./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_1271b.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e04fb08f 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_69ca66e0-2f91-4cb0-b898-5af43a0d6577/bin/utaipan-Xvt2sAort0/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69ca66e0-2f91-4cb0-b898-5af43a0d6577/bin/utaipan-Xvt2sAort0/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69ca66e0-2f91-4cb0-b898-5af43a0d6577/bin/utaipan-Xvt2sAort0/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69ca66e0-2f91-4cb0-b898-5af43a0d6577/bin/utaipan-Xvt2sAort0/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1271b.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69ca66e0-2f91-4cb0-b898-5af43a0d6577/bin/utaipan-Xvt2sAort0/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69ca66e0-2f91-4cb0-b898-5af43a0d6577/bin/utaipan-Xvt2sAort0 --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 54beaedde19fb88c3dc27e1161ae96882063bbaad8d02ac66ce4442258b91813 --- 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-e04fb08 [2022-11-16 20:16:59,730 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 20:16:59,732 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 20:16:59,759 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 20:16:59,759 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 20:16:59,760 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 20:16:59,762 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 20:16:59,763 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 20:16:59,769 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 20:16:59,770 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 20:16:59,771 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 20:16:59,773 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 20:16:59,773 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 20:16:59,779 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 20:16:59,780 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 20:16:59,782 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 20:16:59,784 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 20:16:59,788 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 20:16:59,790 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 20:16:59,793 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 20:16:59,801 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 20:16:59,803 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 20:16:59,810 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 20:16:59,811 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 20:16:59,815 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 20:16:59,818 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 20:16:59,818 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 20:16:59,819 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 20:16:59,820 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 20:16:59,821 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 20:16:59,822 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 20:16:59,823 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 20:16:59,824 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 20:16:59,826 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 20:16:59,827 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 20:16:59,828 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 20:16:59,828 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 20:16:59,829 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 20:16:59,829 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 20:16:59,830 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 20:16:59,831 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 20:16:59,832 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69ca66e0-2f91-4cb0-b898-5af43a0d6577/bin/utaipan-Xvt2sAort0/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-16 20:16:59,878 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 20:16:59,878 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 20:16:59,879 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 20:16:59,879 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 20:16:59,880 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 20:16:59,881 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 20:16:59,881 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-16 20:16:59,881 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-16 20:16:59,881 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-16 20:16:59,882 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-16 20:16:59,883 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-16 20:16:59,883 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-16 20:16:59,883 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-16 20:16:59,883 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-16 20:16:59,884 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-16 20:16:59,884 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-16 20:16:59,884 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-16 20:16:59,884 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-16 20:16:59,885 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 20:16:59,885 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 20:16:59,886 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 20:16:59,886 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 20:16:59,886 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 20:16:59,888 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 20:16:59,888 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 20:16:59,888 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 20:16:59,888 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 20:16:59,889 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 20:16:59,889 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 20:16:59,889 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 20:16:59,889 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 20:16:59,890 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 20:16:59,890 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 20:16:59,891 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 20:16:59,891 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-16 20:16:59,891 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 20:16:59,891 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 20:16:59,892 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-16 20:16:59,892 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 20:16:59,892 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 20:16:59,892 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-16 20:16:59,893 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_69ca66e0-2f91-4cb0-b898-5af43a0d6577/bin/utaipan-Xvt2sAort0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69ca66e0-2f91-4cb0-b898-5af43a0d6577/bin/utaipan-Xvt2sAort0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 54beaedde19fb88c3dc27e1161ae96882063bbaad8d02ac66ce4442258b91813 [2022-11-16 20:17:00,191 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 20:17:00,235 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 20:17:00,237 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 20:17:00,239 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 20:17:00,239 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 20:17:00,241 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69ca66e0-2f91-4cb0-b898-5af43a0d6577/bin/utaipan-Xvt2sAort0/../../sv-benchmarks/c/float-newlib/float_req_bl_1271b.c [2022-11-16 20:17:00,310 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69ca66e0-2f91-4cb0-b898-5af43a0d6577/bin/utaipan-Xvt2sAort0/data/a330d37f7/f9e007a9bbac4149951a0227ac686484/FLAG5d30df1b6 [2022-11-16 20:17:00,895 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 20:17:00,896 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69ca66e0-2f91-4cb0-b898-5af43a0d6577/sv-benchmarks/c/float-newlib/float_req_bl_1271b.c [2022-11-16 20:17:00,916 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69ca66e0-2f91-4cb0-b898-5af43a0d6577/bin/utaipan-Xvt2sAort0/data/a330d37f7/f9e007a9bbac4149951a0227ac686484/FLAG5d30df1b6 [2022-11-16 20:17:01,213 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69ca66e0-2f91-4cb0-b898-5af43a0d6577/bin/utaipan-Xvt2sAort0/data/a330d37f7/f9e007a9bbac4149951a0227ac686484 [2022-11-16 20:17:01,217 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 20:17:01,219 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 20:17:01,221 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 20:17:01,221 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 20:17:01,225 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 20:17:01,226 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 08:17:01" (1/1) ... [2022-11-16 20:17:01,227 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d94e21d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:17:01, skipping insertion in model container [2022-11-16 20:17:01,227 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 08:17:01" (1/1) ... [2022-11-16 20:17:01,234 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 20:17:01,272 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 20:17:01,537 WARN L229 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_69ca66e0-2f91-4cb0-b898-5af43a0d6577/sv-benchmarks/c/float-newlib/float_req_bl_1271b.c[4883,4896] [2022-11-16 20:17:01,540 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 20:17:01,547 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 20:17:01,600 WARN L229 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_69ca66e0-2f91-4cb0-b898-5af43a0d6577/sv-benchmarks/c/float-newlib/float_req_bl_1271b.c[4883,4896] [2022-11-16 20:17:01,601 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 20:17:01,615 INFO L208 MainTranslator]: Completed translation [2022-11-16 20:17:01,615 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:17:01 WrapperNode [2022-11-16 20:17:01,615 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 20:17:01,616 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 20:17:01,617 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 20:17:01,617 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 20:17:01,629 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:17:01" (1/1) ... [2022-11-16 20:17:01,654 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:17:01" (1/1) ... [2022-11-16 20:17:01,679 INFO L138 Inliner]: procedures = 19, calls = 76, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 262 [2022-11-16 20:17:01,679 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 20:17:01,680 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 20:17:01,680 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 20:17:01,680 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 20:17:01,693 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:17:01" (1/1) ... [2022-11-16 20:17:01,693 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:17:01" (1/1) ... [2022-11-16 20:17:01,698 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:17:01" (1/1) ... [2022-11-16 20:17:01,699 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:17:01" (1/1) ... [2022-11-16 20:17:01,710 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:17:01" (1/1) ... [2022-11-16 20:17:01,717 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:17:01" (1/1) ... [2022-11-16 20:17:01,719 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:17:01" (1/1) ... [2022-11-16 20:17:01,721 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:17:01" (1/1) ... [2022-11-16 20:17:01,725 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 20:17:01,726 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 20:17:01,726 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 20:17:01,726 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 20:17:01,727 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:17:01" (1/1) ... [2022-11-16 20:17:01,733 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 20:17:01,749 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69ca66e0-2f91-4cb0-b898-5af43a0d6577/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 20:17:01,764 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69ca66e0-2f91-4cb0-b898-5af43a0d6577/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 20:17:01,767 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69ca66e0-2f91-4cb0-b898-5af43a0d6577/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 20:17:01,806 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 20:17:01,807 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 20:17:01,807 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 20:17:01,807 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2022-11-16 20:17:01,807 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 20:17:01,807 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2022-11-16 20:17:01,808 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 20:17:01,808 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 20:17:01,808 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 20:17:01,808 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 20:17:01,808 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_sqrtf [2022-11-16 20:17:01,808 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_sqrtf [2022-11-16 20:17:01,905 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 20:17:01,907 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 20:17:02,556 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 20:17:02,736 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 20:17:02,737 INFO L300 CfgBuilder]: Removed 34 assume(true) statements. [2022-11-16 20:17:02,739 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 08:17:02 BoogieIcfgContainer [2022-11-16 20:17:02,739 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 20:17:02,742 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 20:17:02,742 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 20:17:02,746 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 20:17:02,746 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 08:17:01" (1/3) ... [2022-11-16 20:17:02,747 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f52836a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 08:17:02, skipping insertion in model container [2022-11-16 20:17:02,747 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:17:01" (2/3) ... [2022-11-16 20:17:02,747 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f52836a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 08:17:02, skipping insertion in model container [2022-11-16 20:17:02,748 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 08:17:02" (3/3) ... [2022-11-16 20:17:02,749 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_1271b.c [2022-11-16 20:17:02,768 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 20:17:02,768 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-16 20:17:02,823 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 20:17:02,829 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;@3b0f8c45, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 20:17:02,830 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-16 20:17:02,834 INFO L276 IsEmpty]: Start isEmpty. Operand has 74 states, 69 states have (on average 1.710144927536232) internal successors, (118), 70 states have internal predecessors, (118), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-16 20:17:02,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-16 20:17:02,841 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:17:02,842 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 20:17:02,843 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 20:17:02,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:17:02,848 INFO L85 PathProgramCache]: Analyzing trace with hash -464235239, now seen corresponding path program 1 times [2022-11-16 20:17:02,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 20:17:02,858 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433145924] [2022-11-16 20:17:02,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:17:02,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 20:17:02,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:17:03,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 20:17:03,005 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 20:17:03,006 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433145924] [2022-11-16 20:17:03,006 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1433145924] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 20:17:03,007 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 20:17:03,007 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 20:17:03,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513483203] [2022-11-16 20:17:03,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 20:17:03,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-16 20:17:03,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 20:17:03,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-16 20:17:03,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 20:17:03,045 INFO L87 Difference]: Start difference. First operand has 74 states, 69 states have (on average 1.710144927536232) internal successors, (118), 70 states have internal predecessors, (118), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:17:03,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:17:03,102 INFO L93 Difference]: Finished difference Result 147 states and 245 transitions. [2022-11-16 20:17:03,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-16 20:17:03,104 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-11-16 20:17:03,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:17:03,112 INFO L225 Difference]: With dead ends: 147 [2022-11-16 20:17:03,112 INFO L226 Difference]: Without dead ends: 71 [2022-11-16 20:17:03,115 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 20:17:03,119 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 20:17:03,120 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 77 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 20:17:03,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2022-11-16 20:17:03,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2022-11-16 20:17:03,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 67 states have (on average 1.208955223880597) internal successors, (81), 67 states have internal predecessors, (81), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-16 20:17:03,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 85 transitions. [2022-11-16 20:17:03,159 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 85 transitions. Word has length 14 [2022-11-16 20:17:03,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:17:03,160 INFO L495 AbstractCegarLoop]: Abstraction has 71 states and 85 transitions. [2022-11-16 20:17:03,160 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:17:03,160 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 85 transitions. [2022-11-16 20:17:03,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-16 20:17:03,161 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:17:03,161 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 20:17:03,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 20:17:03,162 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 20:17:03,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:17:03,163 INFO L85 PathProgramCache]: Analyzing trace with hash -515286866, now seen corresponding path program 1 times [2022-11-16 20:17:03,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 20:17:03,163 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439466945] [2022-11-16 20:17:03,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:17:03,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 20:17:03,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 20:17:03,260 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 20:17:03,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 20:17:03,383 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-16 20:17:03,387 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-16 20:17:03,389 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-16 20:17:03,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 20:17:03,396 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1] [2022-11-16 20:17:03,399 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-16 20:17:03,426 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.11 08:17:03 BoogieIcfgContainer [2022-11-16 20:17:03,426 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-16 20:17:03,427 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-16 20:17:03,427 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-16 20:17:03,427 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-16 20:17:03,427 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 08:17:02" (3/4) ... [2022-11-16 20:17:03,430 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-16 20:17:03,431 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-16 20:17:03,432 INFO L158 Benchmark]: Toolchain (without parser) took 2212.36ms. Allocated memory was 100.7MB in the beginning and 130.0MB in the end (delta: 29.4MB). Free memory was 65.4MB in the beginning and 55.0MB in the end (delta: 10.4MB). Peak memory consumption was 38.6MB. Max. memory is 16.1GB. [2022-11-16 20:17:03,432 INFO L158 Benchmark]: CDTParser took 0.23ms. Allocated memory is still 100.7MB. Free memory is still 81.9MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 20:17:03,432 INFO L158 Benchmark]: CACSL2BoogieTranslator took 394.61ms. Allocated memory is still 100.7MB. Free memory was 65.1MB in the beginning and 73.5MB in the end (delta: -8.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-16 20:17:03,433 INFO L158 Benchmark]: Boogie Procedure Inliner took 62.74ms. Allocated memory is still 100.7MB. Free memory was 73.5MB in the beginning and 71.0MB in the end (delta: 2.5MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 20:17:03,433 INFO L158 Benchmark]: Boogie Preprocessor took 45.19ms. Allocated memory is still 100.7MB. Free memory was 71.0MB in the beginning and 68.6MB in the end (delta: 2.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-16 20:17:03,434 INFO L158 Benchmark]: RCFGBuilder took 1013.95ms. Allocated memory was 100.7MB in the beginning and 130.0MB in the end (delta: 29.4MB). Free memory was 68.6MB in the beginning and 94.8MB in the end (delta: -26.2MB). Peak memory consumption was 34.8MB. Max. memory is 16.1GB. [2022-11-16 20:17:03,435 INFO L158 Benchmark]: TraceAbstraction took 683.99ms. Allocated memory is still 130.0MB. Free memory was 94.3MB in the beginning and 55.0MB in the end (delta: 39.3MB). Peak memory consumption was 39.8MB. Max. memory is 16.1GB. [2022-11-16 20:17:03,435 INFO L158 Benchmark]: Witness Printer took 4.03ms. Allocated memory is still 130.0MB. Free memory is still 55.0MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 20:17:03,438 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23ms. Allocated memory is still 100.7MB. Free memory is still 81.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 394.61ms. Allocated memory is still 100.7MB. Free memory was 65.1MB in the beginning and 73.5MB in the end (delta: -8.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 62.74ms. Allocated memory is still 100.7MB. Free memory was 73.5MB in the beginning and 71.0MB in the end (delta: 2.5MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 45.19ms. Allocated memory is still 100.7MB. Free memory was 71.0MB in the beginning and 68.6MB in the end (delta: 2.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 1013.95ms. Allocated memory was 100.7MB in the beginning and 130.0MB in the end (delta: 29.4MB). Free memory was 68.6MB in the beginning and 94.8MB in the end (delta: -26.2MB). Peak memory consumption was 34.8MB. Max. memory is 16.1GB. * TraceAbstraction took 683.99ms. Allocated memory is still 130.0MB. Free memory was 94.3MB in the beginning and 55.0MB in the end (delta: 39.3MB). Peak memory consumption was 39.8MB. Max. memory is 16.1GB. * Witness Printer took 4.03ms. Allocated memory is still 130.0MB. Free memory is still 55.0MB. 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: 241]: 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 213, overapproximation of someBinaryArithmeticFLOAToperation at line 120, overapproximation of bitwiseAnd at line 98. Possible FailurePath: [L14] static const float one_sqrt = 1.0, tiny_sqrt = 1.0e-30; [L234] float x = __VERIFIER_nondet_float(); [L235] float y = 0.0f / 0.0f; [L237] CALL isfinite_float(x) [L217] __int32_t ix; VAL [\old(x)=4294967329, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, x=4294967329] [L219] ieee_float_shape_type gf_u; [L220] gf_u.value = (x) [L221] EXPR gf_u.word [L221] (ix) = gf_u.word [L223] ix &= 0x7fffffff [L224] return (((ix) < 0x7f800000L)); [L237] RET isfinite_float(x) [L237] COND TRUE isfinite_float(x) [L238] CALL, EXPR __ieee754_hypotf(x, y) [L84] float a = x, b = y, t1, t2, y1, y2, w; [L85] __int32_t j, k, ha, hb; VAL [\old(x)=4294967329, \old(y)=4294967329, a=4294967329, b=4294967329, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, x=4294967329, y=4294967329] [L88] ieee_float_shape_type gf_u; [L89] gf_u.value = (x) [L90] EXPR gf_u.word [L90] (ha) = gf_u.word [L92] ha &= 0x7fffffffL VAL [\old(x)=4294967329, \old(y)=4294967329, a=4294967329, b=4294967329, ha=-251658241, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, x=4294967329, y=4294967329] [L94] ieee_float_shape_type gf_u; [L95] gf_u.value = (y) [L96] EXPR gf_u.word [L96] (hb) = gf_u.word [L98] hb &= 0x7fffffffL [L99] COND TRUE hb > ha [L100] a = y [L101] b = x [L102] j = ha [L103] ha = hb [L104] hb = j VAL [\old(x)=4294967329, \old(y)=4294967329, a=4294967329, b=4294967329, ha=0, hb=-251658241, j=-251658241, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, x=4294967329, y=4294967329] [L110] ieee_float_shape_type sf_u; [L111] sf_u.word = (ha) [L112] EXPR sf_u.value [L112] (a) = sf_u.value [L115] ieee_float_shape_type sf_u; [L116] sf_u.word = (hb) [L117] EXPR sf_u.value [L117] (b) = sf_u.value [L119] COND TRUE (ha - hb) > 0xf000000L [L120] return a + b; VAL [\old(x)=4294967329, \old(y)=4294967329, a=4294967328, b=4294967327, ha=0, hb=-251658241, j=-251658241, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, x=4294967329, y=4294967329] [L238] RET, EXPR __ieee754_hypotf(x, y) [L238] float res = __ieee754_hypotf(x, y); [L240] CALL, EXPR isnan_float(res) [L213] return x != x; [L240] RET, EXPR isnan_float(res) [L240] COND TRUE !isnan_float(res) [L241] reach_error() VAL [one_sqrt=1, res=4294967326, tiny_sqrt=1/1000000000000000000000000000000, x=4294967329, y=4294967329] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 74 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.6s, 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, 77 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 12 IncrementalHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 77 mSDtfsCounter, 12 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=74occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 33 NumberOfCodeBlocks, 33 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 13 ConstructedInterpolants, 0 QuantifiedInterpolants, 13 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-11-16 20:17:03,457 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69ca66e0-2f91-4cb0-b898-5af43a0d6577/bin/utaipan-Xvt2sAort0/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_69ca66e0-2f91-4cb0-b898-5af43a0d6577/bin/utaipan-Xvt2sAort0/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69ca66e0-2f91-4cb0-b898-5af43a0d6577/bin/utaipan-Xvt2sAort0/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69ca66e0-2f91-4cb0-b898-5af43a0d6577/bin/utaipan-Xvt2sAort0/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69ca66e0-2f91-4cb0-b898-5af43a0d6577/bin/utaipan-Xvt2sAort0/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1271b.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69ca66e0-2f91-4cb0-b898-5af43a0d6577/bin/utaipan-Xvt2sAort0/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69ca66e0-2f91-4cb0-b898-5af43a0d6577/bin/utaipan-Xvt2sAort0 --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 54beaedde19fb88c3dc27e1161ae96882063bbaad8d02ac66ce4442258b91813 --- 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-e04fb08 [2022-11-16 20:17:05,783 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 20:17:05,786 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 20:17:05,814 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 20:17:05,816 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 20:17:05,821 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 20:17:05,824 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 20:17:05,829 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 20:17:05,832 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 20:17:05,833 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 20:17:05,834 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 20:17:05,835 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 20:17:05,835 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 20:17:05,836 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 20:17:05,837 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 20:17:05,838 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 20:17:05,839 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 20:17:05,840 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 20:17:05,845 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 20:17:05,851 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 20:17:05,853 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 20:17:05,857 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 20:17:05,858 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 20:17:05,859 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 20:17:05,880 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 20:17:05,880 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 20:17:05,880 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 20:17:05,881 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 20:17:05,882 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 20:17:05,883 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 20:17:05,883 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 20:17:05,884 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 20:17:05,887 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 20:17:05,888 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 20:17:05,889 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 20:17:05,891 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 20:17:05,892 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 20:17:05,893 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 20:17:05,893 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 20:17:05,894 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 20:17:05,894 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 20:17:05,898 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69ca66e0-2f91-4cb0-b898-5af43a0d6577/bin/utaipan-Xvt2sAort0/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2022-11-16 20:17:05,947 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 20:17:05,947 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 20:17:05,948 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 20:17:05,948 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 20:17:05,949 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 20:17:05,949 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 20:17:05,949 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-16 20:17:05,950 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-16 20:17:05,950 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-16 20:17:05,950 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-16 20:17:05,950 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-16 20:17:05,950 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-16 20:17:05,951 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 20:17:05,951 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 20:17:05,952 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 20:17:05,952 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 20:17:05,952 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 20:17:05,952 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 20:17:05,953 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 20:17:05,953 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-16 20:17:05,953 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-16 20:17:05,953 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-16 20:17:05,953 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 20:17:05,954 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 20:17:05,954 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 20:17:05,954 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 20:17:05,954 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 20:17:05,955 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 20:17:05,955 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 20:17:05,955 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 20:17:05,955 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 20:17:05,955 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 20:17:05,956 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 20:17:05,956 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-16 20:17:05,956 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-16 20:17:05,956 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 20:17:05,957 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-16 20:17:05,957 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-16 20:17:05,957 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_69ca66e0-2f91-4cb0-b898-5af43a0d6577/bin/utaipan-Xvt2sAort0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69ca66e0-2f91-4cb0-b898-5af43a0d6577/bin/utaipan-Xvt2sAort0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 54beaedde19fb88c3dc27e1161ae96882063bbaad8d02ac66ce4442258b91813 [2022-11-16 20:17:06,314 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 20:17:06,336 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 20:17:06,339 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 20:17:06,340 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 20:17:06,341 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 20:17:06,342 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69ca66e0-2f91-4cb0-b898-5af43a0d6577/bin/utaipan-Xvt2sAort0/../../sv-benchmarks/c/float-newlib/float_req_bl_1271b.c [2022-11-16 20:17:06,421 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69ca66e0-2f91-4cb0-b898-5af43a0d6577/bin/utaipan-Xvt2sAort0/data/e0b502711/e7b94154cdb9489398636d700550ab61/FLAG34b5f5703 [2022-11-16 20:17:06,996 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 20:17:06,997 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69ca66e0-2f91-4cb0-b898-5af43a0d6577/sv-benchmarks/c/float-newlib/float_req_bl_1271b.c [2022-11-16 20:17:07,004 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69ca66e0-2f91-4cb0-b898-5af43a0d6577/bin/utaipan-Xvt2sAort0/data/e0b502711/e7b94154cdb9489398636d700550ab61/FLAG34b5f5703 [2022-11-16 20:17:07,345 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69ca66e0-2f91-4cb0-b898-5af43a0d6577/bin/utaipan-Xvt2sAort0/data/e0b502711/e7b94154cdb9489398636d700550ab61 [2022-11-16 20:17:07,347 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 20:17:07,349 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 20:17:07,350 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 20:17:07,351 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 20:17:07,354 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 20:17:07,355 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 08:17:07" (1/1) ... [2022-11-16 20:17:07,356 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38760a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:17:07, skipping insertion in model container [2022-11-16 20:17:07,356 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 08:17:07" (1/1) ... [2022-11-16 20:17:07,364 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 20:17:07,384 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 20:17:07,613 WARN L229 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_69ca66e0-2f91-4cb0-b898-5af43a0d6577/sv-benchmarks/c/float-newlib/float_req_bl_1271b.c[4883,4896] [2022-11-16 20:17:07,643 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 20:17:07,660 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 20:17:07,705 WARN L229 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_69ca66e0-2f91-4cb0-b898-5af43a0d6577/sv-benchmarks/c/float-newlib/float_req_bl_1271b.c[4883,4896] [2022-11-16 20:17:07,706 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 20:17:07,721 INFO L208 MainTranslator]: Completed translation [2022-11-16 20:17:07,721 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:17:07 WrapperNode [2022-11-16 20:17:07,721 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 20:17:07,723 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 20:17:07,723 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 20:17:07,723 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 20:17:07,730 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:17:07" (1/1) ... [2022-11-16 20:17:07,743 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:17:07" (1/1) ... [2022-11-16 20:17:07,779 INFO L138 Inliner]: procedures = 22, calls = 76, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 261 [2022-11-16 20:17:07,780 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 20:17:07,780 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 20:17:07,780 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 20:17:07,781 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 20:17:07,791 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:17:07" (1/1) ... [2022-11-16 20:17:07,792 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:17:07" (1/1) ... [2022-11-16 20:17:07,798 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:17:07" (1/1) ... [2022-11-16 20:17:07,799 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:17:07" (1/1) ... [2022-11-16 20:17:07,811 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:17:07" (1/1) ... [2022-11-16 20:17:07,819 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:17:07" (1/1) ... [2022-11-16 20:17:07,822 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:17:07" (1/1) ... [2022-11-16 20:17:07,824 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:17:07" (1/1) ... [2022-11-16 20:17:07,828 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 20:17:07,829 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 20:17:07,829 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 20:17:07,829 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 20:17:07,830 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:17:07" (1/1) ... [2022-11-16 20:17:07,836 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 20:17:07,850 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69ca66e0-2f91-4cb0-b898-5af43a0d6577/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 20:17:07,865 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69ca66e0-2f91-4cb0-b898-5af43a0d6577/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 20:17:07,867 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69ca66e0-2f91-4cb0-b898-5af43a0d6577/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 20:17:07,903 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 20:17:07,904 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-16 20:17:07,904 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 20:17:07,904 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2022-11-16 20:17:07,904 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-16 20:17:07,904 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 20:17:07,904 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 20:17:07,904 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2022-11-16 20:17:07,905 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-16 20:17:07,905 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 20:17:07,905 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_sqrtf [2022-11-16 20:17:07,905 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_sqrtf [2022-11-16 20:17:08,045 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 20:17:08,047 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 20:17:10,650 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 20:17:10,671 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 20:17:10,671 INFO L300 CfgBuilder]: Removed 34 assume(true) statements. [2022-11-16 20:17:10,673 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 08:17:10 BoogieIcfgContainer [2022-11-16 20:17:10,674 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 20:17:10,676 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 20:17:10,676 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 20:17:10,679 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 20:17:10,680 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 08:17:07" (1/3) ... [2022-11-16 20:17:10,680 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29892dda and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 08:17:10, skipping insertion in model container [2022-11-16 20:17:10,681 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:17:07" (2/3) ... [2022-11-16 20:17:10,681 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29892dda and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 08:17:10, skipping insertion in model container [2022-11-16 20:17:10,681 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 08:17:10" (3/3) ... [2022-11-16 20:17:10,682 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_1271b.c [2022-11-16 20:17:10,702 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 20:17:10,703 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-16 20:17:10,767 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 20:17:10,774 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;@4602f420, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 20:17:10,774 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-16 20:17:10,781 INFO L276 IsEmpty]: Start isEmpty. Operand has 92 states, 87 states have (on average 1.6781609195402298) internal successors, (146), 88 states have internal predecessors, (146), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-16 20:17:10,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-16 20:17:10,798 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:17:10,799 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 20:17:10,800 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 20:17:10,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:17:10,806 INFO L85 PathProgramCache]: Analyzing trace with hash -1119796192, now seen corresponding path program 1 times [2022-11-16 20:17:10,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-16 20:17:10,819 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [739664004] [2022-11-16 20:17:10,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:17:10,820 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 [2022-11-16 20:17:10,820 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69ca66e0-2f91-4cb0-b898-5af43a0d6577/bin/utaipan-Xvt2sAort0/mathsat [2022-11-16 20:17:10,825 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69ca66e0-2f91-4cb0-b898-5af43a0d6577/bin/utaipan-Xvt2sAort0/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) [2022-11-16 20:17:10,827 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69ca66e0-2f91-4cb0-b898-5af43a0d6577/bin/utaipan-Xvt2sAort0/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 [2022-11-16 20:17:11,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:17:11,043 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-16 20:17:11,048 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 20:17:11,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 20:17:11,084 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 20:17:11,085 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-16 20:17:11,086 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [739664004] [2022-11-16 20:17:11,086 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [739664004] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 20:17:11,086 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 20:17:11,088 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 20:17:11,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402314198] [2022-11-16 20:17:11,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 20:17:11,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-16 20:17:11,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-16 20:17:11,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-16 20:17:11,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 20:17:11,147 INFO L87 Difference]: Start difference. First operand has 92 states, 87 states have (on average 1.6781609195402298) internal successors, (146), 88 states have internal predecessors, (146), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 9.0) internal successors, (18), 2 states have internal predecessors, (18), 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) [2022-11-16 20:17:11,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:17:11,212 INFO L93 Difference]: Finished difference Result 182 states and 300 transitions. [2022-11-16 20:17:11,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-16 20:17:11,214 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 9.0) internal successors, (18), 2 states have internal predecessors, (18), 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 18 [2022-11-16 20:17:11,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:17:11,225 INFO L225 Difference]: With dead ends: 182 [2022-11-16 20:17:11,225 INFO L226 Difference]: Without dead ends: 88 [2022-11-16 20:17:11,229 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 20:17:11,235 INFO L413 NwaCegarLoop]: 115 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, 115 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 [2022-11-16 20:17:11,237 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 20:17:11,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2022-11-16 20:17:11,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2022-11-16 20:17:11,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 84 states have (on average 1.2619047619047619) internal successors, (106), 84 states have internal predecessors, (106), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-16 20:17:11,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 110 transitions. [2022-11-16 20:17:11,282 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 110 transitions. Word has length 18 [2022-11-16 20:17:11,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:17:11,282 INFO L495 AbstractCegarLoop]: Abstraction has 88 states and 110 transitions. [2022-11-16 20:17:11,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 9.0) internal successors, (18), 2 states have internal predecessors, (18), 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) [2022-11-16 20:17:11,283 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 110 transitions. [2022-11-16 20:17:11,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-16 20:17:11,284 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:17:11,284 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 20:17:11,295 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69ca66e0-2f91-4cb0-b898-5af43a0d6577/bin/utaipan-Xvt2sAort0/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 [2022-11-16 20:17:11,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69ca66e0-2f91-4cb0-b898-5af43a0d6577/bin/utaipan-Xvt2sAort0/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 [2022-11-16 20:17:11,486 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 20:17:11,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:17:11,487 INFO L85 PathProgramCache]: Analyzing trace with hash 46998031, now seen corresponding path program 1 times [2022-11-16 20:17:11,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-16 20:17:11,488 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1998062711] [2022-11-16 20:17:11,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:17:11,488 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 [2022-11-16 20:17:11,489 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69ca66e0-2f91-4cb0-b898-5af43a0d6577/bin/utaipan-Xvt2sAort0/mathsat [2022-11-16 20:17:11,490 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69ca66e0-2f91-4cb0-b898-5af43a0d6577/bin/utaipan-Xvt2sAort0/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) [2022-11-16 20:17:11,518 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69ca66e0-2f91-4cb0-b898-5af43a0d6577/bin/utaipan-Xvt2sAort0/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 [2022-11-16 20:17:11,650 ERROR L418 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69ca66e0-2f91-4cb0-b898-5af43a0d6577/bin/utaipan-Xvt2sAort0/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)] Exception during sending of exit command (exit): Broken pipe [2022-11-16 20:17:11,652 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69ca66e0-2f91-4cb0-b898-5af43a0d6577/bin/utaipan-Xvt2sAort0/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 139 [2022-11-16 20:17:11,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69ca66e0-2f91-4cb0-b898-5af43a0d6577/bin/utaipan-Xvt2sAort0/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 [2022-11-16 20:17:11,851 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69ca66e0-2f91-4cb0-b898-5af43a0d6577/bin/utaipan-Xvt2sAort0/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) with exit command (exit)) Received EOF on stdin. No stderr output. at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheck.(TraceCheck.java:236) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheck.(InterpolatingTraceCheck.java:91) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:132) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:209) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:121) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:336) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:262) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69ca66e0-2f91-4cb0-b898-5af43a0d6577/bin/utaipan-Xvt2sAort0/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) with exit command (exit)) Received EOF on stdin. No stderr output. at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:243) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseCheckSatResult(Executor.java:262) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.checkSat(Scriptor.java:155) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.AnnotateAndAsserter.buildAnnotatedSsaAndAssertTerms(AnnotateAndAsserter.java:130) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheck.checkTrace(TraceCheck.java:317) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheck.(TraceCheck.java:215) ... 30 more Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1465) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:658) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:383) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:239) ... 37 more [2022-11-16 20:17:11,855 INFO L158 Benchmark]: Toolchain (without parser) took 4505.79ms. Allocated memory was 60.8MB in the beginning and 81.8MB in the end (delta: 21.0MB). Free memory was 41.5MB in the beginning and 40.4MB in the end (delta: 1.2MB). Peak memory consumption was 23.4MB. Max. memory is 16.1GB. [2022-11-16 20:17:11,855 INFO L158 Benchmark]: CDTParser took 0.24ms. Allocated memory is still 60.8MB. Free memory was 42.3MB in the beginning and 42.2MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 20:17:11,856 INFO L158 Benchmark]: CACSL2BoogieTranslator took 371.53ms. Allocated memory is still 60.8MB. Free memory was 41.4MB in the beginning and 41.8MB in the end (delta: -413.5kB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-16 20:17:11,857 INFO L158 Benchmark]: Boogie Procedure Inliner took 57.20ms. Allocated memory is still 60.8MB. Free memory was 41.8MB in the beginning and 39.3MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 20:17:11,857 INFO L158 Benchmark]: Boogie Preprocessor took 48.11ms. Allocated memory is still 60.8MB. Free memory was 39.3MB in the beginning and 36.7MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 20:17:11,858 INFO L158 Benchmark]: RCFGBuilder took 2844.80ms. Allocated memory is still 60.8MB. Free memory was 36.7MB in the beginning and 28.8MB in the end (delta: 8.0MB). Peak memory consumption was 17.3MB. Max. memory is 16.1GB. [2022-11-16 20:17:11,858 INFO L158 Benchmark]: TraceAbstraction took 1178.01ms. Allocated memory was 60.8MB in the beginning and 81.8MB in the end (delta: 21.0MB). Free memory was 28.1MB in the beginning and 40.4MB in the end (delta: -12.2MB). Peak memory consumption was 9.2MB. Max. memory is 16.1GB. [2022-11-16 20:17:11,862 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 60.8MB. Free memory was 42.3MB in the beginning and 42.2MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 371.53ms. Allocated memory is still 60.8MB. Free memory was 41.4MB in the beginning and 41.8MB in the end (delta: -413.5kB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 57.20ms. Allocated memory is still 60.8MB. Free memory was 41.8MB in the beginning and 39.3MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 48.11ms. Allocated memory is still 60.8MB. Free memory was 39.3MB in the beginning and 36.7MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 2844.80ms. Allocated memory is still 60.8MB. Free memory was 36.7MB in the beginning and 28.8MB in the end (delta: 8.0MB). Peak memory consumption was 17.3MB. Max. memory is 16.1GB. * TraceAbstraction took 1178.01ms. Allocated memory was 60.8MB in the beginning and 81.8MB in the end (delta: 21.0MB). Free memory was 28.1MB in the beginning and 40.4MB in the end (delta: -12.2MB). Peak memory consumption was 9.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69ca66e0-2f91-4cb0-b898-5af43a0d6577/bin/utaipan-Xvt2sAort0/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) with exit command (exit)) Received EOF on stdin. No stderr output. de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69ca66e0-2f91-4cb0-b898-5af43a0d6577/bin/utaipan-Xvt2sAort0/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) with exit command (exit)) Received EOF on stdin. No stderr output.: de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheck.(TraceCheck.java:236) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2022-11-16 20:17:11,914 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69ca66e0-2f91-4cb0-b898-5af43a0d6577/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: AssertionError: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69ca66e0-2f91-4cb0-b898-5af43a0d6577/bin/utaipan-Xvt2sAort0/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) with exit command (exit)) Received EOF on stdin. No stderr output.