./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_1250.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f68dc34-3ee9-48eb-bf5b-3a312a486ae1/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f68dc34-3ee9-48eb-bf5b-3a312a486ae1/bin/utaipan-TEXQjIfE4P/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f68dc34-3ee9-48eb-bf5b-3a312a486ae1/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f68dc34-3ee9-48eb-bf5b-3a312a486ae1/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1250.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f68dc34-3ee9-48eb-bf5b-3a312a486ae1/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f68dc34-3ee9-48eb-bf5b-3a312a486ae1/bin/utaipan-TEXQjIfE4P --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 b1947c2cfa9d661d99206b001fd8998d6aae9b547d6aa58efd3f1b0fdfd07645 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-21 01:42:05,962 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-21 01:42:05,965 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-21 01:42:06,015 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-21 01:42:06,016 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-21 01:42:06,020 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-21 01:42:06,022 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-21 01:42:06,026 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-21 01:42:06,028 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-21 01:42:06,034 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-21 01:42:06,035 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-21 01:42:06,037 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-21 01:42:06,037 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-21 01:42:06,040 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-21 01:42:06,043 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-21 01:42:06,051 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-21 01:42:06,054 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-21 01:42:06,056 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-21 01:42:06,059 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-21 01:42:06,067 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-21 01:42:06,069 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-21 01:42:06,070 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-21 01:42:06,071 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-21 01:42:06,072 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-21 01:42:06,076 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-21 01:42:06,076 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-21 01:42:06,077 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-21 01:42:06,078 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-21 01:42:06,079 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-21 01:42:06,080 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-21 01:42:06,080 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-21 01:42:06,081 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-21 01:42:06,082 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-21 01:42:06,083 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-21 01:42:06,084 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-21 01:42:06,084 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-21 01:42:06,085 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-21 01:42:06,086 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-21 01:42:06,086 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-21 01:42:06,087 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-21 01:42:06,088 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-21 01:42:06,089 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f68dc34-3ee9-48eb-bf5b-3a312a486ae1/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-21 01:42:06,138 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-21 01:42:06,138 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-21 01:42:06,138 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-21 01:42:06,139 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-21 01:42:06,139 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-21 01:42:06,140 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-21 01:42:06,140 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-21 01:42:06,140 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-21 01:42:06,140 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-21 01:42:06,140 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-21 01:42:06,141 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-21 01:42:06,141 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-21 01:42:06,141 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-21 01:42:06,141 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-21 01:42:06,141 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-21 01:42:06,141 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-21 01:42:06,142 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-21 01:42:06,142 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-21 01:42:06,143 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-21 01:42:06,143 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-21 01:42:06,143 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-21 01:42:06,143 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-21 01:42:06,143 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-21 01:42:06,143 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-21 01:42:06,144 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-21 01:42:06,144 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-21 01:42:06,144 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-21 01:42:06,144 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-21 01:42:06,144 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-21 01:42:06,144 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-21 01:42:06,145 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-21 01:42:06,145 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-21 01:42:06,145 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:42:06,145 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-21 01:42:06,145 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-21 01:42:06,146 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-21 01:42:06,146 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-21 01:42:06,146 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-21 01:42:06,146 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-21 01:42:06,146 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-21 01:42:06,147 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-21 01:42:06,147 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_1f68dc34-3ee9-48eb-bf5b-3a312a486ae1/bin/utaipan-TEXQjIfE4P/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f68dc34-3ee9-48eb-bf5b-3a312a486ae1/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b1947c2cfa9d661d99206b001fd8998d6aae9b547d6aa58efd3f1b0fdfd07645 [2021-11-21 01:42:06,462 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-21 01:42:06,490 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-21 01:42:06,493 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-21 01:42:06,494 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-21 01:42:06,495 INFO L275 PluginConnector]: CDTParser initialized [2021-11-21 01:42:06,496 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f68dc34-3ee9-48eb-bf5b-3a312a486ae1/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/float-newlib/float_req_bl_1250.c [2021-11-21 01:42:06,569 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f68dc34-3ee9-48eb-bf5b-3a312a486ae1/bin/utaipan-TEXQjIfE4P/data/d2f76750e/cfb82b57328a4a8d812891134d66e3cc/FLAGe48ce5205 [2021-11-21 01:42:07,007 INFO L306 CDTParser]: Found 1 translation units. [2021-11-21 01:42:07,008 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f68dc34-3ee9-48eb-bf5b-3a312a486ae1/sv-benchmarks/c/float-newlib/float_req_bl_1250.c [2021-11-21 01:42:07,015 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f68dc34-3ee9-48eb-bf5b-3a312a486ae1/bin/utaipan-TEXQjIfE4P/data/d2f76750e/cfb82b57328a4a8d812891134d66e3cc/FLAGe48ce5205 [2021-11-21 01:42:07,416 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f68dc34-3ee9-48eb-bf5b-3a312a486ae1/bin/utaipan-TEXQjIfE4P/data/d2f76750e/cfb82b57328a4a8d812891134d66e3cc [2021-11-21 01:42:07,419 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-21 01:42:07,422 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-21 01:42:07,428 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-21 01:42:07,428 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-21 01:42:07,432 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-21 01:42:07,433 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:42:07" (1/1) ... [2021-11-21 01:42:07,435 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44f60977 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:42:07, skipping insertion in model container [2021-11-21 01:42:07,436 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:42:07" (1/1) ... [2021-11-21 01:42:07,443 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-21 01:42:07,457 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-21 01:42:07,641 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f68dc34-3ee9-48eb-bf5b-3a312a486ae1/sv-benchmarks/c/float-newlib/float_req_bl_1250.c[1719,1732] [2021-11-21 01:42:07,643 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:42:07,651 INFO L203 MainTranslator]: Completed pre-run [2021-11-21 01:42:07,671 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f68dc34-3ee9-48eb-bf5b-3a312a486ae1/sv-benchmarks/c/float-newlib/float_req_bl_1250.c[1719,1732] [2021-11-21 01:42:07,672 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:42:07,687 INFO L208 MainTranslator]: Completed translation [2021-11-21 01:42:07,687 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:42:07 WrapperNode [2021-11-21 01:42:07,687 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-21 01:42:07,688 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-21 01:42:07,689 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-21 01:42:07,689 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-21 01:42:07,696 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:42:07" (1/1) ... [2021-11-21 01:42:07,704 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:42:07" (1/1) ... [2021-11-21 01:42:07,723 INFO L137 Inliner]: procedures = 17, calls = 15, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 50 [2021-11-21 01:42:07,723 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-21 01:42:07,724 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-21 01:42:07,724 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-21 01:42:07,724 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-21 01:42:07,732 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:42:07" (1/1) ... [2021-11-21 01:42:07,733 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:42:07" (1/1) ... [2021-11-21 01:42:07,735 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:42:07" (1/1) ... [2021-11-21 01:42:07,735 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:42:07" (1/1) ... [2021-11-21 01:42:07,742 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:42:07" (1/1) ... [2021-11-21 01:42:07,746 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:42:07" (1/1) ... [2021-11-21 01:42:07,747 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:42:07" (1/1) ... [2021-11-21 01:42:07,749 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-21 01:42:07,750 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-21 01:42:07,750 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-21 01:42:07,750 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-21 01:42:07,754 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:42:07" (1/1) ... [2021-11-21 01:42:07,762 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:42:07,776 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f68dc34-3ee9-48eb-bf5b-3a312a486ae1/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:42:07,806 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f68dc34-3ee9-48eb-bf5b-3a312a486ae1/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-21 01:42:07,842 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f68dc34-3ee9-48eb-bf5b-3a312a486ae1/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-21 01:42:07,861 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-21 01:42:07,861 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-21 01:42:07,861 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-21 01:42:07,862 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_float [2021-11-21 01:42:07,862 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_float [2021-11-21 01:42:07,862 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-11-21 01:42:07,862 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-21 01:42:07,862 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-21 01:42:07,863 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-21 01:42:07,863 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-21 01:42:07,943 INFO L236 CfgBuilder]: Building ICFG [2021-11-21 01:42:07,945 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-21 01:42:08,161 INFO L277 CfgBuilder]: Performing block encoding [2021-11-21 01:42:08,230 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-21 01:42:08,230 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-21 01:42:08,232 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:42:08 BoogieIcfgContainer [2021-11-21 01:42:08,233 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-21 01:42:08,234 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-21 01:42:08,235 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-21 01:42:08,238 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-21 01:42:08,238 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 01:42:07" (1/3) ... [2021-11-21 01:42:08,239 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c30859f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:42:08, skipping insertion in model container [2021-11-21 01:42:08,239 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:42:07" (2/3) ... [2021-11-21 01:42:08,240 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c30859f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:42:08, skipping insertion in model container [2021-11-21 01:42:08,240 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:42:08" (3/3) ... [2021-11-21 01:42:08,241 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1250.c [2021-11-21 01:42:08,246 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-21 01:42:08,247 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-21 01:42:08,303 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-21 01:42:08,312 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 [2021-11-21 01:42:08,312 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-21 01:42:08,329 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-21 01:42:08,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-21 01:42:08,334 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:42:08,335 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:42:08,335 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:42:08,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:42:08,341 INFO L85 PathProgramCache]: Analyzing trace with hash -1260003311, now seen corresponding path program 1 times [2021-11-21 01:42:08,349 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:42:08,349 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440538020] [2021-11-21 01:42:08,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:42:08,351 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:42:08,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:42:08,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:42:08,492 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:42:08,493 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440538020] [2021-11-21 01:42:08,494 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [440538020] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:42:08,494 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:42:08,494 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-21 01:42:08,496 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786035578] [2021-11-21 01:42:08,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:42:08,501 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-21 01:42:08,502 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:42:08,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-21 01:42:08,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-21 01:42:08,536 INFO L87 Difference]: Start difference. First operand has 17 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-21 01:42:08,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:42:08,589 INFO L93 Difference]: Finished difference Result 32 states and 41 transitions. [2021-11-21 01:42:08,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-21 01:42:08,592 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2021-11-21 01:42:08,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:42:08,604 INFO L225 Difference]: With dead ends: 32 [2021-11-21 01:42:08,606 INFO L226 Difference]: Without dead ends: 15 [2021-11-21 01:42:08,610 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 [2021-11-21 01:42:08,618 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-21 01:42:08,620 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 13 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-21 01:42:08,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-11-21 01:42:08,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2021-11-21 01:42:08,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 states have internal predecessors, (12), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-21 01:42:08,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2021-11-21 01:42:08,656 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 11 [2021-11-21 01:42:08,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:42:08,656 INFO L470 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2021-11-21 01:42:08,657 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-21 01:42:08,657 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2021-11-21 01:42:08,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-21 01:42:08,658 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:42:08,658 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:42:08,659 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-21 01:42:08,659 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:42:08,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:42:08,660 INFO L85 PathProgramCache]: Analyzing trace with hash 1572527946, now seen corresponding path program 1 times [2021-11-21 01:42:08,660 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:42:08,661 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364725516] [2021-11-21 01:42:08,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:42:08,661 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:42:08,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-21 01:42:08,752 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-21 01:42:08,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-21 01:42:08,859 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-21 01:42:08,859 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-21 01:42:08,861 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-21 01:42:08,864 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-21 01:42:08,867 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2021-11-21 01:42:08,871 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-21 01:42:08,907 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.11 01:42:08 BoogieIcfgContainer [2021-11-21 01:42:08,908 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-21 01:42:08,909 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-21 01:42:08,909 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-21 01:42:08,909 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-21 01:42:08,910 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:42:08" (3/4) ... [2021-11-21 01:42:08,913 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-21 01:42:08,913 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-21 01:42:08,914 INFO L158 Benchmark]: Toolchain (without parser) took 1491.91ms. Allocated memory was 100.7MB in the beginning and 121.6MB in the end (delta: 21.0MB). Free memory was 59.3MB in the beginning and 96.7MB in the end (delta: -37.4MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-21 01:42:08,914 INFO L158 Benchmark]: CDTParser took 0.24ms. Allocated memory is still 100.7MB. Free memory is still 76.1MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-21 01:42:08,915 INFO L158 Benchmark]: CACSL2BoogieTranslator took 259.78ms. Allocated memory is still 100.7MB. Free memory was 59.1MB in the beginning and 75.8MB in the end (delta: -16.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-21 01:42:08,916 INFO L158 Benchmark]: Boogie Procedure Inliner took 35.14ms. Allocated memory is still 100.7MB. Free memory was 75.8MB in the beginning and 74.1MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-21 01:42:08,916 INFO L158 Benchmark]: Boogie Preprocessor took 24.99ms. Allocated memory is still 100.7MB. Free memory was 74.1MB in the beginning and 72.9MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-21 01:42:08,917 INFO L158 Benchmark]: RCFGBuilder took 482.90ms. Allocated memory is still 100.7MB. Free memory was 72.9MB in the beginning and 59.2MB in the end (delta: 13.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-21 01:42:08,918 INFO L158 Benchmark]: TraceAbstraction took 673.37ms. Allocated memory was 100.7MB in the beginning and 121.6MB in the end (delta: 21.0MB). Free memory was 58.7MB in the beginning and 97.5MB in the end (delta: -38.8MB). Peak memory consumption was 31.9MB. Max. memory is 16.1GB. [2021-11-21 01:42:08,918 INFO L158 Benchmark]: Witness Printer took 4.43ms. Allocated memory is still 121.6MB. Free memory was 97.5MB in the beginning and 96.7MB in the end (delta: 790.1kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-21 01:42:08,922 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24ms. Allocated memory is still 100.7MB. Free memory is still 76.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 259.78ms. Allocated memory is still 100.7MB. Free memory was 59.1MB in the beginning and 75.8MB in the end (delta: -16.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 35.14ms. Allocated memory is still 100.7MB. Free memory was 75.8MB in the beginning and 74.1MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 24.99ms. Allocated memory is still 100.7MB. Free memory was 74.1MB in the beginning and 72.9MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 482.90ms. Allocated memory is still 100.7MB. Free memory was 72.9MB in the beginning and 59.2MB in the end (delta: 13.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 673.37ms. Allocated memory was 100.7MB in the beginning and 121.6MB in the end (delta: 21.0MB). Free memory was 58.7MB in the beginning and 97.5MB in the end (delta: -38.8MB). Peak memory consumption was 31.9MB. Max. memory is 16.1GB. * Witness Printer took 4.43ms. Allocated memory is still 121.6MB. Free memory was 97.5MB in the beginning and 96.7MB in the end (delta: 790.1kB). 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: 67]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 56, overapproximation of someBinaryArithmeticFLOAToperation at line 62. Possible FailurePath: [L62] float x = 0.0f / 0.0f; [L63] float y = 0.0f / 0.0f; [L64] CALL, EXPR fmax_float(x, y) [L45] CALL, EXPR __fpclassify_float(x) VAL [\old(x)=2147483649] [L22] __uint32_t w; VAL [\old(x)=2147483649, x=2147483649] [L25] ieee_float_shape_type gf_u; [L26] gf_u.value = (x) [L27] EXPR gf_u.word [L27] (w) = gf_u.word [L30] COND FALSE !(w == 0x00000000 || w == 0x80000000) [L32-L33] COND FALSE !((w >= 0x00800000 && w <= 0x7f7fffff) || (w >= 0x80800000 && w <= 0xff7fffff)) [L35-L36] COND FALSE !((w >= 0x00000001 && w <= 0x007fffff) || (w >= 0x80000001 && w <= 0x807fffff)) [L38] COND FALSE !(w == 0x7f800000 || w == 0xff800000) [L41] return 0; [L45] RET, EXPR __fpclassify_float(x) VAL [\old(x)=2147483649, \old(y)=2147483648, __fpclassify_float(x)=0, x=2147483649, y=2147483648] [L45] COND TRUE __fpclassify_float(x) == 0 [L46] return y; VAL [\old(x)=2147483649, \old(y)=2147483648, \result=2147483648, x=2147483649, y=2147483648] [L64] RET, EXPR fmax_float(x, y) [L64] float res = fmax_float(x, y); [L66] CALL, EXPR isnan_float(res) [L56] return x != x; [L66] RET, EXPR isnan_float(res) [L66] COND TRUE !isnan_float(res) [L67] reach_error() VAL [res=2147483648, x=2147483649, y=2147483648] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 17 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.6s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 13 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5 IncrementalHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 13 mSDtfsCounter, 5 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17occurred 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, 0.0s InterpolantComputationTime, 23 NumberOfCodeBlocks, 23 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 10 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 [2021-11-21 01:42:08,977 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f68dc34-3ee9-48eb-bf5b-3a312a486ae1/bin/utaipan-TEXQjIfE4P/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_1f68dc34-3ee9-48eb-bf5b-3a312a486ae1/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f68dc34-3ee9-48eb-bf5b-3a312a486ae1/bin/utaipan-TEXQjIfE4P/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f68dc34-3ee9-48eb-bf5b-3a312a486ae1/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f68dc34-3ee9-48eb-bf5b-3a312a486ae1/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1250.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f68dc34-3ee9-48eb-bf5b-3a312a486ae1/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f68dc34-3ee9-48eb-bf5b-3a312a486ae1/bin/utaipan-TEXQjIfE4P --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 b1947c2cfa9d661d99206b001fd8998d6aae9b547d6aa58efd3f1b0fdfd07645 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-21 01:42:11,606 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-21 01:42:11,608 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-21 01:42:11,668 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-21 01:42:11,671 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-21 01:42:11,677 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-21 01:42:11,680 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-21 01:42:11,691 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-21 01:42:11,695 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-21 01:42:11,706 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-21 01:42:11,708 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-21 01:42:11,709 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-21 01:42:11,710 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-21 01:42:11,713 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-21 01:42:11,715 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-21 01:42:11,717 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-21 01:42:11,721 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-21 01:42:11,722 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-21 01:42:11,728 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-21 01:42:11,732 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-21 01:42:11,739 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-21 01:42:11,741 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-21 01:42:11,743 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-21 01:42:11,745 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-21 01:42:11,753 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-21 01:42:11,753 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-21 01:42:11,754 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-21 01:42:11,756 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-21 01:42:11,757 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-21 01:42:11,758 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-21 01:42:11,759 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-21 01:42:11,760 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-21 01:42:11,762 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-21 01:42:11,764 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-21 01:42:11,765 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-21 01:42:11,766 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-21 01:42:11,767 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-21 01:42:11,767 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-21 01:42:11,768 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-21 01:42:11,770 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-21 01:42:11,771 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-21 01:42:11,772 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f68dc34-3ee9-48eb-bf5b-3a312a486ae1/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-21 01:42:11,826 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-21 01:42:11,826 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-21 01:42:11,827 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-21 01:42:11,827 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-21 01:42:11,828 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-21 01:42:11,829 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-21 01:42:11,829 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-21 01:42:11,829 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-21 01:42:11,829 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-21 01:42:11,830 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-21 01:42:11,831 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-21 01:42:11,831 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-21 01:42:11,833 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-21 01:42:11,833 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-21 01:42:11,833 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-21 01:42:11,834 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-21 01:42:11,834 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-21 01:42:11,834 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-21 01:42:11,834 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-21 01:42:11,835 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-21 01:42:11,835 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-21 01:42:11,835 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-21 01:42:11,835 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-21 01:42:11,836 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-21 01:42:11,836 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-21 01:42:11,836 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-21 01:42:11,837 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-21 01:42:11,837 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-21 01:42:11,837 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:42:11,837 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-21 01:42:11,838 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-21 01:42:11,838 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-21 01:42:11,838 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-21 01:42:11,839 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-21 01:42:11,839 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-21 01:42:11,839 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-21 01:42:11,839 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-21 01:42:11,840 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_1f68dc34-3ee9-48eb-bf5b-3a312a486ae1/bin/utaipan-TEXQjIfE4P/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f68dc34-3ee9-48eb-bf5b-3a312a486ae1/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b1947c2cfa9d661d99206b001fd8998d6aae9b547d6aa58efd3f1b0fdfd07645 [2021-11-21 01:42:12,295 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-21 01:42:12,327 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-21 01:42:12,330 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-21 01:42:12,331 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-21 01:42:12,333 INFO L275 PluginConnector]: CDTParser initialized [2021-11-21 01:42:12,335 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f68dc34-3ee9-48eb-bf5b-3a312a486ae1/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/float-newlib/float_req_bl_1250.c [2021-11-21 01:42:12,417 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f68dc34-3ee9-48eb-bf5b-3a312a486ae1/bin/utaipan-TEXQjIfE4P/data/4fdc3d41c/572dee762dae4251ad9014e58ff7c697/FLAG2ff45d70e [2021-11-21 01:42:13,076 INFO L306 CDTParser]: Found 1 translation units. [2021-11-21 01:42:13,078 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f68dc34-3ee9-48eb-bf5b-3a312a486ae1/sv-benchmarks/c/float-newlib/float_req_bl_1250.c [2021-11-21 01:42:13,088 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f68dc34-3ee9-48eb-bf5b-3a312a486ae1/bin/utaipan-TEXQjIfE4P/data/4fdc3d41c/572dee762dae4251ad9014e58ff7c697/FLAG2ff45d70e [2021-11-21 01:42:13,410 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f68dc34-3ee9-48eb-bf5b-3a312a486ae1/bin/utaipan-TEXQjIfE4P/data/4fdc3d41c/572dee762dae4251ad9014e58ff7c697 [2021-11-21 01:42:13,417 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-21 01:42:13,421 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-21 01:42:13,422 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-21 01:42:13,423 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-21 01:42:13,427 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-21 01:42:13,427 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:42:13" (1/1) ... [2021-11-21 01:42:13,431 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3aff9dc7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:42:13, skipping insertion in model container [2021-11-21 01:42:13,431 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:42:13" (1/1) ... [2021-11-21 01:42:13,439 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-21 01:42:13,459 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-21 01:42:13,631 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f68dc34-3ee9-48eb-bf5b-3a312a486ae1/sv-benchmarks/c/float-newlib/float_req_bl_1250.c[1719,1732] [2021-11-21 01:42:13,634 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:42:13,648 INFO L203 MainTranslator]: Completed pre-run [2021-11-21 01:42:13,673 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f68dc34-3ee9-48eb-bf5b-3a312a486ae1/sv-benchmarks/c/float-newlib/float_req_bl_1250.c[1719,1732] [2021-11-21 01:42:13,673 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:42:13,707 INFO L208 MainTranslator]: Completed translation [2021-11-21 01:42:13,708 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:42:13 WrapperNode [2021-11-21 01:42:13,709 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-21 01:42:13,710 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-21 01:42:13,710 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-21 01:42:13,710 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-21 01:42:13,718 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:42:13" (1/1) ... [2021-11-21 01:42:13,740 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:42:13" (1/1) ... [2021-11-21 01:42:13,783 INFO L137 Inliner]: procedures = 20, calls = 15, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 48 [2021-11-21 01:42:13,784 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-21 01:42:13,785 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-21 01:42:13,785 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-21 01:42:13,786 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-21 01:42:13,796 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:42:13" (1/1) ... [2021-11-21 01:42:13,796 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:42:13" (1/1) ... [2021-11-21 01:42:13,807 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:42:13" (1/1) ... [2021-11-21 01:42:13,807 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:42:13" (1/1) ... [2021-11-21 01:42:13,825 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:42:13" (1/1) ... [2021-11-21 01:42:13,829 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:42:13" (1/1) ... [2021-11-21 01:42:13,831 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:42:13" (1/1) ... [2021-11-21 01:42:13,835 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-21 01:42:13,836 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-21 01:42:13,836 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-21 01:42:13,836 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-21 01:42:13,849 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:42:13" (1/1) ... [2021-11-21 01:42:13,857 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:42:13,870 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f68dc34-3ee9-48eb-bf5b-3a312a486ae1/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:42:13,883 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f68dc34-3ee9-48eb-bf5b-3a312a486ae1/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-21 01:42:13,887 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f68dc34-3ee9-48eb-bf5b-3a312a486ae1/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-21 01:42:13,927 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-21 01:42:13,927 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-21 01:42:13,927 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-21 01:42:13,927 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_float [2021-11-21 01:42:13,928 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_float [2021-11-21 01:42:13,928 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-21 01:42:13,928 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-21 01:42:13,928 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-21 01:42:13,928 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2021-11-21 01:42:13,928 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-21 01:42:14,010 INFO L236 CfgBuilder]: Building ICFG [2021-11-21 01:42:14,012 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-21 01:42:14,174 INFO L277 CfgBuilder]: Performing block encoding [2021-11-21 01:42:14,180 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-21 01:42:14,180 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-21 01:42:14,182 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:42:14 BoogieIcfgContainer [2021-11-21 01:42:14,182 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-21 01:42:14,184 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-21 01:42:14,185 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-21 01:42:14,188 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-21 01:42:14,188 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 01:42:13" (1/3) ... [2021-11-21 01:42:14,189 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@226e5492 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:42:14, skipping insertion in model container [2021-11-21 01:42:14,189 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:42:13" (2/3) ... [2021-11-21 01:42:14,190 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@226e5492 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:42:14, skipping insertion in model container [2021-11-21 01:42:14,190 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:42:14" (3/3) ... [2021-11-21 01:42:14,192 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1250.c [2021-11-21 01:42:14,198 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-21 01:42:14,198 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-21 01:42:14,283 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-21 01:42:14,307 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 [2021-11-21 01:42:14,307 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-21 01:42:14,370 INFO L276 IsEmpty]: Start isEmpty. Operand has 25 states, 20 states have (on average 1.55) internal successors, (31), 21 states have internal predecessors, (31), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-21 01:42:14,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-21 01:42:14,376 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:42:14,377 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:42:14,378 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:42:14,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:42:14,408 INFO L85 PathProgramCache]: Analyzing trace with hash 2048951326, now seen corresponding path program 1 times [2021-11-21 01:42:14,433 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:42:14,434 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1277055651] [2021-11-21 01:42:14,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:42:14,435 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:42:14,436 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f68dc34-3ee9-48eb-bf5b-3a312a486ae1/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:42:14,481 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f68dc34-3ee9-48eb-bf5b-3a312a486ae1/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:42:14,541 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f68dc34-3ee9-48eb-bf5b-3a312a486ae1/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-21 01:42:14,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:42:14,610 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-21 01:42:14,615 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:42:14,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:42:14,678 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:42:14,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:42:14,721 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:42:14,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1277055651] [2021-11-21 01:42:14,722 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1277055651] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 01:42:14,723 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:42:14,723 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-21 01:42:14,725 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993364778] [2021-11-21 01:42:14,726 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 01:42:14,730 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-21 01:42:14,731 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:42:14,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-21 01:42:14,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-21 01:42:14,762 INFO L87 Difference]: Start difference. First operand has 25 states, 20 states have (on average 1.55) internal successors, (31), 21 states have internal predecessors, (31), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-21 01:42:14,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:42:14,792 INFO L93 Difference]: Finished difference Result 47 states and 68 transitions. [2021-11-21 01:42:14,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-21 01:42:14,795 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2021-11-21 01:42:14,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:42:14,811 INFO L225 Difference]: With dead ends: 47 [2021-11-21 01:42:14,811 INFO L226 Difference]: Without dead ends: 22 [2021-11-21 01:42:14,821 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-21 01:42:14,832 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-21 01:42:14,834 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-21 01:42:14,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2021-11-21 01:42:14,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2021-11-21 01:42:14,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 18 states have internal predecessors, (25), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-21 01:42:14,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 29 transitions. [2021-11-21 01:42:14,898 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 29 transitions. Word has length 13 [2021-11-21 01:42:14,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:42:14,899 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 29 transitions. [2021-11-21 01:42:14,899 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-21 01:42:14,899 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 29 transitions. [2021-11-21 01:42:14,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-21 01:42:14,904 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:42:14,904 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:42:14,926 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f68dc34-3ee9-48eb-bf5b-3a312a486ae1/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-21 01:42:15,126 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f68dc34-3ee9-48eb-bf5b-3a312a486ae1/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 01:42:15,127 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:42:15,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:42:15,128 INFO L85 PathProgramCache]: Analyzing trace with hash 1561923165, now seen corresponding path program 1 times [2021-11-21 01:42:15,128 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:42:15,129 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [868228934] [2021-11-21 01:42:15,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:42:15,129 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:42:15,129 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f68dc34-3ee9-48eb-bf5b-3a312a486ae1/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:42:15,135 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f68dc34-3ee9-48eb-bf5b-3a312a486ae1/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:42:15,144 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f68dc34-3ee9-48eb-bf5b-3a312a486ae1/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-21 01:42:15,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:42:15,248 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-21 01:42:15,249 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:42:15,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:42:15,366 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:42:15,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:42:15,438 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:42:15,439 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [868228934] [2021-11-21 01:42:15,439 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [868228934] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 01:42:15,439 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:42:15,439 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-21 01:42:15,439 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709557844] [2021-11-21 01:42:15,440 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 01:42:15,441 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-21 01:42:15,441 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:42:15,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-21 01:42:15,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-21 01:42:15,442 INFO L87 Difference]: Start difference. First operand 22 states and 29 transitions. Second operand has 6 states, 6 states have (on average 2.5) internal successors, (15), 4 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-21 01:42:15,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:42:15,506 INFO L93 Difference]: Finished difference Result 33 states and 43 transitions. [2021-11-21 01:42:15,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 01:42:15,507 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 4 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 14 [2021-11-21 01:42:15,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:42:15,510 INFO L225 Difference]: With dead ends: 33 [2021-11-21 01:42:15,511 INFO L226 Difference]: Without dead ends: 28 [2021-11-21 01:42:15,518 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-21 01:42:15,521 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 0 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-21 01:42:15,521 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 103 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-21 01:42:15,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-11-21 01:42:15,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 25. [2021-11-21 01:42:15,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 20 states have (on average 1.35) internal successors, (27), 20 states have internal predecessors, (27), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-21 01:42:15,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 33 transitions. [2021-11-21 01:42:15,545 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 33 transitions. Word has length 14 [2021-11-21 01:42:15,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:42:15,546 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 33 transitions. [2021-11-21 01:42:15,546 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 4 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-21 01:42:15,546 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 33 transitions. [2021-11-21 01:42:15,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-21 01:42:15,548 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:42:15,548 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:42:15,570 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f68dc34-3ee9-48eb-bf5b-3a312a486ae1/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-21 01:42:15,764 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f68dc34-3ee9-48eb-bf5b-3a312a486ae1/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 01:42:15,764 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:42:15,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:42:15,765 INFO L85 PathProgramCache]: Analyzing trace with hash 1417426806, now seen corresponding path program 1 times [2021-11-21 01:42:15,773 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:42:15,775 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1544607583] [2021-11-21 01:42:15,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:42:15,776 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:42:15,776 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f68dc34-3ee9-48eb-bf5b-3a312a486ae1/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:42:15,779 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f68dc34-3ee9-48eb-bf5b-3a312a486ae1/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:42:15,804 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f68dc34-3ee9-48eb-bf5b-3a312a486ae1/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-21 01:42:15,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:42:15,856 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-21 01:42:15,858 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:42:16,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:42:16,072 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:42:16,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:42:16,205 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:42:16,206 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1544607583] [2021-11-21 01:42:16,206 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1544607583] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 01:42:16,206 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:42:16,206 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2021-11-21 01:42:16,207 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842511134] [2021-11-21 01:42:16,207 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 01:42:16,207 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-21 01:42:16,207 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:42:16,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-21 01:42:16,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-11-21 01:42:16,209 INFO L87 Difference]: Start difference. First operand 25 states and 33 transitions. Second operand has 10 states, 10 states have (on average 2.0) internal successors, (20), 10 states have internal predecessors, (20), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-21 01:42:16,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:42:16,344 INFO L93 Difference]: Finished difference Result 34 states and 41 transitions. [2021-11-21 01:42:16,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 01:42:16,345 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.0) internal successors, (20), 10 states have internal predecessors, (20), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 17 [2021-11-21 01:42:16,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:42:16,346 INFO L225 Difference]: With dead ends: 34 [2021-11-21 01:42:16,346 INFO L226 Difference]: Without dead ends: 25 [2021-11-21 01:42:16,347 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2021-11-21 01:42:16,348 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 7 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 01:42:16,348 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 132 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 1 Unchecked, 0.1s Time] [2021-11-21 01:42:16,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2021-11-21 01:42:16,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 22. [2021-11-21 01:42:16,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 18 states have internal predecessors, (23), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-21 01:42:16,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 27 transitions. [2021-11-21 01:42:16,354 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 27 transitions. Word has length 17 [2021-11-21 01:42:16,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:42:16,354 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 27 transitions. [2021-11-21 01:42:16,354 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.0) internal successors, (20), 10 states have internal predecessors, (20), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-21 01:42:16,355 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 27 transitions. [2021-11-21 01:42:16,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-21 01:42:16,355 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:42:16,356 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:42:16,377 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f68dc34-3ee9-48eb-bf5b-3a312a486ae1/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-21 01:42:16,556 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f68dc34-3ee9-48eb-bf5b-3a312a486ae1/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 01:42:16,557 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:42:16,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:42:16,557 INFO L85 PathProgramCache]: Analyzing trace with hash 642927512, now seen corresponding path program 1 times [2021-11-21 01:42:16,558 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:42:16,558 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1516908053] [2021-11-21 01:42:16,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:42:16,558 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:42:16,558 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f68dc34-3ee9-48eb-bf5b-3a312a486ae1/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:42:16,559 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f68dc34-3ee9-48eb-bf5b-3a312a486ae1/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:42:16,566 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f68dc34-3ee9-48eb-bf5b-3a312a486ae1/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-21 01:42:16,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:42:16,651 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-21 01:42:16,653 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:42:16,707 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-21 01:42:16,707 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:42:16,780 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-21 01:42:16,781 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:42:16,781 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1516908053] [2021-11-21 01:42:16,784 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1516908053] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 01:42:16,784 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:42:16,785 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-21 01:42:16,785 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320269941] [2021-11-21 01:42:16,785 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 01:42:16,786 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-21 01:42:16,786 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:42:16,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-21 01:42:16,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-21 01:42:16,788 INFO L87 Difference]: Start difference. First operand 22 states and 27 transitions. Second operand has 6 states, 6 states have (on average 3.0) internal successors, (18), 4 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-21 01:42:16,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:42:16,872 INFO L93 Difference]: Finished difference Result 33 states and 41 transitions. [2021-11-21 01:42:16,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 01:42:16,873 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 4 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) Word has length 22 [2021-11-21 01:42:16,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:42:16,874 INFO L225 Difference]: With dead ends: 33 [2021-11-21 01:42:16,874 INFO L226 Difference]: Without dead ends: 28 [2021-11-21 01:42:16,875 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-21 01:42:16,876 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 0 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 01:42:16,876 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 115 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 01:42:16,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-11-21 01:42:16,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 25. [2021-11-21 01:42:16,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 20 states have (on average 1.25) internal successors, (25), 20 states have internal predecessors, (25), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-21 01:42:16,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 31 transitions. [2021-11-21 01:42:16,885 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 31 transitions. Word has length 22 [2021-11-21 01:42:16,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:42:16,886 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 31 transitions. [2021-11-21 01:42:16,886 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 4 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-21 01:42:16,886 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 31 transitions. [2021-11-21 01:42:16,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-21 01:42:16,889 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:42:16,889 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:42:16,903 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f68dc34-3ee9-48eb-bf5b-3a312a486ae1/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-21 01:42:17,093 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f68dc34-3ee9-48eb-bf5b-3a312a486ae1/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 01:42:17,094 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:42:17,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:42:17,095 INFO L85 PathProgramCache]: Analyzing trace with hash 1034693180, now seen corresponding path program 1 times [2021-11-21 01:42:17,095 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:42:17,096 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1443829275] [2021-11-21 01:42:17,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:42:17,096 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:42:17,096 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f68dc34-3ee9-48eb-bf5b-3a312a486ae1/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:42:17,097 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f68dc34-3ee9-48eb-bf5b-3a312a486ae1/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:42:17,109 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f68dc34-3ee9-48eb-bf5b-3a312a486ae1/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-21 01:42:17,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:42:17,172 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-21 01:42:17,173 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:42:17,392 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 01:42:17,393 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:42:17,571 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 01:42:17,572 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:42:17,572 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1443829275] [2021-11-21 01:42:17,572 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1443829275] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 01:42:17,572 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:42:17,573 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 12 [2021-11-21 01:42:17,573 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395635208] [2021-11-21 01:42:17,573 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 01:42:17,573 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-21 01:42:17,574 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:42:17,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-21 01:42:17,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-11-21 01:42:17,575 INFO L87 Difference]: Start difference. First operand 25 states and 31 transitions. Second operand has 12 states, 12 states have (on average 1.9166666666666667) internal successors, (23), 12 states have internal predecessors, (23), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-21 01:42:17,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:42:17,786 INFO L93 Difference]: Finished difference Result 30 states and 35 transitions. [2021-11-21 01:42:17,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-21 01:42:17,786 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.9166666666666667) internal successors, (23), 12 states have internal predecessors, (23), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 24 [2021-11-21 01:42:17,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:42:17,787 INFO L225 Difference]: With dead ends: 30 [2021-11-21 01:42:17,787 INFO L226 Difference]: Without dead ends: 22 [2021-11-21 01:42:17,788 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 36 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 3 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2021-11-21 01:42:17,789 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 7 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 3 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 01:42:17,789 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 154 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 3 Unchecked, 0.1s Time] [2021-11-21 01:42:17,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2021-11-21 01:42:17,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2021-11-21 01:42:17,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 18 states have internal predecessors, (21), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-21 01:42:17,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2021-11-21 01:42:17,794 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 24 [2021-11-21 01:42:17,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:42:17,794 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions. [2021-11-21 01:42:17,795 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.9166666666666667) internal successors, (23), 12 states have internal predecessors, (23), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-21 01:42:17,798 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2021-11-21 01:42:17,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-21 01:42:17,800 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:42:17,800 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:42:17,813 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f68dc34-3ee9-48eb-bf5b-3a312a486ae1/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-21 01:42:18,000 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f68dc34-3ee9-48eb-bf5b-3a312a486ae1/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 01:42:18,001 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:42:18,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:42:18,002 INFO L85 PathProgramCache]: Analyzing trace with hash 1550253923, now seen corresponding path program 1 times [2021-11-21 01:42:18,002 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:42:18,002 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [694141242] [2021-11-21 01:42:18,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:42:18,002 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:42:18,003 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f68dc34-3ee9-48eb-bf5b-3a312a486ae1/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:42:18,004 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f68dc34-3ee9-48eb-bf5b-3a312a486ae1/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:42:18,010 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f68dc34-3ee9-48eb-bf5b-3a312a486ae1/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-21 01:42:18,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:42:18,072 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-21 01:42:18,074 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:42:18,235 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 01:42:18,235 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:42:18,371 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-21 01:42:18,372 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:42:18,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [694141242] [2021-11-21 01:42:18,372 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [694141242] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 01:42:18,372 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:42:18,372 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2021-11-21 01:42:18,372 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46138849] [2021-11-21 01:42:18,373 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 01:42:18,373 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-21 01:42:18,373 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:42:18,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-21 01:42:18,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-11-21 01:42:18,374 INFO L87 Difference]: Start difference. First operand 22 states and 26 transitions. Second operand has 10 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-21 01:42:18,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:42:18,478 INFO L93 Difference]: Finished difference Result 22 states and 26 transitions. [2021-11-21 01:42:18,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 01:42:18,478 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 25 [2021-11-21 01:42:18,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:42:18,479 INFO L225 Difference]: With dead ends: 22 [2021-11-21 01:42:18,479 INFO L226 Difference]: Without dead ends: 0 [2021-11-21 01:42:18,480 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2021-11-21 01:42:18,481 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 2 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 3 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-21 01:42:18,482 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 108 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 3 Unchecked, 0.0s Time] [2021-11-21 01:42:18,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-21 01:42:18,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-21 01:42:18,483 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) [2021-11-21 01:42:18,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-21 01:42:18,483 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 25 [2021-11-21 01:42:18,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:42:18,483 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-21 01:42:18,484 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-21 01:42:18,484 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-21 01:42:18,484 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-21 01:42:18,487 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-21 01:42:18,502 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f68dc34-3ee9-48eb-bf5b-3a312a486ae1/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-21 01:42:18,697 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f68dc34-3ee9-48eb-bf5b-3a312a486ae1/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 01:42:18,699 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-11-21 01:42:18,751 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-11-21 01:42:18,752 INFO L854 garLoopResultBuilder]: At program point L56(line 56) the Hoare annotation is: (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res#1|) [2021-11-21 01:42:18,752 INFO L858 garLoopResultBuilder]: For program point L52(line 52) no Hoare annotation was computed. [2021-11-21 01:42:18,752 INFO L858 garLoopResultBuilder]: For program point L52-2(line 52) no Hoare annotation was computed. [2021-11-21 01:42:18,752 INFO L854 garLoopResultBuilder]: At program point L52-3(lines 44 53) the Hoare annotation is: (and (not (fp.eq |ULTIMATE.start_fmax_float_~y#1| |ULTIMATE.start_fmax_float_~y#1|)) (not (fp.eq |ULTIMATE.start_fmax_float_#res#1| |ULTIMATE.start_fmax_float_#res#1|))) [2021-11-21 01:42:18,752 INFO L861 garLoopResultBuilder]: At program point L71(lines 58 72) the Hoare annotation is: true [2021-11-21 01:42:18,753 INFO L858 garLoopResultBuilder]: For program point L67(line 67) no Hoare annotation was computed. [2021-11-21 01:42:18,753 INFO L858 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-11-21 01:42:18,753 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-11-21 01:42:18,753 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-11-21 01:42:18,753 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 67) no Hoare annotation was computed. [2021-11-21 01:42:18,754 INFO L854 garLoopResultBuilder]: At program point L49(line 49) the Hoare annotation is: (and (not (fp.eq |ULTIMATE.start_fmax_float_~x#1| |ULTIMATE.start_fmax_float_~x#1|)) (not (fp.eq |ULTIMATE.start_fmax_float_~y#1| |ULTIMATE.start_fmax_float_~y#1|))) [2021-11-21 01:42:18,754 INFO L858 garLoopResultBuilder]: For program point L49-1(lines 49 51) no Hoare annotation was computed. [2021-11-21 01:42:18,754 INFO L854 garLoopResultBuilder]: At program point L45(line 45) the Hoare annotation is: (and (not (fp.eq |ULTIMATE.start_fmax_float_~x#1| |ULTIMATE.start_fmax_float_~x#1|)) (not (fp.eq |ULTIMATE.start_fmax_float_~y#1| |ULTIMATE.start_fmax_float_~y#1|))) [2021-11-21 01:42:18,754 INFO L858 garLoopResultBuilder]: For program point L45-1(lines 45 47) no Hoare annotation was computed. [2021-11-21 01:42:18,754 INFO L858 garLoopResultBuilder]: For program point L66(lines 66 69) no Hoare annotation was computed. [2021-11-21 01:42:18,755 INFO L858 garLoopResultBuilder]: For program point __fpclassify_floatFINAL(lines 21 42) no Hoare annotation was computed. [2021-11-21 01:42:18,755 INFO L858 garLoopResultBuilder]: For program point L38(lines 38 41) no Hoare annotation was computed. [2021-11-21 01:42:18,755 INFO L858 garLoopResultBuilder]: For program point L32(lines 32 41) no Hoare annotation was computed. [2021-11-21 01:42:18,755 INFO L858 garLoopResultBuilder]: For program point L24-1(lines 24 28) no Hoare annotation was computed. [2021-11-21 01:42:18,755 INFO L861 garLoopResultBuilder]: At program point L24-2(lines 24 28) the Hoare annotation is: true [2021-11-21 01:42:18,756 INFO L858 garLoopResultBuilder]: For program point L24-3(lines 21 42) no Hoare annotation was computed. [2021-11-21 01:42:18,756 INFO L861 garLoopResultBuilder]: At program point __fpclassify_floatENTRY(lines 21 42) the Hoare annotation is: true [2021-11-21 01:42:18,756 INFO L858 garLoopResultBuilder]: For program point __fpclassify_floatEXIT(lines 21 42) no Hoare annotation was computed. [2021-11-21 01:42:18,756 INFO L858 garLoopResultBuilder]: For program point L35(lines 35 41) no Hoare annotation was computed. [2021-11-21 01:42:18,760 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2021-11-21 01:42:18,762 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-21 01:42:18,775 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.11 01:42:18 BoogieIcfgContainer [2021-11-21 01:42:18,775 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-21 01:42:18,776 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-21 01:42:18,776 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-21 01:42:18,776 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-21 01:42:18,777 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:42:14" (3/4) ... [2021-11-21 01:42:18,780 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-21 01:42:18,787 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __fpclassify_float [2021-11-21 01:42:18,792 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 18 nodes and edges [2021-11-21 01:42:18,793 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2021-11-21 01:42:18,793 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-11-21 01:42:18,793 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-21 01:42:18,820 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: !~fp.eq~FLOAT(y, y) && !~fp.eq~FLOAT(\result, \result) [2021-11-21 01:42:18,821 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: 1bv32 == \result [2021-11-21 01:42:18,832 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f68dc34-3ee9-48eb-bf5b-3a312a486ae1/bin/utaipan-TEXQjIfE4P/witness.graphml [2021-11-21 01:42:18,833 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-21 01:42:18,833 INFO L158 Benchmark]: Toolchain (without parser) took 5412.66ms. Allocated memory was 62.9MB in the beginning and 79.7MB in the end (delta: 16.8MB). Free memory was 42.6MB in the beginning and 32.8MB in the end (delta: 9.8MB). Peak memory consumption was 26.6MB. Max. memory is 16.1GB. [2021-11-21 01:42:18,834 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 62.9MB. Free memory was 43.9MB in the beginning and 43.8MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-21 01:42:18,834 INFO L158 Benchmark]: CACSL2BoogieTranslator took 286.71ms. Allocated memory is still 62.9MB. Free memory was 42.4MB in the beginning and 46.5MB in the end (delta: -4.1MB). Peak memory consumption was 13.8MB. Max. memory is 16.1GB. [2021-11-21 01:42:18,835 INFO L158 Benchmark]: Boogie Procedure Inliner took 74.09ms. Allocated memory is still 62.9MB. Free memory was 46.5MB in the beginning and 44.9MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-21 01:42:18,835 INFO L158 Benchmark]: Boogie Preprocessor took 50.07ms. Allocated memory is still 62.9MB. Free memory was 44.9MB in the beginning and 43.5MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-21 01:42:18,835 INFO L158 Benchmark]: RCFGBuilder took 346.65ms. Allocated memory is still 62.9MB. Free memory was 43.5MB in the beginning and 32.8MB in the end (delta: 10.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-21 01:42:18,836 INFO L158 Benchmark]: TraceAbstraction took 4590.76ms. Allocated memory was 62.9MB in the beginning and 79.7MB in the end (delta: 16.8MB). Free memory was 32.4MB in the beginning and 35.5MB in the end (delta: -3.1MB). Peak memory consumption was 17.0MB. Max. memory is 16.1GB. [2021-11-21 01:42:18,836 INFO L158 Benchmark]: Witness Printer took 56.90ms. Allocated memory is still 79.7MB. Free memory was 35.5MB in the beginning and 32.8MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-21 01:42:18,839 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 62.9MB. Free memory was 43.9MB in the beginning and 43.8MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 286.71ms. Allocated memory is still 62.9MB. Free memory was 42.4MB in the beginning and 46.5MB in the end (delta: -4.1MB). Peak memory consumption was 13.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 74.09ms. Allocated memory is still 62.9MB. Free memory was 46.5MB in the beginning and 44.9MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 50.07ms. Allocated memory is still 62.9MB. Free memory was 44.9MB in the beginning and 43.5MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 346.65ms. Allocated memory is still 62.9MB. Free memory was 43.5MB in the beginning and 32.8MB in the end (delta: 10.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 4590.76ms. Allocated memory was 62.9MB in the beginning and 79.7MB in the end (delta: 16.8MB). Free memory was 32.4MB in the beginning and 35.5MB in the end (delta: -3.1MB). Peak memory consumption was 17.0MB. Max. memory is 16.1GB. * Witness Printer took 56.90ms. Allocated memory is still 79.7MB. Free memory was 35.5MB in the beginning and 32.8MB in the end (delta: 2.7MB). 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: 67]: 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 2 procedures, 25 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 4.5s, OverallIterations: 6, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 17 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 16 mSDsluCounter, 644 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 7 IncrementalHoareTripleChecker+Unchecked, 490 mSDsCounter, 7 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 79 IncrementalHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 7 mSolverCounterUnsat, 154 mSDtfsCounter, 79 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 228 GetRequests, 184 SyntacticMatches, 4 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 7 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=25occurred in iteration=0, InterpolantAutomatonStates: 33, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 6 MinimizatonAttempts, 9 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 11 PreInvPairs, 21 NumberOfFragments, 33 HoareAnnotationTreeSize, 11 FomulaSimplifications, 20 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 32 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 115 NumberOfCodeBlocks, 115 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 218 ConstructedInterpolants, 15 QuantifiedInterpolants, 413 SizeOfPredicates, 30 NumberOfNonLiveVariables, 380 ConjunctsInSsa, 38 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 PerfectInterpolantSequences, 36/36 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: 56]: Loop Invariant Derived loop invariant: 1bv32 == \result - InvariantResult [Line: 44]: Loop Invariant Derived loop invariant: !~fp.eq~FLOAT(y, y) && !~fp.eq~FLOAT(\result, \result) - InvariantResult [Line: 58]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2021-11-21 01:42:18,895 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f68dc34-3ee9-48eb-bf5b-3a312a486ae1/bin/utaipan-TEXQjIfE4P/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