./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/square_2+soft_float_1-2a.c.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_453640cd-2d72-47d2-9a0b-20a06e91ee36/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_453640cd-2d72-47d2-9a0b-20a06e91ee36/bin/utaipan-TEXQjIfE4P/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_453640cd-2d72-47d2-9a0b-20a06e91ee36/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_453640cd-2d72-47d2-9a0b-20a06e91ee36/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/combinations/square_2+soft_float_1-2a.c.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_453640cd-2d72-47d2-9a0b-20a06e91ee36/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_453640cd-2d72-47d2-9a0b-20a06e91ee36/bin/utaipan-TEXQjIfE4P --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 635a1e60678a5560c2d4f471b1621e4874af8f81f11429fca537539223b8f1e6 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-21 01:11:06,910 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-21 01:11:06,914 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-21 01:11:06,963 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-21 01:11:06,964 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-21 01:11:06,966 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-21 01:11:06,968 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-21 01:11:06,971 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-21 01:11:06,974 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-21 01:11:06,976 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-21 01:11:06,977 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-21 01:11:06,979 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-21 01:11:06,980 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-21 01:11:06,982 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-21 01:11:06,984 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-21 01:11:06,986 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-21 01:11:06,987 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-21 01:11:06,988 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-21 01:11:06,991 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-21 01:11:06,995 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-21 01:11:07,000 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-21 01:11:07,011 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-21 01:11:07,013 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-21 01:11:07,016 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-21 01:11:07,021 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-21 01:11:07,034 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-21 01:11:07,035 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-21 01:11:07,036 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-21 01:11:07,037 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-21 01:11:07,038 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-21 01:11:07,039 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-21 01:11:07,040 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-21 01:11:07,044 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-21 01:11:07,045 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-21 01:11:07,047 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-21 01:11:07,047 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-21 01:11:07,048 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-21 01:11:07,048 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-21 01:11:07,048 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-21 01:11:07,049 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-21 01:11:07,050 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-21 01:11:07,051 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_453640cd-2d72-47d2-9a0b-20a06e91ee36/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-21 01:11:07,099 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-21 01:11:07,099 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-21 01:11:07,100 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-21 01:11:07,100 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-21 01:11:07,105 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-21 01:11:07,105 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-21 01:11:07,106 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-21 01:11:07,106 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-21 01:11:07,107 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-21 01:11:07,107 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-21 01:11:07,108 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-21 01:11:07,109 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-21 01:11:07,109 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-21 01:11:07,109 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-21 01:11:07,110 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-21 01:11:07,110 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-21 01:11:07,110 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-21 01:11:07,111 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-21 01:11:07,112 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-21 01:11:07,112 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-21 01:11:07,112 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-21 01:11:07,112 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-21 01:11:07,113 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-21 01:11:07,113 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-21 01:11:07,113 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-21 01:11:07,114 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-21 01:11:07,116 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-21 01:11:07,117 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-21 01:11:07,117 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-21 01:11:07,117 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-21 01:11:07,117 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-21 01:11:07,118 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-21 01:11:07,118 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:11:07,119 