./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/double_req_bl_1230.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 47ea0209 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83492a8c-23c3-483b-8f5a-575d5a4c9f20/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83492a8c-23c3-483b-8f5a-575d5a4c9f20/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83492a8c-23c3-483b-8f5a-575d5a4c9f20/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83492a8c-23c3-483b-8f5a-575d5a4c9f20/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1230.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83492a8c-23c3-483b-8f5a-575d5a4c9f20/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83492a8c-23c3-483b-8f5a-575d5a4c9f20/bin/utaipan-UUZaoUuFF8 --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 7a8b477e0de82621230934ea5797a52ab61045346694bc3bac8acbd53f389ba3 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:41:51,656 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:41:51,660 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:41:51,728 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:41:51,729 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:41:51,735 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:41:51,737 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:41:51,742 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:41:51,746 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:41:51,754 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:41:51,755 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:41:51,758 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:41:51,759 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:41:51,762 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:41:51,765 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:41:51,772 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:41:51,774 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:41:51,776 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:41:51,779 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:41:51,789 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:41:51,791 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:41:51,793 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:41:51,797 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:41:51,799 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:41:51,811 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:41:51,811 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:41:51,812 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:41:51,814 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:41:51,815 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:41:51,817 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:41:51,818 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:41:51,819 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:41:51,822 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:41:51,824 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:41:51,826 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:41:51,827 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:41:51,828 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:41:51,828 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:41:51,829 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:41:51,830 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:41:51,831 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:41:51,832 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83492a8c-23c3-483b-8f5a-575d5a4c9f20/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-07 01:41:51,890 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:41:51,890 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:41:51,892 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:41:51,892 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:41:51,893 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:41:51,893 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:41:51,893 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 01:41:51,893 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:41:51,894 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:41:51,894 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 01:41:51,903 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 01:41:51,903 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:41:51,903 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 01:41:51,904 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 01:41:51,904 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 01:41:51,906 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:41:51,906 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 01:41:51,906 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 01:41:51,907 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 01:41:51,907 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:41:51,907 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:41:51,907 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:41:51,908 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:41:51,908 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:41:51,908 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 01:41:51,908 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:41:51,909 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:41:51,909 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:41:51,909 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:41:51,911 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:41:51,911 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:41:51,912 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:41:51,912 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:41:51,913 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:41:51,913 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 01:41:51,913 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 01:41:51,913 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:41:51,914 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:41:51,914 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:41:51,914 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_83492a8c-23c3-483b-8f5a-575d5a4c9f20/bin/utaipan-UUZaoUuFF8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83492a8c-23c3-483b-8f5a-575d5a4c9f20/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7a8b477e0de82621230934ea5797a52ab61045346694bc3bac8acbd53f389ba3 [2021-11-07 01:41:52,262 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:41:52,287 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:41:52,290 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:41:52,292 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:41:52,293 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:41:52,295 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83492a8c-23c3-483b-8f5a-575d5a4c9f20/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/float-newlib/double_req_bl_1230.c [2021-11-07 01:41:52,370 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83492a8c-23c3-483b-8f5a-575d5a4c9f20/bin/utaipan-UUZaoUuFF8/data/8999a4e59/93c121bd771841558b0442d8a7d4047c/FLAGff84ebb0a [2021-11-07 01:41:52,854 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:41:52,855 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83492a8c-23c3-483b-8f5a-575d5a4c9f20/sv-benchmarks/c/float-newlib/double_req_bl_1230.c [2021-11-07 01:41:52,875 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83492a8c-23c3-483b-8f5a-575d5a4c9f20/bin/utaipan-UUZaoUuFF8/data/8999a4e59/93c121bd771841558b0442d8a7d4047c/FLAGff84ebb0a [2021-11-07 01:41:53,218 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83492a8c-23c3-483b-8f5a-575d5a4c9f20/bin/utaipan-UUZaoUuFF8/data/8999a4e59/93c121bd771841558b0442d8a7d4047c [2021-11-07 01:41:53,222 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:41:53,225 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:41:53,231 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:41:53,232 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:41:53,236 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:41:53,237 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:41:53" (1/1) ... [2021-11-07 01:41:53,239 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41b452b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:41:53, skipping insertion in model container [2021-11-07 01:41:53,240 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:41:53" (1/1) ... [2021-11-07 01:41:53,247 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:41:53,265 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:41:53,523 WARN L228 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_83492a8c-23c3-483b-8f5a-575d5a4c9f20/sv-benchmarks/c/float-newlib/double_req_bl_1230.c[1667,1680] [2021-11-07 01:41:53,530 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:41:53,544 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 01:41:53,591 WARN L228 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_83492a8c-23c3-483b-8f5a-575d5a4c9f20/sv-benchmarks/c/float-newlib/double_req_bl_1230.c[1667,1680] [2021-11-07 01:41:53,594 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:41:53,614 INFO L208 MainTranslator]: Completed translation [2021-11-07 01:41:53,614 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:41:53 WrapperNode [2021-11-07 01:41:53,614 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:41:53,616 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 01:41:53,616 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 01:41:53,616 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 01:41:53,624 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:41:53" (1/1) ... [2021-11-07 01:41:53,645 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:41:53" (1/1) ... [2021-11-07 01:41:53,685 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 01:41:53,688 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 01:41:53,688 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 01:41:53,689 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 01:41:53,697 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:41:53" (1/1) ... [2021-11-07 01:41:53,697 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:41:53" (1/1) ... [2021-11-07 01:41:53,704 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:41:53" (1/1) ... [2021-11-07 01:41:53,705 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:41:53" (1/1) ... [2021-11-07 01:41:53,726 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:41:53" (1/1) ... [2021-11-07 01:41:53,735 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:41:53" (1/1) ... [2021-11-07 01:41:53,737 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:41:53" (1/1) ... [2021-11-07 01:41:53,739 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 01:41:53,740 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 01:41:53,741 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 01:41:53,741 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 01:41:53,742 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:41:53" (1/1) ... [2021-11-07 01:41:53,749 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:41:53,761 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83492a8c-23c3-483b-8f5a-575d5a4c9f20/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:41:53,773 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83492a8c-23c3-483b-8f5a-575d5a4c9f20/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 01:41:53,802 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83492a8c-23c3-483b-8f5a-575d5a4c9f20/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 01:41:53,817 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-07 01:41:53,818 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 01:41:53,818 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-11-07 01:41:53,818 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 01:41:53,818 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 01:41:53,819 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-07 01:41:53,819 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 01:41:54,455 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 01:41:54,455 INFO L299 CfgBuilder]: Removed 16 assume(true) statements. [2021-11-07 01:41:54,457 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:41:54 BoogieIcfgContainer [2021-11-07 01:41:54,458 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 01:41:54,459 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 01:41:54,460 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 01:41:54,473 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 01:41:54,473 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:41:53" (1/3) ... [2021-11-07 01:41:54,474 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24ed63b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:41:54, skipping insertion in model container [2021-11-07 01:41:54,474 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:41:53" (2/3) ... [2021-11-07 01:41:54,474 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24ed63b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:41:54, skipping insertion in model container [2021-11-07 01:41:54,475 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:41:54" (3/3) ... [2021-11-07 01:41:54,476 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1230.c [2021-11-07 01:41:54,485 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 01:41:54,485 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-07 01:41:54,534 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 01:41:54,545 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-11-07 01:41:54,546 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-07 01:41:54,560 INFO L276 IsEmpty]: Start isEmpty. Operand has 14 states, 12 states have (on average 1.5833333333333333) internal successors, (19), 13 states have internal predecessors, (19), 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) [2021-11-07 01:41:54,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-07 01:41:54,565 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:41:54,565 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:41:54,566 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:41:54,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:41:54,572 INFO L85 PathProgramCache]: Analyzing trace with hash -844709066, now seen corresponding path program 1 times [2021-11-07 01:41:54,581 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:41:54,582 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886071259] [2021-11-07 01:41:54,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:41:54,583 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:41:54,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:41:54,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:41:54,735 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:41:54,735 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886071259] [2021-11-07 01:41:54,736 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1886071259] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 01:41:54,736 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:41:54,736 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 01:41:54,738 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233629010] [2021-11-07 01:41:54,743 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-07 01:41:54,743 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:41:54,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-07 01:41:54,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 01:41:54,759 INFO L87 Difference]: Start difference. First operand has 14 states, 12 states have (on average 1.5833333333333333) internal successors, (19), 13 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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) [2021-11-07 01:41:54,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:41:54,774 INFO L93 Difference]: Finished difference Result 27 states and 37 transitions. [2021-11-07 01:41:54,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 01:41:54,775 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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 7 [2021-11-07 01:41:54,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:41:54,783 INFO L225 Difference]: With dead ends: 27 [2021-11-07 01:41:54,783 INFO L226 Difference]: Without dead ends: 12 [2021-11-07 01:41:54,786 INFO L786 BasicCegarLoop]: 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 [2021-11-07 01:41:54,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2021-11-07 01:41:54,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2021-11-07 01:41:54,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 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) [2021-11-07 01:41:54,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2021-11-07 01:41:54,818 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 7 [2021-11-07 01:41:54,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:41:54,819 INFO L470 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2021-11-07 01:41:54,819 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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) [2021-11-07 01:41:54,819 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2021-11-07 01:41:54,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-07 01:41:54,820 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:41:54,820 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:41:54,820 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-07 01:41:54,821 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:41:54,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:41:54,822 INFO L85 PathProgramCache]: Analyzing trace with hash -1253567085, now seen corresponding path program 1 times [2021-11-07 01:41:54,822 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:41:54,822 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492301601] [2021-11-07 01:41:54,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:41:54,823 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:41:54,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 01:41:54,878 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-07 01:41:54,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 01:41:54,942 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-07 01:41:54,943 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-11-07 01:41:54,945 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-11-07 01:41:54,946 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-07 01:41:54,950 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1] [2021-11-07 01:41:54,952 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-07 01:41:54,974 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 01:41:54 BoogieIcfgContainer [2021-11-07 01:41:54,974 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-07 01:41:54,975 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-07 01:41:54,975 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-07 01:41:54,975 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-07 01:41:54,976 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:41:54" (3/4) ... [2021-11-07 01:41:54,979 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-07 01:41:54,980 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-07 01:41:54,982 INFO L168 Benchmark]: Toolchain (without parser) took 1755.64 ms. Allocated memory was 86.0 MB in the beginning and 115.3 MB in the end (delta: 29.4 MB). Free memory was 51.5 MB in the beginning and 73.8 MB in the end (delta: -22.3 MB). Peak memory consumption was 6.4 MB. Max. memory is 16.1 GB. [2021-11-07 01:41:54,982 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 86.0 MB. Free memory is still 46.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:41:54,983 INFO L168 Benchmark]: CACSL2BoogieTranslator took 383.60 ms. Allocated memory was 86.0 MB in the beginning and 115.3 MB in the end (delta: 29.4 MB). Free memory was 51.3 MB in the beginning and 90.4 MB in the end (delta: -39.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-07 01:41:54,984 INFO L168 Benchmark]: Boogie Procedure Inliner took 71.21 ms. Allocated memory is still 115.3 MB. Free memory was 90.4 MB in the beginning and 88.6 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-07 01:41:54,985 INFO L168 Benchmark]: Boogie Preprocessor took 51.84 ms. Allocated memory is still 115.3 MB. Free memory was 88.6 MB in the beginning and 87.1 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:41:54,986 INFO L168 Benchmark]: RCFGBuilder took 717.39 ms. Allocated memory is still 115.3 MB. Free memory was 87.1 MB in the beginning and 64.4 MB in the end (delta: 22.7 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. [2021-11-07 01:41:54,986 INFO L168 Benchmark]: TraceAbstraction took 514.73 ms. Allocated memory is still 115.3 MB. Free memory was 63.9 MB in the beginning and 74.3 MB in the end (delta: -10.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:41:54,987 INFO L168 Benchmark]: Witness Printer took 4.88 ms. Allocated memory is still 115.3 MB. Free memory was 74.3 MB in the beginning and 73.8 MB in the end (delta: 492.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:41:54,990 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 86.0 MB. Free memory is still 46.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 383.60 ms. Allocated memory was 86.0 MB in the beginning and 115.3 MB in the end (delta: 29.4 MB). Free memory was 51.3 MB in the beginning and 90.4 MB in the end (delta: -39.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 71.21 ms. Allocated memory is still 115.3 MB. Free memory was 90.4 MB in the beginning and 88.6 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 51.84 ms. Allocated memory is still 115.3 MB. Free memory was 88.6 MB in the beginning and 87.1 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 717.39 ms. Allocated memory is still 115.3 MB. Free memory was 87.1 MB in the beginning and 64.4 MB in the end (delta: 22.7 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 514.73 ms. Allocated memory is still 115.3 MB. Free memory was 63.9 MB in the beginning and 74.3 MB in the end (delta: -10.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 4.88 ms. Allocated memory is still 115.3 MB. Free memory was 74.3 MB in the beginning and 73.8 MB in the end (delta: 492.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * 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: 68]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 18, overapproximation of someBinaryArithmeticDOUBLEoperation at line 63. Possible FailurePath: [L63] double x = 0.0 / 0.0; [L64] double y = 0.0 / 0.0; [L20] __uint32_t msw, lsw; [L23] ieee_double_shape_type ew_u; [L24] ew_u.value = (x) [L25] EXPR ew_u.parts.msw [L25] (msw) = ew_u.parts.msw [L26] EXPR ew_u.parts.lsw [L26] (lsw) = ew_u.parts.lsw [L29-L30] COND FALSE !((msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000)) [L32-L33] COND FALSE !((msw >= 0x00100000 && msw <= 0x7fefffff) || (msw >= 0x80100000 && msw <= 0xffefffff)) [L35-L36] COND FALSE !(( msw <= 0x000fffff) || (msw >= 0x80000000 && msw <= 0x800fffff)) [L39-L40] COND FALSE !((msw == 0x7ff00000 && lsw == 0x00000000) || (msw == 0xfff00000 && lsw == 0x00000000)) [L43] return 0; [L47] COND TRUE __fpclassify_double(x) == 0 [L48] return y; [L65] double res = fmin_double(x, y); [L18] return x != x; [L67] COND TRUE !isnan_double(res) [L68] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 14 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.4s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 14 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, 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=14occurred 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, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 15 NumberOfCodeBlocks, 15 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 6 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 [2021-11-07 01:41:55,043 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83492a8c-23c3-483b-8f5a-575d5a4c9f20/bin/utaipan-UUZaoUuFF8/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/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83492a8c-23c3-483b-8f5a-575d5a4c9f20/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83492a8c-23c3-483b-8f5a-575d5a4c9f20/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83492a8c-23c3-483b-8f5a-575d5a4c9f20/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83492a8c-23c3-483b-8f5a-575d5a4c9f20/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1230.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83492a8c-23c3-483b-8f5a-575d5a4c9f20/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83492a8c-23c3-483b-8f5a-575d5a4c9f20/bin/utaipan-UUZaoUuFF8 --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 7a8b477e0de82621230934ea5797a52ab61045346694bc3bac8acbd53f389ba3 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:41:57,661 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:41:57,663 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:41:57,710 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:41:57,711 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:41:57,713 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:41:57,715 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:41:57,718 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:41:57,720 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:41:57,722 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:41:57,723 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:41:57,725 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:41:57,726 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:41:57,727 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:41:57,730 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:41:57,733 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:41:57,736 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:41:57,742 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:41:57,750 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:41:57,759 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:41:57,762 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:41:57,777 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:41:57,779 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:41:57,781 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:41:57,785 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:41:57,786 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:41:57,786 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:41:57,788 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:41:57,789 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:41:57,790 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:41:57,797 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:41:57,798 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:41:57,800 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:41:57,801 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:41:57,803 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:41:57,804 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:41:57,806 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:41:57,806 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:41:57,807 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:41:57,808 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:41:57,810 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:41:57,812 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83492a8c-23c3-483b-8f5a-575d5a4c9f20/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-07 01:41:57,868 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:41:57,869 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:41:57,870 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:41:57,871 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:41:57,871 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:41:57,871 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:41:57,872 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:41:57,872 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:41:57,872 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:41:57,874 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:41:57,875 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 01:41:57,876 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 01:41:57,876 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:41:57,877 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:41:57,877 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:41:57,877 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:41:57,877 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:41:57,878 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 01:41:57,878 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 01:41:57,878 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 01:41:57,878 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:41:57,879 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:41:57,879 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:41:57,879 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:41:57,879 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 01:41:57,880 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:41:57,880 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:41:57,880 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:41:57,880 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:41:57,881 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:41:57,881 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-07 01:41:57,881 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 01:41:57,881 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:41:57,882 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:41:57,882 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:41:57,882 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_83492a8c-23c3-483b-8f5a-575d5a4c9f20/bin/utaipan-UUZaoUuFF8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83492a8c-23c3-483b-8f5a-575d5a4c9f20/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7a8b477e0de82621230934ea5797a52ab61045346694bc3bac8acbd53f389ba3 [2021-11-07 01:41:58,399 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:41:58,433 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:41:58,437 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:41:58,438 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:41:58,439 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:41:58,440 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83492a8c-23c3-483b-8f5a-575d5a4c9f20/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/float-newlib/double_req_bl_1230.c [2021-11-07 01:41:58,523 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83492a8c-23c3-483b-8f5a-575d5a4c9f20/bin/utaipan-UUZaoUuFF8/data/481f9fafa/715dcc85d2014b93a34a56d262c6b7c9/FLAGde0281f93 [2021-11-07 01:41:59,188 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:41:59,191 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83492a8c-23c3-483b-8f5a-575d5a4c9f20/sv-benchmarks/c/float-newlib/double_req_bl_1230.c [2021-11-07 01:41:59,203 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83492a8c-23c3-483b-8f5a-575d5a4c9f20/bin/utaipan-UUZaoUuFF8/data/481f9fafa/715dcc85d2014b93a34a56d262c6b7c9/FLAGde0281f93 [2021-11-07 01:41:59,509 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83492a8c-23c3-483b-8f5a-575d5a4c9f20/bin/utaipan-UUZaoUuFF8/data/481f9fafa/715dcc85d2014b93a34a56d262c6b7c9 [2021-11-07 01:41:59,512 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:41:59,514 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:41:59,516 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:41:59,516 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:41:59,520 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:41:59,522 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:41:59" (1/1) ... [2021-11-07 01:41:59,523 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@369f17b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:41:59, skipping insertion in model container [2021-11-07 01:41:59,524 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:41:59" (1/1) ... [2021-11-07 01:41:59,550 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:41:59,568 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:41:59,744 WARN L228 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_83492a8c-23c3-483b-8f5a-575d5a4c9f20/sv-benchmarks/c/float-newlib/double_req_bl_1230.c[1667,1680] [2021-11-07 01:41:59,748 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:41:59,761 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 01:41:59,791 WARN L228 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_83492a8c-23c3-483b-8f5a-575d5a4c9f20/sv-benchmarks/c/float-newlib/double_req_bl_1230.c[1667,1680] [2021-11-07 01:41:59,792 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:41:59,837 INFO L208 MainTranslator]: Completed translation [2021-11-07 01:41:59,838 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:41:59 WrapperNode [2021-11-07 01:41:59,838 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:41:59,840 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 01:41:59,840 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 01:41:59,840 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 01:41:59,848 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:41:59" (1/1) ... [2021-11-07 01:41:59,863 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:41:59" (1/1) ... [2021-11-07 01:41:59,886 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 01:41:59,887 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 01:41:59,887 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 01:41:59,887 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 01:41:59,896 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:41:59" (1/1) ... [2021-11-07 01:41:59,896 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:41:59" (1/1) ... [2021-11-07 01:41:59,901 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:41:59" (1/1) ... [2021-11-07 01:41:59,901 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:41:59" (1/1) ... [2021-11-07 01:41:59,910 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:41:59" (1/1) ... [2021-11-07 01:41:59,914 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:41:59" (1/1) ... [2021-11-07 01:41:59,917 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:41:59" (1/1) ... [2021-11-07 01:41:59,920 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 01:41:59,921 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 01:41:59,922 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 01:41:59,922 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 01:41:59,923 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:41:59" (1/1) ... [2021-11-07 01:41:59,930 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:41:59,940 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83492a8c-23c3-483b-8f5a-575d5a4c9f20/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:41:59,969 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83492a8c-23c3-483b-8f5a-575d5a4c9f20/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 01:41:59,997 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83492a8c-23c3-483b-8f5a-575d5a4c9f20/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 01:42:00,016 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2021-11-07 01:42:00,016 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-07 01:42:00,017 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 01:42:00,017 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-07 01:42:00,017 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 01:42:00,017 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 01:42:00,017 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 01:42:00,531 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 01:42:00,535 INFO L299 CfgBuilder]: Removed 16 assume(true) statements. [2021-11-07 01:42:00,537 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:42:00 BoogieIcfgContainer [2021-11-07 01:42:00,538 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 01:42:00,540 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 01:42:00,540 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 01:42:00,543 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 01:42:00,543 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:41:59" (1/3) ... [2021-11-07 01:42:00,545 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c414124 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:42:00, skipping insertion in model container [2021-11-07 01:42:00,545 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:41:59" (2/3) ... [2021-11-07 01:42:00,546 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c414124 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:42:00, skipping insertion in model container [2021-11-07 01:42:00,546 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:42:00" (3/3) ... [2021-11-07 01:42:00,547 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1230.c [2021-11-07 01:42:00,554 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 01:42:00,554 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-07 01:42:00,619 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 01:42:00,631 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-11-07 01:42:00,631 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-07 01:42:00,646 INFO L276 IsEmpty]: Start isEmpty. Operand has 28 states, 26 states have (on average 1.6538461538461537) internal successors, (43), 27 states have internal predecessors, (43), 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) [2021-11-07 01:42:00,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-07 01:42:00,665 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:42:00,666 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:42:00,667 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:42:00,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:42:00,673 INFO L85 PathProgramCache]: Analyzing trace with hash -958093107, now seen corresponding path program 1 times [2021-11-07 01:42:00,685 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:42:00,685 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1470713371] [2021-11-07 01:42:00,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:42:00,686 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:42:00,687 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83492a8c-23c3-483b-8f5a-575d5a4c9f20/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:42:00,690 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83492a8c-23c3-483b-8f5a-575d5a4c9f20/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:42:00,723 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83492a8c-23c3-483b-8f5a-575d5a4c9f20/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 01:42:00,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:42:00,800 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-07 01:42:00,804 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:42:00,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:42:00,875 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:42:00,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:42:00,945 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:42:00,945 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1470713371] [2021-11-07 01:42:00,959 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1470713371] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:42:00,959 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:42:00,960 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-07 01:42:00,962 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166492932] [2021-11-07 01:42:00,967 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-07 01:42:00,968 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:42:00,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-07 01:42:00,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 01:42:00,994 INFO L87 Difference]: Start difference. First operand has 28 states, 26 states have (on average 1.6538461538461537) internal successors, (43), 27 states have internal predecessors, (43), 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) [2021-11-07 01:42:01,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:42:01,019 INFO L93 Difference]: Finished difference Result 54 states and 84 transitions. [2021-11-07 01:42:01,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 01:42:01,021 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 [2021-11-07 01:42:01,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:42:01,032 INFO L225 Difference]: With dead ends: 54 [2021-11-07 01:42:01,033 INFO L226 Difference]: Without dead ends: 25 [2021-11-07 01:42:01,036 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 01:42:01,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2021-11-07 01:42:01,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2021-11-07 01:42:01,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 24 states have (on average 1.4583333333333333) internal successors, (35), 24 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) [2021-11-07 01:42:01,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 35 transitions. [2021-11-07 01:42:01,080 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 35 transitions. Word has length 10 [2021-11-07 01:42:01,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:42:01,081 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 35 transitions. [2021-11-07 01:42:01,081 INFO L471 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) [2021-11-07 01:42:01,082 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 35 transitions. [2021-11-07 01:42:01,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-07 01:42:01,083 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:42:01,083 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:42:01,105 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83492a8c-23c3-483b-8f5a-575d5a4c9f20/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-07 01:42:01,305 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83492a8c-23c3-483b-8f5a-575d5a4c9f20/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:42:01,306 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:42:01,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:42:01,307 INFO L85 PathProgramCache]: Analyzing trace with hash 1001566992, now seen corresponding path program 1 times [2021-11-07 01:42:01,308 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:42:01,309 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [926005981] [2021-11-07 01:42:01,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:42:01,309 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:42:01,310 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83492a8c-23c3-483b-8f5a-575d5a4c9f20/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:42:01,312 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83492a8c-23c3-483b-8f5a-575d5a4c9f20/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:42:01,365 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83492a8c-23c3-483b-8f5a-575d5a4c9f20/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-07 01:42:01,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:42:01,462 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:42:01,464 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:42:01,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:42:01,537 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:42:01,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:42:01,591 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:42:01,591 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [926005981] [2021-11-07 01:42:01,592 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [926005981] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:42:01,592 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:42:01,592 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-07 01:42:01,592 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903040678] [2021-11-07 01:42:01,594 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 01:42:01,594 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:42:01,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 01:42:01,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-07 01:42:01,597 INFO L87 Difference]: Start difference. First operand 25 states and 35 transitions. Second operand has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:42:01,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:42:01,695 INFO L93 Difference]: Finished difference Result 52 states and 65 transitions. [2021-11-07 01:42:01,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 01:42:01,696 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-11-07 01:42:01,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:42:01,697 INFO L225 Difference]: With dead ends: 52 [2021-11-07 01:42:01,698 INFO L226 Difference]: Without dead ends: 47 [2021-11-07 01:42:01,699 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-07 01:42:01,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2021-11-07 01:42:01,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 27. [2021-11-07 01:42:01,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.4230769230769231) internal successors, (37), 26 states have internal predecessors, (37), 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) [2021-11-07 01:42:01,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 37 transitions. [2021-11-07 01:42:01,706 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 37 transitions. Word has length 11 [2021-11-07 01:42:01,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:42:01,707 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 37 transitions. [2021-11-07 01:42:01,707 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:42:01,707 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 37 transitions. [2021-11-07 01:42:01,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-07 01:42:01,708 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:42:01,708 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:42:01,726 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83492a8c-23c3-483b-8f5a-575d5a4c9f20/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-07 01:42:01,926 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83492a8c-23c3-483b-8f5a-575d5a4c9f20/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:42:01,926 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:42:01,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:42:01,927 INFO L85 PathProgramCache]: Analyzing trace with hash 1219229111, now seen corresponding path program 1 times [2021-11-07 01:42:01,928 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:42:01,929 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [250655529] [2021-11-07 01:42:01,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:42:01,929 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:42:01,929 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83492a8c-23c3-483b-8f5a-575d5a4c9f20/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:42:01,939 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83492a8c-23c3-483b-8f5a-575d5a4c9f20/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:42:01,953 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83492a8c-23c3-483b-8f5a-575d5a4c9f20/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-07 01:42:02,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:42:02,071 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-07 01:42:02,073 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:42:02,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:42:02,466 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:42:02,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:42:02,718 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:42:02,718 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [250655529] [2021-11-07 01:42:02,719 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [250655529] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:42:02,719 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:42:02,719 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2021-11-07 01:42:02,720 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613293169] [2021-11-07 01:42:02,720 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-07 01:42:02,721 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:42:02,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-07 01:42:02,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-11-07 01:42:02,723 INFO L87 Difference]: Start difference. First operand 27 states and 37 transitions. Second operand has 10 states, 10 states have (on average 2.6) internal successors, (26), 10 states have internal predecessors, (26), 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) [2021-11-07 01:42:03,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:42:03,881 INFO L93 Difference]: Finished difference Result 36 states and 45 transitions. [2021-11-07 01:42:03,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 01:42:03,882 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.6) internal successors, (26), 10 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-11-07 01:42:03,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:42:03,884 INFO L225 Difference]: With dead ends: 36 [2021-11-07 01:42:03,884 INFO L226 Difference]: Without dead ends: 27 [2021-11-07 01:42:03,886 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2021-11-07 01:42:03,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-11-07 01:42:03,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 25. [2021-11-07 01:42:03,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 24 states have (on average 1.375) internal successors, (33), 24 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) [2021-11-07 01:42:03,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 33 transitions. [2021-11-07 01:42:03,892 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 33 transitions. Word has length 14 [2021-11-07 01:42:03,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:42:03,893 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 33 transitions. [2021-11-07 01:42:03,894 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.6) internal successors, (26), 10 states have internal predecessors, (26), 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) [2021-11-07 01:42:03,894 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 33 transitions. [2021-11-07 01:42:03,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-07 01:42:03,895 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:42:03,895 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:42:03,917 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83492a8c-23c3-483b-8f5a-575d5a4c9f20/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-07 01:42:04,110 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83492a8c-23c3-483b-8f5a-575d5a4c9f20/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:42:04,111 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:42:04,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:42:04,111 INFO L85 PathProgramCache]: Analyzing trace with hash 1012428811, now seen corresponding path program 1 times [2021-11-07 01:42:04,112 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:42:04,112 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [613022254] [2021-11-07 01:42:04,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:42:04,113 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:42:04,113 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83492a8c-23c3-483b-8f5a-575d5a4c9f20/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:42:04,114 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83492a8c-23c3-483b-8f5a-575d5a4c9f20/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:42:04,117 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83492a8c-23c3-483b-8f5a-575d5a4c9f20/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-07 01:42:04,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:42:04,253 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:42:04,254 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:42:04,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:42:04,346 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:42:04,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:42:04,421 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:42:04,422 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [613022254] [2021-11-07 01:42:04,423 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [613022254] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:42:04,423 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:42:04,423 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-07 01:42:04,423 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073282094] [2021-11-07 01:42:04,425 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 01:42:04,425 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:42:04,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 01:42:04,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-07 01:42:04,427 INFO L87 Difference]: Start difference. First operand 25 states and 33 transitions. Second operand has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 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) [2021-11-07 01:42:04,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:42:04,564 INFO L93 Difference]: Finished difference Result 52 states and 59 transitions. [2021-11-07 01:42:04,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 01:42:04,565 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-11-07 01:42:04,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:42:04,566 INFO L225 Difference]: With dead ends: 52 [2021-11-07 01:42:04,566 INFO L226 Difference]: Without dead ends: 47 [2021-11-07 01:42:04,566 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-07 01:42:04,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2021-11-07 01:42:04,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 27. [2021-11-07 01:42:04,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.3461538461538463) internal successors, (35), 26 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) [2021-11-07 01:42:04,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 35 transitions. [2021-11-07 01:42:04,574 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 35 transitions. Word has length 16 [2021-11-07 01:42:04,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:42:04,575 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 35 transitions. [2021-11-07 01:42:04,575 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 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) [2021-11-07 01:42:04,575 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 35 transitions. [2021-11-07 01:42:04,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-07 01:42:04,576 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:42:04,576 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:42:04,597 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83492a8c-23c3-483b-8f5a-575d5a4c9f20/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-07 01:42:04,797 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83492a8c-23c3-483b-8f5a-575d5a4c9f20/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:42:04,797 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:42:04,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:42:04,798 INFO L85 PathProgramCache]: Analyzing trace with hash -356841937, now seen corresponding path program 1 times [2021-11-07 01:42:04,798 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:42:04,798 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [708292073] [2021-11-07 01:42:04,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:42:04,798 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:42:04,799 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83492a8c-23c3-483b-8f5a-575d5a4c9f20/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:42:04,800 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83492a8c-23c3-483b-8f5a-575d5a4c9f20/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:42:04,802 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83492a8c-23c3-483b-8f5a-575d5a4c9f20/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-07 01:42:04,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:42:04,938 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-07 01:42:04,940 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:42:05,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:42:05,298 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:42:05,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:42:05,549 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:42:05,549 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [708292073] [2021-11-07 01:42:05,550 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [708292073] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:42:05,550 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:42:05,550 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 12 [2021-11-07 01:42:05,550 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3885515] [2021-11-07 01:42:05,551 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-07 01:42:05,551 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:42:05,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-07 01:42:05,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-11-07 01:42:05,552 INFO L87 Difference]: Start difference. First operand 27 states and 35 transitions. Second operand has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 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) [2021-11-07 01:42:06,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:42:06,538 INFO L93 Difference]: Finished difference Result 32 states and 39 transitions. [2021-11-07 01:42:06,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-07 01:42:06,543 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 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) Word has length 18 [2021-11-07 01:42:06,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:42:06,544 INFO L225 Difference]: With dead ends: 32 [2021-11-07 01:42:06,544 INFO L226 Difference]: Without dead ends: 23 [2021-11-07 01:42:06,545 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 3 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2021-11-07 01:42:06,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-11-07 01:42:06,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2021-11-07 01:42:06,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 22 states have internal predecessors, (26), 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) [2021-11-07 01:42:06,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2021-11-07 01:42:06,549 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 18 [2021-11-07 01:42:06,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:42:06,549 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2021-11-07 01:42:06,550 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 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) [2021-11-07 01:42:06,550 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2021-11-07 01:42:06,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-07 01:42:06,550 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:42:06,551 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:42:06,571 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83492a8c-23c3-483b-8f5a-575d5a4c9f20/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-07 01:42:06,765 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83492a8c-23c3-483b-8f5a-575d5a4c9f20/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:42:06,766 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:42:06,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:42:06,767 INFO L85 PathProgramCache]: Analyzing trace with hash -208376157, now seen corresponding path program 1 times [2021-11-07 01:42:06,767 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:42:06,767 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [99913949] [2021-11-07 01:42:06,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:42:06,767 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:42:06,768 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83492a8c-23c3-483b-8f5a-575d5a4c9f20/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:42:06,769 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83492a8c-23c3-483b-8f5a-575d5a4c9f20/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:42:06,775 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83492a8c-23c3-483b-8f5a-575d5a4c9f20/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-07 01:42:06,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:42:06,909 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-07 01:42:06,911 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:42:07,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:42:07,206 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:42:07,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:42:07,362 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:42:07,362 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [99913949] [2021-11-07 01:42:07,363 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [99913949] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:42:07,363 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:42:07,363 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2021-11-07 01:42:07,363 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603056754] [2021-11-07 01:42:07,363 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-07 01:42:07,364 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:42:07,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-07 01:42:07,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-11-07 01:42:07,365 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand has 10 states, 10 states have (on average 3.6) internal successors, (36), 10 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) [2021-11-07 01:42:07,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:42:07,728 INFO L93 Difference]: Finished difference Result 23 states and 26 transitions. [2021-11-07 01:42:07,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 01:42:07,728 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.6) internal successors, (36), 10 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) Word has length 19 [2021-11-07 01:42:07,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:42:07,729 INFO L225 Difference]: With dead ends: 23 [2021-11-07 01:42:07,729 INFO L226 Difference]: Without dead ends: 0 [2021-11-07 01:42:07,729 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2021-11-07 01:42:07,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-07 01:42:07,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-07 01:42:07,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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) [2021-11-07 01:42:07,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-07 01:42:07,730 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2021-11-07 01:42:07,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:42:07,730 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-07 01:42:07,730 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.6) internal successors, (36), 10 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) [2021-11-07 01:42:07,731 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-07 01:42:07,731 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-07 01:42:07,733 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-11-07 01:42:07,745 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83492a8c-23c3-483b-8f5a-575d5a4c9f20/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-07 01:42:07,941 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83492a8c-23c3-483b-8f5a-575d5a4c9f20/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:42:07,943 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-11-07 01:42:07,946 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:42:07,990 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:42:07,997 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:42:08,010 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:42:08,020 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:42:08,022 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:42:08,022 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:42:08,294 INFO L857 garLoopResultBuilder]: For program point L52(line 52) no Hoare annotation was computed. [2021-11-07 01:42:08,294 INFO L857 garLoopResultBuilder]: For program point L52-2(line 52) no Hoare annotation was computed. [2021-11-07 01:42:08,295 INFO L853 garLoopResultBuilder]: At program point L52-3(lines 46 53) the Hoare annotation is: (and (exists ((currentRoundingMode RoundingMode)) (= (fp.div currentRoundingMode (_ +zero 11 53) (_ +zero 11 53)) ULTIMATE.start_fmin_double_~y)) (exists ((currentRoundingMode RoundingMode)) (= |ULTIMATE.start_fmin_double_#res| (fp.div currentRoundingMode (_ +zero 11 53) (_ +zero 11 53))))) [2021-11-07 01:42:08,295 INFO L857 garLoopResultBuilder]: For program point L32(lines 32 43) no Hoare annotation was computed. [2021-11-07 01:42:08,295 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-11-07 01:42:08,295 INFO L857 garLoopResultBuilder]: For program point L32-1(lines 32 43) no Hoare annotation was computed. [2021-11-07 01:42:08,295 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-11-07 01:42:08,295 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-11-07 01:42:08,295 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 68) no Hoare annotation was computed. [2021-11-07 01:42:08,295 INFO L857 garLoopResultBuilder]: For program point L49(lines 49 50) no Hoare annotation was computed. [2021-11-07 01:42:08,296 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-11-07 01:42:08,296 INFO L857 garLoopResultBuilder]: For program point L67(lines 67 70) no Hoare annotation was computed. [2021-11-07 01:42:08,296 INFO L857 garLoopResultBuilder]: For program point L22-1(lines 22 27) no Hoare annotation was computed. [2021-11-07 01:42:08,296 INFO L853 garLoopResultBuilder]: At program point L22-2(lines 22 27) the Hoare annotation is: (and (not (fp.eq ULTIMATE.start_fmin_double_~y ULTIMATE.start_fmin_double_~y)) (not (fp.eq ULTIMATE.start_fmin_double_~x ULTIMATE.start_fmin_double_~x))) [2021-11-07 01:42:08,296 INFO L857 garLoopResultBuilder]: For program point L22-3(lines 19 44) no Hoare annotation was computed. [2021-11-07 01:42:08,296 INFO L853 garLoopResultBuilder]: At program point L18(line 18) the Hoare annotation is: (and (exists ((currentRoundingMode RoundingMode)) (= (fp.div currentRoundingMode (_ +zero 11 53) (_ +zero 11 53)) ULTIMATE.start_fmin_double_~y)) (= (_ bv1 32) |ULTIMATE.start_isnan_double_#res|) (exists ((currentRoundingMode RoundingMode)) (= |ULTIMATE.start_fmin_double_#res| (fp.div currentRoundingMode (_ +zero 11 53) (_ +zero 11 53))))) [2021-11-07 01:42:08,296 INFO L857 garLoopResultBuilder]: For program point L22-5(lines 22 27) no Hoare annotation was computed. [2021-11-07 01:42:08,296 INFO L853 garLoopResultBuilder]: At program point L22-6(lines 22 27) the Hoare annotation is: (and (not (fp.eq ULTIMATE.start_fmin_double_~y ULTIMATE.start_fmin_double_~y)) (not (fp.eq ULTIMATE.start_fmin_double_~x ULTIMATE.start_fmin_double_~x))) [2021-11-07 01:42:08,297 INFO L857 garLoopResultBuilder]: For program point L47(lines 47 48) no Hoare annotation was computed. [2021-11-07 01:42:08,297 INFO L857 garLoopResultBuilder]: For program point L22-7(lines 19 44) no Hoare annotation was computed. [2021-11-07 01:42:08,297 INFO L853 garLoopResultBuilder]: At program point L43(lines 19 44) the Hoare annotation is: (and (not (fp.eq ULTIMATE.start_fmin_double_~y ULTIMATE.start_fmin_double_~y)) (not (fp.eq ULTIMATE.start_fmin_double_~x ULTIMATE.start_fmin_double_~x))) [2021-11-07 01:42:08,297 INFO L853 garLoopResultBuilder]: At program point L43-1(lines 19 44) the Hoare annotation is: (let ((.cse0 (not (fp.eq ULTIMATE.start_fmin_double_~y ULTIMATE.start_fmin_double_~y)))) (or (and .cse0 (not (= |ULTIMATE.start___fpclassify_double_#res| (_ bv0 32)))) (and .cse0 (not (fp.eq ULTIMATE.start_fmin_double_~x ULTIMATE.start_fmin_double_~x))))) [2021-11-07 01:42:08,297 INFO L860 garLoopResultBuilder]: At program point L72(lines 55 73) the Hoare annotation is: true [2021-11-07 01:42:08,297 INFO L857 garLoopResultBuilder]: For program point L39(lines 39 43) no Hoare annotation was computed. [2021-11-07 01:42:08,297 INFO L857 garLoopResultBuilder]: For program point L39-1(lines 39 43) no Hoare annotation was computed. [2021-11-07 01:42:08,297 INFO L857 garLoopResultBuilder]: For program point L68(line 68) no Hoare annotation was computed. [2021-11-07 01:42:08,298 INFO L857 garLoopResultBuilder]: For program point L35(lines 35 43) no Hoare annotation was computed. [2021-11-07 01:42:08,298 INFO L857 garLoopResultBuilder]: For program point L35-1(lines 35 43) no Hoare annotation was computed. [2021-11-07 01:42:08,301 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2021-11-07 01:42:08,302 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-07 01:42:08,308 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-11-07 01:42:08,309 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-11-07 01:42:08,316 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-11-07 01:42:08,316 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-11-07 01:42:08,318 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-11-07 01:42:08,318 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-11-07 01:42:08,319 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-11-07 01:42:08,319 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-11-07 01:42:08,320 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 01:42:08 BoogieIcfgContainer [2021-11-07 01:42:08,320 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-07 01:42:08,321 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-07 01:42:08,321 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-07 01:42:08,321 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-07 01:42:08,322 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:42:00" (3/4) ... [2021-11-07 01:42:08,325 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-07 01:42:08,336 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2021-11-07 01:42:08,336 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2021-11-07 01:42:08,337 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-11-07 01:42:08,337 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-07 01:42:08,361 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == y) && (\exists currentRoundingMode : FloatRoundingMode :: \result == ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) [2021-11-07 01:42:08,362 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == y) && 1bv32 == \result) && (\exists currentRoundingMode : FloatRoundingMode :: \result == ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) [2021-11-07 01:42:08,362 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (!~fp.eq~DOUBLE(y, y) && !(\result == 0bv32)) || (!~fp.eq~DOUBLE(y, y) && !~fp.eq~DOUBLE(x, x)) [2021-11-07 01:42:08,382 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83492a8c-23c3-483b-8f5a-575d5a4c9f20/bin/utaipan-UUZaoUuFF8/witness.graphml [2021-11-07 01:42:08,382 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-07 01:42:08,384 INFO L168 Benchmark]: Toolchain (without parser) took 8868.61 ms. Allocated memory was 75.5 MB in the beginning and 96.5 MB in the end (delta: 21.0 MB). Free memory was 41.0 MB in the beginning and 31.9 MB in the end (delta: 9.1 MB). Peak memory consumption was 30.7 MB. Max. memory is 16.1 GB. [2021-11-07 01:42:08,384 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 75.5 MB. Free memory was 57.4 MB in the beginning and 57.3 MB in the end (delta: 63.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:42:08,385 INFO L168 Benchmark]: CACSL2BoogieTranslator took 322.98 ms. Allocated memory is still 75.5 MB. Free memory was 40.8 MB in the beginning and 59.0 MB in the end (delta: -18.2 MB). Peak memory consumption was 4.6 MB. Max. memory is 16.1 GB. [2021-11-07 01:42:08,385 INFO L168 Benchmark]: Boogie Procedure Inliner took 46.69 ms. Allocated memory is still 75.5 MB. Free memory was 58.8 MB in the beginning and 57.2 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:42:08,386 INFO L168 Benchmark]: Boogie Preprocessor took 33.67 ms. Allocated memory is still 75.5 MB. Free memory was 57.0 MB in the beginning and 55.5 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-07 01:42:08,386 INFO L168 Benchmark]: RCFGBuilder took 616.72 ms. Allocated memory is still 75.5 MB. Free memory was 55.5 MB in the beginning and 42.3 MB in the end (delta: 13.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-11-07 01:42:08,387 INFO L168 Benchmark]: TraceAbstraction took 7780.57 ms. Allocated memory was 75.5 MB in the beginning and 96.5 MB in the end (delta: 21.0 MB). Free memory was 41.9 MB in the beginning and 35.3 MB in the end (delta: 6.6 MB). Peak memory consumption was 30.2 MB. Max. memory is 16.1 GB. [2021-11-07 01:42:08,387 INFO L168 Benchmark]: Witness Printer took 61.16 ms. Allocated memory is still 96.5 MB. Free memory was 35.3 MB in the beginning and 31.9 MB in the end (delta: 3.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-11-07 01:42:08,390 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 75.5 MB. Free memory was 57.4 MB in the beginning and 57.3 MB in the end (delta: 63.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 322.98 ms. Allocated memory is still 75.5 MB. Free memory was 40.8 MB in the beginning and 59.0 MB in the end (delta: -18.2 MB). Peak memory consumption was 4.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 46.69 ms. Allocated memory is still 75.5 MB. Free memory was 58.8 MB in the beginning and 57.2 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 33.67 ms. Allocated memory is still 75.5 MB. Free memory was 57.0 MB in the beginning and 55.5 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 616.72 ms. Allocated memory is still 75.5 MB. Free memory was 55.5 MB in the beginning and 42.3 MB in the end (delta: 13.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 7780.57 ms. Allocated memory was 75.5 MB in the beginning and 96.5 MB in the end (delta: 21.0 MB). Free memory was 41.9 MB in the beginning and 35.3 MB in the end (delta: 6.6 MB). Peak memory consumption was 30.2 MB. Max. memory is 16.1 GB. * Witness Printer took 61.16 ms. Allocated memory is still 96.5 MB. Free memory was 35.3 MB in the beginning and 31.9 MB in the end (delta: 3.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] * 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 - PositiveResult [Line: 68]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 28 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 7.6s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 182 SDtfs, 126 SDslu, 523 SDs, 0 SdLazy, 132 SolverSat, 21 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 181 GetRequests, 130 SyntacticMatches, 3 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 7 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 1.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=28occurred in iteration=0, InterpolantAutomatonStates: 33, 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, 6 MinimizatonAttempts, 42 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 7 PreInvPairs, 19 NumberOfFragments, 80 HoareAnnotationTreeSize, 7 FomulaSimplifications, 190 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 51 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 2.1s InterpolantComputationTime, 88 NumberOfCodeBlocks, 88 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 164 ConstructedInterpolants, 36 QuantifiedInterpolants, 538 SizeOfPredicates, 32 NumberOfNonLiveVariables, 367 ConjunctsInSsa, 38 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 18]: Loop Invariant [2021-11-07 01:42:08,398 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-11-07 01:42:08,398 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-11-07 01:42:08,398 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-11-07 01:42:08,399 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] Derived loop invariant: ((\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == y) && 1bv32 == \result) && (\exists currentRoundingMode : FloatRoundingMode :: \result == ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: (!~fp.eq~DOUBLE(y, y) && !(\result == 0bv32)) || (!~fp.eq~DOUBLE(y, y) && !~fp.eq~DOUBLE(x, x)) - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: !~fp.eq~DOUBLE(y, y) && !~fp.eq~DOUBLE(x, x) - InvariantResult [Line: 46]: Loop Invariant [2021-11-07 01:42:08,400 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-11-07 01:42:08,400 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-11-07 01:42:08,401 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-11-07 01:42:08,401 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] Derived loop invariant: (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == y) && (\exists currentRoundingMode : FloatRoundingMode :: \result == ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: !~fp.eq~DOUBLE(y, y) && !~fp.eq~DOUBLE(x, x) - InvariantResult [Line: 55]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: !~fp.eq~DOUBLE(y, y) && !~fp.eq~DOUBLE(x, x) RESULT: Ultimate proved your program to be correct! [2021-11-07 01:42:08,456 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83492a8c-23c3-483b-8f5a-575d5a4c9f20/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE