./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/double_req_bl_1232b_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_53ec94ed-0290-4300-8636-2f9e16358c5a/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_53ec94ed-0290-4300-8636-2f9e16358c5a/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_53ec94ed-0290-4300-8636-2f9e16358c5a/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_53ec94ed-0290-4300-8636-2f9e16358c5a/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1232b_false-unreach-call.c -s /tmp/vcloud-vcloud-master/worker/working_dir_53ec94ed-0290-4300-8636-2f9e16358c5a/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_53ec94ed-0290-4300-8636-2f9e16358c5a/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 064927d7c1e3d8158c8524deee46f65d988c7936 ........................................................................................................................................................................................................................................................................................................................................................................................................ 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_53ec94ed-0290-4300-8636-2f9e16358c5a/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_53ec94ed-0290-4300-8636-2f9e16358c5a/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_53ec94ed-0290-4300-8636-2f9e16358c5a/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_53ec94ed-0290-4300-8636-2f9e16358c5a/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1232b_false-unreach-call.c -s /tmp/vcloud-vcloud-master/worker/working_dir_53ec94ed-0290-4300-8636-2f9e16358c5a/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_53ec94ed-0290-4300-8636-2f9e16358c5a/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 064927d7c1e3d8158c8524deee46f65d988c7936 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 [2018-12-09 18:36:47,358 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-09 18:36:47,359 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-09 18:36:47,365 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-09 18:36:47,366 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-09 18:36:47,366 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-09 18:36:47,367 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-09 18:36:47,368 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-09 18:36:47,368 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-09 18:36:47,369 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-09 18:36:47,369 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-09 18:36:47,369 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-09 18:36:47,370 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-09 18:36:47,370 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-09 18:36:47,371 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-09 18:36:47,371 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-09 18:36:47,371 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-09 18:36:47,372 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-09 18:36:47,373 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-09 18:36:47,374 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-09 18:36:47,374 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-09 18:36:47,375 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-09 18:36:47,376 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-09 18:36:47,376 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-09 18:36:47,376 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-09 18:36:47,377 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-09 18:36:47,377 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-09 18:36:47,378 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-09 18:36:47,378 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-09 18:36:47,379 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-09 18:36:47,379 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-09 18:36:47,379 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-09 18:36:47,379 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-09 18:36:47,379 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-09 18:36:47,380 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-09 18:36:47,380 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-09 18:36:47,380 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_53ec94ed-0290-4300-8636-2f9e16358c5a/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-12-09 18:36:47,388 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-09 18:36:47,388 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-09 18:36:47,388 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-09 18:36:47,388 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-09 18:36:47,389 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-09 18:36:47,389 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-09 18:36:47,389 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-09 18:36:47,389 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-12-09 18:36:47,389 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-09 18:36:47,389 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-12-09 18:36:47,389 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-12-09 18:36:47,389 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-12-09 18:36:47,389 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-09 18:36:47,390 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-09 18:36:47,390 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-09 18:36:47,390 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-09 18:36:47,390 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-09 18:36:47,390 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-09 18:36:47,390 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-09 18:36:47,390 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-09 18:36:47,390 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-09 18:36:47,390 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-09 18:36:47,390 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-09 18:36:47,391 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-09 18:36:47,391 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-09 18:36:47,391 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-09 18:36:47,391 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-09 18:36:47,391 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-09 18:36:47,391 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-09 18:36:47,391 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-09 18:36:47,391 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-09 18:36:47,391 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-09 18:36:47,391 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-12-09 18:36:47,392 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-09 18:36:47,392 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-09 18:36:47,392 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-12-09 18:36:47,392 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_53ec94ed-0290-4300-8636-2f9e16358c5a/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 -> 064927d7c1e3d8158c8524deee46f65d988c7936 [2018-12-09 18:36:47,410 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-09 18:36:47,419 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-09 18:36:47,421 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-09 18:36:47,422 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-09 18:36:47,423 INFO L276 PluginConnector]: CDTParser initialized [2018-12-09 18:36:47,423 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_53ec94ed-0290-4300-8636-2f9e16358c5a/bin-2019/utaipan/../../sv-benchmarks/c/float-newlib/double_req_bl_1232b_false-unreach-call.c [2018-12-09 18:36:47,466 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_53ec94ed-0290-4300-8636-2f9e16358c5a/bin-2019/utaipan/data/9d8757c1f/59d1916f473548d8a887375121b865d2/FLAG4a61a580a [2018-12-09 18:36:47,842 INFO L307 CDTParser]: Found 1 translation units. [2018-12-09 18:36:47,843 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_53ec94ed-0290-4300-8636-2f9e16358c5a/sv-benchmarks/c/float-newlib/double_req_bl_1232b_false-unreach-call.c [2018-12-09 18:36:47,847 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_53ec94ed-0290-4300-8636-2f9e16358c5a/bin-2019/utaipan/data/9d8757c1f/59d1916f473548d8a887375121b865d2/FLAG4a61a580a [2018-12-09 18:36:47,855 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_53ec94ed-0290-4300-8636-2f9e16358c5a/bin-2019/utaipan/data/9d8757c1f/59d1916f473548d8a887375121b865d2 [2018-12-09 18:36:47,857 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-09 18:36:47,858 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-09 18:36:47,859 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-09 18:36:47,859 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-09 18:36:47,861 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-09 18:36:47,861 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 06:36:47" (1/1) ... [2018-12-09 18:36:47,863 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26c1f7bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:36:47, skipping insertion in model container [2018-12-09 18:36:47,863 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 06:36:47" (1/1) ... [2018-12-09 18:36:47,867 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-09 18:36:47,878 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-09 18:36:47,974 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 18:36:47,976 INFO L191 MainTranslator]: Completed pre-run [2018-12-09 18:36:47,993 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 18:36:48,005 INFO L195 MainTranslator]: Completed translation [2018-12-09 18:36:48,005 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:36:48 WrapperNode [2018-12-09 18:36:48,006 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-09 18:36:48,006 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-09 18:36:48,006 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-09 18:36:48,006 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-09 18:36:48,011 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:36:48" (1/1) ... [2018-12-09 18:36:48,017 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:36:48" (1/1) ... [2018-12-09 18:36:48,051 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-09 18:36:48,052 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-09 18:36:48,052 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-09 18:36:48,052 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-09 18:36:48,058 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:36:48" (1/1) ... [2018-12-09 18:36:48,058 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:36:48" (1/1) ... [2018-12-09 18:36:48,059 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:36:48" (1/1) ... [2018-12-09 18:36:48,060 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:36:48" (1/1) ... [2018-12-09 18:36:48,065 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:36:48" (1/1) ... [2018-12-09 18:36:48,068 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:36:48" (1/1) ... [2018-12-09 18:36:48,069 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:36:48" (1/1) ... [2018-12-09 18:36:48,070 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-09 18:36:48,070 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-09 18:36:48,070 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-09 18:36:48,070 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-09 18:36:48,071 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:36:48" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_53ec94ed-0290-4300-8636-2f9e16358c5a/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 [2018-12-09 18:36:48,100 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2018-12-09 18:36:48,101 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2018-12-09 18:36:48,101 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-09 18:36:48,101 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-09 18:36:48,101 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_double [2018-12-09 18:36:48,101 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_double [2018-12-09 18:36:48,101 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-09 18:36:48,101 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-09 18:36:48,101 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2018-12-09 18:36:48,101 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-09 18:36:48,101 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-09 18:36:48,101 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-09 18:36:48,101 INFO L130 BoogieDeclarations]: Found specification of procedure fmin_double [2018-12-09 18:36:48,101 INFO L138 BoogieDeclarations]: Found implementation of procedure fmin_double [2018-12-09 18:36:48,101 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-12-09 18:36:48,101 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-09 18:36:48,238 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-09 18:36:48,238 INFO L280 CfgBuilder]: Removed 4 assue(true) statements. [2018-12-09 18:36:48,238 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 06:36:48 BoogieIcfgContainer [2018-12-09 18:36:48,239 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-09 18:36:48,239 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-09 18:36:48,239 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-09 18:36:48,241 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-09 18:36:48,241 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 06:36:47" (1/3) ... [2018-12-09 18:36:48,241 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e351185 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 06:36:48, skipping insertion in model container [2018-12-09 18:36:48,241 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:36:48" (2/3) ... [2018-12-09 18:36:48,242 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e351185 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 06:36:48, skipping insertion in model container [2018-12-09 18:36:48,242 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 06:36:48" (3/3) ... [2018-12-09 18:36:48,243 INFO L112 eAbstractionObserver]: Analyzing ICFG double_req_bl_1232b_false-unreach-call.c [2018-12-09 18:36:48,248 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-09 18:36:48,253 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-09 18:36:48,262 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-09 18:36:48,279 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-09 18:36:48,279 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-09 18:36:48,279 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-09 18:36:48,279 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-09 18:36:48,279 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-09 18:36:48,279 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-09 18:36:48,279 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-09 18:36:48,279 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-09 18:36:48,289 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2018-12-09 18:36:48,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-12-09 18:36:48,292 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 18:36:48,293 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] [2018-12-09 18:36:48,294 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 18:36:48,297 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 18:36:48,297 INFO L82 PathProgramCache]: Analyzing trace with hash 2125018936, now seen corresponding path program 1 times [2018-12-09 18:36:48,299 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 18:36:48,327 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 18:36:48,328 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 18:36:48,328 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 18:36:48,328 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 18:36:48,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 18:36:48,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 18:36:48,376 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 18:36:48,377 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-09 18:36:48,377 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 18:36:48,379 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-12-09 18:36:48,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-12-09 18:36:48,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-09 18:36:48,388 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 2 states. [2018-12-09 18:36:48,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 18:36:48,402 INFO L93 Difference]: Finished difference Result 79 states and 107 transitions. [2018-12-09 18:36:48,402 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-12-09 18:36:48,402 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 22 [2018-12-09 18:36:48,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 18:36:48,408 INFO L225 Difference]: With dead ends: 79 [2018-12-09 18:36:48,408 INFO L226 Difference]: Without dead ends: 40 [2018-12-09 18:36:48,410 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 [2018-12-09 18:36:48,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2018-12-09 18:36:48,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2018-12-09 18:36:48,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-12-09 18:36:48,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 48 transitions. [2018-12-09 18:36:48,434 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 48 transitions. Word has length 22 [2018-12-09 18:36:48,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 18:36:48,434 INFO L480 AbstractCegarLoop]: Abstraction has 40 states and 48 transitions. [2018-12-09 18:36:48,434 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-12-09 18:36:48,434 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 48 transitions. [2018-12-09 18:36:48,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-12-09 18:36:48,435 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 18:36:48,435 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] [2018-12-09 18:36:48,435 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 18:36:48,436 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 18:36:48,436 INFO L82 PathProgramCache]: Analyzing trace with hash 2099930979, now seen corresponding path program 1 times [2018-12-09 18:36:48,436 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 18:36:48,436 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 18:36:48,437 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 18:36:48,437 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 18:36:48,437 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 18:36:48,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 18:36:48,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 18:36:48,484 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 18:36:48,484 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-09 18:36:48,484 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 18:36:48,485 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-09 18:36:48,485 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-09 18:36:48,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-09 18:36:48,486 INFO L87 Difference]: Start difference. First operand 40 states and 48 transitions. Second operand 4 states. [2018-12-09 18:36:48,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 18:36:48,508 INFO L93 Difference]: Finished difference Result 59 states and 69 transitions. [2018-12-09 18:36:48,508 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-09 18:36:48,508 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2018-12-09 18:36:48,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 18:36:48,511 INFO L225 Difference]: With dead ends: 59 [2018-12-09 18:36:48,511 INFO L226 Difference]: Without dead ends: 44 [2018-12-09 18:36:48,511 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 [2018-12-09 18:36:48,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-12-09 18:36:48,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2018-12-09 18:36:48,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-12-09 18:36:48,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 53 transitions. [2018-12-09 18:36:48,516 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 53 transitions. Word has length 23 [2018-12-09 18:36:48,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 18:36:48,517 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 53 transitions. [2018-12-09 18:36:48,517 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-09 18:36:48,517 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 53 transitions. [2018-12-09 18:36:48,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-12-09 18:36:48,517 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 18:36:48,517 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] [2018-12-09 18:36:48,518 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 18:36:48,518 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 18:36:48,518 INFO L82 PathProgramCache]: Analyzing trace with hash -2011933537, now seen corresponding path program 1 times [2018-12-09 18:36:48,518 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 18:36:48,518 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 18:36:48,518 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 18:36:48,519 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 18:36:48,519 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 18:36:48,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 18:36:48,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 18:36:48,560 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 18:36:48,560 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-09 18:36:48,560 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 18:36:48,561 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-09 18:36:48,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-09 18:36:48,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-09 18:36:48,561 INFO L87 Difference]: Start difference. First operand 44 states and 53 transitions. Second operand 4 states. [2018-12-09 18:36:48,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 18:36:48,575 INFO L93 Difference]: Finished difference Result 63 states and 74 transitions. [2018-12-09 18:36:48,575 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-09 18:36:48,575 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 26 [2018-12-09 18:36:48,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 18:36:48,576 INFO L225 Difference]: With dead ends: 63 [2018-12-09 18:36:48,576 INFO L226 Difference]: Without dead ends: 48 [2018-12-09 18:36:48,576 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 [2018-12-09 18:36:48,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2018-12-09 18:36:48,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 44. [2018-12-09 18:36:48,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-12-09 18:36:48,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 53 transitions. [2018-12-09 18:36:48,580 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 53 transitions. Word has length 26 [2018-12-09 18:36:48,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 18:36:48,580 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 53 transitions. [2018-12-09 18:36:48,580 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-09 18:36:48,580 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 53 transitions. [2018-12-09 18:36:48,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-12-09 18:36:48,581 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 18:36:48,581 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] [2018-12-09 18:36:48,581 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 18:36:48,581 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 18:36:48,581 INFO L82 PathProgramCache]: Analyzing trace with hash 486082400, now seen corresponding path program 1 times [2018-12-09 18:36:48,581 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 18:36:48,582 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 18:36:48,582 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 18:36:48,582 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 18:36:48,582 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 18:36:48,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 18:36:48,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 18:36:48,616 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-12-09 18:36:48,632 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 06:36:48 BoogieIcfgContainer [2018-12-09 18:36:48,632 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-09 18:36:48,633 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-09 18:36:48,633 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-09 18:36:48,633 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-09 18:36:48,633 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 06:36:48" (3/4) ... [2018-12-09 18:36:48,635 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-12-09 18:36:48,635 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-09 18:36:48,636 INFO L168 Benchmark]: Toolchain (without parser) took 778.24 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.8 MB). Free memory was 954.4 MB in the beginning and 1.1 GB in the end (delta: -100.4 MB). Peak memory consumption was 35.4 MB. Max. memory is 11.5 GB. [2018-12-09 18:36:48,637 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 979.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 18:36:48,637 INFO L168 Benchmark]: CACSL2BoogieTranslator took 147.10 ms. Allocated memory is still 1.0 GB. Free memory was 954.4 MB in the beginning and 943.6 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.8 MB. Max. memory is 11.5 GB. [2018-12-09 18:36:48,637 INFO L168 Benchmark]: Boogie Procedure Inliner took 45.51 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.8 MB). Free memory was 943.6 MB in the beginning and 1.1 GB in the end (delta: -190.5 MB). Peak memory consumption was 15.7 MB. Max. memory is 11.5 GB. [2018-12-09 18:36:48,638 INFO L168 Benchmark]: Boogie Preprocessor took 18.18 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: 3.5 MB). Peak memory consumption was 3.5 MB. Max. memory is 11.5 GB. [2018-12-09 18:36:48,638 INFO L168 Benchmark]: RCFGBuilder took 168.42 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: 22.1 MB). Peak memory consumption was 22.1 MB. Max. memory is 11.5 GB. [2018-12-09 18:36:48,638 INFO L168 Benchmark]: TraceAbstraction took 393.44 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: 50.2 MB). Peak memory consumption was 50.2 MB. Max. memory is 11.5 GB. [2018-12-09 18:36:48,638 INFO L168 Benchmark]: Witness Printer took 2.72 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: 3.5 MB). Peak memory consumption was 3.5 MB. Max. memory is 11.5 GB. [2018-12-09 18:36:48,640 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 979.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 147.10 ms. Allocated memory is still 1.0 GB. Free memory was 954.4 MB in the beginning and 943.6 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.8 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 45.51 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.8 MB). Free memory was 943.6 MB in the beginning and 1.1 GB in the end (delta: -190.5 MB). Peak memory consumption was 15.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 18.18 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: 3.5 MB). Peak memory consumption was 3.5 MB. Max. memory is 11.5 GB. * RCFGBuilder took 168.42 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: 22.1 MB). Peak memory consumption was 22.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 393.44 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: 50.2 MB). Peak memory consumption was 50.2 MB. Max. memory is 11.5 GB. * Witness Printer took 2.72 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: 3.5 MB). Peak memory consumption was 3.5 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 80]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 79, overapproximation of someUnaryDOUBLEoperation at line 74. Possible FailurePath: [L74] double x = -0.0; [L75] double y = 0.0; VAL [y=0] [L76] CALL, EXPR fmin_double(x, y) VAL [\old(x)=4293918727, \old(y)=0] [L46] CALL, EXPR __fpclassify_double(x) VAL [\old(x)=4293918727] [L19] __uint32_t msw, lsw; VAL [\old(x)=4293918727, x=4293918727] [L22] ieee_double_shape_type ew_u; [L23] ew_u.value = (x) [L24] EXPR ew_u.parts.msw [L24] (msw) = ew_u.parts.msw [L25] EXPR ew_u.parts.lsw [L25] (lsw) = ew_u.parts.lsw [L28-L29] COND FALSE !((msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000)) VAL [\old(x)=4293918727, lsw=1, msw=4293918721, x=4293918727] [L31-L32] COND FALSE !((msw >= 0x00100000 && msw <= 0x7fefffff) || (msw >= 0x80100000 && msw <= 0xffefffff)) VAL [\old(x)=4293918727, lsw=1, msw=4293918721, x=4293918727] [L34-L35] COND FALSE !(( msw <= 0x000fffff) || (msw >= 0x80000000 && msw <= 0x800fffff)) VAL [\old(x)=4293918727, lsw=1, msw=4293918721, x=4293918727] [L38-L39] COND FALSE !((msw == 0x7ff00000 && lsw == 0x00000000) || (msw == 0xfff00000 && lsw == 0x00000000)) [L42] return 0; VAL [\old(x)=4293918727, \result=0, lsw=1, msw=4293918721, x=4293918727] [L46] RET, EXPR __fpclassify_double(x) VAL [\old(x)=4293918727, \old(y)=0, __fpclassify_double(x)=0, x=4293918727, y=0] [L46] COND TRUE __fpclassify_double(x) == 0 [L47] return y; VAL [\old(x)=4293918727, \old(y)=0, \result=0, x=4293918727, y=0] [L76] RET, EXPR fmin_double(x, y) VAL [fmin_double(x, y)=0, x=4293918727, y=0] [L76] double res = fmin_double(x, y); [L79] EXPR res == -0.0 && __signbit_double(res) == 1 VAL [res=0, res == -0.0 && __signbit_double(res) == 1=0, x=4293918727, y=0] [L79] COND TRUE !(res == -0.0 && __signbit_double(res) == 1) [L80] __VERIFIER_error() VAL [res=0, x=4293918727, y=0] - 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 [2018-12-09 18:36:49,975 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-09 18:36:49,976 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-09 18:36:49,983 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-09 18:36:49,983 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-09 18:36:49,983 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-09 18:36:49,984 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-09 18:36:49,985 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-09 18:36:49,985 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-09 18:36:49,986 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-09 18:36:49,986 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-09 18:36:49,986 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-09 18:36:49,987 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-09 18:36:49,987 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-09 18:36:49,988 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-09 18:36:49,988 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-09 18:36:49,988 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-09 18:36:49,989 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-09 18:36:49,990 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-09 18:36:49,991 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-09 18:36:49,992 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-09 18:36:49,992 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-09 18:36:49,993 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-09 18:36:49,993 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-09 18:36:49,993 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-09 18:36:49,994 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-09 18:36:49,994 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-09 18:36:49,995 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-09 18:36:49,995 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-09 18:36:49,996 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-09 18:36:49,996 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-09 18:36:49,996 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-09 18:36:49,996 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-09 18:36:49,996 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-09 18:36:49,997 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-09 18:36:49,997 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-09 18:36:49,997 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_53ec94ed-0290-4300-8636-2f9e16358c5a/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2018-12-09 18:36:50,005 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-09 18:36:50,005 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-09 18:36:50,005 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-09 18:36:50,005 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-09 18:36:50,006 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-09 18:36:50,006 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-09 18:36:50,006 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-09 18:36:50,006 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-09 18:36:50,006 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-12-09 18:36:50,006 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-09 18:36:50,006 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-09 18:36:50,006 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-09 18:36:50,006 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-09 18:36:50,007 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-09 18:36:50,007 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-09 18:36:50,007 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-09 18:36:50,007 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-09 18:36:50,007 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-12-09 18:36:50,007 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-12-09 18:36:50,007 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-09 18:36:50,007 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-09 18:36:50,007 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-09 18:36:50,007 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-09 18:36:50,007 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-09 18:36:50,007 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-09 18:36:50,007 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-09 18:36:50,008 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-09 18:36:50,008 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-09 18:36:50,008 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-09 18:36:50,008 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-09 18:36:50,008 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-09 18:36:50,008 INFO L133 SettingsManager]: * Trace refinement strategy=WALRUS [2018-12-09 18:36:50,008 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-09 18:36:50,008 INFO L133 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2018-12-09 18:36:50,008 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-12-09 18:36:50,008 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_53ec94ed-0290-4300-8636-2f9e16358c5a/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 -> 064927d7c1e3d8158c8524deee46f65d988c7936 [2018-12-09 18:36:50,025 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-09 18:36:50,033 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-09 18:36:50,035 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-09 18:36:50,036 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-09 18:36:50,036 INFO L276 PluginConnector]: CDTParser initialized [2018-12-09 18:36:50,036 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_53ec94ed-0290-4300-8636-2f9e16358c5a/bin-2019/utaipan/../../sv-benchmarks/c/float-newlib/double_req_bl_1232b_false-unreach-call.c [2018-12-09 18:36:50,072 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_53ec94ed-0290-4300-8636-2f9e16358c5a/bin-2019/utaipan/data/a810ca923/132817affc0d4241a3a380a2d7d2cc85/FLAG8214e11d2 [2018-12-09 18:36:50,449 INFO L307 CDTParser]: Found 1 translation units. [2018-12-09 18:36:50,449 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_53ec94ed-0290-4300-8636-2f9e16358c5a/sv-benchmarks/c/float-newlib/double_req_bl_1232b_false-unreach-call.c [2018-12-09 18:36:50,453 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_53ec94ed-0290-4300-8636-2f9e16358c5a/bin-2019/utaipan/data/a810ca923/132817affc0d4241a3a380a2d7d2cc85/FLAG8214e11d2 [2018-12-09 18:36:50,821 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_53ec94ed-0290-4300-8636-2f9e16358c5a/bin-2019/utaipan/data/a810ca923/132817affc0d4241a3a380a2d7d2cc85 [2018-12-09 18:36:50,827 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-09 18:36:50,829 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-09 18:36:50,830 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-09 18:36:50,830 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-09 18:36:50,835 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-09 18:36:50,835 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 06:36:50" (1/1) ... [2018-12-09 18:36:50,837 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@426f976d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:36:50, skipping insertion in model container [2018-12-09 18:36:50,837 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 06:36:50" (1/1) ... [2018-12-09 18:36:50,841 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-09 18:36:50,851 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-09 18:36:50,944 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 18:36:50,947 INFO L191 MainTranslator]: Completed pre-run [2018-12-09 18:36:50,964 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 18:36:50,980 INFO L195 MainTranslator]: Completed translation [2018-12-09 18:36:50,980 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:36:50 WrapperNode [2018-12-09 18:36:50,981 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-09 18:36:50,981 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-09 18:36:50,981 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-09 18:36:50,981 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-09 18:36:50,986 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:36:50" (1/1) ... [2018-12-09 18:36:50,992 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:36:50" (1/1) ... [2018-12-09 18:36:50,996 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-09 18:36:50,996 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-09 18:36:50,996 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-09 18:36:50,996 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-09 18:36:51,002 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:36:50" (1/1) ... [2018-12-09 18:36:51,002 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:36:50" (1/1) ... [2018-12-09 18:36:51,004 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:36:50" (1/1) ... [2018-12-09 18:36:51,004 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:36:50" (1/1) ... [2018-12-09 18:36:51,011 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:36:50" (1/1) ... [2018-12-09 18:36:51,042 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:36:50" (1/1) ... [2018-12-09 18:36:51,043 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:36:50" (1/1) ... [2018-12-09 18:36:51,045 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-09 18:36:51,045 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-09 18:36:51,045 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-09 18:36:51,045 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-09 18:36:51,046 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:36:50" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_53ec94ed-0290-4300-8636-2f9e16358c5a/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 [2018-12-09 18:36:51,076 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2018-12-09 18:36:51,076 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2018-12-09 18:36:51,076 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2018-12-09 18:36:51,076 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-09 18:36:51,077 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-09 18:36:51,077 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_double [2018-12-09 18:36:51,077 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_double [2018-12-09 18:36:51,077 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-09 18:36:51,077 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-09 18:36:51,077 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-09 18:36:51,077 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2018-12-09 18:36:51,077 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-09 18:36:51,077 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-09 18:36:51,078 INFO L130 BoogieDeclarations]: Found specification of procedure fmin_double [2018-12-09 18:36:51,078 INFO L138 BoogieDeclarations]: Found implementation of procedure fmin_double [2018-12-09 18:36:51,078 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-09 18:36:51,198 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 18:36:51,233 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 18:36:51,271 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-09 18:36:51,271 INFO L280 CfgBuilder]: Removed 4 assue(true) statements. [2018-12-09 18:36:51,271 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 06:36:51 BoogieIcfgContainer [2018-12-09 18:36:51,272 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-09 18:36:51,272 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-09 18:36:51,272 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-09 18:36:51,274 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-09 18:36:51,274 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 06:36:50" (1/3) ... [2018-12-09 18:36:51,274 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ab85715 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 06:36:51, skipping insertion in model container [2018-12-09 18:36:51,274 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:36:50" (2/3) ... [2018-12-09 18:36:51,274 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ab85715 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 06:36:51, skipping insertion in model container [2018-12-09 18:36:51,275 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 06:36:51" (3/3) ... [2018-12-09 18:36:51,276 INFO L112 eAbstractionObserver]: Analyzing ICFG double_req_bl_1232b_false-unreach-call.c [2018-12-09 18:36:51,281 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-09 18:36:51,285 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-09 18:36:51,294 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-09 18:36:51,310 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-09 18:36:51,310 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-09 18:36:51,311 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-09 18:36:51,311 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-09 18:36:51,311 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-09 18:36:51,311 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-09 18:36:51,311 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-09 18:36:51,311 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-09 18:36:51,311 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-09 18:36:51,320 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states. [2018-12-09 18:36:51,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-12-09 18:36:51,324 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 18:36:51,324 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] [2018-12-09 18:36:51,326 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 18:36:51,330 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 18:36:51,330 INFO L82 PathProgramCache]: Analyzing trace with hash -397395125, now seen corresponding path program 1 times [2018-12-09 18:36:51,332 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-09 18:36:51,333 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_53ec94ed-0290-4300-8636-2f9e16358c5a/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 [2018-12-09 18:36:51,337 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 18:36:51,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 18:36:51,378 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 18:36:51,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 18:36:51,389 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 18:36:51,397 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 18:36:51,397 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-09 18:36:51,399 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-12-09 18:36:51,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-12-09 18:36:51,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-09 18:36:51,408 INFO L87 Difference]: Start difference. First operand 42 states. Second operand 2 states. [2018-12-09 18:36:51,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 18:36:51,421 INFO L93 Difference]: Finished difference Result 75 states and 103 transitions. [2018-12-09 18:36:51,421 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-12-09 18:36:51,422 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 21 [2018-12-09 18:36:51,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 18:36:51,427 INFO L225 Difference]: With dead ends: 75 [2018-12-09 18:36:51,427 INFO L226 Difference]: Without dead ends: 38 [2018-12-09 18:36:51,429 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 [2018-12-09 18:36:51,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2018-12-09 18:36:51,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2018-12-09 18:36:51,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2018-12-09 18:36:51,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 46 transitions. [2018-12-09 18:36:51,454 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 46 transitions. Word has length 21 [2018-12-09 18:36:51,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 18:36:51,455 INFO L480 AbstractCegarLoop]: Abstraction has 38 states and 46 transitions. [2018-12-09 18:36:51,455 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-12-09 18:36:51,455 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 46 transitions. [2018-12-09 18:36:51,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-12-09 18:36:51,456 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 18:36:51,457 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] [2018-12-09 18:36:51,457 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 18:36:51,457 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 18:36:51,457 INFO L82 PathProgramCache]: Analyzing trace with hash -2145002868, now seen corresponding path program 1 times [2018-12-09 18:36:51,458 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-09 18:36:51,458 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_53ec94ed-0290-4300-8636-2f9e16358c5a/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 [2018-12-09 18:36:51,465 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 18:36:51,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 18:36:51,508 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 18:36:51,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 18:36:51,524 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 18:36:51,535 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 18:36:51,536 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-09 18:36:51,536 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-09 18:36:51,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-09 18:36:51,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-09 18:36:51,537 INFO L87 Difference]: Start difference. First operand 38 states and 46 transitions. Second operand 4 states. [2018-12-09 18:36:51,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 18:36:51,582 INFO L93 Difference]: Finished difference Result 56 states and 66 transitions. [2018-12-09 18:36:51,582 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-09 18:36:51,582 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22 [2018-12-09 18:36:51,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 18:36:51,584 INFO L225 Difference]: With dead ends: 56 [2018-12-09 18:36:51,584 INFO L226 Difference]: Without dead ends: 41 [2018-12-09 18:36:51,585 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 [2018-12-09 18:36:51,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-12-09 18:36:51,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2018-12-09 18:36:51,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-12-09 18:36:51,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 50 transitions. [2018-12-09 18:36:51,590 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 50 transitions. Word has length 22 [2018-12-09 18:36:51,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 18:36:51,591 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 50 transitions. [2018-12-09 18:36:51,591 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-09 18:36:51,591 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 50 transitions. [2018-12-09 18:36:51,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-12-09 18:36:51,591 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 18:36:51,592 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] [2018-12-09 18:36:51,592 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 18:36:51,592 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 18:36:51,592 INFO L82 PathProgramCache]: Analyzing trace with hash -1859452024, now seen corresponding path program 1 times [2018-12-09 18:36:51,592 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-09 18:36:51,592 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_53ec94ed-0290-4300-8636-2f9e16358c5a/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 [2018-12-09 18:36:51,596 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 18:36:51,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 18:36:51,634 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 18:36:51,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 18:36:51,780 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 18:36:51,787 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 18:36:51,787 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-12-09 18:36:51,788 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-12-09 18:36:51,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-12-09 18:36:51,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-12-09 18:36:51,788 INFO L87 Difference]: Start difference. First operand 41 states and 50 transitions. Second operand 8 states. [2018-12-09 18:36:52,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 18:36:52,552 INFO L93 Difference]: Finished difference Result 63 states and 79 transitions. [2018-12-09 18:36:52,553 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-12-09 18:36:52,553 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 23 [2018-12-09 18:36:52,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 18:36:52,554 INFO L225 Difference]: With dead ends: 63 [2018-12-09 18:36:52,554 INFO L226 Difference]: Without dead ends: 43 [2018-12-09 18:36:52,555 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 [2018-12-09 18:36:52,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-12-09 18:36:52,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2018-12-09 18:36:52,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-12-09 18:36:52,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 52 transitions. [2018-12-09 18:36:52,559 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 52 transitions. Word has length 23 [2018-12-09 18:36:52,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 18:36:52,559 INFO L480 AbstractCegarLoop]: Abstraction has 43 states and 52 transitions. [2018-12-09 18:36:52,559 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-12-09 18:36:52,559 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 52 transitions. [2018-12-09 18:36:52,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-12-09 18:36:52,560 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 18:36:52,560 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] [2018-12-09 18:36:52,560 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 18:36:52,560 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 18:36:52,560 INFO L82 PathProgramCache]: Analyzing trace with hash 1911602824, now seen corresponding path program 1 times [2018-12-09 18:36:52,560 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-09 18:36:52,561 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_53ec94ed-0290-4300-8636-2f9e16358c5a/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 [2018-12-09 18:36:52,563 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 18:36:52,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 18:36:52,598 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 18:36:52,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 18:36:52,609 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 18:36:52,616 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 18:36:52,616 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-09 18:36:52,616 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-09 18:36:52,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-09 18:36:52,616 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-09 18:36:52,616 INFO L87 Difference]: Start difference. First operand 43 states and 52 transitions. Second operand 4 states. [2018-12-09 18:36:52,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 18:36:52,644 INFO L93 Difference]: Finished difference Result 61 states and 72 transitions. [2018-12-09 18:36:52,645 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-09 18:36:52,645 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2018-12-09 18:36:52,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 18:36:52,645 INFO L225 Difference]: With dead ends: 61 [2018-12-09 18:36:52,646 INFO L226 Difference]: Without dead ends: 46 [2018-12-09 18:36:52,646 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 [2018-12-09 18:36:52,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2018-12-09 18:36:52,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 43. [2018-12-09 18:36:52,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-12-09 18:36:52,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 52 transitions. [2018-12-09 18:36:52,650 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 52 transitions. Word has length 24 [2018-12-09 18:36:52,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 18:36:52,650 INFO L480 AbstractCegarLoop]: Abstraction has 43 states and 52 transitions. [2018-12-09 18:36:52,650 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-09 18:36:52,650 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 52 transitions. [2018-12-09 18:36:52,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-12-09 18:36:52,650 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 18:36:52,650 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] [2018-12-09 18:36:52,651 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 18:36:52,651 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 18:36:52,651 INFO L82 PathProgramCache]: Analyzing trace with hash 2064132100, now seen corresponding path program 1 times [2018-12-09 18:36:52,651 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-09 18:36:52,651 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_53ec94ed-0290-4300-8636-2f9e16358c5a/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 [2018-12-09 18:36:52,654 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 18:36:52,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 18:36:52,691 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 18:36:52,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 18:36:52,819 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 18:36:52,826 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 18:36:52,826 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-12-09 18:36:52,826 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-12-09 18:36:52,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-12-09 18:36:52,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-12-09 18:36:52,827 INFO L87 Difference]: Start difference. First operand 43 states and 52 transitions. Second operand 8 states. [2018-12-09 18:36:53,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 18:36:53,772 INFO L93 Difference]: Finished difference Result 62 states and 76 transitions. [2018-12-09 18:36:53,774 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-12-09 18:36:53,774 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 25 [2018-12-09 18:36:53,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 18:36:53,775 INFO L225 Difference]: With dead ends: 62 [2018-12-09 18:36:53,775 INFO L226 Difference]: Without dead ends: 42 [2018-12-09 18:36:53,775 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2018-12-09 18:36:53,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2018-12-09 18:36:53,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 40. [2018-12-09 18:36:53,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-12-09 18:36:53,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 47 transitions. [2018-12-09 18:36:53,780 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 47 transitions. Word has length 25 [2018-12-09 18:36:53,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 18:36:53,780 INFO L480 AbstractCegarLoop]: Abstraction has 40 states and 47 transitions. [2018-12-09 18:36:53,780 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-12-09 18:36:53,780 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 47 transitions. [2018-12-09 18:36:53,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-12-09 18:36:53,781 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 18:36:53,781 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] [2018-12-09 18:36:53,782 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 18:36:53,782 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 18:36:53,782 INFO L82 PathProgramCache]: Analyzing trace with hash 1438845801, now seen corresponding path program 1 times [2018-12-09 18:36:53,783 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-09 18:36:53,783 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_53ec94ed-0290-4300-8636-2f9e16358c5a/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 [2018-12-09 18:36:53,786 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 18:36:53,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 18:36:53,838 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 18:36:53,849 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-12-09 18:36:53,850 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 18:36:53,858 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 18:36:53,858 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-09 18:36:53,858 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-09 18:36:53,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-09 18:36:53,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-09 18:36:53,859 INFO L87 Difference]: Start difference. First operand 40 states and 47 transitions. Second operand 4 states. [2018-12-09 18:36:53,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 18:36:53,896 INFO L93 Difference]: Finished difference Result 58 states and 67 transitions. [2018-12-09 18:36:53,897 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-09 18:36:53,897 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2018-12-09 18:36:53,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 18:36:53,898 INFO L225 Difference]: With dead ends: 58 [2018-12-09 18:36:53,898 INFO L226 Difference]: Without dead ends: 43 [2018-12-09 18:36:53,898 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 [2018-12-09 18:36:53,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-12-09 18:36:53,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2018-12-09 18:36:53,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-12-09 18:36:53,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 51 transitions. [2018-12-09 18:36:53,901 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 51 transitions. Word has length 30 [2018-12-09 18:36:53,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 18:36:53,901 INFO L480 AbstractCegarLoop]: Abstraction has 43 states and 51 transitions. [2018-12-09 18:36:53,902 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-09 18:36:53,902 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 51 transitions. [2018-12-09 18:36:53,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-12-09 18:36:53,902 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 18:36:53,902 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] [2018-12-09 18:36:53,902 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 18:36:53,902 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 18:36:53,903 INFO L82 PathProgramCache]: Analyzing trace with hash 394703345, now seen corresponding path program 1 times [2018-12-09 18:36:53,903 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-09 18:36:53,903 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_53ec94ed-0290-4300-8636-2f9e16358c5a/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 [2018-12-09 18:36:53,906 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 18:36:53,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 18:36:53,959 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 18:36:54,094 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-12-09 18:36:54,094 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 18:36:54,102 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 18:36:54,102 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-12-09 18:36:54,102 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-12-09 18:36:54,102 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-12-09 18:36:54,102 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-12-09 18:36:54,102 INFO L87 Difference]: Start difference. First operand 43 states and 51 transitions. Second operand 8 states. [2018-12-09 18:36:54,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 18:36:54,986 INFO L93 Difference]: Finished difference Result 63 states and 73 transitions. [2018-12-09 18:36:54,987 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-12-09 18:36:54,987 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 31 [2018-12-09 18:36:54,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 18:36:54,987 INFO L225 Difference]: With dead ends: 63 [2018-12-09 18:36:54,988 INFO L226 Difference]: Without dead ends: 43 [2018-12-09 18:36:54,988 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2018-12-09 18:36:54,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-12-09 18:36:54,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2018-12-09 18:36:54,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-12-09 18:36:54,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 50 transitions. [2018-12-09 18:36:54,991 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 50 transitions. Word has length 31 [2018-12-09 18:36:54,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 18:36:54,991 INFO L480 AbstractCegarLoop]: Abstraction has 43 states and 50 transitions. [2018-12-09 18:36:54,991 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-12-09 18:36:54,991 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 50 transitions. [2018-12-09 18:36:54,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-12-09 18:36:54,992 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 18:36:54,992 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] [2018-12-09 18:36:54,992 INFO L423 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 18:36:54,992 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 18:36:54,992 INFO L82 PathProgramCache]: Analyzing trace with hash 1599971557, now seen corresponding path program 1 times [2018-12-09 18:36:54,992 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-09 18:36:54,993 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_53ec94ed-0290-4300-8636-2f9e16358c5a/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 [2018-12-09 18:36:54,995 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 18:36:55,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 18:36:55,046 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 18:36:55,053 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-12-09 18:36:55,053 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 18:36:55,060 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 18:36:55,061 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-09 18:36:55,061 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-09 18:36:55,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-09 18:36:55,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-09 18:36:55,061 INFO L87 Difference]: Start difference. First operand 43 states and 50 transitions. Second operand 4 states. [2018-12-09 18:36:55,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 18:36:55,096 INFO L93 Difference]: Finished difference Result 59 states and 67 transitions. [2018-12-09 18:36:55,096 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-09 18:36:55,097 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 32 [2018-12-09 18:36:55,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 18:36:55,097 INFO L225 Difference]: With dead ends: 59 [2018-12-09 18:36:55,097 INFO L226 Difference]: Without dead ends: 44 [2018-12-09 18:36:55,098 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 [2018-12-09 18:36:55,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-12-09 18:36:55,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 41. [2018-12-09 18:36:55,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-12-09 18:36:55,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 47 transitions. [2018-12-09 18:36:55,101 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 47 transitions. Word has length 32 [2018-12-09 18:36:55,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 18:36:55,101 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 47 transitions. [2018-12-09 18:36:55,101 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-09 18:36:55,101 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 47 transitions. [2018-12-09 18:36:55,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-12-09 18:36:55,102 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 18:36:55,102 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] [2018-12-09 18:36:55,102 INFO L423 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 18:36:55,103 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 18:36:55,103 INFO L82 PathProgramCache]: Analyzing trace with hash 1200719566, now seen corresponding path program 1 times [2018-12-09 18:36:55,103 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-09 18:36:55,103 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_53ec94ed-0290-4300-8636-2f9e16358c5a/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 [2018-12-09 18:36:55,106 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 18:36:55,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 18:36:55,160 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 18:36:55,218 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-12-09 18:36:55,218 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 18:36:55,226 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 18:36:55,226 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-12-09 18:36:55,227 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-09 18:36:55,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-09 18:36:55,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-12-09 18:36:55,227 INFO L87 Difference]: Start difference. First operand 41 states and 47 transitions. Second operand 5 states. [2018-12-09 18:36:55,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 18:36:55,350 INFO L93 Difference]: Finished difference Result 57 states and 63 transitions. [2018-12-09 18:36:55,351 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-09 18:36:55,351 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 32 [2018-12-09 18:36:55,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 18:36:55,352 INFO L225 Difference]: With dead ends: 57 [2018-12-09 18:36:55,352 INFO L226 Difference]: Without dead ends: 41 [2018-12-09 18:36:55,352 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 [2018-12-09 18:36:55,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-12-09 18:36:55,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2018-12-09 18:36:55,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-12-09 18:36:55,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 46 transitions. [2018-12-09 18:36:55,355 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 46 transitions. Word has length 32 [2018-12-09 18:36:55,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 18:36:55,355 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 46 transitions. [2018-12-09 18:36:55,355 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-09 18:36:55,356 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 46 transitions. [2018-12-09 18:36:55,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-12-09 18:36:55,356 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 18:36:55,356 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] [2018-12-09 18:36:55,356 INFO L423 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 18:36:55,357 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 18:36:55,357 INFO L82 PathProgramCache]: Analyzing trace with hash 391372940, now seen corresponding path program 1 times [2018-12-09 18:36:55,357 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-09 18:36:55,357 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_53ec94ed-0290-4300-8636-2f9e16358c5a/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 [2018-12-09 18:36:55,360 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 18:36:55,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 18:36:55,413 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 18:36:55,479 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-12-09 18:36:55,479 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 18:36:55,486 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 18:36:55,486 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-12-09 18:36:55,487 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-12-09 18:36:55,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-12-09 18:36:55,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-12-09 18:36:55,487 INFO L87 Difference]: Start difference. First operand 41 states and 46 transitions. Second operand 8 states. [2018-12-09 18:36:55,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 18:36:55,830 INFO L93 Difference]: Finished difference Result 48 states and 53 transitions. [2018-12-09 18:36:55,830 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-12-09 18:36:55,830 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 32 [2018-12-09 18:36:55,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 18:36:55,831 INFO L225 Difference]: With dead ends: 48 [2018-12-09 18:36:55,831 INFO L226 Difference]: Without dead ends: 45 [2018-12-09 18:36:55,831 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 [2018-12-09 18:36:55,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2018-12-09 18:36:55,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2018-12-09 18:36:55,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2018-12-09 18:36:55,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 50 transitions. [2018-12-09 18:36:55,834 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 50 transitions. Word has length 32 [2018-12-09 18:36:55,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 18:36:55,835 INFO L480 AbstractCegarLoop]: Abstraction has 45 states and 50 transitions. [2018-12-09 18:36:55,835 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-12-09 18:36:55,835 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 50 transitions. [2018-12-09 18:36:55,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-12-09 18:36:55,835 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 18:36:55,836 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] [2018-12-09 18:36:55,836 INFO L423 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 18:36:55,836 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 18:36:55,836 INFO L82 PathProgramCache]: Analyzing trace with hash -477473555, now seen corresponding path program 1 times [2018-12-09 18:36:55,836 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-09 18:36:55,836 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_53ec94ed-0290-4300-8636-2f9e16358c5a/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 [2018-12-09 18:36:55,839 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 18:36:55,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 18:36:55,891 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 18:36:55,978 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-12-09 18:36:55,978 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 18:36:55,986 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 18:36:55,986 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-12-09 18:36:55,987 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-12-09 18:36:55,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-12-09 18:36:55,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-12-09 18:36:55,987 INFO L87 Difference]: Start difference. First operand 45 states and 50 transitions. Second operand 8 states. [2018-12-09 18:36:56,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 18:36:56,639 INFO L93 Difference]: Finished difference Result 62 states and 66 transitions. [2018-12-09 18:36:56,639 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-12-09 18:36:56,640 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 33 [2018-12-09 18:36:56,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 18:36:56,640 INFO L225 Difference]: With dead ends: 62 [2018-12-09 18:36:56,640 INFO L226 Difference]: Without dead ends: 37 [2018-12-09 18:36:56,641 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 [2018-12-09 18:36:56,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2018-12-09 18:36:56,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2018-12-09 18:36:56,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-12-09 18:36:56,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 38 transitions. [2018-12-09 18:36:56,643 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 38 transitions. Word has length 33 [2018-12-09 18:36:56,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 18:36:56,643 INFO L480 AbstractCegarLoop]: Abstraction has 37 states and 38 transitions. [2018-12-09 18:36:56,643 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-12-09 18:36:56,643 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 38 transitions. [2018-12-09 18:36:56,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-12-09 18:36:56,644 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 18:36:56,644 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] [2018-12-09 18:36:56,644 INFO L423 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 18:36:56,644 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 18:36:56,645 INFO L82 PathProgramCache]: Analyzing trace with hash -25386389, now seen corresponding path program 1 times [2018-12-09 18:36:56,645 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-09 18:36:56,645 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_53ec94ed-0290-4300-8636-2f9e16358c5a/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 [2018-12-09 18:36:56,648 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 18:36:56,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 18:36:56,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 18:36:56,886 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-12-09 18:36:56,910 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 06:36:56 BoogieIcfgContainer [2018-12-09 18:36:56,910 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-09 18:36:56,911 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-09 18:36:56,911 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-09 18:36:56,911 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-09 18:36:56,911 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 06:36:51" (3/4) ... [2018-12-09 18:36:56,913 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-12-09 18:36:56,957 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_53ec94ed-0290-4300-8636-2f9e16358c5a/bin-2019/utaipan/witness.graphml [2018-12-09 18:36:56,957 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-09 18:36:56,957 INFO L168 Benchmark]: Toolchain (without parser) took 6129.84 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 192.4 MB). Free memory was 942.0 MB in the beginning and 1.1 GB in the end (delta: -181.6 MB). Peak memory consumption was 10.8 MB. Max. memory is 11.5 GB. [2018-12-09 18:36:56,958 INFO L168 Benchmark]: CDTParser took 0.13 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. [2018-12-09 18:36:56,958 INFO L168 Benchmark]: CACSL2BoogieTranslator took 150.61 ms. Allocated memory is still 1.0 GB. Free memory was 942.0 MB in the beginning and 925.9 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. [2018-12-09 18:36:56,959 INFO L168 Benchmark]: Boogie Procedure Inliner took 15.17 ms. Allocated memory is still 1.0 GB. Free memory is still 925.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 18:36:56,959 INFO L168 Benchmark]: Boogie Preprocessor took 48.41 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 128.5 MB). Free memory was 925.9 MB in the beginning and 1.1 GB in the end (delta: -191.2 MB). Peak memory consumption was 14.0 MB. Max. memory is 11.5 GB. [2018-12-09 18:36:56,959 INFO L168 Benchmark]: RCFGBuilder took 226.63 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: 19.2 MB). Peak memory consumption was 19.2 MB. Max. memory is 11.5 GB. [2018-12-09 18:36:56,959 INFO L168 Benchmark]: TraceAbstraction took 5638.61 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 64.0 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -25.7 MB). Peak memory consumption was 38.3 MB. Max. memory is 11.5 GB. [2018-12-09 18:36:56,960 INFO L168 Benchmark]: Witness Printer took 46.04 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. [2018-12-09 18:36:56,962 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 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 150.61 ms. Allocated memory is still 1.0 GB. Free memory was 942.0 MB in the beginning and 925.9 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 15.17 ms. Allocated memory is still 1.0 GB. Free memory is still 925.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 48.41 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 128.5 MB). Free memory was 925.9 MB in the beginning and 1.1 GB in the end (delta: -191.2 MB). Peak memory consumption was 14.0 MB. Max. memory is 11.5 GB. * RCFGBuilder took 226.63 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: 19.2 MB). Peak memory consumption was 19.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 5638.61 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 64.0 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -25.7 MB). Peak memory consumption was 38.3 MB. Max. memory is 11.5 GB. * Witness Printer took 46.04 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 80]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L74] double x = -0.0; [L75] double y = 0.0; VAL [x=0.0, y=0.0] [L76] CALL, EXPR fmin_double(x, y) VAL [\old(x)=0.0, \old(y)=0.0] [L46] CALL, EXPR __fpclassify_double(x) VAL [\old(x)=0.0] [L19] __uint32_t msw, lsw; VAL [\old(x)=0.0, x=0.0] [L22] ieee_double_shape_type ew_u; [L23] ew_u.value = (x) [L24] EXPR ew_u.parts.msw [L24] (msw) = ew_u.parts.msw [L25] EXPR ew_u.parts.lsw [L25] (lsw) = ew_u.parts.lsw [L28-L29] COND TRUE (msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000) [L30] return 2; VAL [\old(x)=0.0, \result=2, lsw=0, msw=-2147483648, x=0.0] [L46] RET, EXPR __fpclassify_double(x) VAL [\old(x)=0.0, \old(y)=0.0, __fpclassify_double(x)=2, x=0.0, y=0.0] [L46] COND FALSE !(__fpclassify_double(x) == 0) [L48] CALL, EXPR __fpclassify_double(y) VAL [\old(x)=0.0] [L19] __uint32_t msw, lsw; VAL [\old(x)=0.0, x=0.0] [L22] ieee_double_shape_type ew_u; [L23] ew_u.value = (x) [L24] EXPR ew_u.parts.msw [L24] (msw) = ew_u.parts.msw [L25] EXPR ew_u.parts.lsw [L25] (lsw) = ew_u.parts.lsw [L28-L29] COND TRUE (msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000) [L30] return 2; VAL [\old(x)=0.0, \result=2, lsw=0, msw=0, x=0.0] [L48] RET, EXPR __fpclassify_double(y) VAL [\old(x)=0.0, \old(y)=0.0, __fpclassify_double(y)=2, x=0.0, y=0.0] [L48] COND FALSE !(__fpclassify_double(y) == 0) [L51] 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] [L51] return x < y ? x : y; [L76] RET, EXPR fmin_double(x, y) VAL [fmin_double(x, y)=0.0, x=0.0, y=0.0] [L76] double res = fmin_double(x, y); [L79] EXPR res == -0.0 && __signbit_double(res) == 1 VAL [res=0.0, res == -0.0 && __signbit_double(res) == 1=1, x=0.0, y=0.0] [L79] CALL, EXPR __signbit_double(res) VAL [\old(x)=0.0] [L55] __uint32_t msw; VAL [\old(x)=0.0, x=0.0] [L58] ieee_double_shape_type gh_u; [L59] gh_u.value = (x) [L60] EXPR gh_u.parts.msw [L60] (msw) = gh_u.parts.msw [L63] return (msw & 0x80000000) != 0; VAL [\old(x)=0.0, \result=0, msw=0, x=0.0] [L79] RET, EXPR __signbit_double(res) VAL [__signbit_double(res)=0, res=0.0, res == -0.0 && __signbit_double(res) == 1=1, x=0.0, y=0.0] [L79] EXPR res == -0.0 && __signbit_double(res) == 1 VAL [__signbit_double(res)=0, res=0.0, res == -0.0 && __signbit_double(res) == 1=0, x=0.0, y=0.0] [L79] COND TRUE !(res == -0.0 && __signbit_double(res) == 1) [L80] __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, 5.6s OverallTime, 12 OverallIterations, 2 TraceHistogramMax, 3.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 452 SDtfs, 177 SDslu, 1317 SDs, 0 SdLazy, 513 SolverSat, 11 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 315 GetRequests, 256 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1.4s 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, 34701 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...