./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/double_req_bl_1121a.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e60c4cab-e7f0-42cf-bb09-f5b2932c5c5c/bin/utaipan-SDwSMHVbGG/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e60c4cab-e7f0-42cf-bb09-f5b2932c5c5c/bin/utaipan-SDwSMHVbGG/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e60c4cab-e7f0-42cf-bb09-f5b2932c5c5c/bin/utaipan-SDwSMHVbGG/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e60c4cab-e7f0-42cf-bb09-f5b2932c5c5c/bin/utaipan-SDwSMHVbGG/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1121a.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e60c4cab-e7f0-42cf-bb09-f5b2932c5c5c/bin/utaipan-SDwSMHVbGG/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e60c4cab-e7f0-42cf-bb09-f5b2932c5c5c/bin/utaipan-SDwSMHVbGG --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 e2915ae970b23f9234beaed5f436ef87de022b558ff8241f79bda095bd417e23 ............................................................................................................................................................................................................................................................................................................................ Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e60c4cab-e7f0-42cf-bb09-f5b2932c5c5c/bin/utaipan-SDwSMHVbGG/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e60c4cab-e7f0-42cf-bb09-f5b2932c5c5c/bin/utaipan-SDwSMHVbGG/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e60c4cab-e7f0-42cf-bb09-f5b2932c5c5c/bin/utaipan-SDwSMHVbGG/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e60c4cab-e7f0-42cf-bb09-f5b2932c5c5c/bin/utaipan-SDwSMHVbGG/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1121a.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e60c4cab-e7f0-42cf-bb09-f5b2932c5c5c/bin/utaipan-SDwSMHVbGG/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e60c4cab-e7f0-42cf-bb09-f5b2932c5c5c/bin/utaipan-SDwSMHVbGG --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 e2915ae970b23f9234beaed5f436ef87de022b558ff8241f79bda095bd417e23 ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-29 05:55:53,750 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-29 05:55:53,752 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-29 05:55:53,805 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-29 05:55:53,806 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-29 05:55:53,810 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-29 05:55:53,813 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-29 05:55:53,817 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-29 05:55:53,820 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-29 05:55:53,825 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-29 05:55:53,826 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-29 05:55:53,828 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-29 05:55:53,828 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-29 05:55:53,831 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-29 05:55:53,833 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-29 05:55:53,839 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-29 05:55:53,840 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-29 05:55:53,841 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-29 05:55:53,847 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-29 05:55:53,856 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-29 05:55:53,857 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-29 05:55:53,859 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-29 05:55:53,862 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-29 05:55:53,863 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-29 05:55:53,866 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-29 05:55:53,867 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-29 05:55:53,867 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-29 05:55:53,869 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-29 05:55:53,870 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-29 05:55:53,871 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-29 05:55:53,872 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-29 05:55:53,873 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-29 05:55:53,874 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-29 05:55:53,875 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-29 05:55:53,877 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-29 05:55:53,877 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-29 05:55:53,878 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-29 05:55:53,878 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-29 05:55:53,878 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-29 05:55:53,879 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-29 05:55:53,880 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-29 05:55:53,880 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e60c4cab-e7f0-42cf-bb09-f5b2932c5c5c/bin/utaipan-SDwSMHVbGG/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-29 05:55:53,928 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-29 05:55:53,928 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-29 05:55:53,930 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-29 05:55:53,930 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-29 05:55:53,931 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-29 05:55:53,931 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-29 05:55:53,931 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-29 05:55:53,931 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-29 05:55:53,931 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-29 05:55:53,932 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-29 05:55:53,938 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-29 05:55:53,939 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-29 05:55:53,939 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-29 05:55:53,939 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-29 05:55:53,939 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-29 05:55:53,940 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-29 05:55:53,940 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-29 05:55:53,940 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-29 05:55:53,941 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-29 05:55:53,941 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-29 05:55:53,941 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-29 05:55:53,941 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-29 05:55:53,941 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-29 05:55:53,942 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-29 05:55:53,942 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-29 05:55:53,942 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-29 05:55:53,942 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-29 05:55:53,942 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-29 05:55:53,943 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-29 05:55:53,945 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-29 05:55:53,945 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 05:55:53,945 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-29 05:55:53,945 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-29 05:55:53,946 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-29 05:55:53,946 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-29 05:55:53,946 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-29 05:55:53,946 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-29 05:55:53,946 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-29 05:55:53,947 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-29 05:55:53,947 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_e60c4cab-e7f0-42cf-bb09-f5b2932c5c5c/bin/utaipan-SDwSMHVbGG/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e60c4cab-e7f0-42cf-bb09-f5b2932c5c5c/bin/utaipan-SDwSMHVbGG Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e2915ae970b23f9234beaed5f436ef87de022b558ff8241f79bda095bd417e23 [2021-10-29 05:55:54,179 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-29 05:55:54,202 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-29 05:55:54,204 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-29 05:55:54,206 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-29 05:55:54,207 INFO L275 PluginConnector]: CDTParser initialized [2021-10-29 05:55:54,208 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e60c4cab-e7f0-42cf-bb09-f5b2932c5c5c/bin/utaipan-SDwSMHVbGG/../../sv-benchmarks/c/float-newlib/double_req_bl_1121a.c [2021-10-29 05:55:54,275 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e60c4cab-e7f0-42cf-bb09-f5b2932c5c5c/bin/utaipan-SDwSMHVbGG/data/ed7ba934e/3279e78042f349f4a37d8b583679edf6/FLAG7b970bcd6 [2021-10-29 05:55:54,752 INFO L306 CDTParser]: Found 1 translation units. [2021-10-29 05:55:54,753 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e60c4cab-e7f0-42cf-bb09-f5b2932c5c5c/sv-benchmarks/c/float-newlib/double_req_bl_1121a.c [2021-10-29 05:55:54,762 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e60c4cab-e7f0-42cf-bb09-f5b2932c5c5c/bin/utaipan-SDwSMHVbGG/data/ed7ba934e/3279e78042f349f4a37d8b583679edf6/FLAG7b970bcd6 [2021-10-29 05:55:55,136 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e60c4cab-e7f0-42cf-bb09-f5b2932c5c5c/bin/utaipan-SDwSMHVbGG/data/ed7ba934e/3279e78042f349f4a37d8b583679edf6 [2021-10-29 05:55:55,138 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-29 05:55:55,139 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-29 05:55:55,141 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-29 05:55:55,141 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-29 05:55:55,144 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-29 05:55:55,144 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:55:55" (1/1) ... [2021-10-29 05:55:55,145 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c432339 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:55:55, skipping insertion in model container [2021-10-29 05:55:55,146 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:55:55" (1/1) ... [2021-10-29 05:55:55,152 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-29 05:55:55,174 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-29 05:55:55,382 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e60c4cab-e7f0-42cf-bb09-f5b2932c5c5c/sv-benchmarks/c/float-newlib/double_req_bl_1121a.c[3883,3896] [2021-10-29 05:55:55,385 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 05:55:55,392 INFO L203 MainTranslator]: Completed pre-run [2021-10-29 05:55:55,451 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e60c4cab-e7f0-42cf-bb09-f5b2932c5c5c/sv-benchmarks/c/float-newlib/double_req_bl_1121a.c[3883,3896] [2021-10-29 05:55:55,452 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 05:55:55,466 INFO L208 MainTranslator]: Completed translation [2021-10-29 05:55:55,466 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:55:55 WrapperNode [2021-10-29 05:55:55,466 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-29 05:55:55,467 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-29 05:55:55,467 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-29 05:55:55,468 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-29 05:55:55,475 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:55:55" (1/1) ... [2021-10-29 05:55:55,485 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:55:55" (1/1) ... [2021-10-29 05:55:55,526 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-29 05:55:55,527 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-29 05:55:55,527 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-29 05:55:55,527 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-29 05:55:55,536 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:55:55" (1/1) ... [2021-10-29 05:55:55,536 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:55:55" (1/1) ... [2021-10-29 05:55:55,540 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:55:55" (1/1) ... [2021-10-29 05:55:55,540 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:55:55" (1/1) ... [2021-10-29 05:55:55,550 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:55:55" (1/1) ... [2021-10-29 05:55:55,559 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:55:55" (1/1) ... [2021-10-29 05:55:55,561 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:55:55" (1/1) ... [2021-10-29 05:55:55,570 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-29 05:55:55,580 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-29 05:55:55,580 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-29 05:55:55,580 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-29 05:55:55,582 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:55:55" (1/1) ... [2021-10-29 05:55:55,590 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 05:55:55,604 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e60c4cab-e7f0-42cf-bb09-f5b2932c5c5c/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 05:55:55,621 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e60c4cab-e7f0-42cf-bb09-f5b2932c5c5c/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-29 05:55:55,652 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e60c4cab-e7f0-42cf-bb09-f5b2932c5c5c/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-29 05:55:55,668 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-29 05:55:55,668 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-29 05:55:55,670 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-29 05:55:55,670 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-10-29 05:55:55,671 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-10-29 05:55:55,671 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-29 05:55:55,671 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-29 05:55:55,671 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-29 05:55:55,671 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2021-10-29 05:55:55,672 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-29 05:55:56,431 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-29 05:55:56,431 INFO L299 CfgBuilder]: Removed 22 assume(true) statements. [2021-10-29 05:55:56,434 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:55:56 BoogieIcfgContainer [2021-10-29 05:55:56,438 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-29 05:55:56,440 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-29 05:55:56,440 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-29 05:55:56,446 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-29 05:55:56,446 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 05:55:55" (1/3) ... [2021-10-29 05:55:56,447 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ed0b71b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:55:56, skipping insertion in model container [2021-10-29 05:55:56,447 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:55:55" (2/3) ... [2021-10-29 05:55:56,447 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ed0b71b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:55:56, skipping insertion in model container [2021-10-29 05:55:56,448 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:55:56" (3/3) ... [2021-10-29 05:55:56,449 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1121a.c [2021-10-29 05:55:56,464 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-29 05:55:56,464 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-29 05:55:56,510 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-29 05:55:56,516 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-29 05:55:56,516 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-29 05:55:56,530 INFO L276 IsEmpty]: Start isEmpty. Operand has 39 states, 37 states have (on average 1.7837837837837838) internal successors, (66), 38 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:55:56,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-29 05:55:56,535 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:55:56,536 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:55:56,537 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:55:56,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:55:56,542 INFO L85 PathProgramCache]: Analyzing trace with hash -159335407, now seen corresponding path program 1 times [2021-10-29 05:55:56,552 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:55:56,552 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076512617] [2021-10-29 05:55:56,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:55:56,553 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:55:56,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:55:56,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:55:56,690 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:55:56,690 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076512617] [2021-10-29 05:55:56,691 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2076512617] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 05:55:56,691 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:55:56,692 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-29 05:55:56,693 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783213047] [2021-10-29 05:55:56,698 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-29 05:55:56,698 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:55:56,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-29 05:55:56,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-29 05:55:56,713 INFO L87 Difference]: Start difference. First operand has 39 states, 37 states have (on average 1.7837837837837838) internal successors, (66), 38 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:55:56,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:55:56,731 INFO L93 Difference]: Finished difference Result 77 states and 131 transitions. [2021-10-29 05:55:56,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-29 05:55:56,732 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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 8 [2021-10-29 05:55:56,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:55:56,741 