./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/double_req_bl_1252b_false-unreach-call.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 635dfa2a Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_2c2d9efa-1132-45ac-8433-7c8ef55ea37f/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_2c2d9efa-1132-45ac-8433-7c8ef55ea37f/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_2c2d9efa-1132-45ac-8433-7c8ef55ea37f/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_2c2d9efa-1132-45ac-8433-7c8ef55ea37f/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1252b_false-unreach-call.c -s /tmp/vcloud-vcloud-master/worker/working_dir_2c2d9efa-1132-45ac-8433-7c8ef55ea37f/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_2c2d9efa-1132-45ac-8433-7c8ef55ea37f/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 6f57b560c2271100a3cc213cf38aa06905e4b86e ...................................................................................................................................................................................................................................................................................................................................................................................................... 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_2c2d9efa-1132-45ac-8433-7c8ef55ea37f/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_2c2d9efa-1132-45ac-8433-7c8ef55ea37f/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_2c2d9efa-1132-45ac-8433-7c8ef55ea37f/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_2c2d9efa-1132-45ac-8433-7c8ef55ea37f/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1252b_false-unreach-call.c -s /tmp/vcloud-vcloud-master/worker/working_dir_2c2d9efa-1132-45ac-8433-7c8ef55ea37f/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_2c2d9efa-1132-45ac-8433-7c8ef55ea37f/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 6f57b560c2271100a3cc213cf38aa06905e4b86e .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.1.23-635dfa2 [2018-12-08 19:22:49,593 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-08 19:22:49,594 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-08 19:22:49,600 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-08 19:22:49,600 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-08 19:22:49,600 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-08 19:22:49,601 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-08 19:22:49,602 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-08 19:22:49,603 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-08 19:22:49,603 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-08 19:22:49,604 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-08 19:22:49,604 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-08 19:22:49,604 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-08 19:22:49,605 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-08 19:22:49,605 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-08 19:22:49,605 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-08 19:22:49,606 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-08 19:22:49,607 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-08 19:22:49,608 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-08 19:22:49,608 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-08 19:22:49,609 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-08 19:22:49,610 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-08 19:22:49,611 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-08 19:22:49,611 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-08 19:22:49,611 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-08 19:22:49,611 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-08 19:22:49,612 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-08 19:22:49,612 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-08 19:22:49,613 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-08 19:22:49,613 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-08 19:22:49,613 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-08 19:22:49,613 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-08 19:22:49,614 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-08 19:22:49,614 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-08 19:22:49,614 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-08 19:22:49,614 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-08 19:22:49,615 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_2c2d9efa-1132-45ac-8433-7c8ef55ea37f/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-12-08 19:22:49,622 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-08 19:22:49,622 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-08 19:22:49,622 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-08 19:22:49,622 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-08 19:22:49,622 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-08 19:22:49,622 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-08 19:22:49,623 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-08 19:22:49,623 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-12-08 19:22:49,623 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-08 19:22:49,623 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-12-08 19:22:49,623 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-12-08 19:22:49,623 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-12-08 19:22:49,623 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-08 19:22:49,623 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-08 19:22:49,624 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-08 19:22:49,624 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-08 19:22:49,624 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-08 19:22:49,624 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-08 19:22:49,624 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-08 19:22:49,624 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-08 19:22:49,624 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-08 19:22:49,624 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-08 19:22:49,624 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-08 19:22:49,624 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-08 19:22:49,624 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-08 19:22:49,625 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-08 19:22:49,625 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-08 19:22:49,625 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-08 19:22:49,625 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-08 19:22:49,625 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-08 19:22:49,625 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-08 19:22:49,625 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-08 19:22:49,625 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-12-08 19:22:49,625 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-08 19:22:49,625 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-08 19:22:49,625 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-12-08 19:22:49,626 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_2c2d9efa-1132-45ac-8433-7c8ef55ea37f/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 -> 6f57b560c2271100a3cc213cf38aa06905e4b86e [2018-12-08 19:22:49,642 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-08 19:22:49,649 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-08 19:22:49,651 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-08 19:22:49,652 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-08 19:22:49,652 INFO L276 PluginConnector]: CDTParser initialized [2018-12-08 19:22:49,652 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_2c2d9efa-1132-45ac-8433-7c8ef55ea37f/bin-2019/utaipan/../../sv-benchmarks/c/float-newlib/double_req_bl_1252b_false-unreach-call.c [2018-12-08 19:22:49,686 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_2c2d9efa-1132-45ac-8433-7c8ef55ea37f/bin-2019/utaipan/data/99594a9d9/4405350bd81043ccb16b7eef4265e043/FLAG74ebc5b5e [2018-12-08 19:22:49,985 INFO L307 CDTParser]: Found 1 translation units. [2018-12-08 19:22:49,985 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_2c2d9efa-1132-45ac-8433-7c8ef55ea37f/sv-benchmarks/c/float-newlib/double_req_bl_1252b_false-unreach-call.c [2018-12-08 19:22:49,988 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_2c2d9efa-1132-45ac-8433-7c8ef55ea37f/bin-2019/utaipan/data/99594a9d9/4405350bd81043ccb16b7eef4265e043/FLAG74ebc5b5e [2018-12-08 19:22:49,996 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_2c2d9efa-1132-45ac-8433-7c8ef55ea37f/bin-2019/utaipan/data/99594a9d9/4405350bd81043ccb16b7eef4265e043 [2018-12-08 19:22:49,998 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-08 19:22:49,999 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-08 19:22:49,999 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-08 19:22:49,999 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-08 19:22:50,001 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-08 19:22:50,002 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.12 07:22:49" (1/1) ... [2018-12-08 19:22:50,003 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58f41b83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 07:22:50, skipping insertion in model container [2018-12-08 19:22:50,003 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.12 07:22:49" (1/1) ... [2018-12-08 19:22:50,009 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-08 19:22:50,021 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-08 19:22:50,116 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-08 19:22:50,118 INFO L191 MainTranslator]: Completed pre-run [2018-12-08 19:22:50,133 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-08 19:22:50,145 INFO L195 MainTranslator]: Completed translation [2018-12-08 19:22:50,145 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 07:22:50 WrapperNode [2018-12-08 19:22:50,146 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-08 19:22:50,146 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-08 19:22:50,146 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-08 19:22:50,146 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-08 19:22:50,181 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 07:22:50" (1/1) ... [2018-12-08 19:22:50,188 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 07:22:50" (1/1) ... [2018-12-08 19:22:50,195 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-08 19:22:50,195 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-08 19:22:50,195 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-08 19:22:50,195 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-08 19:22:50,202 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 07:22:50" (1/1) ... [2018-12-08 19:22:50,202 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 07:22:50" (1/1) ... [2018-12-08 19:22:50,203 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 07:22:50" (1/1) ... [2018-12-08 19:22:50,203 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 07:22:50" (1/1) ... [2018-12-08 19:22:50,208 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 07:22:50" (1/1) ... [2018-12-08 19:22:50,212 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 07:22:50" (1/1) ... [2018-12-08 19:22:50,213 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 07:22:50" (1/1) ... [2018-12-08 19:22:50,214 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-08 19:22:50,214 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-08 19:22:50,214 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-08 19:22:50,214 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-08 19:22:50,215 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 07:22:50" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2c2d9efa-1132-45ac-8433-7c8ef55ea37f/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 [2018-12-08 19:22:50,245 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2018-12-08 19:22:50,245 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2018-12-08 19:22:50,245 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-08 19:22:50,245 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-08 19:22:50,245 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_double [2018-12-08 19:22:50,245 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_double [2018-12-08 19:22:50,245 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-08 19:22:50,246 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-08 19:22:50,246 INFO L130 BoogieDeclarations]: Found specification of procedure fmax_double [2018-12-08 19:22:50,246 INFO L138 BoogieDeclarations]: Found implementation of procedure fmax_double [2018-12-08 19:22:50,246 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2018-12-08 19:22:50,246 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-08 19:22:50,246 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-08 19:22:50,246 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-08 19:22:50,246 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-12-08 19:22:50,246 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-08 19:22:50,389 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-08 19:22:50,389 INFO L280 CfgBuilder]: Removed 4 assue(true) statements. [2018-12-08 19:22:50,389 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 07:22:50 BoogieIcfgContainer [2018-12-08 19:22:50,389 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-08 19:22:50,390 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-08 19:22:50,390 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-08 19:22:50,392 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-08 19:22:50,392 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.12 07:22:49" (1/3) ... [2018-12-08 19:22:50,392 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f888806 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.12 07:22:50, skipping insertion in model container [2018-12-08 19:22:50,392 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 07:22:50" (2/3) ... [2018-12-08 19:22:50,392 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f888806 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.12 07:22:50, skipping insertion in model container [2018-12-08 19:22:50,393 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 07:22:50" (3/3) ... [2018-12-08 19:22:50,394 INFO L112 eAbstractionObserver]: Analyzing ICFG double_req_bl_1252b_false-unreach-call.c [2018-12-08 19:22:50,400 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-08 19:22:50,404 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-08 19:22:50,414 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-08 19:22:50,433 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-08 19:22:50,433 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-08 19:22:50,433 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-08 19:22:50,433 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-08 19:22:50,433 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-08 19:22:50,433 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-08 19:22:50,434 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-08 19:22:50,434 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-08 19:22:50,444 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2018-12-08 19:22:50,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-12-08 19:22:50,448 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 19:22:50,448 INFO L402 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] [2018-12-08 19:22:50,450 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-08 19:22:50,453 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 19:22:50,453 INFO L82 PathProgramCache]: Analyzing trace with hash 1757694217, now seen corresponding path program 1 times [2018-12-08 19:22:50,454 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-08 19:22:50,482 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 19:22:50,482 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 19:22:50,483 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 19:22:50,483 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-08 19:22:50,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 19:22:50,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 19:22:50,532 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-08 19:22:50,532 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-08 19:22:50,532 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-08 19:22:50,534 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-12-08 19:22:50,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-12-08 19:22:50,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-08 19:22:50,543 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 2 states. [2018-12-08 19:22:50,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 19:22:50,557 INFO L93 Difference]: Finished difference Result 79 states and 107 transitions. [2018-12-08 19:22:50,557 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-12-08 19:22:50,558 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 22 [2018-12-08 19:22:50,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 19:22:50,563 INFO L225 Difference]: With dead ends: 79 [2018-12-08 19:22:50,563 INFO L226 Difference]: Without dead ends: 40 [2018-12-08 19:22:50,565 INFO L631 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 [2018-12-08 19:22:50,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2018-12-08 19:22:50,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2018-12-08 19:22:50,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-12-08 19:22:50,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 48 transitions. [2018-12-08 19:22:50,589 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 48 transitions. Word has length 22 [2018-12-08 19:22:50,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 19:22:50,590 INFO L480 AbstractCegarLoop]: Abstraction has 40 states and 48 transitions. [2018-12-08 19:22:50,590 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-12-08 19:22:50,590 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 48 transitions. [2018-12-08 19:22:50,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-12-08 19:22:50,591 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 19:22:50,591 INFO L402 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] [2018-12-08 19:22:50,591 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-08 19:22:50,591 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 19:22:50,591 INFO L82 PathProgramCache]: Analyzing trace with hash 1795675250, now seen corresponding path program 1 times [2018-12-08 19:22:50,591 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-08 19:22:50,592 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 19:22:50,592 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 19:22:50,592 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 19:22:50,592 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-08 19:22:50,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 19:22:50,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 19:22:50,637 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-08 19:22:50,637 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-08 19:22:50,638 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-08 19:22:50,638 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-08 19:22:50,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-08 19:22:50,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-08 19:22:50,639 INFO L87 Difference]: Start difference. First operand 40 states and 48 transitions. Second operand 4 states. [2018-12-08 19:22:50,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 19:22:50,655 INFO L93 Difference]: Finished difference Result 59 states and 69 transitions. [2018-12-08 19:22:50,655 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-08 19:22:50,655 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2018-12-08 19:22:50,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 19:22:50,657 INFO L225 Difference]: With dead ends: 59 [2018-12-08 19:22:50,657 INFO L226 Difference]: Without dead ends: 44 [2018-12-08 19:22:50,658 INFO L631 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 [2018-12-08 19:22:50,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-12-08 19:22:50,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2018-12-08 19:22:50,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-12-08 19:22:50,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 53 transitions. [2018-12-08 19:22:50,663 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 53 transitions. Word has length 23 [2018-12-08 19:22:50,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 19:22:50,664 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 53 transitions. [2018-12-08 19:22:50,664 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-08 19:22:50,664 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 53 transitions. [2018-12-08 19:22:50,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-12-08 19:22:50,664 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 19:22:50,664 INFO L402 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] [2018-12-08 19:22:50,665 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-08 19:22:50,665 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 19:22:50,665 INFO L82 PathProgramCache]: Analyzing trace with hash 2106279408, now seen corresponding path program 1 times [2018-12-08 19:22:50,665 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-08 19:22:50,666 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 19:22:50,666 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 19:22:50,666 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 19:22:50,666 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-08 19:22:50,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 19:22:50,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 19:22:50,700 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-08 19:22:50,700 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-08 19:22:50,700 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-08 19:22:50,700 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-08 19:22:50,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-08 19:22:50,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-08 19:22:50,701 INFO L87 Difference]: Start difference. First operand 44 states and 53 transitions. Second operand 4 states. [2018-12-08 19:22:50,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 19:22:50,714 INFO L93 Difference]: Finished difference Result 63 states and 74 transitions. [2018-12-08 19:22:50,714 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-08 19:22:50,714 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 26 [2018-12-08 19:22:50,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 19:22:50,715 INFO L225 Difference]: With dead ends: 63 [2018-12-08 19:22:50,715 INFO L226 Difference]: Without dead ends: 48 [2018-12-08 19:22:50,716 INFO L631 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 [2018-12-08 19:22:50,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2018-12-08 19:22:50,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 44. [2018-12-08 19:22:50,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-12-08 19:22:50,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 53 transitions. [2018-12-08 19:22:50,720 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 53 transitions. Word has length 26 [2018-12-08 19:22:50,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 19:22:50,720 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 53 transitions. [2018-12-08 19:22:50,720 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-08 19:22:50,720 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 53 transitions. [2018-12-08 19:22:50,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-12-08 19:22:50,721 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 19:22:50,721 INFO L402 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] [2018-12-08 19:22:50,721 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-08 19:22:50,721 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 19:22:50,721 INFO L82 PathProgramCache]: Analyzing trace with hash 309328049, now seen corresponding path program 1 times [2018-12-08 19:22:50,721 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-08 19:22:50,722 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 19:22:50,722 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 19:22:50,722 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 19:22:50,722 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-08 19:22:50,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 19:22:50,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 19:22:50,757 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-12-08 19:22:50,774 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.12 07:22:50 BoogieIcfgContainer [2018-12-08 19:22:50,774 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-08 19:22:50,774 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-08 19:22:50,774 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-08 19:22:50,775 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-08 19:22:50,775 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 07:22:50" (3/4) ... [2018-12-08 19:22:50,777 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-12-08 19:22:50,777 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-08 19:22:50,778 INFO L168 Benchmark]: Toolchain (without parser) took 779.30 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 134.2 MB). Free memory was 962.4 MB in the beginning and 1.0 GB in the end (delta: -83.3 MB). Peak memory consumption was 50.9 MB. Max. memory is 11.5 GB. [2018-12-08 19:22:50,779 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 1.0 GB. Free memory is still 982.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-08 19:22:50,779 INFO L168 Benchmark]: CACSL2BoogieTranslator took 146.49 ms. Allocated memory is still 1.0 GB. Free memory was 962.4 MB in the beginning and 951.7 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-12-08 19:22:50,779 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.89 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 134.2 MB). Free memory was 951.7 MB in the beginning and 1.1 GB in the end (delta: -168.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 11.5 GB. [2018-12-08 19:22:50,780 INFO L168 Benchmark]: Boogie Preprocessor took 19.07 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. [2018-12-08 19:22:50,780 INFO L168 Benchmark]: RCFGBuilder took 174.85 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: 18.7 MB). Peak memory consumption was 18.7 MB. Max. memory is 11.5 GB. [2018-12-08 19:22:50,781 INFO L168 Benchmark]: TraceAbstraction took 384.56 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 56.1 MB). Peak memory consumption was 56.1 MB. Max. memory is 11.5 GB. [2018-12-08 19:22:50,781 INFO L168 Benchmark]: Witness Printer took 2.86 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-08 19:22:50,783 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 1.0 GB. Free memory is still 982.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 146.49 ms. Allocated memory is still 1.0 GB. Free memory was 962.4 MB in the beginning and 951.7 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 48.89 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 134.2 MB). Free memory was 951.7 MB in the beginning and 1.1 GB in the end (delta: -168.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 19.07 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. * RCFGBuilder took 174.85 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: 18.7 MB). Peak memory consumption was 18.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 384.56 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 56.1 MB). Peak memory consumption was 56.1 MB. Max. memory is 11.5 GB. * Witness Printer took 2.86 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 85]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 84, overapproximation of someUnaryDOUBLEoperation at line 80. Possible FailurePath: [L79] double x = 0.0; [L80] double y = -0.0; VAL [x=0] [L81] CALL, EXPR fmax_double(x, y) VAL [\old(x)=0, \old(y)=4293918726] [L52] CALL, EXPR __fpclassify_double(x) VAL [\old(x)=0] [L24] __uint32_t msw, lsw; VAL [\old(x)=0, x=0] [L27] ieee_double_shape_type ew_u; [L28] ew_u.value = (x) [L29] EXPR ew_u.parts.msw [L29] (msw) = ew_u.parts.msw [L30] EXPR ew_u.parts.lsw [L30] (lsw) = ew_u.parts.lsw [L33-L34] COND FALSE !((msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000)) VAL [\old(x)=0, lsw=1, msw=4293918721, x=0] [L36-L37] COND FALSE !((msw >= 0x00100000 && msw <= 0x7fefffff) || (msw >= 0x80100000 && msw <= 0xffefffff)) VAL [\old(x)=0, lsw=1, msw=4293918721, x=0] [L39-L40] COND FALSE !(( msw <= 0x000fffff) || (msw >= 0x80000000 && msw <= 0x800fffff)) VAL [\old(x)=0, lsw=1, msw=4293918721, x=0] [L43-L44] COND FALSE !((msw == 0x7ff00000 && lsw == 0x00000000) || (msw == 0xfff00000 && lsw == 0x00000000)) [L47] return 0; VAL [\old(x)=0, \result=0, lsw=1, msw=4293918721, x=0] [L52] RET, EXPR __fpclassify_double(x) VAL [\old(x)=0, \old(y)=4293918726, __fpclassify_double(x)=0, x=0, y=4293918726] [L52] COND TRUE __fpclassify_double(x) == 0 [L53] return y; VAL [\old(x)=0, \old(y)=4293918726, \result=4293918726, x=0, y=4293918726] [L81] RET, EXPR fmax_double(x, y) VAL [fmax_double(x, y)=4293918726, x=0, y=4293918726] [L81] double res = fmax_double(x, y); [L84] EXPR res == 0.0 && __signbit_double(res) == 0 VAL [res=4293918726, res == 0.0 && __signbit_double(res) == 0=0, x=0, y=4293918726] [L84] COND TRUE !(res == 0.0 && __signbit_double(res) == 0) [L85] __VERIFIER_error() VAL [res=4293918726, x=0, y=4293918726] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 44 locations, 1 error locations. UNSAFE Result, 0.3s OverallTime, 4 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 144 SDtfs, 0 SDslu, 172 SDs, 0 SdLazy, 17 SolverSat, 5 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, 0.0s 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 0.1.23-635dfa2 [2018-12-08 19:22:52,043 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-08 19:22:52,044 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-08 19:22:52,050 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-08 19:22:52,051 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-08 19:22:52,051 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-08 19:22:52,052 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-08 19:22:52,053 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-08 19:22:52,053 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-08 19:22:52,054 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-08 19:22:52,054 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-08 19:22:52,054 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-08 19:22:52,055 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-08 19:22:52,055 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-08 19:22:52,056 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-08 19:22:52,056 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-08 19:22:52,057 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-08 19:22:52,058 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-08 19:22:52,059 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-08 19:22:52,059 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-08 19:22:52,060 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-08 19:22:52,061 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-08 19:22:52,062 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-08 19:22:52,062 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-08 19:22:52,062 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-08 19:22:52,063 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-08 19:22:52,063 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-08 19:22:52,064 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-08 19:22:52,064 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-08 19:22:52,065 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-08 19:22:52,065 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-08 19:22:52,065 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-08 19:22:52,065 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-08 19:22:52,065 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-08 19:22:52,066 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-08 19:22:52,066 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-08 19:22:52,066 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_2c2d9efa-1132-45ac-8433-7c8ef55ea37f/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2018-12-08 19:22:52,074 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-08 19:22:52,074 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-08 19:22:52,075 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-08 19:22:52,075 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-08 19:22:52,075 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-08 19:22:52,075 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-08 19:22:52,075 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-08 19:22:52,075 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-08 19:22:52,075 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-12-08 19:22:52,075 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-08 19:22:52,076 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-08 19:22:52,076 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-08 19:22:52,076 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-08 19:22:52,076 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-08 19:22:52,076 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-08 19:22:52,076 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-08 19:22:52,077 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-08 19:22:52,077 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-12-08 19:22:52,077 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-12-08 19:22:52,077 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-08 19:22:52,077 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-08 19:22:52,077 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-08 19:22:52,077 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-08 19:22:52,077 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-08 19:22:52,077 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-08 19:22:52,078 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-08 19:22:52,078 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-08 19:22:52,078 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-08 19:22:52,078 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-08 19:22:52,078 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-08 19:22:52,078 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-08 19:22:52,078 INFO L133 SettingsManager]: * Trace refinement strategy=WALRUS [2018-12-08 19:22:52,078 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-08 19:22:52,079 INFO L133 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2018-12-08 19:22:52,079 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-12-08 19:22:52,079 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_2c2d9efa-1132-45ac-8433-7c8ef55ea37f/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 -> 6f57b560c2271100a3cc213cf38aa06905e4b86e [2018-12-08 19:22:52,098 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-08 19:22:52,108 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-08 19:22:52,111 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-08 19:22:52,112 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-08 19:22:52,112 INFO L276 PluginConnector]: CDTParser initialized [2018-12-08 19:22:52,113 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_2c2d9efa-1132-45ac-8433-7c8ef55ea37f/bin-2019/utaipan/../../sv-benchmarks/c/float-newlib/double_req_bl_1252b_false-unreach-call.c [2018-12-08 19:22:52,160 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_2c2d9efa-1132-45ac-8433-7c8ef55ea37f/bin-2019/utaipan/data/abe814d76/7d7c7c9ba0854a469c8cec4a0caed155/FLAGd767c1607 [2018-12-08 19:22:52,565 INFO L307 CDTParser]: Found 1 translation units. [2018-12-08 19:22:52,565 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_2c2d9efa-1132-45ac-8433-7c8ef55ea37f/sv-benchmarks/c/float-newlib/double_req_bl_1252b_false-unreach-call.c [2018-12-08 19:22:52,571 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_2c2d9efa-1132-45ac-8433-7c8ef55ea37f/bin-2019/utaipan/data/abe814d76/7d7c7c9ba0854a469c8cec4a0caed155/FLAGd767c1607 [2018-12-08 19:22:52,579 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_2c2d9efa-1132-45ac-8433-7c8ef55ea37f/bin-2019/utaipan/data/abe814d76/7d7c7c9ba0854a469c8cec4a0caed155 [2018-12-08 19:22:52,581 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-08 19:22:52,581 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-08 19:22:52,582 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-08 19:22:52,582 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-08 19:22:52,585 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-08 19:22:52,586 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.12 07:22:52" (1/1) ... [2018-12-08 19:22:52,588 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36a0bb1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 07:22:52, skipping insertion in model container [2018-12-08 19:22:52,588 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.12 07:22:52" (1/1) ... [2018-12-08 19:22:52,594 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-08 19:22:52,609 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-08 19:22:52,715 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-08 19:22:52,718 INFO L191 MainTranslator]: Completed pre-run [2018-12-08 19:22:52,737 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-08 19:22:52,753 INFO L195 MainTranslator]: Completed translation [2018-12-08 19:22:52,754 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 07:22:52 WrapperNode [2018-12-08 19:22:52,754 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-08 19:22:52,754 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-08 19:22:52,754 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-08 19:22:52,754 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-08 19:22:52,759 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 07:22:52" (1/1) ... [2018-12-08 19:22:52,766 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 07:22:52" (1/1) ... [2018-12-08 19:22:52,770 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-08 19:22:52,770 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-08 19:22:52,770 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-08 19:22:52,770 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-08 19:22:52,776 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 07:22:52" (1/1) ... [2018-12-08 19:22:52,776 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 07:22:52" (1/1) ... [2018-12-08 19:22:52,778 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 07:22:52" (1/1) ... [2018-12-08 19:22:52,778 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 07:22:52" (1/1) ... [2018-12-08 19:22:52,784 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 07:22:52" (1/1) ... [2018-12-08 19:22:52,815 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 07:22:52" (1/1) ... [2018-12-08 19:22:52,817 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 07:22:52" (1/1) ... [2018-12-08 19:22:52,819 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-08 19:22:52,819 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-08 19:22:52,820 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-08 19:22:52,820 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-08 19:22:52,820 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 07:22:52" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2c2d9efa-1132-45ac-8433-7c8ef55ea37f/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 [2018-12-08 19:22:52,849 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2018-12-08 19:22:52,849 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2018-12-08 19:22:52,849 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2018-12-08 19:22:52,849 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-08 19:22:52,849 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-08 19:22:52,849 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_double [2018-12-08 19:22:52,849 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_double [2018-12-08 19:22:52,850 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-08 19:22:52,850 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-08 19:22:52,850 INFO L130 BoogieDeclarations]: Found specification of procedure fmax_double [2018-12-08 19:22:52,850 INFO L138 BoogieDeclarations]: Found implementation of procedure fmax_double [2018-12-08 19:22:52,850 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-08 19:22:52,850 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2018-12-08 19:22:52,850 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-08 19:22:52,850 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-08 19:22:52,850 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-08 19:22:52,963 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-08 19:22:53,022 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-08 19:22:53,041 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-08 19:22:53,041 INFO L280 CfgBuilder]: Removed 4 assue(true) statements. [2018-12-08 19:22:53,041 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 07:22:53 BoogieIcfgContainer [2018-12-08 19:22:53,041 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-08 19:22:53,041 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-08 19:22:53,042 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-08 19:22:53,043 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-08 19:22:53,043 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.12 07:22:52" (1/3) ... [2018-12-08 19:22:53,044 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19bd4e64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.12 07:22:53, skipping insertion in model container [2018-12-08 19:22:53,044 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 07:22:52" (2/3) ... [2018-12-08 19:22:53,044 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19bd4e64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.12 07:22:53, skipping insertion in model container [2018-12-08 19:22:53,044 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 07:22:53" (3/3) ... [2018-12-08 19:22:53,045 INFO L112 eAbstractionObserver]: Analyzing ICFG double_req_bl_1252b_false-unreach-call.c [2018-12-08 19:22:53,051 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-08 19:22:53,055 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-08 19:22:53,063 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-08 19:22:53,081 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-08 19:22:53,082 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-08 19:22:53,082 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-08 19:22:53,082 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-08 19:22:53,082 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-08 19:22:53,082 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-08 19:22:53,082 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-08 19:22:53,082 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-08 19:22:53,082 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-08 19:22:53,092 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states. [2018-12-08 19:22:53,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-12-08 19:22:53,096 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 19:22:53,096 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 19:22:53,097 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-08 19:22:53,100 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 19:22:53,100 INFO L82 PathProgramCache]: Analyzing trace with hash 1896135752, now seen corresponding path program 1 times [2018-12-08 19:22:53,102 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-08 19:22:53,103 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2c2d9efa-1132-45ac-8433-7c8ef55ea37f/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 [2018-12-08 19:22:53,107 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 19:22:53,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 19:22:53,154 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 19:22:53,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 19:22:53,165 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-08 19:22:53,173 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-08 19:22:53,173 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-08 19:22:53,175 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-12-08 19:22:53,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-12-08 19:22:53,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-08 19:22:53,184 INFO L87 Difference]: Start difference. First operand 42 states. Second operand 2 states. [2018-12-08 19:22:53,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 19:22:53,197 INFO L93 Difference]: Finished difference Result 75 states and 103 transitions. [2018-12-08 19:22:53,197 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-12-08 19:22:53,198 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 21 [2018-12-08 19:22:53,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 19:22:53,205 INFO L225 Difference]: With dead ends: 75 [2018-12-08 19:22:53,206 INFO L226 Difference]: Without dead ends: 38 [2018-12-08 19:22:53,208 INFO L631 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 [2018-12-08 19:22:53,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2018-12-08 19:22:53,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2018-12-08 19:22:53,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2018-12-08 19:22:53,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 46 transitions. [2018-12-08 19:22:53,236 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 46 transitions. Word has length 21 [2018-12-08 19:22:53,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 19:22:53,236 INFO L480 AbstractCegarLoop]: Abstraction has 38 states and 46 transitions. [2018-12-08 19:22:53,236 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-12-08 19:22:53,236 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 46 transitions. [2018-12-08 19:22:53,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-12-08 19:22:53,237 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 19:22:53,237 INFO L402 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] [2018-12-08 19:22:53,238 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-08 19:22:53,238 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 19:22:53,238 INFO L82 PathProgramCache]: Analyzing trace with hash -944725945, now seen corresponding path program 1 times [2018-12-08 19:22:53,238 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-08 19:22:53,238 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2c2d9efa-1132-45ac-8433-7c8ef55ea37f/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 [2018-12-08 19:22:53,242 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 19:22:53,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 19:22:53,286 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 19:22:53,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 19:22:53,303 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-08 19:22:53,309 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-08 19:22:53,310 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-08 19:22:53,310 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-08 19:22:53,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-08 19:22:53,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-08 19:22:53,311 INFO L87 Difference]: Start difference. First operand 38 states and 46 transitions. Second operand 4 states. [2018-12-08 19:22:53,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 19:22:53,346 INFO L93 Difference]: Finished difference Result 56 states and 66 transitions. [2018-12-08 19:22:53,347 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-08 19:22:53,347 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22 [2018-12-08 19:22:53,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 19:22:53,349 INFO L225 Difference]: With dead ends: 56 [2018-12-08 19:22:53,349 INFO L226 Difference]: Without dead ends: 41 [2018-12-08 19:22:53,349 INFO L631 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 [2018-12-08 19:22:53,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-12-08 19:22:53,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2018-12-08 19:22:53,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-12-08 19:22:53,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 50 transitions. [2018-12-08 19:22:53,354 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 50 transitions. Word has length 22 [2018-12-08 19:22:53,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 19:22:53,355 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 50 transitions. [2018-12-08 19:22:53,355 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-08 19:22:53,355 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 50 transitions. [2018-12-08 19:22:53,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-12-08 19:22:53,355 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 19:22:53,355 INFO L402 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] [2018-12-08 19:22:53,356 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-08 19:22:53,356 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 19:22:53,356 INFO L82 PathProgramCache]: Analyzing trace with hash -190309307, now seen corresponding path program 1 times [2018-12-08 19:22:53,356 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-08 19:22:53,356 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2c2d9efa-1132-45ac-8433-7c8ef55ea37f/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 [2018-12-08 19:22:53,359 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 19:22:53,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 19:22:53,398 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 19:22:53,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 19:22:53,537 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-08 19:22:53,548 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-08 19:22:53,548 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-12-08 19:22:53,549 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-12-08 19:22:53,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-12-08 19:22:53,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-12-08 19:22:53,549 INFO L87 Difference]: Start difference. First operand 41 states and 50 transitions. Second operand 8 states. [2018-12-08 19:22:54,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 19:22:54,522 INFO L93 Difference]: Finished difference Result 63 states and 79 transitions. [2018-12-08 19:22:54,523 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-12-08 19:22:54,524 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 23 [2018-12-08 19:22:54,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 19:22:54,524 INFO L225 Difference]: With dead ends: 63 [2018-12-08 19:22:54,524 INFO L226 Difference]: Without dead ends: 43 [2018-12-08 19:22:54,525 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2018-12-08 19:22:54,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-12-08 19:22:54,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2018-12-08 19:22:54,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-12-08 19:22:54,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 52 transitions. [2018-12-08 19:22:54,529 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 52 transitions. Word has length 23 [2018-12-08 19:22:54,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 19:22:54,529 INFO L480 AbstractCegarLoop]: Abstraction has 43 states and 52 transitions. [2018-12-08 19:22:54,529 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-12-08 19:22:54,529 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 52 transitions. [2018-12-08 19:22:54,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-12-08 19:22:54,530 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 19:22:54,530 INFO L402 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] [2018-12-08 19:22:54,530 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-08 19:22:54,530 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 19:22:54,530 INFO L82 PathProgramCache]: Analyzing trace with hash 935715971, now seen corresponding path program 1 times [2018-12-08 19:22:54,530 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-08 19:22:54,530 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2c2d9efa-1132-45ac-8433-7c8ef55ea37f/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 [2018-12-08 19:22:54,533 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 19:22:54,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 19:22:54,568 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 19:22:54,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 19:22:54,577 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-08 19:22:54,584 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-08 19:22:54,584 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-08 19:22:54,584 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-08 19:22:54,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-08 19:22:54,584 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-08 19:22:54,584 INFO L87 Difference]: Start difference. First operand 43 states and 52 transitions. Second operand 4 states. [2018-12-08 19:22:54,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 19:22:54,614 INFO L93 Difference]: Finished difference Result 61 states and 72 transitions. [2018-12-08 19:22:54,614 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-08 19:22:54,614 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2018-12-08 19:22:54,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 19:22:54,615 INFO L225 Difference]: With dead ends: 61 [2018-12-08 19:22:54,615 INFO L226 Difference]: Without dead ends: 46 [2018-12-08 19:22:54,615 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-08 19:22:54,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2018-12-08 19:22:54,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 43. [2018-12-08 19:22:54,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-12-08 19:22:54,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 52 transitions. [2018-12-08 19:22:54,619 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 52 transitions. Word has length 24 [2018-12-08 19:22:54,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 19:22:54,620 INFO L480 AbstractCegarLoop]: Abstraction has 43 states and 52 transitions. [2018-12-08 19:22:54,620 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-08 19:22:54,620 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 52 transitions. [2018-12-08 19:22:54,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-12-08 19:22:54,620 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 19:22:54,620 INFO L402 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] [2018-12-08 19:22:54,621 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-08 19:22:54,621 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 19:22:54,621 INFO L82 PathProgramCache]: Analyzing trace with hash 696707201, now seen corresponding path program 1 times [2018-12-08 19:22:54,621 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-08 19:22:54,621 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2c2d9efa-1132-45ac-8433-7c8ef55ea37f/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 [2018-12-08 19:22:54,624 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 19:22:54,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 19:22:54,662 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 19:22:54,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 19:22:54,749 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-08 19:22:54,759 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-08 19:22:54,759 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-12-08 19:22:54,759 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-12-08 19:22:54,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-12-08 19:22:54,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-12-08 19:22:54,759 INFO L87 Difference]: Start difference. First operand 43 states and 52 transitions. Second operand 8 states. [2018-12-08 19:22:55,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 19:22:55,465 INFO L93 Difference]: Finished difference Result 62 states and 76 transitions. [2018-12-08 19:22:55,466 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-12-08 19:22:55,466 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 25 [2018-12-08 19:22:55,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 19:22:55,467 INFO L225 Difference]: With dead ends: 62 [2018-12-08 19:22:55,467 INFO L226 Difference]: Without dead ends: 42 [2018-12-08 19:22:55,467 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2018-12-08 19:22:55,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2018-12-08 19:22:55,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 40. [2018-12-08 19:22:55,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-12-08 19:22:55,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 47 transitions. [2018-12-08 19:22:55,470 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 47 transitions. Word has length 25 [2018-12-08 19:22:55,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 19:22:55,471 INFO L480 AbstractCegarLoop]: Abstraction has 40 states and 47 transitions. [2018-12-08 19:22:55,471 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-12-08 19:22:55,471 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 47 transitions. [2018-12-08 19:22:55,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-12-08 19:22:55,471 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 19:22:55,471 INFO L402 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] [2018-12-08 19:22:55,472 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-08 19:22:55,472 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 19:22:55,472 INFO L82 PathProgramCache]: Analyzing trace with hash -1230715632, now seen corresponding path program 1 times [2018-12-08 19:22:55,472 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-08 19:22:55,472 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2c2d9efa-1132-45ac-8433-7c8ef55ea37f/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 [2018-12-08 19:22:55,475 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 19:22:55,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 19:22:55,529 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 19:22:55,537 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-12-08 19:22:55,537 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-08 19:22:55,544 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-08 19:22:55,544 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-08 19:22:55,545 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-08 19:22:55,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-08 19:22:55,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-08 19:22:55,545 INFO L87 Difference]: Start difference. First operand 40 states and 47 transitions. Second operand 4 states. [2018-12-08 19:22:55,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 19:22:55,564 INFO L93 Difference]: Finished difference Result 58 states and 67 transitions. [2018-12-08 19:22:55,564 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-08 19:22:55,565 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2018-12-08 19:22:55,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 19:22:55,565 INFO L225 Difference]: With dead ends: 58 [2018-12-08 19:22:55,565 INFO L226 Difference]: Without dead ends: 43 [2018-12-08 19:22:55,566 INFO L631 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 [2018-12-08 19:22:55,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-12-08 19:22:55,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2018-12-08 19:22:55,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-12-08 19:22:55,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 51 transitions. [2018-12-08 19:22:55,569 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 51 transitions. Word has length 30 [2018-12-08 19:22:55,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 19:22:55,569 INFO L480 AbstractCegarLoop]: Abstraction has 43 states and 51 transitions. [2018-12-08 19:22:55,569 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-08 19:22:55,569 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 51 transitions. [2018-12-08 19:22:55,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-12-08 19:22:55,570 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 19:22:55,570 INFO L402 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] [2018-12-08 19:22:55,570 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-08 19:22:55,570 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 19:22:55,570 INFO L82 PathProgramCache]: Analyzing trace with hash -1937025982, now seen corresponding path program 1 times [2018-12-08 19:22:55,571 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-08 19:22:55,571 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2c2d9efa-1132-45ac-8433-7c8ef55ea37f/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 [2018-12-08 19:22:55,573 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 19:22:55,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 19:22:55,625 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 19:22:55,772 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-12-08 19:22:55,772 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-08 19:22:55,780 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-08 19:22:55,780 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-12-08 19:22:55,780 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-12-08 19:22:55,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-12-08 19:22:55,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-12-08 19:22:55,781 INFO L87 Difference]: Start difference. First operand 43 states and 51 transitions. Second operand 8 states. [2018-12-08 19:22:56,388 WARN L180 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 35 [2018-12-08 19:22:57,340 WARN L180 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 31 [2018-12-08 19:22:57,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 19:22:57,378 INFO L93 Difference]: Finished difference Result 63 states and 73 transitions. [2018-12-08 19:22:57,379 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-12-08 19:22:57,380 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 31 [2018-12-08 19:22:57,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 19:22:57,380 INFO L225 Difference]: With dead ends: 63 [2018-12-08 19:22:57,380 INFO L226 Difference]: Without dead ends: 43 [2018-12-08 19:22:57,381 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2018-12-08 19:22:57,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-12-08 19:22:57,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2018-12-08 19:22:57,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-12-08 19:22:57,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 50 transitions. [2018-12-08 19:22:57,386 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 50 transitions. Word has length 31 [2018-12-08 19:22:57,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 19:22:57,386 INFO L480 AbstractCegarLoop]: Abstraction has 43 states and 50 transitions. [2018-12-08 19:22:57,386 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-12-08 19:22:57,387 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 50 transitions. [2018-12-08 19:22:57,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-12-08 19:22:57,387 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 19:22:57,387 INFO L402 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, 1] [2018-12-08 19:22:57,388 INFO L423 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-08 19:22:57,388 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 19:22:57,388 INFO L82 PathProgramCache]: Analyzing trace with hash 1151102924, now seen corresponding path program 1 times [2018-12-08 19:22:57,388 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-08 19:22:57,388 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2c2d9efa-1132-45ac-8433-7c8ef55ea37f/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 [2018-12-08 19:22:57,391 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 19:22:57,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 19:22:57,445 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 19:22:57,452 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-12-08 19:22:57,453 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-08 19:22:57,460 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-08 19:22:57,460 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-08 19:22:57,461 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-08 19:22:57,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-08 19:22:57,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-08 19:22:57,461 INFO L87 Difference]: Start difference. First operand 43 states and 50 transitions. Second operand 4 states. [2018-12-08 19:22:57,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 19:22:57,478 INFO L93 Difference]: Finished difference Result 59 states and 67 transitions. [2018-12-08 19:22:57,479 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-08 19:22:57,479 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 32 [2018-12-08 19:22:57,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 19:22:57,479 INFO L225 Difference]: With dead ends: 59 [2018-12-08 19:22:57,479 INFO L226 Difference]: Without dead ends: 44 [2018-12-08 19:22:57,480 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-08 19:22:57,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-12-08 19:22:57,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 41. [2018-12-08 19:22:57,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-12-08 19:22:57,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 47 transitions. [2018-12-08 19:22:57,482 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 47 transitions. Word has length 32 [2018-12-08 19:22:57,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 19:22:57,483 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 47 transitions. [2018-12-08 19:22:57,483 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-08 19:22:57,483 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 47 transitions. [2018-12-08 19:22:57,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-12-08 19:22:57,483 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 19:22:57,484 INFO L402 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] [2018-12-08 19:22:57,484 INFO L423 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-08 19:22:57,484 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 19:22:57,484 INFO L82 PathProgramCache]: Analyzing trace with hash 1413761077, now seen corresponding path program 1 times [2018-12-08 19:22:57,484 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-08 19:22:57,484 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2c2d9efa-1132-45ac-8433-7c8ef55ea37f/bin-2019/utaipan/mathsat Starting monitored process 10 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with mathsat -unsat_core_generation=3 [2018-12-08 19:22:57,487 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 19:22:57,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 19:22:57,548 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 19:22:57,618 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-12-08 19:22:57,618 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-08 19:22:57,630 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-08 19:22:57,630 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-12-08 19:22:57,631 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-08 19:22:57,631 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-08 19:22:57,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-12-08 19:22:57,631 INFO L87 Difference]: Start difference. First operand 41 states and 47 transitions. Second operand 5 states. [2018-12-08 19:22:57,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 19:22:57,754 INFO L93 Difference]: Finished difference Result 57 states and 63 transitions. [2018-12-08 19:22:57,755 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-08 19:22:57,755 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 32 [2018-12-08 19:22:57,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 19:22:57,755 INFO L225 Difference]: With dead ends: 57 [2018-12-08 19:22:57,755 INFO L226 Difference]: Without dead ends: 41 [2018-12-08 19:22:57,756 INFO L631 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 [2018-12-08 19:22:57,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-12-08 19:22:57,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2018-12-08 19:22:57,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-12-08 19:22:57,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 46 transitions. [2018-12-08 19:22:57,758 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 46 transitions. Word has length 32 [2018-12-08 19:22:57,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 19:22:57,758 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 46 transitions. [2018-12-08 19:22:57,758 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-08 19:22:57,758 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 46 transitions. [2018-12-08 19:22:57,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-12-08 19:22:57,759 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 19:22:57,759 INFO L402 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] [2018-12-08 19:22:57,759 INFO L423 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-08 19:22:57,759 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 19:22:57,759 INFO L82 PathProgramCache]: Analyzing trace with hash 604414451, now seen corresponding path program 1 times [2018-12-08 19:22:57,759 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-08 19:22:57,760 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2c2d9efa-1132-45ac-8433-7c8ef55ea37f/bin-2019/utaipan/mathsat Starting monitored process 11 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with mathsat -unsat_core_generation=3 [2018-12-08 19:22:57,763 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 19:22:57,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 19:22:57,815 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 19:22:57,880 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-12-08 19:22:57,881 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-08 19:22:57,889 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-08 19:22:57,889 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-12-08 19:22:57,889 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-12-08 19:22:57,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-12-08 19:22:57,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-12-08 19:22:57,890 INFO L87 Difference]: Start difference. First operand 41 states and 46 transitions. Second operand 8 states. [2018-12-08 19:22:58,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 19:22:58,289 INFO L93 Difference]: Finished difference Result 48 states and 53 transitions. [2018-12-08 19:22:58,289 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-12-08 19:22:58,289 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 32 [2018-12-08 19:22:58,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 19:22:58,290 INFO L225 Difference]: With dead ends: 48 [2018-12-08 19:22:58,290 INFO L226 Difference]: Without dead ends: 45 [2018-12-08 19:22:58,290 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2018-12-08 19:22:58,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2018-12-08 19:22:58,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2018-12-08 19:22:58,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2018-12-08 19:22:58,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 50 transitions. [2018-12-08 19:22:58,293 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 50 transitions. Word has length 32 [2018-12-08 19:22:58,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 19:22:58,293 INFO L480 AbstractCegarLoop]: Abstraction has 45 states and 50 transitions. [2018-12-08 19:22:58,293 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-12-08 19:22:58,293 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 50 transitions. [2018-12-08 19:22:58,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-12-08 19:22:58,294 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 19:22:58,294 INFO L402 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, 1, 1] [2018-12-08 19:22:58,294 INFO L423 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-08 19:22:58,294 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 19:22:58,294 INFO L82 PathProgramCache]: Analyzing trace with hash 1607764478, now seen corresponding path program 1 times [2018-12-08 19:22:58,294 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-08 19:22:58,294 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2c2d9efa-1132-45ac-8433-7c8ef55ea37f/bin-2019/utaipan/mathsat Starting monitored process 12 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with mathsat -unsat_core_generation=3 [2018-12-08 19:22:58,303 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 19:22:58,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 19:22:58,355 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 19:22:58,471 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-12-08 19:22:58,471 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-08 19:22:58,480 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-08 19:22:58,480 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-12-08 19:22:58,481 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-12-08 19:22:58,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-12-08 19:22:58,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-12-08 19:22:58,481 INFO L87 Difference]: Start difference. First operand 45 states and 50 transitions. Second operand 8 states. [2018-12-08 19:22:59,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 19:22:59,191 INFO L93 Difference]: Finished difference Result 62 states and 66 transitions. [2018-12-08 19:22:59,192 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-12-08 19:22:59,192 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 33 [2018-12-08 19:22:59,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 19:22:59,192 INFO L225 Difference]: With dead ends: 62 [2018-12-08 19:22:59,192 INFO L226 Difference]: Without dead ends: 37 [2018-12-08 19:22:59,193 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2018-12-08 19:22:59,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2018-12-08 19:22:59,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2018-12-08 19:22:59,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-12-08 19:22:59,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 38 transitions. [2018-12-08 19:22:59,195 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 38 transitions. Word has length 33 [2018-12-08 19:22:59,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 19:22:59,195 INFO L480 AbstractCegarLoop]: Abstraction has 37 states and 38 transitions. [2018-12-08 19:22:59,195 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-12-08 19:22:59,195 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 38 transitions. [2018-12-08 19:22:59,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-12-08 19:22:59,196 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 19:22:59,196 INFO L402 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] [2018-12-08 19:22:59,196 INFO L423 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-08 19:22:59,196 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 19:22:59,196 INFO L82 PathProgramCache]: Analyzing trace with hash -329247760, now seen corresponding path program 1 times [2018-12-08 19:22:59,196 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-08 19:22:59,196 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2c2d9efa-1132-45ac-8433-7c8ef55ea37f/bin-2019/utaipan/mathsat Starting monitored process 13 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with mathsat -unsat_core_generation=3 [2018-12-08 19:22:59,199 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 19:22:59,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 19:22:59,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 19:22:59,429 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-12-08 19:22:59,454 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.12 07:22:59 BoogieIcfgContainer [2018-12-08 19:22:59,454 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-08 19:22:59,455 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-08 19:22:59,455 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-08 19:22:59,455 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-08 19:22:59,455 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 07:22:53" (3/4) ... [2018-12-08 19:22:59,456 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-12-08 19:22:59,497 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_2c2d9efa-1132-45ac-8433-7c8ef55ea37f/bin-2019/utaipan/witness.graphml [2018-12-08 19:22:59,497 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-08 19:22:59,497 INFO L168 Benchmark]: Toolchain (without parser) took 6916.36 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 193.5 MB). Free memory was 943.4 MB in the beginning and 1.1 GB in the end (delta: -172.5 MB). Peak memory consumption was 20.9 MB. Max. memory is 11.5 GB. [2018-12-08 19:22:59,498 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 972.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-08 19:22:59,498 INFO L168 Benchmark]: CACSL2BoogieTranslator took 171.61 ms. Allocated memory is still 1.0 GB. Free memory was 943.4 MB in the beginning and 932.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-12-08 19:22:59,498 INFO L168 Benchmark]: Boogie Procedure Inliner took 15.91 ms. Allocated memory is still 1.0 GB. Free memory is still 927.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-08 19:22:59,499 INFO L168 Benchmark]: Boogie Preprocessor took 49.07 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 125.8 MB). Free memory was 927.3 MB in the beginning and 1.1 GB in the end (delta: -193.4 MB). Peak memory consumption was 14.2 MB. Max. memory is 11.5 GB. [2018-12-08 19:22:59,499 INFO L168 Benchmark]: RCFGBuilder took 221.65 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: 24.8 MB). Peak memory consumption was 24.8 MB. Max. memory is 11.5 GB. [2018-12-08 19:22:59,499 INFO L168 Benchmark]: TraceAbstraction took 6412.93 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 67.6 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -27.2 MB). Peak memory consumption was 40.5 MB. Max. memory is 11.5 GB. [2018-12-08 19:22:59,500 INFO L168 Benchmark]: Witness Printer took 42.31 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: 7.1 MB). Peak memory consumption was 7.1 MB. Max. memory is 11.5 GB. [2018-12-08 19:22:59,501 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 972.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 171.61 ms. Allocated memory is still 1.0 GB. Free memory was 943.4 MB in the beginning and 932.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 15.91 ms. Allocated memory is still 1.0 GB. Free memory is still 927.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 49.07 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 125.8 MB). Free memory was 927.3 MB in the beginning and 1.1 GB in the end (delta: -193.4 MB). Peak memory consumption was 14.2 MB. Max. memory is 11.5 GB. * RCFGBuilder took 221.65 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: 24.8 MB). Peak memory consumption was 24.8 MB. Max. memory is 11.5 GB. * TraceAbstraction took 6412.93 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 67.6 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -27.2 MB). Peak memory consumption was 40.5 MB. Max. memory is 11.5 GB. * Witness Printer took 42.31 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: 7.1 MB). Peak memory consumption was 7.1 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 85]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L79] double x = 0.0; [L80] double y = -0.0; VAL [x=0.0, y=0.0] [L81] CALL, EXPR fmax_double(x, y) VAL [\old(x)=0.0, \old(y)=0.0] [L52] CALL, EXPR __fpclassify_double(x) VAL [\old(x)=0.0] [L24] __uint32_t msw, lsw; VAL [\old(x)=0.0, x=0.0] [L27] ieee_double_shape_type ew_u; [L28] ew_u.value = (x) [L29] EXPR ew_u.parts.msw [L29] (msw) = ew_u.parts.msw [L30] EXPR ew_u.parts.lsw [L30] (lsw) = ew_u.parts.lsw [L33-L34] COND TRUE (msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000) [L35] return 2; VAL [\old(x)=0.0, \result=2, lsw=0, msw=0, x=0.0] [L52] RET, EXPR __fpclassify_double(x) VAL [\old(x)=0.0, \old(y)=0.0, __fpclassify_double(x)=2, x=0.0, y=0.0] [L52] COND FALSE !(__fpclassify_double(x) == 0) [L54] CALL, EXPR __fpclassify_double(y) VAL [\old(x)=0.0] [L24] __uint32_t msw, lsw; VAL [\old(x)=0.0, x=0.0] [L27] ieee_double_shape_type ew_u; [L28] ew_u.value = (x) [L29] EXPR ew_u.parts.msw [L29] (msw) = ew_u.parts.msw [L30] EXPR ew_u.parts.lsw [L30] (lsw) = ew_u.parts.lsw [L33-L34] COND TRUE (msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000) [L35] return 2; VAL [\old(x)=0.0, \result=2, lsw=0, msw=-2147483648, x=0.0] [L54] RET, EXPR __fpclassify_double(y) VAL [\old(x)=0.0, \old(y)=0.0, __fpclassify_double(y)=2, x=0.0, y=0.0] [L54] COND FALSE !(__fpclassify_double(y) == 0) [L57] EXPR x > y ? x : y VAL [\old(x)=0.0, \old(y)=0.0, x=0.0, x > y ? x : y=0.0, y=0.0] [L57] return x > y ? x : y; [L81] RET, EXPR fmax_double(x, y) VAL [fmax_double(x, y)=0.0, x=0.0, y=0.0] [L81] double res = fmax_double(x, y); [L84] EXPR res == 0.0 && __signbit_double(res) == 0 VAL [res=0.0, res == 0.0 && __signbit_double(res) == 0=1, x=0.0, y=0.0] [L84] CALL, EXPR __signbit_double(res) VAL [\old(x)=0.0] [L61] __uint32_t msw; VAL [\old(x)=0.0, x=0.0] [L64] ieee_double_shape_type gh_u; [L65] gh_u.value = (x) [L66] EXPR gh_u.parts.msw [L66] (msw) = gh_u.parts.msw [L69] return (msw & 0x80000000) != 0; VAL [\old(x)=0.0, \result=1, msw=2147483648, x=0.0] [L84] RET, EXPR __signbit_double(res) VAL [__signbit_double(res)=1, res=0.0, res == 0.0 && __signbit_double(res) == 0=1, x=0.0, y=0.0] [L84] EXPR res == 0.0 && __signbit_double(res) == 0 VAL [__signbit_double(res)=1, res=0.0, res == 0.0 && __signbit_double(res) == 0=0, x=0.0, y=0.0] [L84] COND TRUE !(res == 0.0 && __signbit_double(res) == 0) [L85] __VERIFIER_error() VAL [res=0.0, x=0.0, y=0.0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 42 locations, 1 error locations. UNSAFE Result, 6.3s OverallTime, 12 OverallIterations, 2 TraceHistogramMax, 4.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 452 SDtfs, 177 SDslu, 1317 SDs, 0 SdLazy, 513 SolverSat, 11 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 315 GetRequests, 256 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=45occurred in iteration=10, 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, 11 MinimizatonAttempts, 8 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 345 NumberOfCodeBlocks, 345 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 294 ConstructedInterpolants, 36 QuantifiedInterpolants, 35757 SizeOfPredicates, 23 NumberOfNonLiveVariables, 957 ConjunctsInSsa, 65 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 PerfectInterpolantSequences, 36/36 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...