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-21 01:11:07,119 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-21 01:11:07,119 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-21 01:11:07,120 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-21 01:11:07,120 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-21 01:11:07,120 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-21 01:11:07,120 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-21 01:11:07,121 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-21 01:11:07,121 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_453640cd-2d72-47d2-9a0b-20a06e91ee36/bin/utaipan-TEXQjIfE4P/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_453640cd-2d72-47d2-9a0b-20a06e91ee36/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 635a1e60678a5560c2d4f471b1621e4874af8f81f11429fca537539223b8f1e6 [2021-11-21 01:11:07,471 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-21 01:11:07,500 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-21 01:11:07,504 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-21 01:11:07,505 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-21 01:11:07,510 INFO L275 PluginConnector]: CDTParser initialized [2021-11-21 01:11:07,511 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_453640cd-2d72-47d2-9a0b-20a06e91ee36/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/combinations/square_2+soft_float_1-2a.c.cil.c [2021-11-21 01:11:07,597 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_453640cd-2d72-47d2-9a0b-20a06e91ee36/bin/utaipan-TEXQjIfE4P/data/beae3785d/13c35d016fb843b9aad36d35599e42db/FLAG165c98def [2021-11-21 01:11:08,151 INFO L306 CDTParser]: Found 1 translation units. [2021-11-21 01:11:08,152 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_453640cd-2d72-47d2-9a0b-20a06e91ee36/sv-benchmarks/c/combinations/square_2+soft_float_1-2a.c.cil.c [2021-11-21 01:11:08,163 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_453640cd-2d72-47d2-9a0b-20a06e91ee36/bin/utaipan-TEXQjIfE4P/data/beae3785d/13c35d016fb843b9aad36d35599e42db/FLAG165c98def [2021-11-21 01:11:08,467 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_453640cd-2d72-47d2-9a0b-20a06e91ee36/bin/utaipan-TEXQjIfE4P/data/beae3785d/13c35d016fb843b9aad36d35599e42db [2021-11-21 01:11:08,470 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-21 01:11:08,473 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-21 01:11:08,479 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-21 01:11:08,479 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-21 01:11:08,483 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-21 01:11:08,484 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:11:08" (1/1) ... [2021-11-21 01:11:08,485 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a95ef72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:11:08, skipping insertion in model container [2021-11-21 01:11:08,486 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:11:08" (1/1) ... [2021-11-21 01:11:08,495 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-21 01:11:08,546 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-21 01:11:08,791 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_453640cd-2d72-47d2-9a0b-20a06e91ee36/sv-benchmarks/c/combinations/square_2+soft_float_1-2a.c.cil.c[1997,2010] [2021-11-21 01:11:08,796 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_453640cd-2d72-47d2-9a0b-20a06e91ee36/sv-benchmarks/c/combinations/square_2+soft_float_1-2a.c.cil.c[2391,2404] [2021-11-21 01:11:08,881 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:11:08,900 INFO L203 MainTranslator]: Completed pre-run [2021-11-21 01:11:08,933 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_453640cd-2d72-47d2-9a0b-20a06e91ee36/sv-benchmarks/c/combinations/square_2+soft_float_1-2a.c.cil.c[1997,2010] [2021-11-21 01:11:08,939 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_453640cd-2d72-47d2-9a0b-20a06e91ee36/sv-benchmarks/c/combinations/square_2+soft_float_1-2a.c.cil.c[2391,2404] [2021-11-21 01:11:09,000 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:11:09,022 INFO L208 MainTranslator]: Completed translation [2021-11-21 01:11:09,023 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:11:09 WrapperNode [2021-11-21 01:11:09,024 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-21 01:11:09,026 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-21 01:11:09,026 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-21 01:11:09,026 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-21 01:11:09,035 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:11:09" (1/1) ... [2021-11-21 01:11:09,059 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:11:09" (1/1) ... [2021-11-21 01:11:09,107 INFO L137 Inliner]: procedures = 27, calls = 20, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 169 [2021-11-21 01:11:09,108 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-21 01:11:09,109 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-21 01:11:09,109 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-21 01:11:09,110 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-21 01:11:09,121 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:11:09" (1/1) ... [2021-11-21 01:11:09,122 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:11:09" (1/1) ... [2021-11-21 01:11:09,142 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:11:09" (1/1) ... [2021-11-21 01:11:09,143 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:11:09" (1/1) ... [2021-11-21 01:11:09,150 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:11:09" (1/1) ... [2021-11-21 01:11:09,171 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:11:09" (1/1) ... [2021-11-21 01:11:09,173 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:11:09" (1/1) ... [2021-11-21 01:11:09,176 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-21 01:11:09,177 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-21 01:11:09,187 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-21 01:11:09,188 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-21 01:11:09,189 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:11:09" (1/1) ... [2021-11-21 01:11:09,204 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:11:09,220 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_453640cd-2d72-47d2-9a0b-20a06e91ee36/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:11:09,240 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_453640cd-2d72-47d2-9a0b-20a06e91ee36/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-21 01:11:09,254 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_453640cd-2d72-47d2-9a0b-20a06e91ee36/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-21 01:11:09,298 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-21 01:11:09,299 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2021-11-21 01:11:09,299 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2021-11-21 01:11:09,299 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-21 01:11:09,299 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-21 01:11:09,299 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-21 01:11:09,300 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-21 01:11:09,300 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-21 01:11:09,383 INFO L236 CfgBuilder]: Building ICFG [2021-11-21 01:11:09,385 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-21 01:11:09,816 INFO L277 CfgBuilder]: Performing block encoding [2021-11-21 01:11:09,978 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-21 01:11:09,978 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-21 01:11:09,982 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:11:09 BoogieIcfgContainer [2021-11-21 01:11:09,982 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-21 01:11:09,985 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-21 01:11:09,986 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-21 01:11:09,993 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-21 01:11:09,994 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 01:11:08" (1/3) ... [2021-11-21 01:11:09,995 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18738e40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:11:09, skipping insertion in model container [2021-11-21 01:11:09,995 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:11:09" (2/3) ... [2021-11-21 01:11:09,996 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18738e40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:11:09, skipping insertion in model container [2021-11-21 01:11:09,996 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:11:09" (3/3) ... [2021-11-21 01:11:10,003 INFO L111 eAbstractionObserver]: Analyzing ICFG square_2+soft_float_1-2a.c.cil.c [2021-11-21 01:11:10,009 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-21 01:11:10,009 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-21 01:11:10,083 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-21 01:11:10,098 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-21 01:11:10,098 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-21 01:11:10,125 INFO L276 IsEmpty]: Start isEmpty. Operand has 51 states, 38 states have (on average 1.5526315789473684) internal successors, (59), 42 states have internal predecessors, (59), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-21 01:11:10,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-11-21 01:11:10,130 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:11:10,131 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-11-21 01:11:10,132 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:11:10,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:11:10,137 INFO L85 PathProgramCache]: Analyzing trace with hash 9849864, now seen corresponding path program 1 times [2021-11-21 01:11:10,147 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:11:10,148 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034796638] [2021-11-21 01:11:10,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:11:10,149 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:11:10,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-21 01:11:10,268 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-21 01:11:10,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-21 01:11:10,333 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-21 01:11:10,335 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-21 01:11:10,337 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2021-11-21 01:11:10,340 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2021-11-21 01:11:10,341 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-21 01:11:10,346 INFO L732 BasicCegarLoop]: Path program histogram: [1] [2021-11-21 01:11:10,367 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-21 01:11:10,398 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.11 01:11:10 BoogieIcfgContainer [2021-11-21 01:11:10,398 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-21 01:11:10,402 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-21 01:11:10,403 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-21 01:11:10,403 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-21 01:11:10,404 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:11:09" (3/4) ... [2021-11-21 01:11:10,407 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-21 01:11:10,408 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-21 01:11:10,411 INFO L158 Benchmark]: Toolchain (without parser) took 1937.34ms. Allocated memory was 102.8MB in the beginning and 136.3MB in the end (delta: 33.6MB). Free memory was 63.3MB in the beginning and 110.1MB in the end (delta: -46.7MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-21 01:11:10,412 INFO L158 Benchmark]: CDTParser took 0.35ms. Allocated memory is still 102.8MB. Free memory is still 80.6MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-21 01:11:10,413 INFO L158 Benchmark]: CACSL2BoogieTranslator took 546.22ms. Allocated memory is still 102.8MB. Free memory was 63.2MB in the beginning and 73.7MB in the end (delta: -10.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-21 01:11:10,415 INFO L158 Benchmark]: Boogie Procedure Inliner took 82.20ms. Allocated memory is still 102.8MB. Free memory was 73.7MB in the beginning and 71.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-21 01:11:10,422 INFO L158 Benchmark]: Boogie Preprocessor took 66.82ms. Allocated memory is still 102.8MB. Free memory was 71.7MB in the beginning and 70.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-21 01:11:10,424 INFO L158 Benchmark]: RCFGBuilder took 805.22ms. Allocated memory is still 102.8MB. Free memory was 70.1MB in the beginning and 47.7MB in the end (delta: 22.4MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2021-11-21 01:11:10,425 INFO L158 Benchmark]: TraceAbstraction took 413.42ms. Allocated memory was 102.8MB in the beginning and 136.3MB in the end (delta: 33.6MB). Free memory was 47.4MB in the beginning and 111.0MB in the end (delta: -63.6MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-21 01:11:10,425 INFO L158 Benchmark]: Witness Printer took 6.86ms. Allocated memory is still 136.3MB. Free memory was 111.0MB in the beginning and 110.1MB in the end (delta: 950.9kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-21 01:11:10,436 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35ms. Allocated memory is still 102.8MB. Free memory is still 80.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 546.22ms. Allocated memory is still 102.8MB. Free memory was 63.2MB in the beginning and 73.7MB in the end (delta: -10.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 82.20ms. Allocated memory is still 102.8MB. Free memory was 73.7MB in the beginning and 71.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 66.82ms. Allocated memory is still 102.8MB. Free memory was 71.7MB in the beginning and 70.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 805.22ms. Allocated memory is still 102.8MB. Free memory was 70.1MB in the beginning and 47.7MB in the end (delta: 22.4MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * TraceAbstraction took 413.42ms. Allocated memory was 102.8MB in the beginning and 136.3MB in the end (delta: 33.6MB). Free memory was 47.4MB in the beginning and 111.0MB in the end (delta: -63.6MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 6.86ms. Allocated memory is still 136.3MB. Free memory was 111.0MB in the beginning and 110.1MB in the end (delta: 950.9kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 48]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 47, overapproximation of someBinaryArithmeticFLOAToperation at line 45. Possible FailurePath: [L403] COND TRUE __VERIFIER_nondet_int() [L404] CALL main1() [L39] float IN = __VERIFIER_nondet_float(); [L40] CALL assume_abort_if_not(IN >= 0.0f && IN < 1.0f) [L34] COND FALSE !(!cond) [L40] RET assume_abort_if_not(IN >= 0.0f && IN < 1.0f) [L42] float x = IN; [L44-L45] float result = 1.0f + 0.5f*x - 0.125f*x*x + 0.0625f*x*x*x - 0.0390625f*x*x*x*x; VAL [IN=49, x=49] [L47] COND TRUE !(result >= 0.0f && result < 1.398f) VAL [IN=49, x=49] [L48] reach_error() VAL [IN=49, x=49] - UnprovableResult [Line: 61]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 51 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.3s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=51occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-11-21 01:11:10,502 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_453640cd-2d72-47d2-9a0b-20a06e91ee36/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_453640cd-2d72-47d2-9a0b-20a06e91ee36/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_453640cd-2d72-47d2-9a0b-20a06e91ee36/bin/utaipan-TEXQjIfE4P/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_453640cd-2d72-47d2-9a0b-20a06e91ee36/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_453640cd-2d72-47d2-9a0b-20a06e91ee36/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/combinations/square_2+soft_float_1-2a.c.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_453640cd-2d72-47d2-9a0b-20a06e91ee36/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_453640cd-2d72-47d2-9a0b-20a06e91ee36/bin/utaipan-TEXQjIfE4P --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 635a1e60678a5560c2d4f471b1621e4874af8f81f11429fca537539223b8f1e6 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-21 01:11:13,274 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-21 01:11:13,278 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-21 01:11:13,344 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-21 01:11:13,345 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-21 01:11:13,350 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-21 01:11:13,352 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-21 01:11:13,357 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-21 01:11:13,361 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-21 01:11:13,371 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-21 01:11:13,373 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-21 01:11:13,375 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-21 01:11:13,376 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-21 01:11:13,379 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-21 01:11:13,381 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-21 01:11:13,387 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-21 01:11:13,389 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-21 01:11:13,390 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-21 01:11:13,393 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-21 01:11:13,403 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-21 01:11:13,405 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-21 01:11:13,407 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-21 01:11:13,410 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-21 01:11:13,413 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-21 01:11:13,424 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-21 01:11:13,424 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-21 01:11:13,425 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-21 01:11:13,427 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-21 01:11:13,428 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-21 01:11:13,429 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-21 01:11:13,430 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-21 01:11:13,431 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-21 01:11:13,434 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-21 01:11:13,435 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-21 01:11:13,437 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-21 01:11:13,437 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-21 01:11:13,438 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-21 01:11:13,439 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-21 01:11:13,439 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-21 01:11:13,441 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-21 01:11:13,442 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-21 01:11:13,443 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_453640cd-2d72-47d2-9a0b-20a06e91ee36/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-21 01:11:13,496 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-21 01:11:13,496 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-21 01:11:13,497 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-21 01:11:13,497 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-21 01:11:13,499 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-21 01:11:13,499 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-21 01:11:13,500 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-21 01:11:13,500 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-21 01:11:13,500 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-21 01:11:13,501 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-21 01:11:13,502 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-21 01:11:13,502 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-21 01:11:13,504 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-21 01:11:13,504 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-21 01:11:13,505 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-21 01:11:13,505 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-21 01:11:13,505 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-21 01:11:13,505 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-21 01:11:13,506 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-21 01:11:13,506 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-21 01:11:13,506 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-21 01:11:13,507 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-21 01:11:13,507 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-21 01:11:13,507 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-21 01:11:13,507 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-21 01:11:13,508 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-21 01:11:13,508 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-21 01:11:13,508 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-21 01:11:13,509 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:11:13,509 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-21 01:11:13,509 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-21 01:11:13,509 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-21 01:11:13,510 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-21 01:11:13,511 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-21 01:11:13,511 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-21 01:11:13,511 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-21 01:11:13,511 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-21 01:11:13,512 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_453640cd-2d72-47d2-9a0b-20a06e91ee36/bin/utaipan-TEXQjIfE4P/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_453640cd-2d72-47d2-9a0b-20a06e91ee36/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 635a1e60678a5560c2d4f471b1621e4874af8f81f11429fca537539223b8f1e6 [2021-11-21 01:11:14,006 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-21 01:11:14,033 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-21 01:11:14,037 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-21 01:11:14,038 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-21 01:11:14,039 INFO L275 PluginConnector]: CDTParser initialized [2021-11-21 01:11:14,040 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_453640cd-2d72-47d2-9a0b-20a06e91ee36/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/combinations/square_2+soft_float_1-2a.c.cil.c [2021-11-21 01:11:14,124 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_453640cd-2d72-47d2-9a0b-20a06e91ee36/bin/utaipan-TEXQjIfE4P/data/910016952/f50f700a68844d9c9f72790608e1494c/FLAG5d2cdc819 [2021-11-21 01:11:14,739 INFO L306 CDTParser]: Found 1 translation units. [2021-11-21 01:11:14,740 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_453640cd-2d72-47d2-9a0b-20a06e91ee36/sv-benchmarks/c/combinations/square_2+soft_float_1-2a.c.cil.c [2021-11-21 01:11:14,753 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_453640cd-2d72-47d2-9a0b-20a06e91ee36/bin/utaipan-TEXQjIfE4P/data/910016952/f50f700a68844d9c9f72790608e1494c/FLAG5d2cdc819 [2021-11-21 01:11:15,131 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_453640cd-2d72-47d2-9a0b-20a06e91ee36/bin/utaipan-TEXQjIfE4P/data/910016952/f50f700a68844d9c9f72790608e1494c [2021-11-21 01:11:15,134 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-21 01:11:15,136 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-21 01:11:15,138 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-21 01:11:15,138 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-21 01:11:15,158 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-21 01:11:15,159 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:11:15" (1/1) ... [2021-11-21 01:11:15,160 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6856b9ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:11:15, skipping insertion in model container [2021-11-21 01:11:15,161 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:11:15" (1/1) ... [2021-11-21 01:11:15,169 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-21 01:11:15,205 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-21 01:11:15,430 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_453640cd-2d72-47d2-9a0b-20a06e91ee36/sv-benchmarks/c/combinations/square_2+soft_float_1-2a.c.cil.c[1997,2010] [2021-11-21 01:11:15,436 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_453640cd-2d72-47d2-9a0b-20a06e91ee36/sv-benchmarks/c/combinations/square_2+soft_float_1-2a.c.cil.c[2391,2404] [2021-11-21 01:11:15,503 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:11:15,516 INFO L203 MainTranslator]: Completed pre-run [2021-11-21 01:11:15,538 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_453640cd-2d72-47d2-9a0b-20a06e91ee36/sv-benchmarks/c/combinations/square_2+soft_float_1-2a.c.cil.c[1997,2010] [2021-11-21 01:11:15,540 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_453640cd-2d72-47d2-9a0b-20a06e91ee36/sv-benchmarks/c/combinations/square_2+soft_float_1-2a.c.cil.c[2391,2404] [2021-11-21 01:11:15,581 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:11:15,598 INFO L208 MainTranslator]: Completed translation [2021-11-21 01:11:15,599 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:11:15 WrapperNode [2021-11-21 01:11:15,599 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-21 01:11:15,600 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-21 01:11:15,601 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-21 01:11:15,601 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-21 01:11:15,621 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:11:15" (1/1) ... [2021-11-21 01:11:15,649 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:11:15" (1/1) ... [2021-11-21 01:11:15,697 INFO L137 Inliner]: procedures = 28, calls = 20, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 165 [2021-11-21 01:11:15,698 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-21 01:11:15,699 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-21 01:11:15,700 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-21 01:11:15,700 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-21 01:11:15,710 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:11:15" (1/1) ... [2021-11-21 01:11:15,710 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:11:15" (1/1) ... [2021-11-21 01:11:15,727 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:11:15" (1/1) ... [2021-11-21 01:11:15,727 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:11:15" (1/1) ... [2021-11-21 01:11:15,739 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:11:15" (1/1) ... [2021-11-21 01:11:15,745 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:11:15" (1/1) ... [2021-11-21 01:11:15,749 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:11:15" (1/1) ... [2021-11-21 01:11:15,755 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-21 01:11:15,756 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-21 01:11:15,756 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-21 01:11:15,756 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-21 01:11:15,757 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:11:15" (1/1) ... [2021-11-21 01:11:15,766 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:11:15,780 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_453640cd-2d72-47d2-9a0b-20a06e91ee36/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:11:15,794 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_453640cd-2d72-47d2-9a0b-20a06e91ee36/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-21 01:11:15,814 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_453640cd-2d72-47d2-9a0b-20a06e91ee36/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-21 01:11:15,854 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-21 01:11:15,855 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-21 01:11:15,855 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2021-11-21 01:11:15,855 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2021-11-21 01:11:15,855 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-21 01:11:15,855 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-21 01:11:15,856 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-21 01:11:15,856 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-21 01:11:15,990 INFO L236 CfgBuilder]: Building ICFG [2021-11-21 01:11:15,993 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-21 01:11:18,745 INFO L277 CfgBuilder]: Performing block encoding [2021-11-21 01:11:18,755 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-21 01:11:18,760 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-21 01:11:18,763 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:11:18 BoogieIcfgContainer [2021-11-21 01:11:18,766 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-21 01:11:18,768 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-21 01:11:18,772 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-21 01:11:18,775 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-21 01:11:18,776 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 01:11:15" (1/3) ... [2021-11-21 01:11:18,777 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b28915 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:11:18, skipping insertion in model container [2021-11-21 01:11:18,777 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:11:15" (2/3) ... [2021-11-21 01:11:18,778 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b28915 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:11:18, skipping insertion in model container [2021-11-21 01:11:18,778 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:11:18" (3/3) ... [2021-11-21 01:11:18,784 INFO L111 eAbstractionObserver]: Analyzing ICFG square_2+soft_float_1-2a.c.cil.c [2021-11-21 01:11:18,794 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-21 01:11:18,794 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-21 01:11:18,854 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-21 01:11:18,863 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-21 01:11:18,863 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-21 01:11:18,885 INFO L276 IsEmpty]: Start isEmpty. Operand has 81 states, 68 states have (on average 1.588235294117647) internal successors, (108), 72 states have internal predecessors, (108), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-21 01:11:18,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-21 01:11:18,891 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:11:18,892 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:11:18,893 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:11:18,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:11:18,910 INFO L85 PathProgramCache]: Analyzing trace with hash -548115930, now seen corresponding path program 1 times [2021-11-21 01:11:18,926 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:11:18,928 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1954993957] [2021-11-21 01:11:18,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:11:18,929 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:11:18,930 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_453640cd-2d72-47d2-9a0b-20a06e91ee36/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:11:18,934 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_453640cd-2d72-47d2-9a0b-20a06e91ee36/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:11:18,970 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_453640cd-2d72-47d2-9a0b-20a06e91ee36/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-21 01:11:19,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:11:19,617 INFO L263 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-21 01:11:19,620 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:11:19,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:11:19,681 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:11:19,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:11:19,713 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:11:19,713 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1954993957] [2021-11-21 01:11:19,714 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1954993957] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 01:11:19,715 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:11:19,715 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-21 01:11:19,717 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041876083] [2021-11-21 01:11:19,718 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 01:11:19,723 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-21 01:11:19,723 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:11:19,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-21 01:11:19,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-21 01:11:19,759 INFO L87 Difference]: Start difference. First operand has 81 states, 68 states have (on average 1.588235294117647) internal successors, (108), 72 states have internal predecessors, (108), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:11:19,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:11:19,817 INFO L93 Difference]: Finished difference Result 157 states and 248 transitions. [2021-11-21 01:11:19,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-21 01:11:19,819 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-11-21 01:11:19,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:11:19,830 INFO L225 Difference]: With dead ends: 157 [2021-11-21 01:11:19,831 INFO L226 Difference]: Without dead ends: 74 [2021-11-21 01:11:19,836 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-21 01:11:19,843 INFO L933 BasicCegarLoop]: 116 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-21 01:11:19,845 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-21 01:11:19,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2021-11-21 01:11:19,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2021-11-21 01:11:19,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 62 states have (on average 1.4838709677419355) internal successors, (92), 65 states have internal predecessors, (92), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-11-21 01:11:19,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 107 transitions. [2021-11-21 01:11:19,915 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 107 transitions. Word has length 7 [2021-11-21 01:11:19,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:11:19,916 INFO L470 AbstractCegarLoop]: Abstraction has 74 states and 107 transitions. [2021-11-21 01:11:19,918 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:11:19,918 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 107 transitions. [2021-11-21 01:11:19,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-21 01:11:19,919 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:11:19,919 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:11:19,951 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_453640cd-2d72-47d2-9a0b-20a06e91ee36/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-21 01:11:20,138 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_453640cd-2d72-47d2-9a0b-20a06e91ee36/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 01:11:20,139 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:11:20,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:11:20,140 INFO L85 PathProgramCache]: Analyzing trace with hash -548056348, now seen corresponding path program 1 times [2021-11-21 01:11:20,141 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:11:20,141 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1582082391] [2021-11-21 01:11:20,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:11:20,142 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:11:20,142 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_453640cd-2d72-47d2-9a0b-20a06e91ee36/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:11:20,144 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_453640cd-2d72-47d2-9a0b-20a06e91ee36/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:11:20,158 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_453640cd-2d72-47d2-9a0b-20a06e91ee36/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-21 01:11:57,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-21 01:11:57,057 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-21 01:13:39,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-21 01:13:40,006 INFO L133 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2021-11-21 01:13:40,006 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-21 01:13:40,009 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2021-11-21 01:13:40,011 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2021-11-21 01:13:40,053 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_453640cd-2d72-47d2-9a0b-20a06e91ee36/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-11-21 01:13:40,212 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_453640cd-2d72-47d2-9a0b-20a06e91ee36/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 01:13:40,217 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2021-11-21 01:13:40,220 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-21 01:13:40,246 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.11 01:13:40 BoogieIcfgContainer [2021-11-21 01:13:40,246 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-21 01:13:40,247 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-21 01:13:40,247 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-21 01:13:40,247 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-21 01:13:40,248 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:11:18" (3/4) ... [2021-11-21 01:13:40,250 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-11-21 01:13:40,311 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_453640cd-2d72-47d2-9a0b-20a06e91ee36/bin/utaipan-TEXQjIfE4P/witness.graphml [2021-11-21 01:13:40,311 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-21 01:13:40,312 INFO L158 Benchmark]: Toolchain (without parser) took 145176.07ms. Allocated memory is still 77.6MB. Free memory was 42.7MB in the beginning and 57.9MB in the end (delta: -15.1MB). Peak memory consumption was 18.4MB. Max. memory is 16.1GB. [2021-11-21 01:13:40,313 INFO L158 Benchmark]: CDTParser took 0.24ms. Allocated memory is still 77.6MB. Free memory was 60.3MB in the beginning and 60.2MB in the end (delta: 69.2kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-21 01:13:40,313 INFO L158 Benchmark]: CACSL2BoogieTranslator took 461.68ms. Allocated memory is still 77.6MB. Free memory was 42.5MB in the beginning and 50.5MB in the end (delta: -8.0MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-11-21 01:13:40,314 INFO L158 Benchmark]: Boogie Procedure Inliner took 98.19ms. Allocated memory is still 77.6MB. Free memory was 50.3MB in the beginning and 48.4MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-21 01:13:40,315 INFO L158 Benchmark]: Boogie Preprocessor took 55.59ms. Allocated memory is still 77.6MB. Free memory was 48.4MB in the beginning and 46.6MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-21 01:13:40,315 INFO L158 Benchmark]: RCFGBuilder took 3010.12ms. Allocated memory is still 77.6MB. Free memory was 46.5MB in the beginning and 58.0MB in the end (delta: -11.4MB). Peak memory consumption was 19.4MB. Max. memory is 16.1GB. [2021-11-21 01:13:40,316 INFO L158 Benchmark]: TraceAbstraction took 141477.99ms. Allocated memory is still 77.6MB. Free memory was 57.3MB in the beginning and 31.4MB in the end (delta: 25.9MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2021-11-21 01:13:40,317 INFO L158 Benchmark]: Witness Printer took 64.10ms. Allocated memory is still 77.6MB. Free memory was 31.4MB in the beginning and 57.9MB in the end (delta: -26.4MB). Peak memory consumption was 5.3MB. Max. memory is 16.1GB. [2021-11-21 01:13:40,320 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24ms. Allocated memory is still 77.6MB. Free memory was 60.3MB in the beginning and 60.2MB in the end (delta: 69.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 461.68ms. Allocated memory is still 77.6MB. Free memory was 42.5MB in the beginning and 50.5MB in the end (delta: -8.0MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 98.19ms. Allocated memory is still 77.6MB. Free memory was 50.3MB in the beginning and 48.4MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 55.59ms. Allocated memory is still 77.6MB. Free memory was 48.4MB in the beginning and 46.6MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 3010.12ms. Allocated memory is still 77.6MB. Free memory was 46.5MB in the beginning and 58.0MB in the end (delta: -11.4MB). Peak memory consumption was 19.4MB. Max. memory is 16.1GB. * TraceAbstraction took 141477.99ms. Allocated memory is still 77.6MB. Free memory was 57.3MB in the beginning and 31.4MB in the end (delta: 25.9MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Witness Printer took 64.10ms. Allocated memory is still 77.6MB. Free memory was 31.4MB in the beginning and 57.9MB in the end (delta: -26.4MB). Peak memory consumption was 5.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 48]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L403] COND TRUE __VERIFIER_nondet_int() [L404] CALL main1() [L39] float IN = __VERIFIER_nondet_float(); [L40] CALL assume_abort_if_not(IN >= 0.0f && IN < 1.0f) [L34] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L40] RET assume_abort_if_not(IN >= 0.0f && IN < 1.0f) [L42] float x = IN; [L44-L45] float result = 1.0f + 0.5f*x - 0.125f*x*x + 0.0625f*x*x*x - 0.0390625f*x*x*x*x; VAL [IN=0.9999998807907104, result=1.3984375, x=0.9999998807907104] [L47] COND TRUE !(result >= 0.0f && result < 1.398f) VAL [IN=0.9999998807907104, result=1.3984375, x=0.9999998807907104] [L48] reach_error() VAL [IN=0.9999998807907104, result=1.3984375, x=0.9999998807907104] - UnprovableResult [Line: 61]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 81 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 141.4s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 116 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 0 IncrementalHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 116 mSDtfsCounter, 0 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=81occurred 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, 37.4s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 14 NumberOfCodeBlocks, 14 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 12 ConstructedInterpolants, 0 QuantifiedInterpolants, 12 SizeOfPredicates, 0 NumberOfNonLiveVariables, 22 ConjunctsInSsa, 1 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 RESULT: Ultimate proved your program to be incorrect! [2021-11-21 01:13:40,401 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_453640cd-2d72-47d2-9a0b-20a06e91ee36/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE