./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/double_req_bl_0930.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0f8a17c6 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a672e3b-15ac-4498-86ab-c956421e2cd5/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a672e3b-15ac-4498-86ab-c956421e2cd5/bin/utaipan-UbGMyvGFUs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a672e3b-15ac-4498-86ab-c956421e2cd5/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a672e3b-15ac-4498-86ab-c956421e2cd5/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_0930.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a672e3b-15ac-4498-86ab-c956421e2cd5/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a672e3b-15ac-4498-86ab-c956421e2cd5/bin/utaipan-UbGMyvGFUs --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 8d734d3869a39929ea479cab14eb5865c36aeb805da0fe481c4349ce6c2b3759 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 14:57:31,595 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 14:57:31,597 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 14:57:31,656 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 14:57:31,656 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 14:57:31,660 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 14:57:31,662 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 14:57:31,666 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 14:57:31,669 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 14:57:31,675 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 14:57:31,676 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 14:57:31,678 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 14:57:31,679 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 14:57:31,682 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 14:57:31,684 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 14:57:31,692 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 14:57:31,694 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 14:57:31,695 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 14:57:31,698 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 14:57:31,706 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 14:57:31,708 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 14:57:31,710 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 14:57:31,713 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 14:57:31,714 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 14:57:31,724 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 14:57:31,724 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 14:57:31,725 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 14:57:31,727 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 14:57:31,727 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 14:57:31,729 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 14:57:31,729 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 14:57:31,731 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 14:57:31,733 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 14:57:31,734 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 14:57:31,736 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 14:57:31,736 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 14:57:31,737 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 14:57:31,737 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 14:57:31,738 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 14:57:31,739 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 14:57:31,740 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 14:57:31,740 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a672e3b-15ac-4498-86ab-c956421e2cd5/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-19 14:57:31,792 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 14:57:31,792 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 14:57:31,794 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 14:57:31,794 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 14:57:31,794 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 14:57:31,795 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 14:57:31,795 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 14:57:31,795 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-19 14:57:31,802 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 14:57:31,802 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 14:57:31,804 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-19 14:57:31,804 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-19 14:57:31,804 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 14:57:31,804 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-19 14:57:31,805 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-19 14:57:31,805 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-19 14:57:31,806 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 14:57:31,806 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-19 14:57:31,806 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 14:57:31,807 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-19 14:57:31,807 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 14:57:31,807 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 14:57:31,807 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 14:57:31,808 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 14:57:31,808 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 14:57:31,808 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-19 14:57:31,808 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 14:57:31,809 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 14:57:31,809 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 14:57:31,811 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 14:57:31,811 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 14:57:31,811 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 14:57:31,812 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 14:57:31,812 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 14:57:31,812 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 14:57:31,812 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-19 14:57:31,813 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-19 14:57:31,813 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 14:57:31,813 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 14:57:31,813 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 14:57:31,814 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_3a672e3b-15ac-4498-86ab-c956421e2cd5/bin/utaipan-UbGMyvGFUs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a672e3b-15ac-4498-86ab-c956421e2cd5/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8d734d3869a39929ea479cab14eb5865c36aeb805da0fe481c4349ce6c2b3759 [2021-11-19 14:57:32,148 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 14:57:32,172 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 14:57:32,175 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 14:57:32,176 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 14:57:32,177 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 14:57:32,179 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a672e3b-15ac-4498-86ab-c956421e2cd5/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/float-newlib/double_req_bl_0930.c [2021-11-19 14:57:32,262 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a672e3b-15ac-4498-86ab-c956421e2cd5/bin/utaipan-UbGMyvGFUs/data/8edf84cc4/503093e63d3445db9e28c7591b0b5c0d/FLAG5c4c1087c [2021-11-19 14:57:32,829 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 14:57:32,830 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a672e3b-15ac-4498-86ab-c956421e2cd5/sv-benchmarks/c/float-newlib/double_req_bl_0930.c [2021-11-19 14:57:32,843 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a672e3b-15ac-4498-86ab-c956421e2cd5/bin/utaipan-UbGMyvGFUs/data/8edf84cc4/503093e63d3445db9e28c7591b0b5c0d/FLAG5c4c1087c [2021-11-19 14:57:33,144 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a672e3b-15ac-4498-86ab-c956421e2cd5/bin/utaipan-UbGMyvGFUs/data/8edf84cc4/503093e63d3445db9e28c7591b0b5c0d [2021-11-19 14:57:33,147 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 14:57:33,150 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 14:57:33,155 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 14:57:33,156 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 14:57:33,159 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 14:57:33,160 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:57:33" (1/1) ... [2021-11-19 14:57:33,163 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@678128e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:57:33, skipping insertion in model container [2021-11-19 14:57:33,164 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:57:33" (1/1) ... [2021-11-19 14:57:33,171 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 14:57:33,192 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 14:57:33,390 WARN L230 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_3a672e3b-15ac-4498-86ab-c956421e2cd5/sv-benchmarks/c/float-newlib/double_req_bl_0930.c[3808,3821] [2021-11-19 14:57:33,394 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:57:33,403 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 14:57:33,443 WARN L230 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_3a672e3b-15ac-4498-86ab-c956421e2cd5/sv-benchmarks/c/float-newlib/double_req_bl_0930.c[3808,3821] [2021-11-19 14:57:33,444 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:57:33,463 INFO L208 MainTranslator]: Completed translation [2021-11-19 14:57:33,464 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:57:33 WrapperNode [2021-11-19 14:57:33,464 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 14:57:33,466 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-19 14:57:33,466 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-19 14:57:33,466 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-19 14:57:33,476 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:57:33" (1/1) ... [2021-11-19 14:57:33,485 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:57:33" (1/1) ... [2021-11-19 14:57:33,515 INFO L137 Inliner]: procedures = 18, calls = 32, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 162 [2021-11-19 14:57:33,515 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-19 14:57:33,516 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 14:57:33,516 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 14:57:33,516 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 14:57:33,526 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:57:33" (1/1) ... [2021-11-19 14:57:33,526 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:57:33" (1/1) ... [2021-11-19 14:57:33,530 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:57:33" (1/1) ... [2021-11-19 14:57:33,530 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:57:33" (1/1) ... [2021-11-19 14:57:33,543 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:57:33" (1/1) ... [2021-11-19 14:57:33,549 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:57:33" (1/1) ... [2021-11-19 14:57:33,551 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:57:33" (1/1) ... [2021-11-19 14:57:33,557 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 14:57:33,559 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 14:57:33,559 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 14:57:33,559 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 14:57:33,560 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:57:33" (1/1) ... [2021-11-19 14:57:33,568 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 14:57:33,590 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a672e3b-15ac-4498-86ab-c956421e2cd5/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 14:57:33,602 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a672e3b-15ac-4498-86ab-c956421e2cd5/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 14:57:33,613 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a672e3b-15ac-4498-86ab-c956421e2cd5/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 14:57:33,648 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 14:57:33,649 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-19 14:57:33,649 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-19 14:57:33,649 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-11-19 14:57:33,649 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-19 14:57:33,649 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-11-19 14:57:33,650 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 14:57:33,650 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 14:57:33,650 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-19 14:57:33,650 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-19 14:57:33,752 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 14:57:33,754 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 14:57:33,980 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 14:57:34,083 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 14:57:34,083 INFO L301 CfgBuilder]: Removed 8 assume(true) statements. [2021-11-19 14:57:34,085 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:57:34 BoogieIcfgContainer [2021-11-19 14:57:34,098 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 14:57:34,100 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 14:57:34,101 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 14:57:34,104 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 14:57:34,104 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 02:57:33" (1/3) ... [2021-11-19 14:57:34,105 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e23cb1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:57:34, skipping insertion in model container [2021-11-19 14:57:34,105 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:57:33" (2/3) ... [2021-11-19 14:57:34,105 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e23cb1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:57:34, skipping insertion in model container [2021-11-19 14:57:34,105 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:57:34" (3/3) ... [2021-11-19 14:57:34,107 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_0930.c [2021-11-19 14:57:34,112 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 14:57:34,112 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-19 14:57:34,196 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 14:57:34,209 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 [2021-11-19 14:57:34,209 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-19 14:57:34,241 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 22 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) [2021-11-19 14:57:34,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-19 14:57:34,246 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:57:34,247 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:57:34,247 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:57:34,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:57:34,257 INFO L85 PathProgramCache]: Analyzing trace with hash 1397259804, now seen corresponding path program 1 times [2021-11-19 14:57:34,268 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:57:34,268 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581267069] [2021-11-19 14:57:34,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:57:34,270 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:57:34,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:57:34,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:57:34,463 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 14:57:34,463 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581267069] [2021-11-19 14:57:34,464 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [581267069] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 14:57:34,465 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:57:34,465 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-19 14:57:34,467 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854373848] [2021-11-19 14:57:34,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:57:34,473 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-19 14:57:34,473 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 14:57:34,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-19 14:57:34,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-19 14:57:34,517 INFO L87 Difference]: Start difference. First operand has 23 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 22 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) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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) [2021-11-19 14:57:34,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:57:34,570 INFO L93 Difference]: Finished difference Result 45 states and 71 transitions. [2021-11-19 14:57:34,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-19 14:57:34,573 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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 9 [2021-11-19 14:57:34,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:57:34,582 INFO L225 Difference]: With dead ends: 45 [2021-11-19 14:57:34,583 INFO L226 Difference]: Without dead ends: 21 [2021-11-19 14:57:34,586 INFO L932 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 [2021-11-19 14:57:34,597 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 14:57:34,598 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 23 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 14:57:34,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2021-11-19 14:57:34,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2021-11-19 14:57:34,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 20 states have (on average 1.25) internal successors, (25), 20 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:57:34,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2021-11-19 14:57:34,626 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 9 [2021-11-19 14:57:34,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:57:34,627 INFO L470 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2021-11-19 14:57:34,627 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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) [2021-11-19 14:57:34,627 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2021-11-19 14:57:34,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-19 14:57:34,628 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:57:34,628 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:57:34,628 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-19 14:57:34,629 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:57:34,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:57:34,630 INFO L85 PathProgramCache]: Analyzing trace with hash 1483401345, now seen corresponding path program 1 times [2021-11-19 14:57:34,630 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 14:57:34,630 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286718848] [2021-11-19 14:57:34,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:57:34,631 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 14:57:34,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-19 14:57:34,680 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-19 14:57:34,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-19 14:57:34,800 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-19 14:57:34,800 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-19 14:57:34,803 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-19 14:57:34,814 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-19 14:57:34,823 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2021-11-19 14:57:34,831 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-19 14:57:34,901 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 02:57:34 BoogieIcfgContainer [2021-11-19 14:57:34,901 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-19 14:57:34,902 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-19 14:57:34,903 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-19 14:57:34,903 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-19 14:57:34,904 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:57:34" (3/4) ... [2021-11-19 14:57:34,907 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-19 14:57:34,907 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-19 14:57:34,910 INFO L158 Benchmark]: Toolchain (without parser) took 1758.80ms. Allocated memory was 98.6MB in the beginning and 119.5MB in the end (delta: 21.0MB). Free memory was 69.7MB in the beginning and 90.4MB in the end (delta: -20.7MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 14:57:34,910 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 98.6MB. Free memory was 53.5MB in the beginning and 53.4MB in the end (delta: 92.4kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 14:57:34,916 INFO L158 Benchmark]: CACSL2BoogieTranslator took 309.60ms. Allocated memory was 98.6MB in the beginning and 119.5MB in the end (delta: 21.0MB). Free memory was 69.7MB in the beginning and 92.0MB in the end (delta: -22.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-19 14:57:34,918 INFO L158 Benchmark]: Boogie Procedure Inliner took 49.33ms. Allocated memory is still 119.5MB. Free memory was 92.0MB in the beginning and 89.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-19 14:57:34,922 INFO L158 Benchmark]: Boogie Preprocessor took 41.73ms. Allocated memory is still 119.5MB. Free memory was 89.9MB in the beginning and 88.6MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 14:57:34,924 INFO L158 Benchmark]: RCFGBuilder took 540.07ms. Allocated memory is still 119.5MB. Free memory was 88.6MB in the beginning and 72.7MB in the end (delta: 15.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2021-11-19 14:57:34,925 INFO L158 Benchmark]: TraceAbstraction took 801.18ms. Allocated memory is still 119.5MB. Free memory was 72.3MB in the beginning and 91.2MB in the end (delta: -18.9MB). Peak memory consumption was 28.7MB. Max. memory is 16.1GB. [2021-11-19 14:57:34,929 INFO L158 Benchmark]: Witness Printer took 5.09ms. Allocated memory is still 119.5MB. Free memory was 91.2MB in the beginning and 90.4MB in the end (delta: 824.0kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-19 14:57:34,933 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 98.6MB. Free memory was 53.5MB in the beginning and 53.4MB in the end (delta: 92.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 309.60ms. Allocated memory was 98.6MB in the beginning and 119.5MB in the end (delta: 21.0MB). Free memory was 69.7MB in the beginning and 92.0MB in the end (delta: -22.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 49.33ms. Allocated memory is still 119.5MB. Free memory was 92.0MB in the beginning and 89.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 41.73ms. Allocated memory is still 119.5MB. Free memory was 89.9MB in the beginning and 88.6MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 540.07ms. Allocated memory is still 119.5MB. Free memory was 88.6MB in the beginning and 72.7MB in the end (delta: 15.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 801.18ms. Allocated memory is still 119.5MB. Free memory was 72.3MB in the beginning and 91.2MB in the end (delta: -18.9MB). Peak memory consumption was 28.7MB. Max. memory is 16.1GB. * Witness Printer took 5.09ms. Allocated memory is still 119.5MB. Free memory was 91.2MB in the beginning and 90.4MB in the end (delta: 824.0kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 152]: 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 151, overapproximation of bitwiseOr at line 61, overapproximation of someBinaryArithmeticDOUBLEoperation at line 62. Possible FailurePath: [L34-L43] static const double ln2_hi_log = 6.93147180369123816490e-01, ln2_lo_log = 1.90821492927058770002e-10, two54_log = 1.80143985094819840000e+16, Lg1_log = 6.666666666666735130e-01, Lg2_log = 3.999999999940941908e-01, Lg3_log = 2.857142874366239149e-01, Lg4_log = 2.222219843214978396e-01, Lg5_log = 1.818357216161805012e-01, Lg6_log = 1.531383769920937332e-01, Lg7_log = 1.479819860511658591e-01; [L45] static const double zero = 0.0; [L146] double x = 1.0; [L148] CALL, EXPR __ieee754_log(x) [L48] double hfsq, f, s, z, R, w, t1, t2, dk; [L49] __int32_t k, hx, i, j; [L50] __uint32_t lx; VAL [\old(x)=1, Lg1_log=666666666666673513/1000000000000000000, Lg2_log=999999999985235477/2500000000000000000, Lg3_log=2857142874366239149/10000000000000000000, Lg4_log=555554960803744599/2500000000000000000, Lg5_log=454589304040451253/2500000000000000000, Lg6_log=382845942480234333/2500000000000000000, Lg7_log=1479819860511658591/10000000000000000000, ln2_hi_log=69314718036912381649/100000000000000000000, ln2_lo_log=95410746463529385001/500000000000000000000000000000, two54_log=18014398509481984, x=1, zero=0] [L53] ieee_double_shape_type ew_u; [L54] ew_u.value = (x) [L55] EXPR ew_u.parts.msw [L55] (hx) = ew_u.parts.msw [L56] EXPR ew_u.parts.lsw [L56] (lx) = ew_u.parts.lsw [L59] k = 0 VAL [\old(x)=1, hx=0, k=0, Lg1_log=666666666666673513/1000000000000000000, Lg2_log=999999999985235477/2500000000000000000, Lg3_log=2857142874366239149/10000000000000000000, Lg4_log=555554960803744599/2500000000000000000, Lg5_log=454589304040451253/2500000000000000000, Lg6_log=382845942480234333/2500000000000000000, Lg7_log=1479819860511658591/10000000000000000000, ln2_hi_log=69314718036912381649/100000000000000000000, ln2_lo_log=95410746463529385001/500000000000000000000000000000, lx=1, two54_log=18014398509481984, x=1, zero=0] [L60] COND TRUE hx < 0x00100000 VAL [\old(x)=1, hx=0, k=0, Lg1_log=666666666666673513/1000000000000000000, Lg2_log=999999999985235477/2500000000000000000, Lg3_log=2857142874366239149/10000000000000000000, Lg4_log=555554960803744599/2500000000000000000, Lg5_log=454589304040451253/2500000000000000000, Lg6_log=382845942480234333/2500000000000000000, Lg7_log=1479819860511658591/10000000000000000000, ln2_hi_log=69314718036912381649/100000000000000000000, ln2_lo_log=95410746463529385001/500000000000000000000000000000, lx=1, two54_log=18014398509481984, x=1, zero=0] [L61] COND TRUE ((hx & 0x7fffffff) | lx) == 0 [L62] return -two54_log / zero; VAL [\old(x)=1, hx=0, k=0, Lg1_log=666666666666673513/1000000000000000000, Lg2_log=999999999985235477/2500000000000000000, Lg3_log=2857142874366239149/10000000000000000000, Lg4_log=555554960803744599/2500000000000000000, Lg5_log=454589304040451253/2500000000000000000, Lg6_log=382845942480234333/2500000000000000000, Lg7_log=1479819860511658591/10000000000000000000, ln2_hi_log=69314718036912381649/100000000000000000000, ln2_lo_log=95410746463529385001/500000000000000000000000000000, lx=1, two54_log=18014398509481984, x=1, zero=0] [L148] RET, EXPR __ieee754_log(x) [L148] double res = __ieee754_log(x); [L151] EXPR res == 0.0 && __signbit_double(res) == 0 VAL [Lg1_log=666666666666673513/1000000000000000000, Lg2_log=999999999985235477/2500000000000000000, Lg3_log=2857142874366239149/10000000000000000000, Lg4_log=555554960803744599/2500000000000000000, Lg5_log=454589304040451253/2500000000000000000, Lg6_log=382845942480234333/2500000000000000000, Lg7_log=1479819860511658591/10000000000000000000, ln2_hi_log=69314718036912381649/100000000000000000000, ln2_lo_log=95410746463529385001/500000000000000000000000000000, res=18014398509481986, res == 0.0 && __signbit_double(res) == 0=0, two54_log=18014398509481984, x=1, zero=0] [L151] COND TRUE !(res == 0.0 && __signbit_double(res) == 0) [L152] reach_error() VAL [Lg1_log=666666666666673513/1000000000000000000, Lg2_log=999999999985235477/2500000000000000000, Lg3_log=2857142874366239149/10000000000000000000, Lg4_log=555554960803744599/2500000000000000000, Lg5_log=454589304040451253/2500000000000000000, Lg6_log=382845942480234333/2500000000000000000, Lg7_log=1479819860511658591/10000000000000000000, ln2_hi_log=69314718036912381649/100000000000000000000, ln2_lo_log=95410746463529385001/500000000000000000000000000000, res=18014398509481986, two54_log=18014398509481984, x=1, zero=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 23 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.6s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 23 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4 IncrementalHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 23 mSDtfsCounter, 4 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=23occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 19 NumberOfCodeBlocks, 19 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 8 ConstructedInterpolants, 0 QuantifiedInterpolants, 8 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 [2021-11-19 14:57:34,990 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a672e3b-15ac-4498-86ab-c956421e2cd5/bin/utaipan-UbGMyvGFUs/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_3a672e3b-15ac-4498-86ab-c956421e2cd5/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a672e3b-15ac-4498-86ab-c956421e2cd5/bin/utaipan-UbGMyvGFUs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a672e3b-15ac-4498-86ab-c956421e2cd5/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a672e3b-15ac-4498-86ab-c956421e2cd5/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_0930.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a672e3b-15ac-4498-86ab-c956421e2cd5/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a672e3b-15ac-4498-86ab-c956421e2cd5/bin/utaipan-UbGMyvGFUs --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 8d734d3869a39929ea479cab14eb5865c36aeb805da0fe481c4349ce6c2b3759 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 14:57:37,633 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 14:57:37,635 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 14:57:37,675 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 14:57:37,676 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 14:57:37,678 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 14:57:37,680 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 14:57:37,682 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 14:57:37,685 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 14:57:37,686 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 14:57:37,688 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 14:57:37,689 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 14:57:37,690 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 14:57:37,692 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 14:57:37,694 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 14:57:37,695 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 14:57:37,697 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 14:57:37,698 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 14:57:37,700 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 14:57:37,703 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 14:57:37,705 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 14:57:37,707 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 14:57:37,708 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 14:57:37,709 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 14:57:37,713 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 14:57:37,714 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 14:57:37,714 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 14:57:37,715 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 14:57:37,716 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 14:57:37,718 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 14:57:37,718 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 14:57:37,719 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 14:57:37,720 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 14:57:37,721 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 14:57:37,723 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 14:57:37,723 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 14:57:37,725 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 14:57:37,725 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 14:57:37,726 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 14:57:37,727 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 14:57:37,728 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 14:57:37,729 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a672e3b-15ac-4498-86ab-c956421e2cd5/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-19 14:57:37,777 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 14:57:37,778 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 14:57:37,779 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 14:57:37,779 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 14:57:37,779 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 14:57:37,780 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 14:57:37,780 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 14:57:37,780 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 14:57:37,780 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 14:57:37,781 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 14:57:37,781 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 14:57:37,782 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-19 14:57:37,782 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-19 14:57:37,782 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 14:57:37,782 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 14:57:37,783 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 14:57:37,783 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 14:57:37,783 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 14:57:37,783 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-19 14:57:37,784 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-19 14:57:37,784 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-19 14:57:37,784 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 14:57:37,784 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 14:57:37,785 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 14:57:37,785 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 14:57:37,785 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-19 14:57:37,786 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 14:57:37,786 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 14:57:37,786 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 14:57:37,786 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 14:57:37,787 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 14:57:37,787 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-19 14:57:37,787 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-19 14:57:37,790 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 14:57:37,791 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 14:57:37,791 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 14:57:37,792 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_3a672e3b-15ac-4498-86ab-c956421e2cd5/bin/utaipan-UbGMyvGFUs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a672e3b-15ac-4498-86ab-c956421e2cd5/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8d734d3869a39929ea479cab14eb5865c36aeb805da0fe481c4349ce6c2b3759 [2021-11-19 14:57:38,186 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 14:57:38,213 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 14:57:38,216 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 14:57:38,218 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 14:57:38,219 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 14:57:38,221 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a672e3b-15ac-4498-86ab-c956421e2cd5/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/float-newlib/double_req_bl_0930.c [2021-11-19 14:57:38,285 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a672e3b-15ac-4498-86ab-c956421e2cd5/bin/utaipan-UbGMyvGFUs/data/542853bfe/a5fdd805dead419e8d294ef7dd81a44f/FLAG8b780a8b4 [2021-11-19 14:57:38,847 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 14:57:38,848 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a672e3b-15ac-4498-86ab-c956421e2cd5/sv-benchmarks/c/float-newlib/double_req_bl_0930.c [2021-11-19 14:57:38,856 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a672e3b-15ac-4498-86ab-c956421e2cd5/bin/utaipan-UbGMyvGFUs/data/542853bfe/a5fdd805dead419e8d294ef7dd81a44f/FLAG8b780a8b4 [2021-11-19 14:57:39,169 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a672e3b-15ac-4498-86ab-c956421e2cd5/bin/utaipan-UbGMyvGFUs/data/542853bfe/a5fdd805dead419e8d294ef7dd81a44f [2021-11-19 14:57:39,172 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 14:57:39,176 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 14:57:39,179 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 14:57:39,179 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 14:57:39,197 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 14:57:39,197 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:57:39" (1/1) ... [2021-11-19 14:57:39,198 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4960ac70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:57:39, skipping insertion in model container [2021-11-19 14:57:39,199 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:57:39" (1/1) ... [2021-11-19 14:57:39,215 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 14:57:39,237 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 14:57:39,482 WARN L230 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_3a672e3b-15ac-4498-86ab-c956421e2cd5/sv-benchmarks/c/float-newlib/double_req_bl_0930.c[3808,3821] [2021-11-19 14:57:39,486 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:57:39,498 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 14:57:39,546 WARN L230 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_3a672e3b-15ac-4498-86ab-c956421e2cd5/sv-benchmarks/c/float-newlib/double_req_bl_0930.c[3808,3821] [2021-11-19 14:57:39,547 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:57:39,569 INFO L208 MainTranslator]: Completed translation [2021-11-19 14:57:39,570 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:57:39 WrapperNode [2021-11-19 14:57:39,570 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 14:57:39,572 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-19 14:57:39,573 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-19 14:57:39,573 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-19 14:57:39,580 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:57:39" (1/1) ... [2021-11-19 14:57:39,610 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:57:39" (1/1) ... [2021-11-19 14:57:39,656 INFO L137 Inliner]: procedures = 21, calls = 32, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 162 [2021-11-19 14:57:39,659 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-19 14:57:39,660 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 14:57:39,661 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 14:57:39,661 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 14:57:39,670 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:57:39" (1/1) ... [2021-11-19 14:57:39,671 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:57:39" (1/1) ... [2021-11-19 14:57:39,694 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:57:39" (1/1) ... [2021-11-19 14:57:39,695 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:57:39" (1/1) ... [2021-11-19 14:57:39,709 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:57:39" (1/1) ... [2021-11-19 14:57:39,727 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:57:39" (1/1) ... [2021-11-19 14:57:39,733 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:57:39" (1/1) ... [2021-11-19 14:57:39,738 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 14:57:39,739 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 14:57:39,740 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 14:57:39,740 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 14:57:39,741 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:57:39" (1/1) ... [2021-11-19 14:57:39,749 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 14:57:39,764 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a672e3b-15ac-4498-86ab-c956421e2cd5/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 14:57:39,778 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a672e3b-15ac-4498-86ab-c956421e2cd5/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 14:57:39,813 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a672e3b-15ac-4498-86ab-c956421e2cd5/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 14:57:39,834 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 14:57:39,835 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2021-11-19 14:57:39,835 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2021-11-19 14:57:39,835 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-19 14:57:39,836 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-19 14:57:39,836 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-19 14:57:39,836 