./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_0930_true-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_faf80a9e-fa3d-41d2-8d2e-5257a7a8b7d6/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_faf80a9e-fa3d-41d2-8d2e-5257a7a8b7d6/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_faf80a9e-fa3d-41d2-8d2e-5257a7a8b7d6/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_faf80a9e-fa3d-41d2-8d2e-5257a7a8b7d6/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_0930_true-unreach-call.c -s /tmp/vcloud-vcloud-master/worker/working_dir_faf80a9e-fa3d-41d2-8d2e-5257a7a8b7d6/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_faf80a9e-fa3d-41d2-8d2e-5257a7a8b7d6/bin-2019/uautomizer --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8d1cc22c86ec678ca6c8e47fb3affd89f077aca1 .................................................................................................................................................................................................................................................................................................................... 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_faf80a9e-fa3d-41d2-8d2e-5257a7a8b7d6/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_faf80a9e-fa3d-41d2-8d2e-5257a7a8b7d6/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_faf80a9e-fa3d-41d2-8d2e-5257a7a8b7d6/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_faf80a9e-fa3d-41d2-8d2e-5257a7a8b7d6/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_0930_true-unreach-call.c -s /tmp/vcloud-vcloud-master/worker/working_dir_faf80a9e-fa3d-41d2-8d2e-5257a7a8b7d6/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_faf80a9e-fa3d-41d2-8d2e-5257a7a8b7d6/bin-2019/uautomizer --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8d1cc22c86ec678ca6c8e47fb3affd89f077aca1 ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: UnsupportedOperationException: translation of (bvneg (_ BitVec 32) (_ BitVec 32)) not yet implemented, please contact Matthias --- Real Ultimate output --- This is Ultimate 0.1.23-635dfa2 [2018-12-01 13:14:58,280 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-01 13:14:58,281 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-01 13:14:58,287 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-01 13:14:58,287 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-01 13:14:58,288 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-01 13:14:58,288 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-01 13:14:58,289 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-01 13:14:58,290 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-01 13:14:58,290 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-01 13:14:58,291 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-01 13:14:58,291 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-01 13:14:58,292 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-01 13:14:58,292 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-01 13:14:58,293 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-01 13:14:58,293 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-01 13:14:58,293 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-01 13:14:58,294 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-01 13:14:58,295 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-01 13:14:58,296 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-01 13:14:58,297 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-01 13:14:58,297 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-01 13:14:58,298 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-01 13:14:58,299 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-01 13:14:58,299 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-01 13:14:58,299 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-01 13:14:58,300 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-01 13:14:58,300 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-01 13:14:58,301 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-01 13:14:58,301 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-01 13:14:58,301 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-01 13:14:58,302 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-01 13:14:58,302 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-01 13:14:58,302 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-01 13:14:58,303 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-01 13:14:58,303 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-01 13:14:58,303 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_faf80a9e-fa3d-41d2-8d2e-5257a7a8b7d6/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-12-01 13:14:58,311 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-01 13:14:58,311 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-01 13:14:58,311 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-01 13:14:58,311 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-01 13:14:58,312 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-01 13:14:58,312 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-01 13:14:58,312 INFO L133 SettingsManager]: * Use SBE=true [2018-12-01 13:14:58,312 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-01 13:14:58,312 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-01 13:14:58,312 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-01 13:14:58,313 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-01 13:14:58,313 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-01 13:14:58,313 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-01 13:14:58,313 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-01 13:14:58,313 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-01 13:14:58,313 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-01 13:14:58,313 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-01 13:14:58,313 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-01 13:14:58,313 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-01 13:14:58,314 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-01 13:14:58,314 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-01 13:14:58,314 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-01 13:14:58,314 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-01 13:14:58,314 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-01 13:14:58,314 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-01 13:14:58,314 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-01 13:14:58,314 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-01 13:14:58,315 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-12-01 13:14:58,315 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-01 13:14:58,315 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-01 13:14:58,315 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_faf80a9e-fa3d-41d2-8d2e-5257a7a8b7d6/bin-2019/uautomizer 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 -> Automizer 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 -> 8d1cc22c86ec678ca6c8e47fb3affd89f077aca1 [2018-12-01 13:14:58,332 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-01 13:14:58,339 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-01 13:14:58,341 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-01 13:14:58,342 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-01 13:14:58,342 INFO L276 PluginConnector]: CDTParser initialized [2018-12-01 13:14:58,342 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_faf80a9e-fa3d-41d2-8d2e-5257a7a8b7d6/bin-2019/uautomizer/../../sv-benchmarks/c/float-newlib/float_req_bl_0930_true-unreach-call.c [2018-12-01 13:14:58,378 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_faf80a9e-fa3d-41d2-8d2e-5257a7a8b7d6/bin-2019/uautomizer/data/a56bfd846/21d01cfc0e7d4375961272b86d9321f2/FLAG269903214 [2018-12-01 13:14:58,762 INFO L307 CDTParser]: Found 1 translation units. [2018-12-01 13:14:58,762 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_faf80a9e-fa3d-41d2-8d2e-5257a7a8b7d6/sv-benchmarks/c/float-newlib/float_req_bl_0930_true-unreach-call.c [2018-12-01 13:14:58,766 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_faf80a9e-fa3d-41d2-8d2e-5257a7a8b7d6/bin-2019/uautomizer/data/a56bfd846/21d01cfc0e7d4375961272b86d9321f2/FLAG269903214 [2018-12-01 13:14:58,774 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_faf80a9e-fa3d-41d2-8d2e-5257a7a8b7d6/bin-2019/uautomizer/data/a56bfd846/21d01cfc0e7d4375961272b86d9321f2 [2018-12-01 13:14:58,776 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-01 13:14:58,777 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-01 13:14:58,777 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-01 13:14:58,777 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-01 13:14:58,779 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-01 13:14:58,779 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 01:14:58" (1/1) ... [2018-12-01 13:14:58,781 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58f41b83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 01:14:58, skipping insertion in model container [2018-12-01 13:14:58,781 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 01:14:58" (1/1) ... [2018-12-01 13:14:58,786 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-01 13:14:58,797 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-01 13:14:58,899 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-01 13:14:58,902 INFO L191 MainTranslator]: Completed pre-run [2018-12-01 13:14:58,923 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-01 13:14:58,964 INFO L195 MainTranslator]: Completed translation [2018-12-01 13:14:58,964 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 01:14:58 WrapperNode [2018-12-01 13:14:58,964 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-01 13:14:58,965 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-01 13:14:58,965 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-01 13:14:58,965 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-01 13:14:58,970 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 01:14:58" (1/1) ... [2018-12-01 