./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/double_req_bl_0921.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3107b633-4dcf-4c67-bfc9-1290cf6e7cb6/bin/utaipan-6cKwYrpEi9/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3107b633-4dcf-4c67-bfc9-1290cf6e7cb6/bin/utaipan-6cKwYrpEi9/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3107b633-4dcf-4c67-bfc9-1290cf6e7cb6/bin/utaipan-6cKwYrpEi9/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3107b633-4dcf-4c67-bfc9-1290cf6e7cb6/bin/utaipan-6cKwYrpEi9/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_0921.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3107b633-4dcf-4c67-bfc9-1290cf6e7cb6/bin/utaipan-6cKwYrpEi9/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3107b633-4dcf-4c67-bfc9-1290cf6e7cb6/bin/utaipan-6cKwYrpEi9 --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 ff79c740204f513a01c900350576ff8bf7bfaa86497cf43ba5460bcbb774895a --- 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-6b4ec56 [2022-11-20 20:43:12,980 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 20:43:12,983 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 20:43:13,011 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 20:43:13,011 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 20:43:13,013 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 20:43:13,015 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 20:43:13,017 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 20:43:13,020 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 20:43:13,021 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 20:43:13,023 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 20:43:13,024 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 20:43:13,025 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 20:43:13,027 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 20:43:13,028 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 20:43:13,030 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 20:43:13,031 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 20:43:13,033 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 20:43:13,035 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 20:43:13,038 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 20:43:13,040 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 20:43:13,041 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 20:43:13,043 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 20:43:13,044 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 20:43:13,049 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 20:43:13,049 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 20:43:13,050 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 20:43:13,051 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 20:43:13,052 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 20:43:13,054 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 20:43:13,054 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 20:43:13,056 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 20:43:13,057 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 20:43:13,058 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 20:43:13,060 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 20:43:13,061 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 20:43:13,062 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 20:43:13,062 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 20:43:13,063 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 20:43:13,065 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 20:43:13,066 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 20:43:13,067 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3107b633-4dcf-4c67-bfc9-1290cf6e7cb6/bin/utaipan-6cKwYrpEi9/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-20 20:43:13,094 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 20:43:13,095 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 20:43:13,095 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 20:43:13,096 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 20:43:13,096 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 20:43:13,097 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 20:43:13,097 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-20 20:43:13,098 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-20 20:43:13,098 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-20 20:43:13,098 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-20 20:43:13,099 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-20 20:43:13,099 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-20 20:43:13,099 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-20 20:43:13,100 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-20 20:43:13,100 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-20 20:43:13,100 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-20 20:43:13,101 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-20 20:43:13,101 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-20 20:43:13,102 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 20:43:13,102 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 20:43:13,103 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 20:43:13,103 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 20:43:13,103 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 20:43:13,104 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 20:43:13,104 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 20:43:13,104 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 20:43:13,105 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 20:43:13,105 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 20:43:13,105 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 20:43:13,106 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 20:43:13,106 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 20:43:13,106 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 20:43:13,107 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 20:43:13,107 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 20:43:13,107 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-20 20:43:13,108 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 20:43:13,108 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 20:43:13,108 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-20 20:43:13,109 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 20:43:13,109 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 20:43:13,109 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-20 20:43:13,109 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_3107b633-4dcf-4c67-bfc9-1290cf6e7cb6/bin/utaipan-6cKwYrpEi9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3107b633-4dcf-4c67-bfc9-1290cf6e7cb6/bin/utaipan-6cKwYrpEi9 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ff79c740204f513a01c900350576ff8bf7bfaa86497cf43ba5460bcbb774895a [2022-11-20 20:43:13,456 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 20:43:13,496 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 20:43:13,499 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 20:43:13,500 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 20:43:13,502 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 20:43:13,503 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3107b633-4dcf-4c67-bfc9-1290cf6e7cb6/bin/utaipan-6cKwYrpEi9/../../sv-benchmarks/c/float-newlib/double_req_bl_0921.c [2022-11-20 20:43:16,706 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 20:43:17,028 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 20:43:17,031 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3107b633-4dcf-4c67-bfc9-1290cf6e7cb6/sv-benchmarks/c/float-newlib/double_req_bl_0921.c [2022-11-20 20:43:17,040 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3107b633-4dcf-4c67-bfc9-1290cf6e7cb6/bin/utaipan-6cKwYrpEi9/data/472f7f15f/b6167bc8573a4d8db57e9633c8f8d313/FLAGa232ccd20 [2022-11-20 20:43:17,056 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3107b633-4dcf-4c67-bfc9-1290cf6e7cb6/bin/utaipan-6cKwYrpEi9/data/472f7f15f/b6167bc8573a4d8db57e9633c8f8d313 [2022-11-20 20:43:17,059 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 20:43:17,060 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 20:43:17,062 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 20:43:17,062 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 20:43:17,067 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 20:43:17,067 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 08:43:17" (1/1) ... [2022-11-20 20:43:17,069 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f42707 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:43:17, skipping insertion in model container [2022-11-20 20:43:17,069 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 08:43:17" (1/1) ... [2022-11-20 20:43:17,081 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 20:43:17,114 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 20:43:17,305 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3107b633-4dcf-4c67-bfc9-1290cf6e7cb6/sv-benchmarks/c/float-newlib/double_req_bl_0921.c[3679,3692] [2022-11-20 20:43:17,309 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 20:43:17,329 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 20:43:17,370 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3107b633-4dcf-4c67-bfc9-1290cf6e7cb6/sv-benchmarks/c/float-newlib/double_req_bl_0921.c[3679,3692] [2022-11-20 20:43:17,371 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 20:43:17,388 INFO L208 MainTranslator]: Completed translation [2022-11-20 20:43:17,389 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:43:17 WrapperNode [2022-11-20 20:43:17,389 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 20:43:17,390 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 20:43:17,391 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 20:43:17,391 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 20:43:17,400 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:43:17" (1/1) ... [2022-11-20 20:43:17,411 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:43:17" (1/1) ... [2022-11-20 20:43:17,438 INFO L138 Inliner]: procedures = 18, calls = 28, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 145 [2022-11-20 20:43:17,439 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 20:43:17,440 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 20:43:17,440 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 20:43:17,440 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 20:43:17,451 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:43:17" (1/1) ... [2022-11-20 20:43:17,451 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:43:17" (1/1) ... [2022-11-20 20:43:17,455 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:43:17" (1/1) ... [2022-11-20 20:43:17,455 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:43:17" (1/1) ... [2022-11-20 20:43:17,464 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:43:17" (1/1) ... [2022-11-20 20:43:17,469 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:43:17" (1/1) ... [2022-11-20 20:43:17,471 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:43:17" (1/1) ... [2022-11-20 20:43:17,472 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:43:17" (1/1) ... [2022-11-20 20:43:17,476 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 20:43:17,477 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 20:43:17,477 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 20:43:17,477 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 20:43:17,478 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:43:17" (1/1) ... [2022-11-20 20:43:17,486 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 20:43:17,501 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3107b633-4dcf-4c67-bfc9-1290cf6e7cb6/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:43:17,526 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3107b633-4dcf-4c67-bfc9-1290cf6e7cb6/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 20:43:17,529 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3107b633-4dcf-4c67-bfc9-1290cf6e7cb6/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 20:43:17,577 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 20:43:17,578 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 20:43:17,578 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 20:43:17,578 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2022-11-20 20:43:17,578 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 20:43:17,578 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2022-11-20 20:43:17,579 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 20:43:17,579 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 20:43:17,579 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 20:43:17,579 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 20:43:17,688 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 20:43:17,691 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 20:43:18,066 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 20:43:18,233 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 20:43:18,233 INFO L300 CfgBuilder]: Removed 6 assume(true) statements. [2022-11-20 20:43:18,237 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 08:43:18 BoogieIcfgContainer [2022-11-20 20:43:18,237 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 20:43:18,246 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 20:43:18,246 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 20:43:18,252 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 20:43:18,252 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 08:43:17" (1/3) ... [2022-11-20 20:43:18,253 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36b616f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 08:43:18, skipping insertion in model container [2022-11-20 20:43:18,253 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:43:17" (2/3) ... [2022-11-20 20:43:18,254 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36b616f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 08:43:18, skipping insertion in model container [2022-11-20 20:43:18,254 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 08:43:18" (3/3) ... [2022-11-20 20:43:18,256 INFO L112 eAbstractionObserver]: Analyzing ICFG double_req_bl_0921.c [2022-11-20 20:43:18,291 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 20:43:18,291 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 20:43:18,361 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 20:43:18,367 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;@b800275, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 20:43:18,368 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-20 20:43:18,372 INFO L276 IsEmpty]: Start isEmpty. Operand has 19 states, 17 states have (on average 1.7058823529411764) internal successors, (29), 18 states have internal predecessors, (29), 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) [2022-11-20 20:43:18,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-20 20:43:18,379 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:43:18,380 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:43:18,381 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:43:18,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:43:18,388 INFO L85 PathProgramCache]: Analyzing trace with hash -786783076, now seen corresponding path program 1 times [2022-11-20 20:43:18,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:43:18,401 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600467751] [2022-11-20 20:43:18,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:43:18,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:43:18,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:43:18,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:43:18,613 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:43:18,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600467751] [2022-11-20 20:43:18,614 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1600467751] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:43:18,614 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:43:18,614 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 20:43:18,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264070976] [2022-11-20 20:43:18,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:43:18,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-20 20:43:18,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:43:18,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-20 20:43:18,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 20:43:18,657 INFO L87 Difference]: Start difference. First operand has 19 states, 17 states have (on average 1.7058823529411764) internal successors, (29), 18 states have internal predecessors, (29), 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) [2022-11-20 20:43:18,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:43:18,704 INFO L93 Difference]: Finished difference Result 37 states and 57 transitions. [2022-11-20 20:43:18,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-20 20:43:18,707 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 [2022-11-20 20:43:18,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:43:18,718 INFO L225 Difference]: With dead ends: 37 [2022-11-20 20:43:18,718 INFO L226 Difference]: Without dead ends: 17 [2022-11-20 20:43:18,721 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 [2022-11-20 20:43:18,725 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 20:43:18,726 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 18 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 20:43:18,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-11-20 20:43:18,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2022-11-20 20:43:18,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.25) internal successors, (20), 16 states have internal predecessors, (20), 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) [2022-11-20 20:43:18,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 20 transitions. [2022-11-20 20:43:18,764 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 20 transitions. Word has length 8 [2022-11-20 20:43:18,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:43:18,764 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 20 transitions. [2022-11-20 20:43:18,765 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) [2022-11-20 20:43:18,765 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 20 transitions. [2022-11-20 20:43:18,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-20 20:43:18,766 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:43:18,766 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:43:18,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 20:43:18,767 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:43:18,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:43:18,767 INFO L85 PathProgramCache]: Analyzing trace with hash 1830875409, now seen corresponding path program 1 times [2022-11-20 20:43:18,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:43:18,768 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148487668] [2022-11-20 20:43:18,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:43:18,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:43:18,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 20:43:18,838 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 20:43:18,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 20:43:18,900 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-20 20:43:18,905 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-20 20:43:18,907 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-20 20:43:18,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 20:43:18,915 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1] [2022-11-20 20:43:18,918 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-20 20:43:18,949 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 08:43:18 BoogieIcfgContainer [2022-11-20 20:43:18,949 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-20 20:43:18,950 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-20 20:43:18,950 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-20 20:43:18,950 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-20 20:43:18,951 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 08:43:18" (3/4) ... [2022-11-20 20:43:18,956 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-20 20:43:18,957 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-20 20:43:18,958 INFO L158 Benchmark]: Toolchain (without parser) took 1897.71ms. Allocated memory is still 172.0MB. Free memory was 139.8MB in the beginning and 123.6MB in the end (delta: 16.2MB). Peak memory consumption was 17.3MB. Max. memory is 16.1GB. [2022-11-20 20:43:18,958 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 125.8MB. Free memory was 67.3MB in the beginning and 67.2MB in the end (delta: 126.0kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 20:43:18,959 INFO L158 Benchmark]: CACSL2BoogieTranslator took 327.92ms. Allocated memory is still 172.0MB. Free memory was 139.8MB in the beginning and 127.7MB in the end (delta: 12.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-20 20:43:18,960 INFO L158 Benchmark]: Boogie Procedure Inliner took 48.78ms. Allocated memory is still 172.0MB. Free memory was 127.7MB in the beginning and 125.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 20:43:18,961 INFO L158 Benchmark]: Boogie Preprocessor took 36.09ms. Allocated memory is still 172.0MB. Free memory was 125.6MB in the beginning and 123.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 20:43:18,961 INFO L158 Benchmark]: RCFGBuilder took 760.58ms. Allocated memory is still 172.0MB. Free memory was 123.5MB in the beginning and 103.7MB in the end (delta: 19.8MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-11-20 20:43:18,962 INFO L158 Benchmark]: TraceAbstraction took 703.47ms. Allocated memory is still 172.0MB. Free memory was 103.2MB in the beginning and 124.6MB in the end (delta: -21.4MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 20:43:18,963 INFO L158 Benchmark]: Witness Printer took 7.32ms. Allocated memory is still 172.0MB. Free memory is still 123.6MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 20:43:18,966 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 125.8MB. Free memory was 67.3MB in the beginning and 67.2MB in the end (delta: 126.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 327.92ms. Allocated memory is still 172.0MB. Free memory was 139.8MB in the beginning and 127.7MB in the end (delta: 12.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 48.78ms. Allocated memory is still 172.0MB. Free memory was 127.7MB in the beginning and 125.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 36.09ms. Allocated memory is still 172.0MB. Free memory was 125.6MB in the beginning and 123.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 760.58ms. Allocated memory is still 172.0MB. Free memory was 123.5MB in the beginning and 103.7MB in the end (delta: 19.8MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 703.47ms. Allocated memory is still 172.0MB. Free memory was 103.2MB in the beginning and 124.6MB in the end (delta: -21.4MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 7.32ms. Allocated memory is still 172.0MB. Free memory is still 123.6MB. 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: 142]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of bitwiseOr at line 61, overapproximation of someBinaryArithmeticDOUBLEoperation at line 62, overapproximation of bitwiseAnd at line 61, overapproximation of someBinaryDOUBLEComparisonOperation at line 129. Possible FailurePath: [L34-L43] static const double ln2_hi_log = 6.93147180369123816490e-01, ln2_lo_log = 1.90821492927058770002e-10, two54_log = 1.80143985094819840000e+16, Lg1_log = 6.666666666666735130e-01, Lg2_log = 3.999999999940941908e-01, Lg3_log = 2.857142874366239149e-01, Lg4_log = 2.222219843214978396e-01, Lg5_log = 1.818357216161805012e-01, Lg6_log = 1.531383769920937332e-01, Lg7_log = 1.479819860511658591e-01; [L45] static const double zero = 0.0; [L137] double x = 0.0 / 0.0; [L138] CALL, EXPR __ieee754_log(x) [L48] double hfsq, f, s, z, R, w, t1, t2, dk; [L49] __int32_t k, hx, i, j; [L50] __uint32_t lx; VAL [\old(x)=18014398509481985, Lg1_log=666666666666673513/1000000000000000000, Lg2_log=999999999985235477/2500000000000000000, Lg3_log=2857142874366239149/10000000000000000000, Lg4_log=555554960803744599/2500000000000000000, Lg5_log=454589304040451253/2500000000000000000, Lg6_log=382845942480234333/2500000000000000000, Lg7_log=1479819860511658591/10000000000000000000, ln2_hi_log=69314718036912381649/100000000000000000000, ln2_lo_log=95410746463529385001/500000000000000000000000000000, two54_log=18014398509481984, x=18014398509481985, zero=0] [L53] ieee_double_shape_type ew_u; [L54] ew_u.value = (x) [L55] EXPR ew_u.parts.msw [L55] (hx) = ew_u.parts.msw [L56] EXPR ew_u.parts.lsw [L56] (lx) = ew_u.parts.lsw [L59] k = 0 VAL [\old(x)=18014398509481985, hx=-1, k=0, Lg1_log=666666666666673513/1000000000000000000, Lg2_log=999999999985235477/2500000000000000000, Lg3_log=2857142874366239149/10000000000000000000, Lg4_log=555554960803744599/2500000000000000000, Lg5_log=454589304040451253/2500000000000000000, Lg6_log=382845942480234333/2500000000000000000, Lg7_log=1479819860511658591/10000000000000000000, ln2_hi_log=69314718036912381649/100000000000000000000, ln2_lo_log=95410746463529385001/500000000000000000000000000000, lx=0, two54_log=18014398509481984, x=18014398509481985, zero=0] [L60] COND TRUE hx < 0x00100000 VAL [\old(x)=18014398509481985, hx=-1, k=0, Lg1_log=666666666666673513/1000000000000000000, Lg2_log=999999999985235477/2500000000000000000, Lg3_log=2857142874366239149/10000000000000000000, Lg4_log=555554960803744599/2500000000000000000, Lg5_log=454589304040451253/2500000000000000000, Lg6_log=382845942480234333/2500000000000000000, Lg7_log=1479819860511658591/10000000000000000000, ln2_hi_log=69314718036912381649/100000000000000000000, ln2_lo_log=95410746463529385001/500000000000000000000000000000, lx=0, two54_log=18014398509481984, x=18014398509481985, zero=0] [L61] COND TRUE ((hx & 0x7fffffff) | lx) == 0 [L62] return -two54_log / zero; VAL [\old(x)=18014398509481985, hx=-1, k=0, Lg1_log=666666666666673513/1000000000000000000, Lg2_log=999999999985235477/2500000000000000000, Lg3_log=2857142874366239149/10000000000000000000, Lg4_log=555554960803744599/2500000000000000000, Lg5_log=454589304040451253/2500000000000000000, Lg6_log=382845942480234333/2500000000000000000, Lg7_log=1479819860511658591/10000000000000000000, ln2_hi_log=69314718036912381649/100000000000000000000, ln2_lo_log=95410746463529385001/500000000000000000000000000000, lx=0, two54_log=18014398509481984, x=18014398509481985, zero=0] [L138] RET, EXPR __ieee754_log(x) [L138] double res = __ieee754_log(x); [L141] CALL, EXPR isnan_double(res) [L129] return x != x; [L141] RET, EXPR isnan_double(res) [L141] COND TRUE !isnan_double(res) [L142] reach_error() VAL [Lg1_log=666666666666673513/1000000000000000000, Lg2_log=999999999985235477/2500000000000000000, Lg3_log=2857142874366239149/10000000000000000000, Lg4_log=555554960803744599/2500000000000000000, Lg5_log=454589304040451253/2500000000000000000, Lg6_log=382845942480234333/2500000000000000000, Lg7_log=1479819860511658591/10000000000000000000, ln2_hi_log=69314718036912381649/100000000000000000000, ln2_lo_log=95410746463529385001/500000000000000000000000000000, res=18014398509481986, two54_log=18014398509481984, x=18014398509481985, zero=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 19 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.6s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 18 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4 IncrementalHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 18 mSDtfsCounter, 4 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=19occurred 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 [2022-11-20 20:43:18,989 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3107b633-4dcf-4c67-bfc9-1290cf6e7cb6/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3107b633-4dcf-4c67-bfc9-1290cf6e7cb6/bin/utaipan-6cKwYrpEi9/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3107b633-4dcf-4c67-bfc9-1290cf6e7cb6/bin/utaipan-6cKwYrpEi9/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3107b633-4dcf-4c67-bfc9-1290cf6e7cb6/bin/utaipan-6cKwYrpEi9/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3107b633-4dcf-4c67-bfc9-1290cf6e7cb6/bin/utaipan-6cKwYrpEi9/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_0921.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3107b633-4dcf-4c67-bfc9-1290cf6e7cb6/bin/utaipan-6cKwYrpEi9/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3107b633-4dcf-4c67-bfc9-1290cf6e7cb6/bin/utaipan-6cKwYrpEi9 --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 ff79c740204f513a01c900350576ff8bf7bfaa86497cf43ba5460bcbb774895a --- 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-6b4ec56 [2022-11-20 20:43:21,762 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 20:43:21,765 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 20:43:21,817 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 20:43:21,818 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 20:43:21,822 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 20:43:21,825 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 20:43:21,828 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 20:43:21,831 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 20:43:21,837 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 20:43:21,839 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 20:43:21,842 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 20:43:21,842 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 20:43:21,845 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 20:43:21,847 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 20:43:21,854 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 20:43:21,855 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 20:43:21,856 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 20:43:21,861 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 20:43:21,865 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 20:43:21,870 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 20:43:21,871 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 20:43:21,874 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 20:43:21,875 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 20:43:21,883 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 20:43:21,887 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 20:43:21,888 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 20:43:21,889 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 20:43:21,891 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 20:43:21,892 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 20:43:21,893 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 20:43:21,894 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 20:43:21,895 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 20:43:21,897 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 20:43:21,898 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 20:43:21,899 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 20:43:21,900 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 20:43:21,900 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 20:43:21,900 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 20:43:21,901 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 20:43:21,902 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 20:43:21,907 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3107b633-4dcf-4c67-bfc9-1290cf6e7cb6/bin/utaipan-6cKwYrpEi9/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2022-11-20 20:43:21,943 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 20:43:21,943 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 20:43:21,945 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 20:43:21,945 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 20:43:21,946 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 20:43:21,946 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 20:43:21,947 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-20 20:43:21,947 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-20 20:43:21,947 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-20 20:43:21,947 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-20 20:43:21,949 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-20 20:43:21,949 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-20 20:43:21,950 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 20:43:21,950 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 20:43:21,950 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 20:43:21,951 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 20:43:21,951 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 20:43:21,951 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 20:43:21,951 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 20:43:21,952 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-20 20:43:21,952 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-20 20:43:21,952 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-20 20:43:21,952 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 20:43:21,953 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 20:43:21,953 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 20:43:21,953 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 20:43:21,953 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 20:43:21,954 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 20:43:21,954 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 20:43:21,954 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 20:43:21,954 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 20:43:21,955 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 20:43:21,955 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 20:43:21,955 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-20 20:43:21,956 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-20 20:43:21,956 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 20:43:21,956 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-20 20:43:21,956 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-20 20:43:21,957 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3107b633-4dcf-4c67-bfc9-1290cf6e7cb6/bin/utaipan-6cKwYrpEi9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3107b633-4dcf-4c67-bfc9-1290cf6e7cb6/bin/utaipan-6cKwYrpEi9 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ff79c740204f513a01c900350576ff8bf7bfaa86497cf43ba5460bcbb774895a [2022-11-20 20:43:22,355 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 20:43:22,382 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 20:43:22,386 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 20:43:22,388 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 20:43:22,388 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 20:43:22,390 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3107b633-4dcf-4c67-bfc9-1290cf6e7cb6/bin/utaipan-6cKwYrpEi9/../../sv-benchmarks/c/float-newlib/double_req_bl_0921.c [2022-11-20 20:43:25,436 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 20:43:25,689 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 20:43:25,690 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3107b633-4dcf-4c67-bfc9-1290cf6e7cb6/sv-benchmarks/c/float-newlib/double_req_bl_0921.c [2022-11-20 20:43:25,698 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3107b633-4dcf-4c67-bfc9-1290cf6e7cb6/bin/utaipan-6cKwYrpEi9/data/76a99dbc3/acddf36fc4584e63864532c76638709f/FLAGe65ea7e41 [2022-11-20 20:43:25,712 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3107b633-4dcf-4c67-bfc9-1290cf6e7cb6/bin/utaipan-6cKwYrpEi9/data/76a99dbc3/acddf36fc4584e63864532c76638709f [2022-11-20 20:43:25,715 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 20:43:25,717 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 20:43:25,719 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 20:43:25,719 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 20:43:25,727 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 20:43:25,729 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 08:43:25" (1/1) ... [2022-11-20 20:43:25,730 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52de4616 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:43:25, skipping insertion in model container [2022-11-20 20:43:25,730 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 08:43:25" (1/1) ... [2022-11-20 20:43:25,739 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 20:43:25,782 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 20:43:26,047 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3107b633-4dcf-4c67-bfc9-1290cf6e7cb6/sv-benchmarks/c/float-newlib/double_req_bl_0921.c[3679,3692] [2022-11-20 20:43:26,063 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 20:43:26,089 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 20:43:26,132 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3107b633-4dcf-4c67-bfc9-1290cf6e7cb6/sv-benchmarks/c/float-newlib/double_req_bl_0921.c[3679,3692] [2022-11-20 20:43:26,137 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 20:43:26,164 INFO L208 MainTranslator]: Completed translation [2022-11-20 20:43:26,166 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:43:26 WrapperNode [2022-11-20 20:43:26,166 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 20:43:26,167 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 20:43:26,168 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 20:43:26,168 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 20:43:26,176 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:43:26" (1/1) ... [2022-11-20 20:43:26,203 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:43:26" (1/1) ... [2022-11-20 20:43:26,243 INFO L138 Inliner]: procedures = 21, calls = 28, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 145 [2022-11-20 20:43:26,246 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 20:43:26,248 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 20:43:26,248 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 20:43:26,248 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 20:43:26,259 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:43:26" (1/1) ... [2022-11-20 20:43:26,259 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:43:26" (1/1) ... [2022-11-20 20:43:26,275 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:43:26" (1/1) ... [2022-11-20 20:43:26,277 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:43:26" (1/1) ... [2022-11-20 20:43:26,298 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:43:26" (1/1) ... [2022-11-20 20:43:26,314 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:43:26" (1/1) ... [2022-11-20 20:43:26,316 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:43:26" (1/1) ... [2022-11-20 20:43:26,318 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:43:26" (1/1) ... [2022-11-20 20:43:26,321 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 20:43:26,331 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 20:43:26,331 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 20:43:26,331 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 20:43:26,332 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:43:26" (1/1) ... [2022-11-20 20:43:26,341 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 20:43:26,361 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3107b633-4dcf-4c67-bfc9-1290cf6e7cb6/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:43:26,378 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3107b633-4dcf-4c67-bfc9-1290cf6e7cb6/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 20:43:26,406 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3107b633-4dcf-4c67-bfc9-1290cf6e7cb6/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 20:43:26,437 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 20:43:26,437 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2022-11-20 20:43:26,437 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2022-11-20 20:43:26,438 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-20 20:43:26,438 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 20:43:26,438 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-20 20:43:26,438 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 20:43:26,438 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 20:43:26,439 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-20 20:43:26,439 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 20:43:26,564 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 20:43:26,566 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 20:43:52,354 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 20:43:52,361 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 20:43:52,362 INFO L300 CfgBuilder]: Removed 6 assume(true) statements. [2022-11-20 20:43:52,364 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 08:43:52 BoogieIcfgContainer [2022-11-20 20:43:52,364 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 20:43:52,367 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 20:43:52,367 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 20:43:52,372 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 20:43:52,372 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 08:43:25" (1/3) ... [2022-11-20 20:43:52,373 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12b8981d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 08:43:52, skipping insertion in model container [2022-11-20 20:43:52,373 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:43:26" (2/3) ... [2022-11-20 20:43:52,374 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12b8981d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 08:43:52, skipping insertion in model container [2022-11-20 20:43:52,374 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 08:43:52" (3/3) ... [2022-11-20 20:43:52,376 INFO L112 eAbstractionObserver]: Analyzing ICFG double_req_bl_0921.c [2022-11-20 20:43:52,400 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 20:43:52,400 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 20:43:52,460 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 20:43:52,468 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;@633b7e4d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 20:43:52,468 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-20 20:43:52,473 INFO L276 IsEmpty]: Start isEmpty. Operand has 29 states, 27 states have (on average 1.7037037037037037) internal successors, (46), 28 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) [2022-11-20 20:43:52,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-20 20:43:52,481 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:43:52,481 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:43:52,482 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:43:52,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:43:52,488 INFO L85 PathProgramCache]: Analyzing trace with hash 1030195787, now seen corresponding path program 1 times [2022-11-20 20:43:52,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-20 20:43:52,503 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1491259185] [2022-11-20 20:43:52,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:43:52,504 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 [2022-11-20 20:43:52,504 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3107b633-4dcf-4c67-bfc9-1290cf6e7cb6/bin/utaipan-6cKwYrpEi9/mathsat [2022-11-20 20:43:52,510 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3107b633-4dcf-4c67-bfc9-1290cf6e7cb6/bin/utaipan-6cKwYrpEi9/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) [2022-11-20 20:43:52,556 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3107b633-4dcf-4c67-bfc9-1290cf6e7cb6/bin/utaipan-6cKwYrpEi9/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 [2022-11-20 20:43:53,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:43:53,549 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-20 20:43:53,554 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:43:53,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:43:53,583 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 20:43:53,585 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-20 20:43:53,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1491259185] [2022-11-20 20:43:53,587 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1491259185] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:43:53,588 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:43:53,588 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 20:43:53,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744006195] [2022-11-20 20:43:53,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:43:53,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-20 20:43:53,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-20 20:43:53,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-20 20:43:53,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 20:43:53,651 INFO L87 Difference]: Start difference. First operand has 29 states, 27 states have (on average 1.7037037037037037) internal successors, (46), 28 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) [2022-11-20 20:43:53,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:43:53,670 INFO L93 Difference]: Finished difference Result 56 states and 90 transitions. [2022-11-20 20:43:53,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-20 20:43:53,676 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 [2022-11-20 20:43:53,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:43:53,691 INFO L225 Difference]: With dead ends: 56 [2022-11-20 20:43:53,691 INFO L226 Difference]: Without dead ends: 26 [2022-11-20 20:43:53,707 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 [2022-11-20 20:43:53,710 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 [2022-11-20 20:43:53,711 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] [2022-11-20 20:43:53,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-11-20 20:43:53,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2022-11-20 20:43:53,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 25 states have (on average 1.44) internal successors, (36), 25 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) [2022-11-20 20:43:53,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 36 transitions. [2022-11-20 20:43:53,794 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 36 transitions. Word has length 10 [2022-11-20 20:43:53,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:43:53,794 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 36 transitions. [2022-11-20 20:43:53,795 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) [2022-11-20 20:43:53,796 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 36 transitions. [2022-11-20 20:43:53,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-20 20:43:53,797 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:43:53,797 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:43:53,833 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3107b633-4dcf-4c67-bfc9-1290cf6e7cb6/bin/utaipan-6cKwYrpEi9/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 [2022-11-20 20:43:54,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3107b633-4dcf-4c67-bfc9-1290cf6e7cb6/bin/utaipan-6cKwYrpEi9/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 [2022-11-20 20:43:54,015 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:43:54,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:43:54,015 INFO L85 PathProgramCache]: Analyzing trace with hash -1305111410, now seen corresponding path program 1 times [2022-11-20 20:43:54,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-20 20:43:54,016 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [593065561] [2022-11-20 20:43:54,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:43:54,017 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 [2022-11-20 20:43:54,017 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3107b633-4dcf-4c67-bfc9-1290cf6e7cb6/bin/utaipan-6cKwYrpEi9/mathsat [2022-11-20 20:43:54,018 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3107b633-4dcf-4c67-bfc9-1290cf6e7cb6/bin/utaipan-6cKwYrpEi9/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) [2022-11-20 20:43:54,024 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3107b633-4dcf-4c67-bfc9-1290cf6e7cb6/bin/utaipan-6cKwYrpEi9/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 [2022-11-20 20:43:55,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:43:55,101 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-20 20:43:55,104 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:43:55,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:43:55,876 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 20:43:55,876 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-20 20:43:55,877 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [593065561] [2022-11-20 20:43:55,877 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [593065561] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:43:55,877 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:43:55,877 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 20:43:55,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190226873] [2022-11-20 20:43:55,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:43:55,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 20:43:55,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-20 20:43:55,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 20:43:55,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 20:43:55,882 INFO L87 Difference]: Start difference. First operand 26 states and 36 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 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) [2022-11-20 20:43:55,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:43:55,891 INFO L93 Difference]: Finished difference Result 31 states and 40 transitions. [2022-11-20 20:43:55,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 20:43:55,891 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 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 [2022-11-20 20:43:55,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:43:55,892 INFO L225 Difference]: With dead ends: 31 [2022-11-20 20:43:55,893 INFO L226 Difference]: Without dead ends: 26 [2022-11-20 20:43:55,893 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 20:43:55,895 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 0 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 19 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 20:43:55,896 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 75 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 19 Unchecked, 0.0s Time] [2022-11-20 20:43:55,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-11-20 20:43:55,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2022-11-20 20:43:55,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 25 states have (on average 1.4) internal successors, (35), 25 states have internal predecessors, (35), 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) [2022-11-20 20:43:55,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 35 transitions. [2022-11-20 20:43:55,905 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 35 transitions. Word has length 11 [2022-11-20 20:43:55,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:43:55,908 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 35 transitions. [2022-11-20 20:43:55,908 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 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) [2022-11-20 20:43:55,909 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 35 transitions. [2022-11-20 20:43:55,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-20 20:43:55,910 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:43:55,910 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:43:55,947 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3107b633-4dcf-4c67-bfc9-1290cf6e7cb6/bin/utaipan-6cKwYrpEi9/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 [2022-11-20 20:43:56,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3107b633-4dcf-4c67-bfc9-1290cf6e7cb6/bin/utaipan-6cKwYrpEi9/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 [2022-11-20 20:43:56,136 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:43:56,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:43:56,136 INFO L85 PathProgramCache]: Analyzing trace with hash -594923761, now seen corresponding path program 1 times [2022-11-20 20:43:56,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-20 20:43:56,137 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [477126149] [2022-11-20 20:43:56,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:43:56,144 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 [2022-11-20 20:43:56,144 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3107b633-4dcf-4c67-bfc9-1290cf6e7cb6/bin/utaipan-6cKwYrpEi9/mathsat [2022-11-20 20:43:56,146 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3107b633-4dcf-4c67-bfc9-1290cf6e7cb6/bin/utaipan-6cKwYrpEi9/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) [2022-11-20 20:43:56,199 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3107b633-4dcf-4c67-bfc9-1290cf6e7cb6/bin/utaipan-6cKwYrpEi9/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 [2022-11-20 20:43:56,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:43:56,397 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-20 20:43:56,398 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:43:57,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:43:57,679 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 20:43:57,680 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-20 20:43:57,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [477126149] [2022-11-20 20:43:57,680 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [477126149] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:43:57,681 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:43:57,681 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 20:43:57,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224936625] [2022-11-20 20:43:57,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:43:57,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 20:43:57,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-20 20:43:57,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 20:43:57,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-20 20:43:57,684 INFO L87 Difference]: Start difference. First operand 26 states and 35 transitions. Second operand has 7 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 6 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) [2022-11-20 20:44:01,032 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.83s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 20:44:07,607 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.39s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 20:44:10,719 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.11s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 20:44:12,997 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.28s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 20:44:15,357 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.30s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 20:44:17,974 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.38s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 20:44:20,009 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 20:44:22,341 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.33s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 20:44:24,344 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 20:44:26,978 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.63s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 20:44:28,982 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 20:44:31,628 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.64s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 20:44:33,634 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 20:44:35,963 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.33s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 20:44:37,972 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 20:44:38,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:44:38,126 INFO L93 Difference]: Finished difference Result 36 states and 43 transitions. [2022-11-20 20:44:38,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 20:44:38,127 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 6 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 [2022-11-20 20:44:38,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:44:38,128 INFO L225 Difference]: With dead ends: 36 [2022-11-20 20:44:38,128 INFO L226 Difference]: Without dead ends: 31 [2022-11-20 20:44:38,129 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-11-20 20:44:38,134 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 35 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 1 mSolverCounterUnsat, 15 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 37.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 15 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 39.7s IncrementalHoareTripleChecker+Time [2022-11-20 20:44:38,135 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 102 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 46 Invalid, 15 Unknown, 0 Unchecked, 39.7s Time] [2022-11-20 20:44:38,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-11-20 20:44:38,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 26. [2022-11-20 20:44:38,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 25 states have (on average 1.36) internal successors, (34), 25 states have internal predecessors, (34), 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) [2022-11-20 20:44:38,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 34 transitions. [2022-11-20 20:44:38,144 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 34 transitions. Word has length 11 [2022-11-20 20:44:38,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:44:38,145 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 34 transitions. [2022-11-20 20:44:38,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 6 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) [2022-11-20 20:44:38,148 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 34 transitions. [2022-11-20 20:44:38,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-20 20:44:38,149 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:44:38,149 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:44:38,172 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3107b633-4dcf-4c67-bfc9-1290cf6e7cb6/bin/utaipan-6cKwYrpEi9/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 [2022-11-20 20:44:38,350 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3107b633-4dcf-4c67-bfc9-1290cf6e7cb6/bin/utaipan-6cKwYrpEi9/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 [2022-11-20 20:44:38,350 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:44:38,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:44:38,351 INFO L85 PathProgramCache]: Analyzing trace with hash -1813045648, now seen corresponding path program 1 times [2022-11-20 20:44:38,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-20 20:44:38,352 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2094730821] [2022-11-20 20:44:38,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:44:38,352 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 [2022-11-20 20:44:38,352 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3107b633-4dcf-4c67-bfc9-1290cf6e7cb6/bin/utaipan-6cKwYrpEi9/mathsat [2022-11-20 20:44:38,353 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3107b633-4dcf-4c67-bfc9-1290cf6e7cb6/bin/utaipan-6cKwYrpEi9/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) [2022-11-20 20:44:38,355 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3107b633-4dcf-4c67-bfc9-1290cf6e7cb6/bin/utaipan-6cKwYrpEi9/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 [2022-11-20 20:44:39,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:44:39,470 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-20 20:44:39,472 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:44:41,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:44:41,429 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 20:44:41,429 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-20 20:44:41,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2094730821] [2022-11-20 20:44:41,430 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2094730821] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:44:41,430 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:44:41,430 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 20:44:41,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236839987] [2022-11-20 20:44:41,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:44:41,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 20:44:41,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-20 20:44:41,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 20:44:41,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-20 20:44:41,432 INFO L87 Difference]: Start difference. First operand 26 states and 34 transitions. Second operand has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 6 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) [2022-11-20 20:44:42,894 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 20:44:50,539 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.55s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 20:44:53,782 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.48s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 20:44:56,059 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.28s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 20:44:57,367 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.31s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 20:44:59,814 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.31s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 20:45:02,481 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.36s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 20:45:04,484 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 20:45:06,488 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 20:45:08,834 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.35s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 20:45:10,840 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 20:45:12,846 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 20:45:15,472 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.63s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 20:45:17,481 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 20:45:19,487 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 20:45:22,150 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.66s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 20:45:24,153 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 20:45:26,161 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 20:45:28,484 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.32s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 20:45:30,489 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 20:45:32,492 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 20:45:32,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:45:32,652 INFO L93 Difference]: Finished difference Result 36 states and 42 transitions. [2022-11-20 20:45:32,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 20:45:32,653 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 6 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 [2022-11-20 20:45:32,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:45:32,654 INFO L225 Difference]: With dead ends: 36 [2022-11-20 20:45:32,654 INFO L226 Difference]: Without dead ends: 31 [2022-11-20 20:45:32,655 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-11-20 20:45:32,656 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 26 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 1 mSolverCounterUnsat, 19 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 48.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 19 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 50.0s IncrementalHoareTripleChecker+Time [2022-11-20 20:45:32,657 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 86 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 52 Invalid, 19 Unknown, 0 Unchecked, 50.0s Time] [2022-11-20 20:45:32,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-11-20 20:45:32,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 26. [2022-11-20 20:45:32,666 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) [2022-11-20 20:45:32,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 33 transitions. [2022-11-20 20:45:32,670 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 33 transitions. Word has length 12 [2022-11-20 20:45:32,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:45:32,671 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 33 transitions. [2022-11-20 20:45:32,671 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 6 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) [2022-11-20 20:45:32,671 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 33 transitions. [2022-11-20 20:45:32,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-20 20:45:32,672 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:45:32,672 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:45:32,703 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3107b633-4dcf-4c67-bfc9-1290cf6e7cb6/bin/utaipan-6cKwYrpEi9/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)] Forceful destruction successful, exit code 0 [2022-11-20 20:45:32,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3107b633-4dcf-4c67-bfc9-1290cf6e7cb6/bin/utaipan-6cKwYrpEi9/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 [2022-11-20 20:45:32,873 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:45:32,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:45:32,874 INFO L85 PathProgramCache]: Analyzing trace with hash 464451163, now seen corresponding path program 1 times [2022-11-20 20:45:32,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-20 20:45:32,878 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [417094932] [2022-11-20 20:45:32,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:45:32,878 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 [2022-11-20 20:45:32,878 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3107b633-4dcf-4c67-bfc9-1290cf6e7cb6/bin/utaipan-6cKwYrpEi9/mathsat [2022-11-20 20:45:32,880 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3107b633-4dcf-4c67-bfc9-1290cf6e7cb6/bin/utaipan-6cKwYrpEi9/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) [2022-11-20 20:45:32,883 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3107b633-4dcf-4c67-bfc9-1290cf6e7cb6/bin/utaipan-6cKwYrpEi9/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 (6)] Waiting until timeout for monitored process [2022-11-20 20:45:33,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3107b633-4dcf-4c67-bfc9-1290cf6e7cb6/bin/utaipan-6cKwYrpEi9/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 [2022-11-20 20:45:33,015 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_3107b633-4dcf-4c67-bfc9-1290cf6e7cb6/bin/utaipan-6cKwYrpEi9/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 (6) 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_3107b633-4dcf-4c67-bfc9-1290cf6e7cb6/bin/utaipan-6cKwYrpEi9/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 (6) 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 [2022-11-20 20:45:33,020 INFO L158 Benchmark]: Toolchain (without parser) took 127302.88ms. Allocated memory is still 67.1MB. Free memory was 39.4MB in the beginning and 40.5MB in the end (delta: -1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 20:45:33,020 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 52.4MB. Free memory was 29.8MB in the beginning and 29.8MB in the end (delta: 48.8kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 20:45:33,021 INFO L158 Benchmark]: CACSL2BoogieTranslator took 447.40ms. Allocated memory is still 67.1MB. Free memory was 39.1MB in the beginning and 42.0MB in the end (delta: -2.8MB). Peak memory consumption was 9.2MB. Max. memory is 16.1GB. [2022-11-20 20:45:33,021 INFO L158 Benchmark]: Boogie Procedure Inliner took 78.88ms. Allocated memory is still 67.1MB. Free memory was 42.0MB in the beginning and 39.9MB in the end (delta: 2.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-20 20:45:33,021 INFO L158 Benchmark]: Boogie Preprocessor took 82.46ms. Allocated memory is still 67.1MB. Free memory was 39.9MB in the beginning and 37.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 20:45:33,022 INFO L158 Benchmark]: RCFGBuilder took 26033.75ms. Allocated memory is still 67.1MB. Free memory was 37.8MB in the beginning and 40.4MB in the end (delta: -2.6MB). Peak memory consumption was 12.7MB. Max. memory is 16.1GB. [2022-11-20 20:45:33,022 INFO L158 Benchmark]: TraceAbstraction took 100652.38ms. Allocated memory is still 67.1MB. Free memory was 39.8MB in the beginning and 40.5MB in the end (delta: -743.2kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 20:45:33,017 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3107b633-4dcf-4c67-bfc9-1290cf6e7cb6/bin/utaipan-6cKwYrpEi9/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 (6)] Forceful destruction successful, exit code 139 [2022-11-20 20:45:33,026 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 52.4MB. Free memory was 29.8MB in the beginning and 29.8MB in the end (delta: 48.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 447.40ms. Allocated memory is still 67.1MB. Free memory was 39.1MB in the beginning and 42.0MB in the end (delta: -2.8MB). Peak memory consumption was 9.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 78.88ms. Allocated memory is still 67.1MB. Free memory was 42.0MB in the beginning and 39.9MB in the end (delta: 2.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 82.46ms. Allocated memory is still 67.1MB. Free memory was 39.9MB in the beginning and 37.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 26033.75ms. Allocated memory is still 67.1MB. Free memory was 37.8MB in the beginning and 40.4MB in the end (delta: -2.6MB). Peak memory consumption was 12.7MB. Max. memory is 16.1GB. * TraceAbstraction took 100652.38ms. Allocated memory is still 67.1MB. Free memory was 39.8MB in the beginning and 40.5MB in the end (delta: -743.2kB). 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_3107b633-4dcf-4c67-bfc9-1290cf6e7cb6/bin/utaipan-6cKwYrpEi9/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 (6) 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_3107b633-4dcf-4c67-bfc9-1290cf6e7cb6/bin/utaipan-6cKwYrpEi9/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 (6) 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. [2022-11-20 20:45:33,235 WARN L435 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3107b633-4dcf-4c67-bfc9-1290cf6e7cb6/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forcibly destroying the process [2022-11-20 20:45:33,306 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3107b633-4dcf-4c67-bfc9-1290cf6e7cb6/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 137 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_3107b633-4dcf-4c67-bfc9-1290cf6e7cb6/bin/utaipan-6cKwYrpEi9/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 (6) with exit command (exit)) Received EOF on stdin. No stderr output.