./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_1052c.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_116270cb-dfb2-4b09-9e9a-dbcf335fa88a/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_116270cb-dfb2-4b09-9e9a-dbcf335fa88a/bin/utaipan-I9t0OCRTmS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_116270cb-dfb2-4b09-9e9a-dbcf335fa88a/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_116270cb-dfb2-4b09-9e9a-dbcf335fa88a/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1052c.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_116270cb-dfb2-4b09-9e9a-dbcf335fa88a/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_116270cb-dfb2-4b09-9e9a-dbcf335fa88a/bin/utaipan-I9t0OCRTmS --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash fe40b084b828df43825fca15d2dd06822fb39893b54cde36c5f06a988fda4d8b --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-19 06:52:34,293 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 06:52:34,295 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 06:52:34,336 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 06:52:34,336 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 06:52:34,337 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 06:52:34,339 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 06:52:34,340 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 06:52:34,342 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 06:52:34,343 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 06:52:34,344 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 06:52:34,345 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 06:52:34,345 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 06:52:34,346 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 06:52:34,347 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 06:52:34,349 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 06:52:34,349 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 06:52:34,350 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 06:52:34,354 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 06:52:34,356 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 06:52:34,357 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 06:52:34,363 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 06:52:34,364 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 06:52:34,364 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 06:52:34,368 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 06:52:34,368 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 06:52:34,368 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 06:52:34,369 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 06:52:34,370 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 06:52:34,378 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 06:52:34,378 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 06:52:34,379 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 06:52:34,381 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 06:52:34,382 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 06:52:34,384 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 06:52:34,384 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 06:52:34,386 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 06:52:34,386 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 06:52:34,387 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 06:52:34,388 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 06:52:34,388 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 06:52:34,389 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_116270cb-dfb2-4b09-9e9a-dbcf335fa88a/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-19 06:52:34,429 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 06:52:34,429 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 06:52:34,430 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 06:52:34,430 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 06:52:34,431 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 06:52:34,432 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 06:52:34,432 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 06:52:34,432 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 06:52:34,433 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 06:52:34,433 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 06:52:34,434 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 06:52:34,434 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 06:52:34,434 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 06:52:34,435 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 06:52:34,435 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 06:52:34,435 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 06:52:34,436 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 06:52:34,436 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 06:52:34,437 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 06:52:34,437 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-19 06:52:34,437 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 06:52:34,437 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-19 06:52:34,438 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 06:52:34,438 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 06:52:34,438 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 06:52:34,438 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 06:52:34,438 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-19 06:52:34,439 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 06:52:34,439 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 06:52:34,439 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 06:52:34,440 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 06:52:34,440 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 06:52:34,440 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 06:52:34,441 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 06:52:34,441 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 06:52:34,441 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 06:52:34,441 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 06:52:34,442 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 06:52:34,442 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 06:52:34,442 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 06:52:34,442 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 06:52:34,442 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_116270cb-dfb2-4b09-9e9a-dbcf335fa88a/bin/utaipan-I9t0OCRTmS/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_116270cb-dfb2-4b09-9e9a-dbcf335fa88a/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fe40b084b828df43825fca15d2dd06822fb39893b54cde36c5f06a988fda4d8b [2022-11-19 06:52:34,772 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 06:52:34,807 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 06:52:34,810 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 06:52:34,811 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 06:52:34,812 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 06:52:34,814 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_116270cb-dfb2-4b09-9e9a-dbcf335fa88a/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/float-newlib/float_req_bl_1052c.c [2022-11-19 06:52:34,890 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_116270cb-dfb2-4b09-9e9a-dbcf335fa88a/bin/utaipan-I9t0OCRTmS/data/2894b73ea/25a88aadb0064a8987555a5adc96158a/FLAG1fd3b9d7f [2022-11-19 06:52:35,389 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 06:52:35,389 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_116270cb-dfb2-4b09-9e9a-dbcf335fa88a/sv-benchmarks/c/float-newlib/float_req_bl_1052c.c [2022-11-19 06:52:35,402 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_116270cb-dfb2-4b09-9e9a-dbcf335fa88a/bin/utaipan-I9t0OCRTmS/data/2894b73ea/25a88aadb0064a8987555a5adc96158a/FLAG1fd3b9d7f [2022-11-19 06:52:35,739 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_116270cb-dfb2-4b09-9e9a-dbcf335fa88a/bin/utaipan-I9t0OCRTmS/data/2894b73ea/25a88aadb0064a8987555a5adc96158a [2022-11-19 06:52:35,744 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 06:52:35,747 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 06:52:35,753 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 06:52:35,753 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 06:52:35,757 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 06:52:35,758 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 06:52:35" (1/1) ... [2022-11-19 06:52:35,760 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@710cff2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:52:35, skipping insertion in model container [2022-11-19 06:52:35,761 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 06:52:35" (1/1) ... [2022-11-19 06:52:35,770 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 06:52:35,791 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 06:52:36,063 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_116270cb-dfb2-4b09-9e9a-dbcf335fa88a/sv-benchmarks/c/float-newlib/float_req_bl_1052c.c[1741,1754] [2022-11-19 06:52:36,067 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 06:52:36,075 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 06:52:36,105 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_116270cb-dfb2-4b09-9e9a-dbcf335fa88a/sv-benchmarks/c/float-newlib/float_req_bl_1052c.c[1741,1754] [2022-11-19 06:52:36,106 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 06:52:36,121 INFO L208 MainTranslator]: Completed translation [2022-11-19 06:52:36,122 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:52:36 WrapperNode [2022-11-19 06:52:36,122 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 06:52:36,123 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 06:52:36,123 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 06:52:36,124 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 06:52:36,132 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:52:36" (1/1) ... [2022-11-19 06:52:36,151 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:52:36" (1/1) ... [2022-11-19 06:52:36,173 INFO L138 Inliner]: procedures = 16, calls = 21, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 96 [2022-11-19 06:52:36,174 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 06:52:36,174 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 06:52:36,175 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 06:52:36,175 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 06:52:36,185 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:52:36" (1/1) ... [2022-11-19 06:52:36,186 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:52:36" (1/1) ... [2022-11-19 06:52:36,190 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:52:36" (1/1) ... [2022-11-19 06:52:36,192 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:52:36" (1/1) ... [2022-11-19 06:52:36,199 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:52:36" (1/1) ... [2022-11-19 06:52:36,215 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:52:36" (1/1) ... [2022-11-19 06:52:36,216 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:52:36" (1/1) ... [2022-11-19 06:52:36,218 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:52:36" (1/1) ... [2022-11-19 06:52:36,220 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 06:52:36,221 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 06:52:36,221 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 06:52:36,222 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 06:52:36,223 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:52:36" (1/1) ... [2022-11-19 06:52:36,230 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 06:52:36,241 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_116270cb-dfb2-4b09-9e9a-dbcf335fa88a/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:52:36,254 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_116270cb-dfb2-4b09-9e9a-dbcf335fa88a/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 06:52:36,284 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_116270cb-dfb2-4b09-9e9a-dbcf335fa88a/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 06:52:36,306 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 06:52:36,306 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-19 06:52:36,306 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-19 06:52:36,306 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2022-11-19 06:52:36,306 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-19 06:52:36,307 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2022-11-19 06:52:36,307 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 06:52:36,307 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 06:52:36,307 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-19 06:52:36,307 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-19 06:52:36,391 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 06:52:36,393 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 06:52:36,586 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 06:52:36,710 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 06:52:36,711 INFO L300 CfgBuilder]: Removed 6 assume(true) statements. [2022-11-19 06:52:36,713 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:52:36 BoogieIcfgContainer [2022-11-19 06:52:36,713 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 06:52:36,715 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 06:52:36,715 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 06:52:36,727 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 06:52:36,727 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 06:52:35" (1/3) ... [2022-11-19 06:52:36,728 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65e72ad2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 06:52:36, skipping insertion in model container [2022-11-19 06:52:36,728 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:52:36" (2/3) ... [2022-11-19 06:52:36,728 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65e72ad2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 06:52:36, skipping insertion in model container [2022-11-19 06:52:36,728 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:52:36" (3/3) ... [2022-11-19 06:52:36,730 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_1052c.c [2022-11-19 06:52:36,748 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 06:52:36,748 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-19 06:52:36,814 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 06:52:36,823 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;@761c8182, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 06:52:36,824 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-19 06:52:36,828 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 18 states have (on average 1.6666666666666667) internal successors, (30), 19 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:52:36,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-19 06:52:36,835 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:52:36,836 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:52:36,837 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:52:36,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:52:36,844 INFO L85 PathProgramCache]: Analyzing trace with hash 1053820573, now seen corresponding path program 1 times [2022-11-19 06:52:36,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:52:36,854 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556270031] [2022-11-19 06:52:36,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:52:36,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:52:36,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:52:37,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:52:37,045 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:52:37,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556270031] [2022-11-19 06:52:37,047 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [556270031] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:52:37,047 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:52:37,047 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 06:52:37,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190471469] [2022-11-19 06:52:37,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:52:37,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-19 06:52:37,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:52:37,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-19 06:52:37,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-19 06:52:37,101 INFO L87 Difference]: Start difference. First operand has 20 states, 18 states have (on average 1.6666666666666667) internal successors, (30), 19 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:52:37,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:52:37,150 INFO L93 Difference]: Finished difference Result 39 states and 59 transitions. [2022-11-19 06:52:37,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-19 06:52:37,153 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-19 06:52:37,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:52:37,161 INFO L225 Difference]: With dead ends: 39 [2022-11-19 06:52:37,161 INFO L226 Difference]: Without dead ends: 18 [2022-11-19 06:52:37,164 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 [2022-11-19 06:52:37,168 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 06:52:37,169 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 17 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 06:52:37,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2022-11-19 06:52:37,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2022-11-19 06:52:37,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 17 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:52:37,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 21 transitions. [2022-11-19 06:52:37,196 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 21 transitions. Word has length 8 [2022-11-19 06:52:37,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:52:37,198 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 21 transitions. [2022-11-19 06:52:37,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:52:37,199 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 21 transitions. [2022-11-19 06:52:37,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-19 06:52:37,200 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:52:37,200 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:52:37,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-19 06:52:37,201 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:52:37,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:52:37,202 INFO L85 PathProgramCache]: Analyzing trace with hash 121214260, now seen corresponding path program 1 times [2022-11-19 06:52:37,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:52:37,202 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549673856] [2022-11-19 06:52:37,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:52:37,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:52:37,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-19 06:52:37,267 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-19 06:52:37,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-19 06:52:37,333 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-19 06:52:37,334 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-19 06:52:37,335 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-19 06:52:37,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-19 06:52:37,341 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1] [2022-11-19 06:52:37,344 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-19 06:52:37,375 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 06:52:37 BoogieIcfgContainer [2022-11-19 06:52:37,375 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-19 06:52:37,376 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-19 06:52:37,376 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-19 06:52:37,376 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-19 06:52:37,376 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:52:36" (3/4) ... [2022-11-19 06:52:37,379 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-19 06:52:37,380 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-19 06:52:37,380 INFO L158 Benchmark]: Toolchain (without parser) took 1633.52ms. Allocated memory is still 119.5MB. Free memory was 79.2MB in the beginning and 93.7MB in the end (delta: -14.5MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-19 06:52:37,381 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 119.5MB. Free memory is still 95.8MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-19 06:52:37,381 INFO L158 Benchmark]: CACSL2BoogieTranslator took 369.66ms. Allocated memory is still 119.5MB. Free memory was 79.0MB in the beginning and 93.7MB in the end (delta: -14.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-19 06:52:37,382 INFO L158 Benchmark]: Boogie Procedure Inliner took 50.57ms. Allocated memory is still 119.5MB. Free memory was 93.7MB in the beginning and 92.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-19 06:52:37,383 INFO L158 Benchmark]: Boogie Preprocessor took 46.13ms. Allocated memory is still 119.5MB. Free memory was 92.1MB in the beginning and 90.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-19 06:52:37,383 INFO L158 Benchmark]: RCFGBuilder took 491.95ms. Allocated memory is still 119.5MB. Free memory was 90.5MB in the beginning and 72.1MB in the end (delta: 18.4MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-11-19 06:52:37,384 INFO L158 Benchmark]: TraceAbstraction took 659.92ms. Allocated memory is still 119.5MB. Free memory was 71.7MB in the beginning and 93.7MB in the end (delta: -22.0MB). Peak memory consumption was 32.1MB. Max. memory is 16.1GB. [2022-11-19 06:52:37,384 INFO L158 Benchmark]: Witness Printer took 4.26ms. Allocated memory is still 119.5MB. Free memory is still 93.7MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-19 06:52:37,387 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 119.5MB. Free memory is still 95.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 369.66ms. Allocated memory is still 119.5MB. Free memory was 79.0MB in the beginning and 93.7MB in the end (delta: -14.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 50.57ms. Allocated memory is still 119.5MB. Free memory was 93.7MB in the beginning and 92.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 46.13ms. Allocated memory is still 119.5MB. Free memory was 92.1MB in the beginning and 90.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 491.95ms. Allocated memory is still 119.5MB. Free memory was 90.5MB in the beginning and 72.1MB in the end (delta: 18.4MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 659.92ms. Allocated memory is still 119.5MB. Free memory was 71.7MB in the beginning and 93.7MB in the end (delta: -22.0MB). Peak memory consumption was 32.1MB. Max. memory is 16.1GB. * Witness Printer took 4.26ms. Allocated memory is still 119.5MB. Free memory is still 93.7MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 82]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 81, overapproximation of bitwiseAnd at line 23, overapproximation of someUnaryFLOAToperation at line 77, overapproximation of someBinaryArithmeticFLOAToperation at line 46. Possible FailurePath: [L13] static const float huge_floor = 1.0e30; [L77] float x = -0.0f; [L78] CALL, EXPR floor_float(x) [L16] __int32_t i0, j0; [L17] __uint32_t i, ix; VAL [\old(x)=1000000000000000000000000000008, huge_floor=1000000000000000000000000000000, x=1000000000000000000000000000008] [L19] ieee_float_shape_type gf_u; [L20] gf_u.value = (x) [L21] EXPR gf_u.word [L21] (i0) = gf_u.word [L23] ix = (i0 & 0x7fffffff) [L24] j0 = (ix >> 23) - 0x7f VAL [\old(x)=1000000000000000000000000000008, huge_floor=1000000000000000000000000000000, i=-18014398509481984, i0=6, j0=2147483521, x=1000000000000000000000000000008] [L25] COND FALSE !(j0 < 23) [L45] COND FALSE !(!((ix) < 0x7f800000L)) [L48] return x; VAL [\old(x)=1000000000000000000000000000008, \result=1000000000000000000000000000008, huge_floor=1000000000000000000000000000000, i=-18014398509481984, i0=6, j0=2147483521, x=1000000000000000000000000000008] [L78] RET, EXPR floor_float(x) [L78] float res = floor_float(x); [L81] EXPR res == -0.0f && __signbit_float(res) == 1 VAL [huge_floor=1000000000000000000000000000000, res=1000000000000000000000000000008, res == -0.0f && __signbit_float(res) == 1=0, x=1000000000000000000000000000008] [L81] COND TRUE !(res == -0.0f && __signbit_float(res) == 1) [L82] reach_error() VAL [huge_floor=1000000000000000000000000000000, res=1000000000000000000000000000008, x=1000000000000000000000000000008] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 20 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.5s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 17 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 6 IncrementalHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 17 mSDtfsCounter, 6 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=20occurred 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, 17 NumberOfCodeBlocks, 17 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 7 ConstructedInterpolants, 0 QuantifiedInterpolants, 7 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 [2022-11-19 06:52:37,420 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_116270cb-dfb2-4b09-9e9a-dbcf335fa88a/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_116270cb-dfb2-4b09-9e9a-dbcf335fa88a/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_116270cb-dfb2-4b09-9e9a-dbcf335fa88a/bin/utaipan-I9t0OCRTmS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_116270cb-dfb2-4b09-9e9a-dbcf335fa88a/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_116270cb-dfb2-4b09-9e9a-dbcf335fa88a/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1052c.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_116270cb-dfb2-4b09-9e9a-dbcf335fa88a/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_116270cb-dfb2-4b09-9e9a-dbcf335fa88a/bin/utaipan-I9t0OCRTmS --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash fe40b084b828df43825fca15d2dd06822fb39893b54cde36c5f06a988fda4d8b --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-19 06:52:39,774 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 06:52:39,776 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 06:52:39,812 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 06:52:39,812 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 06:52:39,818 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 06:52:39,821 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 06:52:39,823 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 06:52:39,824 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 06:52:39,825 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 06:52:39,826 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 06:52:39,827 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 06:52:39,828 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 06:52:39,829 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 06:52:39,830 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 06:52:39,836 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 06:52:39,839 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 06:52:39,844 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 06:52:39,850 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 06:52:39,854 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 06:52:39,856 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 06:52:39,859 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 06:52:39,860 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 06:52:39,861 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 06:52:39,864 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 06:52:39,865 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 06:52:39,865 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 06:52:39,866 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 06:52:39,866 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 06:52:39,871 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 06:52:39,872 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 06:52:39,873 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 06:52:39,875 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 06:52:39,876 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 06:52:39,877 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 06:52:39,877 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 06:52:39,878 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 06:52:39,878 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 06:52:39,879 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 06:52:39,881 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 06:52:39,883 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 06:52:39,884 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_116270cb-dfb2-4b09-9e9a-dbcf335fa88a/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2022-11-19 06:52:39,930 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 06:52:39,941 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 06:52:39,941 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 06:52:39,941 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 06:52:39,943 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 06:52:39,943 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 06:52:39,943 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 06:52:39,943 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 06:52:39,944 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 06:52:39,944 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 06:52:39,944 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 06:52:39,944 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 06:52:39,945 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 06:52:39,946 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-19 06:52:39,946 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-19 06:52:39,946 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 06:52:39,946 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 06:52:39,947 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 06:52:39,947 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 06:52:39,947 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-19 06:52:39,947 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-19 06:52:39,948 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-19 06:52:39,948 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-19 06:52:39,948 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 06:52:39,948 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 06:52:39,949 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 06:52:39,949 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 06:52:39,949 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-19 06:52:39,949 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 06:52:39,950 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 06:52:39,950 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 06:52:39,950 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 06:52:39,951 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 06:52:39,951 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-19 06:52:39,951 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-19 06:52:39,951 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 06:52:39,952 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 06:52:39,952 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-19 06:52:39,952 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_116270cb-dfb2-4b09-9e9a-dbcf335fa88a/bin/utaipan-I9t0OCRTmS/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_116270cb-dfb2-4b09-9e9a-dbcf335fa88a/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fe40b084b828df43825fca15d2dd06822fb39893b54cde36c5f06a988fda4d8b [2022-11-19 06:52:40,348 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 06:52:40,374 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 06:52:40,376 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 06:52:40,378 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 06:52:40,378 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 06:52:40,380 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_116270cb-dfb2-4b09-9e9a-dbcf335fa88a/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/float-newlib/float_req_bl_1052c.c [2022-11-19 06:52:40,464 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_116270cb-dfb2-4b09-9e9a-dbcf335fa88a/bin/utaipan-I9t0OCRTmS/data/1cdee216b/78a4f67a8fbe4abfa5a5dce18de8961b/FLAGc7f43bbeb [2022-11-19 06:52:41,024 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 06:52:41,025 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_116270cb-dfb2-4b09-9e9a-dbcf335fa88a/sv-benchmarks/c/float-newlib/float_req_bl_1052c.c [2022-11-19 06:52:41,033 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_116270cb-dfb2-4b09-9e9a-dbcf335fa88a/bin/utaipan-I9t0OCRTmS/data/1cdee216b/78a4f67a8fbe4abfa5a5dce18de8961b/FLAGc7f43bbeb [2022-11-19 06:52:41,381 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_116270cb-dfb2-4b09-9e9a-dbcf335fa88a/bin/utaipan-I9t0OCRTmS/data/1cdee216b/78a4f67a8fbe4abfa5a5dce18de8961b [2022-11-19 06:52:41,386 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 06:52:41,387 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 06:52:41,389 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 06:52:41,389 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 06:52:41,398 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 06:52:41,399 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 06:52:41" (1/1) ... [2022-11-19 06:52:41,400 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@13173109 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:52:41, skipping insertion in model container [2022-11-19 06:52:41,402 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 06:52:41" (1/1) ... [2022-11-19 06:52:41,409 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 06:52:41,424 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 06:52:41,615 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_116270cb-dfb2-4b09-9e9a-dbcf335fa88a/sv-benchmarks/c/float-newlib/float_req_bl_1052c.c[1741,1754] [2022-11-19 06:52:41,624 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 06:52:41,652 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 06:52:41,715 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_116270cb-dfb2-4b09-9e9a-dbcf335fa88a/sv-benchmarks/c/float-newlib/float_req_bl_1052c.c[1741,1754] [2022-11-19 06:52:41,716 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 06:52:41,731 INFO L208 MainTranslator]: Completed translation [2022-11-19 06:52:41,732 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:52:41 WrapperNode [2022-11-19 06:52:41,732 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 06:52:41,733 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 06:52:41,733 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 06:52:41,733 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 06:52:41,740 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:52:41" (1/1) ... [2022-11-19 06:52:41,760 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:52:41" (1/1) ... [2022-11-19 06:52:41,794 INFO L138 Inliner]: procedures = 19, calls = 21, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 96 [2022-11-19 06:52:41,795 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 06:52:41,796 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 06:52:41,796 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 06:52:41,796 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 06:52:41,806 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:52:41" (1/1) ... [2022-11-19 06:52:41,806 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:52:41" (1/1) ... [2022-11-19 06:52:41,820 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:52:41" (1/1) ... [2022-11-19 06:52:41,820 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:52:41" (1/1) ... [2022-11-19 06:52:41,834 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:52:41" (1/1) ... [2022-11-19 06:52:41,838 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:52:41" (1/1) ... [2022-11-19 06:52:41,850 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:52:41" (1/1) ... [2022-11-19 06:52:41,851 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:52:41" (1/1) ... [2022-11-19 06:52:41,854 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 06:52:41,855 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 06:52:41,855 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 06:52:41,855 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 06:52:41,856 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:52:41" (1/1) ... [2022-11-19 06:52:41,869 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 06:52:41,879 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_116270cb-dfb2-4b09-9e9a-dbcf335fa88a/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:52:41,893 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_116270cb-dfb2-4b09-9e9a-dbcf335fa88a/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 06:52:41,927 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_116270cb-dfb2-4b09-9e9a-dbcf335fa88a/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 06:52:41,941 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 06:52:41,941 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-19 06:52:41,942 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-19 06:52:41,942 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2022-11-19 06:52:41,942 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-19 06:52:41,942 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 06:52:41,942 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 06:52:41,943 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2022-11-19 06:52:41,943 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-19 06:52:41,943 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-19 06:52:42,027 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 06:52:42,029 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 06:52:42,619 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 06:52:42,624 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 06:52:42,625 INFO L300 CfgBuilder]: Removed 6 assume(true) statements. [2022-11-19 06:52:42,626 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:52:42 BoogieIcfgContainer [2022-11-19 06:52:42,628 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 06:52:42,633 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 06:52:42,633 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 06:52:42,637 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 06:52:42,637 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 06:52:41" (1/3) ... [2022-11-19 06:52:42,639 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@489f222d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 06:52:42, skipping insertion in model container [2022-11-19 06:52:42,639 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:52:41" (2/3) ... [2022-11-19 06:52:42,640 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@489f222d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 06:52:42, skipping insertion in model container [2022-11-19 06:52:42,640 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:52:42" (3/3) ... [2022-11-19 06:52:42,642 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_1052c.c [2022-11-19 06:52:42,687 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 06:52:42,687 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-19 06:52:42,765 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 06:52:42,775 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;@5a3aa1c0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 06:52:42,775 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-19 06:52:42,779 INFO L276 IsEmpty]: Start isEmpty. Operand has 30 states, 28 states have (on average 1.6428571428571428) internal successors, (46), 29 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:52:42,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-19 06:52:42,785 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:52:42,786 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:52:42,787 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:52:42,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:52:42,794 INFO L85 PathProgramCache]: Analyzing trace with hash -2022248449, now seen corresponding path program 1 times [2022-11-19 06:52:42,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 06:52:42,806 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1369814566] [2022-11-19 06:52:42,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:52:42,807 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 06:52:42,807 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_116270cb-dfb2-4b09-9e9a-dbcf335fa88a/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 06:52:42,815 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_116270cb-dfb2-4b09-9e9a-dbcf335fa88a/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 06:52:42,839 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_116270cb-dfb2-4b09-9e9a-dbcf335fa88a/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-19 06:52:42,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:52:42,974 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-19 06:52:42,977 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:52:42,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:52:42,999 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 06:52:43,000 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 06:52:43,000 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1369814566] [2022-11-19 06:52:43,002 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1369814566] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:52:43,002 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:52:43,002 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 06:52:43,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218307273] [2022-11-19 06:52:43,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:52:43,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-19 06:52:43,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 06:52:43,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-19 06:52:43,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-19 06:52:43,057 INFO L87 Difference]: Start difference. First operand has 30 states, 28 states have (on average 1.6428571428571428) internal successors, (46), 29 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:52:43,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:52:43,081 INFO L93 Difference]: Finished difference Result 58 states and 90 transitions. [2022-11-19 06:52:43,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-19 06:52:43,084 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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 10 [2022-11-19 06:52:43,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:52:43,094 INFO L225 Difference]: With dead ends: 58 [2022-11-19 06:52:43,095 INFO L226 Difference]: Without dead ends: 27 [2022-11-19 06:52:43,098 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-19 06:52:43,103 INFO L413 NwaCegarLoop]: 39 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, 39 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 06:52:43,105 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 06:52:43,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-11-19 06:52:43,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2022-11-19 06:52:43,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.3846153846153846) internal successors, (36), 26 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:52:43,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 36 transitions. [2022-11-19 06:52:43,143 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 36 transitions. Word has length 10 [2022-11-19 06:52:43,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:52:43,144 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 36 transitions. [2022-11-19 06:52:43,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:52:43,145 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 36 transitions. [2022-11-19 06:52:43,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-19 06:52:43,146 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:52:43,146 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:52:43,165 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_116270cb-dfb2-4b09-9e9a-dbcf335fa88a/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-19 06:52:43,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_116270cb-dfb2-4b09-9e9a-dbcf335fa88a/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 06:52:43,360 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:52:43,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:52:43,361 INFO L85 PathProgramCache]: Analyzing trace with hash -62588350, now seen corresponding path program 1 times [2022-11-19 06:52:43,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 06:52:43,362 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [911139797] [2022-11-19 06:52:43,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:52:43,362 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 06:52:43,362 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_116270cb-dfb2-4b09-9e9a-dbcf335fa88a/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 06:52:43,363 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_116270cb-dfb2-4b09-9e9a-dbcf335fa88a/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 06:52:43,368 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_116270cb-dfb2-4b09-9e9a-dbcf335fa88a/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-19 06:52:43,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:52:43,473 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-19 06:52:43,477 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:52:43,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:52:43,654 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 06:52:43,654 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 06:52:43,655 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [911139797] [2022-11-19 06:52:43,655 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [911139797] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:52:43,655 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:52:43,655 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 06:52:43,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508266823] [2022-11-19 06:52:43,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:52:43,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 06:52:43,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 06:52:43,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 06:52:43,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 06:52:43,659 INFO L87 Difference]: Start difference. First operand 27 states and 36 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:52:44,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:52:44,066 INFO L93 Difference]: Finished difference Result 36 states and 45 transitions. [2022-11-19 06:52:44,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 06:52:44,066 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 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 11 [2022-11-19 06:52:44,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:52:44,067 INFO L225 Difference]: With dead ends: 36 [2022-11-19 06:52:44,067 INFO L226 Difference]: Without dead ends: 26 [2022-11-19 06:52:44,068 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-19 06:52:44,069 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 4 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 6 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-19 06:52:44,070 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 96 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 6 Unchecked, 0.4s Time] [2022-11-19 06:52:44,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-11-19 06:52:44,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2022-11-19 06:52:44,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 25 states have (on average 1.32) internal successors, (33), 25 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:52:44,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 33 transitions. [2022-11-19 06:52:44,075 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 33 transitions. Word has length 11 [2022-11-19 06:52:44,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:52:44,075 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 33 transitions. [2022-11-19 06:52:44,075 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:52:44,076 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 33 transitions. [2022-11-19 06:52:44,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-19 06:52:44,076 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:52:44,076 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:52:44,094 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_116270cb-dfb2-4b09-9e9a-dbcf335fa88a/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-19 06:52:44,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_116270cb-dfb2-4b09-9e9a-dbcf335fa88a/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 06:52:44,277 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:52:44,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:52:44,278 INFO L85 PathProgramCache]: Analyzing trace with hash -1311186430, now seen corresponding path program 1 times [2022-11-19 06:52:44,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 06:52:44,279 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1085593998] [2022-11-19 06:52:44,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:52:44,279 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 06:52:44,279 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_116270cb-dfb2-4b09-9e9a-dbcf335fa88a/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 06:52:44,280 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_116270cb-dfb2-4b09-9e9a-dbcf335fa88a/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 06:52:44,289 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_116270cb-dfb2-4b09-9e9a-dbcf335fa88a/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-19 06:52:44,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:52:44,371 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-19 06:52:44,374 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:52:44,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:52:44,470 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 06:52:44,470 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 06:52:44,471 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1085593998] [2022-11-19 06:52:44,471 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1085593998] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:52:44,471 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:52:44,471 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 06:52:44,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102388170] [2022-11-19 06:52:44,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:52:44,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 06:52:44,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 06:52:44,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 06:52:44,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 06:52:44,474 INFO L87 Difference]: Start difference. First operand 26 states and 33 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:52:44,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:52:44,691 INFO L93 Difference]: Finished difference Result 38 states and 45 transitions. [2022-11-19 06:52:44,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 06:52:44,694 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-11-19 06:52:44,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:52:44,695 INFO L225 Difference]: With dead ends: 38 [2022-11-19 06:52:44,695 INFO L226 Difference]: Without dead ends: 22 [2022-11-19 06:52:44,696 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-19 06:52:44,697 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 4 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 4 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-19 06:52:44,697 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 71 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 4 Unchecked, 0.2s Time] [2022-11-19 06:52:44,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2022-11-19 06:52:44,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2022-11-19 06:52:44,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.1904761904761905) internal successors, (25), 21 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:52:44,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2022-11-19 06:52:44,701 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 12 [2022-11-19 06:52:44,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:52:44,701 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2022-11-19 06:52:44,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:52:44,719 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2022-11-19 06:52:44,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-19 06:52:44,722 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:52:44,723 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:52:44,744 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_116270cb-dfb2-4b09-9e9a-dbcf335fa88a/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-19 06:52:44,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_116270cb-dfb2-4b09-9e9a-dbcf335fa88a/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 06:52:44,940 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:52:44,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:52:44,940 INFO L85 PathProgramCache]: Analyzing trace with hash 1612307429, now seen corresponding path program 1 times [2022-11-19 06:52:44,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 06:52:44,941 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1770017017] [2022-11-19 06:52:44,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:52:44,941 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 06:52:44,941 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_116270cb-dfb2-4b09-9e9a-dbcf335fa88a/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 06:52:44,942 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_116270cb-dfb2-4b09-9e9a-dbcf335fa88a/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 06:52:44,944 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_116270cb-dfb2-4b09-9e9a-dbcf335fa88a/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-19 06:52:45,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_116270cb-dfb2-4b09-9e9a-dbcf335fa88a/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 06:52:45,064 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_116270cb-dfb2-4b09-9e9a-dbcf335fa88a/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5) 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_116270cb-dfb2-4b09-9e9a-dbcf335fa88a/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5) 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 [2022-11-19 06:52:45,065 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_116270cb-dfb2-4b09-9e9a-dbcf335fa88a/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 139 [2022-11-19 06:52:45,067 INFO L158 Benchmark]: Toolchain (without parser) took 3680.27ms. Allocated memory was 52.4MB in the beginning and 75.5MB in the end (delta: 23.1MB). Free memory was 29.6MB in the beginning and 53.2MB in the end (delta: -23.6MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-19 06:52:45,068 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 52.4MB. Free memory was 34.2MB in the beginning and 34.2MB in the end (delta: 46.3kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-19 06:52:45,068 INFO L158 Benchmark]: CACSL2BoogieTranslator took 343.37ms. Allocated memory was 52.4MB in the beginning and 75.5MB in the end (delta: 23.1MB). Free memory was 29.3MB in the beginning and 58.1MB in the end (delta: -28.8MB). Peak memory consumption was 9.6MB. Max. memory is 16.1GB. [2022-11-19 06:52:45,069 INFO L158 Benchmark]: Boogie Procedure Inliner took 61.98ms. Allocated memory is still 75.5MB. Free memory was 58.0MB in the beginning and 56.3MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-19 06:52:45,069 INFO L158 Benchmark]: Boogie Preprocessor took 58.76ms. Allocated memory is still 75.5MB. Free memory was 56.3MB in the beginning and 54.6MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-19 06:52:45,070 INFO L158 Benchmark]: RCFGBuilder took 773.42ms. Allocated memory is still 75.5MB. Free memory was 54.6MB in the beginning and 41.0MB in the end (delta: 13.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-11-19 06:52:45,070 INFO L158 Benchmark]: TraceAbstraction took 2434.27ms. Allocated memory is still 75.5MB. Free memory was 40.2MB in the beginning and 53.2MB in the end (delta: -13.0MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-19 06:52:45,073 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 52.4MB. Free memory was 34.2MB in the beginning and 34.2MB in the end (delta: 46.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 343.37ms. Allocated memory was 52.4MB in the beginning and 75.5MB in the end (delta: 23.1MB). Free memory was 29.3MB in the beginning and 58.1MB in the end (delta: -28.8MB). Peak memory consumption was 9.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 61.98ms. Allocated memory is still 75.5MB. Free memory was 58.0MB in the beginning and 56.3MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 58.76ms. Allocated memory is still 75.5MB. Free memory was 56.3MB in the beginning and 54.6MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 773.42ms. Allocated memory is still 75.5MB. Free memory was 54.6MB in the beginning and 41.0MB in the end (delta: 13.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 2434.27ms. Allocated memory is still 75.5MB. Free memory was 40.2MB in the beginning and 53.2MB in the end (delta: -13.0MB). There was no memory consumed. 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_116270cb-dfb2-4b09-9e9a-dbcf335fa88a/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5) 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_116270cb-dfb2-4b09-9e9a-dbcf335fa88a/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5) 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. [2022-11-19 06:52:45,106 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_116270cb-dfb2-4b09-9e9a-dbcf335fa88a/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: AssertionError: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_116270cb-dfb2-4b09-9e9a-dbcf335fa88a/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5) with exit command (exit)) Received EOF on stdin. No stderr output.