INFO L225 Difference]: With dead ends: 77 [2021-10-29 05:55:56,741 INFO L226 Difference]: Without dead ends: 37 [2021-10-29 05:55:56,744 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-29 05:55:56,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2021-10-29 05:55:56,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2021-10-29 05:55:56,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 36 states have (on average 1.5) internal successors, (54), 36 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:55:56,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 54 transitions. [2021-10-29 05:55:56,785 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 54 transitions. Word has length 8 [2021-10-29 05:55:56,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:55:56,785 INFO L470 AbstractCegarLoop]: Abstraction has 37 states and 54 transitions. [2021-10-29 05:55:56,785 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:55:56,786 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 54 transitions. [2021-10-29 05:55:56,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-29 05:55:56,787 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:55:56,787 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:55:56,787 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-29 05:55:56,788 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:55:56,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:55:56,791 INFO L85 PathProgramCache]: Analyzing trace with hash -1510972428, now seen corresponding path program 1 times [2021-10-29 05:55:56,791 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:55:56,791 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240399617] [2021-10-29 05:55:56,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:55:56,792 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:55:56,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 05:55:56,905 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-29 05:55:56,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 05:55:57,031 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-29 05:55:57,031 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-10-29 05:55:57,034 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 05:55:57,036 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-29 05:55:57,040 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1] [2021-10-29 05:55:57,042 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-29 05:55:57,081 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.10 05:55:57 BoogieIcfgContainer [2021-10-29 05:55:57,081 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-29 05:55:57,082 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-29 05:55:57,082 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-29 05:55:57,082 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-29 05:55:57,083 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:55:56" (3/4) ... [2021-10-29 05:55:57,087 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-29 05:55:57,087 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-29 05:55:57,090 INFO L168 Benchmark]: Toolchain (without parser) took 1949.00 ms. Allocated memory was 117.4 MB in the beginning and 165.7 MB in the end (delta: 48.2 MB). Free memory was 88.6 MB in the beginning and 110.8 MB in the end (delta: -22.2 MB). Peak memory consumption was 27.1 MB. Max. memory is 16.1 GB. [2021-10-29 05:55:57,090 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 117.4 MB. Free memory was 72.7 MB in the beginning and 72.6 MB in the end (delta: 68.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 05:55:57,093 INFO L168 Benchmark]: CACSL2BoogieTranslator took 325.81 ms. Allocated memory is still 117.4 MB. Free memory was 88.4 MB in the beginning and 87.1 MB in the end (delta: 1.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-29 05:55:57,094 INFO L168 Benchmark]: Boogie Procedure Inliner took 59.29 ms. Allocated memory is still 117.4 MB. Free memory was 86.9 MB in the beginning and 84.6 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 05:55:57,099 INFO L168 Benchmark]: Boogie Preprocessor took 51.81 ms. Allocated memory is still 117.4 MB. Free memory was 84.6 MB in the beginning and 82.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 05:55:57,100 INFO L168 Benchmark]: RCFGBuilder took 858.55 ms. Allocated memory was 117.4 MB in the beginning and 165.7 MB in the end (delta: 48.2 MB). Free memory was 82.3 MB in the beginning and 138.1 MB in the end (delta: -55.8 MB). Peak memory consumption was 32.7 MB. Max. memory is 16.1 GB. [2021-10-29 05:55:57,101 INFO L168 Benchmark]: TraceAbstraction took 641.23 ms. Allocated memory is still 165.7 MB. Free memory was 137.6 MB in the beginning and 111.6 MB in the end (delta: 26.0 MB). Peak memory consumption was 25.5 MB. Max. memory is 16.1 GB. [2021-10-29 05:55:57,102 INFO L168 Benchmark]: Witness Printer took 5.76 ms. Allocated memory is still 165.7 MB. Free memory was 111.6 MB in the beginning and 110.8 MB in the end (delta: 774.2 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 05:55:57,109 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 117.4 MB. Free memory was 72.7 MB in the beginning and 72.6 MB in the end (delta: 68.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 325.81 ms. Allocated memory is still 117.4 MB. Free memory was 88.4 MB in the beginning and 87.1 MB in the end (delta: 1.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 59.29 ms. Allocated memory is still 117.4 MB. Free memory was 86.9 MB in the beginning and 84.6 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 51.81 ms. Allocated memory is still 117.4 MB. Free memory was 84.6 MB in the beginning and 82.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 858.55 ms. Allocated memory was 117.4 MB in the beginning and 165.7 MB in the end (delta: 48.2 MB). Free memory was 82.3 MB in the beginning and 138.1 MB in the end (delta: -55.8 MB). Peak memory consumption was 32.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 641.23 ms. Allocated memory is still 165.7 MB. Free memory was 137.6 MB in the beginning and 111.6 MB in the end (delta: 26.0 MB). Peak memory consumption was 25.5 MB. Max. memory is 16.1 GB. * Witness Printer took 5.76 ms. Allocated memory is still 165.7 MB. Free memory was 111.6 MB in the beginning and 110.8 MB in the end (delta: 774.2 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s 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: 177]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of bitwiseOr at line 46, overapproximation of someUnaryDOUBLEoperation at line 22, overapproximation of bitwiseAnd at line 41, overapproximation of someBinaryArithmeticDOUBLEoperation at line 47, overapproximation of someBinaryDOUBLEComparisonOperation at line 18, overapproximation of bitwiseXor at line 42. Possible FailurePath: [L20-L23] static const double one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; [L171] double x = __VERIFIER_nondet_double(); [L172] double y = 0.0; [L26] __int32_t n, hx, hy, hz, ix, iy, sx, i; [L27] __uint32_t lx, ly, lz; VAL [one_fmod=1, Zero_fmod={9:0}] [L30] ieee_double_shape_type ew_u; [L31] ew_u.value = (x) [L32] EXPR ew_u.parts.msw [L32] (hx) = ew_u.parts.msw [L33] EXPR ew_u.parts.lsw [L33] (lx) = ew_u.parts.lsw [L36] ieee_double_shape_type ew_u; [L37] ew_u.value = (y) [L38] EXPR ew_u.parts.msw [L38] (hy) = ew_u.parts.msw [L39] EXPR ew_u.parts.lsw [L39] (ly) = ew_u.parts.lsw [L41] sx = hx & 0x80000000 [L42] hx ^= sx [L43] hy &= 0x7fffffff VAL [one_fmod=1, Zero_fmod={9:0}] [L45-L46] COND TRUE (hy | ly) == 0 || (hx >= 0x7ff00000) || ((hy | ((ly | -ly) >> 31)) > 0x7ff00000) [L47] return (x * y) / (x * y); VAL [one_fmod=1, Zero_fmod={9:0}] [L173] double res = fmod_double(x, y); [L18] return x != x; [L176] COND TRUE !isnan_double(res) [L177] reach_error() VAL [one_fmod=1, Zero_fmod={9:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 39 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.5s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 56 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=39occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 18 NumberOfCodeBlocks, 18 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 7 ConstructedInterpolants, 0 QuantifiedInterpolants, 7 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-10-29 05:55:57,168 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e60c4cab-e7f0-42cf-bb09-f5b2932c5c5c/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-b2eff8b [2021-10-29 05:55:59,441 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-29 05:55:59,445 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-29 05:55:59,477 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-29 05:55:59,478 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-29 05:55:59,479 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-29 05:55:59,480 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-29 05:55:59,483 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-29 05:55:59,485 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-29 05:55:59,486 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-29 05:55:59,487 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-29 05:55:59,488 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-29 05:55:59,489 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-29 05:55:59,490 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-29 05:55:59,491 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-29 05:55:59,493 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-29 05:55:59,494 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-29 05:55:59,495 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-29 05:55:59,497 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-29 05:55:59,499 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-29 05:55:59,501 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-29 05:55:59,503 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-29 05:55:59,504 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-29 05:55:59,505 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-29 05:55:59,509 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-29 05:55:59,509 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-29 05:55:59,510 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-29 05:55:59,511 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-29 05:55:59,511 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-29 05:55:59,512 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-29 05:55:59,513 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-29 05:55:59,514 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-29 05:55:59,515 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-29 05:55:59,515 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-29 05:55:59,517 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-29 05:55:59,517 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-29 05:55:59,518 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-29 05:55:59,518 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-29 05:55:59,519 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-29 05:55:59,520 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-29 05:55:59,520 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-29 05:55:59,521 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e60c4cab-e7f0-42cf-bb09-f5b2932c5c5c/bin/utaipan-SDwSMHVbGG/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-29 05:55:59,554 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-29 05:55:59,554 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-29 05:55:59,555 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-29 05:55:59,555 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-29 05:55:59,555 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-29 05:55:59,556 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-29 05:55:59,557 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-29 05:55:59,557 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-29 05:55:59,558 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-29 05:55:59,558 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-29 05:55:59,559 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-29 05:55:59,559 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-29 05:55:59,559 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-29 05:55:59,559 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-29 05:55:59,560 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-29 05:55:59,560 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-29 05:55:59,560 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-29 05:55:59,560 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-29 05:55:59,561 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-29 05:55:59,561 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-29 05:55:59,561 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-29 05:55:59,561 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-29 05:55:59,562 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-29 05:55:59,562 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-29 05:55:59,562 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-29 05:55:59,562 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-29 05:55:59,563 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 05:55:59,563 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-29 05:55:59,563 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-29 05:55:59,564 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-29 05:55:59,566 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-29 05:55:59,567 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-29 05:55:59,567 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-29 05:55:59,567 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-29 05:55:59,567 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-29 05:55:59,567 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_e60c4cab-e7f0-42cf-bb09-f5b2932c5c5c/bin/utaipan-SDwSMHVbGG/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e60c4cab-e7f0-42cf-bb09-f5b2932c5c5c/bin/utaipan-SDwSMHVbGG Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e2915ae970b23f9234beaed5f436ef87de022b558ff8241f79bda095bd417e23 [2021-10-29 05:55:59,967 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-29 05:55:59,987 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-29 05:55:59,990 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-29 05:55:59,991 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-29 05:55:59,992 INFO L275 PluginConnector]: CDTParser initialized [2021-10-29 05:55:59,992 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e60c4cab-e7f0-42cf-bb09-f5b2932c5c5c/bin/utaipan-SDwSMHVbGG/../../sv-benchmarks/c/float-newlib/double_req_bl_1121a.c [2021-10-29 05:56:00,062 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e60c4cab-e7f0-42cf-bb09-f5b2932c5c5c/bin/utaipan-SDwSMHVbGG/data/e135aaeb1/8f92170e5378464a9d5fff38dd061e45/FLAG464ae1543 [2021-10-29 05:56:00,555 INFO L306 CDTParser]: Found 1 translation units. [2021-10-29 05:56:00,556 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e60c4cab-e7f0-42cf-bb09-f5b2932c5c5c/sv-benchmarks/c/float-newlib/double_req_bl_1121a.c [2021-10-29 05:56:00,581 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e60c4cab-e7f0-42cf-bb09-f5b2932c5c5c/bin/utaipan-SDwSMHVbGG/data/e135aaeb1/8f92170e5378464a9d5fff38dd061e45/FLAG464ae1543 [2021-10-29 05:56:00,899 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e60c4cab-e7f0-42cf-bb09-f5b2932c5c5c/bin/utaipan-SDwSMHVbGG/data/e135aaeb1/8f92170e5378464a9d5fff38dd061e45 [2021-10-29 05:56:00,901 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-29 05:56:00,902 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-29 05:56:00,903 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-29 05:56:00,903 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-29 05:56:00,914 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-29 05:56:00,915 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:56:00" (1/1) ... [2021-10-29 05:56:00,916 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@511e2339 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:56:00, skipping insertion in model container [2021-10-29 05:56:00,916 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:56:00" (1/1) ... [2021-10-29 05:56:00,926 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-29 05:56:00,966 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-29 05:56:01,234 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e60c4cab-e7f0-42cf-bb09-f5b2932c5c5c/sv-benchmarks/c/float-newlib/double_req_bl_1121a.c[3883,3896] [2021-10-29 05:56:01,237 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 05:56:01,248 INFO L203 MainTranslator]: Completed pre-run [2021-10-29 05:56:01,291 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e60c4cab-e7f0-42cf-bb09-f5b2932c5c5c/sv-benchmarks/c/float-newlib/double_req_bl_1121a.c[3883,3896] [2021-10-29 05:56:01,292 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 05:56:01,310 INFO L208 MainTranslator]: Completed translation [2021-10-29 05:56:01,310 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:56:01 WrapperNode [2021-10-29 05:56:01,310 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-29 05:56:01,311 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-29 05:56:01,312 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-29 05:56:01,312 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-29 05:56:01,319 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:56:01" (1/1) ... [2021-10-29 05:56:01,332 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:56:01" (1/1) ... [2021-10-29 05:56:01,361 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-29 05:56:01,362 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-29 05:56:01,362 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-29 05:56:01,362 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-29 05:56:01,370 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:56:01" (1/1) ... [2021-10-29 05:56:01,375 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:56:01" (1/1) ... [2021-10-29 05:56:01,382 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:56:01" (1/1) ... [2021-10-29 05:56:01,394 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:56:01" (1/1) ... [2021-10-29 05:56:01,406 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:56:01" (1/1) ... [2021-10-29 05:56:01,423 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:56:01" (1/1) ... [2021-10-29 05:56:01,429 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:56:01" (1/1) ... [2021-10-29 05:56:01,444 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-29 05:56:01,450 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-29 05:56:01,450 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-29 05:56:01,451 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-29 05:56:01,451 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:56:01" (1/1) ... [2021-10-29 05:56:01,458 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 05:56:01,468 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e60c4cab-e7f0-42cf-bb09-f5b2932c5c5c/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 05:56:01,484 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e60c4cab-e7f0-42cf-bb09-f5b2932c5c5c/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-29 05:56:01,497 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e60c4cab-e7f0-42cf-bb09-f5b2932c5c5c/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-29 05:56:01,542 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2021-10-29 05:56:01,542 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2021-10-29 05:56:01,542 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-29 05:56:01,543 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-29 05:56:01,543 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8 [2021-10-29 05:56:01,543 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-29 05:56:01,544 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-29 05:56:01,545 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-29 05:56:01,545 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-29 05:56:01,545 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-29 05:56:04,905 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-29 05:56:04,905 INFO L299 CfgBuilder]: Removed 22 assume(true) statements. [2021-10-29 05:56:04,907 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:56:04 BoogieIcfgContainer [2021-10-29 05:56:04,907 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-29 05:56:04,908 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-29 05:56:04,908 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-29 05:56:04,911 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-29 05:56:04,911 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 05:56:00" (1/3) ... [2021-10-29 05:56:04,914 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ebcfb5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:56:04, skipping insertion in model container [2021-10-29 05:56:04,915 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:56:01" (2/3) ... [2021-10-29 05:56:04,915 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ebcfb5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:56:04, skipping insertion in model container [2021-10-29 05:56:04,915 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:56:04" (3/3) ... [2021-10-29 05:56:04,920 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1121a.c [2021-10-29 05:56:04,934 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-29 05:56:04,934 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-29 05:56:04,980 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-29 05:56:04,985 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-29 05:56:04,986 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-29 05:56:04,999 INFO L276 IsEmpty]: Start isEmpty. Operand has 55 states, 53 states have (on average 1.8113207547169812) internal successors, (96), 54 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:56:05,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-29 05:56:05,004 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:56:05,005 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:56:05,005 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:56:05,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:56:05,010 INFO L85 PathProgramCache]: Analyzing trace with hash 668833300, now seen corresponding path program 1 times [2021-10-29 05:56:05,021 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:56:05,021 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1593193035] [2021-10-29 05:56:05,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:56:05,022 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:56:05,023 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e60c4cab-e7f0-42cf-bb09-f5b2932c5c5c/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:56:05,025 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e60c4cab-e7f0-42cf-bb09-f5b2932c5c5c/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:56:05,028 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e60c4cab-e7f0-42cf-bb09-f5b2932c5c5c/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-29 05:56:05,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:56:05,912 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-29 05:56:05,915 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:56:06,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:56:06,015 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:56:06,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:56:06,098 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:56:06,098 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1593193035] [2021-10-29 05:56:06,099 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1593193035] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:56:06,099 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:56:06,099 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-29 05:56:06,101 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713458758] [2021-10-29 05:56:06,105 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-29 05:56:06,106 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 05:56:06,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-29 05:56:06,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-29 05:56:06,125 INFO L87 Difference]: Start difference. First operand has 55 states, 53 states have (on average 1.8113207547169812) internal successors, (96), 54 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 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) [2021-10-29 05:56:06,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:56:06,154 INFO L93 Difference]: Finished difference Result 108 states and 190 transitions. [2021-10-29 05:56:06,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-29 05:56:06,155 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 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 [2021-10-29 05:56:06,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:56:06,165 INFO L225 Difference]: With dead ends: 108 [2021-10-29 05:56:06,165 INFO L226 Difference]: Without dead ends: 52 [2021-10-29 05:56:06,167 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-29 05:56:06,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-10-29 05:56:06,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2021-10-29 05:56:06,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 51 states have (on average 1.5294117647058822) internal successors, (78), 51 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:56:06,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 78 transitions. [2021-10-29 05:56:06,211 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 78 transitions. Word has length 10 [2021-10-29 05:56:06,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:56:06,211 INFO L470 AbstractCegarLoop]: Abstraction has 52 states and 78 transitions. [2021-10-29 05:56:06,211 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 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) [2021-10-29 05:56:06,212 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 78 transitions. [2021-10-29 05:56:06,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-29 05:56:06,213 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:56:06,213 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:56:06,244 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e60c4cab-e7f0-42cf-bb09-f5b2932c5c5c/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-29 05:56:06,428 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e60c4cab-e7f0-42cf-bb09-f5b2932c5c5c/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:56:06,428 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:56:06,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:56:06,429 INFO L85 PathProgramCache]: Analyzing trace with hash 133394385, now seen corresponding path program 1 times [2021-10-29 05:56:06,430 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:56:06,430 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1637076520] [2021-10-29 05:56:06,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:56:06,431 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:56:06,431 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e60c4cab-e7f0-42cf-bb09-f5b2932c5c5c/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:56:06,433 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e60c4cab-e7f0-42cf-bb09-f5b2932c5c5c/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:56:06,439 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e60c4cab-e7f0-42cf-bb09-f5b2932c5c5c/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-29 05:56:07,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:56:07,442 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-29 05:56:07,444 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:56:21,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:56:21,749 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:56:38,494 WARN L860 $PredicateComparison]: unable to prove that (forall ((ULTIMATE.start_fmod_double_~x (_ FloatingPoint 11 53))) (not (let ((.cse0 (let ((.cse1 (fp.mul c_currentRoundingMode ULTIMATE.start_fmod_double_~x c_ULTIMATE.start_fmod_double_~y))) (fp.div c_currentRoundingMode .cse1 .cse1)))) (fp.eq .cse0 .cse0)))) is different from true [2021-10-29 05:57:05,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:57:05,421 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:57:05,422 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1637076520] [2021-10-29 05:57:05,422 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1637076520] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:57:05,422 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:57:05,422 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 11 [2021-10-29 05:57:05,423 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892260222] [2021-10-29 05:57:05,424 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-29 05:57:05,425 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 05:57:05,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-29 05:57:05,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=68, Unknown=3, NotChecked=16, Total=110 [2021-10-29 05:57:05,427 INFO L87 Difference]: Start difference. First operand 52 states and 78 transitions. Second operand has 11 states, 11 states have (on average 2.090909090909091) internal successors, (23), 11 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:57:08,243 WARN L838 $PredicateComparison]: unable to prove that (and (= (_ +zero 11 53) c_ULTIMATE.start_fmod_double_~y) (forall ((ULTIMATE.start_fmod_double_~x (_ FloatingPoint 11 53))) (not (let ((.cse0 (let ((.cse1 (fp.mul c_currentRoundingMode ULTIMATE.start_fmod_double_~x c_ULTIMATE.start_fmod_double_~y))) (fp.div c_currentRoundingMode .cse1 .cse1)))) (fp.eq .cse0 .cse0)))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false [2021-10-29 05:57:10,670 WARN L860 $PredicateComparison]: unable to prove that (and (= (_ +zero 11 53) c_ULTIMATE.start_fmod_double_~y) (forall ((ULTIMATE.start_fmod_double_~x (_ FloatingPoint 11 53))) (not (let ((.cse0 (let ((.cse1 (fp.mul c_currentRoundingMode ULTIMATE.start_fmod_double_~x c_ULTIMATE.start_fmod_double_~y))) (fp.div c_currentRoundingMode .cse1 .cse1)))) (fp.eq .cse0 .cse0)))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2021-10-29 05:57:24,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:57:24,169 INFO L93 Difference]: Finished difference Result 57 states and 82 transitions. [2021-10-29 05:57:24,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-29 05:57:24,205 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.090909090909091) internal successors, (23), 11 states have internal predecessors, (23), 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 12 [2021-10-29 05:57:24,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:57:24,207 INFO L225 Difference]: With dead ends: 57 [2021-10-29 05:57:24,207 INFO L226 Difference]: Without dead ends: 52 [2021-10-29 05:57:24,208 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 27.3s TimeCoverageRelationStatistics Valid=31, Invalid=82, Unknown=5, NotChecked=38, Total=156 [2021-10-29 05:57:24,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-10-29 05:57:24,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2021-10-29 05:57:24,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 51 states have (on average 1.5098039215686274) internal successors, (77), 51 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:57:24,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 77 transitions. [2021-10-29 05:57:24,215 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 77 transitions. Word has length 12 [2021-10-29 05:57:24,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:57:24,215 INFO L470 AbstractCegarLoop]: Abstraction has 52 states and 77 transitions. [2021-10-29 05:57:24,216 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.090909090909091) internal successors, (23), 11 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:57:24,216 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 77 transitions. [2021-10-29 05:57:24,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-29 05:57:24,217 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:57:24,217 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:57:24,241 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e60c4cab-e7f0-42cf-bb09-f5b2932c5c5c/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-29 05:57:24,417 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e60c4cab-e7f0-42cf-bb09-f5b2932c5c5c/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:57:24,418 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:57:24,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:57:24,419 INFO L85 PathProgramCache]: Analyzing trace with hash -910533226, now seen corresponding path program 1 times [2021-10-29 05:57:24,421 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:57:24,422 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1233246528] [2021-10-29 05:57:24,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:57:24,422 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:57:24,422 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e60c4cab-e7f0-42cf-bb09-f5b2932c5c5c/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:57:24,423 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e60c4cab-e7f0-42cf-bb09-f5b2932c5c5c/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:57:24,425 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e60c4cab-e7f0-42cf-bb09-f5b2932c5c5c/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-29 05:57:24,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:57:24,569 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-29 05:57:24,571 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:57:24,779 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 29 treesize of output 27 [2021-10-29 05:57:25,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:57:25,445 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:57:25,937 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 31 treesize of output 29 [2021-10-29 05:57:26,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:57:26,344 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:57:26,345 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1233246528] [2021-10-29 05:57:26,345 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1233246528] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:57:26,345 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:57:26,345 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 5] imperfect sequences [] total 7 [2021-10-29 05:57:26,346 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749855868] [2021-10-29 05:57:26,346 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-29 05:57:26,346 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 05:57:26,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-29 05:57:26,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-10-29 05:57:26,348 INFO L87 Difference]: Start difference. First operand 52 states and 77 transitions. Second operand has 7 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:57:26,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:57:26,629 INFO L93 Difference]: Finished difference Result 52 states and 77 transitions. [2021-10-29 05:57:26,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-29 05:57:26,631 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 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 [2021-10-29 05:57:26,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:57:26,631 INFO L225 Difference]: With dead ends: 52 [2021-10-29 05:57:26,632 INFO L226 Difference]: Without dead ends: 0 [2021-10-29 05:57:26,632 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-10-29 05:57:26,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-29 05:57:26,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-29 05:57:26,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:57:26,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-29 05:57:26,633 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2021-10-29 05:57:26,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:57:26,634 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-29 05:57:26,634 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:57:26,634 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-29 05:57:26,634 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-29 05:57:26,638 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 05:57:26,661 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e60c4cab-e7f0-42cf-bb09-f5b2932c5c5c/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-29 05:57:26,851 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e60c4cab-e7f0-42cf-bb09-f5b2932c5c5c/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:57:26,853 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-29 05:57:26,856 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:57:26,885 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:57:26,886 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:57:26,887 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:57:26,888 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:57:26,889 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:57:26,889 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:57:26,890 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:57:26,891 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:57:26,892 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:57:26,893 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:57:37,772 WARN L207 SmtUtils]: Spent 8.64 s on a formula simplification. DAG size of input: 13 DAG size of output: 7 [2021-10-29 05:57:37,774 INFO L857 garLoopResultBuilder]: For program point L35-2(lines 35 40) no Hoare annotation was computed. [2021-10-29 05:57:37,774 INFO L853 garLoopResultBuilder]: At program point L68-3(lines 68 69) the Hoare annotation is: false [2021-10-29 05:57:37,774 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-29 05:57:37,775 INFO L857 garLoopResultBuilder]: For program point L136-1(lines 136 141) no Hoare annotation was computed. [2021-10-29 05:57:37,775 INFO L857 garLoopResultBuilder]: For program point L103-1(lines 103 117) no Hoare annotation was computed. [2021-10-29 05:57:37,775 INFO L853 garLoopResultBuilder]: At program point L136-2(lines 136 141) the Hoare annotation is: false [2021-10-29 05:57:37,775 INFO L857 garLoopResultBuilder]: For program point L103-3(lines 103 117) no Hoare annotation was computed. [2021-10-29 05:57:37,776 INFO L857 garLoopResultBuilder]: For program point L120(lines 120 121) no Hoare annotation was computed. [2021-10-29 05:57:37,776 INFO L857 garLoopResultBuilder]: For program point L120-2(lines 25 163) no Hoare annotation was computed. [2021-10-29 05:57:37,777 INFO L857 garLoopResultBuilder]: For program point L71-2(lines 71 72) no Hoare annotation was computed. [2021-10-29 05:57:37,777 INFO L853 garLoopResultBuilder]: At program point L71-3(lines 71 72) the Hoare annotation is: false [2021-10-29 05:57:37,777 INFO L857 garLoopResultBuilder]: For program point L154(lines 154 159) no Hoare annotation was computed. [2021-10-29 05:57:37,777 INFO L857 garLoopResultBuilder]: For program point L154-1(lines 142 161) no Hoare annotation was computed. [2021-10-29 05:57:37,777 INFO L857 garLoopResultBuilder]: For program point L154-2(lines 154 159) no Hoare annotation was computed. [2021-10-29 05:57:37,778 INFO L857 garLoopResultBuilder]: For program point L55(lines 25 163) no Hoare annotation was computed. [2021-10-29 05:57:37,778 INFO L857 garLoopResultBuilder]: For program point L122-1(lines 25 163) no Hoare annotation was computed. [2021-10-29 05:57:37,778 INFO L857 garLoopResultBuilder]: For program point L56(lines 56 62) no Hoare annotation was computed. [2021-10-29 05:57:37,778 INFO L857 garLoopResultBuilder]: For program point L106(lines 106 107) no Hoare annotation was computed. [2021-10-29 05:57:37,778 INFO L857 garLoopResultBuilder]: For program point L106-2(lines 103 117) no Hoare annotation was computed. [2021-10-29 05:57:37,778 INFO L857 garLoopResultBuilder]: For program point L57-2(lines 57 58) no Hoare annotation was computed. [2021-10-29 05:57:37,779 INFO L853 garLoopResultBuilder]: At program point L57-3(lines 57 58) the Hoare annotation is: false [2021-10-29 05:57:37,779 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-29 05:57:37,779 INFO L853 garLoopResultBuilder]: At program point L108-1(lines 103 117) the Hoare annotation is: false [2021-10-29 05:57:37,779 INFO L857 garLoopResultBuilder]: For program point L93(lines 93 99) no Hoare annotation was computed. [2021-10-29 05:57:37,779 INFO L857 garLoopResultBuilder]: For program point L93-2(lines 89 100) no Hoare annotation was computed. [2021-10-29 05:57:37,780 INFO L857 garLoopResultBuilder]: For program point L60-2(lines 60 61) no Hoare annotation was computed. [2021-10-29 05:57:37,780 INFO L853 garLoopResultBuilder]: At program point L60-3(lines 60 61) the Hoare annotation is: false [2021-10-29 05:57:37,780 INFO L857 garLoopResultBuilder]: For program point L176(lines 176 179) no Hoare annotation was computed. [2021-10-29 05:57:37,780 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-29 05:57:37,780 INFO L857 garLoopResultBuilder]: For program point L177(line 177) no Hoare annotation was computed. [2021-10-29 05:57:37,780 INFO L857 garLoopResultBuilder]: For program point L144(lines 144 153) no Hoare annotation was computed. [2021-10-29 05:57:37,781 INFO L857 garLoopResultBuilder]: For program point L45(lines 45 47) no Hoare annotation was computed. [2021-10-29 05:57:37,781 INFO L857 garLoopResultBuilder]: For program point L29-1(lines 29 34) no Hoare annotation was computed. [2021-10-29 05:57:37,781 INFO L853 garLoopResultBuilder]: At program point L29-2(lines 29 34) the Hoare annotation is: (and (= (_ +zero 11 53) ULTIMATE.start_fmod_double_~y) (= currentRoundingMode roundNearestTiesToEven)) [2021-10-29 05:57:37,781 INFO L857 garLoopResultBuilder]: For program point L112(lines 112 113) no Hoare annotation was computed. [2021-10-29 05:57:37,782 INFO L853 garLoopResultBuilder]: At program point L162(lines 25 163) the Hoare annotation is: (exists ((ULTIMATE.start_fmod_double_~x (_ FloatingPoint 11 53))) (= |ULTIMATE.start_fmod_double_#res| (let ((.cse0 (fp.mul roundNearestTiesToEven ULTIMATE.start_fmod_double_~x (_ +zero 11 53)))) (fp.div roundNearestTiesToEven .cse0 .cse0)))) [2021-10-29 05:57:37,782 INFO L853 garLoopResultBuilder]: At program point L129-2(lines 129 133) the Hoare annotation is: false [2021-10-29 05:57:37,782 INFO L857 garLoopResultBuilder]: For program point L129-3(lines 25 163) no Hoare annotation was computed. [2021-10-29 05:57:37,782 INFO L857 garLoopResultBuilder]: For program point L147(lines 147 153) no Hoare annotation was computed. [2021-10-29 05:57:37,782 INFO L857 garLoopResultBuilder]: For program point L81(lines 81 87) no Hoare annotation was computed. [2021-10-29 05:57:37,782 INFO L857 garLoopResultBuilder]: For program point L48(lines 48 53) no Hoare annotation was computed. [2021-10-29 05:57:37,783 INFO L857 garLoopResultBuilder]: For program point L81-2(lines 25 163) no Hoare annotation was computed. [2021-10-29 05:57:37,783 INFO L857 garLoopResultBuilder]: For program point L48-2(lines 25 163) no Hoare annotation was computed. [2021-10-29 05:57:37,783 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-29 05:57:37,783 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 177) no Hoare annotation was computed. [2021-10-29 05:57:37,783 INFO L860 garLoopResultBuilder]: At program point L181(lines 165 182) the Hoare annotation is: true [2021-10-29 05:57:37,784 INFO L857 garLoopResultBuilder]: For program point L49(lines 49 50) no Hoare annotation was computed. [2021-10-29 05:57:37,784 INFO L857 garLoopResultBuilder]: For program point L66(lines 25 163) no Hoare annotation was computed. [2021-10-29 05:57:37,784 INFO L857 garLoopResultBuilder]: For program point L67(lines 67 73) no Hoare annotation was computed. [2021-10-29 05:57:37,784 INFO L857 garLoopResultBuilder]: For program point L51(lines 51 52) no Hoare annotation was computed. [2021-10-29 05:57:37,784 INFO L853 garLoopResultBuilder]: At program point L18(line 18) the Hoare annotation is: (= (_ bv1 32) |ULTIMATE.start_isnan_double_#res|) [2021-10-29 05:57:37,785 INFO L857 garLoopResultBuilder]: For program point L134(lines 134 161) no Hoare annotation was computed. [2021-10-29 05:57:37,785 INFO L857 garLoopResultBuilder]: For program point L35(lines 35 40) no Hoare annotation was computed. [2021-10-29 05:57:37,785 INFO L857 garLoopResultBuilder]: For program point L35-1(lines 25 163) no Hoare annotation was computed. [2021-10-29 05:57:37,785 INFO L857 garLoopResultBuilder]: For program point L68-2(lines 68 69) no Hoare annotation was computed. [2021-10-29 05:57:37,789 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2021-10-29 05:57:37,791 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-29 05:57:37,805 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-29 05:57:37,806 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-29 05:57:37,807 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_fmod_double_~x,QUANTIFIED] [2021-10-29 05:57:37,807 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-29 05:57:37,807 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_fmod_double_~x,QUANTIFIED] [2021-10-29 05:57:37,808 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-29 05:57:37,809 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-29 05:57:37,809 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_fmod_double_~x,QUANTIFIED] [2021-10-29 05:57:37,809 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-29 05:57:37,809 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_fmod_double_~x,QUANTIFIED] [2021-10-29 05:57:37,810 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-29 05:57:37,811 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-29 05:57:37,812 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.10 05:57:37 BoogieIcfgContainer [2021-10-29 05:57:37,812 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-29 05:57:37,813 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-29 05:57:37,813 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-29 05:57:37,813 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-29 05:57:37,814 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:56:04" (3/4) ... [2021-10-29 05:57:37,817 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-29 05:57:37,830 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2021-10-29 05:57:37,831 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2021-10-29 05:57:37,831 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-29 05:57:37,831 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-29 05:57:37,878 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e60c4cab-e7f0-42cf-bb09-f5b2932c5c5c/bin/utaipan-SDwSMHVbGG/witness.graphml [2021-10-29 05:57:37,878 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-29 05:57:37,883 INFO L168 Benchmark]: Toolchain (without parser) took 96979.80 ms. Allocated memory was 73.4 MB in the beginning and 90.2 MB in the end (delta: 16.8 MB). Free memory was 53.9 MB in the beginning and 40.8 MB in the end (delta: 13.1 MB). Peak memory consumption was 30.1 MB. Max. memory is 16.1 GB. [2021-10-29 05:57:37,884 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 73.4 MB. Free memory was 53.8 MB in the beginning and 53.7 MB in the end (delta: 54.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 05:57:37,884 INFO L168 Benchmark]: CACSL2BoogieTranslator took 407.38 ms. Allocated memory is still 73.4 MB. Free memory was 53.8 MB in the beginning and 50.9 MB in the end (delta: 2.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-29 05:57:37,885 INFO L168 Benchmark]: Boogie Procedure Inliner took 49.53 ms. Allocated memory is still 73.4 MB. Free memory was 50.9 MB in the beginning and 48.5 MB in the end (delta: 2.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-29 05:57:37,887 INFO L168 Benchmark]: Boogie Preprocessor took 87.30 ms. Allocated memory is still 73.4 MB. Free memory was 48.5 MB in the beginning and 46.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 05:57:37,888 INFO L168 Benchmark]: RCFGBuilder took 3457.36 ms. Allocated memory is still 73.4 MB. Free memory was 46.4 MB in the beginning and 50.2 MB in the end (delta: -3.8 MB). Peak memory consumption was 19.5 MB. Max. memory is 16.1 GB. [2021-10-29 05:57:37,888 INFO L168 Benchmark]: TraceAbstraction took 92903.57 ms. Allocated memory was 73.4 MB in the beginning and 90.2 MB in the end (delta: 16.8 MB). Free memory was 49.8 MB in the beginning and 43.5 MB in the end (delta: 6.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 16.1 GB. [2021-10-29 05:57:37,888 INFO L168 Benchmark]: Witness Printer took 69.00 ms. Allocated memory is still 90.2 MB. Free memory was 43.5 MB in the beginning and 40.8 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 05:57:37,890 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 73.4 MB. Free memory was 53.8 MB in the beginning and 53.7 MB in the end (delta: 54.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 407.38 ms. Allocated memory is still 73.4 MB. Free memory was 53.8 MB in the beginning and 50.9 MB in the end (delta: 2.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 49.53 ms. Allocated memory is still 73.4 MB. Free memory was 50.9 MB in the beginning and 48.5 MB in the end (delta: 2.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 87.30 ms. Allocated memory is still 73.4 MB. Free memory was 48.5 MB in the beginning and 46.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 3457.36 ms. Allocated memory is still 73.4 MB. Free memory was 46.4 MB in the beginning and 50.2 MB in the end (delta: -3.8 MB). Peak memory consumption was 19.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 92903.57 ms. Allocated memory was 73.4 MB in the beginning and 90.2 MB in the end (delta: 16.8 MB). Free memory was 49.8 MB in the beginning and 43.5 MB in the end (delta: 6.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 16.1 GB. * Witness Printer took 69.00 ms. Allocated memory is still 90.2 MB. Free memory was 43.5 MB in the beginning and 40.8 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_fmod_double_~x,QUANTIFIED] - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_fmod_double_~x,QUANTIFIED] - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_fmod_double_~x,QUANTIFIED] - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_fmod_double_~x,QUANTIFIED] - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven * 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 - PositiveResult [Line: 177]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 55 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 92.8s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 19.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 10.9s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 155 SDtfs, 5 SDslu, 471 SDs, 0 SdLazy, 26 SolverSat, 3 SolverUnsat, 4 SolverUnknown, 0 SolverNotchecked, 13.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 70 GetRequests, 52 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 2 IntricatePredicates, 1 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 28.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=55occurred in iteration=0, InterpolantAutomatonStates: 13, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 11 LocationsWithAnnotation, 11 PreInvPairs, 15 NumberOfFragments, 31 HoareAnnotationTreeSize, 11 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 11 FomulaSimplificationsInter, 23 FormulaSimplificationTreeSizeReductionInter, 10.8s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 1.7s SatisfiabilityAnalysisTime, 60.0s InterpolantComputationTime, 36 NumberOfCodeBlocks, 36 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 66 ConstructedInterpolants, 13 QuantifiedInterpolants, 397 SizeOfPredicates, 18 NumberOfNonLiveVariables, 199 ConjunctsInSsa, 21 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 18]: Loop Invariant Derived loop invariant: 1bv32 == \result - InvariantResult [Line: 165]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 129]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 57]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 71]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 136]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 103]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 60]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 25]: Loop Invariant [2021-10-29 05:57:37,905 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-29 05:57:37,905 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-29 05:57:37,905 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_fmod_double_~x,QUANTIFIED] [2021-10-29 05:57:37,905 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-29 05:57:37,906 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_fmod_double_~x,QUANTIFIED] [2021-10-29 05:57:37,906 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-29 05:57:37,906 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-29 05:57:37,906 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_fmod_double_~x,QUANTIFIED] [2021-10-29 05:57:37,906 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-29 05:57:37,906 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_fmod_double_~x,QUANTIFIED] Derived loop invariant: (\exists ULTIMATE.start_fmod_double_~x : C_DOUBLE :: \result == ~fp.div~DOUBLE(~roundNearestTiesToEven, ~fp.mul~DOUBLE(~roundNearestTiesToEven, ULTIMATE.start_fmod_double_~x, ~Pluszero~LONGDOUBLE()), ~fp.mul~DOUBLE(~roundNearestTiesToEven, ULTIMATE.start_fmod_double_~x, ~Pluszero~LONGDOUBLE()))) - InvariantResult [Line: 68]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 29]: Loop Invariant [2021-10-29 05:57:37,907 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-29 05:57:37,907 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven Derived loop invariant: ~Pluszero~LONGDOUBLE() == y && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven RESULT: Ultimate proved your program to be correct! [2021-10-29 05:57:38,112 WARN L435 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e60c4cab-e7f0-42cf-bb09-f5b2932c5c5c/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forcibly destroying the process [2021-10-29 05:57:38,195 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e60c4cab-e7f0-42cf-bb09-f5b2932c5c5c/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 137 Received shutdown request...