13:14:58,977 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 01:14:58" (1/1) ... [2018-12-01 13:14:58,981 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-01 13:14:58,981 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-01 13:14:58,982 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-01 13:14:58,982 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-01 13:14:58,987 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 01:14:58" (1/1) ... [2018-12-01 13:14:58,988 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 01:14:58" (1/1) ... [2018-12-01 13:14:58,989 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 01:14:58" (1/1) ... [2018-12-01 13:14:58,989 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 01:14:58" (1/1) ... [2018-12-01 13:14:58,996 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 01:14:58" (1/1) ... [2018-12-01 13:14:58,999 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 01:14:58" (1/1) ... [2018-12-01 13:14:59,000 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 01:14:58" (1/1) ... [2018-12-01 13:14:59,002 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-01 13:14:59,002 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-01 13:14:59,002 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-01 13:14:59,002 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-01 13:14:59,002 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 01:14:58" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_faf80a9e-fa3d-41d2-8d2e-5257a7a8b7d6/bin-2019/uautomizer/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 [2018-12-01 13:14:59,031 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-01 13:14:59,032 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-01 13:14:59,032 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2018-12-01 13:14:59,032 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-12-01 13:14:59,032 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-01 13:14:59,032 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-01 13:14:59,032 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2018-12-01 13:14:59,032 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-01 13:14:59,032 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_logf [2018-12-01 13:14:59,032 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_logf [2018-12-01 13:14:59,032 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-01 13:14:59,033 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-01 13:14:59,033 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-12-01 13:14:59,033 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_float [2018-12-01 13:14:59,033 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_float [2018-12-01 13:14:59,033 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-01 13:14:59,200 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-01 13:14:59,201 INFO L280 CfgBuilder]: Removed 8 assue(true) statements. [2018-12-01 13:14:59,201 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 01:14:59 BoogieIcfgContainer [2018-12-01 13:14:59,201 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-01 13:14:59,201 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-01 13:14:59,201 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-01 13:14:59,203 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-01 13:14:59,203 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.12 01:14:58" (1/3) ... [2018-12-01 13:14:59,204 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4598604 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 01:14:59, skipping insertion in model container [2018-12-01 13:14:59,204 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 01:14:58" (2/3) ... [2018-12-01 13:14:59,204 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4598604 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 01:14:59, skipping insertion in model container [2018-12-01 13:14:59,204 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 01:14:59" (3/3) ... [2018-12-01 13:14:59,205 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_0930_true-unreach-call.c [2018-12-01 13:14:59,211 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-01 13:14:59,215 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-01 13:14:59,223 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-01 13:14:59,240 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-01 13:14:59,241 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-01 13:14:59,241 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-01 13:14:59,241 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-01 13:14:59,241 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-01 13:14:59,241 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-01 13:14:59,241 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-01 13:14:59,241 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-01 13:14:59,241 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-01 13:14:59,251 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states. [2018-12-01 13:14:59,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-12-01 13:14:59,254 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 13:14:59,255 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-01 13:14:59,256 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-01 13:14:59,259 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 13:14:59,259 INFO L82 PathProgramCache]: Analyzing trace with hash -1500863293, now seen corresponding path program 1 times [2018-12-01 13:14:59,260 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 13:14:59,261 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 13:14:59,288 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 13:14:59,288 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 13:14:59,288 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 13:14:59,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 13:14:59,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 13:14:59,345 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-01 13:14:59,345 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-01 13:14:59,347 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-12-01 13:14:59,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-12-01 13:14:59,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-01 13:14:59,356 INFO L87 Difference]: Start difference. First operand 47 states. Second operand 2 states. [2018-12-01 13:14:59,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 13:14:59,370 INFO L93 Difference]: Finished difference Result 86 states and 127 transitions. [2018-12-01 13:14:59,370 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-12-01 13:14:59,370 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 17 [2018-12-01 13:14:59,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 13:14:59,376 INFO L225 Difference]: With dead ends: 86 [2018-12-01 13:14:59,376 INFO L226 Difference]: Without dead ends: 43 [2018-12-01 13:14:59,378 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 [2018-12-01 13:14:59,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-12-01 13:14:59,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2018-12-01 13:14:59,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-12-01 13:14:59,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 54 transitions. [2018-12-01 13:14:59,400 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 54 transitions. Word has length 17 [2018-12-01 13:14:59,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 13:14:59,400 INFO L480 AbstractCegarLoop]: Abstraction has 43 states and 54 transitions. [2018-12-01 13:14:59,400 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-12-01 13:14:59,400 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 54 transitions. [2018-12-01 13:14:59,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-12-01 13:14:59,401 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 13:14:59,401 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-01 13:14:59,401 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-01 13:14:59,401 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 13:14:59,401 INFO L82 PathProgramCache]: Analyzing trace with hash -1557758696, now seen corresponding path program 1 times [2018-12-01 13:14:59,401 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 13:14:59,401 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 13:14:59,402 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 13:14:59,402 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 13:14:59,402 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 13:14:59,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 13:14:59,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 13:14:59,448 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-12-01 13:14:59,468 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.12 01:14:59 BoogieIcfgContainer [2018-12-01 13:14:59,469 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-01 13:14:59,469 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-01 13:14:59,469 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-01 13:14:59,469 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-01 13:14:59,469 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 01:14:59" (3/4) ... [2018-12-01 13:14:59,472 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-12-01 13:14:59,472 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-01 13:14:59,472 INFO L168 Benchmark]: Toolchain (without parser) took 696.26 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 142.1 MB). Free memory was 962.4 MB in the beginning and 1.1 GB in the end (delta: -108.7 MB). Peak memory consumption was 33.4 MB. Max. memory is 11.5 GB. [2018-12-01 13:14:59,473 INFO L168 Benchmark]: CDTParser took 0.10 ms. Allocated memory is still 1.0 GB. Free memory is still 982.