./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-benchs/float_int_inv_square.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71239e62-e350-4348-8a44-8b9a2098b9ce/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71239e62-e350-4348-8a44-8b9a2098b9ce/bin/utaipan-I9t0OCRTmS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71239e62-e350-4348-8a44-8b9a2098b9ce/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71239e62-e350-4348-8a44-8b9a2098b9ce/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/float_int_inv_square.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71239e62-e350-4348-8a44-8b9a2098b9ce/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71239e62-e350-4348-8a44-8b9a2098b9ce/bin/utaipan-I9t0OCRTmS --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 a3f1488b0e5756e8d9e219e50ec38e84e8e4fac76b2e3a5e1785d4e14d4111d8 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-19 08:15:52,697 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 08:15:52,699 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 08:15:52,719 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 08:15:52,720 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 08:15:52,721 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 08:15:52,722 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 08:15:52,724 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 08:15:52,726 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 08:15:52,727 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 08:15:52,728 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 08:15:52,729 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 08:15:52,730 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 08:15:52,731 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 08:15:52,732 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 08:15:52,733 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 08:15:52,736 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 08:15:52,737 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 08:15:52,739 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 08:15:52,741 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 08:15:52,743 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 08:15:52,748 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 08:15:52,750 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 08:15:52,751 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 08:15:52,755 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 08:15:52,755 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 08:15:52,756 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 08:15:52,757 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 08:15:52,757 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 08:15:52,767 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 08:15:52,768 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 08:15:52,770 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 08:15:52,772 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 08:15:52,774 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 08:15:52,777 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 08:15:52,777 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 08:15:52,778 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 08:15:52,778 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 08:15:52,779 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 08:15:52,779 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 08:15:52,780 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 08:15:52,781 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71239e62-e350-4348-8a44-8b9a2098b9ce/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-19 08:15:52,836 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 08:15:52,836 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 08:15:52,837 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 08:15:52,837 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 08:15:52,837 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 08:15:52,838 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 08:15:52,838 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 08:15:52,838 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 08:15:52,838 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 08:15:52,838 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 08:15:52,839 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 08:15:52,839 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 08:15:52,839 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 08:15:52,839 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 08:15:52,839 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 08:15:52,840 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 08:15:52,840 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 08:15:52,840 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 08:15:52,841 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 08:15:52,841 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-19 08:15:52,841 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 08:15:52,841 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-19 08:15:52,841 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 08:15:52,842 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 08:15:52,842 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 08:15:52,845 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 08:15:52,846 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-19 08:15:52,846 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 08:15:52,847 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 08:15:52,847 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 08:15:52,847 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 08:15:52,847 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 08:15:52,848 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 08:15:52,848 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 08:15:52,848 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 08:15:52,848 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 08:15:52,849 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 08:15:52,850 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 08:15:52,850 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 08:15:52,850 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 08:15:52,850 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 08:15:52,851 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_71239e62-e350-4348-8a44-8b9a2098b9ce/bin/utaipan-I9t0OCRTmS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71239e62-e350-4348-8a44-8b9a2098b9ce/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a3f1488b0e5756e8d9e219e50ec38e84e8e4fac76b2e3a5e1785d4e14d4111d8 [2022-11-19 08:15:53,107 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 08:15:53,130 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 08:15:53,132 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 08:15:53,134 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 08:15:53,135 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 08:15:53,136 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71239e62-e350-4348-8a44-8b9a2098b9ce/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/float-benchs/float_int_inv_square.c [2022-11-19 08:15:53,213 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71239e62-e350-4348-8a44-8b9a2098b9ce/bin/utaipan-I9t0OCRTmS/data/1268bdfa7/03f6b88d3b504c4b9c0efe970cbf1a16/FLAGbb31b87bf [2022-11-19 08:15:53,655 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 08:15:53,655 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71239e62-e350-4348-8a44-8b9a2098b9ce/sv-benchmarks/c/float-benchs/float_int_inv_square.c [2022-11-19 08:15:53,662 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71239e62-e350-4348-8a44-8b9a2098b9ce/bin/utaipan-I9t0OCRTmS/data/1268bdfa7/03f6b88d3b504c4b9c0efe970cbf1a16/FLAGbb31b87bf [2022-11-19 08:15:54,165 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71239e62-e350-4348-8a44-8b9a2098b9ce/bin/utaipan-I9t0OCRTmS/data/1268bdfa7/03f6b88d3b504c4b9c0efe970cbf1a16 [2022-11-19 08:15:54,167 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 08:15:54,169 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 08:15:54,171 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 08:15:54,171 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 08:15:54,175 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 08:15:54,176 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:15:54" (1/1) ... [2022-11-19 08:15:54,177 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69c5893b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:15:54, skipping insertion in model container [2022-11-19 08:15:54,177 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:15:54" (1/1) ... [2022-11-19 08:15:54,188 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 08:15:54,200 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 08:15:54,403 WARN L234 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_71239e62-e350-4348-8a44-8b9a2098b9ce/sv-benchmarks/c/float-benchs/float_int_inv_square.c[488,501] [2022-11-19 08:15:54,419 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 08:15:54,433 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 08:15:54,448 WARN L234 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_71239e62-e350-4348-8a44-8b9a2098b9ce/sv-benchmarks/c/float-benchs/float_int_inv_square.c[488,501] [2022-11-19 08:15:54,452 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 08:15:54,470 INFO L208 MainTranslator]: Completed translation [2022-11-19 08:15:54,470 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:15:54 WrapperNode [2022-11-19 08:15:54,471 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 08:15:54,472 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 08:15:54,472 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 08:15:54,473 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 08:15:54,481 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:15:54" (1/1) ... [2022-11-19 08:15:54,489 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:15:54" (1/1) ... [2022-11-19 08:15:54,508 INFO L138 Inliner]: procedures = 14, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 31 [2022-11-19 08:15:54,509 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 08:15:54,510 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 08:15:54,510 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 08:15:54,510 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 08:15:54,519 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:15:54" (1/1) ... [2022-11-19 08:15:54,519 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:15:54" (1/1) ... [2022-11-19 08:15:54,522 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:15:54" (1/1) ... [2022-11-19 08:15:54,523 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:15:54" (1/1) ... [2022-11-19 08:15:54,528 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:15:54" (1/1) ... [2022-11-19 08:15:54,531 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:15:54" (1/1) ... [2022-11-19 08:15:54,538 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:15:54" (1/1) ... [2022-11-19 08:15:54,539 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:15:54" (1/1) ... [2022-11-19 08:15:54,541 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 08:15:54,543 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 08:15:54,543 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 08:15:54,543 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 08:15:54,544 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:15:54" (1/1) ... [2022-11-19 08:15:54,551 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 08:15:54,562 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71239e62-e350-4348-8a44-8b9a2098b9ce/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:15:54,581 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71239e62-e350-4348-8a44-8b9a2098b9ce/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 08:15:54,609 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71239e62-e350-4348-8a44-8b9a2098b9ce/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 08:15:54,628 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 08:15:54,628 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-19 08:15:54,628 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 08:15:54,629 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 08:15:54,709 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 08:15:54,711 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 08:15:54,798 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 08:15:54,838 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 08:15:54,839 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-19 08:15:54,841 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:15:54 BoogieIcfgContainer [2022-11-19 08:15:54,841 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 08:15:54,844 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 08:15:54,844 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 08:15:54,848 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 08:15:54,848 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 08:15:54" (1/3) ... [2022-11-19 08:15:54,849 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a7c3376 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:15:54, skipping insertion in model container [2022-11-19 08:15:54,849 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:15:54" (2/3) ... [2022-11-19 08:15:54,850 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a7c3376 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:15:54, skipping insertion in model container [2022-11-19 08:15:54,850 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:15:54" (3/3) ... [2022-11-19 08:15:54,851 INFO L112 eAbstractionObserver]: Analyzing ICFG float_int_inv_square.c [2022-11-19 08:15:54,872 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 08:15:54,872 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-19 08:15:54,944 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 08:15:54,952 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@2beb5cd5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 08:15:54,952 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-19 08:15:54,957 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) [2022-11-19 08:15:54,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-19 08:15:54,963 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:15:54,964 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-19 08:15:54,964 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:15:54,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:15:54,970 INFO L85 PathProgramCache]: Analyzing trace with hash 58046, now seen corresponding path program 1 times [2022-11-19 08:15:54,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:15:54,981 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045013750] [2022-11-19 08:15:54,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:15:54,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:15:55,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-19 08:15:55,076 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-19 08:15:55,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-19 08:15:55,111 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-19 08:15:55,113 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-19 08:15:55,115 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-19 08:15:55,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-19 08:15:55,123 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-11-19 08:15:55,129 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-19 08:15:55,150 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 08:15:55 BoogieIcfgContainer [2022-11-19 08:15:55,150 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-19 08:15:55,151 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-19 08:15:55,151 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-19 08:15:55,151 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-19 08:15:55,152 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:15:54" (3/4) ... [2022-11-19 08:15:55,156 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-19 08:15:55,156 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-19 08:15:55,158 INFO L158 Benchmark]: Toolchain (without parser) took 988.85ms. Allocated memory is still 115.3MB. Free memory was 82.4MB in the beginning and 62.8MB in the end (delta: 19.6MB). Peak memory consumption was 15.9MB. Max. memory is 16.1GB. [2022-11-19 08:15:55,159 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 115.3MB. Free memory was 70.1MB in the beginning and 70.1MB in the end (delta: 45.4kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-19 08:15:55,159 INFO L158 Benchmark]: CACSL2BoogieTranslator took 300.28ms. Allocated memory is still 115.3MB. Free memory was 82.2MB in the beginning and 90.4MB in the end (delta: -8.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-19 08:15:55,160 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.71ms. Allocated memory is still 115.3MB. Free memory was 90.4MB in the beginning and 88.7MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-19 08:15:55,161 INFO L158 Benchmark]: Boogie Preprocessor took 31.98ms. Allocated memory is still 115.3MB. Free memory was 88.7MB in the beginning and 87.9MB in the end (delta: 773.8kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-19 08:15:55,162 INFO L158 Benchmark]: RCFGBuilder took 298.98ms. Allocated memory is still 115.3MB. Free memory was 87.9MB in the beginning and 77.0MB in the end (delta: 10.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-19 08:15:55,163 INFO L158 Benchmark]: TraceAbstraction took 306.21ms. Allocated memory is still 115.3MB. Free memory was 76.2MB in the beginning and 63.2MB in the end (delta: 13.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-19 08:15:55,163 INFO L158 Benchmark]: Witness Printer took 5.90ms. Allocated memory is still 115.3MB. Free memory was 63.2MB in the beginning and 62.8MB in the end (delta: 402.4kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-19 08:15:55,167 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 115.3MB. Free memory was 70.1MB in the beginning and 70.1MB in the end (delta: 45.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 300.28ms. Allocated memory is still 115.3MB. Free memory was 82.2MB in the beginning and 90.4MB in the end (delta: -8.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 36.71ms. Allocated memory is still 115.3MB. Free memory was 90.4MB in the beginning and 88.7MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 31.98ms. Allocated memory is still 115.3MB. Free memory was 88.7MB in the beginning and 87.9MB in the end (delta: 773.8kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 298.98ms. Allocated memory is still 115.3MB. Free memory was 87.9MB in the beginning and 77.0MB in the end (delta: 10.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 306.21ms. Allocated memory is still 115.3MB. Free memory was 76.2MB in the beginning and 63.2MB in the end (delta: 13.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Witness Printer took 5.90ms. Allocated memory is still 115.3MB. Free memory was 63.2MB in the beginning and 62.8MB in the end (delta: 402.4kB). 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: 11]: 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 22, overapproximation of someBinaryArithmeticFLOAToperation at line 21. Possible FailurePath: [L15] int x; [L16] float y, z; [L18] x = __VERIFIER_nondet_int() [L19] CALL assume_abort_if_not(x >= -10 && x <= 10) [L9] COND FALSE !(!cond) [L19] RET assume_abort_if_not(x >= -10 && x <= 10) [L21] y = x*x - 4.f [L22] CALL __VERIFIER_assert(y != 0.f) [L11] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L11] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 6 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.2s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s 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, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s 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 [2022-11-19 08:15:55,191 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71239e62-e350-4348-8a44-8b9a2098b9ce/bin/utaipan-I9t0OCRTmS/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/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71239e62-e350-4348-8a44-8b9a2098b9ce/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71239e62-e350-4348-8a44-8b9a2098b9ce/bin/utaipan-I9t0OCRTmS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71239e62-e350-4348-8a44-8b9a2098b9ce/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71239e62-e350-4348-8a44-8b9a2098b9ce/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/float_int_inv_square.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71239e62-e350-4348-8a44-8b9a2098b9ce/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71239e62-e350-4348-8a44-8b9a2098b9ce/bin/utaipan-I9t0OCRTmS --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 a3f1488b0e5756e8d9e219e50ec38e84e8e4fac76b2e3a5e1785d4e14d4111d8 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-19 08:15:57,575 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 08:15:57,579 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 08:15:57,611 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 08:15:57,612 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 08:15:57,616 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 08:15:57,619 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 08:15:57,623 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 08:15:57,625 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 08:15:57,633 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 08:15:57,635 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 08:15:57,637 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 08:15:57,638 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 08:15:57,640 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 08:15:57,641 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 08:15:57,646 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 08:15:57,647 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 08:15:57,649 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 08:15:57,651 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 08:15:57,655 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 08:15:57,657 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 08:15:57,659 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 08:15:57,661 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 08:15:57,662 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 08:15:57,673 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 08:15:57,673 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 08:15:57,673 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 08:15:57,675 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 08:15:57,676 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 08:15:57,677 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 08:15:57,678 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 08:15:57,679 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 08:15:57,681 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 08:15:57,682 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 08:15:57,683 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 08:15:57,683 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 08:15:57,684 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 08:15:57,685 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 08:15:57,685 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 08:15:57,687 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 08:15:57,690 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 08:15:57,691 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71239e62-e350-4348-8a44-8b9a2098b9ce/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2022-11-19 08:15:57,732 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 08:15:57,732 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 08:15:57,733 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 08:15:57,733 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 08:15:57,734 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 08:15:57,735 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 08:15:57,735 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 08:15:57,735 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 08:15:57,736 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 08:15:57,736 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 08:15:57,737 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 08:15:57,737 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 08:15:57,749 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 08:15:57,750 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-19 08:15:57,750 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-19 08:15:57,751 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 08:15:57,751 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 08:15:57,751 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 08:15:57,751 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 08:15:57,752 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-19 08:15:57,752 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-19 08:15:57,752 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-19 08:15:57,753 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-19 08:15:57,753 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 08:15:57,753 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 08:15:57,754 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 08:15:57,754 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 08:15:57,754 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-19 08:15:57,755 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 08:15:57,755 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 08:15:57,755 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 08:15:57,756 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 08:15:57,756 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 08:15:57,757 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-19 08:15:57,757 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-19 08:15:57,757 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 08:15:57,758 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 08:15:57,758 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-19 08:15:57,758 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_71239e62-e350-4348-8a44-8b9a2098b9ce/bin/utaipan-I9t0OCRTmS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71239e62-e350-4348-8a44-8b9a2098b9ce/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a3f1488b0e5756e8d9e219e50ec38e84e8e4fac76b2e3a5e1785d4e14d4111d8 [2022-11-19 08:15:58,151 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 08:15:58,175 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 08:15:58,178 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 08:15:58,179 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 08:15:58,180 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 08:15:58,182 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71239e62-e350-4348-8a44-8b9a2098b9ce/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/float-benchs/float_int_inv_square.c [2022-11-19 08:15:58,258 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71239e62-e350-4348-8a44-8b9a2098b9ce/bin/utaipan-I9t0OCRTmS/data/f62dedda7/89d62be611444d289465f309d0122da1/FLAG560753118 [2022-11-19 08:15:58,775 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 08:15:58,776 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71239e62-e350-4348-8a44-8b9a2098b9ce/sv-benchmarks/c/float-benchs/float_int_inv_square.c [2022-11-19 08:15:58,782 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71239e62-e350-4348-8a44-8b9a2098b9ce/bin/utaipan-I9t0OCRTmS/data/f62dedda7/89d62be611444d289465f309d0122da1/FLAG560753118 [2022-11-19 08:15:59,130 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71239e62-e350-4348-8a44-8b9a2098b9ce/bin/utaipan-I9t0OCRTmS/data/f62dedda7/89d62be611444d289465f309d0122da1 [2022-11-19 08:15:59,133 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 08:15:59,134 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 08:15:59,135 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 08:15:59,136 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 08:15:59,140 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 08:15:59,141 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:15:59" (1/1) ... [2022-11-19 08:15:59,143 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e5be4d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:15:59, skipping insertion in model container [2022-11-19 08:15:59,143 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:15:59" (1/1) ... [2022-11-19 08:15:59,150 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 08:15:59,162 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 08:15:59,307 WARN L234 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_71239e62-e350-4348-8a44-8b9a2098b9ce/sv-benchmarks/c/float-benchs/float_int_inv_square.c[488,501] [2022-11-19 08:15:59,319 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 08:15:59,331 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 08:15:59,360 WARN L234 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_71239e62-e350-4348-8a44-8b9a2098b9ce/sv-benchmarks/c/float-benchs/float_int_inv_square.c[488,501] [2022-11-19 08:15:59,383 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 08:15:59,402 INFO L208 MainTranslator]: Completed translation [2022-11-19 08:15:59,403 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:15:59 WrapperNode [2022-11-19 08:15:59,403 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 08:15:59,404 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 08:15:59,404 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 08:15:59,405 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 08:15:59,412 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:15:59" (1/1) ... [2022-11-19 08:15:59,422 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:15:59" (1/1) ... [2022-11-19 08:15:59,441 INFO L138 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 31 [2022-11-19 08:15:59,441 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 08:15:59,442 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 08:15:59,443 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 08:15:59,443 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 08:15:59,452 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:15:59" (1/1) ... [2022-11-19 08:15:59,452 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:15:59" (1/1) ... [2022-11-19 08:15:59,471 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:15:59" (1/1) ... [2022-11-19 08:15:59,471 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:15:59" (1/1) ... [2022-11-19 08:15:59,477 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:15:59" (1/1) ... [2022-11-19 08:15:59,480 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:15:59" (1/1) ... [2022-11-19 08:15:59,488 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:15:59" (1/1) ... [2022-11-19 08:15:59,489 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:15:59" (1/1) ... [2022-11-19 08:15:59,492 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 08:15:59,497 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 08:15:59,497 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 08:15:59,498 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 08:15:59,499 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:15:59" (1/1) ... [2022-11-19 08:15:59,507 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 08:15:59,519 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71239e62-e350-4348-8a44-8b9a2098b9ce/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:15:59,532 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71239e62-e350-4348-8a44-8b9a2098b9ce/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 08:15:59,555 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71239e62-e350-4348-8a44-8b9a2098b9ce/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 08:15:59,584 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 08:15:59,584 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-19 08:15:59,584 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 08:15:59,585 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 08:15:59,672 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 08:15:59,675 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 08:16:01,373 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 08:16:01,378 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 08:16:01,379 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-19 08:16:01,381 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:16:01 BoogieIcfgContainer [2022-11-19 08:16:01,381 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 08:16:01,383 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 08:16:01,383 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 08:16:01,386 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 08:16:01,387 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 08:15:59" (1/3) ... [2022-11-19 08:16:01,387 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b740afd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:16:01, skipping insertion in model container [2022-11-19 08:16:01,388 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:15:59" (2/3) ... [2022-11-19 08:16:01,388 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b740afd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:16:01, skipping insertion in model container [2022-11-19 08:16:01,388 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:16:01" (3/3) ... [2022-11-19 08:16:01,390 INFO L112 eAbstractionObserver]: Analyzing ICFG float_int_inv_square.c [2022-11-19 08:16:01,408 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 08:16:01,408 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-19 08:16:01,452 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 08:16:01,459 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@5c6e29e6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 08:16:01,459 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-19 08:16:01,471 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 10 states have internal predecessors, (12), 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) [2022-11-19 08:16:01,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-19 08:16:01,479 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:16:01,480 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-19 08:16:01,480 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:16:01,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:16:01,490 INFO L85 PathProgramCache]: Analyzing trace with hash 889508713, now seen corresponding path program 1 times [2022-11-19 08:16:01,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 08:16:01,505 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [429273774] [2022-11-19 08:16:01,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:16:01,506 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 08:16:01,506 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71239e62-e350-4348-8a44-8b9a2098b9ce/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 08:16:01,514 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71239e62-e350-4348-8a44-8b9a2098b9ce/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 08:16:01,532 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71239e62-e350-4348-8a44-8b9a2098b9ce/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-19 08:16:01,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:16:01,696 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-19 08:16:01,700 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:16:01,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:16:01,723 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 08:16:01,724 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 08:16:01,725 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [429273774] [2022-11-19 08:16:01,726 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [429273774] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:16:01,726 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:16:01,726 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 08:16:01,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294867412] [2022-11-19 08:16:01,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:16:01,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-19 08:16:01,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 08:16:01,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-19 08:16:01,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-19 08:16:01,778 INFO L87 Difference]: Start difference. First operand has 11 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 10 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 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) [2022-11-19 08:16:01,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:16:01,798 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2022-11-19 08:16:01,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-19 08:16:01,800 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 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) Word has length 6 [2022-11-19 08:16:01,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:16:01,809 INFO L225 Difference]: With dead ends: 19 [2022-11-19 08:16:01,809 INFO L226 Difference]: Without dead ends: 7 [2022-11-19 08:16:01,812 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-19 08:16:01,817 INFO L413 NwaCegarLoop]: 10 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, 10 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 [2022-11-19 08:16:01,819 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 08:16:01,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2022-11-19 08:16:01,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2022-11-19 08:16:01,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 6 states have (on average 1.0) internal successors, (6), 6 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) [2022-11-19 08:16:01,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 6 transitions. [2022-11-19 08:16:01,869 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 6 transitions. Word has length 6 [2022-11-19 08:16:01,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:16:01,869 INFO L495 AbstractCegarLoop]: Abstraction has 7 states and 6 transitions. [2022-11-19 08:16:01,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 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) [2022-11-19 08:16:01,870 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 6 transitions. [2022-11-19 08:16:01,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-19 08:16:01,871 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:16:01,871 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-19 08:16:01,897 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71239e62-e350-4348-8a44-8b9a2098b9ce/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-19 08:16:02,097 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71239e62-e350-4348-8a44-8b9a2098b9ce/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 08:16:02,097 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:16:02,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:16:02,098 INFO L85 PathProgramCache]: Analyzing trace with hash 889568295, now seen corresponding path program 1 times [2022-11-19 08:16:02,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 08:16:02,099 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2028647329] [2022-11-19 08:16:02,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:16:02,099 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 08:16:02,100 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71239e62-e350-4348-8a44-8b9a2098b9ce/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 08:16:02,101 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71239e62-e350-4348-8a44-8b9a2098b9ce/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 08:16:02,104 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71239e62-e350-4348-8a44-8b9a2098b9ce/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-19 08:16:02,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-19 08:16:02,192 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-19 08:16:02,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-19 08:16:02,285 INFO L130 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2022-11-19 08:16:02,285 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-19 08:16:02,288 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-19 08:16:02,315 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71239e62-e350-4348-8a44-8b9a2098b9ce/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-19 08:16:02,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71239e62-e350-4348-8a44-8b9a2098b9ce/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 08:16:02,493 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1] [2022-11-19 08:16:02,497 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-19 08:16:02,516 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 08:16:02 BoogieIcfgContainer [2022-11-19 08:16:02,516 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-19 08:16:02,517 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-19 08:16:02,517 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-19 08:16:02,517 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-19 08:16:02,518 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:16:01" (3/4) ... [2022-11-19 08:16:02,520 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-11-19 08:16:02,554 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71239e62-e350-4348-8a44-8b9a2098b9ce/bin/utaipan-I9t0OCRTmS/witness.graphml [2022-11-19 08:16:02,554 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-19 08:16:02,555 INFO L158 Benchmark]: Toolchain (without parser) took 3420.81ms. Allocated memory was 58.7MB in the beginning and 71.3MB in the end (delta: 12.6MB). Free memory was 39.3MB in the beginning and 37.5MB in the end (delta: 1.8MB). Peak memory consumption was 15.2MB. Max. memory is 16.1GB. [2022-11-19 08:16:02,556 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 58.7MB. Free memory was 40.6MB in the beginning and 40.5MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-19 08:16:02,556 INFO L158 Benchmark]: CACSL2BoogieTranslator took 268.22ms. Allocated memory is still 58.7MB. Free memory was 39.0MB in the beginning and 42.2MB in the end (delta: -3.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-19 08:16:02,557 INFO L158 Benchmark]: Boogie Procedure Inliner took 37.03ms. Allocated memory is still 58.7MB. Free memory was 42.2MB in the beginning and 40.5MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-19 08:16:02,557 INFO L158 Benchmark]: Boogie Preprocessor took 54.23ms. Allocated memory is still 58.7MB. Free memory was 40.5MB in the beginning and 39.5MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-19 08:16:02,558 INFO L158 Benchmark]: RCFGBuilder took 1884.02ms. Allocated memory is still 58.7MB. Free memory was 39.2MB in the beginning and 30.1MB in the end (delta: 9.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-19 08:16:02,558 INFO L158 Benchmark]: TraceAbstraction took 1133.03ms. Allocated memory was 58.7MB in the beginning and 71.3MB in the end (delta: 12.6MB). Free memory was 29.5MB in the beginning and 39.2MB in the end (delta: -9.7MB). Peak memory consumption was 5.8MB. Max. memory is 16.1GB. [2022-11-19 08:16:02,559 INFO L158 Benchmark]: Witness Printer took 37.51ms. Allocated memory is still 71.3MB. Free memory was 39.2MB in the beginning and 37.5MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-19 08:16:02,561 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 58.7MB. Free memory was 40.6MB in the beginning and 40.5MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 268.22ms. Allocated memory is still 58.7MB. Free memory was 39.0MB in the beginning and 42.2MB in the end (delta: -3.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 37.03ms. Allocated memory is still 58.7MB. Free memory was 42.2MB in the beginning and 40.5MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 54.23ms. Allocated memory is still 58.7MB. Free memory was 40.5MB in the beginning and 39.5MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 1884.02ms. Allocated memory is still 58.7MB. Free memory was 39.2MB in the beginning and 30.1MB in the end (delta: 9.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 1133.03ms. Allocated memory was 58.7MB in the beginning and 71.3MB in the end (delta: 12.6MB). Free memory was 29.5MB in the beginning and 39.2MB in the end (delta: -9.7MB). Peak memory consumption was 5.8MB. Max. memory is 16.1GB. * Witness Printer took 37.51ms. Allocated memory is still 71.3MB. Free memory was 39.2MB in the beginning and 37.5MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. 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: 11]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L15] int x; [L16] float y, z; [L18] x = __VERIFIER_nondet_int() [L19] CALL assume_abort_if_not(x >= -10 && x <= 10) [L9] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L19] RET assume_abort_if_not(x >= -10 && x <= 10) [L21] y = x*x - 4.f [L22] CALL __VERIFIER_assert(y != 0.f) [L11] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L11] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 11 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.1s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 10 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, 10 mSDtfsCounter, 0 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 5 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=11occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 12 NumberOfCodeBlocks, 12 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 5 ConstructedInterpolants, 0 QuantifiedInterpolants, 5 SizeOfPredicates, 0 NumberOfNonLiveVariables, 23 ConjunctsInSsa, 1 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2022-11-19 08:16:02,601 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_71239e62-e350-4348-8a44-8b9a2098b9ce/bin/utaipan-I9t0OCRTmS/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