./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/floats-cbmc-regression/float-no-simp3.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 57096758 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_075591a4-9a7b-4692-97fd-1ccb962a77bf/bin/utaipan-mTDlp9Zugs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_075591a4-9a7b-4692-97fd-1ccb962a77bf/bin/utaipan-mTDlp9Zugs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_075591a4-9a7b-4692-97fd-1ccb962a77bf/bin/utaipan-mTDlp9Zugs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_075591a4-9a7b-4692-97fd-1ccb962a77bf/bin/utaipan-mTDlp9Zugs/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-cbmc-regression/float-no-simp3.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_075591a4-9a7b-4692-97fd-1ccb962a77bf/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_075591a4-9a7b-4692-97fd-1ccb962a77bf/bin/utaipan-mTDlp9Zugs --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 80f4c7cd3af7d4ef31d93e6369e6026704f12fbd .............................................................................................................................................................................................................................................. 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_075591a4-9a7b-4692-97fd-1ccb962a77bf/bin/utaipan-mTDlp9Zugs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_075591a4-9a7b-4692-97fd-1ccb962a77bf/bin/utaipan-mTDlp9Zugs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_075591a4-9a7b-4692-97fd-1ccb962a77bf/bin/utaipan-mTDlp9Zugs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_075591a4-9a7b-4692-97fd-1ccb962a77bf/bin/utaipan-mTDlp9Zugs/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-cbmc-regression/float-no-simp3.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_075591a4-9a7b-4692-97fd-1ccb962a77bf/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_075591a4-9a7b-4692-97fd-1ccb962a77bf/bin/utaipan-mTDlp9Zugs --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 80f4c7cd3af7d4ef31d93e6369e6026704f12fbd ..................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-5709675 [2021-10-16 01:59:25,039 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-16 01:59:25,041 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-16 01:59:25,073 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-16 01:59:25,074 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-16 01:59:25,075 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-16 01:59:25,077 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-16 01:59:25,079 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-16 01:59:25,081 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-16 01:59:25,082 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-16 01:59:25,084 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-16 01:59:25,085 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-16 01:59:25,086 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-16 01:59:25,087 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-16 01:59:25,092 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-16 01:59:25,094 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-16 01:59:25,096 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-16 01:59:25,099 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-16 01:59:25,102 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-16 01:59:25,107 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-16 01:59:25,108 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-16 01:59:25,112 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-16 01:59:25,113 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-16 01:59:25,114 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-16 01:59:25,118 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-16 01:59:25,118 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-16 01:59:25,119 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-16 01:59:25,120 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-16 01:59:25,121 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-16 01:59:25,122 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-16 01:59:25,122 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-16 01:59:25,123 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-16 01:59:25,124 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-16 01:59:25,125 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-16 01:59:25,126 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-16 01:59:25,127 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-16 01:59:25,127 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-16 01:59:25,128 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-16 01:59:25,128 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-16 01:59:25,129 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-16 01:59:25,130 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-16 01:59:25,131 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_075591a4-9a7b-4692-97fd-1ccb962a77bf/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-16 01:59:25,166 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-16 01:59:25,167 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-16 01:59:25,168 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-16 01:59:25,168 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-16 01:59:25,168 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-16 01:59:25,169 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-16 01:59:25,169 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-16 01:59:25,169 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-16 01:59:25,170 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-16 01:59:25,170 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-16 01:59:25,170 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-16 01:59:25,171 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-16 01:59:25,171 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-16 01:59:25,172 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-16 01:59:25,172 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-16 01:59:25,173 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-16 01:59:25,173 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-16 01:59:25,173 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-16 01:59:25,174 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-16 01:59:25,174 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-16 01:59:25,174 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-16 01:59:25,175 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-16 01:59:25,175 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-16 01:59:25,178 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-16 01:59:25,179 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-16 01:59:25,179 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-16 01:59:25,179 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-16 01:59:25,179 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-16 01:59:25,180 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-16 01:59:25,180 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-16 01:59:25,181 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 01:59:25,181 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-16 01:59:25,181 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-16 01:59:25,182 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-16 01:59:25,182 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-16 01:59:25,182 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-16 01:59:25,183 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-16 01:59:25,183 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-16 01:59:25,184 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-16 01:59:25,184 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_075591a4-9a7b-4692-97fd-1ccb962a77bf/bin/utaipan-mTDlp9Zugs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_075591a4-9a7b-4692-97fd-1ccb962a77bf/bin/utaipan-mTDlp9Zugs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 80f4c7cd3af7d4ef31d93e6369e6026704f12fbd [2021-10-16 01:59:25,417 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-16 01:59:25,440 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-16 01:59:25,444 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-16 01:59:25,445 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-16 01:59:25,445 INFO L275 PluginConnector]: CDTParser initialized [2021-10-16 01:59:25,446 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_075591a4-9a7b-4692-97fd-1ccb962a77bf/bin/utaipan-mTDlp9Zugs/../../sv-benchmarks/c/floats-cbmc-regression/float-no-simp3.c [2021-10-16 01:59:25,567 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_075591a4-9a7b-4692-97fd-1ccb962a77bf/bin/utaipan-mTDlp9Zugs/data/65d6a55a4/6d6bfb30613c4edc88f1aabfc6b893c6/FLAG7092f2458 [2021-10-16 01:59:26,051 INFO L306 CDTParser]: Found 1 translation units. [2021-10-16 01:59:26,052 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_075591a4-9a7b-4692-97fd-1ccb962a77bf/sv-benchmarks/c/floats-cbmc-regression/float-no-simp3.c [2021-10-16 01:59:26,057 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_075591a4-9a7b-4692-97fd-1ccb962a77bf/bin/utaipan-mTDlp9Zugs/data/65d6a55a4/6d6bfb30613c4edc88f1aabfc6b893c6/FLAG7092f2458 [2021-10-16 01:59:26,467 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_075591a4-9a7b-4692-97fd-1ccb962a77bf/bin/utaipan-mTDlp9Zugs/data/65d6a55a4/6d6bfb30613c4edc88f1aabfc6b893c6 [2021-10-16 01:59:26,469 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-16 01:59:26,470 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-16 01:59:26,474 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-16 01:59:26,474 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-16 01:59:26,478 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-16 01:59:26,478 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 01:59:26" (1/1) ... [2021-10-16 01:59:26,480 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33f94514 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:59:26, skipping insertion in model container [2021-10-16 01:59:26,480 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 01:59:26" (1/1) ... [2021-10-16 01:59:26,490 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-16 01:59:26,507 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-16 01:59:26,670 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_075591a4-9a7b-4692-97fd-1ccb962a77bf/sv-benchmarks/c/floats-cbmc-regression/float-no-simp3.c[358,371] [2021-10-16 01:59:26,673 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 01:59:26,681 INFO L203 MainTranslator]: Completed pre-run [2021-10-16 01:59:26,695 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_075591a4-9a7b-4692-97fd-1ccb962a77bf/sv-benchmarks/c/floats-cbmc-regression/float-no-simp3.c[358,371] [2021-10-16 01:59:26,696 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 01:59:26,707 INFO L208 MainTranslator]: Completed translation [2021-10-16 01:59:26,708 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:59:26 WrapperNode [2021-10-16 01:59:26,708 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-16 01:59:26,709 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-16 01:59:26,709 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-16 01:59:26,709 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-16 01:59:26,715 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:59:26" (1/1) ... [2021-10-16 01:59:26,721 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:59:26" (1/1) ... [2021-10-16 01:59:26,737 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-16 01:59:26,738 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-16 01:59:26,738 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-16 01:59:26,738 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-16 01:59:26,746 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:59:26" (1/1) ... [2021-10-16 01:59:26,746 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:59:26" (1/1) ... [2021-10-16 01:59:26,747 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:59:26" (1/1) ... [2021-10-16 01:59:26,747 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:59:26" (1/1) ... [2021-10-16 01:59:26,751 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:59:26" (1/1) ... [2021-10-16 01:59:26,752 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:59:26" (1/1) ... [2021-10-16 01:59:26,753 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:59:26" (1/1) ... [2021-10-16 01:59:26,754 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-16 01:59:26,755 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-16 01:59:26,755 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-16 01:59:26,755 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-16 01:59:26,756 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:59:26" (1/1) ... [2021-10-16 01:59:26,762 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 01:59:26,774 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_075591a4-9a7b-4692-97fd-1ccb962a77bf/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 01:59:26,791 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_075591a4-9a7b-4692-97fd-1ccb962a77bf/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-16 01:59:26,806 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_075591a4-9a7b-4692-97fd-1ccb962a77bf/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-16 01:59:26,833 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-16 01:59:26,833 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-16 01:59:26,835 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-16 01:59:26,835 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-16 01:59:27,005 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-16 01:59:27,006 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-10-16 01:59:27,008 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 01:59:27 BoogieIcfgContainer [2021-10-16 01:59:27,008 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-16 01:59:27,010 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-16 01:59:27,010 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-16 01:59:27,020 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-16 01:59:27,020 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 01:59:26" (1/3) ... [2021-10-16 01:59:27,021 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54c672c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 01:59:27, skipping insertion in model container [2021-10-16 01:59:27,021 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:59:26" (2/3) ... [2021-10-16 01:59:27,022 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54c672c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 01:59:27, skipping insertion in model container [2021-10-16 01:59:27,022 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 01:59:27" (3/3) ... [2021-10-16 01:59:27,023 INFO L111 eAbstractionObserver]: Analyzing ICFG float-no-simp3.c [2021-10-16 01:59:27,028 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-16 01:59:27,029 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-16 01:59:27,075 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-16 01:59:27,082 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, mConcurrency=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 [2021-10-16 01:59:27,083 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-16 01:59:27,097 INFO L276 IsEmpty]: Start isEmpty. Operand has 6 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 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) [2021-10-16 01:59:27,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-16 01:59:27,102 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 01:59:27,103 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-16 01:59:27,104 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 01:59:27,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 01:59:27,110 INFO L82 PathProgramCache]: Analyzing trace with hash 42445, now seen corresponding path program 1 times [2021-10-16 01:59:27,119 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 01:59:27,120 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013092712] [2021-10-16 01:59:27,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 01:59:27,121 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 01:59:27,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-16 01:59:27,228 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-16 01:59:27,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-16 01:59:27,288 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-16 01:59:27,290 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-16 01:59:27,294 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 01:59:27,297 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-16 01:59:27,311 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-16 01:59:27,326 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 01:59:27 BoogieIcfgContainer [2021-10-16 01:59:27,327 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-16 01:59:27,327 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-16 01:59:27,328 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-16 01:59:27,328 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-16 01:59:27,328 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 01:59:27" (3/4) ... [2021-10-16 01:59:27,331 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-16 01:59:27,332 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-16 01:59:27,334 INFO L168 Benchmark]: Toolchain (without parser) took 862.17 ms. Allocated memory is still 102.8 MB. Free memory was 68.0 MB in the beginning and 52.9 MB in the end (delta: 15.0 MB). Peak memory consumption was 13.7 MB. Max. memory is 16.1 GB. [2021-10-16 01:59:27,336 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 102.8 MB. Free memory is still 55.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 01:59:27,338 INFO L168 Benchmark]: CACSL2BoogieTranslator took 234.08 ms. Allocated memory is still 102.8 MB. Free memory was 67.8 MB in the beginning and 77.1 MB in the end (delta: -9.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-16 01:59:27,340 INFO L168 Benchmark]: Boogie Procedure Inliner took 28.37 ms. Allocated memory is still 102.8 MB. Free memory was 77.1 MB in the beginning and 75.7 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 01:59:27,341 INFO L168 Benchmark]: Boogie Preprocessor took 16.40 ms. Allocated memory is still 102.8 MB. Free memory was 75.7 MB in the beginning and 74.7 MB in the end (delta: 958.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 01:59:27,343 INFO L168 Benchmark]: RCFGBuilder took 253.56 ms. Allocated memory is still 102.8 MB. Free memory was 74.7 MB in the beginning and 65.8 MB in the end (delta: 8.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-16 01:59:27,345 INFO L168 Benchmark]: TraceAbstraction took 316.58 ms. Allocated memory is still 102.8 MB. Free memory was 65.5 MB in the beginning and 53.2 MB in the end (delta: 12.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-16 01:59:27,351 INFO L168 Benchmark]: Witness Printer took 4.37 ms. Allocated memory is still 102.8 MB. Free memory was 53.2 MB in the beginning and 52.9 MB in the end (delta: 319.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 01:59:27,357 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 102.8 MB. Free memory is still 55.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 234.08 ms. Allocated memory is still 102.8 MB. Free memory was 67.8 MB in the beginning and 77.1 MB in the end (delta: -9.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 28.37 ms. Allocated memory is still 102.8 MB. Free memory was 77.1 MB in the beginning and 75.7 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 16.40 ms. Allocated memory is still 102.8 MB. Free memory was 75.7 MB in the beginning and 74.7 MB in the end (delta: 958.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 253.56 ms. Allocated memory is still 102.8 MB. Free memory was 74.7 MB in the beginning and 65.8 MB in the end (delta: 8.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 316.58 ms. Allocated memory is still 102.8 MB. Free memory was 65.5 MB in the beginning and 53.2 MB in the end (delta: 12.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Witness Printer took 4.37 ms. Allocated memory is still 102.8 MB. Free memory was 53.2 MB in the beginning and 52.9 MB in the end (delta: 319.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 10]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of to_int at line 10, overapproximation of someBinaryArithmeticFLOAToperation at line 8. Possible FailurePath: [L8] float fs1=2.0f/6.0f; [L9] float fs2=fs1*6.0f; [L10] COND TRUE !((int)fs2==2) [L10] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 6 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 238.1ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 8.8ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 10.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=6occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 5.8ms SsaConstructionTime, 46.9ms SatisfiabilityAnalysisTime, 0.0ms InterpolantComputationTime, 3 NumberOfCodeBlocks, 3 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-10-16 01:59:27,411 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_075591a4-9a7b-4692-97fd-1ccb962a77bf/bin/utaipan-mTDlp9Zugs/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-5709675 [2021-10-16 01:59:29,893 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-16 01:59:29,897 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-16 01:59:29,951 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-16 01:59:29,952 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-16 01:59:29,956 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-16 01:59:29,958 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-16 01:59:29,962 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-16 01:59:29,965 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-16 01:59:29,973 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-16 01:59:29,975 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-16 01:59:29,976 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-16 01:59:29,977 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-16 01:59:29,980 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-16 01:59:29,982 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-16 01:59:29,986 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-16 01:59:29,988 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-16 01:59:29,989 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-16 01:59:29,991 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-16 01:59:29,998 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-16 01:59:30,000 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-16 01:59:30,002 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-16 01:59:30,005 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-16 01:59:30,006 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-16 01:59:30,015 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-16 01:59:30,015 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-16 01:59:30,016 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-16 01:59:30,018 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-16 01:59:30,018 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-16 01:59:30,019 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-16 01:59:30,020 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-16 01:59:30,021 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-16 01:59:30,023 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-16 01:59:30,024 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-16 01:59:30,025 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-16 01:59:30,026 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-16 01:59:30,026 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-16 01:59:30,027 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-16 01:59:30,027 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-16 01:59:30,029 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-16 01:59:30,029 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-16 01:59:30,030 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_075591a4-9a7b-4692-97fd-1ccb962a77bf/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-16 01:59:30,073 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-16 01:59:30,073 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-16 01:59:30,074 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-16 01:59:30,075 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-16 01:59:30,075 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-16 01:59:30,075 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-16 01:59:30,075 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-16 01:59:30,076 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-16 01:59:30,076 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-16 01:59:30,077 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-16 01:59:30,078 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-16 01:59:30,079 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-16 01:59:30,079 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-16 01:59:30,079 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-16 01:59:30,079 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-16 01:59:30,079 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-16 01:59:30,079 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-16 01:59:30,080 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-16 01:59:30,080 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-16 01:59:30,080 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-16 01:59:30,080 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-16 01:59:30,080 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-16 01:59:30,081 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-16 01:59:30,081 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-16 01:59:30,081 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-16 01:59:30,081 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-16 01:59:30,081 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 01:59:30,082 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-16 01:59:30,082 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-16 01:59:30,082 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-16 01:59:30,082 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-16 01:59:30,082 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-16 01:59:30,083 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-16 01:59:30,083 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-16 01:59:30,083 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-16 01:59:30,084 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_075591a4-9a7b-4692-97fd-1ccb962a77bf/bin/utaipan-mTDlp9Zugs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_075591a4-9a7b-4692-97fd-1ccb962a77bf/bin/utaipan-mTDlp9Zugs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 80f4c7cd3af7d4ef31d93e6369e6026704f12fbd [2021-10-16 01:59:30,510 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-16 01:59:30,537 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-16 01:59:30,541 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-16 01:59:30,542 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-16 01:59:30,543 INFO L275 PluginConnector]: CDTParser initialized [2021-10-16 01:59:30,546 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_075591a4-9a7b-4692-97fd-1ccb962a77bf/bin/utaipan-mTDlp9Zugs/../../sv-benchmarks/c/floats-cbmc-regression/float-no-simp3.c [2021-10-16 01:59:30,620 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_075591a4-9a7b-4692-97fd-1ccb962a77bf/bin/utaipan-mTDlp9Zugs/data/a0afda1f6/6de5e7ba96a1478f90f7cedf04d1db4f/FLAGa3c207a12 [2021-10-16 01:59:31,185 INFO L306 CDTParser]: Found 1 translation units. [2021-10-16 01:59:31,187 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_075591a4-9a7b-4692-97fd-1ccb962a77bf/sv-benchmarks/c/floats-cbmc-regression/float-no-simp3.c [2021-10-16 01:59:31,193 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_075591a4-9a7b-4692-97fd-1ccb962a77bf/bin/utaipan-mTDlp9Zugs/data/a0afda1f6/6de5e7ba96a1478f90f7cedf04d1db4f/FLAGa3c207a12 [2021-10-16 01:59:31,551 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_075591a4-9a7b-4692-97fd-1ccb962a77bf/bin/utaipan-mTDlp9Zugs/data/a0afda1f6/6de5e7ba96a1478f90f7cedf04d1db4f [2021-10-16 01:59:31,557 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-16 01:59:31,558 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-16 01:59:31,560 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-16 01:59:31,561 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-16 01:59:31,567 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-16 01:59:31,568 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 01:59:31" (1/1) ... [2021-10-16 01:59:31,569 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15674b0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:59:31, skipping insertion in model container [2021-10-16 01:59:31,569 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 01:59:31" (1/1) ... [2021-10-16 01:59:31,581 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-16 01:59:31,593 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-16 01:59:31,736 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_075591a4-9a7b-4692-97fd-1ccb962a77bf/sv-benchmarks/c/floats-cbmc-regression/float-no-simp3.c[358,371] [2021-10-16 01:59:31,740 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 01:59:31,753 INFO L203 MainTranslator]: Completed pre-run [2021-10-16 01:59:31,767 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_075591a4-9a7b-4692-97fd-1ccb962a77bf/sv-benchmarks/c/floats-cbmc-regression/float-no-simp3.c[358,371] [2021-10-16 01:59:31,768 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 01:59:31,782 INFO L208 MainTranslator]: Completed translation [2021-10-16 01:59:31,783 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:59:31 WrapperNode [2021-10-16 01:59:31,783 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-16 01:59:31,785 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-16 01:59:31,785 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-16 01:59:31,785 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-16 01:59:31,793 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:59:31" (1/1) ... [2021-10-16 01:59:31,801 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:59:31" (1/1) ... [2021-10-16 01:59:31,854 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-16 01:59:31,855 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-16 01:59:31,856 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-16 01:59:31,856 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-16 01:59:31,863 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:59:31" (1/1) ... [2021-10-16 01:59:31,864 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:59:31" (1/1) ... [2021-10-16 01:59:31,866 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:59:31" (1/1) ... [2021-10-16 01:59:31,867 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:59:31" (1/1) ... [2021-10-16 01:59:31,873 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:59:31" (1/1) ... [2021-10-16 01:59:31,874 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:59:31" (1/1) ... [2021-10-16 01:59:31,876 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:59:31" (1/1) ... [2021-10-16 01:59:31,879 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-16 01:59:31,880 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-16 01:59:31,880 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-16 01:59:31,880 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-16 01:59:31,881 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:59:31" (1/1) ... [2021-10-16 01:59:31,888 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 01:59:31,901 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_075591a4-9a7b-4692-97fd-1ccb962a77bf/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 01:59:31,912 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_075591a4-9a7b-4692-97fd-1ccb962a77bf/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-16 01:59:31,939 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_075591a4-9a7b-4692-97fd-1ccb962a77bf/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-16 01:59:31,964 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-16 01:59:31,964 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-16 01:59:31,965 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-16 01:59:31,965 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-16 01:59:32,254 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-16 01:59:32,254 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-10-16 01:59:32,256 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 01:59:32 BoogieIcfgContainer [2021-10-16 01:59:32,256 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-16 01:59:32,258 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-16 01:59:32,258 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-16 01:59:32,262 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-16 01:59:32,262 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 01:59:31" (1/3) ... [2021-10-16 01:59:32,263 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77263c76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 01:59:32, skipping insertion in model container [2021-10-16 01:59:32,263 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:59:31" (2/3) ... [2021-10-16 01:59:32,264 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77263c76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 01:59:32, skipping insertion in model container [2021-10-16 01:59:32,264 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 01:59:32" (3/3) ... [2021-10-16 01:59:32,265 INFO L111 eAbstractionObserver]: Analyzing ICFG float-no-simp3.c [2021-10-16 01:59:32,272 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-16 01:59:32,272 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-16 01:59:32,327 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-16 01:59:32,335 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, mConcurrency=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 [2021-10-16 01:59:32,335 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-16 01:59:32,364 INFO L276 IsEmpty]: Start isEmpty. Operand has 8 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 7 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) [2021-10-16 01:59:32,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-16 01:59:32,369 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 01:59:32,369 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-16 01:59:32,370 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 01:59:32,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 01:59:32,376 INFO L82 PathProgramCache]: Analyzing trace with hash 925604, now seen corresponding path program 1 times [2021-10-16 01:59:32,406 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 01:59:32,406 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [887093609] [2021-10-16 01:59:32,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 01:59:32,408 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 01:59:32,408 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_075591a4-9a7b-4692-97fd-1ccb962a77bf/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 01:59:32,431 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_075591a4-9a7b-4692-97fd-1ccb962a77bf/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 01:59:32,443 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_075591a4-9a7b-4692-97fd-1ccb962a77bf/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-16 01:59:32,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 01:59:32,578 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-16 01:59:32,582 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 01:59:32,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 01:59:32,719 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 01:59:33,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 01:59:33,375 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 01:59:33,375 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [887093609] [2021-10-16 01:59:33,376 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [887093609] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 01:59:33,376 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 01:59:33,376 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-10-16 01:59:33,378 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654103324] [2021-10-16 01:59:33,383 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-16 01:59:33,383 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 01:59:33,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-16 01:59:33,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-16 01:59:33,398 INFO L87 Difference]: Start difference. First operand has 8 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 7 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) Second operand has 6 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 01:59:33,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 01:59:33,467 INFO L93 Difference]: Finished difference Result 11 states and 10 transitions. [2021-10-16 01:59:33,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-16 01:59:33,470 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2021-10-16 01:59:33,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 01:59:33,476 INFO L225 Difference]: With dead ends: 11 [2021-10-16 01:59:33,476 INFO L226 Difference]: Without dead ends: 0 [2021-10-16 01:59:33,479 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 545.6ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-16 01:59:33,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-16 01:59:33,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-16 01:59:33,498 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) [2021-10-16 01:59:33,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-16 01:59:33,500 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 4 [2021-10-16 01:59:33,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 01:59:33,500 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-16 01:59:33,501 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 01:59:33,501 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-16 01:59:33,501 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-16 01:59:33,504 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 01:59:33,519 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_075591a4-9a7b-4692-97fd-1ccb962a77bf/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-16 01:59:33,717 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_075591a4-9a7b-4692-97fd-1ccb962a77bf/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 01:59:33,719 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-16 01:59:33,721 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-16 01:59:33,722 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-16 01:59:33,722 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-16 01:59:33,723 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-16 01:59:33,723 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 10) no Hoare annotation was computed. [2021-10-16 01:59:33,723 INFO L857 garLoopResultBuilder]: For program point L10(line 10) no Hoare annotation was computed. [2021-10-16 01:59:33,723 INFO L857 garLoopResultBuilder]: For program point L10-1(line 10) no Hoare annotation was computed. [2021-10-16 01:59:33,723 INFO L857 garLoopResultBuilder]: For program point L5(lines 5 11) no Hoare annotation was computed. [2021-10-16 01:59:33,727 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-16 01:59:33,730 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 01:59:33 BoogieIcfgContainer [2021-10-16 01:59:33,730 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-16 01:59:33,731 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-16 01:59:33,731 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-16 01:59:33,731 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-16 01:59:33,732 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 01:59:32" (3/4) ... [2021-10-16 01:59:33,747 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-16 01:59:33,755 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2021-10-16 01:59:33,755 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-16 01:59:33,755 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-10-16 01:59:33,755 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-16 01:59:33,781 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_075591a4-9a7b-4692-97fd-1ccb962a77bf/bin/utaipan-mTDlp9Zugs/witness.graphml [2021-10-16 01:59:33,782 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-16 01:59:33,788 INFO L168 Benchmark]: Toolchain (without parser) took 2224.02 ms. Allocated memory is still 88.1 MB. Free memory was 53.9 MB in the beginning and 39.1 MB in the end (delta: 14.8 MB). Peak memory consumption was 16.9 MB. Max. memory is 16.1 GB. [2021-10-16 01:59:33,789 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 88.1 MB. Free memory was 70.4 MB in the beginning and 70.3 MB in the end (delta: 75.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 01:59:33,791 INFO L168 Benchmark]: CACSL2BoogieTranslator took 223.21 ms. Allocated memory is still 88.1 MB. Free memory was 53.7 MB in the beginning and 69.0 MB in the end (delta: -15.3 MB). Peak memory consumption was 12.5 MB. Max. memory is 16.1 GB. [2021-10-16 01:59:33,797 INFO L168 Benchmark]: Boogie Procedure Inliner took 70.17 ms. Allocated memory is still 88.1 MB. Free memory was 69.0 MB in the beginning and 73.0 MB in the end (delta: -4.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 01:59:33,798 INFO L168 Benchmark]: Boogie Preprocessor took 23.48 ms. Allocated memory is still 88.1 MB. Free memory was 73.0 MB in the beginning and 72.0 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 01:59:33,800 INFO L168 Benchmark]: RCFGBuilder took 376.74 ms. Allocated memory is still 88.1 MB. Free memory was 71.7 MB in the beginning and 62.2 MB in the end (delta: 9.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-16 01:59:33,800 INFO L168 Benchmark]: TraceAbstraction took 1472.36 ms. Allocated memory is still 88.1 MB. Free memory was 61.7 MB in the beginning and 41.3 MB in the end (delta: 20.4 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. [2021-10-16 01:59:33,802 INFO L168 Benchmark]: Witness Printer took 50.66 ms. Allocated memory is still 88.1 MB. Free memory was 41.3 MB in the beginning and 39.1 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 01:59:33,807 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 88.1 MB. Free memory was 70.4 MB in the beginning and 70.3 MB in the end (delta: 75.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 223.21 ms. Allocated memory is still 88.1 MB. Free memory was 53.7 MB in the beginning and 69.0 MB in the end (delta: -15.3 MB). Peak memory consumption was 12.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 70.17 ms. Allocated memory is still 88.1 MB. Free memory was 69.0 MB in the beginning and 73.0 MB in the end (delta: -4.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 23.48 ms. Allocated memory is still 88.1 MB. Free memory was 73.0 MB in the beginning and 72.0 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 376.74 ms. Allocated memory is still 88.1 MB. Free memory was 71.7 MB in the beginning and 62.2 MB in the end (delta: 9.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1472.36 ms. Allocated memory is still 88.1 MB. Free memory was 61.7 MB in the beginning and 41.3 MB in the end (delta: 20.4 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. * Witness Printer took 50.66 ms. Allocated memory is still 88.1 MB. Free memory was 41.3 MB in the beginning and 39.1 MB in the end (delta: 2.2 MB). 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, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 10]: 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, 8 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1402.3ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 23.6ms, AutomataDifference: 94.8ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 3.1ms, InitialAbstractionConstructionTime: 10.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 3 SDtfs, 14 SDslu, 1 SDs, 0 SdLazy, 2 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 38.1ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 545.6ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=8occurred in iteration=0, InterpolantAutomatonStates: 4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 7.7ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 0 LocationsWithAnnotation, 0 PreInvPairs, 0 NumberOfFragments, 0 HoareAnnotationTreeSize, 0 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0ms HoareSimplificationTime, 0 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 27.3ms SsaConstructionTime, 67.2ms SatisfiabilityAnalysisTime, 799.9ms InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 42 SizeOfPredicates, 3 NumberOfNonLiveVariables, 26 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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 RESULT: Ultimate proved your program to be correct! [2021-10-16 01:59:33,872 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_075591a4-9a7b-4692-97fd-1ccb962a77bf/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...