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-01 13:14:59,473 INFO L168 Benchmark]: CACSL2BoogieTranslator took 187.50 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 142.1 MB). Free memory was 962.4 MB in the beginning and 1.1 GB in the end (delta: -174.6 MB). Peak memory consumption was 30.4 MB. Max. memory is 11.5 GB. [2018-12-01 13:14:59,474 INFO L168 Benchmark]: Boogie Procedure Inliner took 16.50 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: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 11.5 GB. [2018-12-01 13:14:59,474 INFO L168 Benchmark]: Boogie Preprocessor took 20.26 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. [2018-12-01 13:14:59,475 INFO L168 Benchmark]: RCFGBuilder took 199.11 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: 25.0 MB). Peak memory consumption was 25.0 MB. Max. memory is 11.5 GB. [2018-12-01 13:14:59,475 INFO L168 Benchmark]: TraceAbstraction took 267.24 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: 37.5 MB). Peak memory consumption was 37.5 MB. Max. memory is 11.5 GB. [2018-12-01 13:14:59,475 INFO L168 Benchmark]: Witness Printer took 2.94 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. [2018-12-01 13:14:59,477 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10 ms. Allocated memory is still 1.0 GB. Free memory is still 982.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 187.50 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 142.1 MB). Free memory was 962.4 MB in the beginning and 1.1 GB in the end (delta: -174.6 MB). Peak memory consumption was 30.4 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 16.50 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: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 20.26 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 199.11 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: 25.0 MB). Peak memory consumption was 25.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 267.24 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: 37.5 MB). Peak memory consumption was 37.5 MB. Max. memory is 11.5 GB. * Witness Printer took 2.94 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: - UnprovableResult [Line: 121]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 120, overapproximation of someBinaryArithmeticFLOAToperation at line 32, overapproximation of bitwiseAnd at line 31. Possible FailurePath: [L12-L16] static const float ln2_hi_log = 6.9313812256e-01, ln2_lo_log = 9.0580006145e-06, two25_log = 3.355443200e+07, Lg1_log = 6.6666668653e-01, Lg2_log = 4.0000000596e-01, Lg3_log = 2.8571429849e-01, Lg4_log = 2.2222198546e-01, Lg5_log = 1.8183572590e-01, Lg6_log = 1.5313838422e-01, Lg7_log = 1.4798198640e-01; [L18] static const float zero_log = 0.0; VAL [\old(Lg1_log)=20, \old(Lg2_log)=21, \old(Lg3_log)=5, \old(Lg4_log)=8, \old(Lg5_log)=10, \old(Lg6_log)=16, \old(Lg7_log)=15, \old(ln2_hi_log)=7, \old(ln2_lo_log)=11, \old(two25_log)=14, \old(zero_log)=13, Lg1_log=66666668653/100000000000, Lg2_log=10000000149/25000000000, Lg3_log=28571429849/100000000000, Lg4_log=11111099273/50000000000, Lg5_log=1818357259/10000000000, Lg6_log=7656919211/50000000000, Lg7_log=184977483/1250000000, ln2_hi_log=2166056633/3125000000, ln2_lo_log=18116001229/2000000000000000, two25_log=33554432, zero_log=0] [L116] float x = 1.0f; VAL [Lg1_log=66666668653/100000000000, Lg2_log=10000000149/25000000000, Lg3_log=28571429849/100000000000, Lg4_log=11111099273/50000000000, Lg5_log=1818357259/10000000000, Lg6_log=7656919211/50000000000, Lg7_log=184977483/1250000000, ln2_hi_log=2166056633/3125000000, ln2_lo_log=18116001229/2000000000000000, two25_log=33554432, x=1, zero_log=0] [L117] CALL, EXPR __ieee754_logf(x) VAL [\old(x)=1, Lg1_log=66666668653/100000000000, Lg2_log=10000000149/25000000000, Lg3_log=28571429849/100000000000, Lg4_log=11111099273/50000000000, Lg5_log=1818357259/10000000000, Lg6_log=7656919211/50000000000, Lg7_log=184977483/1250000000, ln2_hi_log=2166056633/3125000000, ln2_lo_log=18116001229/2000000000000000, two25_log=33554432, zero_log=0] [L21] float hfsq, f, s, z, R, w, t1, t2, dk; [L22] __int32_t k, ix, i, j; VAL [\old(x)=1, Lg1_log=66666668653/100000000000, Lg2_log=10000000149/25000000000, Lg3_log=28571429849/100000000000, Lg4_log=11111099273/50000000000, Lg5_log=1818357259/10000000000, Lg6_log=7656919211/50000000000, Lg7_log=184977483/1250000000, ln2_hi_log=2166056633/3125000000, ln2_lo_log=18116001229/2000000000000000, two25_log=33554432, x=1, zero_log=0] [L25] ieee_float_shape_type gf_u; [L26] gf_u.value = (x) [L27] EXPR gf_u.word [L27] (ix) = gf_u.word [L30] k = 0 VAL [\old(x)=1, ix=2, k=0, Lg1_log=66666668653/100000000000, Lg2_log=10000000149/25000000000, Lg3_log=28571429849/100000000000, Lg4_log=11111099273/50000000000, Lg5_log=1818357259/10000000000, Lg6_log=7656919211/50000000000, Lg7_log=184977483/1250000000, ln2_hi_log=2166056633/3125000000, ln2_lo_log=18116001229/2000000000000000, two25_log=33554432, x=1, zero_log=0] [L31] COND TRUE ((ix & 0x7fffffff) == 0) [L32] return -two25_log / zero_log; VAL [\old(x)=1, ix=2, k=0, Lg1_log=66666668653/100000000000, Lg2_log=10000000149/25000000000, Lg3_log=28571429849/100000000000, Lg4_log=11111099273/50000000000, Lg5_log=1818357259/10000000000, Lg6_log=7656919211/50000000000, Lg7_log=184977483/1250000000, ln2_hi_log=2166056633/3125000000, ln2_lo_log=18116001229/2000000000000000, two25_log=33554432, x=1, zero_log=0] [L117] RET, EXPR __ieee754_logf(x) VAL [__ieee754_logf(x)=9, Lg1_log=66666668653/100000000000, Lg2_log=10000000149/25000000000, Lg3_log=28571429849/100000000000, Lg4_log=11111099273/50000000000, Lg5_log=1818357259/10000000000, Lg6_log=7656919211/50000000000, Lg7_log=184977483/1250000000, ln2_hi_log=2166056633/3125000000, ln2_lo_log=18116001229/2000000000000000, two25_log=33554432, x=1, zero_log=0] [L117] float res = __ieee754_logf(x); [L120] EXPR res == 0.0f && __signbit_float(res) == 0 VAL [Lg1_log=66666668653/100000000000, Lg2_log=10000000149/25000000000, Lg3_log=28571429849/100000000000, Lg4_log=11111099273/50000000000, Lg5_log=1818357259/10000000000, Lg6_log=7656919211/50000000000, Lg7_log=184977483/1250000000, ln2_hi_log=2166056633/3125000000, ln2_lo_log=18116001229/2000000000000000, res=9, res == 0.0f && __signbit_float(res) == 0=0, two25_log=33554432, x=1, zero_log=0] [L120] COND TRUE !(res == 0.0f && __signbit_float(res) == 0) [L121] __VERIFIER_error() VAL [Lg1_log=66666668653/100000000000, Lg2_log=10000000149/25000000000, Lg3_log=28571429849/100000000000, Lg4_log=11111099273/50000000000, Lg5_log=1818357259/10000000000, Lg6_log=7656919211/50000000000, Lg7_log=184977483/1250000000, ln2_hi_log=2166056633/3125000000, ln2_lo_log=18116001229/2000000000000000, res=9, two25_log=33554432, x=1, zero_log=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 47 locations, 1 error locations. UNSAFE Result, 0.2s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 58 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=47occurred 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, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 35 NumberOfCodeBlocks, 35 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 16 ConstructedInterpolants, 0 QuantifiedInterpolants, 256 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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 [2018-12-01 13:15:00,735 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-01 13:15:00,736 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-01 13:15:00,743 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-01 13:15:00,743 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-01 13:15:00,744 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-01 13:15:00,744 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-01 13:15:00,745 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-01 13:15:00,746 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-01 13:15:00,747 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-01 13:15:00,747 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-01 13:15:00,748 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-01 13:15:00,748 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-01 13:15:00,749 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-01 13:15:00,749 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-01 13:15:00,750 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-01 13:15:00,751 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-01 13:15:00,752 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-01 13:15:00,753 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-01 13:15:00,754 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-01 13:15:00,755 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-01 13:15:00,756 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-01 13:15:00,757 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-01 13:15:00,757 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-01 13:15:00,758 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-01 13:15:00,758 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-01 13:15:00,759 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-01 13:15:00,760 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-01 13:15:00,760 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-01 13:15:00,761 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-01 13:15:00,761 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-01 13:15:00,761 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-01 13:15:00,762 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-01 13:15:00,762 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-01 13:15:00,762 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-01 13:15:00,763 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-01 13:15:00,763 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_faf80a9e-fa3d-41d2-8d2e-5257a7a8b7d6/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2018-12-01 13:15:00,773 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-01 13:15:00,773 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-01 13:15:00,774 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-01 13:15:00,774 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-01 13:15:00,774 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-01 13:15:00,774 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-01 13:15:00,774 INFO L133 SettingsManager]: * Use SBE=true [2018-12-01 13:15:00,775 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-01 13:15:00,775 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-01 13:15:00,775 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-01 13:15:00,775 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-01 13:15:00,775 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-01 13:15:00,775 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-01 13:15:00,775 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-01 13:15:00,775 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-12-01 13:15:00,775 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-12-01 13:15:00,775 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-01 13:15:00,776 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-01 13:15:00,776 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-01 13:15:00,776 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-01 13:15:00,776 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-01 13:15:00,776 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-01 13:15:00,776 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-01 13:15:00,776 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-01 13:15:00,776 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-01 13:15:00,777 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-01 13:15:00,777 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-01 13:15:00,777 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-01 13:15:00,777 INFO L133 SettingsManager]: * Trace refinement strategy=WOLF [2018-12-01 13:15:00,777 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-01 13:15:00,777 INFO L133 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2018-12-01 13:15:00,777 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-12-01 13:15:00,777 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_faf80a9e-fa3d-41d2-8d2e-5257a7a8b7d6/bin-2019/uautomizer 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 -> Automizer 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 -> 8d1cc22c86ec678ca6c8e47fb3affd89f077aca1 [2018-12-01 13:15:00,801 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-01 13:15:00,810 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-01 13:15:00,813 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-01 13:15:00,814 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-01 13:15:00,814 INFO L276 PluginConnector]: CDTParser initialized [2018-12-01 13:15:00,815 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_faf80a9e-fa3d-41d2-8d2e-5257a7a8b7d6/bin-2019/uautomizer/../../sv-benchmarks/c/float-newlib/float_req_bl_0930_true-unreach-call.c [2018-12-01 13:15:00,854 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_faf80a9e-fa3d-41d2-8d2e-5257a7a8b7d6/bin-2019/uautomizer/data/0101960fa/f4459caae3a846949f0dad558f8b15b2/FLAG96c81b30f [2018-12-01 13:15:01,273 INFO L307 CDTParser]: Found 1 translation units. [2018-12-01 13:15:01,274 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_faf80a9e-fa3d-41d2-8d2e-5257a7a8b7d6/sv-benchmarks/c/float-newlib/float_req_bl_0930_true-unreach-call.c [2018-12-01 13:15:01,278 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_faf80a9e-fa3d-41d2-8d2e-5257a7a8b7d6/bin-2019/uautomizer/data/0101960fa/f4459caae3a846949f0dad558f8b15b2/FLAG96c81b30f [2018-12-01 13:15:01,287 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_faf80a9e-fa3d-41d2-8d2e-5257a7a8b7d6/bin-2019/uautomizer/data/0101960fa/f4459caae3a846949f0dad558f8b15b2 [2018-12-01 13:15:01,289 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-01 13:15:01,290 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-01 13:15:01,290 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-01 13:15:01,291 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-01 13:15:01,293 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-01 13:15:01,293 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 01:15:01" (1/1) ... [2018-12-01 13:15:01,294 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e5eb1c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 01:15:01, skipping insertion in model container [2018-12-01 13:15:01,295 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 01:15:01" (1/1) ... [2018-12-01 13:15:01,299 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-01 13:15:01,312 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-01 13:15:01,437 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-01 13:15:01,442 INFO L191 MainTranslator]: Completed pre-run [2018-12-01 13:15:01,476 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-01 13:15:01,496 INFO L195 MainTranslator]: Completed translation [2018-12-01 13:15:01,496 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 01:15:01 WrapperNode [2018-12-01 13:15:01,496 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-01 13:15:01,497 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-01 13:15:01,497 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-01 13:15:01,497 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-01 13:15:01,502 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 01:15:01" (1/1) ... [2018-12-01 13:15:01,511 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 01:15:01" (1/1) ... [2018-12-01 13:15:01,517 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-01 13:15:01,517 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-01 13:15:01,517 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-01 13:15:01,517 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-01 13:15:01,553 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 01:15:01" (1/1) ... [2018-12-01 13:15:01,553 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 01:15:01" (1/1) ... [2018-12-01 13:15:01,556 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 01:15:01" (1/1) ... [2018-12-01 13:15:01,556 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 01:15:01" (1/1) ... [2018-12-01 13:15:01,564 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 01:15:01" (1/1) ... [2018-12-01 13:15:01,568 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 01:15:01" (1/1) ... [2018-12-01 13:15:01,569 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 01:15:01" (1/1) ... [2018-12-01 13:15:01,571 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-01 13:15:01,571 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-01 13:15:01,571 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-01 13:15:01,571 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-01 13:15:01,572 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 01:15:01" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_faf80a9e-fa3d-41d2-8d2e-5257a7a8b7d6/bin-2019/uautomizer/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 [2018-12-01 13:15:01,601 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-01 13:15:01,601 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-01 13:15:01,601 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2018-12-01 13:15:01,601 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-01 13:15:01,601 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-01 13:15:01,601 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-01 13:15:01,601 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2018-12-01 13:15:01,601 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_logf [2018-12-01 13:15:01,601 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_logf [2018-12-01 13:15:01,601 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-01 13:15:01,602 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-01 13:15:01,602 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2018-12-01 13:15:01,602 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_float [2018-12-01 13:15:01,602 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_float [2018-12-01 13:15:01,602 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2018-12-01 13:15:01,602 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-01 13:15:02,477 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-01 13:15:13,122 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-01 13:15:13,219 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-01 13:15:13,225 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-01 13:15:13,225 INFO L280 CfgBuilder]: Removed 8 assue(true) statements. [2018-12-01 13:15:13,226 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 01:15:13 BoogieIcfgContainer [2018-12-01 13:15:13,226 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-01 13:15:13,226 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-01 13:15:13,226 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-01 13:15:13,228 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-01 13:15:13,228 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.12 01:15:01" (1/3) ... [2018-12-01 13:15:13,229 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@558139e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 01:15:13, skipping insertion in model container [2018-12-01 13:15:13,229 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 01:15:01" (2/3) ... [2018-12-01 13:15:13,229 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@558139e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 01:15:13, skipping insertion in model container [2018-12-01 13:15:13,229 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 01:15:13" (3/3) ... [2018-12-01 13:15:13,230 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_0930_true-unreach-call.c [2018-12-01 13:15:13,235 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-01 13:15:13,239 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-01 13:15:13,248 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-01 13:15:13,264 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-01 13:15:13,264 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-01 13:15:13,265 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-01 13:15:13,265 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-01 13:15:13,265 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-01 13:15:13,265 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-01 13:15:13,265 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-01 13:15:13,265 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-01 13:15:13,265 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-01 13:15:13,275 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states. [2018-12-01 13:15:13,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-12-01 13:15:13,278 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 13:15:13,278 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-01 13:15:13,280 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-01 13:15:13,283 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 13:15:13,283 INFO L82 PathProgramCache]: Analyzing trace with hash -1500863293, now seen corresponding path program 1 times [2018-12-01 13:15:13,285 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-01 13:15:13,285 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_faf80a9e-fa3d-41d2-8d2e-5257a7a8b7d6/bin-2019/uautomizer/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 [2018-12-01 13:15:13,290 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 13:15:13,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 13:15:13,479 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 13:15:13,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 13:15:13,490 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-01 13:15:13,500 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-01 13:15:13,501 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-01 13:15:13,503 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-12-01 13:15:13,510 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-12-01 13:15:13,510 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-01 13:15:13,512 INFO L87 Difference]: Start difference. First operand 47 states. Second operand 2 states. [2018-12-01 13:15:13,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 13:15:13,527 INFO L93 Difference]: Finished difference Result 86 states and 127 transitions. [2018-12-01 13:15:13,527 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-12-01 13:15:13,528 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 17 [2018-12-01 13:15:13,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 13:15:13,534 INFO L225 Difference]: With dead ends: 86 [2018-12-01 13:15:13,534 INFO L226 Difference]: Without dead ends: 43 [2018-12-01 13:15:13,537 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-01 13:15:13,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-12-01 13:15:13,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2018-12-01 13:15:13,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-12-01 13:15:13,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 54 transitions. [2018-12-01 13:15:13,562 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 54 transitions. Word has length 17 [2018-12-01 13:15:13,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 13:15:13,562 INFO L480 AbstractCegarLoop]: Abstraction has 43 states and 54 transitions. [2018-12-01 13:15:13,562 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-12-01 13:15:13,562 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 54 transitions. [2018-12-01 13:15:13,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-12-01 13:15:13,563 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 13:15:13,563 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-01 13:15:13,563 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-01 13:15:13,563 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 13:15:13,564 INFO L82 PathProgramCache]: Analyzing trace with hash -1557758696, now seen corresponding path program 1 times [2018-12-01 13:15:13,564 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-01 13:15:13,564 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_faf80a9e-fa3d-41d2-8d2e-5257a7a8b7d6/bin-2019/uautomizer/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 [2018-12-01 13:15:13,568 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 13:15:13,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 13:15:13,757 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 13:15:13,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 13:15:13,818 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-01 13:15:13,828 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-01 13:15:13,828 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-12-01 13:15:13,829 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-12-01 13:15:13,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-12-01 13:15:13,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-12-01 13:15:13,830 INFO L87 Difference]: Start difference. First operand 43 states and 54 transitions. Second operand 6 states. [2018-12-01 13:15:17,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 13:15:17,125 INFO L93 Difference]: Finished difference Result 62 states and 73 transitions. [2018-12-01 13:15:17,126 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-12-01 13:15:17,126 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2018-12-01 13:15:17,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 13:15:17,129 INFO L225 Difference]: With dead ends: 62 [2018-12-01 13:15:17,129 INFO L226 Difference]: Without dead ends: 47 [2018-12-01 13:15:17,130 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-12-01 13:15:17,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2018-12-01 13:15:17,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 43. [2018-12-01 13:15:17,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-12-01 13:15:17,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 53 transitions. [2018-12-01 13:15:17,137 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 53 transitions. Word has length 18 [2018-12-01 13:15:17,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 13:15:17,138 INFO L480 AbstractCegarLoop]: Abstraction has 43 states and 53 transitions. [2018-12-01 13:15:17,138 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-12-01 13:15:17,138 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 53 transitions. [2018-12-01 13:15:17,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-12-01 13:15:17,139 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 13:15:17,139 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-01 13:15:17,139 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-01 13:15:17,139 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 13:15:17,139 INFO L82 PathProgramCache]: Analyzing trace with hash 1081840321, now seen corresponding path program 1 times [2018-12-01 13:15:17,140 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-01 13:15:17,140 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_faf80a9e-fa3d-41d2-8d2e-5257a7a8b7d6/bin-2019/uautomizer/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 [2018-12-01 13:15:17,144 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 13:15:17,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 13:15:17,338 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 13:15:17,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 13:15:17,375 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-01 13:15:17,384 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-01 13:15:17,384 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-12-01 13:15:17,384 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-12-01 13:15:17,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-12-01 13:15:17,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-12-01 13:15:17,385 INFO L87 Difference]: Start difference. First operand 43 states and 53 transitions. Second operand 6 states. [2018-12-01 13:15:20,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 13:15:20,234 INFO L93 Difference]: Finished difference Result 62 states and 72 transitions. [2018-12-01 13:15:20,235 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-12-01 13:15:20,235 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2018-12-01 13:15:20,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 13:15:20,236 INFO L225 Difference]: With dead ends: 62 [2018-12-01 13:15:20,236 INFO L226 Difference]: Without dead ends: 47 [2018-12-01 13:15:20,236 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-12-01 13:15:20,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2018-12-01 13:15:20,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 43. [2018-12-01 13:15:20,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-12-01 13:15:20,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 52 transitions. [2018-12-01 13:15:20,241 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 52 transitions. Word has length 19 [2018-12-01 13:15:20,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 13:15:20,241 INFO L480 AbstractCegarLoop]: Abstraction has 43 states and 52 transitions. [2018-12-01 13:15:20,241 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-12-01 13:15:20,241 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 52 transitions. [2018-12-01 13:15:20,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-12-01 13:15:20,242 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 13:15:20,242 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] [2018-12-01 13:15:20,242 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-01 13:15:20,243 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 13:15:20,243 INFO L82 PathProgramCache]: Analyzing trace with hash 560078652, now seen corresponding path program 1 times [2018-12-01 13:15:20,243 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-01 13:15:20,243 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_faf80a9e-fa3d-41d2-8d2e-5257a7a8b7d6/bin-2019/uautomizer/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 [2018-12-01 13:15:20,247 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 13:15:20,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 13:15:20,299 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 13:15:20,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 13:15:20,335 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-01 13:15:20,343 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-01 13:15:20,343 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-12-01 13:15:20,343 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-12-01 13:15:20,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-12-01 13:15:20,344 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-12-01 13:15:20,344 INFO L87 Difference]: Start difference. First operand 43 states and 52 transitions. Second operand 6 states. [2018-12-01 13:15:23,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 13:15:23,040 INFO L93 Difference]: Finished difference Result 60 states and 69 transitions. [2018-12-01 13:15:23,040 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-12-01 13:15:23,041 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 20 [2018-12-01 13:15:23,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 13:15:23,041 INFO L225 Difference]: With dead ends: 60 [2018-12-01 13:15:23,041 INFO L226 Difference]: Without dead ends: 45 [2018-12-01 13:15:23,042 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-12-01 13:15:23,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2018-12-01 13:15:23,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 43. [2018-12-01 13:15:23,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-12-01 13:15:23,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 51 transitions. [2018-12-01 13:15:23,046 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 51 transitions. Word has length 20 [2018-12-01 13:15:23,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 13:15:23,046 INFO L480 AbstractCegarLoop]: Abstraction has 43 states and 51 transitions. [2018-12-01 13:15:23,046 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-12-01 13:15:23,046 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 51 transitions. [2018-12-01 13:15:23,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-12-01 13:15:23,047 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 13:15:23,047 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, 1, 1] [2018-12-01 13:15:23,047 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-01 13:15:23,047 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 13:15:23,047 INFO L82 PathProgramCache]: Analyzing trace with hash 2087902934, now seen corresponding path program 1 times [2018-12-01 13:15:23,048 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-01 13:15:23,048 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_faf80a9e-fa3d-41d2-8d2e-5257a7a8b7d6/bin-2019/uautomizer/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 [2018-12-01 13:15:23,052 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 13:15:23,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 13:15:23,900 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 13:15:23,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 13:15:23,991 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-01 13:15:24,008 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-01 13:15:24,008 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-12-01 13:15:24,008 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-12-01 13:15:24,008 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-12-01 13:15:24,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-12-01 13:15:24,009 INFO L87 Difference]: Start difference. First operand 43 states and 51 transitions. Second operand 7 states. [2018-12-01 13:15:26,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 13:15:26,898 INFO L93 Difference]: Finished difference Result 71 states and 86 transitions. [2018-12-01 13:15:26,899 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-12-01 13:15:26,900 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 28 [2018-12-01 13:15:26,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 13:15:26,901 INFO L225 Difference]: With dead ends: 71 [2018-12-01 13:15:26,901 INFO L226 Difference]: Without dead ends: 53 [2018-12-01 13:15:26,901 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2018-12-01 13:15:26,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2018-12-01 13:15:26,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 48. [2018-12-01 13:15:26,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2018-12-01 13:15:26,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 56 transitions. [2018-12-01 13:15:26,906 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 56 transitions. Word has length 28 [2018-12-01 13:15:26,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 13:15:26,906 INFO L480 AbstractCegarLoop]: Abstraction has 48 states and 56 transitions. [2018-12-01 13:15:26,907 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-12-01 13:15:26,907 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 56 transitions. [2018-12-01 13:15:26,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-12-01 13:15:26,907 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 13:15:26,907 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, 1, 1] [2018-12-01 13:15:26,907 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-01 13:15:26,907 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 13:15:26,907 INFO L82 PathProgramCache]: Analyzing trace with hash -286004855, now seen corresponding path program 1 times [2018-12-01 13:15:26,908 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-01 13:15:26,908 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_faf80a9e-fa3d-41d2-8d2e-5257a7a8b7d6/bin-2019/uautomizer/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 [2018-12-01 13:15:26,911 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 13:15:26,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 13:15:26,977 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 13:15:27,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 13:15:27,015 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-01 13:15:27,022 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-01 13:15:27,023 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-12-01 13:15:27,023 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-12-01 13:15:27,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-12-01 13:15:27,023 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-12-01 13:15:27,023 INFO L87 Difference]: Start difference. First operand 48 states and 56 transitions. Second operand 6 states. [2018-12-01 13:15:38,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 13:15:38,351 INFO L93 Difference]: Finished difference Result 57 states and 65 transitions. [2018-12-01 13:15:38,352 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-12-01 13:15:38,352 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 28 [2018-12-01 13:15:38,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 13:15:38,353 INFO L225 Difference]: With dead ends: 57 [2018-12-01 13:15:38,353 INFO L226 Difference]: Without dead ends: 54 [2018-12-01 13:15:38,353 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2018-12-01 13:15:38,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2018-12-01 13:15:38,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 52. [2018-12-01 13:15:38,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2018-12-01 13:15:38,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 60 transitions. [2018-12-01 13:15:38,357 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 60 transitions. Word has length 28 [2018-12-01 13:15:38,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 13:15:38,357 INFO L480 AbstractCegarLoop]: Abstraction has 52 states and 60 transitions. [2018-12-01 13:15:38,357 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-12-01 13:15:38,357 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 60 transitions. [2018-12-01 13:15:38,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-12-01 13:15:38,357 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 13:15:38,357 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, 1, 1] [2018-12-01 13:15:38,358 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-01 13:15:38,358 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 13:15:38,358 INFO L82 PathProgramCache]: Analyzing trace with hash 601498826, now seen corresponding path program 1 times [2018-12-01 13:15:38,358 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-01 13:15:38,358 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_faf80a9e-fa3d-41d2-8d2e-5257a7a8b7d6/bin-2019/uautomizer/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 [2018-12-01 13:15:38,361 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 13:15:38,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 13:15:38,547 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 13:15:38,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 13:15:38,745 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-01 13:15:38,754 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-01 13:15:38,754 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-12-01 13:15:38,754 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-12-01 13:15:38,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-12-01 13:15:38,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2018-12-01 13:15:38,755 INFO L87 Difference]: Start difference. First operand 52 states and 60 transitions. Second operand 9 states. [2018-12-01 13:16:09,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 13:16:09,182 INFO L93 Difference]: Finished difference Result 76 states and 87 transitions. [2018-12-01 13:16:09,216 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-12-01 13:16:09,216 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 28 [2018-12-01 13:16:09,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 13:16:09,216 INFO L225 Difference]: With dead ends: 76 [2018-12-01 13:16:09,216 INFO L226 Difference]: Without dead ends: 42 [2018-12-01 13:16:09,217 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2018-12-01 13:16:09,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2018-12-01 13:16:09,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2018-12-01 13:16:09,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2018-12-01 13:16:09,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 43 transitions. [2018-12-01 13:16:09,220 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 43 transitions. Word has length 28 [2018-12-01 13:16:09,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 13:16:09,221 INFO L480 AbstractCegarLoop]: Abstraction has 42 states and 43 transitions. [2018-12-01 13:16:09,221 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-12-01 13:16:09,221 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 43 transitions. [2018-12-01 13:16:09,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-12-01 13:16:09,221 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 13:16:09,221 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, 1, 1] [2018-12-01 13:16:09,221 INFO L423 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-01 13:16:09,221 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 13:16:09,221 INFO L82 PathProgramCache]: Analyzing trace with hash -19336663, now seen corresponding path program 1 times [2018-12-01 13:16:09,222 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-01 13:16:09,222 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_faf80a9e-fa3d-41d2-8d2e-5257a7a8b7d6/bin-2019/uautomizer/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 [2018-12-01 13:16:09,226 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 13:16:09,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 13:16:09,450 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 13:16:13,183 WARN L180 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 34 [2018-12-01 13:16:27,969 WARN L180 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 34 [2018-12-01 13:16:27,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 13:16:27,989 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-01 13:16:28,003 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-01 13:16:28,004 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2018-12-01 13:16:28,004 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-12-01 13:16:28,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-12-01 13:16:28,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=59, Unknown=7, NotChecked=0, Total=90 [2018-12-01 13:16:28,004 INFO L87 Difference]: Start difference. First operand 42 states and 43 transitions. Second operand 10 states. [2018-12-01 13:17:32,030 WARN L180 SmtUtils]: Spent 822.00 ms on a formula simplification that was a NOOP. DAG size: 46 [2018-12-01 13:17:58,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 13:17:58,404 INFO L93 Difference]: Finished difference Result 53 states and 53 transitions. [2018-12-01 13:17:58,654 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-12-01 13:17:58,654 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 28 [2018-12-01 13:17:58,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 13:17:58,654 INFO L225 Difference]: With dead ends: 53 [2018-12-01 13:17:58,655 INFO L226 Difference]: Without dead ends: 37 [2018-12-01 13:17:58,655 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 34.6s TimeCoverageRelationStatistics Valid=46, Invalid=125, Unknown=11, NotChecked=0, Total=182 [2018-12-01 13:17:58,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2018-12-01 13:17:58,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2018-12-01 13:17:58,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-12-01 13:17:58,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 36 transitions. [2018-12-01 13:17:58,659 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 36 transitions. Word has length 28 [2018-12-01 13:17:58,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 13:17:58,659 INFO L480 AbstractCegarLoop]: Abstraction has 37 states and 36 transitions. [2018-12-01 13:17:58,659 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-12-01 13:17:58,659 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 36 transitions. [2018-12-01 13:17:58,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-12-01 13:17:58,659 INFO L394 BasicCegarLoop]: Found error trace [2018-12-01 13:17:58,660 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-01 13:17:58,660 INFO L423 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-01 13:17:58,660 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 13:17:58,660 INFO L82 PathProgramCache]: Analyzing trace with hash 938017428, now seen corresponding path program 1 times [2018-12-01 13:17:58,660 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-01 13:17:58,660 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_faf80a9e-fa3d-41d2-8d2e-5257a7a8b7d6/bin-2019/uautomizer/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 [2018-12-01 13:17:58,664 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 13:17:58,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 13:17:58,739 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 13:17:58,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 13:17:58,864 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-01 13:17:58,872 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-01 13:17:58,872 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2018-12-01 13:17:58,872 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-12-01 13:17:58,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-12-01 13:17:58,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2018-12-01 13:17:58,872 INFO L87 Difference]: Start difference. First operand 37 states and 36 transitions. Second operand 11 states. [2018-12-01 13:17:59,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 13:17:59,221 INFO L93 Difference]: Finished difference Result 37 states and 36 transitions. [2018-12-01 13:17:59,221 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-12-01 13:17:59,222 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 36 [2018-12-01 13:17:59,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-01 13:17:59,222 INFO L225 Difference]: With dead ends: 37 [2018-12-01 13:17:59,222 INFO L226 Difference]: Without dead ends: 0 [2018-12-01 13:17:59,222 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=54, Invalid=218, Unknown=0, NotChecked=0, Total=272 [2018-12-01 13:17:59,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-12-01 13:17:59,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-12-01 13:17:59,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-12-01 13:17:59,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-12-01 13:17:59,223 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 36 [2018-12-01 13:17:59,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-01 13:17:59,223 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-01 13:17:59,223 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-12-01 13:17:59,223 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-12-01 13:17:59,223 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-12-01 13:17:59,225 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-12-01 13:17:59,455 WARN L180 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 52 [2018-12-01 13:17:59,534 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2018-12-01 13:17:59,534 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2018-12-01 13:17:59,534 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-12-01 13:17:59,534 INFO L448 ceAbstractionStarter]: For program point L31(lines 31 32) no Hoare annotation was computed. [2018-12-01 13:17:59,534 INFO L448 ceAbstractionStarter]: For program point L56(lines 56 72) no Hoare annotation was computed. [2018-12-01 13:17:59,534 INFO L448 ceAbstractionStarter]: For program point L85(lines 85 89) no Hoare annotation was computed. [2018-12-01 13:17:59,534 INFO L448 ceAbstractionStarter]: For program point L40-1(lines 40 44) no Hoare annotation was computed. [2018-12-01 13:17:59,535 INFO L444 ceAbstractionStarter]: At program point L40-2(lines 40 44) the Hoare annotation is: (or (not (= ((_ to_fp 8 24) roundNearestTiesToEven (_ +zero 11 53)) ~zero_log~0)) (and (exists ((v___ieee754_logf_~ix~0_18 (_ BitVec 32))) (and (= (fp ((_ extract 31 31) v___ieee754_logf_~ix~0_18) ((_ extract 30 23) v___ieee754_logf_~ix~0_18) ((_ extract 22 0) v___ieee754_logf_~ix~0_18)) |__ieee754_logf_#in~x|) (not (= (_ bv127 32) (bvadd (bvashr v___ieee754_logf_~ix~0_18 (_ bv23 32)) (bvneg (bvneg (bvashr (bvand (_ bv8388608 32) (bvadd (bvand (_ bv8388607 32) v___ieee754_logf_~ix~0_18) (_ bv4913952 32))) (_ bv23 32))))))))) (= |__ieee754_logf_#in~x| (fp ((_ extract 31 31) __ieee754_logf_~ix~0) ((_ extract 30 23) __ieee754_logf_~ix~0) ((_ extract 22 0) __ieee754_logf_~ix~0))))) [2018-12-01 13:17:59,535 INFO L451 ceAbstractionStarter]: At program point __ieee754_logfENTRY(lines 20 96) the Hoare annotation is: true [2018-12-01 13:17:59,535 INFO L448 ceAbstractionStarter]: For program point __ieee754_logfFINAL(lines 20 96) no Hoare annotation was computed. [2018-12-01 13:17:59,535 INFO L448 ceAbstractionStarter]: For program point L57(lines 57 64) no Hoare annotation was computed. [2018-12-01 13:17:59,535 INFO L448 ceAbstractionStarter]: For program point L24-1(lines 24 28) no Hoare annotation was computed. [2018-12-01 13:17:59,535 INFO L444 ceAbstractionStarter]: At program point L24-2(lines 24 28) the Hoare annotation is: (or (not (= ((_ to_fp 8 24) roundNearestTiesToEven (_ +zero 11 53)) ~zero_log~0)) (= __ieee754_logf_~x |__ieee754_logf_#in~x|)) [2018-12-01 13:17:59,535 INFO L448 ceAbstractionStarter]: For program point L24-3(lines 24 28) no Hoare annotation was computed. [2018-12-01 13:17:59,535 INFO L448 ceAbstractionStarter]: For program point L49-1(lines 49 53) no Hoare annotation was computed. [2018-12-01 13:17:59,535 INFO L444 ceAbstractionStarter]: At program point L49-2(lines 49 53) the Hoare annotation is: (or (not (= ((_ to_fp 8 24) roundNearestTiesToEven (_ +zero 11 53)) ~zero_log~0)) (and (= __ieee754_logf_~x |__ieee754_logf_#in~x|) (exists ((v___ieee754_logf_~ix~0_19 (_ BitVec 32))) (and (= (bvand (_ bv8388607 32) v___ieee754_logf_~ix~0_19) __ieee754_logf_~ix~0) (= (fp ((_ extract 31 31) v___ieee754_logf_~ix~0_19) ((_ extract 30 23) v___ieee754_logf_~ix~0_19) ((_ extract 22 0) v___ieee754_logf_~ix~0_19)) |__ieee754_logf_#in~x|))) (exists ((v___ieee754_logf_~ix~0_18 (_ BitVec 32))) (and (= (fp ((_ extract 31 31) v___ieee754_logf_~ix~0_18) ((_ extract 30 23) v___ieee754_logf_~ix~0_18) ((_ extract 22 0) v___ieee754_logf_~ix~0_18)) |__ieee754_logf_#in~x|) (= (bvadd __ieee754_logf_~k~0 (_ bv127 32)) (bvashr v___ieee754_logf_~ix~0_18 (_ bv23 32))) (= (bvand (_ bv8388608 32) (bvadd (bvand (_ bv8388607 32) v___ieee754_logf_~ix~0_18) (_ bv4913952 32))) __ieee754_logf_~i~0)))) (exists ((v___ieee754_logf_~ix~0_18 (_ BitVec 32))) (and (= (fp ((_ extract 31 31) v___ieee754_logf_~ix~0_18) ((_ extract 30 23) v___ieee754_logf_~ix~0_18) ((_ extract 22 0) v___ieee754_logf_~ix~0_18)) |__ieee754_logf_#in~x|) (not (= (_ bv127 32) (bvadd (bvashr v___ieee754_logf_~ix~0_18 (_ bv23 32)) (bvneg (bvneg (bvashr (bvand (_ bv8388608 32) (bvadd (bvand (_ bv8388607 32) v___ieee754_logf_~ix~0_18) (_ bv4913952 32))) (_ bv23 32)))))))))) [2018-12-01 13:17:59,535 INFO L448 ceAbstractionStarter]: For program point L49-3(lines 49 53) no Hoare annotation was computed. [2018-12-01 13:17:59,535 INFO L448 ceAbstractionStarter]: For program point L37(lines 37 45) no Hoare annotation was computed. [2018-12-01 13:17:59,536 INFO L448 ceAbstractionStarter]: For program point L37-1(lines 37 45) no Hoare annotation was computed. [2018-12-01 13:17:59,536 INFO L448 ceAbstractionStarter]: For program point L66(lines 66 71) no Hoare annotation was computed. [2018-12-01 13:17:59,536 INFO L448 ceAbstractionStarter]: For program point L33(lines 33 34) no Hoare annotation was computed. [2018-12-01 13:17:59,536 INFO L448 ceAbstractionStarter]: For program point __ieee754_logfEXIT(lines 20 96) no Hoare annotation was computed. [2018-12-01 13:17:59,536 INFO L448 ceAbstractionStarter]: For program point L91(lines 91 94) no Hoare annotation was computed. [2018-12-01 13:17:59,536 INFO L448 ceAbstractionStarter]: For program point L58(lines 58 63) no Hoare annotation was computed. [2018-12-01 13:17:59,536 INFO L448 ceAbstractionStarter]: For program point L83(lines 83 95) no Hoare annotation was computed. [2018-12-01 13:17:59,536 INFO L448 ceAbstractionStarter]: For program point L35(lines 35 36) no Hoare annotation was computed. [2018-12-01 13:17:59,536 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-12-01 13:17:59,536 INFO L444 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: (= ~zero_log~0 ((_ to_fp 8 24) roundNearestTiesToEven (_ +zero 11 53))) [2018-12-01 13:17:59,536 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-12-01 13:17:59,536 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-12-01 13:17:59,537 INFO L451 ceAbstractionStarter]: At program point mainENTRY(lines 110 126) the Hoare annotation is: true [2018-12-01 13:17:59,537 INFO L448 ceAbstractionStarter]: For program point L121(line 121) no Hoare annotation was computed. [2018-12-01 13:17:59,537 INFO L448 ceAbstractionStarter]: For program point mainEXIT(lines 110 126) no Hoare annotation was computed. [2018-12-01 13:17:59,537 INFO L448 ceAbstractionStarter]: For program point L120(line 120) no Hoare annotation was computed. [2018-12-01 13:17:59,537 INFO L444 ceAbstractionStarter]: At program point L120-1(line 120) the Hoare annotation is: (let ((.cse0 ((_ to_fp 8 24) roundNearestTiesToEven (_ +zero 11 53)))) (or (not (= .cse0 ~zero_log~0)) (and (= .cse0 main_~res~0) |main_#t~short10| (= ((_ to_fp 8 24) roundNearestTiesToEven 1.0) main_~x~0)))) [2018-12-01 13:17:59,537 INFO L448 ceAbstractionStarter]: For program point L120-2(line 120) no Hoare annotation was computed. [2018-12-01 13:17:59,537 INFO L444 ceAbstractionStarter]: At program point L117(line 117) the Hoare annotation is: (or (not (= ((_ to_fp 8 24) roundNearestTiesToEven (_ +zero 11 53)) ~zero_log~0)) (= ((_ to_fp 8 24) roundNearestTiesToEven 1.0) main_~x~0)) [2018-12-01 13:17:59,537 INFO L448 ceAbstractionStarter]: For program point L117-1(line 117) no Hoare annotation was computed. [2018-12-01 13:17:59,537 INFO L448 ceAbstractionStarter]: For program point L120-4(lines 120 123) no Hoare annotation was computed. [2018-12-01 13:17:59,537 INFO L448 ceAbstractionStarter]: For program point mainFINAL(lines 110 126) no Hoare annotation was computed. [2018-12-01 13:17:59,537 INFO L448 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 121) no Hoare annotation was computed. [2018-12-01 13:17:59,538 INFO L448 ceAbstractionStarter]: For program point __signbit_floatFINAL(lines 98 108) no Hoare annotation was computed. [2018-12-01 13:17:59,538 INFO L451 ceAbstractionStarter]: At program point __signbit_floatENTRY(lines 98 108) the Hoare annotation is: true [2018-12-01 13:17:59,538 INFO L448 ceAbstractionStarter]: For program point __signbit_floatEXIT(lines 98 108) no Hoare annotation was computed. [2018-12-01 13:17:59,538 INFO L448 ceAbstractionStarter]: For program point L101-1(lines 101 105) no Hoare annotation was computed. [2018-12-01 13:17:59,538 INFO L444 ceAbstractionStarter]: At program point L101-2(lines 101 105) the Hoare annotation is: (or (not (= ((_ to_fp 8 24) roundNearestTiesToEven (_ +zero 11 53)) ~zero_log~0)) (= |__signbit_float_#in~x| __signbit_float_~x)) [2018-12-01 13:17:59,538 INFO L448 ceAbstractionStarter]: For program point L101-3(lines 101 105) no Hoare annotation was computed. [2018-12-01 13:17:59,542 FATAL L292 ToolchainWalker]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.UnsupportedOperationException: translation of (bvneg (_ BitVec 32) (_ BitVec 32)) not yet implemented, please contact Matthias at de.uni_freiburg.informatik.ultimate.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:209) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:165) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:165) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:165) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:165) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:165) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:446) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:135) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:165) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.RCFGBacktranslator.translateExpression(RCFGBacktranslator.java:394) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.RCFGBacktranslator.translateExpression(RCFGBacktranslator.java:1) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateExpression(ModelTranslationContainer.java:105) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateExpressionToString(ModelTranslationContainer.java:89) at de.uni_freiburg.informatik.ultimate.core.lib.results.InvariantResult.getLongDescription(InvariantResult.java:65) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ResultService.reportResult(ResultService.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.reportResult(TraceAbstractionStarter.java:560) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.createInvariantResults(TraceAbstractionStarter.java:257) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:214) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:126) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2018-12-01 13:17:59,543 INFO L168 Benchmark]: Toolchain (without parser) took 178253.94 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 122.2 MB). Free memory was 944.7 MB in the beginning and 1.0 GB in the end (delta: -83.1 MB). Peak memory consumption was 39.0 MB. Max. memory is 11.5 GB. [2018-12-01 13:17:59,544 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 972.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-01 13:17:59,544 INFO L168 Benchmark]: CACSL2BoogieTranslator took 205.99 ms. Allocated memory is still 1.0 GB. Free memory was 944.7 MB in the beginning and 928.6 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. [2018-12-01 13:17:59,545 INFO L168 Benchmark]: Boogie Procedure Inliner took 20.11 ms. Allocated memory is still 1.0 GB. Free memory is still 928.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-01 13:17:59,545 INFO L168 Benchmark]: Boogie Preprocessor took 53.82 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 125.8 MB). Free memory was 928.6 MB in the beginning and 1.1 GB in the end (delta: -185.3 MB). Peak memory consumption was 13.9 MB. Max. memory is 11.5 GB. [2018-12-01 13:17:59,545 INFO L168 Benchmark]: RCFGBuilder took 11654.69 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: 33.4 MB). Peak memory consumption was 33.4 MB. Max. memory is 11.5 GB. [2018-12-01 13:17:59,546 INFO L168 Benchmark]: TraceAbstraction took 166316.68 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: -3.7 MB). Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 52.7 MB). Peak memory consumption was 49.0 MB. Max. memory is 11.5 GB. [2018-12-01 13:17:59,548 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 972.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 205.99 ms. Allocated memory is still 1.0 GB. Free memory was 944.7 MB in the beginning and 928.6 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 20.11 ms. Allocated memory is still 1.0 GB. Free memory is still 928.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 53.82 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 125.8 MB). Free memory was 928.6 MB in the beginning and 1.1 GB in the end (delta: -185.3 MB). Peak memory consumption was 13.9 MB. Max. memory is 11.5 GB. * RCFGBuilder took 11654.69 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: 33.4 MB). Peak memory consumption was 33.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 166316.68 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: -3.7 MB). Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 52.7 MB). Peak memory consumption was 49.0 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 121]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - ExceptionOrErrorResult: UnsupportedOperationException: translation of (bvneg (_ BitVec 32) (_ BitVec 32)) not yet implemented, please contact Matthias de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: UnsupportedOperationException: translation of (bvneg (_ BitVec 32) (_ BitVec 32)) not yet implemented, please contact Matthias: de.uni_freiburg.informatik.ultimate.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:209) RESULT: Ultimate could not prove your program: Toolchain returned no result. [MP z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forcibly destroying the process Received shutdown request...