) .cse0)) |c_ULTIMATE.start_main_~inv__xsi~0#1|)))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false [2021-11-25 18:16:25,476 WARN L838 $PredicateComparison]: unable to prove that (and (exists ((|ULTIMATE.start_main_~inv__exp~0#1| (_ BitVec 32)) (|v_skolemized_q#valueAsBitvector_7| (_ BitVec 64)) (|ULTIMATE.start_main_~inv__A~0#1| (_ FloatingPoint 11 53))) (let ((.cse1 (let ((.cse2 (concat ((_ extract 63 32) |v_skolemized_q#valueAsBitvector_7|) (bvshl (bvadd (_ bv1023 32) (bvneg |ULTIMATE.start_main_~inv__exp~0#1|)) (_ bv20 32))))) (fp ((_ extract 63 63) .cse2) ((_ extract 62 52) .cse2) ((_ extract 51 0) .cse2))))) (let ((.cse0 (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) .cse1) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode |ULTIMATE.start_main_~inv__A~0#1| .cse1) .cse1)))) (and (= (fp ((_ extract 63 63) |v_skolemized_q#valueAsBitvector_7|) ((_ extract 62 52) |v_skolemized_q#valueAsBitvector_7|) ((_ extract 51 0) |v_skolemized_q#valueAsBitvector_7|)) ((_ to_fp 11 53) c_currentRoundingMode (_ bv1 32))) (fp.leq |ULTIMATE.start_main_~inv__A~0#1| ((_ to_fp 11 53) c_currentRoundingMode 30.0)) (fp.geq |ULTIMATE.start_main_~inv__A~0#1| ((_ to_fp 11 53) c_currentRoundingMode 20.0)) (not (fp.lt (fp.sub c_currentRoundingMode .cse0 .cse1) (fp.neg ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 10000000000.0))))) (= .cse0 |c_ULTIMATE.start_main_~inv__xi~0#1|))))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false [2021-11-25 18:17:45,929 WARN L838 $PredicateComparison]: unable to prove that (and (exists ((|ULTIMATE.start_main_~inv__exp~0#1| (_ BitVec 32)) (|v_skolemized_q#valueAsBitvector_7| (_ BitVec 64)) (|ULTIMATE.start_main_~inv__A~0#1| (_ FloatingPoint 11 53))) (let ((.cse1 (let ((.cse2 (concat ((_ extract 63 32) |v_skolemized_q#valueAsBitvector_7|) (bvshl (bvadd (_ bv1023 32) (bvneg |ULTIMATE.start_main_~inv__exp~0#1|)) (_ bv20 32))))) (fp ((_ extract 63 63) .cse2) ((_ extract 62 52) .cse2) ((_ extract 51 0) .cse2))))) (let ((.cse0 (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) .cse1) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode |ULTIMATE.start_main_~inv__A~0#1| .cse1) .cse1)))) (and (= (fp ((_ extract 63 63) |v_skolemized_q#valueAsBitvector_7|) ((_ extract 62 52) |v_skolemized_q#valueAsBitvector_7|) ((_ extract 51 0) |v_skolemized_q#valueAsBitvector_7|)) ((_ to_fp 11 53) c_currentRoundingMode (_ bv1 32))) (fp.leq |ULTIMATE.start_main_~inv__A~0#1| ((_ to_fp 11 53) c_currentRoundingMode 30.0)) (fp.geq |ULTIMATE.start_main_~inv__A~0#1| ((_ to_fp 11 53) c_currentRoundingMode 20.0)) (not (fp.lt (fp.sub c_currentRoundingMode .cse0 .cse1) (fp.neg ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 10000000000.0))))) (= |c_ULTIMATE.start_main_~main__r~0#1| .cse0))))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false [2021-11-25 18:19:08,679 WARN L838 $PredicateComparison]: unable to prove that (exists ((|ULTIMATE.start_main_~inv__exp~0#1| (_ BitVec 32)) (|v_skolemized_q#valueAsBitvector_7| (_ BitVec 64)) (|ULTIMATE.start_main_~inv__A~0#1| (_ FloatingPoint 11 53))) (let ((.cse1 (let ((.cse2 (concat ((_ extract 63 32) |v_skolemized_q#valueAsBitvector_7|) (bvshl (bvadd (_ bv1023 32) (bvneg |ULTIMATE.start_main_~inv__exp~0#1|)) (_ bv20 32))))) (fp ((_ extract 63 63) .cse2) ((_ extract 62 52) .cse2) ((_ extract 51 0) .cse2))))) (let ((.cse0 (fp.sub roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (_ bv2 32)) .cse1) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven |ULTIMATE.start_main_~inv__A~0#1| .cse1) .cse1)))) (and (fp.leq |ULTIMATE.start_main_~inv__A~0#1| ((_ to_fp 11 53) roundNearestTiesToEven 30.0)) (= (fp ((_ extract 63 63) |v_skolemized_q#valueAsBitvector_7|) ((_ extract 62 52) |v_skolemized_q#valueAsBitvector_7|) ((_ extract 51 0) |v_skolemized_q#valueAsBitvector_7|)) ((_ to_fp 11 53) roundNearestTiesToEven (_ bv1 32))) (not (fp.lt (fp.sub roundNearestTiesToEven .cse0 .cse1) (fp.neg ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 10000000000.0))))) (not (fp.geq .cse0 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))) (fp.geq |ULTIMATE.start_main_~inv__A~0#1| ((_ to_fp 11 53) roundNearestTiesToEven 20.0)))))) is different from false [2021-11-25 18:19:10,771 WARN L860 $PredicateComparison]: unable to prove that (exists ((|ULTIMATE.start_main_~inv__exp~0#1| (_ BitVec 32)) (|v_skolemized_q#valueAsBitvector_7| (_ BitVec 64)) (|ULTIMATE.start_main_~inv__A~0#1| (_ FloatingPoint 11 53))) (let ((.cse1 (let ((.cse2 (concat ((_ extract 63 32) |v_skolemized_q#valueAsBitvector_7|) (bvshl (bvadd (_ bv1023 32) (bvneg |ULTIMATE.start_main_~inv__exp~0#1|)) (_ bv20 32))))) (fp ((_ extract 63 63) .cse2) ((_ extract 62 52) .cse2) ((_ extract 51 0) .cse2))))) (let ((.cse0 (fp.sub roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (_ bv2 32)) .cse1) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven |ULTIMATE.start_main_~inv__A~0#1| .cse1) .cse1)))) (and (fp.leq |ULTIMATE.start_main_~inv__A~0#1| ((_ to_fp 11 53) roundNearestTiesToEven 30.0)) (= (fp ((_ extract 63 63) |v_skolemized_q#valueAsBitvector_7|) ((_ extract 62 52) |v_skolemized_q#valueAsBitvector_7|) ((_ extract 51 0) |v_skolemized_q#valueAsBitvector_7|)) ((_ to_fp 11 53) roundNearestTiesToEven (_ bv1 32))) (not (fp.lt (fp.sub roundNearestTiesToEven .cse0 .cse1) (fp.neg ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 10000000000.0))))) (not (fp.geq .cse0 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))) (fp.geq |ULTIMATE.start_main_~inv__A~0#1| ((_ to_fp 11 53) roundNearestTiesToEven 20.0)))))) is different from true [2021-11-25 18:23:13,886 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2021-11-25 18:23:13,886 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 18:23:25,404 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) |c_ULTIMATE.start_main_~inv__xi~0#1|) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode |c_ULTIMATE.start_main_~inv__A~0#1| |c_ULTIMATE.start_main_~inv__xi~0#1|) |c_ULTIMATE.start_main_~inv__xi~0#1|)))) (or (fp.lt (fp.sub c_currentRoundingMode .cse0 |c_ULTIMATE.start_main_~inv__xi~0#1|) (fp.neg ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 10000000000.0)))) (fp.geq .cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))))) is different from false [2021-11-25 18:23:27,555 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) |c_ULTIMATE.start_main_~inv__xi~0#1|) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode |c_ULTIMATE.start_main_~inv__A~0#1| |c_ULTIMATE.start_main_~inv__xi~0#1|) |c_ULTIMATE.start_main_~inv__xi~0#1|)))) (or (fp.lt (fp.sub c_currentRoundingMode .cse0 |c_ULTIMATE.start_main_~inv__xi~0#1|) (fp.neg ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 10000000000.0)))) (fp.geq .cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))))) is different from true [2021-11-25 18:23:27,600 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 715 treesize of output 673 [2021-11-25 18:24:09,922 WARN L860 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~inv__exp~0#1_4| (_ BitVec 32)) (|v_skolemized_q#valueAsBitvector_7| (_ BitVec 64))) (let ((.cse1 (let ((.cse2 (concat ((_ extract 63 32) |v_skolemized_q#valueAsBitvector_7|) (bvshl (bvadd (bvneg |v_ULTIMATE.start_main_~inv__exp~0#1_4|) (_ bv1023 32)) (_ bv20 32))))) (fp ((_ extract 63 63) .cse2) ((_ extract 62 52) .cse2) ((_ extract 51 0) .cse2))))) (let ((.cse0 (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) .cse1) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode |c_ULTIMATE.start_main_~main__a~0#1| .cse1) .cse1)))) (or (fp.lt (fp.sub c_currentRoundingMode .cse0 .cse1) (fp.neg ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 10000000000.0)))) (fp.geq .cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))) (not (= (fp ((_ extract 63 63) |v_skolemized_q#valueAsBitvector_7|) ((_ extract 62 52) |v_skolemized_q#valueAsBitvector_7|) ((_ extract 51 0) |v_skolemized_q#valueAsBitvector_7|)) ((_ to_fp 11 53) c_currentRoundingMode (_ bv1 32)))))))) is different from true [2021-11-25 18:24:34,193 WARN L860 $PredicateComparison]: unable to prove that (or (forall ((|v_ULTIMATE.start_main_~inv__exp~0#1_4| (_ BitVec 32)) (|v_skolemized_q#valueAsBitvector_7| (_ BitVec 64))) (let ((.cse1 (let ((.cse2 (concat ((_ extract 63 32) |v_skolemized_q#valueAsBitvector_7|) (bvshl (bvadd (bvneg |v_ULTIMATE.start_main_~inv__exp~0#1_4|) (_ bv1023 32)) (_ bv20 32))))) (fp ((_ extract 63 63) .cse2) ((_ extract 62 52) .cse2) ((_ extract 51 0) .cse2))))) (let ((.cse0 (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) .cse1) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode |c_ULTIMATE.start_main_~main__a~0#1| .cse1) .cse1)))) (or (fp.lt (fp.sub c_currentRoundingMode .cse0 .cse1) (fp.neg ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 10000000000.0)))) (fp.geq .cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))) (not (= (fp ((_ extract 63 63) |v_skolemized_q#valueAsBitvector_7|) ((_ extract 62 52) |v_skolemized_q#valueAsBitvector_7|) ((_ extract 51 0) |v_skolemized_q#valueAsBitvector_7|)) ((_ to_fp 11 53) c_currentRoundingMode (_ bv1 32)))))))) (not (fp.leq |c_ULTIMATE.start_main_~main__a~0#1| ((_ to_fp 11 53) c_currentRoundingMode 30.0)))) is different from true [2021-11-25 18:25:56,024 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~main__a~0#1| (_ FloatingPoint 11 53))) (or (not (fp.geq |ULTIMATE.start_main_~main__a~0#1| ((_ to_fp 11 53) c_currentRoundingMode 20.0))) (forall ((|v_ULTIMATE.start_main_~inv__exp~0#1_4| (_ BitVec 32)) (|v_skolemized_q#valueAsBitvector_7| (_ BitVec 64))) (let ((.cse1 (let ((.cse2 (concat ((_ extract 63 32) |v_skolemized_q#valueAsBitvector_7|) (bvshl (bvadd (bvneg |v_ULTIMATE.start_main_~inv__exp~0#1_4|) (_ bv1023 32)) (_ bv20 32))))) (fp ((_ extract 63 63) .cse2) ((_ extract 62 52) .cse2) ((_ extract 51 0) .cse2))))) (let ((.cse0 (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) .cse1) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode |ULTIMATE.start_main_~main__a~0#1| .cse1) .cse1)))) (or (fp.lt (fp.sub c_currentRoundingMode .cse0 .cse1) (fp.neg ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 10000000000.0)))) (fp.geq .cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))) (not (= (fp ((_ extract 63 63) |v_skolemized_q#valueAsBitvector_7|) ((_ extract 62 52) |v_skolemized_q#valueAsBitvector_7|) ((_ extract 51 0) |v_skolemized_q#valueAsBitvector_7|)) ((_ to_fp 11 53) c_currentRoundingMode (_ bv1 32)))))))) (not (fp.leq |ULTIMATE.start_main_~main__a~0#1| ((_ to_fp 11 53) c_currentRoundingMode 30.0))))) is different from false [2021-11-25 18:25:58,155 WARN L860 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~main__a~0#1| (_ FloatingPoint 11 53))) (or (not (fp.geq |ULTIMATE.start_main_~main__a~0#1| ((_ to_fp 11 53) c_currentRoundingMode 20.0))) (forall ((|v_ULTIMATE.start_main_~inv__exp~0#1_4| (_ BitVec 32)) (|v_skolemized_q#valueAsBitvector_7| (_ BitVec 64))) (let ((.cse1 (let ((.cse2 (concat ((_ extract 63 32) |v_skolemized_q#valueAsBitvector_7|) (bvshl (bvadd (bvneg |v_ULTIMATE.start_main_~inv__exp~0#1_4|) (_ bv1023 32)) (_ bv20 32))))) (fp ((_ extract 63 63) .cse2) ((_ extract 62 52) .cse2) ((_ extract 51 0) .cse2))))) (let ((.cse0 (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) .cse1) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode |ULTIMATE.start_main_~main__a~0#1| .cse1) .cse1)))) (or (fp.lt (fp.sub c_currentRoundingMode .cse0 .cse1) (fp.neg ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 10000000000.0)))) (fp.geq .cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))) (not (= (fp ((_ extract 63 63) |v_skolemized_q#valueAsBitvector_7|) ((_ extract 62 52) |v_skolemized_q#valueAsBitvector_7|) ((_ extract 51 0) |v_skolemized_q#valueAsBitvector_7|)) ((_ to_fp 11 53) c_currentRoundingMode (_ bv1 32)))))))) (not (fp.leq |ULTIMATE.start_main_~main__a~0#1| ((_ to_fp 11 53) c_currentRoundingMode 30.0))))) is different from true