./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_1270d.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e7fbc69 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_82e9e310-2976-4925-9eda-13d2552b75c0/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82e9e310-2976-4925-9eda-13d2552b75c0/bin/utaipan-Q6hlc19bkW/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82e9e310-2976-4925-9eda-13d2552b75c0/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82e9e310-2976-4925-9eda-13d2552b75c0/bin/utaipan-Q6hlc19bkW/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1270d.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82e9e310-2976-4925-9eda-13d2552b75c0/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82e9e310-2976-4925-9eda-13d2552b75c0/bin/utaipan-Q6hlc19bkW --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 38626a16356f67aaf09cedb2585feb986fe72ed23b75358e37f00f94c56ef8f0 --- 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-4e7fbc6 [2022-11-23 15:23:12,881 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 15:23:12,884 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 15:23:12,920 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 15:23:12,923 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 15:23:12,928 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 15:23:12,930 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 15:23:12,934 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 15:23:12,937 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 15:23:12,938 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 15:23:12,939 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 15:23:12,940 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 15:23:12,940 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 15:23:12,941 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 15:23:12,943 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 15:23:12,944 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 15:23:12,945 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 15:23:12,945 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 15:23:12,947 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 15:23:12,949 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 15:23:12,951 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 15:23:12,952 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 15:23:12,953 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 15:23:12,954 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 15:23:12,958 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 15:23:12,959 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 15:23:12,959 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 15:23:12,960 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 15:23:12,961 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 15:23:12,962 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 15:23:12,962 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 15:23:12,963 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 15:23:12,964 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 15:23:12,965 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 15:23:12,966 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 15:23:12,967 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 15:23:12,967 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 15:23:12,968 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 15:23:12,968 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 15:23:12,969 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 15:23:12,970 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 15:23:12,971 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82e9e310-2976-4925-9eda-13d2552b75c0/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-23 15:23:12,997 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 15:23:12,997 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 15:23:12,998 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 15:23:12,998 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 15:23:12,999 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 15:23:12,999 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 15:23:13,000 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 15:23:13,000 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 15:23:13,000 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 15:23:13,000 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-23 15:23:13,001 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 15:23:13,001 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 15:23:13,001 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-23 15:23:13,002 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-23 15:23:13,002 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 15:23:13,002 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-23 15:23:13,002 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-23 15:23:13,003 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-23 15:23:13,004 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 15:23:13,004 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-23 15:23:13,004 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 15:23:13,004 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-23 15:23:13,005 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 15:23:13,005 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 15:23:13,005 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 15:23:13,005 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 15:23:13,006 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-23 15:23:13,006 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 15:23:13,006 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 15:23:13,006 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 15:23:13,007 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 15:23:13,007 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 15:23:13,007 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 15:23:13,008 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 15:23:13,008 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-23 15:23:13,008 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 15:23:13,008 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 15:23:13,009 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-23 15:23:13,009 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 15:23:13,009 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 15:23:13,009 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 15:23:13,010 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_82e9e310-2976-4925-9eda-13d2552b75c0/bin/utaipan-Q6hlc19bkW/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82e9e310-2976-4925-9eda-13d2552b75c0/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 38626a16356f67aaf09cedb2585feb986fe72ed23b75358e37f00f94c56ef8f0 [2022-11-23 15:23:13,336 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 15:23:13,372 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 15:23:13,374 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 15:23:13,376 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 15:23:13,376 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 15:23:13,378 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82e9e310-2976-4925-9eda-13d2552b75c0/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/float-newlib/float_req_bl_1270d.c [2022-11-23 15:23:16,494 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 15:23:16,699 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 15:23:16,699 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82e9e310-2976-4925-9eda-13d2552b75c0/sv-benchmarks/c/float-newlib/float_req_bl_1270d.c [2022-11-23 15:23:16,707 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82e9e310-2976-4925-9eda-13d2552b75c0/bin/utaipan-Q6hlc19bkW/data/d2c340698/64619543363b4701b39deeb0aaa2e614/FLAG31eec5b14 [2022-11-23 15:23:16,723 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82e9e310-2976-4925-9eda-13d2552b75c0/bin/utaipan-Q6hlc19bkW/data/d2c340698/64619543363b4701b39deeb0aaa2e614 [2022-11-23 15:23:16,725 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 15:23:16,727 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 15:23:16,728 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 15:23:16,729 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 15:23:16,732 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 15:23:16,733 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:23:16" (1/1) ... [2022-11-23 15:23:16,735 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@371a9a78 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:23:16, skipping insertion in model container [2022-11-23 15:23:16,735 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:23:16" (1/1) ... [2022-11-23 15:23:16,743 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 15:23:16,767 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 15:23:17,059 WARN L237 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_82e9e310-2976-4925-9eda-13d2552b75c0/sv-benchmarks/c/float-newlib/float_req_bl_1270d.c[4704,4717] [2022-11-23 15:23:17,074 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 15:23:17,086 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 15:23:17,158 WARN L237 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_82e9e310-2976-4925-9eda-13d2552b75c0/sv-benchmarks/c/float-newlib/float_req_bl_1270d.c[4704,4717] [2022-11-23 15:23:17,159 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 15:23:17,173 INFO L208 MainTranslator]: Completed translation [2022-11-23 15:23:17,174 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:23:17 WrapperNode [2022-11-23 15:23:17,174 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 15:23:17,175 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 15:23:17,175 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 15:23:17,175 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 15:23:17,183 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:23:17" (1/1) ... [2022-11-23 15:23:17,193 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:23:17" (1/1) ... [2022-11-23 15:23:17,235 INFO L138 Inliner]: procedures = 18, calls = 75, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 254 [2022-11-23 15:23:17,236 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 15:23:17,237 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 15:23:17,237 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 15:23:17,237 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 15:23:17,247 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:23:17" (1/1) ... [2022-11-23 15:23:17,248 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:23:17" (1/1) ... [2022-11-23 15:23:17,263 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:23:17" (1/1) ... [2022-11-23 15:23:17,268 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:23:17" (1/1) ... [2022-11-23 15:23:17,285 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:23:17" (1/1) ... [2022-11-23 15:23:17,305 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:23:17" (1/1) ... [2022-11-23 15:23:17,307 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:23:17" (1/1) ... [2022-11-23 15:23:17,309 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:23:17" (1/1) ... [2022-11-23 15:23:17,312 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 15:23:17,320 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 15:23:17,320 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 15:23:17,320 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 15:23:17,321 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:23:17" (1/1) ... [2022-11-23 15:23:17,327 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 15:23:17,337 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82e9e310-2976-4925-9eda-13d2552b75c0/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:23:17,357 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82e9e310-2976-4925-9eda-13d2552b75c0/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 15:23:17,387 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82e9e310-2976-4925-9eda-13d2552b75c0/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 15:23:17,408 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 15:23:17,408 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 15:23:17,408 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-23 15:23:17,409 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2022-11-23 15:23:17,409 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-23 15:23:17,409 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2022-11-23 15:23:17,409 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 15:23:17,409 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 15:23:17,410 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-23 15:23:17,410 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-23 15:23:17,410 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_sqrtf [2022-11-23 15:23:17,410 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_sqrtf [2022-11-23 15:23:17,549 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 15:23:17,551 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 15:23:18,102 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 15:23:18,261 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 15:23:18,262 INFO L300 CfgBuilder]: Removed 34 assume(true) statements. [2022-11-23 15:23:18,264 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:23:18 BoogieIcfgContainer [2022-11-23 15:23:18,264 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 15:23:18,267 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 15:23:18,267 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 15:23:18,270 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 15:23:18,271 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:23:16" (1/3) ... [2022-11-23 15:23:18,271 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d83ded0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:23:18, skipping insertion in model container [2022-11-23 15:23:18,271 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:23:17" (2/3) ... [2022-11-23 15:23:18,272 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d83ded0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:23:18, skipping insertion in model container [2022-11-23 15:23:18,272 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:23:18" (3/3) ... [2022-11-23 15:23:18,273 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_1270d.c [2022-11-23 15:23:18,292 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 15:23:18,293 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-23 15:23:18,343 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 15:23:18,349 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;@604a98f3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 15:23:18,350 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-23 15:23:18,354 INFO L276 IsEmpty]: Start isEmpty. Operand has 72 states, 67 states have (on average 1.7164179104477613) internal successors, (115), 68 states have internal predecessors, (115), 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) [2022-11-23 15:23:18,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-23 15:23:18,361 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:23:18,361 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:23:18,362 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:23:18,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:23:18,368 INFO L85 PathProgramCache]: Analyzing trace with hash 1867774098, now seen corresponding path program 1 times [2022-11-23 15:23:18,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:23:18,386 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558279037] [2022-11-23 15:23:18,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:23:18,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:23:18,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:23:18,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:23:18,597 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:23:18,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558279037] [2022-11-23 15:23:18,598 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [558279037] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:23:18,599 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:23:18,599 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 15:23:18,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082541514] [2022-11-23 15:23:18,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:23:18,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-23 15:23:18,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:23:18,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-23 15:23:18,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-23 15:23:18,662 INFO L87 Difference]: Start difference. First operand has 72 states, 67 states have (on average 1.7164179104477613) internal successors, (115), 68 states have internal predecessors, (115), 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 6.5) internal successors, (13), 2 states have internal predecessors, (13), 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) [2022-11-23 15:23:18,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:23:18,751 INFO L93 Difference]: Finished difference Result 143 states and 239 transitions. [2022-11-23 15:23:18,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-23 15:23:18,754 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 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 13 [2022-11-23 15:23:18,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:23:18,763 INFO L225 Difference]: With dead ends: 143 [2022-11-23 15:23:18,764 INFO L226 Difference]: Without dead ends: 70 [2022-11-23 15:23:18,768 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 [2022-11-23 15:23:18,775 INFO L413 NwaCegarLoop]: 76 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 15:23:18,776 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 76 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 15:23:18,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2022-11-23 15:23:18,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2022-11-23 15:23:18,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 66 states have (on average 1.2121212121212122) internal successors, (80), 66 states have internal predecessors, (80), 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) [2022-11-23 15:23:18,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 84 transitions. [2022-11-23 15:23:18,835 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 84 transitions. Word has length 13 [2022-11-23 15:23:18,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:23:18,836 INFO L495 AbstractCegarLoop]: Abstraction has 70 states and 84 transitions. [2022-11-23 15:23:18,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 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) [2022-11-23 15:23:18,838 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 84 transitions. [2022-11-23 15:23:18,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-23 15:23:18,840 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:23:18,840 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:23:18,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 15:23:18,841 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:23:18,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:23:18,842 INFO L85 PathProgramCache]: Analyzing trace with hash -573064207, now seen corresponding path program 1 times [2022-11-23 15:23:18,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:23:18,843 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626848178] [2022-11-23 15:23:18,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:23:18,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:23:18,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 15:23:18,939 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-23 15:23:19,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 15:23:19,065 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-23 15:23:19,065 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-23 15:23:19,067 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-23 15:23:19,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-23 15:23:19,077 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1] [2022-11-23 15:23:19,080 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-23 15:23:19,130 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 03:23:19 BoogieIcfgContainer [2022-11-23 15:23:19,130 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-23 15:23:19,131 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-23 15:23:19,131 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-23 15:23:19,131 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-23 15:23:19,132 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:23:18" (3/4) ... [2022-11-23 15:23:19,139 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-23 15:23:19,139 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-23 15:23:19,141 INFO L158 Benchmark]: Toolchain (without parser) took 2413.06ms. Allocated memory is still 148.9MB. Free memory was 106.4MB in the beginning and 112.0MB in the end (delta: -5.6MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 15:23:19,142 INFO L158 Benchmark]: CDTParser took 0.24ms. Allocated memory is still 109.1MB. Free memory is still 83.8MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 15:23:19,145 INFO L158 Benchmark]: CACSL2BoogieTranslator took 445.80ms. Allocated memory is still 148.9MB. Free memory was 106.0MB in the beginning and 92.1MB in the end (delta: 13.9MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-11-23 15:23:19,147 INFO L158 Benchmark]: Boogie Procedure Inliner took 61.15ms. Allocated memory is still 148.9MB. Free memory was 92.1MB in the beginning and 90.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-23 15:23:19,147 INFO L158 Benchmark]: Boogie Preprocessor took 82.17ms. Allocated memory is still 148.9MB. Free memory was 89.6MB in the beginning and 87.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-23 15:23:19,148 INFO L158 Benchmark]: RCFGBuilder took 944.86ms. Allocated memory is still 148.9MB. Free memory was 87.5MB in the beginning and 93.0MB in the end (delta: -5.5MB). Peak memory consumption was 14.2MB. Max. memory is 16.1GB. [2022-11-23 15:23:19,148 INFO L158 Benchmark]: TraceAbstraction took 863.85ms. Allocated memory is still 148.9MB. Free memory was 92.3MB in the beginning and 112.0MB in the end (delta: -19.7MB). Peak memory consumption was 34.6MB. Max. memory is 16.1GB. [2022-11-23 15:23:19,149 INFO L158 Benchmark]: Witness Printer took 8.29ms. Allocated memory is still 148.9MB. Free memory is still 112.0MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 15:23:19,151 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 109.1MB. Free memory is still 83.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 445.80ms. Allocated memory is still 148.9MB. Free memory was 106.0MB in the beginning and 92.1MB in the end (delta: 13.9MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 61.15ms. Allocated memory is still 148.9MB. Free memory was 92.1MB in the beginning and 90.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 82.17ms. Allocated memory is still 148.9MB. Free memory was 89.6MB in the beginning and 87.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 944.86ms. Allocated memory is still 148.9MB. Free memory was 87.5MB in the beginning and 93.0MB in the end (delta: -5.5MB). Peak memory consumption was 14.2MB. Max. memory is 16.1GB. * TraceAbstraction took 863.85ms. Allocated memory is still 148.9MB. Free memory was 92.3MB in the beginning and 112.0MB in the end (delta: -19.7MB). Peak memory consumption was 34.6MB. Max. memory is 16.1GB. * Witness Printer took 8.29ms. Allocated memory is still 148.9MB. Free memory is still 112.0MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * 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: 236]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryArithmeticFLOAToperation at line 120, overapproximation of bitwiseAnd at line 220. Possible FailurePath: [L14] static const float one_sqrt = 1.0, tiny_sqrt = 1.0e-30; [L231] float x = __VERIFIER_nondet_float(); [L232] float y = -1.0f / 0.0f; [L233] 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 [a=251658242, b=251658242, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, unknown-#in~x-unknown=251658242, unknown-#in~y-unknown=251658242, x=251658242, y=251658242] [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 [a=251658242, b=251658242, ha=251658241, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, unknown-#in~x-unknown=251658242, unknown-#in~y-unknown=251658242, x=251658242, y=251658242] [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 FALSE !(hb > ha) [L106] a = x [L107] b = y VAL [a=251658242, b=251658242, ha=251658241, hb=0, j=0, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, unknown-#in~x-unknown=251658242, unknown-#in~y-unknown=251658242, x=251658242, y=251658242] [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 [a=251658244, b=251658245, ha=251658241, hb=0, j=0, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, unknown-#in~x-unknown=251658242, unknown-#in~y-unknown=251658242, x=251658242, y=251658242] [L233] RET, EXPR __ieee754_hypotf(x, y) [L233] float res = __ieee754_hypotf(x, y); [L235] CALL, EXPR isinf_float(res) [L214] __int32_t ix; VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, unknown-#in~x-unknown=251658243, x=251658243] [L216] ieee_float_shape_type gf_u; [L217] gf_u.value = (x) [L218] EXPR gf_u.word [L218] (ix) = gf_u.word [L220] ix &= 0x7fffffff [L221] return ((ix) == 0x7f800000L); [L235] RET, EXPR isinf_float(res) [L235] COND TRUE !isinf_float(res) [L236] reach_error() VAL [one_sqrt=1, res=251658243, tiny_sqrt=1/1000000000000000000000000000000, x=251658242, y=251658242] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 72 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.8s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 76 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 10 IncrementalHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 76 mSDtfsCounter, 10 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=72occurred 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, 31 NumberOfCodeBlocks, 31 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 12 ConstructedInterpolants, 0 QuantifiedInterpolants, 12 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 [2022-11-23 15:23:19,188 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82e9e310-2976-4925-9eda-13d2552b75c0/bin/utaipan-Q6hlc19bkW/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_82e9e310-2976-4925-9eda-13d2552b75c0/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82e9e310-2976-4925-9eda-13d2552b75c0/bin/utaipan-Q6hlc19bkW/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82e9e310-2976-4925-9eda-13d2552b75c0/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82e9e310-2976-4925-9eda-13d2552b75c0/bin/utaipan-Q6hlc19bkW/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1270d.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82e9e310-2976-4925-9eda-13d2552b75c0/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82e9e310-2976-4925-9eda-13d2552b75c0/bin/utaipan-Q6hlc19bkW --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 38626a16356f67aaf09cedb2585feb986fe72ed23b75358e37f00f94c56ef8f0 --- 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-4e7fbc6 [2022-11-23 15:23:21,656 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 15:23:21,658 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 15:23:21,690 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 15:23:21,691 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 15:23:21,693 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 15:23:21,695 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 15:23:21,702 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 15:23:21,707 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 15:23:21,708 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 15:23:21,710 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 15:23:21,711 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 15:23:21,714 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 15:23:21,717 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 15:23:21,719 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 15:23:21,722 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 15:23:21,724 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 15:23:21,731 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 15:23:21,733 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 15:23:21,735 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 15:23:21,738 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 15:23:21,744 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 15:23:21,745 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 15:23:21,746 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 15:23:21,750 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 15:23:21,756 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 15:23:21,757 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 15:23:21,758 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 15:23:21,758 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 15:23:21,759 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 15:23:21,760 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 15:23:21,761 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 15:23:21,763 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 15:23:21,764 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 15:23:21,775 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 15:23:21,775 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 15:23:21,776 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 15:23:21,780 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 15:23:21,780 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 15:23:21,781 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 15:23:21,782 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 15:23:21,783 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82e9e310-2976-4925-9eda-13d2552b75c0/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2022-11-23 15:23:21,824 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 15:23:21,824 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 15:23:21,825 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 15:23:21,825 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 15:23:21,826 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 15:23:21,826 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 15:23:21,826 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 15:23:21,826 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 15:23:21,827 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 15:23:21,827 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 15:23:21,827 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 15:23:21,827 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 15:23:21,828 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 15:23:21,828 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-23 15:23:21,829 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-23 15:23:21,829 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 15:23:21,829 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 15:23:21,829 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 15:23:21,830 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 15:23:21,830 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-23 15:23:21,830 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-23 15:23:21,830 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-23 15:23:21,830 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-23 15:23:21,831 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 15:23:21,831 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 15:23:21,831 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 15:23:21,831 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 15:23:21,832 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-23 15:23:21,832 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 15:23:21,832 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 15:23:21,832 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 15:23:21,833 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 15:23:21,833 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 15:23:21,833 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-23 15:23:21,833 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-23 15:23:21,833 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 15:23:21,834 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 15:23:21,834 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-23 15:23:21,834 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_82e9e310-2976-4925-9eda-13d2552b75c0/bin/utaipan-Q6hlc19bkW/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82e9e310-2976-4925-9eda-13d2552b75c0/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 38626a16356f67aaf09cedb2585feb986fe72ed23b75358e37f00f94c56ef8f0 [2022-11-23 15:23:22,266 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 15:23:22,297 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 15:23:22,301 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 15:23:22,302 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 15:23:22,303 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 15:23:22,304 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82e9e310-2976-4925-9eda-13d2552b75c0/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/float-newlib/float_req_bl_1270d.c [2022-11-23 15:23:25,567 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 15:23:25,829 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 15:23:25,829 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82e9e310-2976-4925-9eda-13d2552b75c0/sv-benchmarks/c/float-newlib/float_req_bl_1270d.c [2022-11-23 15:23:25,842 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82e9e310-2976-4925-9eda-13d2552b75c0/bin/utaipan-Q6hlc19bkW/data/61f47463c/53026dced6d54c1cb52df90add5f8e89/FLAG686916a7d [2022-11-23 15:23:25,868 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82e9e310-2976-4925-9eda-13d2552b75c0/bin/utaipan-Q6hlc19bkW/data/61f47463c/53026dced6d54c1cb52df90add5f8e89 [2022-11-23 15:23:25,870 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 15:23:25,872 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 15:23:25,873 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 15:23:25,874 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 15:23:25,877 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 15:23:25,878 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:23:25" (1/1) ... [2022-11-23 15:23:25,879 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5bba507d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:23:25, skipping insertion in model container [2022-11-23 15:23:25,879 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:23:25" (1/1) ... [2022-11-23 15:23:25,887 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 15:23:25,909 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 15:23:26,165 WARN L237 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_82e9e310-2976-4925-9eda-13d2552b75c0/sv-benchmarks/c/float-newlib/float_req_bl_1270d.c[4704,4717] [2022-11-23 15:23:26,176 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 15:23:26,190 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 15:23:26,256 WARN L237 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_82e9e310-2976-4925-9eda-13d2552b75c0/sv-benchmarks/c/float-newlib/float_req_bl_1270d.c[4704,4717] [2022-11-23 15:23:26,257 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 15:23:26,272 INFO L208 MainTranslator]: Completed translation [2022-11-23 15:23:26,273 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:23:26 WrapperNode [2022-11-23 15:23:26,273 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 15:23:26,274 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 15:23:26,274 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 15:23:26,275 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 15:23:26,282 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:23:26" (1/1) ... [2022-11-23 15:23:26,303 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:23:26" (1/1) ... [2022-11-23 15:23:26,326 INFO L138 Inliner]: procedures = 21, calls = 75, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 254 [2022-11-23 15:23:26,327 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 15:23:26,328 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 15:23:26,328 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 15:23:26,328 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 15:23:26,337 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:23:26" (1/1) ... [2022-11-23 15:23:26,338 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:23:26" (1/1) ... [2022-11-23 15:23:26,343 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:23:26" (1/1) ... [2022-11-23 15:23:26,344 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:23:26" (1/1) ... [2022-11-23 15:23:26,369 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:23:26" (1/1) ... [2022-11-23 15:23:26,379 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:23:26" (1/1) ... [2022-11-23 15:23:26,393 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:23:26" (1/1) ... [2022-11-23 15:23:26,395 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:23:26" (1/1) ... [2022-11-23 15:23:26,399 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 15:23:26,400 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 15:23:26,400 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 15:23:26,400 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 15:23:26,401 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:23:26" (1/1) ... [2022-11-23 15:23:26,410 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 15:23:26,429 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82e9e310-2976-4925-9eda-13d2552b75c0/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:23:26,441 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82e9e310-2976-4925-9eda-13d2552b75c0/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 15:23:26,457 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82e9e310-2976-4925-9eda-13d2552b75c0/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 15:23:26,497 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 15:23:26,497 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-23 15:23:26,497 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-23 15:23:26,497 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2022-11-23 15:23:26,497 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-23 15:23:26,498 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 15:23:26,498 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 15:23:26,498 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2022-11-23 15:23:26,498 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-23 15:23:26,498 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-23 15:23:26,498 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_sqrtf [2022-11-23 15:23:26,498 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_sqrtf [2022-11-23 15:23:26,596 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 15:23:26,598 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 15:23:29,216 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 15:23:29,222 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 15:23:29,223 INFO L300 CfgBuilder]: Removed 34 assume(true) statements. [2022-11-23 15:23:29,225 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:23:29 BoogieIcfgContainer [2022-11-23 15:23:29,225 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 15:23:29,228 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 15:23:29,228 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 15:23:29,231 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 15:23:29,231 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:23:25" (1/3) ... [2022-11-23 15:23:29,256 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fcf937d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:23:29, skipping insertion in model container [2022-11-23 15:23:29,257 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:23:26" (2/3) ... [2022-11-23 15:23:29,257 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fcf937d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:23:29, skipping insertion in model container [2022-11-23 15:23:29,257 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:23:29" (3/3) ... [2022-11-23 15:23:29,259 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_1270d.c [2022-11-23 15:23:29,279 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 15:23:29,279 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-23 15:23:29,337 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 15:23:29,347 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;@35ababf0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 15:23:29,348 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-23 15:23:29,352 INFO L276 IsEmpty]: Start isEmpty. Operand has 89 states, 84 states have (on average 1.6904761904761905) internal successors, (142), 85 states have internal predecessors, (142), 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) [2022-11-23 15:23:29,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-23 15:23:29,360 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:23:29,361 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:23:29,362 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:23:29,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:23:29,370 INFO L85 PathProgramCache]: Analyzing trace with hash -1724151004, now seen corresponding path program 1 times [2022-11-23 15:23:29,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 15:23:29,384 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [318418641] [2022-11-23 15:23:29,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:23:29,385 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 [2022-11-23 15:23:29,385 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82e9e310-2976-4925-9eda-13d2552b75c0/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 15:23:29,391 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82e9e310-2976-4925-9eda-13d2552b75c0/bin/utaipan-Q6hlc19bkW/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) [2022-11-23 15:23:29,404 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82e9e310-2976-4925-9eda-13d2552b75c0/bin/utaipan-Q6hlc19bkW/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 [2022-11-23 15:23:29,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:23:29,593 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-23 15:23:29,598 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:23:29,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:23:29,619 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 15:23:29,620 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 15:23:29,621 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [318418641] [2022-11-23 15:23:29,621 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [318418641] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:23:29,621 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:23:29,622 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 15:23:29,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006956989] [2022-11-23 15:23:29,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:23:29,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-23 15:23:29,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 15:23:29,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-23 15:23:29,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-23 15:23:29,660 INFO L87 Difference]: Start difference. First operand has 89 states, 84 states have (on average 1.6904761904761905) internal successors, (142), 85 states have internal predecessors, (142), 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 8.0) internal successors, (16), 2 states have internal predecessors, (16), 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) [2022-11-23 15:23:29,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:23:29,694 INFO L93 Difference]: Finished difference Result 176 states and 292 transitions. [2022-11-23 15:23:29,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-23 15:23:29,696 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 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 16 [2022-11-23 15:23:29,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:23:29,705 INFO L225 Difference]: With dead ends: 176 [2022-11-23 15:23:29,705 INFO L226 Difference]: Without dead ends: 86 [2022-11-23 15:23:29,709 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-23 15:23:29,712 INFO L413 NwaCegarLoop]: 111 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, 111 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 [2022-11-23 15:23:29,713 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 15:23:29,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2022-11-23 15:23:29,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2022-11-23 15:23:29,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 82 states have (on average 1.2682926829268293) internal successors, (104), 82 states have internal predecessors, (104), 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) [2022-11-23 15:23:29,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 108 transitions. [2022-11-23 15:23:29,757 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 108 transitions. Word has length 16 [2022-11-23 15:23:29,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:23:29,758 INFO L495 AbstractCegarLoop]: Abstraction has 86 states and 108 transitions. [2022-11-23 15:23:29,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 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) [2022-11-23 15:23:29,759 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 108 transitions. [2022-11-23 15:23:29,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-23 15:23:29,760 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:23:29,760 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] [2022-11-23 15:23:29,780 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82e9e310-2976-4925-9eda-13d2552b75c0/bin/utaipan-Q6hlc19bkW/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 [2022-11-23 15:23:29,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82e9e310-2976-4925-9eda-13d2552b75c0/bin/utaipan-Q6hlc19bkW/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 [2022-11-23 15:23:29,975 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:23:29,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:23:29,976 INFO L85 PathProgramCache]: Analyzing trace with hash -927967701, now seen corresponding path program 1 times [2022-11-23 15:23:29,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 15:23:29,977 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [390018026] [2022-11-23 15:23:29,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:23:29,978 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 [2022-11-23 15:23:29,978 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82e9e310-2976-4925-9eda-13d2552b75c0/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 15:23:29,979 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82e9e310-2976-4925-9eda-13d2552b75c0/bin/utaipan-Q6hlc19bkW/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) [2022-11-23 15:23:30,008 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82e9e310-2976-4925-9eda-13d2552b75c0/bin/utaipan-Q6hlc19bkW/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 [2022-11-23 15:23:30,166 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82e9e310-2976-4925-9eda-13d2552b75c0/bin/utaipan-Q6hlc19bkW/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 [2022-11-23 15:23:30,365 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82e9e310-2976-4925-9eda-13d2552b75c0/bin/utaipan-Q6hlc19bkW/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 [2022-11-23 15:23:30,366 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_82e9e310-2976-4925-9eda-13d2552b75c0/bin/utaipan-Q6hlc19bkW/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_82e9e310-2976-4925-9eda-13d2552b75c0/bin/utaipan-Q6hlc19bkW/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 [2022-11-23 15:23:30,370 INFO L158 Benchmark]: Toolchain (without parser) took 4497.29ms. Allocated memory was 79.7MB in the beginning and 117.4MB in the end (delta: 37.7MB). Free memory was 57.7MB in the beginning and 67.0MB in the end (delta: -9.3MB). Peak memory consumption was 29.2MB. Max. memory is 16.1GB. [2022-11-23 15:23:30,370 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 79.7MB. Free memory is still 57.2MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 15:23:30,371 INFO L158 Benchmark]: CACSL2BoogieTranslator took 399.96ms. Allocated memory is still 79.7MB. Free memory was 57.5MB in the beginning and 43.0MB in the end (delta: 14.5MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-11-23 15:23:30,371 INFO L158 Benchmark]: Boogie Procedure Inliner took 52.97ms. Allocated memory is still 79.7MB. Free memory was 43.0MB in the beginning and 40.7MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-23 15:23:30,372 INFO L158 Benchmark]: Boogie Preprocessor took 70.99ms. Allocated memory is still 79.7MB. Free memory was 40.7MB in the beginning and 37.9MB in the end (delta: 2.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-23 15:23:30,372 INFO L158 Benchmark]: RCFGBuilder took 2825.84ms. Allocated memory is still 79.7MB. Free memory was 37.9MB in the beginning and 35.2MB in the end (delta: 2.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-23 15:23:30,373 INFO L158 Benchmark]: TraceAbstraction took 1141.04ms. Allocated memory was 79.7MB in the beginning and 117.4MB in the end (delta: 37.7MB). Free memory was 34.6MB in the beginning and 67.0MB in the end (delta: -32.4MB). Peak memory consumption was 6.1MB. Max. memory is 16.1GB. [2022-11-23 15:23:30,376 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 79.7MB. Free memory is still 57.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 399.96ms. Allocated memory is still 79.7MB. Free memory was 57.5MB in the beginning and 43.0MB in the end (delta: 14.5MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 52.97ms. Allocated memory is still 79.7MB. Free memory was 43.0MB in the beginning and 40.7MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 70.99ms. Allocated memory is still 79.7MB. Free memory was 40.7MB in the beginning and 37.9MB in the end (delta: 2.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 2825.84ms. Allocated memory is still 79.7MB. Free memory was 37.9MB in the beginning and 35.2MB in the end (delta: 2.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * TraceAbstraction took 1141.04ms. Allocated memory was 79.7MB in the beginning and 117.4MB in the end (delta: 37.7MB). Free memory was 34.6MB in the beginning and 67.0MB in the end (delta: -32.4MB). Peak memory consumption was 6.1MB. 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_82e9e310-2976-4925-9eda-13d2552b75c0/bin/utaipan-Q6hlc19bkW/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_82e9e310-2976-4925-9eda-13d2552b75c0/bin/utaipan-Q6hlc19bkW/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. [2022-11-23 15:23:30,432 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82e9e310-2976-4925-9eda-13d2552b75c0/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: AssertionError: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82e9e310-2976-4925-9eda-13d2552b75c0/bin/utaipan-Q6hlc19bkW/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.