./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_0220b.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c911db27-27b2-4434-a356-39a2be0c644f/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c911db27-27b2-4434-a356-39a2be0c644f/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c911db27-27b2-4434-a356-39a2be0c644f/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c911db27-27b2-4434-a356-39a2be0c644f/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_0220b.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c911db27-27b2-4434-a356-39a2be0c644f/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c911db27-27b2-4434-a356-39a2be0c644f/bin/utaipan-vmNK8stdcF --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash eba0d69032dcca3a4fd537674be713f074cf8e41be9cc562a35b9ffa9def96ba --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 23:10:19,960 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 23:10:19,964 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 23:10:20,007 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 23:10:20,007 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 23:10:20,009 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 23:10:20,011 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 23:10:20,013 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 23:10:20,016 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 23:10:20,017 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 23:10:20,018 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 23:10:20,020 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 23:10:20,021 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 23:10:20,022 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 23:10:20,024 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 23:10:20,026 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 23:10:20,028 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 23:10:20,029 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 23:10:20,032 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 23:10:20,035 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 23:10:20,038 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 23:10:20,040 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 23:10:20,042 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 23:10:20,043 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 23:10:20,047 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 23:10:20,055 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 23:10:20,056 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 23:10:20,057 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 23:10:20,059 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 23:10:20,060 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 23:10:20,061 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 23:10:20,062 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 23:10:20,064 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 23:10:20,065 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 23:10:20,067 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 23:10:20,068 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 23:10:20,070 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 23:10:20,070 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 23:10:20,070 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 23:10:20,071 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 23:10:20,072 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 23:10:20,074 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c911db27-27b2-4434-a356-39a2be0c644f/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-12 23:10:20,129 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 23:10:20,129 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 23:10:20,131 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 23:10:20,131 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 23:10:20,131 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 23:10:20,132 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 23:10:20,132 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 23:10:20,132 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-12 23:10:20,132 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 23:10:20,133 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 23:10:20,134 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-12 23:10:20,134 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-12 23:10:20,134 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 23:10:20,135 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-12 23:10:20,135 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-12 23:10:20,135 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-12 23:10:20,136 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 23:10:20,136 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-12 23:10:20,136 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-12 23:10:20,137 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-12 23:10:20,137 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 23:10:20,137 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-12 23:10:20,137 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 23:10:20,138 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-12 23:10:20,138 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 23:10:20,138 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-12 23:10:20,138 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-12 23:10:20,139 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 23:10:20,139 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-12 23:10:20,140 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 23:10:20,141 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 23:10:20,141 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:10:20,141 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 23:10:20,142 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 23:10:20,142 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-12 23:10:20,142 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-12 23:10:20,142 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-12 23:10:20,143 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-12 23:10:20,143 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 23:10:20,143 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 23:10:20,143 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_c911db27-27b2-4434-a356-39a2be0c644f/bin/utaipan-vmNK8stdcF/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c911db27-27b2-4434-a356-39a2be0c644f/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> eba0d69032dcca3a4fd537674be713f074cf8e41be9cc562a35b9ffa9def96ba [2021-11-12 23:10:20,438 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 23:10:20,463 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 23:10:20,465 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 23:10:20,466 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 23:10:20,467 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 23:10:20,469 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c911db27-27b2-4434-a356-39a2be0c644f/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/float-newlib/float_req_bl_0220b.c [2021-11-12 23:10:20,549 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c911db27-27b2-4434-a356-39a2be0c644f/bin/utaipan-vmNK8stdcF/data/2726e781e/be076f7317464a31b0951a7b974bc467/FLAGd10dbcf04 [2021-11-12 23:10:21,149 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 23:10:21,151 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c911db27-27b2-4434-a356-39a2be0c644f/sv-benchmarks/c/float-newlib/float_req_bl_0220b.c [2021-11-12 23:10:21,171 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c911db27-27b2-4434-a356-39a2be0c644f/bin/utaipan-vmNK8stdcF/data/2726e781e/be076f7317464a31b0951a7b974bc467/FLAGd10dbcf04 [2021-11-12 23:10:21,413 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c911db27-27b2-4434-a356-39a2be0c644f/bin/utaipan-vmNK8stdcF/data/2726e781e/be076f7317464a31b0951a7b974bc467 [2021-11-12 23:10:21,415 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 23:10:21,416 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 23:10:21,426 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 23:10:21,427 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 23:10:21,430 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 23:10:21,431 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:10:21" (1/1) ... [2021-11-12 23:10:21,432 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61e0e8eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:10:21, skipping insertion in model container [2021-11-12 23:10:21,432 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:10:21" (1/1) ... [2021-11-12 23:10:21,439 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 23:10:21,479 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 23:10:21,817 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c911db27-27b2-4434-a356-39a2be0c644f/sv-benchmarks/c/float-newlib/float_req_bl_0220b.c[15845,15858] [2021-11-12 23:10:21,822 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:10:21,889 INFO L203 MainTranslator]: Completed pre-run [2021-11-12 23:10:22,008 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c911db27-27b2-4434-a356-39a2be0c644f/sv-benchmarks/c/float-newlib/float_req_bl_0220b.c[15845,15858] [2021-11-12 23:10:22,009 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:10:22,055 INFO L208 MainTranslator]: Completed translation [2021-11-12 23:10:22,056 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:10:22 WrapperNode [2021-11-12 23:10:22,056 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 23:10:22,057 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-12 23:10:22,058 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-12 23:10:22,058 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-12 23:10:22,066 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:10:22" (1/1) ... [2021-11-12 23:10:22,099 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:10:22" (1/1) ... [2021-11-12 23:10:22,195 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-12 23:10:22,196 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-12 23:10:22,196 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-12 23:10:22,196 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-12 23:10:22,212 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:10:22" (1/1) ... [2021-11-12 23:10:22,213 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:10:22" (1/1) ... [2021-11-12 23:10:22,228 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:10:22" (1/1) ... [2021-11-12 23:10:22,228 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:10:22" (1/1) ... [2021-11-12 23:10:22,305 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:10:22" (1/1) ... [2021-11-12 23:10:22,358 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:10:22" (1/1) ... [2021-11-12 23:10:22,363 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:10:22" (1/1) ... [2021-11-12 23:10:22,374 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-12 23:10:22,375 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-12 23:10:22,375 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-12 23:10:22,376 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-12 23:10:22,377 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:10:22" (1/1) ... [2021-11-12 23:10:22,404 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:10:22,420 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c911db27-27b2-4434-a356-39a2be0c644f/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 23:10:22,436 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c911db27-27b2-4434-a356-39a2be0c644f/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-12 23:10:22,469 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c911db27-27b2-4434-a356-39a2be0c644f/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-12 23:10:22,488 INFO L130 BoogieDeclarations]: Found specification of procedure __kernel_cosf [2021-11-12 23:10:22,490 INFO L138 BoogieDeclarations]: Found implementation of procedure __kernel_cosf [2021-11-12 23:10:22,490 INFO L130 BoogieDeclarations]: Found specification of procedure copysign_float [2021-11-12 23:10:22,491 INFO L138 BoogieDeclarations]: Found implementation of procedure copysign_float [2021-11-12 23:10:22,491 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-12 23:10:22,491 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-12 23:10:22,491 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-11-12 23:10:22,491 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-12 23:10:22,492 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-11-12 23:10:22,492 INFO L130 BoogieDeclarations]: Found specification of procedure __kernel_sinf [2021-11-12 23:10:22,492 INFO L138 BoogieDeclarations]: Found implementation of procedure __kernel_sinf [2021-11-12 23:10:22,492 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-12 23:10:22,493 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-12 23:10:22,493 INFO L130 BoogieDeclarations]: Found specification of procedure scalbn_float [2021-11-12 23:10:22,493 INFO L138 BoogieDeclarations]: Found implementation of procedure scalbn_float [2021-11-12 23:10:22,493 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-12 23:10:22,493 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2021-11-12 23:10:22,493 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-12 23:10:24,289 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-12 23:10:24,289 INFO L299 CfgBuilder]: Removed 61 assume(true) statements. [2021-11-12 23:10:24,292 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:10:24 BoogieIcfgContainer [2021-11-12 23:10:24,292 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-12 23:10:24,294 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-12 23:10:24,295 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-12 23:10:24,298 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-12 23:10:24,298 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 11:10:21" (1/3) ... [2021-11-12 23:10:24,299 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4af69a46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 11:10:24, skipping insertion in model container [2021-11-12 23:10:24,299 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:10:22" (2/3) ... [2021-11-12 23:10:24,300 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4af69a46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 11:10:24, skipping insertion in model container [2021-11-12 23:10:24,300 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:10:24" (3/3) ... [2021-11-12 23:10:24,301 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_0220b.c [2021-11-12 23:10:24,307 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-12 23:10:24,307 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-12 23:10:24,358 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-12 23:10:24,365 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-12 23:10:24,366 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-12 23:10:24,389 INFO L276 IsEmpty]: Start isEmpty. Operand has 172 states, 154 states have (on average 1.6818181818181819) internal successors, (259), 155 states have internal predecessors, (259), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2021-11-12 23:10:24,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-12 23:10:24,394 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:10:24,395 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:10:24,395 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:10:24,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:10:24,401 INFO L85 PathProgramCache]: Analyzing trace with hash 378648010, now seen corresponding path program 1 times [2021-11-12 23:10:24,411 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:10:24,411 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569025247] [2021-11-12 23:10:24,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:10:24,413 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:10:24,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:10:24,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:10:24,759 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:10:24,759 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569025247] [2021-11-12 23:10:24,760 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [569025247] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:10:24,761 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:10:24,761 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-12 23:10:24,763 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737917946] [2021-11-12 23:10:24,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:10:24,768 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-12 23:10:24,768 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:10:24,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-12 23:10:24,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-12 23:10:24,799 INFO L87 Difference]: Start difference. First operand has 172 states, 154 states have (on average 1.6818181818181819) internal successors, (259), 155 states have internal predecessors, (259), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:10:24,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:10:24,969 INFO L93 Difference]: Finished difference Result 343 states and 577 transitions. [2021-11-12 23:10:24,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-12 23:10:24,972 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-11-12 23:10:24,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:10:24,982 INFO L225 Difference]: With dead ends: 343 [2021-11-12 23:10:24,983 INFO L226 Difference]: Without dead ends: 170 [2021-11-12 23:10:24,989 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-12 23:10:24,993 INFO L933 BasicCegarLoop]: 187 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 95.95ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 187 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.90ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 115.49ms IncrementalHoareTripleChecker+Time [2021-11-12 23:10:24,994 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 187 Invalid, 52 Unknown, 0 Unchecked, 2.90ms Time], IncrementalHoareTripleChecker [0 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 115.49ms Time] [2021-11-12 23:10:25,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2021-11-12 23:10:25,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 170. [2021-11-12 23:10:25,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 153 states have (on average 1.392156862745098) internal successors, (213), 153 states have internal predecessors, (213), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2021-11-12 23:10:25,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 237 transitions. [2021-11-12 23:10:25,050 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 237 transitions. Word has length 9 [2021-11-12 23:10:25,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:10:25,050 INFO L470 AbstractCegarLoop]: Abstraction has 170 states and 237 transitions. [2021-11-12 23:10:25,051 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:10:25,051 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 237 transitions. [2021-11-12 23:10:25,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-12 23:10:25,052 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:10:25,052 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:10:25,052 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-12 23:10:25,053 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:10:25,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:10:25,053 INFO L85 PathProgramCache]: Analyzing trace with hash 127877254, now seen corresponding path program 1 times [2021-11-12 23:10:25,054 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:10:25,054 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214261738] [2021-11-12 23:10:25,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:10:25,055 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:10:25,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-12 23:10:25,234 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-12 23:10:25,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-12 23:10:25,431 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-12 23:10:25,431 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-12 23:10:25,433 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-12 23:10:25,435 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-12 23:10:25,442 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2021-11-12 23:10:25,445 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-12 23:10:25,545 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 11:10:25 BoogieIcfgContainer [2021-11-12 23:10:25,545 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-12 23:10:25,546 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-12 23:10:25,546 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-12 23:10:25,546 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-12 23:10:25,546 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:10:24" (3/4) ... [2021-11-12 23:10:25,549 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-12 23:10:25,549 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-12 23:10:25,553 INFO L158 Benchmark]: Toolchain (without parser) took 4136.88ms. Allocated memory was 92.3MB in the beginning and 159.4MB in the end (delta: 67.1MB). Free memory was 55.4MB in the beginning and 121.9MB in the end (delta: -66.4MB). Peak memory consumption was 293.8kB. Max. memory is 16.1GB. [2021-11-12 23:10:25,555 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 92.3MB. Free memory was 64.0MB in the beginning and 64.0MB in the end (delta: 23.7kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 23:10:25,560 INFO L158 Benchmark]: CACSL2BoogieTranslator took 630.08ms. Allocated memory is still 92.3MB. Free memory was 55.3MB in the beginning and 47.7MB in the end (delta: 7.6MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-11-12 23:10:25,561 INFO L158 Benchmark]: Boogie Procedure Inliner took 138.08ms. Allocated memory is still 92.3MB. Free memory was 47.7MB in the beginning and 40.4MB in the end (delta: 7.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-11-12 23:10:25,563 INFO L158 Benchmark]: Boogie Preprocessor took 178.27ms. Allocated memory was 92.3MB in the beginning and 111.1MB in the end (delta: 18.9MB). Free memory was 40.4MB in the beginning and 83.4MB in the end (delta: -43.0MB). Peak memory consumption was 15.4MB. Max. memory is 16.1GB. [2021-11-12 23:10:25,565 INFO L158 Benchmark]: RCFGBuilder took 1917.37ms. Allocated memory was 111.1MB in the beginning and 159.4MB in the end (delta: 48.2MB). Free memory was 83.4MB in the beginning and 92.0MB in the end (delta: -8.6MB). Peak memory consumption was 44.6MB. Max. memory is 16.1GB. [2021-11-12 23:10:25,565 INFO L158 Benchmark]: TraceAbstraction took 1250.66ms. Allocated memory is still 159.4MB. Free memory was 91.0MB in the beginning and 121.9MB in the end (delta: -30.9MB). Peak memory consumption was 32.9MB. Max. memory is 16.1GB. [2021-11-12 23:10:25,566 INFO L158 Benchmark]: Witness Printer took 3.89ms. Allocated memory is still 159.4MB. Free memory is still 121.9MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 23:10:25,571 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 92.3MB. Free memory was 64.0MB in the beginning and 64.0MB in the end (delta: 23.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 630.08ms. Allocated memory is still 92.3MB. Free memory was 55.3MB in the beginning and 47.7MB in the end (delta: 7.6MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 138.08ms. Allocated memory is still 92.3MB. Free memory was 47.7MB in the beginning and 40.4MB in the end (delta: 7.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 178.27ms. Allocated memory was 92.3MB in the beginning and 111.1MB in the end (delta: 18.9MB). Free memory was 40.4MB in the beginning and 83.4MB in the end (delta: -43.0MB). Peak memory consumption was 15.4MB. Max. memory is 16.1GB. * RCFGBuilder took 1917.37ms. Allocated memory was 111.1MB in the beginning and 159.4MB in the end (delta: 48.2MB). Free memory was 83.4MB in the beginning and 92.0MB in the end (delta: -8.6MB). Peak memory consumption was 44.6MB. Max. memory is 16.1GB. * TraceAbstraction took 1250.66ms. Allocated memory is still 159.4MB. Free memory was 91.0MB in the beginning and 121.9MB in the end (delta: -30.9MB). Peak memory consumption was 32.9MB. Max. memory is 16.1GB. * Witness Printer took 3.89ms. Allocated memory is still 159.4MB. Free memory is still 121.9MB. 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: 629]: 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 628, overapproximation of someUnaryDOUBLEoperation at line 507, overapproximation of bitwiseAnd at line 594, overapproximation of someUnaryFLOAToperation at line 624, overapproximation of someBinaryArithmeticFLOAToperation at line 599. Possible FailurePath: [L13] static const float huge_floor = 1.0e30; [L90-L92] static const float two25_scalbn = 3.355443200e+07, twom25_scalbn = 2.9802322388e-08, huge_scalbn = 1.0e+30, tiny_scalbn = 1.0e-30; [L165] static const int init_jk_krempio[] = {4, 7, 9}; [L167-L171] static const float PIo2_krempio[] = { 1.5703125000e+00, 4.5776367188e-04, 2.5987625122e-05, 7.5437128544e-08, 6.0026650317e-11, 7.3896444519e-13, 5.3845816694e-15, 5.6378512969e-18, 8.3009228831e-20, 3.2756352257e-22, 6.3331015649e-25, }; [L173-L175] static const float zero_krempio = 0.0, one_krempio = 1.0, two8_krempio = 2.5600000000e+02, twon8_krempio = 3.9062500000e-03; [L350-L368] static const __int32_t two_over_pi_rempio[] = { 0xA2, 0xF9, 0x83, 0x6E, 0x4E, 0x44, 0x15, 0x29, 0xFC, 0x27, 0x57, 0xD1, 0xF5, 0x34, 0xDD, 0xC0, 0xDB, 0x62, 0x95, 0x99, 0x3C, 0x43, 0x90, 0x41, 0xFE, 0x51, 0x63, 0xAB, 0xDE, 0xBB, 0xC5, 0x61, 0xB7, 0x24, 0x6E, 0x3A, 0x42, 0x4D, 0xD2, 0xE0, 0x06, 0x49, 0x2E, 0xEA, 0x09, 0xD1, 0x92, 0x1C, 0xFE, 0x1D, 0xEB, 0x1C, 0xB1, 0x29, 0xA7, 0x3E, 0xE8, 0x82, 0x35, 0xF5, 0x2E, 0xBB, 0x44, 0x84, 0xE9, 0x9C, 0x70, 0x26, 0xB4, 0x5F, 0x7E, 0x41, 0x39, 0x91, 0xD6, 0x39, 0x83, 0x53, 0x39, 0xF4, 0x9C, 0x84, 0x5F, 0x8B, 0xBD, 0xF9, 0x28, 0x3B, 0x1F, 0xF8, 0x97, 0xFF, 0xDE, 0x05, 0x98, 0x0F, 0xEF, 0x2F, 0x11, 0x8B, 0x5A, 0x0A, 0x6D, 0x1F, 0x6D, 0x36, 0x7E, 0xCF, 0x27, 0xCB, 0x09, 0xB7, 0x4F, 0x46, 0x3F, 0x66, 0x9E, 0x5F, 0xEA, 0x2D, 0x75, 0x27, 0xBA, 0xC7, 0xEB, 0xE5, 0xF1, 0x7B, 0x3D, 0x07, 0x39, 0xF7, 0x8A, 0x52, 0x92, 0xEA, 0x6B, 0xFB, 0x5F, 0xB1, 0x1F, 0x8D, 0x5D, 0x08, 0x56, 0x03, 0x30, 0x46, 0xFC, 0x7B, 0x6B, 0xAB, 0xF0, 0xCF, 0xBC, 0x20, 0x9A, 0xF4, 0x36, 0x1D, 0xA9, 0xE3, 0x91, 0x61, 0x5E, 0xE6, 0x1B, 0x08, 0x65, 0x99, 0x85, 0x5F, 0x14, 0xA0, 0x68, 0x40, 0x8D, 0xFF, 0xD8, 0x80, 0x4D, 0x73, 0x27, 0x31, 0x06, 0x06, 0x15, 0x56, 0xCA, 0x73, 0xA8, 0xC9, 0x60, 0xE2, 0x7B, 0xC0, 0x8C, 0x6B, }; [L370-L376] static const __int32_t npio2_hw_rempio[] = { 0x3fc90f00, 0x40490f00, 0x4096cb00, 0x40c90f00, 0x40fb5300, 0x4116cb00, 0x412fed00, 0x41490f00, 0x41623100, 0x417b5300, 0x418a3a00, 0x4196cb00, 0x41a35c00, 0x41afed00, 0x41bc7e00, 0x41c90f00, 0x41d5a000, 0x41e23100, 0x41eec200, 0x41fb5300, 0x4203f200, 0x420a3a00, 0x42108300, 0x4216cb00, 0x421d1400, 0x42235c00, 0x4229a500, 0x422fed00, 0x42363600, 0x423c7e00, 0x4242c700, 0x42490f00}; [L378-L387] static const float zero_rempio = 0.0000000000e+00, half_rempio = 5.0000000000e-01, two8_rempio = 2.5600000000e+02, invpio2_rempio = 6.3661980629e-01, pio2_1_rempio = 1.5707855225e+00, pio2_1t_rempio = 1.0804334124e-05, pio2_2_rempio = 1.0804273188e-05, pio2_2t_rempio = 6.0770999344e-11, pio2_3_rempio = 6.0770943833e-11, pio2_3t_rempio = 6.1232342629e-17; [L507-L510] static const float half_ksin = 5.0000000000e-01, S1_ksin = -1.6666667163e-01, S2_ksin = 8.3333337680e-03, S3_ksin = -1.9841270114e-04, S4_ksin = 2.7557314297e-06, S5_ksin = -2.5050759689e-08, S6_ksin = 1.5896910177e-10; [L534-L537] static const float one_kcos = 1.0000000000e+00, C1_kcos = 4.1666667908e-02, C2_kcos = -1.3888889225e-03, C3_kcos = 2.4801587642e-05, C4_kcos = -2.7557314297e-07, C5_kcos = 2.0875723372e-09, C6_kcos = -1.1359647598e-11; [L574-L582] static const float one_ktan = 1.0000000000e+00, pio4_ktan = 7.8539812565e-01, pio4lo_ktan = 3.7748947079e-08, T_ktan[] = { 3.3333334327e-01, 1.3333334029e-01, 5.3968254477e-02, 2.1869488060e-02, 8.8632395491e-03, 3.5920790397e-03, 1.4562094584e-03, 5.8804126456e-04, 2.4646313977e-04, 7.8179444245e-05, 7.1407252108e-05, -1.8558637748e-05, 2.5907305826e-05, }; [L624] float x = -0.0f; [L625] CALL, EXPR sin_float(x) [L585] float y[2], z = 0.0; [L586] __int32_t n, ix; VAL [\old(x)=1000000000000000000000000000003, C1_kcos=10416666977/250000000000, C3_kcos=12400793821/500000000000000, C5_kcos=5218930843/2500000000000000000, half_ksin=1/2, half_rempio=1/2, huge_floor=1000000000000000000000000000000, huge_scalbn=1000000000000000000000000000000, init_jk_krempio={18:0}, invpio2_rempio=63661980629/100000000000, npio2_hw_rempio={19:0}, one_kcos=1, one_krempio=1, one_ktan=1, pio2_1_rempio=628314209/400000000, pio2_1t_rempio=2701083531/250000000000000, pio2_2_rempio=2701068297/250000000000000, pio2_2t_rempio=3798187459/62500000000000000000, pio2_3_rempio=60770943833/1000000000000000000000, pio2_3t_rempio=61232342629/1000000000000000000000000000, PIo2_krempio={30:0}, pio4_ktan=15707962513/20000000000, pio4lo_ktan=37748947079/1000000000000000000, S2_ksin=1041666721/125000000000, S4_ksin=27557314297/10000000000000000, S6_ksin=15896910177/100000000000000000000, tiny_scalbn=1/1000000000000000000000000000000, two25_scalbn=33554432, two8_krempio=256, two8_rempio=256, two_over_pi_rempio={25:0}, twom25_scalbn=7450580597/250000000000000000, twon8_krempio=1/256, x=1000000000000000000000000000003, y={26:0}, z=0, zero_krempio=0, zero_rempio=0] [L589] ieee_float_shape_type gf_u; [L590] gf_u.value = (x) [L591] EXPR gf_u.word [L591] (ix) = gf_u.word [L594] ix &= 0x7fffffff VAL [\old(x)=1000000000000000000000000000003, C1_kcos=10416666977/250000000000, C3_kcos=12400793821/500000000000000, C5_kcos=5218930843/2500000000000000000, half_ksin=1/2, half_rempio=1/2, huge_floor=1000000000000000000000000000000, huge_scalbn=1000000000000000000000000000000, init_jk_krempio={18:0}, invpio2_rempio=63661980629/100000000000, npio2_hw_rempio={19:0}, one_kcos=1, one_krempio=1, one_ktan=1, pio2_1_rempio=628314209/400000000, pio2_1t_rempio=2701083531/250000000000000, pio2_2_rempio=2701068297/250000000000000, pio2_2t_rempio=3798187459/62500000000000000000, pio2_3_rempio=60770943833/1000000000000000000000, pio2_3t_rempio=61232342629/1000000000000000000000000000, PIo2_krempio={30:0}, pio4_ktan=15707962513/20000000000, pio4lo_ktan=37748947079/1000000000000000000, S2_ksin=1041666721/125000000000, S4_ksin=27557314297/10000000000000000, S6_ksin=15896910177/100000000000000000000, tiny_scalbn=1/1000000000000000000000000000000, two25_scalbn=33554432, two8_krempio=256, two8_rempio=256, two_over_pi_rempio={25:0}, twom25_scalbn=7450580597/250000000000000000, twon8_krempio=1/256, x=1000000000000000000000000000003, y={26:0}, z=0, zero_krempio=0, zero_rempio=0] [L595] COND FALSE !(ix <= 0x3f490fd8) VAL [\old(x)=1000000000000000000000000000003, C1_kcos=10416666977/250000000000, C3_kcos=12400793821/500000000000000, C5_kcos=5218930843/2500000000000000000, half_ksin=1/2, half_rempio=1/2, huge_floor=1000000000000000000000000000000, huge_scalbn=1000000000000000000000000000000, init_jk_krempio={18:0}, invpio2_rempio=63661980629/100000000000, ix=2139095040, npio2_hw_rempio={19:0}, one_kcos=1, one_krempio=1, one_ktan=1, pio2_1_rempio=628314209/400000000, pio2_1t_rempio=2701083531/250000000000000, pio2_2_rempio=2701068297/250000000000000, pio2_2t_rempio=3798187459/62500000000000000000, pio2_3_rempio=60770943833/1000000000000000000000, pio2_3t_rempio=61232342629/1000000000000000000000000000, PIo2_krempio={30:0}, pio4_ktan=15707962513/20000000000, pio4lo_ktan=37748947079/1000000000000000000, S2_ksin=1041666721/125000000000, S4_ksin=27557314297/10000000000000000, S6_ksin=15896910177/100000000000000000000, tiny_scalbn=1/1000000000000000000000000000000, two25_scalbn=33554432, two8_krempio=256, two8_rempio=256, two_over_pi_rempio={25:0}, twom25_scalbn=7450580597/250000000000000000, twon8_krempio=1/256, x=1000000000000000000000000000003, y={26:0}, z=0, zero_krempio=0, zero_rempio=0] [L598] COND TRUE !((ix) < 0x7f800000L) [L599] return x - x; [L599] return x - x; VAL [\old(x)=1000000000000000000000000000003, C1_kcos=10416666977/250000000000, C3_kcos=12400793821/500000000000000, C5_kcos=5218930843/2500000000000000000, half_ksin=1/2, half_rempio=1/2, huge_floor=1000000000000000000000000000000, huge_scalbn=1000000000000000000000000000000, init_jk_krempio={18:0}, invpio2_rempio=63661980629/100000000000, ix=2139095040, npio2_hw_rempio={19:0}, one_kcos=1, one_krempio=1, one_ktan=1, pio2_1_rempio=628314209/400000000, pio2_1t_rempio=2701083531/250000000000000, pio2_2_rempio=2701068297/250000000000000, pio2_2t_rempio=3798187459/62500000000000000000, pio2_3_rempio=60770943833/1000000000000000000000, pio2_3t_rempio=61232342629/1000000000000000000000000000, PIo2_krempio={30:0}, pio4_ktan=15707962513/20000000000, pio4lo_ktan=37748947079/1000000000000000000, S2_ksin=1041666721/125000000000, S4_ksin=27557314297/10000000000000000, S6_ksin=15896910177/100000000000000000000, tiny_scalbn=1/1000000000000000000000000000000, two25_scalbn=33554432, two8_krempio=256, two8_rempio=256, two_over_pi_rempio={25:0}, twom25_scalbn=7450580597/250000000000000000, twon8_krempio=1/256, x=1000000000000000000000000000003, z=0, zero_krempio=0, zero_rempio=0] [L625] RET, EXPR sin_float(x) [L625] float res = sin_float(x); [L628] EXPR res == -0.0f && __signbit_float(res) == 1 VAL [C1_kcos=10416666977/250000000000, C3_kcos=12400793821/500000000000000, C5_kcos=5218930843/2500000000000000000, half_ksin=1/2, half_rempio=1/2, huge_floor=1000000000000000000000000000000, huge_scalbn=1000000000000000000000000000000, init_jk_krempio={18:0}, invpio2_rempio=63661980629/100000000000, npio2_hw_rempio={19:0}, one_kcos=1, one_krempio=1, one_ktan=1, pio2_1_rempio=628314209/400000000, pio2_1t_rempio=2701083531/250000000000000, pio2_2_rempio=2701068297/250000000000000, pio2_2t_rempio=3798187459/62500000000000000000, pio2_3_rempio=60770943833/1000000000000000000000, pio2_3t_rempio=61232342629/1000000000000000000000000000, PIo2_krempio={30:0}, pio4_ktan=15707962513/20000000000, pio4lo_ktan=37748947079/1000000000000000000, res=1000000000000000000000000000002, res == -0.0f && __signbit_float(res) == 1=0, S2_ksin=1041666721/125000000000, S4_ksin=27557314297/10000000000000000, S6_ksin=15896910177/100000000000000000000, tiny_scalbn=1/1000000000000000000000000000000, two25_scalbn=33554432, two8_krempio=256, two8_rempio=256, two_over_pi_rempio={25:0}, twom25_scalbn=7450580597/250000000000000000, twon8_krempio=1/256, x=1000000000000000000000000000003, zero_krempio=0, zero_rempio=0] [L628] COND TRUE !(res == -0.0f && __signbit_float(res) == 1) [L629] reach_error() VAL [C1_kcos=10416666977/250000000000, C3_kcos=12400793821/500000000000000, C5_kcos=5218930843/2500000000000000000, half_ksin=1/2, half_rempio=1/2, huge_floor=1000000000000000000000000000000, huge_scalbn=1000000000000000000000000000000, init_jk_krempio={18:0}, invpio2_rempio=63661980629/100000000000, npio2_hw_rempio={19:0}, one_kcos=1, one_krempio=1, one_ktan=1, pio2_1_rempio=628314209/400000000, pio2_1t_rempio=2701083531/250000000000000, pio2_2_rempio=2701068297/250000000000000, pio2_2t_rempio=3798187459/62500000000000000000, pio2_3_rempio=60770943833/1000000000000000000000, pio2_3t_rempio=61232342629/1000000000000000000000000000, PIo2_krempio={30:0}, pio4_ktan=15707962513/20000000000, pio4lo_ktan=37748947079/1000000000000000000, res=1000000000000000000000000000002, S2_ksin=1041666721/125000000000, S4_ksin=27557314297/10000000000000000, S6_ksin=15896910177/100000000000000000000, tiny_scalbn=1/1000000000000000000000000000000, two25_scalbn=33554432, two8_krempio=256, two8_rempio=256, two_over_pi_rempio={25:0}, twom25_scalbn=7450580597/250000000000000000, twon8_krempio=1/256, x=1000000000000000000000000000003, zero_krempio=0, zero_rempio=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 172 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.1s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 115.49ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 187 SdHoareTripleChecker+Invalid, 95.95ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 52 IncrementalHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 187 mSDtfsCounter, 52 mSolverCounterSat, 2.90ms 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=172occurred 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, 0.3s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 19 NumberOfCodeBlocks, 19 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 8 ConstructedInterpolants, 0 QuantifiedInterpolants, 8 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-11-12 23:10:25,635 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c911db27-27b2-4434-a356-39a2be0c644f/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c911db27-27b2-4434-a356-39a2be0c644f/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c911db27-27b2-4434-a356-39a2be0c644f/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c911db27-27b2-4434-a356-39a2be0c644f/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c911db27-27b2-4434-a356-39a2be0c644f/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_0220b.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c911db27-27b2-4434-a356-39a2be0c644f/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c911db27-27b2-4434-a356-39a2be0c644f/bin/utaipan-vmNK8stdcF --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash eba0d69032dcca3a4fd537674be713f074cf8e41be9cc562a35b9ffa9def96ba --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 23:10:28,092 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 23:10:28,095 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 23:10:28,152 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 23:10:28,152 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 23:10:28,156 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 23:10:28,158 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 23:10:28,163 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 23:10:28,170 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 23:10:28,171 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 23:10:28,172 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 23:10:28,174 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 23:10:28,175 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 23:10:28,177 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 23:10:28,180 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 23:10:28,184 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 23:10:28,186 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 23:10:28,188 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 23:10:28,193 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 23:10:28,200 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 23:10:28,203 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 23:10:28,204 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 23:10:28,208 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 23:10:28,209 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 23:10:28,219 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 23:10:28,220 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 23:10:28,220 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 23:10:28,222 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 23:10:28,223 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 23:10:28,224 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 23:10:28,225 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 23:10:28,226 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 23:10:28,228 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 23:10:28,229 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 23:10:28,231 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 23:10:28,231 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 23:10:28,232 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 23:10:28,232 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 23:10:28,233 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 23:10:28,235 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 23:10:28,236 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 23:10:28,241 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c911db27-27b2-4434-a356-39a2be0c644f/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-12 23:10:28,271 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 23:10:28,272 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 23:10:28,274 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 23:10:28,274 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 23:10:28,275 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 23:10:28,275 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 23:10:28,275 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 23:10:28,275 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 23:10:28,276 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 23:10:28,276 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 23:10:28,278 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 23:10:28,279 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-12 23:10:28,279 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-12 23:10:28,279 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 23:10:28,280 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-12 23:10:28,280 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 23:10:28,280 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-12 23:10:28,281 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 23:10:28,281 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-12 23:10:28,281 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-12 23:10:28,281 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-12 23:10:28,282 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-12 23:10:28,282 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 23:10:28,282 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-12 23:10:28,283 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 23:10:28,283 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-12 23:10:28,283 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 23:10:28,283 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:10:28,284 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 23:10:28,284 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 23:10:28,284 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-12 23:10:28,285 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-12 23:10:28,285 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-12 23:10:28,285 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-12 23:10:28,286 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 23:10:28,286 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 23:10:28,286 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_c911db27-27b2-4434-a356-39a2be0c644f/bin/utaipan-vmNK8stdcF/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c911db27-27b2-4434-a356-39a2be0c644f/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> eba0d69032dcca3a4fd537674be713f074cf8e41be9cc562a35b9ffa9def96ba [2021-11-12 23:10:28,734 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 23:10:28,766 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 23:10:28,769 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 23:10:28,770 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 23:10:28,773 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 23:10:28,774 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c911db27-27b2-4434-a356-39a2be0c644f/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/float-newlib/float_req_bl_0220b.c [2021-11-12 23:10:28,853 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c911db27-27b2-4434-a356-39a2be0c644f/bin/utaipan-vmNK8stdcF/data/da4974330/357630fb02464706baee3c6caf708972/FLAGfac986ab9 [2021-11-12 23:10:29,410 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 23:10:29,411 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c911db27-27b2-4434-a356-39a2be0c644f/sv-benchmarks/c/float-newlib/float_req_bl_0220b.c [2021-11-12 23:10:29,423 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c911db27-27b2-4434-a356-39a2be0c644f/bin/utaipan-vmNK8stdcF/data/da4974330/357630fb02464706baee3c6caf708972/FLAGfac986ab9 [2021-11-12 23:10:29,751 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c911db27-27b2-4434-a356-39a2be0c644f/bin/utaipan-vmNK8stdcF/data/da4974330/357630fb02464706baee3c6caf708972 [2021-11-12 23:10:29,754 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 23:10:29,756 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 23:10:29,760 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 23:10:29,760 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 23:10:29,764 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 23:10:29,765 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:10:29" (1/1) ... [2021-11-12 23:10:29,766 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c2c0dae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:10:29, skipping insertion in model container [2021-11-12 23:10:29,767 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:10:29" (1/1) ... [2021-11-12 23:10:29,774 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 23:10:29,834 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 23:10:30,251 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c911db27-27b2-4434-a356-39a2be0c644f/sv-benchmarks/c/float-newlib/float_req_bl_0220b.c[15845,15858] [2021-11-12 23:10:30,254 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:10:30,309 INFO L203 MainTranslator]: Completed pre-run [2021-11-12 23:10:30,470 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c911db27-27b2-4434-a356-39a2be0c644f/sv-benchmarks/c/float-newlib/float_req_bl_0220b.c[15845,15858] [2021-11-12 23:10:30,471 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:10:30,523 INFO L208 MainTranslator]: Completed translation [2021-11-12 23:10:30,523 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:10:30 WrapperNode [2021-11-12 23:10:30,524 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 23:10:30,525 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-12 23:10:30,525 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-12 23:10:30,525 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-12 23:10:30,533 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:10:30" (1/1) ... [2021-11-12 23:10:30,573 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:10:30" (1/1) ... [2021-11-12 23:10:30,669 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-12 23:10:30,670 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-12 23:10:30,670 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-12 23:10:30,670 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-12 23:10:30,679 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:10:30" (1/1) ... [2021-11-12 23:10:30,679 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:10:30" (1/1) ... [2021-11-12 23:10:30,699 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:10:30" (1/1) ... [2021-11-12 23:10:30,699 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:10:30" (1/1) ... [2021-11-12 23:10:30,801 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:10:30" (1/1) ... [2021-11-12 23:10:30,846 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:10:30" (1/1) ... [2021-11-12 23:10:30,866 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:10:30" (1/1) ... [2021-11-12 23:10:30,879 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-12 23:10:30,880 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-12 23:10:30,881 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-12 23:10:30,881 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-12 23:10:30,890 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:10:30" (1/1) ... [2021-11-12 23:10:30,899 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:10:30,925 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c911db27-27b2-4434-a356-39a2be0c644f/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 23:10:30,939 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c911db27-27b2-4434-a356-39a2be0c644f/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-12 23:10:30,970 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c911db27-27b2-4434-a356-39a2be0c644f/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-12 23:10:30,989 INFO L130 BoogieDeclarations]: Found specification of procedure __kernel_cosf [2021-11-12 23:10:30,989 INFO L138 BoogieDeclarations]: Found implementation of procedure __kernel_cosf [2021-11-12 23:10:30,989 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-12 23:10:30,989 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-12 23:10:30,989 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-12 23:10:30,989 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2021-11-12 23:10:30,990 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-12 23:10:30,990 INFO L130 BoogieDeclarations]: Found specification of procedure __kernel_sinf [2021-11-12 23:10:30,990 INFO L138 BoogieDeclarations]: Found implementation of procedure __kernel_sinf [2021-11-12 23:10:30,990 INFO L130 BoogieDeclarations]: Found specification of procedure scalbn_float [2021-11-12 23:10:30,990 INFO L138 BoogieDeclarations]: Found implementation of procedure scalbn_float [2021-11-12 23:10:30,990 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2021-11-12 23:10:30,991 INFO L130 BoogieDeclarations]: Found specification of procedure copysign_float [2021-11-12 23:10:30,991 INFO L138 BoogieDeclarations]: Found implementation of procedure copysign_float [2021-11-12 23:10:30,991 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4 [2021-11-12 23:10:30,991 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-12 23:10:30,991 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-12 23:10:30,991 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-12 23:10:30,992 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-12 23:11:04,039 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-12 23:11:04,039 INFO L299 CfgBuilder]: Removed 61 assume(true) statements. [2021-11-12 23:11:04,042 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:11:04 BoogieIcfgContainer [2021-11-12 23:11:04,042 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-12 23:11:04,045 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-12 23:11:04,045 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-12 23:11:04,048 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-12 23:11:04,048 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 11:10:29" (1/3) ... [2021-11-12 23:11:04,049 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@764c7bc5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 11:11:04, skipping insertion in model container [2021-11-12 23:11:04,049 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:10:30" (2/3) ... [2021-11-12 23:11:04,050 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@764c7bc5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 11:11:04, skipping insertion in model container [2021-11-12 23:11:04,050 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:11:04" (3/3) ... [2021-11-12 23:11:04,052 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_0220b.c [2021-11-12 23:11:04,058 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-12 23:11:04,058 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-12 23:11:04,114 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-12 23:11:04,122 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-12 23:11:04,122 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-12 23:11:04,147 INFO L276 IsEmpty]: Start isEmpty. Operand has 249 states, 231 states have (on average 1.6623376623376624) internal successors, (384), 232 states have internal predecessors, (384), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2021-11-12 23:11:04,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-12 23:11:04,153 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:11:04,153 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:11:04,154 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:11:04,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:11:04,160 INFO L85 PathProgramCache]: Analyzing trace with hash -709361443, now seen corresponding path program 1 times [2021-11-12 23:11:04,174 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:11:04,175 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [368402994] [2021-11-12 23:11:04,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:11:04,176 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:11:04,176 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c911db27-27b2-4434-a356-39a2be0c644f/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:11:04,177 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c911db27-27b2-4434-a356-39a2be0c644f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:11:04,182 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c911db27-27b2-4434-a356-39a2be0c644f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-12 23:11:06,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:11:06,195 INFO L263 TraceCheckSpWp]: Trace formula consists of 351 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-12 23:11:06,199 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:11:06,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:11:06,316 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:11:06,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:11:06,384 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:11:06,384 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [368402994] [2021-11-12 23:11:06,385 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [368402994] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:11:06,385 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:11:06,385 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-12 23:11:06,387 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583360958] [2021-11-12 23:11:06,388 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:11:06,393 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-12 23:11:06,393 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:11:06,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-12 23:11:06,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-12 23:11:06,457 INFO L87 Difference]: Start difference. First operand has 249 states, 231 states have (on average 1.6623376623376624) internal successors, (384), 232 states have internal predecessors, (384), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:11:06,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:11:06,530 INFO L93 Difference]: Finished difference Result 496 states and 826 transitions. [2021-11-12 23:11:06,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-12 23:11:06,532 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-11-12 23:11:06,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:11:06,544 INFO L225 Difference]: With dead ends: 496 [2021-11-12 23:11:06,545 INFO L226 Difference]: Without dead ends: 246 [2021-11-12 23:11:06,551 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-12 23:11:06,555 INFO L933 BasicCegarLoop]: 346 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 346 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.51ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-12 23:11:06,557 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 346 Invalid, 0 Unknown, 0 Unchecked, 4.51ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-12 23:11:06,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2021-11-12 23:11:06,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 246. [2021-11-12 23:11:06,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 229 states have (on average 1.3930131004366813) internal successors, (319), 229 states have internal predecessors, (319), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2021-11-12 23:11:06,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 343 transitions. [2021-11-12 23:11:06,639 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 343 transitions. Word has length 10 [2021-11-12 23:11:06,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:11:06,639 INFO L470 AbstractCegarLoop]: Abstraction has 246 states and 343 transitions. [2021-11-12 23:11:06,640 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:11:06,640 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 343 transitions. [2021-11-12 23:11:06,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-12 23:11:06,642 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:11:06,642 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:11:06,695 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c911db27-27b2-4434-a356-39a2be0c644f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-12 23:11:06,862 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c911db27-27b2-4434-a356-39a2be0c644f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:11:06,862 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:11:06,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:11:06,863 INFO L85 PathProgramCache]: Analyzing trace with hash 759322579, now seen corresponding path program 1 times [2021-11-12 23:11:06,864 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:11:06,864 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [122427904] [2021-11-12 23:11:06,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:11:06,865 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:11:06,865 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c911db27-27b2-4434-a356-39a2be0c644f/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:11:06,875 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c911db27-27b2-4434-a356-39a2be0c644f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:11:06,880 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c911db27-27b2-4434-a356-39a2be0c644f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-12 23:11:08,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:11:08,751 INFO L263 TraceCheckSpWp]: Trace formula consists of 359 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-12 23:11:08,753 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:11:09,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:11:09,053 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:11:09,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:11:09,347 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:11:09,347 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [122427904] [2021-11-12 23:11:09,347 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [122427904] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:11:09,348 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:11:09,348 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-12 23:11:09,348 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393713535] [2021-11-12 23:11:09,348 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:11:09,349 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-12 23:11:09,350 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:11:09,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-12 23:11:09,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-11-12 23:11:09,360 INFO L87 Difference]: Start difference. First operand 246 states and 343 transitions. Second operand has 8 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:11:09,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:11:09,447 INFO L93 Difference]: Finished difference Result 265 states and 364 transitions. [2021-11-12 23:11:09,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-12 23:11:09,448 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-11-12 23:11:09,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:11:09,449 INFO L225 Difference]: With dead ends: 265 [2021-11-12 23:11:09,449 INFO L226 Difference]: Without dead ends: 27 [2021-11-12 23:11:09,451 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-11-12 23:11:09,453 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 5 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.26ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.33ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 3 IncrementalHoareTripleChecker+Unchecked, 26.05ms IncrementalHoareTripleChecker+Time [2021-11-12 23:11:09,454 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 78 Invalid, 9 Unknown, 0 Unchecked, 1.33ms Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 3 Unchecked, 26.05ms Time] [2021-11-12 23:11:09,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-11-12 23:11:09,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2021-11-12 23:11:09,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 24 states have (on average 1.1666666666666667) internal successors, (28), 24 states have internal predecessors, (28), 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) [2021-11-12 23:11:09,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2021-11-12 23:11:09,458 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 11 [2021-11-12 23:11:09,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:11:09,458 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 30 transitions. [2021-11-12 23:11:09,459 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:11:09,459 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2021-11-12 23:11:09,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-12 23:11:09,459 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:11:09,460 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:11:09,518 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c911db27-27b2-4434-a356-39a2be0c644f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-12 23:11:09,674 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c911db27-27b2-4434-a356-39a2be0c644f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:11:09,674 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:11:09,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:11:09,675 INFO L85 PathProgramCache]: Analyzing trace with hash 1983106081, now seen corresponding path program 1 times [2021-11-12 23:11:09,676 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:11:09,676 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1254892148] [2021-11-12 23:11:09,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:11:09,676 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:11:09,677 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c911db27-27b2-4434-a356-39a2be0c644f/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:11:09,690 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c911db27-27b2-4434-a356-39a2be0c644f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:11:09,712 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c911db27-27b2-4434-a356-39a2be0c644f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-12 23:11:11,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:11:11,511 INFO L263 TraceCheckSpWp]: Trace formula consists of 385 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-12 23:11:11,513 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:11:12,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:11:12,011 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:11:13,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:11:13,033 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:11:13,034 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1254892148] [2021-11-12 23:11:13,034 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1254892148] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:11:13,034 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:11:13,034 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 13 [2021-11-12 23:11:13,035 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285919473] [2021-11-12 23:11:13,035 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:11:13,035 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-12 23:11:13,036 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:11:13,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-12 23:11:13,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2021-11-12 23:11:13,037 INFO L87 Difference]: Start difference. First operand 27 states and 30 transitions. Second operand has 13 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 11 states have internal predecessors, (32), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-12 23:11:15,946 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-12 23:11:18,062 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-12 23:11:20,067 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-12 23:11:22,223 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-12 23:11:24,227 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-12 23:11:24,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:11:24,723 INFO L93 Difference]: Finished difference Result 43 states and 45 transitions. [2021-11-12 23:11:24,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-12 23:11:24,724 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 11 states have internal predecessors, (32), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 20 [2021-11-12 23:11:24,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:11:24,725 INFO L225 Difference]: With dead ends: 43 [2021-11-12 23:11:24,725 INFO L226 Difference]: Without dead ends: 40 [2021-11-12 23:11:24,726 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=66, Invalid=276, Unknown=0, NotChecked=0, Total=342 [2021-11-12 23:11:24,728 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 55 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 6 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10747.86ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 170 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.87ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10919.89ms IncrementalHoareTripleChecker+Time [2021-11-12 23:11:24,729 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [57 Valid, 170 Invalid, 81 Unknown, 0 Unchecked, 7.87ms Time], IncrementalHoareTripleChecker [6 Valid, 70 Invalid, 5 Unknown, 0 Unchecked, 10919.89ms Time] [2021-11-12 23:11:24,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2021-11-12 23:11:24,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 32. [2021-11-12 23:11:24,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 28 states have (on average 1.1428571428571428) internal successors, (32), 28 states have internal predecessors, (32), 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) [2021-11-12 23:11:24,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 35 transitions. [2021-11-12 23:11:24,736 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 35 transitions. Word has length 20 [2021-11-12 23:11:24,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:11:24,737 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 35 transitions. [2021-11-12 23:11:24,737 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 11 states have internal predecessors, (32), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-12 23:11:24,738 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 35 transitions. [2021-11-12 23:11:24,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-12 23:11:24,739 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:11:24,739 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:11:24,793 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c911db27-27b2-4434-a356-39a2be0c644f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-11-12 23:11:24,962 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c911db27-27b2-4434-a356-39a2be0c644f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:11:24,962 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:11:24,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:11:24,963 INFO L85 PathProgramCache]: Analyzing trace with hash 1085069118, now seen corresponding path program 1 times [2021-11-12 23:11:24,964 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:11:24,964 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2129647126] [2021-11-12 23:11:24,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:11:24,965 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:11:24,965 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c911db27-27b2-4434-a356-39a2be0c644f/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:11:24,967 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c911db27-27b2-4434-a356-39a2be0c644f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:11:24,968 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c911db27-27b2-4434-a356-39a2be0c644f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-12 23:11:27,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:11:27,641 INFO L263 TraceCheckSpWp]: Trace formula consists of 388 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-12 23:11:27,643 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:11:28,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:11:28,199 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:11:29,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:11:29,520 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:11:29,520 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2129647126] [2021-11-12 23:11:29,521 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2129647126] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:11:29,521 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:11:29,521 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 11 [2021-11-12 23:11:29,521 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352108893] [2021-11-12 23:11:29,521 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:11:29,522 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-12 23:11:29,522 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:11:29,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-12 23:11:29,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2021-11-12 23:11:29,523 INFO L87 Difference]: Start difference. First operand 32 states and 35 transitions. Second operand has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 11 states have internal predecessors, (29), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-12 23:11:31,963 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-12 23:11:31,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:11:31,964 INFO L93 Difference]: Finished difference Result 46 states and 50 transitions. [2021-11-12 23:11:32,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-12 23:11:32,014 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 11 states have internal predecessors, (29), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 21 [2021-11-12 23:11:32,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:11:32,015 INFO L225 Difference]: With dead ends: 46 [2021-11-12 23:11:32,016 INFO L226 Difference]: Without dead ends: 32 [2021-11-12 23:11:32,016 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 30 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2021-11-12 23:11:32,019 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 13 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2179.33ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.79ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 16 IncrementalHoareTripleChecker+Unchecked, 2186.93ms IncrementalHoareTripleChecker+Time [2021-11-12 23:11:32,020 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 114 Invalid, 25 Unknown, 0 Unchecked, 0.79ms Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 1 Unknown, 16 Unchecked, 2186.93ms Time] [2021-11-12 23:11:32,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-11-12 23:11:32,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2021-11-12 23:11:32,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 28 states have (on average 1.1071428571428572) internal successors, (31), 28 states have internal predecessors, (31), 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) [2021-11-12 23:11:32,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 34 transitions. [2021-11-12 23:11:32,026 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 34 transitions. Word has length 21 [2021-11-12 23:11:32,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:11:32,027 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 34 transitions. [2021-11-12 23:11:32,027 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 11 states have internal predecessors, (29), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-12 23:11:32,028 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 34 transitions. [2021-11-12 23:11:32,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-12 23:11:32,029 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:11:32,029 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:11:32,082 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c911db27-27b2-4434-a356-39a2be0c644f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2021-11-12 23:11:32,234 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c911db27-27b2-4434-a356-39a2be0c644f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:11:32,234 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:11:32,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:11:32,235 INFO L85 PathProgramCache]: Analyzing trace with hash 452402173, now seen corresponding path program 1 times [2021-11-12 23:11:32,236 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:11:32,236 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1263615236] [2021-11-12 23:11:32,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:11:32,236 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:11:32,242 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c911db27-27b2-4434-a356-39a2be0c644f/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:11:32,249 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c911db27-27b2-4434-a356-39a2be0c644f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:11:32,250 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c911db27-27b2-4434-a356-39a2be0c644f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-12 23:11:34,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:11:34,816 INFO L263 TraceCheckSpWp]: Trace formula consists of 389 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-12 23:11:34,817 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:11:35,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:11:35,245 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:11:38,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:11:38,639 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:11:38,639 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1263615236] [2021-11-12 23:11:38,640 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1263615236] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:11:38,640 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:11:38,640 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2021-11-12 23:11:38,640 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901082964] [2021-11-12 23:11:38,641 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:11:38,641 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-12 23:11:38,641 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:11:38,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-12 23:11:38,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-11-12 23:11:38,642 INFO L87 Difference]: Start difference. First operand 32 states and 34 transitions. Second operand has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 7 states have internal predecessors, (31), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-12 23:11:41,445 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.20s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-12 23:11:43,805 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-12 23:11:45,948 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-12 23:11:45,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:11:45,949 INFO L93 Difference]: Finished difference Result 39 states and 40 transitions. [2021-11-12 23:11:46,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 23:11:46,003 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 7 states have internal predecessors, (31), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 22 [2021-11-12 23:11:46,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:11:46,004 INFO L225 Difference]: With dead ends: 39 [2021-11-12 23:11:46,004 INFO L226 Difference]: Without dead ends: 25 [2021-11-12 23:11:46,004 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-11-12 23:11:46,005 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 24 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6981.24ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.80ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7092.84ms IncrementalHoareTripleChecker+Time [2021-11-12 23:11:46,006 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [25 Valid, 80 Invalid, 24 Unknown, 0 Unchecked, 0.80ms Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 3 Unknown, 0 Unchecked, 7092.84ms Time] [2021-11-12 23:11:46,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2021-11-12 23:11:46,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2021-11-12 23:11:46,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 22 states have (on average 1.0) internal successors, (22), 22 states have internal predecessors, (22), 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) [2021-11-12 23:11:46,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 24 transitions. [2021-11-12 23:11:46,010 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 24 transitions. Word has length 22 [2021-11-12 23:11:46,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:11:46,010 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 24 transitions. [2021-11-12 23:11:46,011 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 7 states have internal predecessors, (31), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-12 23:11:46,016 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 24 transitions. [2021-11-12 23:11:46,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-12 23:11:46,017 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:11:46,017 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:11:46,070 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c911db27-27b2-4434-a356-39a2be0c644f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2021-11-12 23:11:46,219 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c911db27-27b2-4434-a356-39a2be0c644f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:11:46,219 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:11:46,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:11:46,225 INFO L85 PathProgramCache]: Analyzing trace with hash -1043993930, now seen corresponding path program 1 times [2021-11-12 23:11:46,225 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:11:46,226 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1881158735] [2021-11-12 23:11:46,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:11:46,226 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:11:46,226 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c911db27-27b2-4434-a356-39a2be0c644f/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:11:46,229 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c911db27-27b2-4434-a356-39a2be0c644f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:11:46,231 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c911db27-27b2-4434-a356-39a2be0c644f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-12 23:11:48,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:11:48,413 INFO L263 TraceCheckSpWp]: Trace formula consists of 399 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-12 23:11:48,416 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:11:49,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:11:49,254 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:11:50,800 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:11:50,800 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1881158735] [2021-11-12 23:11:50,801 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Shadow problem: [|v_ULTIMATE.start___signbit_float_~w~0#1_5|] [2021-11-12 23:11:50,801 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1052330529] [2021-11-12 23:11:50,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:11:50,802 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-12 23:11:50,802 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c911db27-27b2-4434-a356-39a2be0c644f/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-12 23:11:50,805 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c911db27-27b2-4434-a356-39a2be0c644f/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-12 23:11:50,806 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c911db27-27b2-4434-a356-39a2be0c644f/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (8)] Waiting until timeout for monitored process [2021-11-12 23:12:05,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:12:05,503 INFO L263 TraceCheckSpWp]: Trace formula consists of 399 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-12 23:12:05,512 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:12:05,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:12:05,777 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:12:06,574 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Shadow problem: [|v_ULTIMATE.start___signbit_float_~w~0#1_5|] [2021-11-12 23:12:06,574 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [919005021] [2021-11-12 23:12:06,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:12:06,575 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 23:12:06,575 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c911db27-27b2-4434-a356-39a2be0c644f/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 23:12:06,577 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c911db27-27b2-4434-a356-39a2be0c644f/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 23:12:06,601 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c911db27-27b2-4434-a356-39a2be0c644f/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process