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 14:57:39,836 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 14:57:39,837 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-19 14:57:39,837 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-19 14:57:39,996 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 14:57:39,998 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 14:58:04,780 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 14:58:04,788 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 14:58:04,789 INFO L301 CfgBuilder]: Removed 8 assume(true) statements. [2021-11-19 14:58:04,791 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:58:04 BoogieIcfgContainer [2021-11-19 14:58:04,791 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 14:58:04,794 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 14:58:04,795 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 14:58:04,799 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 14:58:04,799 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 02:57:39" (1/3) ... [2021-11-19 14:58:04,801 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fa5f872 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:58:04, skipping insertion in model container [2021-11-19 14:58:04,801 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:57:39" (2/3) ... [2021-11-19 14:58:04,802 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fa5f872 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:58:04, skipping insertion in model container [2021-11-19 14:58:04,802 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:58:04" (3/3) ... [2021-11-19 14:58:04,804 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_0930.c [2021-11-19 14:58:04,815 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 14:58:04,815 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-19 14:58:04,875 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 14:58:04,883 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 [2021-11-19 14:58:04,883 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-19 14:58:04,901 INFO L276 IsEmpty]: Start isEmpty. Operand has 33 states, 31 states have (on average 1.7096774193548387) internal successors, (53), 32 states have internal predecessors, (53), 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) [2021-11-19 14:58:04,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-19 14:58:04,908 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:58:04,909 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:58:04,910 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:58:04,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:58:04,921 INFO L85 PathProgramCache]: Analyzing trace with hash 1030213693, now seen corresponding path program 1 times [2021-11-19 14:58:04,935 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:58:04,936 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [88822480] [2021-11-19 14:58:04,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:58:04,938 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:58:04,939 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a672e3b-15ac-4498-86ab-c956421e2cd5/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:58:04,948 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a672e3b-15ac-4498-86ab-c956421e2cd5/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:58:04,995 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a672e3b-15ac-4498-86ab-c956421e2cd5/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-19 14:58:06,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:58:06,094 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-19 14:58:06,098 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:58:06,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:58:06,286 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:58:06,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:58:06,442 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:58:06,443 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [88822480] [2021-11-19 14:58:06,443 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [88822480] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:58:06,444 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:58:06,444 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-19 14:58:06,446 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211471453] [2021-11-19 14:58:06,447 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:58:06,452 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-19 14:58:06,452 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:58:06,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-19 14:58:06,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-19 14:58:06,484 INFO L87 Difference]: Start difference. First operand has 33 states, 31 states have (on average 1.7096774193548387) internal successors, (53), 32 states have internal predecessors, (53), 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) [2021-11-19 14:58:06,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:58:06,519 INFO L93 Difference]: Finished difference Result 64 states and 104 transitions. [2021-11-19 14:58:06,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-19 14:58:06,522 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 [2021-11-19 14:58:06,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:58:06,548 INFO L225 Difference]: With dead ends: 64 [2021-11-19 14:58:06,549 INFO L226 Difference]: Without dead ends: 30 [2021-11-19 14:58:06,552 INFO L932 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 [2021-11-19 14:58:06,557 INFO L933 BasicCegarLoop]: 44 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 14:58:06,558 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 14:58:06,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-11-19 14:58:06,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2021-11-19 14:58:06,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 29 states have (on average 1.4137931034482758) internal successors, (41), 29 states have internal predecessors, (41), 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) [2021-11-19 14:58:06,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 41 transitions. [2021-11-19 14:58:06,614 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 41 transitions. Word has length 10 [2021-11-19 14:58:06,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:58:06,614 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 41 transitions. [2021-11-19 14:58:06,615 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) [2021-11-19 14:58:06,615 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 41 transitions. [2021-11-19 14:58:06,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-19 14:58:06,617 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:58:06,618 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:58:06,642 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a672e3b-15ac-4498-86ab-c956421e2cd5/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-19 14:58:06,831 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a672e3b-15ac-4498-86ab-c956421e2cd5/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:58:06,832 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:58:06,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:58:06,833 INFO L85 PathProgramCache]: Analyzing trace with hash -1305093504, now seen corresponding path program 1 times [2021-11-19 14:58:06,834 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:58:06,835 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2058715772] [2021-11-19 14:58:06,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:58:06,835 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:58:06,835 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a672e3b-15ac-4498-86ab-c956421e2cd5/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:58:06,838 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a672e3b-15ac-4498-86ab-c956421e2cd5/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:58:06,842 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a672e3b-15ac-4498-86ab-c956421e2cd5/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-19 14:58:07,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:58:07,843 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-19 14:58:07,845 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:58:08,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:58:08,652 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:58:09,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:58:09,382 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:58:09,382 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2058715772] [2021-11-19 14:58:09,382 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2058715772] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:58:09,383 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:58:09,383 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-19 14:58:09,383 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206073490] [2021-11-19 14:58:09,383 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:58:09,385 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 14:58:09,385 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:58:09,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 14:58:09,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-19 14:58:09,386 INFO L87 Difference]: Start difference. First operand 30 states and 41 transitions. Second operand has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:58:09,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:58:09,406 INFO L93 Difference]: Finished difference Result 50 states and 69 transitions. [2021-11-19 14:58:09,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 14:58:09,406 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-11-19 14:58:09,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:58:09,409 INFO L225 Difference]: With dead ends: 50 [2021-11-19 14:58:09,410 INFO L226 Difference]: Without dead ends: 26 [2021-11-19 14:58:09,411 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-19 14:58:09,414 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 0 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 14 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 14:58:09,415 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 136 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 14 Unchecked, 0.0s Time] [2021-11-19 14:58:09,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2021-11-19 14:58:09,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2021-11-19 14:58:09,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 25 states have (on average 1.36) internal successors, (34), 25 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:58:09,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 34 transitions. [2021-11-19 14:58:09,428 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 34 transitions. Word has length 11 [2021-11-19 14:58:09,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:58:09,429 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 34 transitions. [2021-11-19 14:58:09,430 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:58:09,431 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 34 transitions. [2021-11-19 14:58:09,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-19 14:58:09,432 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:58:09,432 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:58:09,461 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a672e3b-15ac-4498-86ab-c956421e2cd5/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-11-19 14:58:09,639 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a672e3b-15ac-4498-86ab-c956421e2cd5/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:58:09,640 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:58:09,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:58:09,641 INFO L85 PathProgramCache]: Analyzing trace with hash -594905855, now seen corresponding path program 1 times [2021-11-19 14:58:09,643 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:58:09,643 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [560292026] [2021-11-19 14:58:09,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:58:09,644 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:58:09,644 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a672e3b-15ac-4498-86ab-c956421e2cd5/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:58:09,646 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a672e3b-15ac-4498-86ab-c956421e2cd5/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:58:09,658 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a672e3b-15ac-4498-86ab-c956421e2cd5/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-19 14:58:09,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:58:09,829 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-19 14:58:09,831 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:58:10,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:58:10,542 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:58:11,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:58:11,117 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:58:11,118 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [560292026] [2021-11-19 14:58:11,118 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [560292026] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:58:11,118 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:58:11,118 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-19 14:58:11,119 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818856101] [2021-11-19 14:58:11,119 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:58:11,119 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 14:58:11,120 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:58:11,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 14:58:11,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-19 14:58:11,121 INFO L87 Difference]: Start difference. First operand 26 states and 34 transitions. Second operand has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 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) [2021-11-19 14:58:14,637 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.45s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-19 14:58:14,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:58:14,641 INFO L93 Difference]: Finished difference Result 35 states and 43 transitions. [2021-11-19 14:58:15,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 14:58:15,144 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 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 [2021-11-19 14:58:15,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:58:15,145 INFO L225 Difference]: With dead ends: 35 [2021-11-19 14:58:15,145 INFO L226 Difference]: Without dead ends: 26 [2021-11-19 14:58:15,146 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-19 14:58:15,148 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 0 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 5 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2021-11-19 14:58:15,148 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 81 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 1 Unknown, 5 Unchecked, 3.5s Time] [2021-11-19 14:58:15,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2021-11-19 14:58:15,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2021-11-19 14:58:15,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 25 states have (on average 1.32) internal successors, (33), 25 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:58:15,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 33 transitions. [2021-11-19 14:58:15,154 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 33 transitions. Word has length 11 [2021-11-19 14:58:15,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:58:15,155 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 33 transitions. [2021-11-19 14:58:15,155 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 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) [2021-11-19 14:58:15,155 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 33 transitions. [2021-11-19 14:58:15,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-19 14:58:15,156 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:58:15,156 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:58:15,173 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a672e3b-15ac-4498-86ab-c956421e2cd5/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-19 14:58:15,363 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a672e3b-15ac-4498-86ab-c956421e2cd5/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:58:15,364 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:58:15,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:58:15,365 INFO L85 PathProgramCache]: Analyzing trace with hash 464469069, now seen corresponding path program 1 times [2021-11-19 14:58:15,365 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:58:15,365 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1884786958] [2021-11-19 14:58:15,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:58:15,365 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:58:15,366 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a672e3b-15ac-4498-86ab-c956421e2cd5/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:58:15,368 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a672e3b-15ac-4498-86ab-c956421e2cd5/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:58:15,369 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a672e3b-15ac-4498-86ab-c956421e2cd5/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-19 14:58:15,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:58:15,630 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-19 14:58:15,631 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:58:16,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:58:16,555 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:58:17,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:58:17,502 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:58:17,502 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1884786958] [2021-11-19 14:58:17,502 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1884786958] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:58:17,503 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:58:17,503 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-19 14:58:17,503 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550722201] [2021-11-19 14:58:17,503 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:58:17,504 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-19 14:58:17,504 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:58:17,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-19 14:58:17,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-19 14:58:17,506 INFO L87 Difference]: Start difference. First operand 26 states and 33 transitions. Second operand has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 6 states have internal predecessors, (31), 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) [2021-11-19 14:58:19,848 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.21s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-19 14:58:22,308 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-19 14:58:25,067 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.23s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-19 14:58:27,314 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.25s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-19 14:58:29,719 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.40s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-19 14:58:32,165 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.45s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-19 14:58:34,407 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.24s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-19 14:58:35,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:58:35,062 INFO L93 Difference]: Finished difference Result 47 states and 53 transitions. [2021-11-19 14:58:35,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 14:58:35,063 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 6 states have internal predecessors, (31), 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 17 [2021-11-19 14:58:35,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:58:35,064 INFO L225 Difference]: With dead ends: 47 [2021-11-19 14:58:35,065 INFO L226 Difference]: Without dead ends: 44 [2021-11-19 14:58:35,065 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-11-19 14:58:35,066 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 66 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 2 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.0s IncrementalHoareTripleChecker+Time [2021-11-19 14:58:35,067 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [66 Valid, 105 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 20 Invalid, 7 Unknown, 0 Unchecked, 17.0s Time] [2021-11-19 14:58:35,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2021-11-19 14:58:35,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 28. [2021-11-19 14:58:35,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.2962962962962963) internal successors, (35), 27 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) [2021-11-19 14:58:35,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 35 transitions. [2021-11-19 14:58:35,075 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 35 transitions. Word has length 17 [2021-11-19 14:58:35,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:58:35,076 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 35 transitions. [2021-11-19 14:58:35,076 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 6 states have internal predecessors, (31), 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) [2021-11-19 14:58:35,076 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 35 transitions. [2021-11-19 14:58:35,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-19 14:58:35,077 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:58:35,078 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:58:35,107 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a672e3b-15ac-4498-86ab-c956421e2cd5/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-19 14:58:35,293 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a672e3b-15ac-4498-86ab-c956421e2cd5/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:58:35,293 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:58:35,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:58:35,294 INFO L85 PathProgramCache]: Analyzing trace with hash 466316111, now seen corresponding path program 1 times [2021-11-19 14:58:35,295 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:58:35,295 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [155254071] [2021-11-19 14:58:35,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:58:35,295 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:58:35,296 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a672e3b-15ac-4498-86ab-c956421e2cd5/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:58:35,297 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a672e3b-15ac-4498-86ab-c956421e2cd5/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:58:35,301 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a672e3b-15ac-4498-86ab-c956421e2cd5/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-19 14:58:35,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:58:36,006 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-19 14:58:36,008 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:58:38,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:58:38,794 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:58:40,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:58:40,886 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:58:40,886 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [155254071] [2021-11-19 14:58:40,886 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [155254071] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:58:40,886 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:58:40,886 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 12 [2021-11-19 14:58:40,887 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538308073] [2021-11-19 14:58:40,887 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:58:40,887 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-19 14:58:40,887 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:58:40,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-19 14:58:40,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2021-11-19 14:58:40,888 INFO L87 Difference]: Start difference. First operand 28 states and 35 transitions. Second operand has 12 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 12 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:58:44,524 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.45s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-19 14:58:47,145 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.62s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-19 14:58:49,998 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.24s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-19 14:58:52,002 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-19 14:58:54,395 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.39s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-19 14:58:56,398 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-19 14:58:58,848 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.45s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-19 14:59:00,855 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-19 14:59:03,104 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.25s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-19 14:59:05,110 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-19 14:59:05,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:59:05,114 INFO L93 Difference]: Finished difference Result 46 states and 53 transitions. [2021-11-19 14:59:05,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 14:59:05,169 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 12 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-11-19 14:59:05,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:59:05,170 INFO L225 Difference]: With dead ends: 46 [2021-11-19 14:59:05,170 INFO L226 Difference]: Without dead ends: 37 [2021-11-19 14:59:05,171 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2021-11-19 14:59:05,172 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 15 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 17 IncrementalHoareTripleChecker+Unchecked, 24.1s IncrementalHoareTripleChecker+Time [2021-11-19 14:59:05,173 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 122 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 10 Unknown, 17 Unchecked, 24.1s Time] [2021-11-19 14:59:05,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2021-11-19 14:59:05,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 28. [2021-11-19 14:59:05,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.2222222222222223) internal successors, (33), 27 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) [2021-11-19 14:59:05,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 33 transitions. [2021-11-19 14:59:05,179 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 33 transitions. Word has length 17 [2021-11-19 14:59:05,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:59:05,179 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 33 transitions. [2021-11-19 14:59:05,180 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 12 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 14:59:05,180 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 33 transitions. [2021-11-19 14:59:05,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-19 14:59:05,181 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:59:05,181 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:59:05,212 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a672e3b-15ac-4498-86ab-c956421e2cd5/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-19 14:59:05,381 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a672e3b-15ac-4498-86ab-c956421e2cd5/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:59:05,382 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:59:05,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:59:05,383 INFO L85 PathProgramCache]: Analyzing trace with hash 671337773, now seen corresponding path program 1 times [2021-11-19 14:59:05,383 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:59:05,383 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [767229255] [2021-11-19 14:59:05,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:59:05,383 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:59:05,383 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a672e3b-15ac-4498-86ab-c956421e2cd5/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:59:05,384 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a672e3b-15ac-4498-86ab-c956421e2cd5/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:59:05,387 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a672e3b-15ac-4498-86ab-c956421e2cd5/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-19 14:59:06,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:59:06,557 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-19 14:59:06,559 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:59:07,349 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 33 [2021-11-19 14:59:10,997 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:59:10,997 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 211 treesize of output 185 [2021-11-19 14:59:11,489 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 79 treesize of output 63 [2021-11-19 14:59:12,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 14:59:12,545 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:59:32,059 WARN L228 Executor]: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a672e3b-15ac-4498-86ab-c956421e2cd5/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) stderr output: (error "out of memory") [2021-11-19 14:59:32,064 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:59:32,064 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [767229255] [2021-11-19 14:59:32,065 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a672e3b-15ac-4498-86ab-c956421e2cd5/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") [2021-11-19 14:59:32,065 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [612200140] [2021-11-19 14:59:32,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:59:32,065 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 14:59:32,065 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a672e3b-15ac-4498-86ab-c956421e2cd5/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 14:59:32,066 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a672e3b-15ac-4498-86ab-c956421e2cd5/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 101 [2021-11-19 14:59:32,066 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a672e3b-15ac-4498-86ab-c956421e2cd5/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 14:59:32,069 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a672e3b-15ac-4498-86ab-c956421e2cd5/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (8)] Waiting until timeout for monitored process [2021-11-19 14:59:34,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:59:34,754 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 21 conjunts are in the unsatisfiable core [2021-11-19 14:59:34,756 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker@28bfc445 [2021-11-19 14:59:34,756 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1278167317] [2021-11-19 14:59:34,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:59:34,757 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 14:59:34,757 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a672e3b-15ac-4498-86ab-c956421e2cd5/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 14:59:34,758 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a672e3b-15ac-4498-86ab-c956421e2cd5/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 14:59:34,759 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a672e3b-15ac-4498-86ab-c956421e2cd5/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-19 14:59:35,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:59:35,310 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-19 14:59:35,311 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker@28bfc445 [2021-11-19 14:59:35,311 INFO L186 FreeRefinementEngine]: Found 0 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:59:35,311 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2021-11-19 14:59:35,311 ERROR L172 FreeRefinementEngine]: Strategy WALRUS failed to provide any proof altough trace is infeasible [2021-11-19 14:59:35,312 INFO L628 BasicCegarLoop]: Counterexample might be feasible [2021-11-19 14:59:35,319 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-19 14:59:35,402 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a672e3b-15ac-4498-86ab-c956421e2cd5/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-19 14:59:35,536 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a672e3b-15ac-4498-86ab-c956421e2cd5/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (8)] Forceful destruction successful, exit code 0 [2021-11-19 14:59:35,743 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a672e3b-15ac-4498-86ab-c956421e2cd5/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-19 14:59:35,922 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a672e3b-15ac-4498-86ab-c956421e2cd5/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a672e3b-15ac-4498-86ab-c956421e2cd5/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a672e3b-15ac-4498-86ab-c956421e2cd5/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:59:35,926 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2021-11-19 14:59:35,928 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-19 14:59:35,946 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 02:59:35 BoogieIcfgContainer [2021-11-19 14:59:35,946 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-19 14:59:35,947 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-19 14:59:35,947 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-19 14:59:35,947 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-19 14:59:35,948 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:58:04" (3/4) ... [2021-11-19 14:59:35,951 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-19 14:59:35,951 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-19 14:59:35,952 INFO L158 Benchmark]: Toolchain (without parser) took 116776.49ms. Allocated memory was 60.8MB in the beginning and 81.8MB in the end (delta: 21.0MB). Free memory was 40.4MB in the beginning and 47.7MB in the end (delta: -7.3MB). Peak memory consumption was 15.0MB. Max. memory is 16.1GB. [2021-11-19 14:59:35,952 INFO L158 Benchmark]: CDTParser took 0.60ms. Allocated memory is still 60.8MB. Free memory is still 42.1MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 14:59:35,953 INFO L158 Benchmark]: CACSL2BoogieTranslator took 391.95ms. Allocated memory is still 60.8MB. Free memory was 40.1MB in the beginning and 39.5MB in the end (delta: 621.8kB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-19 14:59:35,953 INFO L158 Benchmark]: Boogie Procedure Inliner took 86.80ms. Allocated memory is still 60.8MB. Free memory was 39.5MB in the beginning and 37.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-19 14:59:35,953 INFO L158 Benchmark]: Boogie Preprocessor took 78.04ms. Allocated memory is still 60.8MB. Free memory was 37.4MB in the beginning and 35.5MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-19 14:59:35,954 INFO L158 Benchmark]: RCFGBuilder took 25052.42ms. Allocated memory was 60.8MB in the beginning and 81.8MB in the end (delta: 21.0MB). Free memory was 35.5MB in the beginning and 55.8MB in the end (delta: -20.3MB). Peak memory consumption was 12.8MB. Max. memory is 16.1GB. [2021-11-19 14:59:35,954 INFO L158 Benchmark]: TraceAbstraction took 91151.94ms. Allocated memory is still 81.8MB. Free memory was 55.6MB in the beginning and 48.3MB in the end (delta: 7.2MB). Peak memory consumption was 7.8MB. Max. memory is 16.1GB. [2021-11-19 14:59:35,955 INFO L158 Benchmark]: Witness Printer took 4.81ms. Allocated memory is still 81.8MB. Free memory was 48.3MB in the beginning and 47.7MB in the end (delta: 617.8kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-19 14:59:35,957 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.60ms. Allocated memory is still 60.8MB. Free memory is still 42.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 391.95ms. Allocated memory is still 60.8MB. Free memory was 40.1MB in the beginning and 39.5MB in the end (delta: 621.8kB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 86.80ms. Allocated memory is still 60.8MB. Free memory was 39.5MB in the beginning and 37.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 78.04ms. Allocated memory is still 60.8MB. Free memory was 37.4MB in the beginning and 35.5MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 25052.42ms. Allocated memory was 60.8MB in the beginning and 81.8MB in the end (delta: 21.0MB). Free memory was 35.5MB in the beginning and 55.8MB in the end (delta: -20.3MB). Peak memory consumption was 12.8MB. Max. memory is 16.1GB. * TraceAbstraction took 91151.94ms. Allocated memory is still 81.8MB. Free memory was 55.6MB in the beginning and 48.3MB in the end (delta: 7.2MB). Peak memory consumption was 7.8MB. Max. memory is 16.1GB. * Witness Printer took 4.81ms. Allocated memory is still 81.8MB. Free memory was 48.3MB in the beginning and 47.7MB in the end (delta: 617.8kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 152]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L34-L43] static const double ln2_hi_log = 6.93147180369123816490e-01, ln2_lo_log = 1.90821492927058770002e-10, two54_log = 1.80143985094819840000e+16, Lg1_log = 6.666666666666735130e-01, Lg2_log = 3.999999999940941908e-01, Lg3_log = 2.857142874366239149e-01, Lg4_log = 2.222219843214978396e-01, Lg5_log = 1.818357216161805012e-01, Lg6_log = 1.531383769920937332e-01, Lg7_log = 1.479819860511658591e-01; [L45] static const double zero = 0.0; [L146] double x = 1.0; [L148] CALL, EXPR __ieee754_log(x) [L48] double hfsq, f, s, z, R, w, t1, t2, dk; [L49] __int32_t k, hx, i, j; [L50] __uint32_t lx; [L53] ieee_double_shape_type ew_u; [L54] ew_u.value = (x) [L55] EXPR ew_u.parts.msw [L55] (hx) = ew_u.parts.msw [L56] EXPR ew_u.parts.lsw [L56] (lx) = ew_u.parts.lsw [L59] k = 0 [L60] COND FALSE !(hx < 0x00100000) [L73] COND FALSE !(hx >= 0x7ff00000) [L75] k += (hx >> 20) - 1023 [L76] hx &= 0x000fffff [L77] i = (hx + 0x95f64) & 0x100000 [L79] ieee_double_shape_type sh_u; [L80] sh_u.value = (x) [L81] sh_u.parts.msw = (hx | (i ^ 0x3ff00000)) [L82] EXPR sh_u.value [L82] (x) = sh_u.value [L84] k += (i >> 20) [L85] f = x - 1.0 [L86] COND TRUE (0x000fffff & (2 + hx)) < 3 [L87] COND FALSE !(f == zero) [L95] R = f * f * (0.5 - 0.33333333333333333 * f) [L96] COND TRUE k == 0 [L97] return f - R; [L148] RET, EXPR __ieee754_log(x) [L148] double res = __ieee754_log(x); [L151] EXPR res == 0.0 && __signbit_double(res) == 0 [L151] COND TRUE !(res == 0.0 && __signbit_double(res) == 0) [L152] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 33 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 91.1s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 46.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 18 mSolverCounterUnknown, 81 SdHoareTripleChecker+Valid, 44.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 81 mSDsluCounter, 488 SdHoareTripleChecker+Invalid, 42.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 36 IncrementalHoareTripleChecker+Unchecked, 329 mSDsCounter, 3 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 37 IncrementalHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3 mSolverCounterUnsat, 159 mSDtfsCounter, 37 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 126 GetRequests, 99 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 4.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=33occurred in iteration=0, InterpolantAutomatonStates: 24, 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, 5 MinimizatonAttempts, 25 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 4.0s SatisfiabilityAnalysisTime, 35.6s InterpolantComputationTime, 83 NumberOfCodeBlocks, 83 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 138 ConstructedInterpolants, 28 QuantifiedInterpolants, 1034 SizeOfPredicates, 35 NumberOfNonLiveVariables, 335 ConjunctsInSsa, 48 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 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 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN