./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_0832a.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0f8a17c6 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace35cbe-1611-4b6f-b73d-33a1212ae143/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace35cbe-1611-4b6f-b73d-33a1212ae143/bin/utaipan-UbGMyvGFUs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace35cbe-1611-4b6f-b73d-33a1212ae143/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace35cbe-1611-4b6f-b73d-33a1212ae143/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_0832a.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace35cbe-1611-4b6f-b73d-33a1212ae143/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace35cbe-1611-4b6f-b73d-33a1212ae143/bin/utaipan-UbGMyvGFUs --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ccec72d1445b0e5a7d371146f8f1ae3659440ba0ebb02d40d87a31c04bfcf378 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 15:01:32,026 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 15:01:32,028 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 15:01:32,061 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 15:01:32,062 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 15:01:32,063 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 15:01:32,065 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 15:01:32,067 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 15:01:32,069 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 15:01:32,070 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 15:01:32,071 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 15:01:32,073 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 15:01:32,073 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 15:01:32,075 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 15:01:32,076 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 15:01:32,078 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 15:01:32,079 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 15:01:32,080 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 15:01:32,082 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 15:01:32,084 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 15:01:32,086 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 15:01:32,090 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 15:01:32,092 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 15:01:32,093 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 15:01:32,096 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 15:01:32,097 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 15:01:32,097 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 15:01:32,098 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 15:01:32,099 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 15:01:32,100 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 15:01:32,100 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 15:01:32,101 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 15:01:32,102 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 15:01:32,103 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 15:01:32,105 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 15:01:32,105 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 15:01:32,106 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 15:01:32,106 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 15:01:32,106 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 15:01:32,107 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 15:01:32,108 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 15:01:32,109 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace35cbe-1611-4b6f-b73d-33a1212ae143/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-19 15:01:32,137 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 15:01:32,138 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 15:01:32,139 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 15:01:32,139 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 15:01:32,139 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 15:01:32,139 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 15:01:32,140 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 15:01:32,140 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-19 15:01:32,140 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 15:01:32,140 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 15:01:32,140 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-19 15:01:32,141 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-19 15:01:32,141 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 15:01:32,141 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-19 15:01:32,141 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-19 15:01:32,142 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-19 15:01:32,142 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 15:01:32,143 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-19 15:01:32,143 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 15:01:32,143 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-19 15:01:32,143 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 15:01:32,144 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 15:01:32,144 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 15:01:32,144 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 15:01:32,144 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 15:01:32,145 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-19 15:01:32,145 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 15:01:32,145 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 15:01:32,145 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 15:01:32,145 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 15:01:32,146 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 15:01:32,146 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 15:01:32,153 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 15:01:32,153 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 15:01:32,153 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 15:01:32,153 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-19 15:01:32,153 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-19 15:01:32,154 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 15:01:32,154 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 15:01:32,154 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 15:01:32,154 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_ace35cbe-1611-4b6f-b73d-33a1212ae143/bin/utaipan-UbGMyvGFUs/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace35cbe-1611-4b6f-b73d-33a1212ae143/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ccec72d1445b0e5a7d371146f8f1ae3659440ba0ebb02d40d87a31c04bfcf378 [2021-11-19 15:01:32,431 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 15:01:32,456 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 15:01:32,459 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 15:01:32,460 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 15:01:32,461 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 15:01:32,463 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace35cbe-1611-4b6f-b73d-33a1212ae143/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/float-newlib/float_req_bl_0832a.c [2021-11-19 15:01:32,552 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace35cbe-1611-4b6f-b73d-33a1212ae143/bin/utaipan-UbGMyvGFUs/data/31afc598d/42219b61f96145e9bc1f73273b211cfb/FLAGe828655d9 [2021-11-19 15:01:32,957 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 15:01:32,969 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace35cbe-1611-4b6f-b73d-33a1212ae143/sv-benchmarks/c/float-newlib/float_req_bl_0832a.c [2021-11-19 15:01:32,979 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace35cbe-1611-4b6f-b73d-33a1212ae143/bin/utaipan-UbGMyvGFUs/data/31afc598d/42219b61f96145e9bc1f73273b211cfb/FLAGe828655d9 [2021-11-19 15:01:33,358 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace35cbe-1611-4b6f-b73d-33a1212ae143/bin/utaipan-UbGMyvGFUs/data/31afc598d/42219b61f96145e9bc1f73273b211cfb [2021-11-19 15:01:33,360 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 15:01:33,362 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 15:01:33,364 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 15:01:33,364 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 15:01:33,367 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 15:01:33,368 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 03:01:33" (1/1) ... [2021-11-19 15:01:33,369 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a0df8b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:01:33, skipping insertion in model container [2021-11-19 15:01:33,369 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 03:01:33" (1/1) ... [2021-11-19 15:01:33,384 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 15:01:33,401 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 15:01:33,616 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace35cbe-1611-4b6f-b73d-33a1212ae143/sv-benchmarks/c/float-newlib/float_req_bl_0832a.c[3180,3193] [2021-11-19 15:01:33,619 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 15:01:33,629 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 15:01:33,663 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace35cbe-1611-4b6f-b73d-33a1212ae143/sv-benchmarks/c/float-newlib/float_req_bl_0832a.c[3180,3193] [2021-11-19 15:01:33,664 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 15:01:33,680 INFO L208 MainTranslator]: Completed translation [2021-11-19 15:01:33,681 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:01:33 WrapperNode [2021-11-19 15:01:33,681 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 15:01:33,682 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-19 15:01:33,683 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-19 15:01:33,683 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-19 15:01:33,691 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:01:33" (1/1) ... [2021-11-19 15:01:33,701 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:01:33" (1/1) ... [2021-11-19 15:01:33,734 INFO L137 Inliner]: procedures = 18, calls = 42, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 158 [2021-11-19 15:01:33,747 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-19 15:01:33,747 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 15:01:33,748 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 15:01:33,748 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 15:01:33,757 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:01:33" (1/1) ... [2021-11-19 15:01:33,759 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:01:33" (1/1) ... [2021-11-19 15:01:33,775 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:01:33" (1/1) ... [2021-11-19 15:01:33,775 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:01:33" (1/1) ... [2021-11-19 15:01:33,784 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:01:33" (1/1) ... [2021-11-19 15:01:33,794 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:01:33" (1/1) ... [2021-11-19 15:01:33,803 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:01:33" (1/1) ... [2021-11-19 15:01:33,811 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 15:01:33,815 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 15:01:33,816 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 15:01:33,816 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 15:01:33,817 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:01:33" (1/1) ... [2021-11-19 15:01:33,828 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 15:01:33,843 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace35cbe-1611-4b6f-b73d-33a1212ae143/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 15:01:33,861 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace35cbe-1611-4b6f-b73d-33a1212ae143/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 15:01:33,878 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace35cbe-1611-4b6f-b73d-33a1212ae143/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 15:01:33,920 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 15:01:33,920 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-19 15:01:33,921 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-19 15:01:33,921 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-19 15:01:33,921 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-11-19 15:01:33,921 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-11-19 15:01:33,921 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 15:01:33,922 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 15:01:33,922 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-19 15:01:33,922 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2021-11-19 15:01:33,923 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-19 15:01:34,047 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 15:01:34,049 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 15:01:34,384 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 15:01:34,429 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 15:01:34,429 INFO L301 CfgBuilder]: Removed 10 assume(true) statements. [2021-11-19 15:01:34,432 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 03:01:34 BoogieIcfgContainer [2021-11-19 15:01:34,432 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 15:01:34,434 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 15:01:34,434 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 15:01:34,444 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 15:01:34,445 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 03:01:33" (1/3) ... [2021-11-19 15:01:34,446 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44e9a426 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 03:01:34, skipping insertion in model container [2021-11-19 15:01:34,446 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:01:33" (2/3) ... [2021-11-19 15:01:34,446 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44e9a426 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 03:01:34, skipping insertion in model container [2021-11-19 15:01:34,446 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 03:01:34" (3/3) ... [2021-11-19 15:01:34,448 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_0832a.c [2021-11-19 15:01:34,453 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 15:01:34,453 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-19 15:01:34,504 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 15:01:34,511 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-19 15:01:34,512 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-19 15:01:34,527 INFO L276 IsEmpty]: Start isEmpty. Operand has 30 states, 28 states have (on average 1.75) internal successors, (49), 29 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:01:34,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-19 15:01:34,532 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:01:34,532 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:01:34,533 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:01:34,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:01:34,539 INFO L85 PathProgramCache]: Analyzing trace with hash -836543721, now seen corresponding path program 1 times [2021-11-19 15:01:34,547 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 15:01:34,547 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047727313] [2021-11-19 15:01:34,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:01:34,548 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 15:01:34,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:01:34,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:01:34,700 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 15:01:34,700 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047727313] [2021-11-19 15:01:34,701 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1047727313] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 15:01:34,701 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:01:34,702 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-19 15:01:34,704 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668845797] [2021-11-19 15:01:34,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 15:01:34,709 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-19 15:01:34,709 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 15:01:34,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-19 15:01:34,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-19 15:01:34,740 INFO L87 Difference]: Start difference. First operand has 30 states, 28 states have (on average 1.75) internal successors, (49), 29 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:01:34,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:01:34,788 INFO L93 Difference]: Finished difference Result 59 states and 97 transitions. [2021-11-19 15:01:34,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-19 15:01:34,790 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-11-19 15:01:34,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:01:34,799 INFO L225 Difference]: With dead ends: 59 [2021-11-19 15:01:34,800 INFO L226 Difference]: Without dead ends: 28 [2021-11-19 15:01:34,803 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-19 15:01:34,807 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 15:01:34,808 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 34 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 15:01:34,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-11-19 15:01:34,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2021-11-19 15:01:34,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.3333333333333333) internal successors, (36), 27 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:01:34,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 36 transitions. [2021-11-19 15:01:34,841 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 36 transitions. Word has length 7 [2021-11-19 15:01:34,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:01:34,841 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 36 transitions. [2021-11-19 15:01:34,841 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:01:34,842 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 36 transitions. [2021-11-19 15:01:34,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-19 15:01:34,842 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:01:34,842 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:01:34,843 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-19 15:01:34,843 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:01:34,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:01:34,844 INFO L85 PathProgramCache]: Analyzing trace with hash 2065220720, now seen corresponding path program 1 times [2021-11-19 15:01:34,845 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 15:01:34,845 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578343827] [2021-11-19 15:01:34,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:01:34,845 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 15:01:34,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-19 15:01:34,909 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-19 15:01:34,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-19 15:01:34,966 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-19 15:01:34,966 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-19 15:01:34,968 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-19 15:01:34,971 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-19 15:01:34,975 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2021-11-19 15:01:34,978 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-19 15:01:35,008 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 03:01:35 BoogieIcfgContainer [2021-11-19 15:01:35,008 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-19 15:01:35,009 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-19 15:01:35,009 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-19 15:01:35,009 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-19 15:01:35,010 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 03:01:34" (3/4) ... [2021-11-19 15:01:35,013 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-19 15:01:35,013 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-19 15:01:35,014 INFO L158 Benchmark]: Toolchain (without parser) took 1651.54ms. Allocated memory was 88.1MB in the beginning and 107.0MB in the end (delta: 18.9MB). Free memory was 52.6MB in the beginning and 76.4MB in the end (delta: -23.8MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 15:01:35,014 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 88.1MB. Free memory was 60.4MB in the beginning and 60.4MB in the end (delta: 21.6kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 15:01:35,015 INFO L158 Benchmark]: CACSL2BoogieTranslator took 317.75ms. Allocated memory was 88.1MB in the beginning and 107.0MB in the end (delta: 18.9MB). Free memory was 52.4MB in the beginning and 79.7MB in the end (delta: -27.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-19 15:01:35,016 INFO L158 Benchmark]: Boogie Procedure Inliner took 64.63ms. Allocated memory is still 107.0MB. Free memory was 79.7MB in the beginning and 77.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-19 15:01:35,016 INFO L158 Benchmark]: Boogie Preprocessor took 66.98ms. Allocated memory is still 107.0MB. Free memory was 77.6MB in the beginning and 76.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-19 15:01:35,017 INFO L158 Benchmark]: RCFGBuilder took 616.99ms. Allocated memory is still 107.0MB. Free memory was 76.0MB in the beginning and 60.8MB in the end (delta: 15.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2021-11-19 15:01:35,018 INFO L158 Benchmark]: TraceAbstraction took 574.13ms. Allocated memory is still 107.0MB. Free memory was 60.3MB in the beginning and 76.7MB in the end (delta: -16.5MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 15:01:35,018 INFO L158 Benchmark]: Witness Printer took 3.95ms. Allocated memory is still 107.0MB. Free memory was 76.7MB in the beginning and 76.4MB in the end (delta: 314.5kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 15:01:35,022 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 88.1MB. Free memory was 60.4MB in the beginning and 60.4MB in the end (delta: 21.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 317.75ms. Allocated memory was 88.1MB in the beginning and 107.0MB in the end (delta: 18.9MB). Free memory was 52.4MB in the beginning and 79.7MB in the end (delta: -27.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 64.63ms. Allocated memory is still 107.0MB. Free memory was 79.7MB in the beginning and 77.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 66.98ms. Allocated memory is still 107.0MB. Free memory was 77.6MB in the beginning and 76.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 616.99ms. Allocated memory is still 107.0MB. Free memory was 76.0MB in the beginning and 60.8MB in the end (delta: 15.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 574.13ms. Allocated memory is still 107.0MB. Free memory was 60.3MB in the beginning and 76.7MB in the end (delta: -16.5MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 3.95ms. Allocated memory is still 107.0MB. Free memory was 76.7MB in the beginning and 76.4MB in the end (delta: 314.5kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 124]: 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 123, overapproximation of someUnaryDOUBLEoperation at line 21, overapproximation of bitwiseAnd at line 48, overapproximation of someBinaryArithmeticFLOAToperation at line 52. Possible FailurePath: [L17-L36] static const float one_exp = 1.0, halF_exp[2] = { 0.5, -0.5, }, huge_exp = 1.0e+30, twom100_exp = 7.8886090522e-31, ln2HI_exp[2] = { 6.9313812256e-01, -6.9313812256e-01, }, ln2LO_exp[2] = { 9.0580006145e-06, -9.0580006145e-06, }, invln2_exp = 1.4426950216e+00, P1_exp = 1.6666667163e-01, P2_exp = -2.7777778450e-03, P3_exp = 6.6137559770e-05, P4_exp = -1.6533901999e-06, P5_exp = 4.1381369442e-08; [L119] float x = 0.0f; [L120] CALL, EXPR __ieee754_expf(x) [L39] float y, hi, lo, c, t; [L40] __int32_t k = 0, xsb, sx; [L41] __uint32_t hx; VAL [\old(x)=0, halF_exp={9:0}, huge_exp=1000000000000000000000000000000, invln2_exp=1803368777/1250000000, k=0, ln2HI_exp={6:0}, ln2LO_exp={7:0}, one_exp=1, P1_exp=16666667163/100000000000, P3_exp=6613755977/100000000000000, P5_exp=20690684721/500000000000000000, twom100_exp=39443045261/50000000000000000000000000000000000000000, x=0] [L44] ieee_float_shape_type gf_u; [L45] gf_u.value = (x) [L46] EXPR gf_u.word [L46] (sx) = gf_u.word [L48] xsb = (sx >> 31) & 1 [L49] hx = sx & 0x7fffffff VAL [\old(x)=0, halF_exp={9:0}, huge_exp=1000000000000000000000000000000, invln2_exp=1803368777/1250000000, k=0, ln2HI_exp={6:0}, ln2LO_exp={7:0}, one_exp=1, P1_exp=16666667163/100000000000, P3_exp=6613755977/100000000000000, P5_exp=20690684721/500000000000000000, sx=-1, twom100_exp=39443045261/50000000000000000000000000000000000000000, x=0] [L51] COND TRUE ((hx) > 0x7f800000L) [L52] return x + x; VAL [\old(x)=0, halF_exp={9:0}, huge_exp=1000000000000000000000000000000, hx=2139095041, invln2_exp=1803368777/1250000000, k=0, ln2HI_exp={6:0}, ln2LO_exp={7:0}, one_exp=1, P1_exp=16666667163/100000000000, P3_exp=6613755977/100000000000000, P5_exp=20690684721/500000000000000000, sx=-1, twom100_exp=39443045261/50000000000000000000000000000000000000000, x=0] [L120] RET, EXPR __ieee754_expf(x) [L120] float res = __ieee754_expf(x); [L123] COND TRUE res != 1.0f VAL [halF_exp={9:0}, huge_exp=1000000000000000000000000000000, invln2_exp=1803368777/1250000000, ln2HI_exp={6:0}, ln2LO_exp={7:0}, one_exp=1, P1_exp=16666667163/100000000000, P3_exp=6613755977/100000000000000, P5_exp=20690684721/500000000000000000, res=1000000000000000000000000000001, twom100_exp=39443045261/50000000000000000000000000000000000000000, x=0] [L124] reach_error() VAL [halF_exp={9:0}, huge_exp=1000000000000000000000000000000, invln2_exp=1803368777/1250000000, ln2HI_exp={6:0}, ln2LO_exp={7:0}, one_exp=1, P1_exp=16666667163/100000000000, P3_exp=6613755977/100000000000000, P5_exp=20690684721/500000000000000000, res=1000000000000000000000000000001, twom100_exp=39443045261/50000000000000000000000000000000000000000, x=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 30 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.5s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 34 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4 IncrementalHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 34 mSDtfsCounter, 4 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=30occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 15 NumberOfCodeBlocks, 15 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 6 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-11-19 15:01:35,082 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace35cbe-1611-4b6f-b73d-33a1212ae143/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace35cbe-1611-4b6f-b73d-33a1212ae143/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace35cbe-1611-4b6f-b73d-33a1212ae143/bin/utaipan-UbGMyvGFUs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace35cbe-1611-4b6f-b73d-33a1212ae143/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace35cbe-1611-4b6f-b73d-33a1212ae143/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_0832a.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace35cbe-1611-4b6f-b73d-33a1212ae143/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace35cbe-1611-4b6f-b73d-33a1212ae143/bin/utaipan-UbGMyvGFUs --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ccec72d1445b0e5a7d371146f8f1ae3659440ba0ebb02d40d87a31c04bfcf378 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 15:01:37,713 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 15:01:37,715 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 15:01:37,758 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 15:01:37,759 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 15:01:37,763 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 15:01:37,769 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 15:01:37,777 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 15:01:37,780 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 15:01:37,786 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 15:01:37,787 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 15:01:37,788 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 15:01:37,789 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 15:01:37,790 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 15:01:37,791 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 15:01:37,793 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 15:01:37,793 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 15:01:37,795 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 15:01:37,807 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 15:01:37,816 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 15:01:37,819 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 15:01:37,821 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 15:01:37,826 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 15:01:37,829 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 15:01:37,836 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 15:01:37,836 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 15:01:37,837 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 15:01:37,838 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 15:01:37,838 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 15:01:37,840 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 15:01:37,840 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 15:01:37,841 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 15:01:37,842 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 15:01:37,843 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 15:01:37,844 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 15:01:37,845 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 15:01:37,846 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 15:01:37,851 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 15:01:37,851 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 15:01:37,854 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 15:01:37,855 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 15:01:37,859 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace35cbe-1611-4b6f-b73d-33a1212ae143/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-19 15:01:37,902 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 15:01:37,902 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 15:01:37,903 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 15:01:37,904 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 15:01:37,904 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 15:01:37,904 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 15:01:37,904 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 15:01:37,905 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 15:01:37,905 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 15:01:37,905 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 15:01:37,906 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 15:01:37,906 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-19 15:01:37,906 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-19 15:01:37,907 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 15:01:37,907 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 15:01:37,907 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 15:01:37,907 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 15:01:37,908 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 15:01:37,908 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-19 15:01:37,908 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-19 15:01:37,908 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-19 15:01:37,909 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 15:01:37,909 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 15:01:37,909 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 15:01:37,909 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 15:01:37,910 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-19 15:01:37,910 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 15:01:37,910 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 15:01:37,910 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 15:01:37,911 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 15:01:37,911 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 15:01:37,911 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-19 15:01:37,911 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-19 15:01:37,912 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 15:01:37,912 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 15:01:37,912 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 15:01:37,912 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_ace35cbe-1611-4b6f-b73d-33a1212ae143/bin/utaipan-UbGMyvGFUs/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace35cbe-1611-4b6f-b73d-33a1212ae143/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ccec72d1445b0e5a7d371146f8f1ae3659440ba0ebb02d40d87a31c04bfcf378 [2021-11-19 15:01:38,270 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 15:01:38,295 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 15:01:38,298 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 15:01:38,299 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 15:01:38,300 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 15:01:38,301 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace35cbe-1611-4b6f-b73d-33a1212ae143/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/float-newlib/float_req_bl_0832a.c [2021-11-19 15:01:38,381 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace35cbe-1611-4b6f-b73d-33a1212ae143/bin/utaipan-UbGMyvGFUs/data/4455a1131/4561bca0092d4057a3b33d56772aeb27/FLAG393da46f5 [2021-11-19 15:01:38,939 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 15:01:38,941 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace35cbe-1611-4b6f-b73d-33a1212ae143/sv-benchmarks/c/float-newlib/float_req_bl_0832a.c [2021-11-19 15:01:38,952 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace35cbe-1611-4b6f-b73d-33a1212ae143/bin/utaipan-UbGMyvGFUs/data/4455a1131/4561bca0092d4057a3b33d56772aeb27/FLAG393da46f5 [2021-11-19 15:01:39,303 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace35cbe-1611-4b6f-b73d-33a1212ae143/bin/utaipan-UbGMyvGFUs/data/4455a1131/4561bca0092d4057a3b33d56772aeb27 [2021-11-19 15:01:39,309 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 15:01:39,311 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 15:01:39,315 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 15:01:39,315 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 15:01:39,318 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 15:01:39,320 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 03:01:39" (1/1) ... [2021-11-19 15:01:39,321 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@556b30d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:01:39, skipping insertion in model container [2021-11-19 15:01:39,322 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 03:01:39" (1/1) ... [2021-11-19 15:01:39,329 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 15:01:39,372 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 15:01:39,557 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace35cbe-1611-4b6f-b73d-33a1212ae143/sv-benchmarks/c/float-newlib/float_req_bl_0832a.c[3180,3193] [2021-11-19 15:01:39,560 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 15:01:39,620 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 15:01:39,661 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace35cbe-1611-4b6f-b73d-33a1212ae143/sv-benchmarks/c/float-newlib/float_req_bl_0832a.c[3180,3193] [2021-11-19 15:01:39,662 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 15:01:39,682 INFO L208 MainTranslator]: Completed translation [2021-11-19 15:01:39,682 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:01:39 WrapperNode [2021-11-19 15:01:39,682 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 15:01:39,683 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-19 15:01:39,684 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-19 15:01:39,684 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-19 15:01:39,691 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:01:39" (1/1) ... [2021-11-19 15:01:39,705 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:01:39" (1/1) ... [2021-11-19 15:01:39,736 INFO L137 Inliner]: procedures = 21, calls = 42, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 159 [2021-11-19 15:01:39,736 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-19 15:01:39,737 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 15:01:39,737 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 15:01:39,738 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 15:01:39,747 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:01:39" (1/1) ... [2021-11-19 15:01:39,747 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:01:39" (1/1) ... [2021-11-19 15:01:39,753 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:01:39" (1/1) ... [2021-11-19 15:01:39,753 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:01:39" (1/1) ... [2021-11-19 15:01:39,768 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:01:39" (1/1) ... [2021-11-19 15:01:39,774 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:01:39" (1/1) ... [2021-11-19 15:01:39,777 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:01:39" (1/1) ... [2021-11-19 15:01:39,783 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 15:01:39,784 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 15:01:39,784 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 15:01:39,784 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 15:01:39,785 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:01:39" (1/1) ... [2021-11-19 15:01:39,792 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 15:01:39,807 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace35cbe-1611-4b6f-b73d-33a1212ae143/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 15:01:39,819 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace35cbe-1611-4b6f-b73d-33a1212ae143/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 15:01:39,842 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace35cbe-1611-4b6f-b73d-33a1212ae143/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 15:01:39,870 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 15:01:39,870 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4 [2021-11-19 15:01:39,870 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-19 15:01:39,870 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-19 15:01:39,871 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2021-11-19 15:01:39,871 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-19 15:01:39,871 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 15:01:39,871 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 15:01:39,871 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2021-11-19 15:01:39,872 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-19 15:01:39,872 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-19 15:01:40,003 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 15:01:40,005 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 15:01:48,396 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 15:01:48,402 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 15:01:48,402 INFO L301 CfgBuilder]: Removed 10 assume(true) statements. [2021-11-19 15:01:48,405 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 03:01:48 BoogieIcfgContainer [2021-11-19 15:01:48,405 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 15:01:48,407 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 15:01:48,408 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 15:01:48,411 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 15:01:48,412 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 03:01:39" (1/3) ... [2021-11-19 15:01:48,413 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52170d23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 03:01:48, skipping insertion in model container [2021-11-19 15:01:48,413 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:01:39" (2/3) ... [2021-11-19 15:01:48,414 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52170d23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 03:01:48, skipping insertion in model container [2021-11-19 15:01:48,414 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 03:01:48" (3/3) ... [2021-11-19 15:01:48,416 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_0832a.c [2021-11-19 15:01:48,424 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 15:01:48,424 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-19 15:01:48,494 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 15:01:48,503 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-19 15:01:48,504 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-19 15:01:48,518 INFO L276 IsEmpty]: Start isEmpty. Operand has 36 states, 34 states have (on average 1.6764705882352942) internal successors, (57), 35 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:01:48,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-19 15:01:48,523 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:01:48,523 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:01:48,524 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:01:48,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:01:48,530 INFO L85 PathProgramCache]: Analyzing trace with hash 354246130, now seen corresponding path program 1 times [2021-11-19 15:01:48,543 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:01:48,543 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1666737799] [2021-11-19 15:01:48,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:01:48,545 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:01:48,545 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace35cbe-1611-4b6f-b73d-33a1212ae143/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:01:48,548 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace35cbe-1611-4b6f-b73d-33a1212ae143/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:01:48,551 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace35cbe-1611-4b6f-b73d-33a1212ae143/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-19 15:01:49,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:01:49,106 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-19 15:01:49,110 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:01:49,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:01:49,191 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:01:49,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:01:49,240 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:01:49,240 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1666737799] [2021-11-19 15:01:49,241 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1666737799] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:01:49,241 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:01:49,242 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-19 15:01:49,243 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351146995] [2021-11-19 15:01:49,244 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:01:49,264 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-19 15:01:49,264 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:01:49,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-19 15:01:49,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-19 15:01:49,315 INFO L87 Difference]: Start difference. First operand has 36 states, 34 states have (on average 1.6764705882352942) internal successors, (57), 35 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:01:49,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:01:49,343 INFO L93 Difference]: Finished difference Result 70 states and 112 transitions. [2021-11-19 15:01:49,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-19 15:01:49,359 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-19 15:01:49,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:01:49,373 INFO L225 Difference]: With dead ends: 70 [2021-11-19 15:01:49,373 INFO L226 Difference]: Without dead ends: 33 [2021-11-19 15:01:49,376 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-19 15:01:49,384 INFO L933 BasicCegarLoop]: 46 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 15:01:49,386 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 15:01:49,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2021-11-19 15:01:49,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2021-11-19 15:01:49,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 32 states have (on average 1.34375) internal successors, (43), 32 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:01:49,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 43 transitions. [2021-11-19 15:01:49,424 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 43 transitions. Word has length 8 [2021-11-19 15:01:49,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:01:49,424 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 43 transitions. [2021-11-19 15:01:49,425 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:01:49,425 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 43 transitions. [2021-11-19 15:01:49,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-19 15:01:49,426 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:01:49,426 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:01:49,450 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace35cbe-1611-4b6f-b73d-33a1212ae143/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-11-19 15:01:49,647 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace35cbe-1611-4b6f-b73d-33a1212ae143/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:01:49,647 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:01:49,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:01:49,648 INFO L85 PathProgramCache]: Analyzing trace with hash 325000437, now seen corresponding path program 1 times [2021-11-19 15:01:49,649 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:01:49,649 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [749889322] [2021-11-19 15:01:49,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:01:49,650 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:01:49,650 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace35cbe-1611-4b6f-b73d-33a1212ae143/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:01:49,655 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace35cbe-1611-4b6f-b73d-33a1212ae143/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:01:49,698 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace35cbe-1611-4b6f-b73d-33a1212ae143/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-19 15:01:50,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:01:50,335 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-19 15:01:50,338 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:01:50,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:01:50,634 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:01:50,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:01:50,922 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:01:50,922 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [749889322] [2021-11-19 15:01:50,923 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [749889322] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:01:50,923 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:01:50,923 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-19 15:01:50,923 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937920877] [2021-11-19 15:01:50,924 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:01:50,925 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 15:01:50,925 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:01:50,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 15:01:50,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-19 15:01:50,927 INFO L87 Difference]: Start difference. First operand 33 states and 43 transitions. Second operand has 8 states, 8 states have (on average 1.75) internal successors, (14), 8 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:01:53,892 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 15:01:55,895 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 15:01:58,104 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.21s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-19 15:02:00,857 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.21s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-19 15:02:03,167 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.31s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-19 15:02:03,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:02:03,172 INFO L93 Difference]: Finished difference Result 55 states and 65 transitions. [2021-11-19 15:02:03,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 15:02:03,253 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.75) internal successors, (14), 8 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-11-19 15:02:03,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:02:03,255 INFO L225 Difference]: With dead ends: 55 [2021-11-19 15:02:03,255 INFO L226 Difference]: Without dead ends: 51 [2021-11-19 15:02:03,256 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-11-19 15:02:03,258 INFO L933 BasicCegarLoop]: 40 mSDtfsCounter, 31 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 3 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 179 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 13 IncrementalHoareTripleChecker+Unchecked, 12.1s IncrementalHoareTripleChecker+Time [2021-11-19 15:02:03,258 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [31 Valid, 179 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 24 Invalid, 5 Unknown, 13 Unchecked, 12.1s Time] [2021-11-19 15:02:03,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2021-11-19 15:02:03,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 33. [2021-11-19 15:02:03,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 32 states have (on average 1.3125) internal successors, (42), 32 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:02:03,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 42 transitions. [2021-11-19 15:02:03,279 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 42 transitions. Word has length 9 [2021-11-19 15:02:03,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:02:03,279 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 42 transitions. [2021-11-19 15:02:03,279 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.75) internal successors, (14), 8 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:02:03,279 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 42 transitions. [2021-11-19 15:02:03,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-19 15:02:03,280 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:02:03,280 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:02:03,300 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace35cbe-1611-4b6f-b73d-33a1212ae143/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-19 15:02:03,480 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace35cbe-1611-4b6f-b73d-33a1212ae143/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:02:03,481 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:02:03,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:02:03,482 INFO L85 PathProgramCache]: Analyzing trace with hash -1239545392, now seen corresponding path program 1 times [2021-11-19 15:02:03,482 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:02:03,482 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [525420321] [2021-11-19 15:02:03,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:02:03,483 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:02:03,483 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace35cbe-1611-4b6f-b73d-33a1212ae143/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:02:03,487 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace35cbe-1611-4b6f-b73d-33a1212ae143/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:02:03,488 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace35cbe-1611-4b6f-b73d-33a1212ae143/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-19 15:02:03,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:02:03,962 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-19 15:02:03,964 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:02:04,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:02:04,110 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:02:04,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:02:04,308 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:02:04,308 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [525420321] [2021-11-19 15:02:04,308 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [525420321] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:02:04,309 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:02:04,309 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-19 15:02:04,309 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415808231] [2021-11-19 15:02:04,309 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:02:04,310 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 15:02:04,310 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:02:04,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 15:02:04,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-19 15:02:04,311 INFO L87 Difference]: Start difference. First operand 33 states and 42 transitions. Second operand has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:02:06,754 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 15:02:08,557 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.80s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-19 15:02:10,818 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.81s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-19 15:02:13,077 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.26s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-19 15:02:15,343 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.27s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-19 15:02:17,349 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-19 15:02:19,617 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.27s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-19 15:02:21,903 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.28s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-19 15:02:24,184 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.28s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-19 15:02:26,481 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.30s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-19 15:02:26,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:02:26,485 INFO L93 Difference]: Finished difference Result 72 states and 82 transitions. [2021-11-19 15:02:26,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 15:02:26,572 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-11-19 15:02:26,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:02:26,574 INFO L225 Difference]: With dead ends: 72 [2021-11-19 15:02:26,574 INFO L226 Difference]: Without dead ends: 68 [2021-11-19 15:02:26,575 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-19 15:02:26,576 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 136 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 8 IncrementalHoareTripleChecker+Unchecked, 22.1s IncrementalHoareTripleChecker+Time [2021-11-19 15:02:26,577 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [136 Valid, 80 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 7 Unknown, 8 Unchecked, 22.1s Time] [2021-11-19 15:02:26,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2021-11-19 15:02:26,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 33. [2021-11-19 15:02:26,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 32 states have (on average 1.25) internal successors, (40), 32 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:02:26,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 40 transitions. [2021-11-19 15:02:26,586 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 40 transitions. Word has length 11 [2021-11-19 15:02:26,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:02:26,586 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 40 transitions. [2021-11-19 15:02:26,587 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:02:26,587 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 40 transitions. [2021-11-19 15:02:26,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-19 15:02:26,588 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:02:26,588 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:02:26,622 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace35cbe-1611-4b6f-b73d-33a1212ae143/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-19 15:02:26,802 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace35cbe-1611-4b6f-b73d-33a1212ae143/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:02:26,803 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:02:26,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:02:26,803 INFO L85 PathProgramCache]: Analyzing trace with hash -40038256, now seen corresponding path program 1 times [2021-11-19 15:02:26,804 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:02:26,804 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [385289275] [2021-11-19 15:02:26,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:02:26,804 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:02:26,805 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace35cbe-1611-4b6f-b73d-33a1212ae143/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:02:26,805 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace35cbe-1611-4b6f-b73d-33a1212ae143/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:02:26,806 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace35cbe-1611-4b6f-b73d-33a1212ae143/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-19 15:02:27,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:02:27,334 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-19 15:02:27,336 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:02:27,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:02:27,584 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:02:27,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:02:27,907 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:02:27,908 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [385289275] [2021-11-19 15:02:27,908 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [385289275] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:02:27,908 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:02:27,908 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-19 15:02:27,909 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367461749] [2021-11-19 15:02:27,909 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:02:27,909 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 15:02:27,909 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:02:27,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 15:02:27,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-19 15:02:27,911 INFO L87 Difference]: Start difference. First operand 33 states and 40 transitions. Second operand has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:02:30,359 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 15:02:32,363 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 15:02:34,577 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.21s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-19 15:02:37,315 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.22s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-19 15:02:39,625 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.31s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-19 15:02:41,885 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.26s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-19 15:02:44,169 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.28s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-19 15:02:46,475 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.31s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-19 15:02:46,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:02:46,478 INFO L93 Difference]: Finished difference Result 55 states and 62 transitions. [2021-11-19 15:02:46,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 15:02:46,563 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-11-19 15:02:46,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:02:46,565 INFO L225 Difference]: With dead ends: 55 [2021-11-19 15:02:46,565 INFO L226 Difference]: Without dead ends: 49 [2021-11-19 15:02:46,565 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-11-19 15:02:46,567 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 27 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 2 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 20 IncrementalHoareTripleChecker+Unchecked, 18.4s IncrementalHoareTripleChecker+Time [2021-11-19 15:02:46,568 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27 Valid, 165 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 24 Invalid, 8 Unknown, 20 Unchecked, 18.4s Time] [2021-11-19 15:02:46,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2021-11-19 15:02:46,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 31. [2021-11-19 15:02:46,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.2) internal successors, (36), 30 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:02:46,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 36 transitions. [2021-11-19 15:02:46,574 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 36 transitions. Word has length 12 [2021-11-19 15:02:46,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:02:46,574 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 36 transitions. [2021-11-19 15:02:46,575 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:02:46,575 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 36 transitions. [2021-11-19 15:02:46,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-19 15:02:46,575 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:02:46,576 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:02:46,598 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace35cbe-1611-4b6f-b73d-33a1212ae143/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-19 15:02:46,776 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace35cbe-1611-4b6f-b73d-33a1212ae143/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:02:46,776 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:02:46,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:02:46,777 INFO L85 PathProgramCache]: Analyzing trace with hash -239562945, now seen corresponding path program 1 times [2021-11-19 15:02:46,777 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:02:46,777 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1350440256] [2021-11-19 15:02:46,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:02:46,778 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:02:46,778 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace35cbe-1611-4b6f-b73d-33a1212ae143/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:02:46,779 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace35cbe-1611-4b6f-b73d-33a1212ae143/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:02:46,780 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace35cbe-1611-4b6f-b73d-33a1212ae143/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-19 15:02:47,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:02:47,357 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-19 15:02:47,358 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:02:48,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:02:48,086 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:02:51,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:02:51,853 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:02:51,853 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1350440256] [2021-11-19 15:02:51,853 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1350440256] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:02:51,853 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:02:51,853 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2021-11-19 15:02:51,853 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404049281] [2021-11-19 15:02:51,854 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:02:51,854 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-19 15:02:51,854 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:02:51,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-19 15:02:51,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-11-19 15:02:51,855 INFO L87 Difference]: Start difference. First operand 31 states and 36 transitions. Second operand has 10 states, 10 states have (on average 2.9) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:02:54,313 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 15:02:56,541 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.23s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-19 15:02:59,453 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.23s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-19 15:03:01,456 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-19 15:03:03,464 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-19 15:03:05,472 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-19 15:03:07,453 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.98s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-19 15:03:09,754 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.30s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-19 15:03:11,758 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-19 15:03:13,766 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-19 15:03:15,774 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-19 15:03:17,779 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-19 15:03:19,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:03:19,305 INFO L93 Difference]: Finished difference Result 38 states and 42 transitions. [2021-11-19 15:03:19,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 15:03:19,306 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.9) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-11-19 15:03:19,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:03:19,306 INFO L225 Difference]: With dead ends: 38 [2021-11-19 15:03:19,307 INFO L226 Difference]: Without dead ends: 34 [2021-11-19 15:03:19,307 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2021-11-19 15:03:19,308 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 45 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 2 mSolverCounterUnsat, 11 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 11 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27.3s IncrementalHoareTripleChecker+Time [2021-11-19 15:03:19,309 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [45 Valid, 118 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 44 Invalid, 11 Unknown, 0 Unchecked, 27.3s Time] [2021-11-19 15:03:19,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2021-11-19 15:03:19,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 31. [2021-11-19 15:03:19,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.1666666666666667) internal successors, (35), 30 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:03:19,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2021-11-19 15:03:19,314 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 15 [2021-11-19 15:03:19,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:03:19,314 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2021-11-19 15:03:19,314 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.9) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:03:19,315 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2021-11-19 15:03:19,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-19 15:03:19,315 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:03:19,316 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:03:19,336 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace35cbe-1611-4b6f-b73d-33a1212ae143/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-19 15:03:19,523 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace35cbe-1611-4b6f-b73d-33a1212ae143/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:03:19,524 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:03:19,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:03:19,524 INFO L85 PathProgramCache]: Analyzing trace with hash 1367727609, now seen corresponding path program 1 times [2021-11-19 15:03:19,525 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:03:19,525 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [824237942] [2021-11-19 15:03:19,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:03:19,525 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:03:19,525 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace35cbe-1611-4b6f-b73d-33a1212ae143/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:03:19,526 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace35cbe-1611-4b6f-b73d-33a1212ae143/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:03:19,527 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace35cbe-1611-4b6f-b73d-33a1212ae143/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-19 15:03:20,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:03:20,700 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-19 15:03:20,701 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:03:21,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:03:21,054 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:03:21,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:03:21,418 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:03:21,419 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [824237942] [2021-11-19 15:03:21,419 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [824237942] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:03:21,419 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:03:21,419 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-19 15:03:21,419 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607106904] [2021-11-19 15:03:21,420 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:03:21,420 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 15:03:21,420 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:03:21,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 15:03:21,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-19 15:03:21,421 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand has 8 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:03:23,864 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 15:03:25,870 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 15:03:28,234 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-19 15:03:30,513 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.28s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-19 15:03:32,818 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.30s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-19 15:03:32,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:03:32,820 INFO L93 Difference]: Finished difference Result 48 states and 53 transitions. [2021-11-19 15:03:32,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 15:03:32,910 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-11-19 15:03:32,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:03:32,911 INFO L225 Difference]: With dead ends: 48 [2021-11-19 15:03:32,911 INFO L226 Difference]: Without dead ends: 31 [2021-11-19 15:03:32,912 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-11-19 15:03:32,913 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 5 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 14 IncrementalHoareTripleChecker+Unchecked, 11.3s IncrementalHoareTripleChecker+Time [2021-11-19 15:03:32,914 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 105 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 5 Unknown, 14 Unchecked, 11.3s Time] [2021-11-19 15:03:32,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2021-11-19 15:03:32,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2021-11-19 15:03:32,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.1333333333333333) internal successors, (34), 30 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:03:32,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 34 transitions. [2021-11-19 15:03:32,918 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 34 transitions. Word has length 16 [2021-11-19 15:03:32,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:03:32,918 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 34 transitions. [2021-11-19 15:03:32,919 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:03:32,919 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 34 transitions. [2021-11-19 15:03:32,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-19 15:03:32,919 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:03:32,919 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:03:32,954 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace35cbe-1611-4b6f-b73d-33a1212ae143/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-19 15:03:33,120 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace35cbe-1611-4b6f-b73d-33a1212ae143/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:03:33,121 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:03:33,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:03:33,121 INFO L85 PathProgramCache]: Analyzing trace with hash 1708303706, now seen corresponding path program 1 times [2021-11-19 15:03:33,122 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:03:33,122 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2103637526] [2021-11-19 15:03:33,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:03:33,122 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:03:33,123 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace35cbe-1611-4b6f-b73d-33a1212ae143/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:03:33,123 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace35cbe-1611-4b6f-b73d-33a1212ae143/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:03:33,125 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace35cbe-1611-4b6f-b73d-33a1212ae143/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-19 15:03:34,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:03:34,405 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-19 15:03:34,406 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:03:35,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:03:35,177 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:03:37,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:03:37,938 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:03:37,939 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2103637526] [2021-11-19 15:03:37,939 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2103637526] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:03:37,939 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:03:37,939 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-19 15:03:37,939 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671316401] [2021-11-19 15:03:37,939 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:03:37,940 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 15:03:37,940 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:03:37,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 15:03:37,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-19 15:03:37,941 INFO L87 Difference]: Start difference. First operand 31 states and 34 transitions. Second operand has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:03:40,277 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 15:03:43,274 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-19 15:03:45,576 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.30s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-19 15:03:47,590 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-19 15:03:49,898 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.31s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-19 15:03:51,906 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-19 15:03:53,576 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.47s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-19 15:03:53,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:03:53,644 INFO L93 Difference]: Finished difference Result 50 states and 54 transitions. [2021-11-19 15:03:53,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 15:03:53,654 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-11-19 15:03:53,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:03:53,655 INFO L225 Difference]: With dead ends: 50 [2021-11-19 15:03:53,655 INFO L226 Difference]: Without dead ends: 31 [2021-11-19 15:03:53,656 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-19 15:03:53,657 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 16 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.7s IncrementalHoareTripleChecker+Time [2021-11-19 15:03:53,657 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 67 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 6 Unknown, 0 Unchecked, 15.7s Time] [2021-11-19 15:03:53,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2021-11-19 15:03:53,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 29. [2021-11-19 15:03:53,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 28 states have (on average 1.1071428571428572) internal successors, (31), 28 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:03:53,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 31 transitions. [2021-11-19 15:03:53,663 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 31 transitions. Word has length 17 [2021-11-19 15:03:53,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:03:53,663 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 31 transitions. [2021-11-19 15:03:53,664 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:03:53,664 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 31 transitions. [2021-11-19 15:03:53,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-19 15:03:53,665 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:03:53,665 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:03:53,696 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace35cbe-1611-4b6f-b73d-33a1212ae143/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (8)] Ended with exit code 0 [2021-11-19 15:03:53,870 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace35cbe-1611-4b6f-b73d-33a1212ae143/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:03:53,871 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:03:53,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:03:53,872 INFO L85 PathProgramCache]: Analyzing trace with hash -775977468, now seen corresponding path program 1 times [2021-11-19 15:03:53,872 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:03:53,872 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [152851298] [2021-11-19 15:03:53,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:03:53,873 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:03:53,873 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace35cbe-1611-4b6f-b73d-33a1212ae143/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:03:53,874 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace35cbe-1611-4b6f-b73d-33a1212ae143/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:03:53,875 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace35cbe-1611-4b6f-b73d-33a1212ae143/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-19 15:03:55,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:03:55,150 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-19 15:03:55,151 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:03:55,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:03:55,447 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:03:55,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:03:55,785 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:03:55,786 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [152851298] [2021-11-19 15:03:55,786 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [152851298] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:03:55,786 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:03:55,786 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-19 15:03:55,786 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629419390] [2021-11-19 15:03:55,787 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:03:55,787 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 15:03:55,787 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:03:55,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 15:03:55,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-19 15:03:55,788 INFO L87 Difference]: Start difference. First operand 29 states and 31 transitions. Second operand has 8 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:03:55,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:03:55,917 INFO L93 Difference]: Finished difference Result 29 states and 31 transitions. [2021-11-19 15:03:55,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 15:03:55,917 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-11-19 15:03:55,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:03:55,918 INFO L225 Difference]: With dead ends: 29 [2021-11-19 15:03:55,918 INFO L226 Difference]: Without dead ends: 0 [2021-11-19 15:03:55,919 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-11-19 15:03:55,919 INFO L933 BasicCegarLoop]: 4 mSDtfsCounter, 4 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 6 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 15:03:55,920 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 14 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 6 Unchecked, 0.0s Time] [2021-11-19 15:03:55,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-19 15:03:55,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-19 15:03:55,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:03:55,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-19 15:03:55,921 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2021-11-19 15:03:55,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:03:55,921 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-19 15:03:55,921 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:03:55,922 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-19 15:03:55,922 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-19 15:03:55,924 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-19 15:03:55,958 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace35cbe-1611-4b6f-b73d-33a1212ae143/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-19 15:03:56,126 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace35cbe-1611-4b6f-b73d-33a1212ae143/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:03:56,131 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-11-19 15:03:56,246 INFO L858 garLoopResultBuilder]: For program point L60(lines 60 75) no Hoare annotation was computed. [2021-11-19 15:03:56,246 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-11-19 15:03:56,246 INFO L858 garLoopResultBuilder]: For program point L61(lines 61 70) no Hoare annotation was computed. [2021-11-19 15:03:56,247 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-11-19 15:03:56,247 INFO L858 garLoopResultBuilder]: For program point L61-2(lines 61 70) no Hoare annotation was computed. [2021-11-19 15:03:56,247 INFO L858 garLoopResultBuilder]: For program point L53(lines 53 54) no Hoare annotation was computed. [2021-11-19 15:03:56,247 INFO L858 garLoopResultBuilder]: For program point L86-1(lines 86 90) no Hoare annotation was computed. [2021-11-19 15:03:56,247 INFO L854 garLoopResultBuilder]: At program point L86-2(lines 86 90) the Hoare annotation is: false [2021-11-19 15:03:56,248 INFO L861 garLoopResultBuilder]: At program point L128(lines 113 129) the Hoare annotation is: true [2021-11-19 15:03:56,248 INFO L858 garLoopResultBuilder]: For program point L54(line 54) no Hoare annotation was computed. [2021-11-19 15:03:56,248 INFO L858 garLoopResultBuilder]: For program point L54-2(line 54) no Hoare annotation was computed. [2021-11-19 15:03:56,248 INFO L858 garLoopResultBuilder]: For program point L104(lines 104 108) no Hoare annotation was computed. [2021-11-19 15:03:56,248 INFO L858 garLoopResultBuilder]: For program point L104-1(lines 97 110) no Hoare annotation was computed. [2021-11-19 15:03:56,248 INFO L858 garLoopResultBuilder]: For program point L104-2(lines 104 108) no Hoare annotation was computed. [2021-11-19 15:03:56,248 INFO L858 garLoopResultBuilder]: For program point L55(lines 55 56) no Hoare annotation was computed. [2021-11-19 15:03:56,249 INFO L858 garLoopResultBuilder]: For program point L80(lines 80 83) no Hoare annotation was computed. [2021-11-19 15:03:56,249 INFO L858 garLoopResultBuilder]: For program point L72(lines 72 75) no Hoare annotation was computed. [2021-11-19 15:03:56,249 INFO L858 garLoopResultBuilder]: For program point L72-2(lines 60 75) no Hoare annotation was computed. [2021-11-19 15:03:56,249 INFO L858 garLoopResultBuilder]: For program point L73(lines 73 74) no Hoare annotation was computed. [2021-11-19 15:03:56,249 INFO L858 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-11-19 15:03:56,249 INFO L858 garLoopResultBuilder]: For program point L123(lines 123 126) no Hoare annotation was computed. [2021-11-19 15:03:56,249 INFO L858 garLoopResultBuilder]: For program point L57(lines 57 58) no Hoare annotation was computed. [2021-11-19 15:03:56,250 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 124) no Hoare annotation was computed. [2021-11-19 15:03:56,250 INFO L858 garLoopResultBuilder]: For program point L99-1(lines 99 103) no Hoare annotation was computed. [2021-11-19 15:03:56,250 INFO L854 garLoopResultBuilder]: At program point L99-2(lines 99 103) the Hoare annotation is: false [2021-11-19 15:03:56,250 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-11-19 15:03:56,250 INFO L858 garLoopResultBuilder]: For program point L124(line 124) no Hoare annotation was computed. [2021-11-19 15:03:56,250 INFO L858 garLoopResultBuilder]: For program point L91(lines 91 95) no Hoare annotation was computed. [2021-11-19 15:03:56,251 INFO L858 garLoopResultBuilder]: For program point L91-1(lines 84 97) no Hoare annotation was computed. [2021-11-19 15:03:56,251 INFO L858 garLoopResultBuilder]: For program point L91-2(lines 91 95) no Hoare annotation was computed. [2021-11-19 15:03:56,251 INFO L858 garLoopResultBuilder]: For program point L84(lines 84 110) no Hoare annotation was computed. [2021-11-19 15:03:56,251 INFO L858 garLoopResultBuilder]: For program point L51(lines 51 52) no Hoare annotation was computed. [2021-11-19 15:03:56,251 INFO L854 garLoopResultBuilder]: At program point L109(lines 38 111) the Hoare annotation is: (let ((.cse0 ((_ to_fp 8 24) currentRoundingMode ((_ to_fp 11 53) currentRoundingMode 1.0)))) (and (= ~one_exp~0 .cse0) (= |ULTIMATE.start___ieee754_expf_~x#1| (_ +zero 8 24)) (= (fp.add currentRoundingMode .cse0 (_ +zero 8 24)) |ULTIMATE.start___ieee754_expf_#res#1|) (= currentRoundingMode roundNearestTiesToEven))) [2021-11-19 15:03:56,251 INFO L858 garLoopResultBuilder]: For program point L43-1(lines 43 47) no Hoare annotation was computed. [2021-11-19 15:03:56,251 INFO L854 garLoopResultBuilder]: At program point L43-2(lines 43 47) the Hoare annotation is: (and (= ~one_exp~0 ((_ to_fp 8 24) currentRoundingMode ((_ to_fp 11 53) currentRoundingMode 1.0))) (= ~huge_exp~0 ((_ to_fp 8 24) currentRoundingMode ((_ to_fp 11 53) currentRoundingMode 1000000000000000000000000000000.0))) (= |ULTIMATE.start___ieee754_expf_~x#1| (_ +zero 8 24)) (= currentRoundingMode roundNearestTiesToEven)) [2021-11-19 15:03:56,252 INFO L858 garLoopResultBuilder]: For program point L43-3(lines 43 47) no Hoare annotation was computed. [2021-11-19 15:03:56,266 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:03:56,267 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-19 15:03:56,278 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-11-19 15:03:56,283 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-11-19 15:03:56,289 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-11-19 15:03:56,290 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-11-19 15:03:56,291 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 03:03:56 BoogieIcfgContainer [2021-11-19 15:03:56,291 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-19 15:03:56,292 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-19 15:03:56,292 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-19 15:03:56,292 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-19 15:03:56,293 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 03:01:48" (3/4) ... [2021-11-19 15:03:56,295 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-19 15:03:56,306 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2021-11-19 15:03:56,307 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2021-11-19 15:03:56,307 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-11-19 15:03:56,308 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-19 15:03:56,334 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((one_exp == ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0)) && x == ~Pluszero~LONGDOUBLE()) && ~fp.add~FLOAT(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0)), ~Pluszero~LONGDOUBLE()) == \result) && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven [2021-11-19 15:03:56,367 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace35cbe-1611-4b6f-b73d-33a1212ae143/bin/utaipan-UbGMyvGFUs/witness.graphml [2021-11-19 15:03:56,367 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-19 15:03:56,368 INFO L158 Benchmark]: Toolchain (without parser) took 137056.71ms. Allocated memory was 50.3MB in the beginning and 60.8MB in the end (delta: 10.5MB). Free memory was 24.5MB in the beginning and 28.9MB in the end (delta: -4.5MB). Peak memory consumption was 5.1MB. Max. memory is 16.1GB. [2021-11-19 15:03:56,369 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 50.3MB. Free memory was 30.3MB in the beginning and 30.3MB in the end (delta: 31.9kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 15:03:56,369 INFO L158 Benchmark]: CACSL2BoogieTranslator took 368.09ms. Allocated memory was 50.3MB in the beginning and 60.8MB in the end (delta: 10.5MB). Free memory was 24.3MB in the beginning and 41.1MB in the end (delta: -16.8MB). Peak memory consumption was 3.3MB. Max. memory is 16.1GB. [2021-11-19 15:03:56,370 INFO L158 Benchmark]: Boogie Procedure Inliner took 53.25ms. Allocated memory is still 60.8MB. Free memory was 40.9MB in the beginning and 38.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-19 15:03:56,370 INFO L158 Benchmark]: Boogie Preprocessor took 45.47ms. Allocated memory is still 60.8MB. Free memory was 38.8MB in the beginning and 36.9MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-19 15:03:56,370 INFO L158 Benchmark]: RCFGBuilder took 8621.77ms. Allocated memory is still 60.8MB. Free memory was 36.9MB in the beginning and 36.3MB in the end (delta: 668.6kB). Peak memory consumption was 14.5MB. Max. memory is 16.1GB. [2021-11-19 15:03:56,371 INFO L158 Benchmark]: TraceAbstraction took 127884.05ms. Allocated memory is still 60.8MB. Free memory was 35.8MB in the beginning and 35.2MB in the end (delta: 542.5kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 15:03:56,371 INFO L158 Benchmark]: Witness Printer took 75.67ms. Allocated memory is still 60.8MB. Free memory was 35.2MB in the beginning and 28.9MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-11-19 15:03:56,373 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 50.3MB. Free memory was 30.3MB in the beginning and 30.3MB in the end (delta: 31.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 368.09ms. Allocated memory was 50.3MB in the beginning and 60.8MB in the end (delta: 10.5MB). Free memory was 24.3MB in the beginning and 41.1MB in the end (delta: -16.8MB). Peak memory consumption was 3.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 53.25ms. Allocated memory is still 60.8MB. Free memory was 40.9MB in the beginning and 38.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 45.47ms. Allocated memory is still 60.8MB. Free memory was 38.8MB in the beginning and 36.9MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 8621.77ms. Allocated memory is still 60.8MB. Free memory was 36.9MB in the beginning and 36.3MB in the end (delta: 668.6kB). Peak memory consumption was 14.5MB. Max. memory is 16.1GB. * TraceAbstraction took 127884.05ms. Allocated memory is still 60.8MB. Free memory was 35.8MB in the beginning and 35.2MB in the end (delta: 542.5kB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 75.67ms. Allocated memory is still 60.8MB. Free memory was 35.2MB in the beginning and 28.9MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 124]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 36 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 127.8s, OverallIterations: 8, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 108.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 42 mSolverCounterUnknown, 264 SdHoareTripleChecker+Valid, 107.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 264 mSDsluCounter, 774 SdHoareTripleChecker+Invalid, 104.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 61 IncrementalHoareTripleChecker+Unchecked, 544 mSDsCounter, 9 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 131 IncrementalHoareTripleChecker+Invalid, 243 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 9 mSolverCounterUnsat, 230 mSDtfsCounter, 131 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 205 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 4.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=36occurred in iteration=0, InterpolantAutomatonStates: 42, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 76 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 5 PreInvPairs, 8 NumberOfFragments, 48 HoareAnnotationTreeSize, 5 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 5.8s SatisfiabilityAnalysisTime, 11.4s InterpolantComputationTime, 105 NumberOfCodeBlocks, 105 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 194 ConstructedInterpolants, 19 QuantifiedInterpolants, 1212 SizeOfPredicates, 42 NumberOfNonLiveVariables, 592 ConjunctsInSsa, 55 ConjunctsInUnsatCore, 16 InterpolantComputations, 16 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 38]: Loop Invariant [2021-11-19 15:03:56,383 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-11-19 15:03:56,383 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven Derived loop invariant: ((one_exp == ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0)) && x == ~Pluszero~LONGDOUBLE()) && ~fp.add~FLOAT(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0)), ~Pluszero~LONGDOUBLE()) == \result) && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven - InvariantResult [Line: 99]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 113]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 43]: Loop Invariant [2021-11-19 15:03:56,384 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-11-19 15:03:56,385 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven Derived loop invariant: ((one_exp == ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0)) && huge_exp == ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0E30))) && x == ~Pluszero~LONGDOUBLE()) && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven - InvariantResult [Line: 86]: Loop Invariant Derived loop invariant: 0 RESULT: Ultimate proved your program to be correct! [2021-11-19 15:03:56,519 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace35cbe-1611-4b6f-b73d-33a1212ae143/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE