./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/double_req_bl_0730c.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1b3f791-9181-4868-afb6-7ac2cf5d19a4/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1b3f791-9181-4868-afb6-7ac2cf5d19a4/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1b3f791-9181-4868-afb6-7ac2cf5d19a4/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1b3f791-9181-4868-afb6-7ac2cf5d19a4/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_0730c.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1b3f791-9181-4868-afb6-7ac2cf5d19a4/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1b3f791-9181-4868-afb6-7ac2cf5d19a4/bin/utaipan-vmNK8stdcF --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 f8c3d6863785ed03feeabfa34c0c11607b9ab236b069ea505eed9d256d26078d --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 22:51:44,670 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 22:51:44,673 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 22:51:44,725 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 22:51:44,726 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 22:51:44,727 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 22:51:44,733 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 22:51:44,740 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 22:51:44,743 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 22:51:44,745 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 22:51:44,746 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 22:51:44,749 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 22:51:44,750 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 22:51:44,758 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 22:51:44,761 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 22:51:44,763 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 22:51:44,767 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 22:51:44,770 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 22:51:44,772 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 22:51:44,779 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 22:51:44,786 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 22:51:44,787 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 22:51:44,789 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 22:51:44,790 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 22:51:44,794 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 22:51:44,794 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 22:51:44,795 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 22:51:44,796 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 22:51:44,798 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 22:51:44,799 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 22:51:44,800 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 22:51:44,801 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 22:51:44,803 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 22:51:44,805 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 22:51:44,806 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 22:51:44,807 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 22:51:44,808 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 22:51:44,808 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 22:51:44,809 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 22:51:44,809 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 22:51:44,810 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 22:51:44,812 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1b3f791-9181-4868-afb6-7ac2cf5d19a4/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-12 22:51:44,862 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 22:51:44,862 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 22:51:44,864 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 22:51:44,864 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 22:51:44,864 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 22:51:44,865 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 22:51:44,865 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 22:51:44,865 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-12 22:51:44,865 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 22:51:44,866 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 22:51:44,867 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-12 22:51:44,867 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-12 22:51:44,867 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 22:51:44,868 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-12 22:51:44,868 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-12 22:51:44,868 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-12 22:51:44,869 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 22:51:44,869 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-12 22:51:44,870 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-12 22:51:44,870 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-12 22:51:44,870 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 22:51:44,870 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-12 22:51:44,870 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 22:51:44,871 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-12 22:51:44,871 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 22:51:44,871 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-12 22:51:44,871 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-12 22:51:44,872 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 22:51:44,872 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-12 22:51:44,874 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 22:51:44,874 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 22:51:44,874 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 22:51:44,875 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 22:51:44,875 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 22:51:44,875 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-12 22:51:44,875 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-12 22:51:44,875 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-12 22:51:44,876 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-12 22:51:44,876 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 22:51:44,876 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 22:51:44,876 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_b1b3f791-9181-4868-afb6-7ac2cf5d19a4/bin/utaipan-vmNK8stdcF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1b3f791-9181-4868-afb6-7ac2cf5d19a4/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f8c3d6863785ed03feeabfa34c0c11607b9ab236b069ea505eed9d256d26078d [2021-11-12 22:51:45,155 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 22:51:45,183 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 22:51:45,185 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 22:51:45,187 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 22:51:45,188 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 22:51:45,189 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1b3f791-9181-4868-afb6-7ac2cf5d19a4/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/float-newlib/double_req_bl_0730c.c [2021-11-12 22:51:45,286 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1b3f791-9181-4868-afb6-7ac2cf5d19a4/bin/utaipan-vmNK8stdcF/data/dc7f2a938/4d28bd17c717440fbc19933d93c7e921/FLAG2c4b7695e [2021-11-12 22:51:45,840 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 22:51:45,841 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1b3f791-9181-4868-afb6-7ac2cf5d19a4/sv-benchmarks/c/float-newlib/double_req_bl_0730c.c [2021-11-12 22:51:45,848 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1b3f791-9181-4868-afb6-7ac2cf5d19a4/bin/utaipan-vmNK8stdcF/data/dc7f2a938/4d28bd17c717440fbc19933d93c7e921/FLAG2c4b7695e [2021-11-12 22:51:46,202 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1b3f791-9181-4868-afb6-7ac2cf5d19a4/bin/utaipan-vmNK8stdcF/data/dc7f2a938/4d28bd17c717440fbc19933d93c7e921 [2021-11-12 22:51:46,206 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 22:51:46,207 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 22:51:46,209 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 22:51:46,209 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 22:51:46,216 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 22:51:46,216 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 10:51:46" (1/1) ... [2021-11-12 22:51:46,219 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6cf6aa4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:51:46, skipping insertion in model container [2021-11-12 22:51:46,220 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 10:51:46" (1/1) ... [2021-11-12 22:51:46,228 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 22:51:46,256 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 22:51:46,502 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1b3f791-9181-4868-afb6-7ac2cf5d19a4/sv-benchmarks/c/float-newlib/double_req_bl_0730c.c[3223,3236] [2021-11-12 22:51:46,505 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 22:51:46,514 INFO L203 MainTranslator]: Completed pre-run [2021-11-12 22:51:46,586 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1b3f791-9181-4868-afb6-7ac2cf5d19a4/sv-benchmarks/c/float-newlib/double_req_bl_0730c.c[3223,3236] [2021-11-12 22:51:46,594 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 22:51:46,618 INFO L208 MainTranslator]: Completed translation [2021-11-12 22:51:46,620 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:51:46 WrapperNode [2021-11-12 22:51:46,620 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 22:51:46,622 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-12 22:51:46,622 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-12 22:51:46,623 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-12 22:51:46,630 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:51:46" (1/1) ... [2021-11-12 22:51:46,652 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:51:46" (1/1) ... [2021-11-12 22:51:46,700 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-12 22:51:46,703 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-12 22:51:46,704 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-12 22:51:46,704 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-12 22:51:46,713 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:51:46" (1/1) ... [2021-11-12 22:51:46,714 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:51:46" (1/1) ... [2021-11-12 22:51:46,729 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:51:46" (1/1) ... [2021-11-12 22:51:46,731 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:51:46" (1/1) ... [2021-11-12 22:51:46,741 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:51:46" (1/1) ... [2021-11-12 22:51:46,765 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:51:46" (1/1) ... [2021-11-12 22:51:46,767 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:51:46" (1/1) ... [2021-11-12 22:51:46,770 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-12 22:51:46,781 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-12 22:51:46,781 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-12 22:51:46,781 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-12 22:51:46,782 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:51:46" (1/1) ... [2021-11-12 22:51:46,794 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 22:51:46,806 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1b3f791-9181-4868-afb6-7ac2cf5d19a4/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 22:51:46,825 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1b3f791-9181-4868-afb6-7ac2cf5d19a4/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-12 22:51:46,853 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1b3f791-9181-4868-afb6-7ac2cf5d19a4/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-12 22:51:46,887 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-12 22:51:46,889 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-12 22:51:46,890 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-11-12 22:51:46,890 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-12 22:51:46,890 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-11-12 22:51:46,890 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-12 22:51:46,890 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-12 22:51:46,891 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-12 22:51:46,891 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-12 22:51:47,579 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-12 22:51:47,582 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-11-12 22:51:47,584 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 10:51:47 BoogieIcfgContainer [2021-11-12 22:51:47,585 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-12 22:51:47,588 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-12 22:51:47,588 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-12 22:51:47,592 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-12 22:51:47,592 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 10:51:46" (1/3) ... [2021-11-12 22:51:47,593 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@388a68db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 10:51:47, skipping insertion in model container [2021-11-12 22:51:47,593 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:51:46" (2/3) ... [2021-11-12 22:51:47,594 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@388a68db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 10:51:47, skipping insertion in model container [2021-11-12 22:51:47,594 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 10:51:47" (3/3) ... [2021-11-12 22:51:47,595 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_0730c.c [2021-11-12 22:51:47,601 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-12 22:51:47,602 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-12 22:51:47,663 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-12 22:51:47,670 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 [2021-11-12 22:51:47,671 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-12 22:51:47,686 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 25 states have (on average 1.72) internal successors, (43), 26 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:51:47,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-12 22:51:47,692 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:51:47,693 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:51:47,694 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:51:47,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:51:47,699 INFO L85 PathProgramCache]: Analyzing trace with hash 1451113073, now seen corresponding path program 1 times [2021-11-12 22:51:47,710 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:51:47,710 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48622255] [2021-11-12 22:51:47,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:51:47,712 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:51:47,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:51:47,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:51:47,907 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:51:47,908 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48622255] [2021-11-12 22:51:47,908 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [48622255] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:51:47,909 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:51:47,909 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-12 22:51:47,911 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213657719] [2021-11-12 22:51:47,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:51:47,916 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-12 22:51:47,916 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:51:47,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-12 22:51:47,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-12 22:51:47,962 INFO L87 Difference]: Start difference. First operand has 27 states, 25 states have (on average 1.72) internal successors, (43), 26 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:51:48,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:51:48,050 INFO L93 Difference]: Finished difference Result 53 states and 85 transitions. [2021-11-12 22:51:48,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-12 22:51:48,053 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-11-12 22:51:48,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:51:48,064 INFO L225 Difference]: With dead ends: 53 [2021-11-12 22:51:48,064 INFO L226 Difference]: Without dead ends: 25 [2021-11-12 22:51:48,068 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 [2021-11-12 22:51:48,073 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 56.08ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.64ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 67.39ms IncrementalHoareTripleChecker+Time [2021-11-12 22:51:48,074 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 25 Invalid, 11 Unknown, 0 Unchecked, 0.64ms Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 67.39ms Time] [2021-11-12 22:51:48,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2021-11-12 22:51:48,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2021-11-12 22:51:48,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 24 states have (on average 1.4166666666666667) internal successors, (34), 24 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) [2021-11-12 22:51:48,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 34 transitions. [2021-11-12 22:51:48,121 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 34 transitions. Word has length 7 [2021-11-12 22:51:48,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:51:48,122 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 34 transitions. [2021-11-12 22:51:48,123 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:51:48,123 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 34 transitions. [2021-11-12 22:51:48,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-12 22:51:48,124 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:51:48,124 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:51:48,125 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-12 22:51:48,126 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:51:48,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:51:48,130 INFO L85 PathProgramCache]: Analyzing trace with hash -237034198, now seen corresponding path program 1 times [2021-11-12 22:51:48,131 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:51:48,131 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742904753] [2021-11-12 22:51:48,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:51:48,132 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:51:48,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-12 22:51:48,208 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-12 22:51:48,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-12 22:51:48,263 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-12 22:51:48,263 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-12 22:51:48,265 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-12 22:51:48,267 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-12 22:51:48,271 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2021-11-12 22:51:48,279 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-12 22:51:48,322 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 10:51:48 BoogieIcfgContainer [2021-11-12 22:51:48,323 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-12 22:51:48,324 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-12 22:51:48,324 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-12 22:51:48,325 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-12 22:51:48,326 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 10:51:47" (3/4) ... [2021-11-12 22:51:48,329 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-12 22:51:48,329 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-12 22:51:48,331 INFO L158 Benchmark]: Toolchain (without parser) took 2123.13ms. Allocated memory was 100.7MB in the beginning and 121.6MB in the end (delta: 21.0MB). Free memory was 57.9MB in the beginning and 78.2MB in the end (delta: -20.3MB). Peak memory consumption was 532.2kB. Max. memory is 16.1GB. [2021-11-12 22:51:48,332 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 100.7MB. Free memory is still 74.8MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 22:51:48,333 INFO L158 Benchmark]: CACSL2BoogieTranslator took 411.86ms. Allocated memory is still 100.7MB. Free memory was 57.7MB in the beginning and 71.5MB in the end (delta: -13.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-12 22:51:48,337 INFO L158 Benchmark]: Boogie Procedure Inliner took 79.93ms. Allocated memory is still 100.7MB. Free memory was 71.5MB in the beginning and 69.2MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-12 22:51:48,340 INFO L158 Benchmark]: Boogie Preprocessor took 76.46ms. Allocated memory is still 100.7MB. Free memory was 69.2MB in the beginning and 67.4MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-12 22:51:48,341 INFO L158 Benchmark]: RCFGBuilder took 804.21ms. Allocated memory is still 100.7MB. Free memory was 67.4MB in the beginning and 41.7MB in the end (delta: 25.7MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2021-11-12 22:51:48,342 INFO L158 Benchmark]: TraceAbstraction took 734.78ms. Allocated memory was 100.7MB in the beginning and 121.6MB in the end (delta: 21.0MB). Free memory was 41.4MB in the beginning and 78.8MB in the end (delta: -37.4MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 22:51:48,342 INFO L158 Benchmark]: Witness Printer took 5.48ms. Allocated memory is still 121.6MB. Free memory was 78.8MB in the beginning and 78.2MB in the end (delta: 652.5kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 22:51:48,351 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 100.7MB. Free memory is still 74.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 411.86ms. Allocated memory is still 100.7MB. Free memory was 57.7MB in the beginning and 71.5MB in the end (delta: -13.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 79.93ms. Allocated memory is still 100.7MB. Free memory was 71.5MB in the beginning and 69.2MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 76.46ms. Allocated memory is still 100.7MB. Free memory was 69.2MB in the beginning and 67.4MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 804.21ms. Allocated memory is still 100.7MB. Free memory was 67.4MB in the beginning and 41.7MB in the end (delta: 25.7MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * TraceAbstraction took 734.78ms. Allocated memory was 100.7MB in the beginning and 121.6MB in the end (delta: 21.0MB). Free memory was 41.4MB in the beginning and 78.8MB in the end (delta: -37.4MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 5.48ms. Allocated memory is still 121.6MB. Free memory was 78.8MB in the beginning and 78.2MB in the end (delta: 652.5kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 156]: 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 155, overapproximation of someBinaryArithmeticDOUBLEoperation at line 35, overapproximation of bitwiseAnd at line 34. Possible FailurePath: [L19] static const double one_sqrt = 1.0, tiny_sqrt = 1.0e-300; [L151] double x = 0.0; [L152] CALL, EXPR __ieee754_sqrt(x) [L22] double z; [L23] __int32_t sign = 0x80000000; [L24] __uint32_t r, t1, s1, ix1, q1; [L25] __int32_t ix0, s0, q, m, t, i; VAL [\old(x)=0, one_sqrt=1, sign=-2147483648, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, x=0] [L28] ieee_double_shape_type ew_u; [L29] ew_u.value = (x) [L30] EXPR ew_u.parts.msw [L30] (ix0) = ew_u.parts.msw [L31] EXPR ew_u.parts.lsw [L31] (ix1) = ew_u.parts.lsw [L34] COND TRUE (ix0 & 0x7ff00000) == 0x7ff00000 [L35] return x * x + x; VAL [\old(x)=0, ix0=-1, ix1=4294967297, one_sqrt=1, sign=-2147483648, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, x=0] [L152] RET, EXPR __ieee754_sqrt(x) [L152] double res = __ieee754_sqrt(x); [L155] EXPR res == 0.0 && __signbit_double(res) == 0 VAL [one_sqrt=1, res=4294967296, res == 0.0 && __signbit_double(res) == 0=0, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, x=0] [L155] COND TRUE !(res == 0.0 && __signbit_double(res) == 0) [L156] reach_error() VAL [one_sqrt=1, res=4294967296, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, x=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 27 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.6s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 67.39ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 25 SdHoareTripleChecker+Invalid, 56.08ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 11 IncrementalHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 25 mSDtfsCounter, 11 mSolverCounterSat, 0.64ms 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=27occurred 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, 15 NumberOfCodeBlocks, 15 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 6 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-11-12 22:51:48,398 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1b3f791-9181-4868-afb6-7ac2cf5d19a4/bin/utaipan-vmNK8stdcF/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_b1b3f791-9181-4868-afb6-7ac2cf5d19a4/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1b3f791-9181-4868-afb6-7ac2cf5d19a4/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1b3f791-9181-4868-afb6-7ac2cf5d19a4/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1b3f791-9181-4868-afb6-7ac2cf5d19a4/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_0730c.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1b3f791-9181-4868-afb6-7ac2cf5d19a4/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1b3f791-9181-4868-afb6-7ac2cf5d19a4/bin/utaipan-vmNK8stdcF --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 f8c3d6863785ed03feeabfa34c0c11607b9ab236b069ea505eed9d256d26078d --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 22:51:50,961 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 22:51:50,964 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 22:51:51,018 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 22:51:51,019 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 22:51:51,023 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 22:51:51,025 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 22:51:51,033 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 22:51:51,036 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 22:51:51,044 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 22:51:51,046 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 22:51:51,048 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 22:51:51,049 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 22:51:51,051 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 22:51:51,053 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 22:51:51,058 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 22:51:51,060 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 22:51:51,061 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 22:51:51,063 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 22:51:51,075 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 22:51:51,077 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 22:51:51,078 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 22:51:51,081 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 22:51:51,084 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 22:51:51,093 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 22:51:51,094 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 22:51:51,094 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 22:51:51,096 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 22:51:51,097 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 22:51:51,098 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 22:51:51,099 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 22:51:51,100 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 22:51:51,102 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 22:51:51,103 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 22:51:51,104 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 22:51:51,105 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 22:51:51,106 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 22:51:51,106 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 22:51:51,114 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 22:51:51,115 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 22:51:51,116 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 22:51:51,122 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1b3f791-9181-4868-afb6-7ac2cf5d19a4/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-12 22:51:51,158 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 22:51:51,158 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 22:51:51,160 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 22:51:51,160 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 22:51:51,160 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 22:51:51,160 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 22:51:51,160 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 22:51:51,161 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 22:51:51,162 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 22:51:51,162 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 22:51:51,164 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 22:51:51,164 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-12 22:51:51,165 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-12 22:51:51,165 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 22:51:51,165 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-12 22:51:51,165 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 22:51:51,165 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-12 22:51:51,165 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 22:51:51,166 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-12 22:51:51,166 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-12 22:51:51,166 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-12 22:51:51,166 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-12 22:51:51,166 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 22:51:51,167 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-12 22:51:51,167 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 22:51:51,167 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-12 22:51:51,167 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 22:51:51,167 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 22:51:51,168 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 22:51:51,168 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 22:51:51,168 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-12 22:51:51,168 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-12 22:51:51,169 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-12 22:51:51,169 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-12 22:51:51,169 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 22:51:51,170 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 22:51:51,170 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_b1b3f791-9181-4868-afb6-7ac2cf5d19a4/bin/utaipan-vmNK8stdcF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1b3f791-9181-4868-afb6-7ac2cf5d19a4/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f8c3d6863785ed03feeabfa34c0c11607b9ab236b069ea505eed9d256d26078d [2021-11-12 22:51:51,548 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 22:51:51,579 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 22:51:51,582 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 22:51:51,587 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 22:51:51,587 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 22:51:51,589 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1b3f791-9181-4868-afb6-7ac2cf5d19a4/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/float-newlib/double_req_bl_0730c.c [2021-11-12 22:51:51,671 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1b3f791-9181-4868-afb6-7ac2cf5d19a4/bin/utaipan-vmNK8stdcF/data/1e8ec34d2/b8d72e1095e3449fab6d7d0441c6604b/FLAGbf096326a [2021-11-12 22:51:52,215 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 22:51:52,217 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1b3f791-9181-4868-afb6-7ac2cf5d19a4/sv-benchmarks/c/float-newlib/double_req_bl_0730c.c [2021-11-12 22:51:52,227 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1b3f791-9181-4868-afb6-7ac2cf5d19a4/bin/utaipan-vmNK8stdcF/data/1e8ec34d2/b8d72e1095e3449fab6d7d0441c6604b/FLAGbf096326a [2021-11-12 22:51:52,555 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1b3f791-9181-4868-afb6-7ac2cf5d19a4/bin/utaipan-vmNK8stdcF/data/1e8ec34d2/b8d72e1095e3449fab6d7d0441c6604b [2021-11-12 22:51:52,557 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 22:51:52,559 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 22:51:52,564 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 22:51:52,564 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 22:51:52,568 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 22:51:52,569 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 10:51:52" (1/1) ... [2021-11-12 22:51:52,571 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5396de59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:51:52, skipping insertion in model container [2021-11-12 22:51:52,572 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 10:51:52" (1/1) ... [2021-11-12 22:51:52,579 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 22:51:52,617 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 22:51:52,881 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1b3f791-9181-4868-afb6-7ac2cf5d19a4/sv-benchmarks/c/float-newlib/double_req_bl_0730c.c[3223,3236] [2021-11-12 22:51:52,895 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 22:51:52,915 INFO L203 MainTranslator]: Completed pre-run [2021-11-12 22:51:53,058 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1b3f791-9181-4868-afb6-7ac2cf5d19a4/sv-benchmarks/c/float-newlib/double_req_bl_0730c.c[3223,3236] [2021-11-12 22:51:53,059 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 22:51:53,078 INFO L208 MainTranslator]: Completed translation [2021-11-12 22:51:53,079 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:51:53 WrapperNode [2021-11-12 22:51:53,079 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 22:51:53,080 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-12 22:51:53,080 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-12 22:51:53,080 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-12 22:51:53,088 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:51:53" (1/1) ... [2021-11-12 22:51:53,101 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:51:53" (1/1) ... [2021-11-12 22:51:53,131 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-12 22:51:53,131 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-12 22:51:53,132 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-12 22:51:53,132 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-12 22:51:53,141 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:51:53" (1/1) ... [2021-11-12 22:51:53,141 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:51:53" (1/1) ... [2021-11-12 22:51:53,146 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:51:53" (1/1) ... [2021-11-12 22:51:53,147 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:51:53" (1/1) ... [2021-11-12 22:51:53,158 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:51:53" (1/1) ... [2021-11-12 22:51:53,165 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:51:53" (1/1) ... [2021-11-12 22:51:53,168 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:51:53" (1/1) ... [2021-11-12 22:51:53,172 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-12 22:51:53,173 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-12 22:51:53,173 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-12 22:51:53,174 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-12 22:51:53,174 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:51:53" (1/1) ... [2021-11-12 22:51:53,181 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 22:51:53,207 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1b3f791-9181-4868-afb6-7ac2cf5d19a4/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 22:51:53,229 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1b3f791-9181-4868-afb6-7ac2cf5d19a4/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-12 22:51:53,244 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1b3f791-9181-4868-afb6-7ac2cf5d19a4/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-12 22:51:53,275 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2021-11-12 22:51:53,275 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2021-11-12 22:51:53,275 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-12 22:51:53,276 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-12 22:51:53,276 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-12 22:51:53,278 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-12 22:51:53,278 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-12 22:51:53,279 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-12 22:51:53,279 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-12 22:51:55,682 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-12 22:51:55,682 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-11-12 22:51:55,685 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 10:51:55 BoogieIcfgContainer [2021-11-12 22:51:55,685 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-12 22:51:55,704 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-12 22:51:55,705 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-12 22:51:55,711 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-12 22:51:55,711 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 10:51:52" (1/3) ... [2021-11-12 22:51:55,712 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@153461b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 10:51:55, skipping insertion in model container [2021-11-12 22:51:55,712 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:51:53" (2/3) ... [2021-11-12 22:51:55,713 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@153461b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 10:51:55, skipping insertion in model container [2021-11-12 22:51:55,713 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 10:51:55" (3/3) ... [2021-11-12 22:51:55,714 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_0730c.c [2021-11-12 22:51:55,721 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-12 22:51:55,721 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-12 22:51:55,783 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-12 22:51:55,791 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 [2021-11-12 22:51:55,791 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-12 22:51:55,808 INFO L276 IsEmpty]: Start isEmpty. Operand has 53 states, 51 states have (on average 1.6470588235294117) internal successors, (84), 52 states have internal predecessors, (84), 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) [2021-11-12 22:51:55,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-12 22:51:55,814 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:51:55,814 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:51:55,815 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:51:55,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:51:55,821 INFO L85 PathProgramCache]: Analyzing trace with hash 361085180, now seen corresponding path program 1 times [2021-11-12 22:51:55,834 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:51:55,834 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1441928861] [2021-11-12 22:51:55,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:51:55,836 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:51:55,836 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1b3f791-9181-4868-afb6-7ac2cf5d19a4/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:51:55,839 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1b3f791-9181-4868-afb6-7ac2cf5d19a4/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:51:55,869 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1b3f791-9181-4868-afb6-7ac2cf5d19a4/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-12 22:51:56,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:51:56,190 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-12 22:51:56,193 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:51:56,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:51:56,257 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:51:56,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:51:56,305 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:51:56,305 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1441928861] [2021-11-12 22:51:56,306 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1441928861] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:51:56,306 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:51:56,307 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-12 22:51:56,309 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673738165] [2021-11-12 22:51:56,309 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:51:56,314 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-12 22:51:56,314 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:51:56,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-12 22:51:56,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-12 22:51:56,348 INFO L87 Difference]: Start difference. First operand has 53 states, 51 states have (on average 1.6470588235294117) internal successors, (84), 52 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:51:56,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:51:56,372 INFO L93 Difference]: Finished difference Result 104 states and 166 transitions. [2021-11-12 22:51:56,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-12 22:51:56,374 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-12 22:51:56,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:51:56,384 INFO L225 Difference]: With dead ends: 104 [2021-11-12 22:51:56,385 INFO L226 Difference]: Without dead ends: 50 [2021-11-12 22:51:56,388 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-12 22:51:56,392 INFO L933 BasicCegarLoop]: 73 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.31ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-12 22:51:56,394 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 1.31ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-12 22:51:56,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2021-11-12 22:51:56,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2021-11-12 22:51:56,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 49 states have (on average 1.4285714285714286) internal successors, (70), 49 states have internal predecessors, (70), 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) [2021-11-12 22:51:56,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 70 transitions. [2021-11-12 22:51:56,434 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 70 transitions. Word has length 8 [2021-11-12 22:51:56,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:51:56,435 INFO L470 AbstractCegarLoop]: Abstraction has 50 states and 70 transitions. [2021-11-12 22:51:56,435 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:51:56,435 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 70 transitions. [2021-11-12 22:51:56,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-12 22:51:56,436 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:51:56,436 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:51:56,472 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1b3f791-9181-4868-afb6-7ac2cf5d19a4/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-12 22:51:56,653 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1b3f791-9181-4868-afb6-7ac2cf5d19a4/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:51:56,654 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:51:56,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:51:56,655 INFO L85 PathProgramCache]: Analyzing trace with hash 331839487, now seen corresponding path program 1 times [2021-11-12 22:51:56,655 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:51:56,656 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [767611788] [2021-11-12 22:51:56,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:51:56,656 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:51:56,664 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1b3f791-9181-4868-afb6-7ac2cf5d19a4/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:51:56,670 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1b3f791-9181-4868-afb6-7ac2cf5d19a4/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:51:56,672 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1b3f791-9181-4868-afb6-7ac2cf5d19a4/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-12 22:51:57,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:51:57,032 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-12 22:51:57,034 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:51:57,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:51:57,400 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:51:57,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:51:57,693 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:51:57,694 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [767611788] [2021-11-12 22:51:57,694 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [767611788] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:51:57,694 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:51:57,694 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-12 22:51:57,695 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627182429] [2021-11-12 22:51:57,695 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:51:57,696 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-12 22:51:57,697 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:51:57,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-12 22:51:57,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-12 22:51:57,698 INFO L87 Difference]: Start difference. First operand 50 states and 70 transitions. Second operand has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:51:59,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:51:59,163 INFO L93 Difference]: Finished difference Result 65 states and 87 transitions. [2021-11-12 22:51:59,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-12 22:51:59,166 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-11-12 22:51:59,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:51:59,168 INFO L225 Difference]: With dead ends: 65 [2021-11-12 22:51:59,168 INFO L226 Difference]: Without dead ends: 56 [2021-11-12 22:51:59,169 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-12 22:51:59,171 INFO L933 BasicCegarLoop]: 67 mSDtfsCounter, 7 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1159.23ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 231 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.47ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 16 IncrementalHoareTripleChecker+Unchecked, 1396.01ms IncrementalHoareTripleChecker+Time [2021-11-12 22:51:59,171 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 231 Invalid, 64 Unknown, 0 Unchecked, 4.47ms Time], IncrementalHoareTripleChecker [4 Valid, 44 Invalid, 0 Unknown, 16 Unchecked, 1396.01ms Time] [2021-11-12 22:51:59,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2021-11-12 22:51:59,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 50. [2021-11-12 22:51:59,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 49 states have (on average 1.4081632653061225) internal successors, (69), 49 states have internal predecessors, (69), 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) [2021-11-12 22:51:59,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 69 transitions. [2021-11-12 22:51:59,184 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 69 transitions. Word has length 9 [2021-11-12 22:51:59,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:51:59,184 INFO L470 AbstractCegarLoop]: Abstraction has 50 states and 69 transitions. [2021-11-12 22:51:59,185 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:51:59,185 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 69 transitions. [2021-11-12 22:51:59,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-12 22:51:59,186 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:51:59,186 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:51:59,201 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1b3f791-9181-4868-afb6-7ac2cf5d19a4/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-11-12 22:51:59,392 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1b3f791-9181-4868-afb6-7ac2cf5d19a4/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:51:59,393 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:51:59,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:51:59,393 INFO L85 PathProgramCache]: Analyzing trace with hash -1929218748, now seen corresponding path program 1 times [2021-11-12 22:51:59,394 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:51:59,394 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [637281490] [2021-11-12 22:51:59,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:51:59,394 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:51:59,394 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1b3f791-9181-4868-afb6-7ac2cf5d19a4/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:51:59,396 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1b3f791-9181-4868-afb6-7ac2cf5d19a4/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:51:59,398 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1b3f791-9181-4868-afb6-7ac2cf5d19a4/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-12 22:51:59,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:51:59,461 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-12 22:51:59,463 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:51:59,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:51:59,687 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:51:59,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:51:59,891 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:51:59,892 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [637281490] [2021-11-12 22:51:59,892 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [637281490] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:51:59,892 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:51:59,895 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2021-11-12 22:51:59,896 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679047855] [2021-11-12 22:51:59,896 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:51:59,896 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-12 22:51:59,901 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:51:59,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-12 22:51:59,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-12 22:51:59,903 INFO L87 Difference]: Start difference. First operand 50 states and 69 transitions. Second operand has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 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) [2021-11-12 22:52:01,080 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-12 22:52:01,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:52:01,843 INFO L93 Difference]: Finished difference Result 62 states and 80 transitions. [2021-11-12 22:52:01,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 22:52:01,844 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 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 [2021-11-12 22:52:01,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:52:01,846 INFO L225 Difference]: With dead ends: 62 [2021-11-12 22:52:01,846 INFO L226 Difference]: Without dead ends: 59 [2021-11-12 22:52:01,847 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-11-12 22:52:01,848 INFO L933 BasicCegarLoop]: 66 mSDtfsCounter, 84 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1561.55ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 252 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.74ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1774.46ms IncrementalHoareTripleChecker+Time [2021-11-12 22:52:01,849 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [84 Valid, 252 Invalid, 25 Unknown, 0 Unchecked, 2.74ms Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 1774.46ms Time] [2021-11-12 22:52:01,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2021-11-12 22:52:01,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 52. [2021-11-12 22:52:01,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 51 states have (on average 1.392156862745098) internal successors, (71), 51 states have internal predecessors, (71), 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) [2021-11-12 22:52:01,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 71 transitions. [2021-11-12 22:52:01,860 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 71 transitions. Word has length 11 [2021-11-12 22:52:01,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:52:01,861 INFO L470 AbstractCegarLoop]: Abstraction has 52 states and 71 transitions. [2021-11-12 22:52:01,861 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 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) [2021-11-12 22:52:01,861 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 71 transitions. [2021-11-12 22:52:01,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-12 22:52:01,862 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:52:01,863 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:52:01,884 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1b3f791-9181-4868-afb6-7ac2cf5d19a4/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-11-12 22:52:02,076 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1b3f791-9181-4868-afb6-7ac2cf5d19a4/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:52:02,077 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:52:02,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:52:02,077 INFO L85 PathProgramCache]: Analyzing trace with hash 239121058, now seen corresponding path program 1 times [2021-11-12 22:52:02,078 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:52:02,078 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1027741971] [2021-11-12 22:52:02,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:52:02,078 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:52:02,079 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1b3f791-9181-4868-afb6-7ac2cf5d19a4/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:52:02,085 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1b3f791-9181-4868-afb6-7ac2cf5d19a4/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:52:02,086 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1b3f791-9181-4868-afb6-7ac2cf5d19a4/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-12 22:52:02,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:52:02,838 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-12 22:52:02,839 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:52:03,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:52:03,144 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:52:03,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:52:03,400 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:52:03,401 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1027741971] [2021-11-12 22:52:03,401 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1027741971] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:52:03,401 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:52:03,401 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-12 22:52:03,401 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097179569] [2021-11-12 22:52:03,402 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:52:03,402 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-12 22:52:03,402 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:52:03,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-12 22:52:03,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-12 22:52:03,403 INFO L87 Difference]: Start difference. First operand 52 states and 71 transitions. Second operand has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:52:03,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:52:03,904 INFO L93 Difference]: Finished difference Result 67 states and 88 transitions. [2021-11-12 22:52:03,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 22:52:03,905 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-11-12 22:52:03,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:52:03,906 INFO L225 Difference]: With dead ends: 67 [2021-11-12 22:52:03,907 INFO L226 Difference]: Without dead ends: 58 [2021-11-12 22:52:03,907 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-12 22:52:03,909 INFO L933 BasicCegarLoop]: 61 mSDtfsCounter, 6 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 406.53ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 217 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.73ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 18 IncrementalHoareTripleChecker+Unchecked, 442.53ms IncrementalHoareTripleChecker+Time [2021-11-12 22:52:03,910 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 217 Invalid, 59 Unknown, 0 Unchecked, 1.73ms Time], IncrementalHoareTripleChecker [3 Valid, 38 Invalid, 0 Unknown, 18 Unchecked, 442.53ms Time] [2021-11-12 22:52:03,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2021-11-12 22:52:03,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 52. [2021-11-12 22:52:03,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 51 states have (on average 1.3725490196078431) internal successors, (70), 51 states have internal predecessors, (70), 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) [2021-11-12 22:52:03,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 70 transitions. [2021-11-12 22:52:03,919 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 70 transitions. Word has length 12 [2021-11-12 22:52:03,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:52:03,920 INFO L470 AbstractCegarLoop]: Abstraction has 52 states and 70 transitions. [2021-11-12 22:52:03,920 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:52:03,920 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 70 transitions. [2021-11-12 22:52:03,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-12 22:52:03,921 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:52:03,922 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:52:03,947 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1b3f791-9181-4868-afb6-7ac2cf5d19a4/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-12 22:52:04,128 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1b3f791-9181-4868-afb6-7ac2cf5d19a4/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:52:04,129 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:52:04,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:52:04,129 INFO L85 PathProgramCache]: Analyzing trace with hash 264903321, now seen corresponding path program 1 times [2021-11-12 22:52:04,129 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:52:04,130 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [521949076] [2021-11-12 22:52:04,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:52:04,130 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:52:04,130 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1b3f791-9181-4868-afb6-7ac2cf5d19a4/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:52:04,131 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1b3f791-9181-4868-afb6-7ac2cf5d19a4/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:52:04,134 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1b3f791-9181-4868-afb6-7ac2cf5d19a4/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-12 22:52:04,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:52:04,213 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-12 22:52:04,217 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:52:04,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:52:04,941 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:52:05,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:52:05,923 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:52:05,923 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [521949076] [2021-11-12 22:52:05,923 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [521949076] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:52:05,924 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:52:05,924 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [] total 14 [2021-11-12 22:52:05,924 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709424796] [2021-11-12 22:52:05,924 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:52:05,925 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 22:52:05,925 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:52:05,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 22:52:05,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2021-11-12 22:52:05,926 INFO L87 Difference]: Start difference. First operand 52 states and 70 transitions. Second operand has 14 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 14 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:52:06,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:52:06,717 INFO L93 Difference]: Finished difference Result 62 states and 78 transitions. [2021-11-12 22:52:06,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-12 22:52:06,717 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 14 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-11-12 22:52:06,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:52:06,718 INFO L225 Difference]: With dead ends: 62 [2021-11-12 22:52:06,719 INFO L226 Difference]: Without dead ends: 53 [2021-11-12 22:52:06,719 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=87, Invalid=293, Unknown=0, NotChecked=0, Total=380 [2021-11-12 22:52:06,721 INFO L933 BasicCegarLoop]: 61 mSDtfsCounter, 147 mSDsluCounter, 488 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 231.77ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 549 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.18ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 19 IncrementalHoareTripleChecker+Unchecked, 240.25ms IncrementalHoareTripleChecker+Time [2021-11-12 22:52:06,721 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [147 Valid, 549 Invalid, 58 Unknown, 0 Unchecked, 3.18ms Time], IncrementalHoareTripleChecker [2 Valid, 37 Invalid, 0 Unknown, 19 Unchecked, 240.25ms Time] [2021-11-12 22:52:06,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2021-11-12 22:52:06,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 50. [2021-11-12 22:52:06,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 49 states have (on average 1.3673469387755102) internal successors, (67), 49 states have internal predecessors, (67), 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) [2021-11-12 22:52:06,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 67 transitions. [2021-11-12 22:52:06,729 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 67 transitions. Word has length 15 [2021-11-12 22:52:06,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:52:06,734 INFO L470 AbstractCegarLoop]: Abstraction has 50 states and 67 transitions. [2021-11-12 22:52:06,735 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 14 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:52:06,735 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 67 transitions. [2021-11-12 22:52:06,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-12 22:52:06,736 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:52:06,736 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:52:06,755 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1b3f791-9181-4868-afb6-7ac2cf5d19a4/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-12 22:52:06,951 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1b3f791-9181-4868-afb6-7ac2cf5d19a4/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:52:06,952 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:52:06,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:52:06,952 INFO L85 PathProgramCache]: Analyzing trace with hash -677910631, now seen corresponding path program 1 times [2021-11-12 22:52:06,953 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:52:06,953 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [114794734] [2021-11-12 22:52:06,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:52:06,953 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:52:06,954 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1b3f791-9181-4868-afb6-7ac2cf5d19a4/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:52:06,954 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1b3f791-9181-4868-afb6-7ac2cf5d19a4/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:52:06,956 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1b3f791-9181-4868-afb6-7ac2cf5d19a4/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-12 22:52:07,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:52:07,035 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-12 22:52:07,037 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:52:07,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:52:07,380 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:52:07,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:52:07,701 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:52:07,701 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [114794734] [2021-11-12 22:52:07,701 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [114794734] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:52:07,701 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:52:07,701 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-12 22:52:07,701 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633987041] [2021-11-12 22:52:07,702 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:52:07,702 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-12 22:52:07,702 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:52:07,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-12 22:52:07,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-12 22:52:07,704 INFO L87 Difference]: Start difference. First operand 50 states and 67 transitions. Second operand has 6 states, 6 states have (on average 5.0) internal successors, (30), 6 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:52:08,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:52:08,147 INFO L93 Difference]: Finished difference Result 93 states and 126 transitions. [2021-11-12 22:52:08,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 22:52:08,148 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.0) internal successors, (30), 6 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-11-12 22:52:08,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:52:08,149 INFO L225 Difference]: With dead ends: 93 [2021-11-12 22:52:08,149 INFO L226 Difference]: Without dead ends: 51 [2021-11-12 22:52:08,150 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-12 22:52:08,151 INFO L933 BasicCegarLoop]: 63 mSDtfsCounter, 4 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 360.53ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.98ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 3 IncrementalHoareTripleChecker+Unchecked, 387.46ms IncrementalHoareTripleChecker+Time [2021-11-12 22:52:08,152 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 161 Invalid, 29 Unknown, 0 Unchecked, 0.98ms Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 3 Unchecked, 387.46ms Time] [2021-11-12 22:52:08,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2021-11-12 22:52:08,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 50. [2021-11-12 22:52:08,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 49 states have (on average 1.346938775510204) internal successors, (66), 49 states have internal predecessors, (66), 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) [2021-11-12 22:52:08,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 66 transitions. [2021-11-12 22:52:08,160 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 66 transitions. Word has length 25 [2021-11-12 22:52:08,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:52:08,161 INFO L470 AbstractCegarLoop]: Abstraction has 50 states and 66 transitions. [2021-11-12 22:52:08,161 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.0) internal successors, (30), 6 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:52:08,161 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 66 transitions. [2021-11-12 22:52:08,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-12 22:52:08,163 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:52:08,163 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:52:08,180 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1b3f791-9181-4868-afb6-7ac2cf5d19a4/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-12 22:52:08,376 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1b3f791-9181-4868-afb6-7ac2cf5d19a4/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:52:08,377 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:52:08,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:52:08,377 INFO L85 PathProgramCache]: Analyzing trace with hash 1807617568, now seen corresponding path program 1 times [2021-11-12 22:52:08,377 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:52:08,377 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1655599144] [2021-11-12 22:52:08,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:52:08,378 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:52:08,378 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1b3f791-9181-4868-afb6-7ac2cf5d19a4/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:52:08,378 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1b3f791-9181-4868-afb6-7ac2cf5d19a4/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:52:08,381 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1b3f791-9181-4868-afb6-7ac2cf5d19a4/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-12 22:52:08,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:52:08,448 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-12 22:52:08,449 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:52:08,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:52:08,945 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:52:09,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:52:09,369 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:52:09,369 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1655599144] [2021-11-12 22:52:09,370 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1655599144] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:52:09,370 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:52:09,370 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-12 22:52:09,370 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12156155] [2021-11-12 22:52:09,370 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:52:09,371 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-12 22:52:09,371 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:52:09,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-12 22:52:09,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-11-12 22:52:09,372 INFO L87 Difference]: Start difference. First operand 50 states and 66 transitions. Second operand has 8 states, 8 states have (on average 4.5) internal successors, (36), 8 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) [2021-11-12 22:52:10,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:52:10,086 INFO L93 Difference]: Finished difference Result 91 states and 122 transitions. [2021-11-12 22:52:10,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-12 22:52:10,087 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 8 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-11-12 22:52:10,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:52:10,088 INFO L225 Difference]: With dead ends: 91 [2021-11-12 22:52:10,089 INFO L226 Difference]: Without dead ends: 56 [2021-11-12 22:52:10,089 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 46 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-12 22:52:10,090 INFO L933 BasicCegarLoop]: 56 mSDtfsCounter, 10 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 607.46ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 197 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.96ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 9 IncrementalHoareTripleChecker+Unchecked, 627.82ms IncrementalHoareTripleChecker+Time [2021-11-12 22:52:10,091 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 197 Invalid, 45 Unknown, 0 Unchecked, 0.96ms Time], IncrementalHoareTripleChecker [1 Valid, 35 Invalid, 0 Unknown, 9 Unchecked, 627.82ms Time] [2021-11-12 22:52:10,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2021-11-12 22:52:10,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 50. [2021-11-12 22:52:10,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 49 states have (on average 1.3265306122448979) internal successors, (65), 49 states have internal predecessors, (65), 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) [2021-11-12 22:52:10,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 65 transitions. [2021-11-12 22:52:10,098 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 65 transitions. Word has length 27 [2021-11-12 22:52:10,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:52:10,098 INFO L470 AbstractCegarLoop]: Abstraction has 50 states and 65 transitions. [2021-11-12 22:52:10,099 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 8 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) [2021-11-12 22:52:10,099 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 65 transitions. [2021-11-12 22:52:10,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-12 22:52:10,101 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:52:10,101 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:52:10,132 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1b3f791-9181-4868-afb6-7ac2cf5d19a4/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Ended with exit code 0 [2021-11-12 22:52:10,317 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1b3f791-9181-4868-afb6-7ac2cf5d19a4/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:52:10,320 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:52:10,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:52:10,321 INFO L85 PathProgramCache]: Analyzing trace with hash 1380172751, now seen corresponding path program 1 times [2021-11-12 22:52:10,321 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:52:10,321 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2095038713] [2021-11-12 22:52:10,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:52:10,322 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:52:10,322 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1b3f791-9181-4868-afb6-7ac2cf5d19a4/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:52:10,323 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1b3f791-9181-4868-afb6-7ac2cf5d19a4/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:52:10,324 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1b3f791-9181-4868-afb6-7ac2cf5d19a4/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-12 22:52:10,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:52:10,404 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-12 22:52:10,406 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:52:10,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:52:10,892 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:52:11,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:52:11,267 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:52:11,267 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2095038713] [2021-11-12 22:52:11,267 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2095038713] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:52:11,267 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:52:11,267 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-12 22:52:11,267 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526574462] [2021-11-12 22:52:11,268 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:52:11,268 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-12 22:52:11,268 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:52:11,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-12 22:52:11,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-11-12 22:52:11,269 INFO L87 Difference]: Start difference. First operand 50 states and 65 transitions. Second operand has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 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) [2021-11-12 22:52:11,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:52:11,410 INFO L93 Difference]: Finished difference Result 90 states and 120 transitions. [2021-11-12 22:52:11,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-12 22:52:11,412 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 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) Word has length 31 [2021-11-12 22:52:11,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:52:11,413 INFO L225 Difference]: With dead ends: 90 [2021-11-12 22:52:11,413 INFO L226 Difference]: Without dead ends: 51 [2021-11-12 22:52:11,414 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 56 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-12 22:52:11,415 INFO L933 BasicCegarLoop]: 58 mSDtfsCounter, 2 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 49.82ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 206 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.71ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 29 IncrementalHoareTripleChecker+Unchecked, 52.02ms IncrementalHoareTripleChecker+Time [2021-11-12 22:52:11,415 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 206 Invalid, 40 Unknown, 0 Unchecked, 0.71ms Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 29 Unchecked, 52.02ms Time] [2021-11-12 22:52:11,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2021-11-12 22:52:11,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2021-11-12 22:52:11,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 50 states have (on average 1.32) internal successors, (66), 50 states have internal predecessors, (66), 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) [2021-11-12 22:52:11,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 66 transitions. [2021-11-12 22:52:11,421 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 66 transitions. Word has length 31 [2021-11-12 22:52:11,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:52:11,422 INFO L470 AbstractCegarLoop]: Abstraction has 51 states and 66 transitions. [2021-11-12 22:52:11,422 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 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) [2021-11-12 22:52:11,422 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 66 transitions. [2021-11-12 22:52:11,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-11-12 22:52:11,424 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:52:11,424 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:52:11,444 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1b3f791-9181-4868-afb6-7ac2cf5d19a4/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (9)] Ended with exit code 0 [2021-11-12 22:52:11,628 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1b3f791-9181-4868-afb6-7ac2cf5d19a4/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:52:11,628 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:52:11,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:52:11,629 INFO L85 PathProgramCache]: Analyzing trace with hash 1685732611, now seen corresponding path program 1 times [2021-11-12 22:52:11,629 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:52:11,629 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1105490893] [2021-11-12 22:52:11,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:52:11,629 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:52:11,629 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1b3f791-9181-4868-afb6-7ac2cf5d19a4/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:52:11,630 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1b3f791-9181-4868-afb6-7ac2cf5d19a4/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:52:11,631 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1b3f791-9181-4868-afb6-7ac2cf5d19a4/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-12 22:52:11,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:52:11,722 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-12 22:52:11,724 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:52:11,879 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-12 22:52:11,879 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:52:12,039 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-12 22:52:12,039 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:52:12,040 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1105490893] [2021-11-12 22:52:12,040 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1105490893] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:52:12,040 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:52:12,040 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-12 22:52:12,040 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545976962] [2021-11-12 22:52:12,040 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:52:12,041 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 22:52:12,041 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:52:12,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 22:52:12,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 22:52:12,042 INFO L87 Difference]: Start difference. First operand 51 states and 66 transitions. Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 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) [2021-11-12 22:52:12,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:52:12,207 INFO L93 Difference]: Finished difference Result 84 states and 112 transitions. [2021-11-12 22:52:12,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 22:52:12,208 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2021-11-12 22:52:12,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:52:12,209 INFO L225 Difference]: With dead ends: 84 [2021-11-12 22:52:12,210 INFO L226 Difference]: Without dead ends: 55 [2021-11-12 22:52:12,210 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-12 22:52:12,211 INFO L933 BasicCegarLoop]: 59 mSDtfsCounter, 14 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 150.94ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.87ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 160.04ms IncrementalHoareTripleChecker+Time [2021-11-12 22:52:12,211 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 158 Invalid, 26 Unknown, 0 Unchecked, 0.87ms Time], IncrementalHoareTripleChecker [3 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 160.04ms Time] [2021-11-12 22:52:12,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2021-11-12 22:52:12,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2021-11-12 22:52:12,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 54 states have (on average 1.3148148148148149) internal successors, (71), 54 states have internal predecessors, (71), 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) [2021-11-12 22:52:12,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 71 transitions. [2021-11-12 22:52:12,218 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 71 transitions. Word has length 32 [2021-11-12 22:52:12,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:52:12,219 INFO L470 AbstractCegarLoop]: Abstraction has 55 states and 71 transitions. [2021-11-12 22:52:12,219 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 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) [2021-11-12 22:52:12,219 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 71 transitions. [2021-11-12 22:52:12,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-12 22:52:12,221 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:52:12,221 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:52:12,241 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1b3f791-9181-4868-afb6-7ac2cf5d19a4/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-12 22:52:12,432 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1b3f791-9181-4868-afb6-7ac2cf5d19a4/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:52:12,432 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:52:12,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:52:12,433 INFO L85 PathProgramCache]: Analyzing trace with hash 429259843, now seen corresponding path program 1 times [2021-11-12 22:52:12,433 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:52:12,433 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1232607576] [2021-11-12 22:52:12,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:52:12,434 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:52:12,434 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1b3f791-9181-4868-afb6-7ac2cf5d19a4/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:52:12,435 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1b3f791-9181-4868-afb6-7ac2cf5d19a4/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:52:12,472 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1b3f791-9181-4868-afb6-7ac2cf5d19a4/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-12 22:52:12,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:52:12,537 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 22:52:12,539 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:52:12,785 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-12 22:52:12,785 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:52:13,146 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-12 22:52:13,147 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:52:13,147 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1232607576] [2021-11-12 22:52:13,147 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1232607576] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 22:52:13,147 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [416572209] [2021-11-12 22:52:13,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:52:13,148 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-12 22:52:13,148 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1b3f791-9181-4868-afb6-7ac2cf5d19a4/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-12 22:52:13,154 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1b3f791-9181-4868-afb6-7ac2cf5d19a4/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-12 22:52:13,172 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1b3f791-9181-4868-afb6-7ac2cf5d19a4/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (12)] Waiting until timeout for monitored process [2021-11-12 22:52:13,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:52:13,379 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 22:52:13,381 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:52:13,860 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-12 22:52:13,860 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:52:14,251 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-12 22:52:14,251 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [416572209] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:52:14,251 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-12 22:52:14,252 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [5, 5] total 11 [2021-11-12 22:52:14,253 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514054553] [2021-11-12 22:52:14,253 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:52:14,254 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-12 22:52:14,254 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:52:14,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-12 22:52:14,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2021-11-12 22:52:14,255 INFO L87 Difference]: Start difference. First operand 55 states and 71 transitions. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 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) [2021-11-12 22:52:14,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:52:14,603 INFO L93 Difference]: Finished difference Result 84 states and 111 transitions. [2021-11-12 22:52:14,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-12 22:52:14,604 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 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 38 [2021-11-12 22:52:14,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:52:14,605 INFO L225 Difference]: With dead ends: 84 [2021-11-12 22:52:14,605 INFO L226 Difference]: Without dead ends: 63 [2021-11-12 22:52:14,605 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2021-11-12 22:52:14,606 INFO L933 BasicCegarLoop]: 51 mSDtfsCounter, 134 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 215.65ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.46ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 238.05ms IncrementalHoareTripleChecker+Time [2021-11-12 22:52:14,607 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [134 Valid, 100 Invalid, 39 Unknown, 0 Unchecked, 1.46ms Time], IncrementalHoareTripleChecker [8 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 238.05ms Time] [2021-11-12 22:52:14,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2021-11-12 22:52:14,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2021-11-12 22:52:14,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 62 states have (on average 1.3225806451612903) internal successors, (82), 62 states have internal predecessors, (82), 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) [2021-11-12 22:52:14,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 82 transitions. [2021-11-12 22:52:14,615 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 82 transitions. Word has length 38 [2021-11-12 22:52:14,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:52:14,616 INFO L470 AbstractCegarLoop]: Abstraction has 63 states and 82 transitions. [2021-11-12 22:52:14,616 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 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) [2021-11-12 22:52:14,616 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 82 transitions. [2021-11-12 22:52:14,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-12 22:52:14,618 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:52:14,618 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:52:14,625 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1b3f791-9181-4868-afb6-7ac2cf5d19a4/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (12)] Forceful destruction successful, exit code 0 [2021-11-12 22:52:14,834 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1b3f791-9181-4868-afb6-7ac2cf5d19a4/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-12 22:52:15,025 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1b3f791-9181-4868-afb6-7ac2cf5d19a4/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1b3f791-9181-4868-afb6-7ac2cf5d19a4/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:52:15,026 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:52:15,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:52:15,026 INFO L85 PathProgramCache]: Analyzing trace with hash 1564040323, now seen corresponding path program 1 times [2021-11-12 22:52:15,026 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:52:15,026 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [990470440] [2021-11-12 22:52:15,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:52:15,027 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:52:15,027 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1b3f791-9181-4868-afb6-7ac2cf5d19a4/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:52:15,027 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1b3f791-9181-4868-afb6-7ac2cf5d19a4/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:52:15,028 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1b3f791-9181-4868-afb6-7ac2cf5d19a4/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-12 22:52:15,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:52:15,135 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 22:52:15,137 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:52:15,456 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-12 22:52:15,456 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:52:15,765 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-12 22:52:15,765 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:52:15,765 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [990470440] [2021-11-12 22:52:15,765 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [990470440] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 22:52:15,765 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [181377851] [2021-11-12 22:52:15,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:52:15,766 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-12 22:52:15,766 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1b3f791-9181-4868-afb6-7ac2cf5d19a4/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-12 22:52:15,777 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1b3f791-9181-4868-afb6-7ac2cf5d19a4/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-12 22:52:15,778 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1b3f791-9181-4868-afb6-7ac2cf5d19a4/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (14)] Waiting until timeout for monitored process [2021-11-12 22:52:16,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:52:16,015 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 22:52:16,017 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:52:16,242 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-12 22:52:16,242 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:52:16,480 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-12 22:52:16,480 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [181377851] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 22:52:16,481 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2029564572] [2021-11-12 22:52:16,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:52:16,481 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 22:52:16,481 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1b3f791-9181-4868-afb6-7ac2cf5d19a4/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 22:52:16,483 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1b3f791-9181-4868-afb6-7ac2cf5d19a4/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 22:52:16,504 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1b3f791-9181-4868-afb6-7ac2cf5d19a4/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-11-12 22:52:16,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:52:16,558 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 22:52:16,559 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:52:16,783 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-12 22:52:16,783 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:52:17,016 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-12 22:52:17,016 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2029564572] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 22:52:17,016 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-12 22:52:17,016 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5, 5] total 8 [2021-11-12 22:52:17,017 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317250020] [2021-11-12 22:52:17,017 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-12 22:52:17,018 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-12 22:52:17,018 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:52:17,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-12 22:52:17,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2021-11-12 22:52:17,019 INFO L87 Difference]: Start difference. First operand 63 states and 82 transitions. Second operand has 8 states, 8 states have (on average 6.125) internal successors, (49), 8 states have internal predecessors, (49), 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) [2021-11-12 22:52:17,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:52:17,330 INFO L93 Difference]: Finished difference Result 112 states and 152 transitions. [2021-11-12 22:52:17,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-12 22:52:17,330 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.125) internal successors, (49), 8 states have internal predecessors, (49), 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 44 [2021-11-12 22:52:17,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:52:17,331 INFO L225 Difference]: With dead ends: 112 [2021-11-12 22:52:17,331 INFO L226 Difference]: Without dead ends: 75 [2021-11-12 22:52:17,332 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 252 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2021-11-12 22:52:17,333 INFO L933 BasicCegarLoop]: 61 mSDtfsCounter, 35 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 279.56ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.16ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 301.82ms IncrementalHoareTripleChecker+Time [2021-11-12 22:52:17,333 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [35 Valid, 133 Invalid, 61 Unknown, 0 Unchecked, 1.16ms Time], IncrementalHoareTripleChecker [7 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 301.82ms Time] [2021-11-12 22:52:17,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2021-11-12 22:52:17,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2021-11-12 22:52:17,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 74 states have (on average 1.3243243243243243) internal successors, (98), 74 states have internal predecessors, (98), 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) [2021-11-12 22:52:17,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 98 transitions. [2021-11-12 22:52:17,341 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 98 transitions. Word has length 44 [2021-11-12 22:52:17,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:52:17,342 INFO L470 AbstractCegarLoop]: Abstraction has 75 states and 98 transitions. [2021-11-12 22:52:17,342 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.125) internal successors, (49), 8 states have internal predecessors, (49), 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) [2021-11-12 22:52:17,342 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 98 transitions. [2021-11-12 22:52:17,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-12 22:52:17,345 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:52:17,345 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:52:17,372 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1b3f791-9181-4868-afb6-7ac2cf5d19a4/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-11-12 22:52:17,564 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1b3f791-9181-4868-afb6-7ac2cf5d19a4/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (13)] Ended with exit code 0 [2021-11-12 22:52:17,754 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1b3f791-9181-4868-afb6-7ac2cf5d19a4/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (14)] Forceful destruction successful, exit code 0 [2021-11-12 22:52:17,953 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1b3f791-9181-4868-afb6-7ac2cf5d19a4/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1b3f791-9181-4868-afb6-7ac2cf5d19a4/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1b3f791-9181-4868-afb6-7ac2cf5d19a4/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt [2021-11-12 22:52:17,953 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:52:17,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:52:17,954 INFO L85 PathProgramCache]: Analyzing trace with hash -229463293, now seen corresponding path program 2 times [2021-11-12 22:52:17,954 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:52:17,954 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1769121714] [2021-11-12 22:52:17,954 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-12 22:52:17,954 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:52:17,954 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1b3f791-9181-4868-afb6-7ac2cf5d19a4/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:52:17,955 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1b3f791-9181-4868-afb6-7ac2cf5d19a4/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:52:17,956 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1b3f791-9181-4868-afb6-7ac2cf5d19a4/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-12 22:52:18,058 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-12 22:52:18,059 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-12 22:52:18,063 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-12 22:52:18,065 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:52:18,198 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 27 [2021-11-12 22:52:18,705 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2021-11-12 22:52:18,705 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:52:19,090 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 30 [2021-11-12 22:52:19,189 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2021-11-12 22:52:19,189 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:52:19,189 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1769121714] [2021-11-12 22:52:19,190 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1769121714] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:52:19,190 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:52:19,190 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-12 22:52:19,190 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100214820] [2021-11-12 22:52:19,190 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:52:19,190 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-12 22:52:19,190 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:52:19,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-12 22:52:19,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-12 22:52:19,191 INFO L87 Difference]: Start difference. First operand 75 states and 98 transitions. Second operand has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 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) [2021-11-12 22:52:19,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:52:19,253 INFO L93 Difference]: Finished difference Result 75 states and 98 transitions. [2021-11-12 22:52:19,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-12 22:52:19,253 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 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 56 [2021-11-12 22:52:19,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:52:19,253 INFO L225 Difference]: With dead ends: 75 [2021-11-12 22:52:19,254 INFO L226 Difference]: Without dead ends: 0 [2021-11-12 22:52:19,254 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-12 22:52:19,255 INFO L933 BasicCegarLoop]: 3 mSDtfsCounter, 4 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.63ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.10ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 3 IncrementalHoareTripleChecker+Unchecked, 13.21ms IncrementalHoareTripleChecker+Time [2021-11-12 22:52:19,255 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 6 Invalid, 5 Unknown, 0 Unchecked, 0.10ms Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 3 Unchecked, 13.21ms Time] [2021-11-12 22:52:19,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-12 22:52:19,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-12 22:52:19,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:52:19,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-12 22:52:19,256 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 56 [2021-11-12 22:52:19,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:52:19,256 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-12 22:52:19,256 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 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) [2021-11-12 22:52:19,256 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-12 22:52:19,256 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-12 22:52:19,259 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-12 22:52:19,282 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1b3f791-9181-4868-afb6-7ac2cf5d19a4/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (16)] Ended with exit code 0 [2021-11-12 22:52:19,476 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1b3f791-9181-4868-afb6-7ac2cf5d19a4/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:52:19,477 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-11-12 22:52:19,837 INFO L858 garLoopResultBuilder]: For program point L60(lines 60 63) no Hoare annotation was computed. [2021-11-12 22:52:19,838 INFO L858 garLoopResultBuilder]: For program point L27-1(lines 27 32) no Hoare annotation was computed. [2021-11-12 22:52:19,838 INFO L858 garLoopResultBuilder]: For program point L60-2(lines 60 63) no Hoare annotation was computed. [2021-11-12 22:52:19,838 INFO L854 garLoopResultBuilder]: At program point L27-2(lines 27 32) the Hoare annotation is: (and (= |ULTIMATE.start___ieee754_sqrt_~sign~0#1| (_ bv2147483648 32)) (= (_ +zero 11 53) |ULTIMATE.start___ieee754_sqrt_~x#1|)) [2021-11-12 22:52:19,838 INFO L858 garLoopResultBuilder]: For program point L27-3(lines 21 129) no Hoare annotation was computed. [2021-11-12 22:52:19,838 INFO L858 garLoopResultBuilder]: For program point L52-2(lines 52 53) no Hoare annotation was computed. [2021-11-12 22:52:19,838 INFO L854 garLoopResultBuilder]: At program point L52-3(lines 52 53) the Hoare annotation is: false [2021-11-12 22:52:19,838 INFO L858 garLoopResultBuilder]: For program point L52-4(lines 52 53) no Hoare annotation was computed. [2021-11-12 22:52:19,839 INFO L858 garLoopResultBuilder]: For program point L110(lines 110 111) no Hoare annotation was computed. [2021-11-12 22:52:19,839 INFO L858 garLoopResultBuilder]: For program point L110-2(lines 110 111) no Hoare annotation was computed. [2021-11-12 22:52:19,839 INFO L858 garLoopResultBuilder]: For program point L102(lines 102 116) no Hoare annotation was computed. [2021-11-12 22:52:19,839 INFO L861 garLoopResultBuilder]: At program point L160(lines 143 161) the Hoare annotation is: true [2021-11-12 22:52:19,839 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-11-12 22:52:19,839 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-11-12 22:52:19,839 INFO L858 garLoopResultBuilder]: For program point L119(lines 119 120) no Hoare annotation was computed. [2021-11-12 22:52:19,839 INFO L858 garLoopResultBuilder]: For program point L119-2(lines 119 120) no Hoare annotation was computed. [2021-11-12 22:52:19,839 INFO L854 garLoopResultBuilder]: At program point L128(lines 21 129) the Hoare annotation is: (and (= (_ +zero 11 53) |ULTIMATE.start___ieee754_sqrt_~x#1|) (= (_ +zero 11 53) |ULTIMATE.start___ieee754_sqrt_#res#1|)) [2021-11-12 22:52:19,839 INFO L858 garLoopResultBuilder]: For program point L87(lines 87 96) no Hoare annotation was computed. [2021-11-12 22:52:19,839 INFO L858 garLoopResultBuilder]: For program point L87-2(lines 87 96) no Hoare annotation was computed. [2021-11-12 22:52:19,840 INFO L858 garLoopResultBuilder]: For program point L46(lines 46 57) no Hoare annotation was computed. [2021-11-12 22:52:19,840 INFO L858 garLoopResultBuilder]: For program point L46-2(lines 46 57) no Hoare annotation was computed. [2021-11-12 22:52:19,840 INFO L858 garLoopResultBuilder]: For program point L104(lines 104 115) no Hoare annotation was computed. [2021-11-12 22:52:19,840 INFO L858 garLoopResultBuilder]: For program point L38(lines 38 43) no Hoare annotation was computed. [2021-11-12 22:52:19,840 INFO L854 garLoopResultBuilder]: At program point L71-2(lines 71 81) the Hoare annotation is: false [2021-11-12 22:52:19,840 INFO L858 garLoopResultBuilder]: For program point L38-2(lines 38 43) no Hoare annotation was computed. [2021-11-12 22:52:19,841 INFO L858 garLoopResultBuilder]: For program point L71-3(lines 71 81) no Hoare annotation was computed. [2021-11-12 22:52:19,841 INFO L854 garLoopResultBuilder]: At program point L47-2(lines 47 51) the Hoare annotation is: false [2021-11-12 22:52:19,841 INFO L858 garLoopResultBuilder]: For program point L47-3(lines 47 51) no Hoare annotation was computed. [2021-11-12 22:52:19,841 INFO L858 garLoopResultBuilder]: For program point L39(lines 39 42) no Hoare annotation was computed. [2021-11-12 22:52:19,841 INFO L858 garLoopResultBuilder]: For program point L155(line 155) no Hoare annotation was computed. [2021-11-12 22:52:19,841 INFO L858 garLoopResultBuilder]: For program point L89(lines 89 90) no Hoare annotation was computed. [2021-11-12 22:52:19,842 INFO L858 garLoopResultBuilder]: For program point L122-1(lines 122 127) no Hoare annotation was computed. [2021-11-12 22:52:19,842 INFO L858 garLoopResultBuilder]: For program point L155-2(lines 155 158) no Hoare annotation was computed. [2021-11-12 22:52:19,842 INFO L854 garLoopResultBuilder]: At program point L122-2(lines 122 127) the Hoare annotation is: false [2021-11-12 22:52:19,842 INFO L858 garLoopResultBuilder]: For program point L89-2(lines 89 90) no Hoare annotation was computed. [2021-11-12 22:52:19,842 INFO L858 garLoopResultBuilder]: For program point L122-3(lines 122 127) no Hoare annotation was computed. [2021-11-12 22:52:19,842 INFO L858 garLoopResultBuilder]: For program point L106(lines 106 114) no Hoare annotation was computed. [2021-11-12 22:52:19,842 INFO L858 garLoopResultBuilder]: For program point L73(lines 73 77) no Hoare annotation was computed. [2021-11-12 22:52:19,842 INFO L858 garLoopResultBuilder]: For program point L73-2(lines 73 77) no Hoare annotation was computed. [2021-11-12 22:52:19,842 INFO L858 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-11-12 22:52:19,843 INFO L858 garLoopResultBuilder]: For program point L156(line 156) no Hoare annotation was computed. [2021-11-12 22:52:19,843 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 156) no Hoare annotation was computed. [2021-11-12 22:52:19,843 INFO L854 garLoopResultBuilder]: At program point L140(lines 131 141) the Hoare annotation is: (and (= (_ +zero 11 53) |ULTIMATE.start___ieee754_sqrt_~x#1|) |ULTIMATE.start_main_#t~short14#1| (= (_ bv0 32) |ULTIMATE.start___signbit_double_#res#1|)) [2021-11-12 22:52:19,843 INFO L858 garLoopResultBuilder]: For program point L41(lines 41 42) no Hoare annotation was computed. [2021-11-12 22:52:19,843 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-11-12 22:52:19,844 INFO L858 garLoopResultBuilder]: For program point L92(lines 92 93) no Hoare annotation was computed. [2021-11-12 22:52:19,844 INFO L858 garLoopResultBuilder]: For program point L92-2(lines 92 93) no Hoare annotation was computed. [2021-11-12 22:52:19,844 INFO L854 garLoopResultBuilder]: At program point L84-2(lines 84 100) the Hoare annotation is: false [2021-11-12 22:52:19,844 INFO L858 garLoopResultBuilder]: For program point L84-3(lines 21 129) no Hoare annotation was computed. [2021-11-12 22:52:19,844 INFO L858 garLoopResultBuilder]: For program point L109(lines 109 114) no Hoare annotation was computed. [2021-11-12 22:52:19,844 INFO L858 garLoopResultBuilder]: For program point L134-1(lines 134 138) no Hoare annotation was computed. [2021-11-12 22:52:19,845 INFO L854 garLoopResultBuilder]: At program point L134-2(lines 134 138) the Hoare annotation is: (and (= (_ +zero 11 53) |ULTIMATE.start___ieee754_sqrt_~x#1|) |ULTIMATE.start_main_#t~short14#1| (= |ULTIMATE.start_main_~res~0#1| (_ +zero 11 53)) (= (_ +zero 11 53) |ULTIMATE.start___ieee754_sqrt_#res#1|) (= (_ +zero 11 53) |ULTIMATE.start___signbit_double_~x#1|)) [2021-11-12 22:52:19,845 INFO L858 garLoopResultBuilder]: For program point L134-3(lines 134 138) no Hoare annotation was computed. [2021-11-12 22:52:19,848 INFO L732 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:52:19,850 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-12 22:52:19,868 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 10:52:19 BoogieIcfgContainer [2021-11-12 22:52:19,868 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-12 22:52:19,869 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-12 22:52:19,869 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-12 22:52:19,869 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-12 22:52:19,870 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 10:51:55" (3/4) ... [2021-11-12 22:52:19,873 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-12 22:52:19,888 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2021-11-12 22:52:19,889 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2021-11-12 22:52:19,890 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-11-12 22:52:19,890 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-12 22:52:19,919 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ~Pluszero~LONGDOUBLE() == x && ~Pluszero~LONGDOUBLE() == \result [2021-11-12 22:52:19,920 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((~Pluszero~LONGDOUBLE() == x && aux-res == 0.0 && __signbit_double(res) == 0-aux) && res == ~Pluszero~LONGDOUBLE()) && ~Pluszero~LONGDOUBLE() == \result) && ~Pluszero~LONGDOUBLE() == x [2021-11-12 22:52:19,921 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (~Pluszero~LONGDOUBLE() == x && aux-res == 0.0 && __signbit_double(res) == 0-aux) && 0bv32 == \result [2021-11-12 22:52:19,945 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1b3f791-9181-4868-afb6-7ac2cf5d19a4/bin/utaipan-vmNK8stdcF/witness.graphml [2021-11-12 22:52:19,945 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-12 22:52:19,946 INFO L158 Benchmark]: Toolchain (without parser) took 27386.61ms. Allocated memory was 67.1MB in the beginning and 81.8MB in the end (delta: 14.7MB). Free memory was 46.3MB in the beginning and 38.9MB in the end (delta: 7.4MB). Peak memory consumption was 21.8MB. Max. memory is 16.1GB. [2021-11-12 22:52:19,947 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 67.1MB. Free memory is still 47.1MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 22:52:19,947 INFO L158 Benchmark]: CACSL2BoogieTranslator took 515.34ms. Allocated memory is still 67.1MB. Free memory was 46.0MB in the beginning and 48.1MB in the end (delta: -2.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-12 22:52:19,947 INFO L158 Benchmark]: Boogie Procedure Inliner took 50.64ms. Allocated memory is still 67.1MB. Free memory was 48.1MB in the beginning and 46.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-12 22:52:19,948 INFO L158 Benchmark]: Boogie Preprocessor took 40.99ms. Allocated memory is still 67.1MB. Free memory was 46.0MB in the beginning and 44.2MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-12 22:52:19,948 INFO L158 Benchmark]: RCFGBuilder took 2525.24ms. Allocated memory is still 67.1MB. Free memory was 44.0MB in the beginning and 48.9MB in the end (delta: -4.9MB). Peak memory consumption was 20.9MB. Max. memory is 16.1GB. [2021-11-12 22:52:19,949 INFO L158 Benchmark]: TraceAbstraction took 24163.72ms. Allocated memory was 67.1MB in the beginning and 81.8MB in the end (delta: 14.7MB). Free memory was 48.6MB in the beginning and 43.0MB in the end (delta: 5.6MB). Peak memory consumption was 20.8MB. Max. memory is 16.1GB. [2021-11-12 22:52:19,949 INFO L158 Benchmark]: Witness Printer took 76.68ms. Allocated memory is still 81.8MB. Free memory was 43.0MB in the beginning and 38.9MB in the end (delta: 4.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-12 22:52:19,952 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 67.1MB. Free memory is still 47.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 515.34ms. Allocated memory is still 67.1MB. Free memory was 46.0MB in the beginning and 48.1MB in the end (delta: -2.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 50.64ms. Allocated memory is still 67.1MB. Free memory was 48.1MB in the beginning and 46.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 40.99ms. Allocated memory is still 67.1MB. Free memory was 46.0MB in the beginning and 44.2MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 2525.24ms. Allocated memory is still 67.1MB. Free memory was 44.0MB in the beginning and 48.9MB in the end (delta: -4.9MB). Peak memory consumption was 20.9MB. Max. memory is 16.1GB. * TraceAbstraction took 24163.72ms. Allocated memory was 67.1MB in the beginning and 81.8MB in the end (delta: 14.7MB). Free memory was 48.6MB in the beginning and 43.0MB in the end (delta: 5.6MB). Peak memory consumption was 20.8MB. Max. memory is 16.1GB. * Witness Printer took 76.68ms. Allocated memory is still 81.8MB. Free memory was 43.0MB in the beginning and 38.9MB in the end (delta: 4.2MB). 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 - PositiveResult [Line: 156]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 53 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 24.1s, OverallIterations: 12, TraceHistogramMax: 6, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 7.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.4s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 447 SdHoareTripleChecker+Valid, 5633.69ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 447 mSDsluCounter, 2283 SdHoareTripleChecker+Invalid, 5035.68ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 97 IncrementalHoareTripleChecker+Unchecked, 1604 mSDsCounter, 30 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 324 IncrementalHoareTripleChecker+Invalid, 451 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 30 mSolverCounterUnsat, 679 mSDtfsCounter, 324 mSolverCounterSat, 19.67ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 857 GetRequests, 778 SyntacticMatches, 2 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 4.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=75occurred in iteration=11, InterpolantAutomatonStates: 69, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 12 MinimizatonAttempts, 29 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 10 LocationsWithAnnotation, 10 PreInvPairs, 15 NumberOfFragments, 42 HoareAnnotationTreeSize, 10 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 10 FomulaSimplificationsInter, 24 FormulaSimplificationTreeSizeReductionInter, 0.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 2.1s SatisfiabilityAnalysisTime, 10.5s InterpolantComputationTime, 434 NumberOfCodeBlocks, 409 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 838 ConstructedInterpolants, 45 QuantifiedInterpolants, 2055 SizeOfPredicates, 51 NumberOfNonLiveVariables, 1245 ConjunctsInSsa, 88 ConjunctsInUnsatCore, 30 InterpolantComputations, 22 PerfectInterpolantSequences, 166/206 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 71]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 84]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 21]: Loop Invariant Derived loop invariant: ~Pluszero~LONGDOUBLE() == x && ~Pluszero~LONGDOUBLE() == \result - InvariantResult [Line: 52]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 134]: Loop Invariant Derived loop invariant: (((~Pluszero~LONGDOUBLE() == x && aux-res == 0.0 && __signbit_double(res) == 0-aux) && res == ~Pluszero~LONGDOUBLE()) && ~Pluszero~LONGDOUBLE() == \result) && ~Pluszero~LONGDOUBLE() == x - InvariantResult [Line: 47]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 143]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 131]: Loop Invariant Derived loop invariant: (~Pluszero~LONGDOUBLE() == x && aux-res == 0.0 && __signbit_double(res) == 0-aux) && 0bv32 == \result - InvariantResult [Line: 122]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 27]: Loop Invariant Derived loop invariant: sign == 2147483648bv32 && ~Pluszero~LONGDOUBLE() == x RESULT: Ultimate proved your program to be correct! [2021-11-12 22:52:20,085 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b1b3f791-9181-4868-afb6-7ac2cf5d19a4/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE