./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_1232a_true-unreach-call.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 1dbac8bc Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_5a696e3a-45b7-4509-80f4-5dcc0347adb4/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_5a696e3a-45b7-4509-80f4-5dcc0347adb4/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_5a696e3a-45b7-4509-80f4-5dcc0347adb4/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_5a696e3a-45b7-4509-80f4-5dcc0347adb4/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1232a_true-unreach-call.c -s /tmp/vcloud-vcloud-master/worker/working_dir_5a696e3a-45b7-4509-80f4-5dcc0347adb4/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_5a696e3a-45b7-4509-80f4-5dcc0347adb4/bin-2019/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash cd0c8f7b91fa815011541d5ffb41102d34132ba8 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_5a696e3a-45b7-4509-80f4-5dcc0347adb4/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_5a696e3a-45b7-4509-80f4-5dcc0347adb4/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_5a696e3a-45b7-4509-80f4-5dcc0347adb4/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_5a696e3a-45b7-4509-80f4-5dcc0347adb4/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1232a_true-unreach-call.c -s /tmp/vcloud-vcloud-master/worker/working_dir_5a696e3a-45b7-4509-80f4-5dcc0347adb4/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_5a696e3a-45b7-4509-80f4-5dcc0347adb4/bin-2019/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash cd0c8f7b91fa815011541d5ffb41102d34132ba8 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-1dbac8b [2018-11-10 03:53:05,328 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-10 03:53:05,329 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-10 03:53:05,339 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-10 03:53:05,339 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-10 03:53:05,340 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-10 03:53:05,341 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-10 03:53:05,343 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-10 03:53:05,344 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-10 03:53:05,345 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-10 03:53:05,345 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-10 03:53:05,345 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-10 03:53:05,346 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-10 03:53:05,347 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-10 03:53:05,348 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-10 03:53:05,348 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-10 03:53:05,349 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-10 03:53:05,350 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-10 03:53:05,352 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-10 03:53:05,353 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-10 03:53:05,354 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-10 03:53:05,355 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-10 03:53:05,356 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-10 03:53:05,357 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-10 03:53:05,357 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-10 03:53:05,358 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-10 03:53:05,358 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-10 03:53:05,359 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-10 03:53:05,360 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-10 03:53:05,360 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-10 03:53:05,361 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-10 03:53:05,361 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-10 03:53:05,361 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-10 03:53:05,361 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-10 03:53:05,362 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-10 03:53:05,363 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-10 03:53:05,363 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_5a696e3a-45b7-4509-80f4-5dcc0347adb4/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-11-10 03:53:05,374 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-10 03:53:05,374 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-10 03:53:05,375 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-10 03:53:05,375 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-10 03:53:05,375 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-10 03:53:05,375 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-10 03:53:05,375 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-10 03:53:05,375 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-10 03:53:05,375 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-10 03:53:05,376 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-10 03:53:05,376 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-10 03:53:05,376 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-10 03:53:05,376 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-10 03:53:05,377 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-10 03:53:05,377 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-10 03:53:05,377 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-10 03:53:05,377 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-10 03:53:05,377 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-10 03:53:05,377 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-10 03:53:05,377 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-10 03:53:05,378 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-10 03:53:05,378 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-10 03:53:05,378 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-10 03:53:05,378 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-10 03:53:05,378 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-10 03:53:05,378 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-10 03:53:05,378 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-10 03:53:05,379 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-10 03:53:05,379 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-10 03:53:05,379 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-10 03:53:05,379 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-10 03:53:05,379 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-10 03:53:05,379 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-10 03:53:05,379 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-10 03:53:05,380 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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/working_dir_5a696e3a-45b7-4509-80f4-5dcc0347adb4/bin-2019/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(__VERIFIER_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 -> cd0c8f7b91fa815011541d5ffb41102d34132ba8 [2018-11-10 03:53:05,406 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-10 03:53:05,416 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-10 03:53:05,419 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-10 03:53:05,421 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-10 03:53:05,421 INFO L276 PluginConnector]: CDTParser initialized [2018-11-10 03:53:05,422 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_5a696e3a-45b7-4509-80f4-5dcc0347adb4/bin-2019/utaipan/../../sv-benchmarks/c/float-newlib/float_req_bl_1232a_true-unreach-call.c [2018-11-10 03:53:05,473 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_5a696e3a-45b7-4509-80f4-5dcc0347adb4/bin-2019/utaipan/data/1bee4ba57/c917e7fd1e8f48b59526bbca2ef94989/FLAG78d9245be [2018-11-10 03:53:05,819 INFO L298 CDTParser]: Found 1 translation units. [2018-11-10 03:53:05,820 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_5a696e3a-45b7-4509-80f4-5dcc0347adb4/sv-benchmarks/c/float-newlib/float_req_bl_1232a_true-unreach-call.c [2018-11-10 03:53:05,825 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_5a696e3a-45b7-4509-80f4-5dcc0347adb4/bin-2019/utaipan/data/1bee4ba57/c917e7fd1e8f48b59526bbca2ef94989/FLAG78d9245be [2018-11-10 03:53:05,834 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_5a696e3a-45b7-4509-80f4-5dcc0347adb4/bin-2019/utaipan/data/1bee4ba57/c917e7fd1e8f48b59526bbca2ef94989 [2018-11-10 03:53:05,837 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-10 03:53:05,838 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-10 03:53:05,839 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-10 03:53:05,839 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-10 03:53:05,843 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-10 03:53:05,844 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 03:53:05" (1/1) ... [2018-11-10 03:53:05,846 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f7b0522 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:53:05, skipping insertion in model container [2018-11-10 03:53:05,846 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 03:53:05" (1/1) ... [2018-11-10 03:53:05,855 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-10 03:53:05,871 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-10 03:53:06,004 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 03:53:06,006 INFO L189 MainTranslator]: Completed pre-run [2018-11-10 03:53:06,020 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 03:53:06,033 INFO L193 MainTranslator]: Completed translation [2018-11-10 03:53:06,034 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:53:06 WrapperNode [2018-11-10 03:53:06,034 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-10 03:53:06,034 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-10 03:53:06,035 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-10 03:53:06,035 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-10 03:53:06,040 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:53:06" (1/1) ... [2018-11-10 03:53:06,046 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:53:06" (1/1) ... [2018-11-10 03:53:06,059 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-10 03:53:06,059 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-10 03:53:06,059 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-10 03:53:06,060 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-10 03:53:06,065 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:53:06" (1/1) ... [2018-11-10 03:53:06,066 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:53:06" (1/1) ... [2018-11-10 03:53:06,067 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:53:06" (1/1) ... [2018-11-10 03:53:06,067 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:53:06" (1/1) ... [2018-11-10 03:53:06,071 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:53:06" (1/1) ... [2018-11-10 03:53:06,075 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:53:06" (1/1) ... [2018-11-10 03:53:06,076 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:53:06" (1/1) ... [2018-11-10 03:53:06,078 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-10 03:53:06,079 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-10 03:53:06,079 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-10 03:53:06,079 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-10 03:53:06,080 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:53:06" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_5a696e3a-45b7-4509-80f4-5dcc0347adb4/bin-2019/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 [2018-11-10 03:53:06,164 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-10 03:53:06,164 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-10 03:53:06,164 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_float [2018-11-10 03:53:06,165 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_float [2018-11-10 03:53:06,165 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-10 03:53:06,165 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-10 03:53:06,165 INFO L130 BoogieDeclarations]: Found specification of procedure fmin_float [2018-11-10 03:53:06,165 INFO L138 BoogieDeclarations]: Found implementation of procedure fmin_float [2018-11-10 03:53:06,165 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-10 03:53:06,165 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-10 03:53:06,165 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_float [2018-11-10 03:53:06,165 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_float [2018-11-10 03:53:06,388 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-10 03:53:06,388 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 03:53:06 BoogieIcfgContainer [2018-11-10 03:53:06,388 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-10 03:53:06,389 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-10 03:53:06,389 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-10 03:53:06,392 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-10 03:53:06,392 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 03:53:05" (1/3) ... [2018-11-10 03:53:06,393 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67b4c33a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 03:53:06, skipping insertion in model container [2018-11-10 03:53:06,393 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:53:06" (2/3) ... [2018-11-10 03:53:06,393 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67b4c33a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 03:53:06, skipping insertion in model container [2018-11-10 03:53:06,393 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 03:53:06" (3/3) ... [2018-11-10 03:53:06,395 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_1232a_true-unreach-call.c [2018-11-10 03:53:06,402 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-10 03:53:06,407 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-10 03:53:06,419 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-10 03:53:06,443 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-10 03:53:06,443 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-10 03:53:06,443 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-10 03:53:06,443 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-10 03:53:06,443 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-10 03:53:06,443 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-10 03:53:06,444 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-10 03:53:06,444 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-10 03:53:06,457 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2018-11-10 03:53:06,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-11-10 03:53:06,462 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 03:53:06,462 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 03:53:06,464 INFO L424 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 03:53:06,469 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 03:53:06,470 INFO L82 PathProgramCache]: Analyzing trace with hash -661845863, now seen corresponding path program 1 times [2018-11-10 03:53:06,471 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-10 03:53:06,505 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 03:53:06,506 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 03:53:06,506 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 03:53:06,506 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-10 03:53:06,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 03:53:06,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 03:53:06,576 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 03:53:06,576 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-10 03:53:06,576 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-10 03:53:06,580 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-10 03:53:06,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-10 03:53:06,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-10 03:53:06,590 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 2 states. [2018-11-10 03:53:06,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 03:53:06,608 INFO L93 Difference]: Finished difference Result 79 states and 107 transitions. [2018-11-10 03:53:06,608 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-10 03:53:06,609 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 22 [2018-11-10 03:53:06,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 03:53:06,615 INFO L225 Difference]: With dead ends: 79 [2018-11-10 03:53:06,615 INFO L226 Difference]: Without dead ends: 40 [2018-11-10 03:53:06,618 INFO L605 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 [2018-11-10 03:53:06,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2018-11-10 03:53:06,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2018-11-10 03:53:06,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-11-10 03:53:06,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 48 transitions. [2018-11-10 03:53:06,647 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 48 transitions. Word has length 22 [2018-11-10 03:53:06,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 03:53:06,647 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 48 transitions. [2018-11-10 03:53:06,647 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-10 03:53:06,647 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 48 transitions. [2018-11-10 03:53:06,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-11-10 03:53:06,649 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 03:53:06,649 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 03:53:06,649 INFO L424 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 03:53:06,650 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 03:53:06,650 INFO L82 PathProgramCache]: Analyzing trace with hash 1526822905, now seen corresponding path program 1 times [2018-11-10 03:53:06,650 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-10 03:53:06,651 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 03:53:06,651 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 03:53:06,651 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 03:53:06,651 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-10 03:53:06,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 03:53:06,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 03:53:06,716 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 03:53:06,716 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-10 03:53:06,716 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-10 03:53:06,717 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-10 03:53:06,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-10 03:53:06,717 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-10 03:53:06,718 INFO L87 Difference]: Start difference. First operand 40 states and 48 transitions. Second operand 4 states. [2018-11-10 03:53:06,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 03:53:06,764 INFO L93 Difference]: Finished difference Result 59 states and 69 transitions. [2018-11-10 03:53:06,765 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-10 03:53:06,765 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2018-11-10 03:53:06,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 03:53:06,767 INFO L225 Difference]: With dead ends: 59 [2018-11-10 03:53:06,767 INFO L226 Difference]: Without dead ends: 44 [2018-11-10 03:53:06,768 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-10 03:53:06,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-11-10 03:53:06,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2018-11-10 03:53:06,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-11-10 03:53:06,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 53 transitions. [2018-11-10 03:53:06,775 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 53 transitions. Word has length 23 [2018-11-10 03:53:06,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 03:53:06,776 INFO L481 AbstractCegarLoop]: Abstraction has 44 states and 53 transitions. [2018-11-10 03:53:06,776 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-10 03:53:06,776 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 53 transitions. [2018-11-10 03:53:06,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-11-10 03:53:06,777 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 03:53:06,777 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 03:53:06,777 INFO L424 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 03:53:06,778 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 03:53:06,778 INFO L82 PathProgramCache]: Analyzing trace with hash -424183008, now seen corresponding path program 1 times [2018-11-10 03:53:06,778 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-10 03:53:06,779 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 03:53:06,779 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 03:53:06,779 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 03:53:06,779 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-10 03:53:06,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 03:53:06,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 03:53:06,847 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 03:53:06,847 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-10 03:53:06,847 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-10 03:53:06,847 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-10 03:53:06,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-10 03:53:06,848 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-10 03:53:06,848 INFO L87 Difference]: Start difference. First operand 44 states and 53 transitions. Second operand 4 states. [2018-11-10 03:53:06,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 03:53:06,876 INFO L93 Difference]: Finished difference Result 63 states and 74 transitions. [2018-11-10 03:53:06,877 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-10 03:53:06,877 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 26 [2018-11-10 03:53:06,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 03:53:06,878 INFO L225 Difference]: With dead ends: 63 [2018-11-10 03:53:06,878 INFO L226 Difference]: Without dead ends: 48 [2018-11-10 03:53:06,878 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-10 03:53:06,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2018-11-10 03:53:06,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 44. [2018-11-10 03:53:06,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-11-10 03:53:06,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 53 transitions. [2018-11-10 03:53:06,885 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 53 transitions. Word has length 26 [2018-11-10 03:53:06,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 03:53:06,885 INFO L481 AbstractCegarLoop]: Abstraction has 44 states and 53 transitions. [2018-11-10 03:53:06,885 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-10 03:53:06,885 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 53 transitions. [2018-11-10 03:53:06,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-11-10 03:53:06,886 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 03:53:06,886 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 03:53:06,886 INFO L424 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 03:53:06,887 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 03:53:06,887 INFO L82 PathProgramCache]: Analyzing trace with hash 2073832929, now seen corresponding path program 1 times [2018-11-10 03:53:06,887 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-10 03:53:06,888 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 03:53:06,888 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 03:53:06,888 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 03:53:06,888 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-10 03:53:06,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 03:53:06,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 03:53:06,935 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-11-10 03:53:06,944 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList ULTIMATE.dealloc_~addr : $Pointer$ not handled [2018-11-10 03:53:06,945 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-11-10 03:53:06,945 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-11-10 03:53:06,945 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList ULTIMATE.dealloc_~addr : $Pointer$ not handled [2018-11-10 03:53:06,946 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList ULTIMATE.dealloc_~addr : $Pointer$ not handled [2018-11-10 03:53:06,946 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-11-10 03:53:06,946 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-11-10 03:53:06,946 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList ULTIMATE.dealloc_~addr : $Pointer$ not handled [2018-11-10 03:53:06,946 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList ULTIMATE.dealloc_~addr : $Pointer$ not handled [2018-11-10 03:53:06,946 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-11-10 03:53:06,947 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-11-10 03:53:06,947 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList ULTIMATE.dealloc_~addr : $Pointer$ not handled [2018-11-10 03:53:06,947 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList ULTIMATE.dealloc_~addr : $Pointer$ not handled [2018-11-10 03:53:06,947 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-11-10 03:53:06,947 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-11-10 03:53:06,947 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList ULTIMATE.dealloc_~addr : $Pointer$ not handled [2018-11-10 03:53:06,948 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList ULTIMATE.dealloc_~addr : $Pointer$ not handled [2018-11-10 03:53:06,948 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-11-10 03:53:06,948 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-11-10 03:53:06,948 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList ULTIMATE.dealloc_~addr : $Pointer$ not handled [2018-11-10 03:53:06,948 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList ULTIMATE.dealloc_~addr : $Pointer$ not handled [2018-11-10 03:53:06,949 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-11-10 03:53:06,949 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-11-10 03:53:06,949 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList ULTIMATE.dealloc_~addr : $Pointer$ not handled [2018-11-10 03:53:06,949 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList ULTIMATE.dealloc_~addr : $Pointer$ not handled [2018-11-10 03:53:06,949 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-11-10 03:53:06,949 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled [2018-11-10 03:53:06,950 WARN L387 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList ULTIMATE.dealloc_~addr : $Pointer$ not handled [2018-11-10 03:53:06,962 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.11 03:53:06 BoogieIcfgContainer [2018-11-10 03:53:06,962 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-10 03:53:06,963 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-10 03:53:06,963 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-10 03:53:06,963 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-10 03:53:06,963 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 03:53:06" (3/4) ... [2018-11-10 03:53:06,966 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-11-10 03:53:06,967 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-10 03:53:06,967 INFO L168 Benchmark]: Toolchain (without parser) took 1129.89 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 144.7 MB). Free memory was 963.9 MB in the beginning and 1.1 GB in the end (delta: -101.4 MB). Peak memory consumption was 43.3 MB. Max. memory is 11.5 GB. [2018-11-10 03:53:06,969 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.0 GB. Free memory is still 982.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 03:53:06,969 INFO L168 Benchmark]: CACSL2BoogieTranslator took 195.22 ms. Allocated memory is still 1.0 GB. Free memory was 963.9 MB in the beginning and 951.8 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 11.5 GB. [2018-11-10 03:53:06,969 INFO L168 Benchmark]: Boogie Procedure Inliner took 24.80 ms. Allocated memory is still 1.0 GB. Free memory was 951.8 MB in the beginning and 946.4 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-11-10 03:53:06,970 INFO L168 Benchmark]: Boogie Preprocessor took 19.09 ms. Allocated memory is still 1.0 GB. Free memory is still 946.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 03:53:06,970 INFO L168 Benchmark]: RCFGBuilder took 309.87 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 144.7 MB). Free memory was 946.4 MB in the beginning and 1.1 GB in the end (delta: -170.4 MB). Peak memory consumption was 15.5 MB. Max. memory is 11.5 GB. [2018-11-10 03:53:06,971 INFO L168 Benchmark]: TraceAbstraction took 573.03 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 51.6 MB). Peak memory consumption was 51.6 MB. Max. memory is 11.5 GB. [2018-11-10 03:53:06,971 INFO L168 Benchmark]: Witness Printer took 4.02 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 03:53:06,974 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 1.0 GB. Free memory is still 982.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 195.22 ms. Allocated memory is still 1.0 GB. Free memory was 963.9 MB in the beginning and 951.8 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 24.80 ms. Allocated memory is still 1.0 GB. Free memory was 951.8 MB in the beginning and 946.4 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 19.09 ms. Allocated memory is still 1.0 GB. Free memory is still 946.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 309.87 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 144.7 MB). Free memory was 946.4 MB in the beginning and 1.1 GB in the end (delta: -170.4 MB). Peak memory consumption was 15.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 573.03 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 51.6 MB). Peak memory consumption was 51.6 MB. Max. memory is 11.5 GB. * Witness Printer took 4.02 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList ULTIMATE.dealloc_~addr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList ULTIMATE.dealloc_~addr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList ULTIMATE.dealloc_~addr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList ULTIMATE.dealloc_~addr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList ULTIMATE.dealloc_~addr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList ULTIMATE.dealloc_~addr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList ULTIMATE.dealloc_~addr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList ULTIMATE.dealloc_~addr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList ULTIMATE.dealloc_~addr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList ULTIMATE.dealloc_~addr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList ULTIMATE.dealloc_~addr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList ULTIMATE.dealloc_~addr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList ULTIMATE.dealloc_~addr : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.alloc_#res : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList ULTIMATE.dealloc_~addr : $Pointer$ not handled * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 70]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 69, overapproximation of someUnaryFLOAToperation at line 65. Possible FailurePath: [L64] float x = 0.0f; [L65] float y = -0.0f; VAL [x=0] [L66] CALL, EXPR fmin_float(x, y) VAL [\old(x)=0, \old(y)=4286578692] [L36] CALL, EXPR __fpclassify_float(x) [L13] __uint32_t w; [L16] CALL ieee_float_shape_type gf_u; [L16] RET ieee_float_shape_type gf_u; [L17] CALL gf_u.value = (x) [L17] RET gf_u.value = (x) [L18] CALL, EXPR gf_u.word [L18] RET, EXPR gf_u.word [L18] (w) = gf_u.word [L18] RET (w) = gf_u.word [L19] COND FALSE !(0) [L21] COND FALSE !(w == 0x00000000 || w == 0x80000000) [L23-L24] COND FALSE !((w >= 0x00800000 && w <= 0x7f7fffff) || (w >= 0x80800000 && w <= 0xff7fffff)) [L26-L27] COND FALSE !((w >= 0x00000001 && w <= 0x007fffff) || (w >= 0x80000001 && w <= 0x807fffff)) [L29] COND FALSE !(w == 0x7f800000 || w == 0xff800000) [L32] RET return 0; [L36] EXPR __fpclassify_float(x) VAL [\old(x)=0, \old(y)=4286578692, __fpclassify_float(x)=0, x=0, y=4286578692] [L36] COND TRUE __fpclassify_float(x) == 0 [L37] RET return y; VAL [\old(x)=0, \old(y)=4286578692, \result=4286578692, x=0, y=4286578692] [L66] EXPR fmin_float(x, y) VAL [fmin_float(x, y)=4286578692, x=0, y=4286578692] [L66] float res = fmin_float(x, y); [L69] EXPR res == -0.0f && __signbit_float(res) == 1 VAL [res=4286578692, res == -0.0f && __signbit_float(res) == 1=0, x=0, y=4286578692] [L69] COND TRUE !(res == -0.0f && __signbit_float(res) == 1) [L70] __VERIFIER_error() VAL [res=4286578692, x=0, y=4286578692] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 44 locations, 1 error locations. UNSAFE Result, 0.5s OverallTime, 4 OverallIterations, 1 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 149 SDtfs, 0 SDslu, 178 SDs, 0 SdLazy, 21 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=44occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 4 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 97 NumberOfCodeBlocks, 97 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 68 ConstructedInterpolants, 0 QuantifiedInterpolants, 1926 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: 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 0.1.23-1dbac8b [2018-11-10 03:53:08,552 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-10 03:53:08,553 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-10 03:53:08,561 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-10 03:53:08,561 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-10 03:53:08,561 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-10 03:53:08,562 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-10 03:53:08,563 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-10 03:53:08,565 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-10 03:53:08,565 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-10 03:53:08,566 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-10 03:53:08,566 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-10 03:53:08,567 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-10 03:53:08,567 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-10 03:53:08,569 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-10 03:53:08,570 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-10 03:53:08,570 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-10 03:53:08,571 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-10 03:53:08,573 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-10 03:53:08,574 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-10 03:53:08,575 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-10 03:53:08,576 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-10 03:53:08,578 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-10 03:53:08,578 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-10 03:53:08,578 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-10 03:53:08,580 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-10 03:53:08,580 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-10 03:53:08,581 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-10 03:53:08,581 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-10 03:53:08,582 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-10 03:53:08,582 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-10 03:53:08,583 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-10 03:53:08,583 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-10 03:53:08,583 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-10 03:53:08,584 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-10 03:53:08,585 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-10 03:53:08,585 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_5a696e3a-45b7-4509-80f4-5dcc0347adb4/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2018-11-10 03:53:08,597 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-10 03:53:08,597 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-10 03:53:08,597 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-10 03:53:08,598 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-10 03:53:08,598 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-10 03:53:08,598 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-10 03:53:08,598 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-10 03:53:08,598 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-10 03:53:08,599 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-10 03:53:08,599 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-10 03:53:08,599 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-10 03:53:08,599 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-10 03:53:08,599 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-10 03:53:08,599 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-10 03:53:08,599 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-10 03:53:08,600 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-11-10 03:53:08,600 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-11-10 03:53:08,600 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-10 03:53:08,600 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-10 03:53:08,600 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-10 03:53:08,600 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-10 03:53:08,601 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-10 03:53:08,601 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-10 03:53:08,601 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-10 03:53:08,601 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-10 03:53:08,601 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-10 03:53:08,601 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-10 03:53:08,601 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-10 03:53:08,602 INFO L133 SettingsManager]: * Trace refinement strategy=WALRUS [2018-11-10 03:53:08,602 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-10 03:53:08,602 INFO L133 SettingsManager]: * Command for external solver=cvc4nyu --tear-down-incremental --rewrite-divk --print-success --lang smt [2018-11-10 03:53:08,602 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-11-10 03:53:08,602 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true 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/working_dir_5a696e3a-45b7-4509-80f4-5dcc0347adb4/bin-2019/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(__VERIFIER_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 -> cd0c8f7b91fa815011541d5ffb41102d34132ba8 [2018-11-10 03:53:08,632 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-10 03:53:08,640 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-10 03:53:08,642 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-10 03:53:08,643 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-10 03:53:08,643 INFO L276 PluginConnector]: CDTParser initialized [2018-11-10 03:53:08,644 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_5a696e3a-45b7-4509-80f4-5dcc0347adb4/bin-2019/utaipan/../../sv-benchmarks/c/float-newlib/float_req_bl_1232a_true-unreach-call.c [2018-11-10 03:53:08,685 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_5a696e3a-45b7-4509-80f4-5dcc0347adb4/bin-2019/utaipan/data/e5ec61830/9ec102b6e7324f84ac30ac036788fad3/FLAG6b251bf32 [2018-11-10 03:53:09,027 INFO L298 CDTParser]: Found 1 translation units. [2018-11-10 03:53:09,027 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_5a696e3a-45b7-4509-80f4-5dcc0347adb4/sv-benchmarks/c/float-newlib/float_req_bl_1232a_true-unreach-call.c [2018-11-10 03:53:09,031 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_5a696e3a-45b7-4509-80f4-5dcc0347adb4/bin-2019/utaipan/data/e5ec61830/9ec102b6e7324f84ac30ac036788fad3/FLAG6b251bf32 [2018-11-10 03:53:09,039 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_5a696e3a-45b7-4509-80f4-5dcc0347adb4/bin-2019/utaipan/data/e5ec61830/9ec102b6e7324f84ac30ac036788fad3 [2018-11-10 03:53:09,042 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-10 03:53:09,043 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-10 03:53:09,043 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-10 03:53:09,043 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-10 03:53:09,045 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-10 03:53:09,046 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 03:53:09" (1/1) ... [2018-11-10 03:53:09,047 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49bce155 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:53:09, skipping insertion in model container [2018-11-10 03:53:09,047 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 03:53:09" (1/1) ... [2018-11-10 03:53:09,053 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-10 03:53:09,066 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-10 03:53:09,177 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 03:53:09,180 INFO L189 MainTranslator]: Completed pre-run [2018-11-10 03:53:09,200 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 03:53:09,219 INFO L193 MainTranslator]: Completed translation [2018-11-10 03:53:09,219 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:53:09 WrapperNode [2018-11-10 03:53:09,219 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-10 03:53:09,220 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-10 03:53:09,220 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-10 03:53:09,220 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-10 03:53:09,226 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:53:09" (1/1) ... [2018-11-10 03:53:09,237 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:53:09" (1/1) ... [2018-11-10 03:53:09,257 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-10 03:53:09,258 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-10 03:53:09,258 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-10 03:53:09,258 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-10 03:53:09,266 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:53:09" (1/1) ... [2018-11-10 03:53:09,267 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:53:09" (1/1) ... [2018-11-10 03:53:09,270 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:53:09" (1/1) ... [2018-11-10 03:53:09,271 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:53:09" (1/1) ... [2018-11-10 03:53:09,278 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:53:09" (1/1) ... [2018-11-10 03:53:09,283 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:53:09" (1/1) ... [2018-11-10 03:53:09,285 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:53:09" (1/1) ... [2018-11-10 03:53:09,289 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-10 03:53:09,289 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-10 03:53:09,290 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-10 03:53:09,290 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-10 03:53:09,290 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:53:09" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_5a696e3a-45b7-4509-80f4-5dcc0347adb4/bin-2019/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 [2018-11-10 03:53:09,379 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-10 03:53:09,379 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-10 03:53:09,379 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_float [2018-11-10 03:53:09,379 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_float [2018-11-10 03:53:09,379 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-10 03:53:09,379 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-10 03:53:09,380 INFO L130 BoogieDeclarations]: Found specification of procedure fmin_float [2018-11-10 03:53:09,380 INFO L138 BoogieDeclarations]: Found implementation of procedure fmin_float [2018-11-10 03:53:09,380 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-10 03:53:09,380 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-10 03:53:09,380 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_float [2018-11-10 03:53:09,380 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_float [2018-11-10 03:53:09,565 WARN L317 ript$VariableManager]: TermVariabe |qquantified_#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-10 03:53:09,625 WARN L317 ript$VariableManager]: TermVariabe |qquantified_#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-10 03:53:09,629 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-10 03:53:09,629 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 03:53:09 BoogieIcfgContainer [2018-11-10 03:53:09,629 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-10 03:53:09,630 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-10 03:53:09,630 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-10 03:53:09,633 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-10 03:53:09,633 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 03:53:09" (1/3) ... [2018-11-10 03:53:09,634 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@707e2877 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 03:53:09, skipping insertion in model container [2018-11-10 03:53:09,634 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:53:09" (2/3) ... [2018-11-10 03:53:09,635 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@707e2877 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 03:53:09, skipping insertion in model container [2018-11-10 03:53:09,635 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 03:53:09" (3/3) ... [2018-11-10 03:53:09,636 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_1232a_true-unreach-call.c [2018-11-10 03:53:09,643 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-10 03:53:09,649 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-10 03:53:09,660 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-10 03:53:09,683 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-11-10 03:53:09,683 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-10 03:53:09,684 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-10 03:53:09,684 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-10 03:53:09,684 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-10 03:53:09,684 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-10 03:53:09,684 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-10 03:53:09,684 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-10 03:53:09,684 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-10 03:53:09,697 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states. [2018-11-10 03:53:09,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-11-10 03:53:09,701 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 03:53:09,702 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 03:53:09,704 INFO L424 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 03:53:09,708 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 03:53:09,708 INFO L82 PathProgramCache]: Analyzing trace with hash -2032422118, now seen corresponding path program 1 times [2018-11-10 03:53:09,711 INFO L225 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-10 03:53:09,712 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_5a696e3a-45b7-4509-80f4-5dcc0347adb4/bin-2019/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 [2018-11-10 03:53:09,717 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 03:53:09,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 03:53:09,771 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 03:53:09,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 03:53:09,784 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-10 03:53:09,793 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 03:53:09,794 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-10 03:53:09,797 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-10 03:53:09,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-10 03:53:09,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-10 03:53:09,806 INFO L87 Difference]: Start difference. First operand 42 states. Second operand 2 states. [2018-11-10 03:53:09,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 03:53:09,823 INFO L93 Difference]: Finished difference Result 75 states and 103 transitions. [2018-11-10 03:53:09,823 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-10 03:53:09,824 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 21 [2018-11-10 03:53:09,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 03:53:09,829 INFO L225 Difference]: With dead ends: 75 [2018-11-10 03:53:09,830 INFO L226 Difference]: Without dead ends: 38 [2018-11-10 03:53:09,832 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-10 03:53:09,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2018-11-10 03:53:09,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2018-11-10 03:53:09,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2018-11-10 03:53:09,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 46 transitions. [2018-11-10 03:53:09,859 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 46 transitions. Word has length 21 [2018-11-10 03:53:09,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 03:53:09,859 INFO L481 AbstractCegarLoop]: Abstraction has 38 states and 46 transitions. [2018-11-10 03:53:09,859 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-10 03:53:09,860 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 46 transitions. [2018-11-10 03:53:09,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-11-10 03:53:09,861 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 03:53:09,861 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 03:53:09,862 INFO L424 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 03:53:09,862 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 03:53:09,862 INFO L82 PathProgramCache]: Analyzing trace with hash 1463339840, now seen corresponding path program 1 times [2018-11-10 03:53:09,862 INFO L225 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-10 03:53:09,862 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_5a696e3a-45b7-4509-80f4-5dcc0347adb4/bin-2019/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 [2018-11-10 03:53:09,870 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 03:53:09,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 03:53:09,908 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 03:53:09,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 03:53:09,933 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-10 03:53:09,945 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 03:53:09,945 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-10 03:53:09,946 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-10 03:53:09,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-10 03:53:09,947 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-10 03:53:09,947 INFO L87 Difference]: Start difference. First operand 38 states and 46 transitions. Second operand 4 states. [2018-11-10 03:53:09,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 03:53:09,984 INFO L93 Difference]: Finished difference Result 56 states and 66 transitions. [2018-11-10 03:53:09,985 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-10 03:53:09,985 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22 [2018-11-10 03:53:09,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 03:53:09,987 INFO L225 Difference]: With dead ends: 56 [2018-11-10 03:53:09,987 INFO L226 Difference]: Without dead ends: 41 [2018-11-10 03:53:09,988 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-10 03:53:09,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-11-10 03:53:09,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2018-11-10 03:53:09,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-11-10 03:53:09,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 50 transitions. [2018-11-10 03:53:09,993 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 50 transitions. Word has length 22 [2018-11-10 03:53:09,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 03:53:09,994 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 50 transitions. [2018-11-10 03:53:09,994 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-10 03:53:09,994 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 50 transitions. [2018-11-10 03:53:09,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-11-10 03:53:09,995 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 03:53:09,995 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 03:53:09,995 INFO L424 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 03:53:09,995 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 03:53:09,995 INFO L82 PathProgramCache]: Analyzing trace with hash -583274473, now seen corresponding path program 1 times [2018-11-10 03:53:09,995 INFO L225 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-10 03:53:09,996 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_5a696e3a-45b7-4509-80f4-5dcc0347adb4/bin-2019/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 [2018-11-10 03:53:09,999 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 03:53:10,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 03:53:10,036 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 03:53:10,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 03:53:10,124 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-10 03:53:10,133 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 03:53:10,133 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-11-10 03:53:10,134 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-10 03:53:10,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-10 03:53:10,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-11-10 03:53:10,134 INFO L87 Difference]: Start difference. First operand 41 states and 50 transitions. Second operand 8 states. [2018-11-10 03:53:10,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 03:53:10,610 INFO L93 Difference]: Finished difference Result 60 states and 73 transitions. [2018-11-10 03:53:10,611 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-10 03:53:10,611 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 23 [2018-11-10 03:53:10,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 03:53:10,612 INFO L225 Difference]: With dead ends: 60 [2018-11-10 03:53:10,612 INFO L226 Difference]: Without dead ends: 40 [2018-11-10 03:53:10,612 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2018-11-10 03:53:10,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2018-11-10 03:53:10,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2018-11-10 03:53:10,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-11-10 03:53:10,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 47 transitions. [2018-11-10 03:53:10,618 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 47 transitions. Word has length 23 [2018-11-10 03:53:10,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 03:53:10,618 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 47 transitions. [2018-11-10 03:53:10,618 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-10 03:53:10,618 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 47 transitions. [2018-11-10 03:53:10,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-11-10 03:53:10,619 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 03:53:10,619 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 03:53:10,620 INFO L424 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 03:53:10,620 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 03:53:10,620 INFO L82 PathProgramCache]: Analyzing trace with hash -1063309775, now seen corresponding path program 1 times [2018-11-10 03:53:10,620 INFO L225 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-10 03:53:10,620 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_5a696e3a-45b7-4509-80f4-5dcc0347adb4/bin-2019/utaipan/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2018-11-10 03:53:10,623 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 03:53:10,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 03:53:10,668 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 03:53:10,683 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-11-10 03:53:10,683 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-10 03:53:10,690 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 03:53:10,690 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-10 03:53:10,690 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-10 03:53:10,691 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-10 03:53:10,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-10 03:53:10,691 INFO L87 Difference]: Start difference. First operand 40 states and 47 transitions. Second operand 4 states. [2018-11-10 03:53:10,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 03:53:10,704 INFO L93 Difference]: Finished difference Result 56 states and 64 transitions. [2018-11-10 03:53:10,705 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-10 03:53:10,705 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2018-11-10 03:53:10,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 03:53:10,706 INFO L225 Difference]: With dead ends: 56 [2018-11-10 03:53:10,706 INFO L226 Difference]: Without dead ends: 41 [2018-11-10 03:53:10,707 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-10 03:53:10,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-11-10 03:53:10,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2018-11-10 03:53:10,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-11-10 03:53:10,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 48 transitions. [2018-11-10 03:53:10,712 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 48 transitions. Word has length 30 [2018-11-10 03:53:10,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 03:53:10,713 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 48 transitions. [2018-11-10 03:53:10,713 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-10 03:53:10,713 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 48 transitions. [2018-11-10 03:53:10,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-11-10 03:53:10,714 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 03:53:10,714 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 03:53:10,715 INFO L424 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 03:53:10,715 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 03:53:10,716 INFO L82 PathProgramCache]: Analyzing trace with hash 1223995116, now seen corresponding path program 1 times [2018-11-10 03:53:10,716 INFO L225 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-10 03:53:10,716 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_5a696e3a-45b7-4509-80f4-5dcc0347adb4/bin-2019/utaipan/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2018-11-10 03:53:10,735 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 03:53:10,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 03:53:10,788 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 03:53:10,908 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-11-10 03:53:10,909 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-10 03:53:10,917 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 03:53:10,917 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-11-10 03:53:10,917 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-10 03:53:10,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-10 03:53:10,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-11-10 03:53:10,918 INFO L87 Difference]: Start difference. First operand 41 states and 48 transitions. Second operand 8 states. [2018-11-10 03:53:11,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 03:53:11,306 INFO L93 Difference]: Finished difference Result 58 states and 66 transitions. [2018-11-10 03:53:11,307 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-10 03:53:11,307 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 31 [2018-11-10 03:53:11,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 03:53:11,308 INFO L225 Difference]: With dead ends: 58 [2018-11-10 03:53:11,308 INFO L226 Difference]: Without dead ends: 35 [2018-11-10 03:53:11,308 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2018-11-10 03:53:11,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-11-10 03:53:11,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2018-11-10 03:53:11,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-11-10 03:53:11,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 37 transitions. [2018-11-10 03:53:11,313 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 37 transitions. Word has length 31 [2018-11-10 03:53:11,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 03:53:11,313 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 37 transitions. [2018-11-10 03:53:11,314 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-10 03:53:11,314 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 37 transitions. [2018-11-10 03:53:11,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-11-10 03:53:11,314 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 03:53:11,315 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 03:53:11,315 INFO L424 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 03:53:11,315 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 03:53:11,316 INFO L82 PathProgramCache]: Analyzing trace with hash 410180372, now seen corresponding path program 1 times [2018-11-10 03:53:11,316 INFO L225 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-10 03:53:11,316 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_5a696e3a-45b7-4509-80f4-5dcc0347adb4/bin-2019/utaipan/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2018-11-10 03:53:11,320 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 03:53:11,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 03:53:11,388 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 03:53:11,455 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-11-10 03:53:11,455 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-10 03:53:11,464 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 03:53:11,464 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-11-10 03:53:11,464 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-10 03:53:11,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-10 03:53:11,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-11-10 03:53:11,465 INFO L87 Difference]: Start difference. First operand 35 states and 37 transitions. Second operand 8 states. [2018-11-10 03:53:11,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 03:53:11,722 INFO L93 Difference]: Finished difference Result 43 states and 45 transitions. [2018-11-10 03:53:11,723 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-10 03:53:11,723 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 32 [2018-11-10 03:53:11,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 03:53:11,724 INFO L225 Difference]: With dead ends: 43 [2018-11-10 03:53:11,724 INFO L226 Difference]: Without dead ends: 40 [2018-11-10 03:53:11,724 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2018-11-10 03:53:11,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2018-11-10 03:53:11,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2018-11-10 03:53:11,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-11-10 03:53:11,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 42 transitions. [2018-11-10 03:53:11,728 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 42 transitions. Word has length 32 [2018-11-10 03:53:11,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 03:53:11,729 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 42 transitions. [2018-11-10 03:53:11,729 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-10 03:53:11,729 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 42 transitions. [2018-11-10 03:53:11,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-11-10 03:53:11,730 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 03:53:11,730 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 03:53:11,730 INFO L424 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 03:53:11,731 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 03:53:11,731 INFO L82 PathProgramCache]: Analyzing trace with hash 1219526998, now seen corresponding path program 1 times [2018-11-10 03:53:11,731 INFO L225 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-10 03:53:11,731 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_5a696e3a-45b7-4509-80f4-5dcc0347adb4/bin-2019/utaipan/mathsat Starting monitored process 8 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with mathsat -unsat_core_generation=3 [2018-11-10 03:53:11,735 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 03:53:11,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 03:53:11,804 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 03:53:11,862 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-11-10 03:53:11,863 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-10 03:53:11,872 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 03:53:11,872 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-10 03:53:11,872 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-10 03:53:11,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-10 03:53:11,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-10 03:53:11,873 INFO L87 Difference]: Start difference. First operand 40 states and 42 transitions. Second operand 5 states. [2018-11-10 03:53:11,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 03:53:11,955 INFO L93 Difference]: Finished difference Result 51 states and 52 transitions. [2018-11-10 03:53:11,956 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-10 03:53:11,956 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 32 [2018-11-10 03:53:11,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 03:53:11,957 INFO L225 Difference]: With dead ends: 51 [2018-11-10 03:53:11,957 INFO L226 Difference]: Without dead ends: 35 [2018-11-10 03:53:11,958 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-10 03:53:11,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-11-10 03:53:11,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2018-11-10 03:53:11,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-11-10 03:53:11,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 35 transitions. [2018-11-10 03:53:11,961 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 35 transitions. Word has length 32 [2018-11-10 03:53:11,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 03:53:11,961 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 35 transitions. [2018-11-10 03:53:11,961 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-10 03:53:11,962 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 35 transitions. [2018-11-10 03:53:11,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-11-10 03:53:11,962 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 03:53:11,963 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 03:53:11,963 INFO L424 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 03:53:11,963 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 03:53:11,963 INFO L82 PathProgramCache]: Analyzing trace with hash 1465986518, now seen corresponding path program 1 times [2018-11-10 03:53:11,963 INFO L225 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-10 03:53:11,964 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_5a696e3a-45b7-4509-80f4-5dcc0347adb4/bin-2019/utaipan/mathsat Starting monitored process 9 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with mathsat -unsat_core_generation=3 [2018-11-10 03:53:11,967 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 03:53:12,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 03:53:12,045 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 03:53:12,229 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-11-10 03:53:12,229 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-10 03:53:12,244 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 03:53:12,244 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2018-11-10 03:53:12,245 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-11-10 03:53:12,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-11-10 03:53:12,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2018-11-10 03:53:12,245 INFO L87 Difference]: Start difference. First operand 35 states and 35 transitions. Second operand 13 states. [2018-11-10 03:53:12,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 03:53:12,647 INFO L93 Difference]: Finished difference Result 35 states and 35 transitions. [2018-11-10 03:53:12,648 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-11-10 03:53:12,648 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 40 [2018-11-10 03:53:12,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 03:53:12,648 INFO L225 Difference]: With dead ends: 35 [2018-11-10 03:53:12,648 INFO L226 Difference]: Without dead ends: 0 [2018-11-10 03:53:12,649 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=57, Invalid=323, Unknown=0, NotChecked=0, Total=380 [2018-11-10 03:53:12,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-10 03:53:12,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-10 03:53:12,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-10 03:53:12,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-10 03:53:12,649 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 40 [2018-11-10 03:53:12,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 03:53:12,649 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-10 03:53:12,650 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-11-10 03:53:12,650 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-10 03:53:12,650 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-10 03:53:12,653 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-10 03:53:12,782 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2018-11-10 03:53:12,782 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2018-11-10 03:53:12,782 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-10 03:53:12,782 INFO L428 ceAbstractionStarter]: At program point fmin_floatENTRY(lines 35 42) the Hoare annotation is: true [2018-11-10 03:53:12,782 INFO L425 ceAbstractionStarter]: For program point fmin_floatEXIT(lines 35 42) no Hoare annotation was computed. [2018-11-10 03:53:12,782 INFO L425 ceAbstractionStarter]: For program point fmin_floatFINAL(lines 35 42) no Hoare annotation was computed. [2018-11-10 03:53:12,782 INFO L425 ceAbstractionStarter]: For program point L41(line 41) no Hoare annotation was computed. [2018-11-10 03:53:12,783 INFO L425 ceAbstractionStarter]: For program point L41-2(line 41) no Hoare annotation was computed. [2018-11-10 03:53:12,783 INFO L421 ceAbstractionStarter]: At program point L38(line 38) the Hoare annotation is: (let ((.cse0 (= fmin_float_~x |fmin_float_#in~x|))) (or (and .cse0 (exists ((__fpclassify_float_~w~0 (_ BitVec 32))) (and (= (fp ((_ extract 31 31) __fpclassify_float_~w~0) ((_ extract 30 23) __fpclassify_float_~w~0) ((_ extract 22 0) __fpclassify_float_~w~0)) |fmin_float_#in~x|) (not (= __fpclassify_float_~w~0 (_ bv0 32)))))) (and .cse0 (= fmin_float_~y |fmin_float_#in~y|)))) [2018-11-10 03:53:12,783 INFO L425 ceAbstractionStarter]: For program point L38-1(lines 38 39) no Hoare annotation was computed. [2018-11-10 03:53:12,783 INFO L421 ceAbstractionStarter]: At program point L36(line 36) the Hoare annotation is: (and (= fmin_float_~x |fmin_float_#in~x|) (= fmin_float_~y |fmin_float_#in~y|)) [2018-11-10 03:53:12,783 INFO L425 ceAbstractionStarter]: For program point L36-1(lines 36 37) no Hoare annotation was computed. [2018-11-10 03:53:12,783 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-10 03:53:12,783 INFO L428 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-11-10 03:53:12,783 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-10 03:53:12,783 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-10 03:53:12,783 INFO L425 ceAbstractionStarter]: For program point L66-1(line 66) no Hoare annotation was computed. [2018-11-10 03:53:12,783 INFO L425 ceAbstractionStarter]: For program point L69-4(lines 69 72) no Hoare annotation was computed. [2018-11-10 03:53:12,783 INFO L428 ceAbstractionStarter]: At program point mainENTRY(lines 56 75) the Hoare annotation is: true [2018-11-10 03:53:12,783 INFO L425 ceAbstractionStarter]: For program point mainEXIT(lines 56 75) no Hoare annotation was computed. [2018-11-10 03:53:12,783 INFO L425 ceAbstractionStarter]: For program point mainFINAL(lines 56 75) no Hoare annotation was computed. [2018-11-10 03:53:12,784 INFO L425 ceAbstractionStarter]: For program point L70(line 70) no Hoare annotation was computed. [2018-11-10 03:53:12,784 INFO L425 ceAbstractionStarter]: For program point L69(line 69) no Hoare annotation was computed. [2018-11-10 03:53:12,784 INFO L421 ceAbstractionStarter]: At program point L69-1(line 69) the Hoare annotation is: (let ((.cse0 (fp.neg (_ +zero 8 24)))) (and (= (_ +zero 8 24) main_~x~0) (= main_~res~0 .cse0) |main_#t~short9| (= main_~y~0 .cse0))) [2018-11-10 03:53:12,784 INFO L425 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 70) no Hoare annotation was computed. [2018-11-10 03:53:12,784 INFO L425 ceAbstractionStarter]: For program point L69-2(line 69) no Hoare annotation was computed. [2018-11-10 03:53:12,784 INFO L421 ceAbstractionStarter]: At program point L66(line 66) the Hoare annotation is: (and (= (_ +zero 8 24) main_~x~0) (= main_~y~0 (fp.neg (_ +zero 8 24)))) [2018-11-10 03:53:12,784 INFO L425 ceAbstractionStarter]: For program point L29(lines 29 32) no Hoare annotation was computed. [2018-11-10 03:53:12,784 INFO L425 ceAbstractionStarter]: For program point __fpclassify_floatFINAL(lines 12 33) no Hoare annotation was computed. [2018-11-10 03:53:12,784 INFO L425 ceAbstractionStarter]: For program point L23(lines 23 32) no Hoare annotation was computed. [2018-11-10 03:53:12,784 INFO L425 ceAbstractionStarter]: For program point L15-1(lines 15 19) no Hoare annotation was computed. [2018-11-10 03:53:12,784 INFO L421 ceAbstractionStarter]: At program point L15-3(lines 15 19) the Hoare annotation is: (= __fpclassify_float_~x |__fpclassify_float_#in~x|) [2018-11-10 03:53:12,784 INFO L425 ceAbstractionStarter]: For program point L15-4(lines 12 33) no Hoare annotation was computed. [2018-11-10 03:53:12,784 INFO L425 ceAbstractionStarter]: For program point L26(lines 26 32) no Hoare annotation was computed. [2018-11-10 03:53:12,785 INFO L428 ceAbstractionStarter]: At program point __fpclassify_floatENTRY(lines 12 33) the Hoare annotation is: true [2018-11-10 03:53:12,785 INFO L425 ceAbstractionStarter]: For program point __fpclassify_floatEXIT(lines 12 33) no Hoare annotation was computed. [2018-11-10 03:53:12,785 INFO L425 ceAbstractionStarter]: For program point __signbit_floatFINAL(lines 44 54) no Hoare annotation was computed. [2018-11-10 03:53:12,785 INFO L428 ceAbstractionStarter]: At program point __signbit_floatENTRY(lines 44 54) the Hoare annotation is: true [2018-11-10 03:53:12,785 INFO L425 ceAbstractionStarter]: For program point L47-1(lines 47 51) no Hoare annotation was computed. [2018-11-10 03:53:12,785 INFO L421 ceAbstractionStarter]: At program point L47-3(lines 47 51) the Hoare annotation is: (= |__signbit_float_#in~x| __signbit_float_~x) [2018-11-10 03:53:12,785 INFO L425 ceAbstractionStarter]: For program point __signbit_floatEXIT(lines 44 54) no Hoare annotation was computed. [2018-11-10 03:53:12,785 INFO L425 ceAbstractionStarter]: For program point L47-4(lines 47 51) no Hoare annotation was computed. [2018-11-10 03:53:12,793 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.11 03:53:12 BoogieIcfgContainer [2018-11-10 03:53:12,794 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-10 03:53:12,794 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-10 03:53:12,794 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-10 03:53:12,794 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-10 03:53:12,795 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 03:53:09" (3/4) ... [2018-11-10 03:53:12,797 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-10 03:53:12,802 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-10 03:53:12,802 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure fmin_float [2018-11-10 03:53:12,802 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-10 03:53:12,802 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure __fpclassify_float [2018-11-10 03:53:12,802 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure __signbit_float [2018-11-10 03:53:12,806 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 42 nodes and edges [2018-11-10 03:53:12,806 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2018-11-10 03:53:12,806 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2018-11-10 03:53:12,824 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: x == \old(x) [2018-11-10 03:53:12,824 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: \old(x) == x [2018-11-10 03:53:12,845 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_5a696e3a-45b7-4509-80f4-5dcc0347adb4/bin-2019/utaipan/witness.graphml [2018-11-10 03:53:12,845 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-10 03:53:12,846 INFO L168 Benchmark]: Toolchain (without parser) took 3803.73 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 144.7 MB). Free memory was 953.2 MB in the beginning and 832.0 MB in the end (delta: 121.3 MB). Peak memory consumption was 266.0 MB. Max. memory is 11.5 GB. [2018-11-10 03:53:12,848 INFO L168 Benchmark]: CDTParser took 0.48 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 03:53:12,848 INFO L168 Benchmark]: CACSL2BoogieTranslator took 176.51 ms. Allocated memory is still 1.0 GB. Free memory was 953.2 MB in the beginning and 935.8 MB in the end (delta: 17.5 MB). Peak memory consumption was 17.5 MB. Max. memory is 11.5 GB. [2018-11-10 03:53:12,848 INFO L168 Benchmark]: Boogie Procedure Inliner took 37.17 ms. Allocated memory is still 1.0 GB. Free memory is still 935.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 03:53:12,849 INFO L168 Benchmark]: Boogie Preprocessor took 31.55 ms. Allocated memory is still 1.0 GB. Free memory is still 935.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 03:53:12,849 INFO L168 Benchmark]: RCFGBuilder took 340.09 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 144.7 MB). Free memory was 935.8 MB in the beginning and 1.1 GB in the end (delta: -179.9 MB). Peak memory consumption was 22.5 MB. Max. memory is 11.5 GB. [2018-11-10 03:53:12,849 INFO L168 Benchmark]: TraceAbstraction took 3163.56 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 838.9 MB in the end (delta: 276.8 MB). Peak memory consumption was 276.8 MB. Max. memory is 11.5 GB. [2018-11-10 03:53:12,850 INFO L168 Benchmark]: Witness Printer took 51.16 ms. Allocated memory is still 1.2 GB. Free memory was 838.9 MB in the beginning and 832.0 MB in the end (delta: 6.9 MB). Peak memory consumption was 6.9 MB. Max. memory is 11.5 GB. [2018-11-10 03:53:12,851 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.48 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 176.51 ms. Allocated memory is still 1.0 GB. Free memory was 953.2 MB in the beginning and 935.8 MB in the end (delta: 17.5 MB). Peak memory consumption was 17.5 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 37.17 ms. Allocated memory is still 1.0 GB. Free memory is still 935.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 31.55 ms. Allocated memory is still 1.0 GB. Free memory is still 935.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 340.09 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 144.7 MB). Free memory was 935.8 MB in the beginning and 1.1 GB in the end (delta: -179.9 MB). Peak memory consumption was 22.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 3163.56 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 838.9 MB in the end (delta: 276.8 MB). Peak memory consumption was 276.8 MB. Max. memory is 11.5 GB. * Witness Printer took 51.16 ms. Allocated memory is still 1.2 GB. Free memory was 838.9 MB in the beginning and 832.0 MB in the end (delta: 6.9 MB). Peak memory consumption was 6.9 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 70]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 15]: Loop Invariant Derived loop invariant: x == \old(x) - InvariantResult [Line: 47]: Loop Invariant Derived loop invariant: \old(x) == x - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 42 locations, 1 error locations. SAFE Result, 3.1s OverallTime, 8 OverallIterations, 2 TraceHistogramMax, 1.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.1s HoareAnnotationTime, HoareTripleCheckerStatistics: 298 SDtfs, 124 SDslu, 980 SDs, 0 SdLazy, 375 SolverSat, 16 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 242 GetRequests, 187 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=42occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 8 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 13 LocationsWithAnnotation, 31 PreInvPairs, 38 NumberOfFragments, 68 HoareAnnotationTreeSize, 31 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 13 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 231 NumberOfCodeBlocks, 231 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 223 ConstructedInterpolants, 14 QuantifiedInterpolants, 20350 SizeOfPredicates, 29 NumberOfNonLiveVariables, 833 ConjunctsInSsa, 58 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 30/30 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...