./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/double_req_bl_1300.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_7782edff-f8d7-4239-af5c-c03bb86103b7/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_7782edff-f8d7-4239-af5c-c03bb86103b7/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_7782edff-f8d7-4239-af5c-c03bb86103b7/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_7782edff-f8d7-4239-af5c-c03bb86103b7/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1300.c -s /tmp/vcloud-vcloud-master/worker/run_dir_7782edff-f8d7-4239-af5c-c03bb86103b7/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_7782edff-f8d7-4239-af5c-c03bb86103b7/bin/utaipan --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 6775086e1d92d324fce714cac739cb50ade22067 ........................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_7782edff-f8d7-4239-af5c-c03bb86103b7/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_7782edff-f8d7-4239-af5c-c03bb86103b7/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_7782edff-f8d7-4239-af5c-c03bb86103b7/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_7782edff-f8d7-4239-af5c-c03bb86103b7/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1300.c -s /tmp/vcloud-vcloud-master/worker/run_dir_7782edff-f8d7-4239-af5c-c03bb86103b7/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_7782edff-f8d7-4239-af5c-c03bb86103b7/bin/utaipan --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 6775086e1d92d324fce714cac739cb50ade22067 .............................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-28 07:42:42,373 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 07:42:42,375 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 07:42:42,435 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 07:42:42,437 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 07:42:42,441 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 07:42:42,443 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 07:42:42,445 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 07:42:42,447 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 07:42:42,448 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 07:42:42,449 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 07:42:42,451 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 07:42:42,451 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 07:42:42,453 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 07:42:42,454 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 07:42:42,455 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 07:42:42,456 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 07:42:42,458 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 07:42:42,460 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 07:42:42,462 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 07:42:42,464 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 07:42:42,465 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 07:42:42,467 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 07:42:42,468 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 07:42:42,471 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 07:42:42,472 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 07:42:42,472 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 07:42:42,476 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 07:42:42,476 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 07:42:42,478 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 07:42:42,478 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 07:42:42,479 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 07:42:42,480 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 07:42:42,481 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 07:42:42,482 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 07:42:42,482 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 07:42:42,483 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 07:42:42,484 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 07:42:42,484 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 07:42:42,485 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 07:42:42,486 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 07:42:42,492 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_7782edff-f8d7-4239-af5c-c03bb86103b7/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-28 07:42:42,536 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 07:42:42,537 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 07:42:42,538 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-28 07:42:42,538 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-28 07:42:42,539 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-28 07:42:42,539 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-28 07:42:42,539 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-28 07:42:42,539 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-28 07:42:42,539 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-28 07:42:42,540 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-28 07:42:42,541 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-28 07:42:42,541 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-28 07:42:42,541 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-28 07:42:42,542 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-28 07:42:42,542 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-28 07:42:42,542 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 07:42:42,543 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 07:42:42,543 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 07:42:42,543 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 07:42:42,543 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 07:42:42,543 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 07:42:42,544 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 07:42:42,544 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 07:42:42,544 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-28 07:42:42,544 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 07:42:42,544 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 07:42:42,545 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 07:42:42,545 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 07:42:42,545 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 07:42:42,547 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 07:42:42,547 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 07:42:42,547 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 07:42:42,548 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 07:42:42,548 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 07:42:42,548 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 07:42:42,548 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-28 07:42:42,549 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 07:42:42,549 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 07:42:42,549 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 07:42:42,549 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-28 07:42:42,549 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-vcloud-master/worker/run_dir_7782edff-f8d7-4239-af5c-c03bb86103b7/bin/utaipan/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_7782edff-f8d7-4239-af5c-c03bb86103b7/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6775086e1d92d324fce714cac739cb50ade22067 [2020-11-28 07:42:42,810 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 07:42:42,843 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 07:42:42,846 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 07:42:42,847 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 07:42:42,847 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 07:42:42,848 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_7782edff-f8d7-4239-af5c-c03bb86103b7/bin/utaipan/../../sv-benchmarks/c/float-newlib/double_req_bl_1300.c [2020-11-28 07:42:42,936 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_7782edff-f8d7-4239-af5c-c03bb86103b7/bin/utaipan/data/e305b4586/a9612f7cec5e42f3a8f37af0cd37c5ba/FLAG0b39eef22 [2020-11-28 07:42:43,338 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 07:42:43,338 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_7782edff-f8d7-4239-af5c-c03bb86103b7/sv-benchmarks/c/float-newlib/double_req_bl_1300.c [2020-11-28 07:42:43,349 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_7782edff-f8d7-4239-af5c-c03bb86103b7/bin/utaipan/data/e305b4586/a9612f7cec5e42f3a8f37af0cd37c5ba/FLAG0b39eef22 [2020-11-28 07:42:43,746 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_7782edff-f8d7-4239-af5c-c03bb86103b7/bin/utaipan/data/e305b4586/a9612f7cec5e42f3a8f37af0cd37c5ba [2020-11-28 07:42:43,749 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 07:42:43,750 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 07:42:43,752 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 07:42:43,752 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 07:42:43,758 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 07:42:43,759 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:42:43" (1/1) ... [2020-11-28 07:42:43,761 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39f73d9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:43, skipping insertion in model container [2020-11-28 07:42:43,761 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:42:43" (1/1) ... [2020-11-28 07:42:43,767 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 07:42:43,782 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 07:42:43,990 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:42:43,999 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 07:42:44,020 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:42:44,034 INFO L208 MainTranslator]: Completed translation [2020-11-28 07:42:44,035 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:44 WrapperNode [2020-11-28 07:42:44,035 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 07:42:44,036 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 07:42:44,036 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 07:42:44,036 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 07:42:44,044 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:44" (1/1) ... [2020-11-28 07:42:44,052 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:44" (1/1) ... [2020-11-28 07:42:44,074 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 07:42:44,075 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 07:42:44,075 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 07:42:44,075 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 07:42:44,083 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:44" (1/1) ... [2020-11-28 07:42:44,084 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:44" (1/1) ... [2020-11-28 07:42:44,086 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:44" (1/1) ... [2020-11-28 07:42:44,087 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:44" (1/1) ... [2020-11-28 07:42:44,094 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:44" (1/1) ... [2020-11-28 07:42:44,098 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:44" (1/1) ... [2020-11-28 07:42:44,100 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:44" (1/1) ... [2020-11-28 07:42:44,102 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 07:42:44,103 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 07:42:44,103 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 07:42:44,103 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 07:42:44,108 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:44" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7782edff-f8d7-4239-af5c-c03bb86103b7/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 07:42:44,162 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 07:42:44,162 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 07:42:44,162 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-11-28 07:42:44,162 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 07:42:44,162 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 07:42:44,162 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-28 07:42:44,162 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-28 07:42:44,640 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 07:42:44,640 INFO L298 CfgBuilder]: Removed 16 assume(true) statements. [2020-11-28 07:42:44,642 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:42:44 BoogieIcfgContainer [2020-11-28 07:42:44,642 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 07:42:44,644 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 07:42:44,644 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 07:42:44,648 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 07:42:44,649 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 07:42:43" (1/3) ... [2020-11-28 07:42:44,649 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41f622db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:42:44, skipping insertion in model container [2020-11-28 07:42:44,650 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:44" (2/3) ... [2020-11-28 07:42:44,650 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41f622db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:42:44, skipping insertion in model container [2020-11-28 07:42:44,650 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:42:44" (3/3) ... [2020-11-28 07:42:44,652 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1300.c [2020-11-28 07:42:44,662 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 07:42:44,666 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-28 07:42:44,675 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-28 07:42:44,717 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 07:42:44,717 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 07:42:44,718 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 07:42:44,718 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 07:42:44,718 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 07:42:44,719 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 07:42:44,719 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 07:42:44,719 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 07:42:44,735 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states. [2020-11-28 07:42:44,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-28 07:42:44,741 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:42:44,741 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:42:44,742 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:42:44,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:42:44,751 INFO L82 PathProgramCache]: Analyzing trace with hash 279830146, now seen corresponding path program 1 times [2020-11-28 07:42:44,769 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:42:44,770 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877757926] [2020-11-28 07:42:44,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:42:44,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:42:44,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:42:44,940 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877757926] [2020-11-28 07:42:44,941 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:42:44,941 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:42:44,942 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158758282] [2020-11-28 07:42:44,947 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-28 07:42:44,948 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:42:44,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-28 07:42:44,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-28 07:42:44,970 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 2 states. [2020-11-28 07:42:44,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:42:44,983 INFO L93 Difference]: Finished difference Result 27 states and 37 transitions. [2020-11-28 07:42:44,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-28 07:42:44,985 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-11-28 07:42:44,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:42:44,993 INFO L225 Difference]: With dead ends: 27 [2020-11-28 07:42:44,993 INFO L226 Difference]: Without dead ends: 11 [2020-11-28 07:42:44,996 INFO L677 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 [2020-11-28 07:42:45,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2020-11-28 07:42:45,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2020-11-28 07:42:45,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-11-28 07:42:45,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 10 transitions. [2020-11-28 07:42:45,027 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 10 transitions. Word has length 8 [2020-11-28 07:42:45,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:42:45,027 INFO L481 AbstractCegarLoop]: Abstraction has 11 states and 10 transitions. [2020-11-28 07:42:45,027 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-28 07:42:45,028 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 10 transitions. [2020-11-28 07:42:45,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-28 07:42:45,029 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:42:45,029 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:42:45,029 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 07:42:45,033 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:42:45,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:42:45,035 INFO L82 PathProgramCache]: Analyzing trace with hash 1751055458, now seen corresponding path program 1 times [2020-11-28 07:42:45,035 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:42:45,036 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378719409] [2020-11-28 07:42:45,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:42:45,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 07:42:45,171 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 07:42:45,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 07:42:45,314 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 07:42:45,356 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2020-11-28 07:42:45,357 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-28 07:42:45,360 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-28 07:42:45,394 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 07:42:45 BoogieIcfgContainer [2020-11-28 07:42:45,395 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 07:42:45,397 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 07:42:45,398 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 07:42:45,398 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 07:42:45,399 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:42:44" (3/4) ... [2020-11-28 07:42:45,401 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-28 07:42:45,402 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 07:42:45,406 INFO L168 Benchmark]: Toolchain (without parser) took 1652.41 ms. Allocated memory was 109.1 MB in the beginning and 132.1 MB in the end (delta: 23.1 MB). Free memory was 82.0 MB in the beginning and 85.3 MB in the end (delta: -3.3 MB). Peak memory consumption was 21.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:42:45,408 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 109.1 MB. Free memory is still 67.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:42:45,409 INFO L168 Benchmark]: CACSL2BoogieTranslator took 283.94 ms. Allocated memory is still 109.1 MB. Free memory was 82.0 MB in the beginning and 83.9 MB in the end (delta: -1.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-28 07:42:45,410 INFO L168 Benchmark]: Boogie Procedure Inliner took 37.99 ms. Allocated memory is still 109.1 MB. Free memory was 83.9 MB in the beginning and 82.1 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:42:45,410 INFO L168 Benchmark]: Boogie Preprocessor took 27.76 ms. Allocated memory is still 109.1 MB. Free memory was 82.1 MB in the beginning and 80.6 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:42:45,412 INFO L168 Benchmark]: RCFGBuilder took 539.42 ms. Allocated memory is still 109.1 MB. Free memory was 80.6 MB in the beginning and 57.7 MB in the end (delta: 22.9 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:42:45,413 INFO L168 Benchmark]: TraceAbstraction took 751.82 ms. Allocated memory was 109.1 MB in the beginning and 132.1 MB in the end (delta: 23.1 MB). Free memory was 57.3 MB in the beginning and 85.3 MB in the end (delta: -28.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:42:45,413 INFO L168 Benchmark]: Witness Printer took 4.16 ms. Allocated memory is still 132.1 MB. Free memory is still 85.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:42:45,422 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 109.1 MB. Free memory is still 67.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 283.94 ms. Allocated memory is still 109.1 MB. Free memory was 82.0 MB in the beginning and 83.9 MB in the end (delta: -1.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 37.99 ms. Allocated memory is still 109.1 MB. Free memory was 83.9 MB in the beginning and 82.1 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 27.76 ms. Allocated memory is still 109.1 MB. Free memory was 82.1 MB in the beginning and 80.6 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 539.42 ms. Allocated memory is still 109.1 MB. Free memory was 80.6 MB in the beginning and 57.7 MB in the end (delta: 22.9 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 751.82 ms. Allocated memory was 109.1 MB in the beginning and 132.1 MB in the end (delta: 23.1 MB). Free memory was 57.3 MB in the beginning and 85.3 MB in the end (delta: -28.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 4.16 ms. Allocated memory is still 132.1 MB. Free memory is still 85.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseOr at line 27, overapproximation of bitwiseAnd at line 42, overapproximation of someBinaryDOUBLEComparisonOperation at line 60, overapproximation of to_real at line 57. Possible FailurePath: [L52] double x = __VERIFIER_nondet_double(); [L19] __int32_t hx, lx; [L21] ieee_double_shape_type ew_u; [L22] ew_u.value = (x) [L23] EXPR ew_u.parts.msw [L23] (hx) = ew_u.parts.msw [L24] EXPR ew_u.parts.lsw [L24] (lx) = ew_u.parts.lsw [L26] hx &= 0x7fffffff [L27] hx |= (__uint32_t)(lx | (-lx)) >> 31 [L28] hx = 0x7ff00000 - hx [L29] return 1 - (int)((__uint32_t)(hx | (-hx)) >> 31); [L55] !isinf_double(x) && !isnan_double(x) [L33] return x != x; [L55] !isinf_double(x) && !isnan_double(x) [L55] COND TRUE !isinf_double(x) && !isnan_double(x) [L36] __int32_t hx; [L38] ieee_double_shape_type gh_u; [L39] gh_u.value = (x) [L40] EXPR gh_u.parts.msw [L40] (hx) = gh_u.parts.msw [L42] return (int)((__uint32_t)((hx & 0x7fffffff) - 0x7ff00000) >> 31); [L57] double res = isfinite_double(x); [L60] COND TRUE res == 0.0 [L3] __assert_fail("0", "double_req_bl_1300.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 14 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.6s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 14 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, 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=14occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 18 NumberOfCodeBlocks, 18 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 7 ConstructedInterpolants, 0 QuantifiedInterpolants, 49 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 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.0-a4ecdab [2020-11-28 07:42:47,837 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 07:42:47,839 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 07:42:47,870 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 07:42:47,871 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 07:42:47,872 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 07:42:47,874 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 07:42:47,877 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 07:42:47,879 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 07:42:47,880 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 07:42:47,882 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 07:42:47,883 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 07:42:47,884 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 07:42:47,885 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 07:42:47,886 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 07:42:47,888 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 07:42:47,889 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 07:42:47,890 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 07:42:47,892 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 07:42:47,895 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 07:42:47,897 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 07:42:47,898 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 07:42:47,900 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 07:42:47,901 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 07:42:47,904 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 07:42:47,905 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 07:42:47,905 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 07:42:47,906 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 07:42:47,907 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 07:42:47,908 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 07:42:47,909 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 07:42:47,910 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 07:42:47,911 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 07:42:47,912 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 07:42:47,913 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 07:42:47,914 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 07:42:47,915 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 07:42:47,915 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 07:42:47,916 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 07:42:47,917 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 07:42:47,918 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 07:42:47,919 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_7782edff-f8d7-4239-af5c-c03bb86103b7/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2020-11-28 07:42:47,958 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 07:42:47,959 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 07:42:47,960 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-28 07:42:47,960 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-28 07:42:47,961 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-28 07:42:47,961 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-28 07:42:47,962 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-28 07:42:47,962 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-28 07:42:47,962 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-28 07:42:47,963 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 07:42:47,963 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 07:42:47,964 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 07:42:47,964 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 07:42:47,964 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 07:42:47,965 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 07:42:47,966 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 07:42:47,967 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-28 07:42:47,967 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-11-28 07:42:47,967 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-11-28 07:42:47,968 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 07:42:47,968 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 07:42:47,968 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 07:42:47,968 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 07:42:47,969 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 07:42:47,969 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 07:42:47,969 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 07:42:47,970 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 07:42:47,970 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 07:42:47,970 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 07:42:47,971 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 07:42:47,971 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 07:42:47,971 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2020-11-28 07:42:47,971 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-11-28 07:42:47,972 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 07:42:47,972 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 07:42:47,973 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-28 07:42:47,973 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-vcloud-master/worker/run_dir_7782edff-f8d7-4239-af5c-c03bb86103b7/bin/utaipan/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_7782edff-f8d7-4239-af5c-c03bb86103b7/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6775086e1d92d324fce714cac739cb50ade22067 [2020-11-28 07:42:48,389 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 07:42:48,418 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 07:42:48,421 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 07:42:48,422 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 07:42:48,422 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 07:42:48,423 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_7782edff-f8d7-4239-af5c-c03bb86103b7/bin/utaipan/../../sv-benchmarks/c/float-newlib/double_req_bl_1300.c [2020-11-28 07:42:48,498 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_7782edff-f8d7-4239-af5c-c03bb86103b7/bin/utaipan/data/adf555b5d/20861f0adc0d4118bced1e9994909eb9/FLAG1776f26c7 [2020-11-28 07:42:49,023 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 07:42:49,024 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_7782edff-f8d7-4239-af5c-c03bb86103b7/sv-benchmarks/c/float-newlib/double_req_bl_1300.c [2020-11-28 07:42:49,031 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_7782edff-f8d7-4239-af5c-c03bb86103b7/bin/utaipan/data/adf555b5d/20861f0adc0d4118bced1e9994909eb9/FLAG1776f26c7 [2020-11-28 07:42:49,378 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_7782edff-f8d7-4239-af5c-c03bb86103b7/bin/utaipan/data/adf555b5d/20861f0adc0d4118bced1e9994909eb9 [2020-11-28 07:42:49,381 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 07:42:49,382 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 07:42:49,384 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 07:42:49,384 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 07:42:49,387 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 07:42:49,388 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:42:49" (1/1) ... [2020-11-28 07:42:49,390 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b2637d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:49, skipping insertion in model container [2020-11-28 07:42:49,390 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:42:49" (1/1) ... [2020-11-28 07:42:49,397 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 07:42:49,411 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 07:42:49,632 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:42:49,650 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 07:42:49,696 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:42:49,722 INFO L208 MainTranslator]: Completed translation [2020-11-28 07:42:49,723 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:49 WrapperNode [2020-11-28 07:42:49,723 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 07:42:49,724 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 07:42:49,724 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 07:42:49,724 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 07:42:49,731 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:49" (1/1) ... [2020-11-28 07:42:49,744 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:49" (1/1) ... [2020-11-28 07:42:49,778 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 07:42:49,780 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 07:42:49,780 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 07:42:49,780 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 07:42:49,788 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:49" (1/1) ... [2020-11-28 07:42:49,789 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:49" (1/1) ... [2020-11-28 07:42:49,793 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:49" (1/1) ... [2020-11-28 07:42:49,793 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:49" (1/1) ... [2020-11-28 07:42:49,801 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:49" (1/1) ... [2020-11-28 07:42:49,805 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:49" (1/1) ... [2020-11-28 07:42:49,807 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:49" (1/1) ... [2020-11-28 07:42:49,810 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 07:42:49,816 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 07:42:49,817 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 07:42:49,817 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 07:42:49,818 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:49" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7782edff-f8d7-4239-af5c-c03bb86103b7/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 07:42:49,876 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2020-11-28 07:42:49,882 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-11-28 07:42:49,883 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 07:42:49,883 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-11-28 07:42:49,884 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 07:42:49,884 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 07:42:49,885 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-28 07:42:50,381 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 07:42:50,382 INFO L298 CfgBuilder]: Removed 16 assume(true) statements. [2020-11-28 07:42:50,383 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:42:50 BoogieIcfgContainer [2020-11-28 07:42:50,384 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 07:42:50,386 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 07:42:50,387 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 07:42:50,389 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 07:42:50,390 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 07:42:49" (1/3) ... [2020-11-28 07:42:50,390 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5255cf86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:42:50, skipping insertion in model container [2020-11-28 07:42:50,391 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:49" (2/3) ... [2020-11-28 07:42:50,391 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5255cf86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:42:50, skipping insertion in model container [2020-11-28 07:42:50,391 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:42:50" (3/3) ... [2020-11-28 07:42:50,393 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1300.c [2020-11-28 07:42:50,402 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 07:42:50,408 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-28 07:42:50,424 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-28 07:42:50,445 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 07:42:50,445 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 07:42:50,445 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 07:42:50,445 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 07:42:50,445 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 07:42:50,445 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 07:42:50,445 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 07:42:50,446 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 07:42:50,458 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2020-11-28 07:42:50,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-28 07:42:50,463 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:42:50,463 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:42:50,464 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:42:50,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:42:50,469 INFO L82 PathProgramCache]: Analyzing trace with hash 1033094394, now seen corresponding path program 1 times [2020-11-28 07:42:50,481 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-28 07:42:50,481 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [8498055] [2020-11-28 07:42:50,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7782edff-f8d7-4239-af5c-c03bb86103b7/bin/utaipan/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-11-28 07:42:50,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:42:50,585 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 1 conjunts are in the unsatisfiable core [2020-11-28 07:42:50,590 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:42:50,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:42:50,605 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:42:50,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:42:50,611 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [8498055] [2020-11-28 07:42:50,611 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:42:50,612 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-11-28 07:42:50,612 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571924228] [2020-11-28 07:42:50,616 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-28 07:42:50,617 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-28 07:42:50,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-28 07:42:50,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-28 07:42:50,632 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 2 states. [2020-11-28 07:42:50,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:42:50,647 INFO L93 Difference]: Finished difference Result 39 states and 51 transitions. [2020-11-28 07:42:50,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-28 07:42:50,649 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 12 [2020-11-28 07:42:50,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:42:50,656 INFO L225 Difference]: With dead ends: 39 [2020-11-28 07:42:50,657 INFO L226 Difference]: Without dead ends: 16 [2020-11-28 07:42:50,659 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-28 07:42:50,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-11-28 07:42:50,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-11-28 07:42:50,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-11-28 07:42:50,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2020-11-28 07:42:50,686 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 12 [2020-11-28 07:42:50,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:42:50,686 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2020-11-28 07:42:50,686 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-28 07:42:50,687 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2020-11-28 07:42:50,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-28 07:42:50,687 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:42:50,687 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:42:50,904 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-11-28 07:42:50,904 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:42:50,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:42:50,905 INFO L82 PathProgramCache]: Analyzing trace with hash 499625812, now seen corresponding path program 1 times [2020-11-28 07:42:50,909 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-28 07:42:50,909 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2018763193] [2020-11-28 07:42:50,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7782edff-f8d7-4239-af5c-c03bb86103b7/bin/utaipan/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-11-28 07:42:51,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:42:51,057 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 07:42:51,059 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:42:51,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:42:51,101 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:42:51,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:42:51,105 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2018763193] [2020-11-28 07:42:51,105 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:42:51,106 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2020-11-28 07:42:51,106 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765111070] [2020-11-28 07:42:51,107 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:42:51,107 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-28 07:42:51,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:42:51,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:42:51,109 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 3 states. [2020-11-28 07:42:51,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:42:51,132 INFO L93 Difference]: Finished difference Result 24 states and 23 transitions. [2020-11-28 07:42:51,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:42:51,135 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2020-11-28 07:42:51,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:42:51,136 INFO L225 Difference]: With dead ends: 24 [2020-11-28 07:42:51,136 INFO L226 Difference]: Without dead ends: 16 [2020-11-28 07:42:51,137 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:42:51,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-11-28 07:42:51,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-11-28 07:42:51,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-11-28 07:42:51,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 15 transitions. [2020-11-28 07:42:51,140 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 15 transitions. Word has length 14 [2020-11-28 07:42:51,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:42:51,140 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 15 transitions. [2020-11-28 07:42:51,140 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:42:51,141 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 15 transitions. [2020-11-28 07:42:51,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-28 07:42:51,144 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:42:51,145 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:42:51,357 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-11-28 07:42:51,357 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:42:51,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:42:51,358 INFO L82 PathProgramCache]: Analyzing trace with hash 2210040, now seen corresponding path program 1 times [2020-11-28 07:42:51,359 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-28 07:42:51,359 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1452480170] [2020-11-28 07:42:51,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7782edff-f8d7-4239-af5c-c03bb86103b7/bin/utaipan/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2020-11-28 07:42:51,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 07:42:51,522 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 07:42:51,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 07:42:51,639 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 07:42:51,683 INFO L173 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2020-11-28 07:42:51,684 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-28 07:42:51,884 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-11-28 07:42:51,910 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 07:42:51 BoogieIcfgContainer [2020-11-28 07:42:51,910 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 07:42:51,911 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 07:42:51,911 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 07:42:51,911 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 07:42:51,912 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:42:50" (3/4) ... [2020-11-28 07:42:51,914 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-28 07:42:51,972 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_7782edff-f8d7-4239-af5c-c03bb86103b7/bin/utaipan/witness.graphml [2020-11-28 07:42:51,972 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 07:42:51,980 INFO L168 Benchmark]: Toolchain (without parser) took 2596.93 ms. Allocated memory was 50.3 MB in the beginning and 77.6 MB in the end (delta: 27.3 MB). Free memory was 27.8 MB in the beginning and 44.1 MB in the end (delta: -16.2 MB). Peak memory consumption was 11.9 MB. Max. memory is 16.1 GB. [2020-11-28 07:42:51,981 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 50.3 MB. Free memory was 32.7 MB in the beginning and 32.6 MB in the end (delta: 38.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:42:51,983 INFO L168 Benchmark]: CACSL2BoogieTranslator took 339.70 ms. Allocated memory is still 50.3 MB. Free memory was 27.7 MB in the beginning and 28.7 MB in the end (delta: -1.0 MB). Peak memory consumption was 7.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:42:51,986 INFO L168 Benchmark]: Boogie Procedure Inliner took 54.60 ms. Allocated memory is still 50.3 MB. Free memory was 28.7 MB in the beginning and 27.1 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:42:51,987 INFO L168 Benchmark]: Boogie Preprocessor took 35.70 ms. Allocated memory is still 50.3 MB. Free memory was 27.1 MB in the beginning and 25.6 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:42:51,987 INFO L168 Benchmark]: RCFGBuilder took 567.40 ms. Allocated memory was 50.3 MB in the beginning and 77.6 MB in the end (delta: 27.3 MB). Free memory was 25.6 MB in the beginning and 47.7 MB in the end (delta: -22.1 MB). Peak memory consumption was 5.4 MB. Max. memory is 16.1 GB. [2020-11-28 07:42:51,988 INFO L168 Benchmark]: TraceAbstraction took 1523.97 ms. Allocated memory is still 77.6 MB. Free memory was 47.4 MB in the beginning and 46.6 MB in the end (delta: 752.0 kB). Peak memory consumption was 1.5 MB. Max. memory is 16.1 GB. [2020-11-28 07:42:51,988 INFO L168 Benchmark]: Witness Printer took 67.34 ms. Allocated memory is still 77.6 MB. Free memory was 46.6 MB in the beginning and 44.1 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:42:51,991 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 50.3 MB. Free memory was 32.7 MB in the beginning and 32.6 MB in the end (delta: 38.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 339.70 ms. Allocated memory is still 50.3 MB. Free memory was 27.7 MB in the beginning and 28.7 MB in the end (delta: -1.0 MB). Peak memory consumption was 7.1 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 54.60 ms. Allocated memory is still 50.3 MB. Free memory was 28.7 MB in the beginning and 27.1 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 35.70 ms. Allocated memory is still 50.3 MB. Free memory was 27.1 MB in the beginning and 25.6 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 567.40 ms. Allocated memory was 50.3 MB in the beginning and 77.6 MB in the end (delta: 27.3 MB). Free memory was 25.6 MB in the beginning and 47.7 MB in the end (delta: -22.1 MB). Peak memory consumption was 5.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1523.97 ms. Allocated memory is still 77.6 MB. Free memory was 47.4 MB in the beginning and 46.6 MB in the end (delta: 752.0 kB). Peak memory consumption was 1.5 MB. Max. memory is 16.1 GB. * Witness Printer took 67.34 ms. Allocated memory is still 77.6 MB. Free memory was 46.6 MB in the beginning and 44.1 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 3]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L52] double x = __VERIFIER_nondet_double(); [L19] __int32_t hx, lx; [L21] ieee_double_shape_type ew_u; [L22] ew_u.value = (x) [L23] EXPR ew_u.parts.msw [L23] (hx) = ew_u.parts.msw [L24] EXPR ew_u.parts.lsw [L24] (lx) = ew_u.parts.lsw [L26] hx &= 0x7fffffff [L27] hx |= (__uint32_t)(lx | (-lx)) >> 31 [L28] hx = 0x7ff00000 - hx [L29] return 1 - (int)((__uint32_t)(hx | (-hx)) >> 31); [L55] !isinf_double(x) && !isnan_double(x) [L33] return x != x; [L55] !isinf_double(x) && !isnan_double(x) [L55] COND TRUE !isinf_double(x) && !isnan_double(x) [L36] __int32_t hx; [L38] ieee_double_shape_type gh_u; [L39] gh_u.value = (x) [L40] EXPR gh_u.parts.msw [L40] (hx) = gh_u.parts.msw [L42] return (int)((__uint32_t)((hx & 0x7fffffff) - 0x7ff00000) >> 31); [L57] double res = isfinite_double(x); [L60] COND TRUE res == 0.0 [L3] __assert_fail("0", "double_req_bl_1300.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 21 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.4s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 37 SDtfs, 0 SDslu, 10 SDs, 0 SdLazy, 5 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 48 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred in iteration=0, 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 41 NumberOfCodeBlocks, 41 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 48 ConstructedInterpolants, 0 QuantifiedInterpolants, 606 SizeOfPredicates, 0 NumberOfNonLiveVariables, 101 ConjunctsInSsa, 3 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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 proved your program to be incorrect! Received shutdown request...