./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/float-benchs/filter_iir_true-unreach-call.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5842f4b8 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_3a4f848c-1dbb-473f-ad83-077c7879f7c9/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_3a4f848c-1dbb-473f-ad83-077c7879f7c9/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_3a4f848c-1dbb-473f-ad83-077c7879f7c9/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_3a4f848c-1dbb-473f-ad83-077c7879f7c9/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-benchs/filter_iir_true-unreach-call.c -s /tmp/vcloud-vcloud-master/worker/working_dir_3a4f848c-1dbb-473f-ad83-077c7879f7c9/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_3a4f848c-1dbb-473f-ad83-077c7879f7c9/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 4d8de78cb0edef97ecd7b2050e9bc61ccb30afeb ............................................................................................................................................................................................................................................................................................................................... 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_3a4f848c-1dbb-473f-ad83-077c7879f7c9/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_3a4f848c-1dbb-473f-ad83-077c7879f7c9/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_3a4f848c-1dbb-473f-ad83-077c7879f7c9/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_3a4f848c-1dbb-473f-ad83-077c7879f7c9/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-benchs/filter_iir_true-unreach-call.c -s /tmp/vcloud-vcloud-master/worker/working_dir_3a4f848c-1dbb-473f-ad83-077c7879f7c9/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_3a4f848c-1dbb-473f-ad83-077c7879f7c9/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 4d8de78cb0edef97ecd7b2050e9bc61ccb30afeb .............................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-5842f4b [2018-11-18 08:34:28,432 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 08:34:28,433 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 08:34:28,441 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 08:34:28,441 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 08:34:28,442 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 08:34:28,442 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 08:34:28,444 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 08:34:28,445 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 08:34:28,445 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 08:34:28,446 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 08:34:28,446 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 08:34:28,447 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 08:34:28,448 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 08:34:28,449 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 08:34:28,449 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 08:34:28,450 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 08:34:28,451 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 08:34:28,452 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 08:34:28,453 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 08:34:28,454 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 08:34:28,455 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 08:34:28,456 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 08:34:28,457 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 08:34:28,457 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 08:34:28,457 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 08:34:28,458 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 08:34:28,459 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 08:34:28,459 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 08:34:28,460 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 08:34:28,460 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 08:34:28,461 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 08:34:28,461 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 08:34:28,462 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 08:34:28,462 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 08:34:28,462 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 08:34:28,463 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_3a4f848c-1dbb-473f-ad83-077c7879f7c9/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-11-18 08:34:28,472 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 08:34:28,473 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 08:34:28,473 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-18 08:34:28,473 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-11-18 08:34:28,474 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-18 08:34:28,474 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-18 08:34:28,474 INFO L133 SettingsManager]: * Use SBE=true [2018-11-18 08:34:28,474 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 08:34:28,474 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-18 08:34:28,474 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-18 08:34:28,475 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-18 08:34:28,475 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 08:34:28,475 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-18 08:34:28,475 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-18 08:34:28,475 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-18 08:34:28,475 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-18 08:34:28,475 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 08:34:28,476 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 08:34:28,476 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-18 08:34:28,476 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 08:34:28,476 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 08:34:28,476 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-18 08:34:28,476 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-18 08:34:28,476 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 08:34:28,477 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 08:34:28,477 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-18 08:34:28,479 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-18 08:34:28,479 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-18 08:34:28,479 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-18 08:34:28,479 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-18 08:34:28,479 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_3a4f848c-1dbb-473f-ad83-077c7879f7c9/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 -> 4d8de78cb0edef97ecd7b2050e9bc61ccb30afeb [2018-11-18 08:34:28,504 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 08:34:28,514 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 08:34:28,516 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 08:34:28,518 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 08:34:28,518 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 08:34:28,519 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_3a4f848c-1dbb-473f-ad83-077c7879f7c9/bin-2019/uautomizer/../../sv-benchmarks/c/float-benchs/filter_iir_true-unreach-call.c [2018-11-18 08:34:28,565 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_3a4f848c-1dbb-473f-ad83-077c7879f7c9/bin-2019/uautomizer/data/1d70868f1/197411ed77004ab6b7998af66a3d1eb2/FLAG842235f0d [2018-11-18 08:34:28,904 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 08:34:28,905 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_3a4f848c-1dbb-473f-ad83-077c7879f7c9/sv-benchmarks/c/float-benchs/filter_iir_true-unreach-call.c [2018-11-18 08:34:28,911 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_3a4f848c-1dbb-473f-ad83-077c7879f7c9/bin-2019/uautomizer/data/1d70868f1/197411ed77004ab6b7998af66a3d1eb2/FLAG842235f0d [2018-11-18 08:34:29,330 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_3a4f848c-1dbb-473f-ad83-077c7879f7c9/bin-2019/uautomizer/data/1d70868f1/197411ed77004ab6b7998af66a3d1eb2 [2018-11-18 08:34:29,333 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 08:34:29,334 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-18 08:34:29,334 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 08:34:29,335 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 08:34:29,337 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 08:34:29,337 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:34:29" (1/1) ... [2018-11-18 08:34:29,339 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31472e55 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:34:29, skipping insertion in model container [2018-11-18 08:34:29,339 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:34:29" (1/1) ... [2018-11-18 08:34:29,345 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 08:34:29,360 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 08:34:29,481 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 08:34:29,490 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 08:34:29,509 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 08:34:29,522 INFO L195 MainTranslator]: Completed translation [2018-11-18 08:34:29,523 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:34:29 WrapperNode [2018-11-18 08:34:29,523 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 08:34:29,523 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 08:34:29,523 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 08:34:29,523 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 08:34:29,532 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:34:29" (1/1) ... [2018-11-18 08:34:29,532 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:34:29" (1/1) ... [2018-11-18 08:34:29,539 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:34:29" (1/1) ... [2018-11-18 08:34:29,539 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:34:29" (1/1) ... [2018-11-18 08:34:29,546 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:34:29" (1/1) ... [2018-11-18 08:34:29,549 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:34:29" (1/1) ... [2018-11-18 08:34:29,550 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:34:29" (1/1) ... [2018-11-18 08:34:29,587 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 08:34:29,588 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 08:34:29,588 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 08:34:29,588 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 08:34:29,588 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:34:29" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3a4f848c-1dbb-473f-ad83-077c7879f7c9/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 [2018-11-18 08:34:29,622 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-18 08:34:29,622 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 08:34:29,622 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-11-18 08:34:29,622 INFO L138 BoogieDeclarations]: Found implementation of procedure iir4 [2018-11-18 08:34:29,622 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-18 08:34:29,622 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-11-18 08:34:29,622 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2018-11-18 08:34:29,622 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2018-11-18 08:34:29,623 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-11-18 08:34:29,623 INFO L130 BoogieDeclarations]: Found specification of procedure iir4 [2018-11-18 08:34:29,623 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2018-11-18 08:34:29,623 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2018-11-18 08:34:29,623 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-18 08:34:29,623 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-18 08:34:29,623 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-18 08:34:29,623 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real [2018-11-18 08:34:29,623 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 08:34:29,624 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-18 08:34:29,832 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 08:34:29,833 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:34:29 BoogieIcfgContainer [2018-11-18 08:34:29,833 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 08:34:29,833 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-18 08:34:29,833 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-18 08:34:29,836 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-18 08:34:29,836 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 08:34:29" (1/3) ... [2018-11-18 08:34:29,837 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70165fae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:34:29, skipping insertion in model container [2018-11-18 08:34:29,837 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:34:29" (2/3) ... [2018-11-18 08:34:29,837 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70165fae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:34:29, skipping insertion in model container [2018-11-18 08:34:29,837 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:34:29" (3/3) ... [2018-11-18 08:34:29,839 INFO L112 eAbstractionObserver]: Analyzing ICFG filter_iir_true-unreach-call.c [2018-11-18 08:34:29,847 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-18 08:34:29,853 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-18 08:34:29,864 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-18 08:34:29,889 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-18 08:34:29,890 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-18 08:34:29,890 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-18 08:34:29,890 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-18 08:34:29,890 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 08:34:29,891 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 08:34:29,891 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-18 08:34:29,891 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 08:34:29,891 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-18 08:34:29,904 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states. [2018-11-18 08:34:29,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-11-18 08:34:29,907 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 08:34:29,908 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 08:34:29,909 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 08:34:29,912 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 08:34:29,913 INFO L82 PathProgramCache]: Analyzing trace with hash -649583638, now seen corresponding path program 1 times [2018-11-18 08:34:29,914 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 08:34:29,914 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 08:34:29,942 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 08:34:29,943 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 08:34:29,943 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 08:34:30,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 08:34:30,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 08:34:30,100 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-11-18 08:34:30,122 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: IntegerLiteral 26 could not be translated for associated CType ARRAY#_2_~DOUBLE# [2018-11-18 08:34:30,123 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: IntegerLiteral 29 could not be translated for associated CType ARRAY#_3_~DOUBLE# [2018-11-18 08:34:30,123 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: IntegerLiteral 32 could not be translated for associated CType ARRAY#_2_~DOUBLE# [2018-11-18 08:34:30,123 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: IntegerLiteral 35 could not be translated for associated CType ARRAY#_2_~DOUBLE# [2018-11-18 08:34:30,123 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: IntegerLiteral 36 could not be translated for associated CType ARRAY#_3_~DOUBLE# [2018-11-18 08:34:30,124 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: IntegerLiteral 34 could not be translated for associated CType ARRAY#_3_~DOUBLE# [2018-11-18 08:34:30,124 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: IntegerLiteral 42 could not be translated for associated CType ARRAY#_2_~DOUBLE# [2018-11-18 08:34:30,124 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: IntegerLiteral 51 could not be translated for associated CType ARRAY#_3_~DOUBLE# [2018-11-18 08:34:30,137 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 08:34:30 BoogieIcfgContainer [2018-11-18 08:34:30,137 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-18 08:34:30,137 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-18 08:34:30,137 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-18 08:34:30,137 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-18 08:34:30,138 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:34:29" (3/4) ... [2018-11-18 08:34:30,140 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-11-18 08:34:30,140 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-18 08:34:30,141 INFO L168 Benchmark]: Toolchain (without parser) took 807.23 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 134.7 MB). Free memory was 960.8 MB in the beginning and 1.1 GB in the end (delta: -115.5 MB). Peak memory consumption was 19.3 MB. Max. memory is 11.5 GB. [2018-11-18 08:34:30,142 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 982.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 08:34:30,142 INFO L168 Benchmark]: CACSL2BoogieTranslator took 188.57 ms. Allocated memory is still 1.0 GB. Free memory was 960.8 MB in the beginning and 944.7 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. [2018-11-18 08:34:30,143 INFO L168 Benchmark]: Boogie Preprocessor took 64.20 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 134.7 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -186.2 MB). Peak memory consumption was 14.9 MB. Max. memory is 11.5 GB. [2018-11-18 08:34:30,144 INFO L168 Benchmark]: RCFGBuilder took 245.33 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 22.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 11.5 GB. [2018-11-18 08:34:30,144 INFO L168 Benchmark]: TraceAbstraction took 303.65 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 32.2 MB). Peak memory consumption was 32.2 MB. Max. memory is 11.5 GB. [2018-11-18 08:34:30,145 INFO L168 Benchmark]: Witness Printer took 2.92 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 08:34:30,146 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 982.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 188.57 ms. Allocated memory is still 1.0 GB. Free memory was 960.8 MB in the beginning and 944.7 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 64.20 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 134.7 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -186.2 MB). Peak memory consumption was 14.9 MB. Max. memory is 11.5 GB. * RCFGBuilder took 245.33 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 22.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 303.65 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 32.2 MB). Peak memory consumption was 32.2 MB. Max. memory is 11.5 GB. * Witness Printer took 2.92 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.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IntegerLiteral 26 could not be translated for associated CType ARRAY#_2_~DOUBLE# - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IntegerLiteral 29 could not be translated for associated CType ARRAY#_3_~DOUBLE# - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IntegerLiteral 32 could not be translated for associated CType ARRAY#_2_~DOUBLE# - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IntegerLiteral 35 could not be translated for associated CType ARRAY#_2_~DOUBLE# - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IntegerLiteral 36 could not be translated for associated CType ARRAY#_3_~DOUBLE# - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IntegerLiteral 34 could not be translated for associated CType ARRAY#_3_~DOUBLE# - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IntegerLiteral 42 could not be translated for associated CType ARRAY#_2_~DOUBLE# - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IntegerLiteral 51 could not be translated for associated CType ARRAY#_3_~DOUBLE# * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 8]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 49, overapproximation of to_real at line 11, overapproximation of someBinaryArithmeticDOUBLEoperation at line 23. Possible FailurePath: [L11] FCALL double A1[3] = { 1, 0.5179422053046, 1.0 }; [L12] FCALL double b1[2] = { 1.470767736573, 0.5522073405779 }; [L13] FCALL double A2[3] = { 1, 1.633101801841, 1.0 }; [L14] FCALL double b2[2] = { 1.742319554830, 0.820939679242 }; [L16] FCALL double D1[2], D2[2]; [L17] FCALL double P, X; VAL [\old(A1)=null, \old(A1)=null, \old(A2)=null, \old(A2)=null, \old(b1)=null, \old(b1)=null, \old(b2)=null, \old(b2)=null, \old(D1)=37, \old(D1)=30, \old(D2)=48, \old(D2)=39, \old(P)=43, \old(P)=56, \old(X)=52, \old(X)=28, A1={38:0}, A2={49:0}, b1={41:0}, b2={33:0}, D1={31:0}, D2={44:0}, P={27:0}, X={54:0}] [L38] FCALL D1[0] = 0. [L38] FCALL D1[1] = 0. [L39] FCALL D2[0] = 0. [L39] FCALL D2[1] = 0. [L40] FCALL P = 0. VAL [A1={38:0}, A2={49:0}, b1={41:0}, b2={33:0}, D1={31:0}, D2={44:0}, P={27:0}, X={54:0}] [L42] COND TRUE 1 [L44] FCALL X = __VERIFIER_nondet_double() [L45] EXPR, FCALL \read(X) [L45] X >= -10. && X <= 10. [L45] EXPR, FCALL \read(X) [L45] X >= -10. && X <= 10. VAL [\read(X)=53, \read(X)=53, A1={38:0}, A2={49:0}, b1={41:0}, b2={33:0}, D1={31:0}, D2={44:0}, P={27:0}, X={54:0}, X >= -10. && X <= 10.=1] [L47] CALL iir4(&X, &P) VAL [A1={38:0}, A2={49:0}, b1={41:0}, b2={33:0}, D1={31:0}, D2={44:0}, P={27:0}, X={54:0}, x={54:0}, y={27:0}] [L21] double x1, y1, t1, t2; [L23] EXPR, FCALL \read(*x) [L23] x1 = 0.0117749388721091 * *x [L25] EXPR, FCALL b1[0] [L25] EXPR, FCALL D1[0] [L25] EXPR, FCALL b1[1] [L25] EXPR, FCALL D1[1] [L25] t1 = x1 + b1[0]*D1[0] - b1[1]*D1[1] [L26] EXPR, FCALL A1[0] [L26] EXPR, FCALL A1[1] [L26] EXPR, FCALL D1[0] [L26] EXPR, FCALL A1[2] [L26] EXPR, FCALL D1[1] [L26] y1 = A1[0]*t1 - A1[1]*D1[0] + A1[2]*D1[1] [L27] EXPR, FCALL D1[0] [L27] FCALL D1[1] = D1[0] [L28] FCALL D1[0] = t1 [L30] EXPR, FCALL b2[0] [L30] EXPR, FCALL D2[0] [L30] EXPR, FCALL b2[1] [L30] EXPR, FCALL D2[1] [L30] t2 = y1 + b2[0]*D2[0] - b2[1]*D2[1] [L31] EXPR, FCALL A2[0] [L31] EXPR, FCALL A2[1] [L31] EXPR, FCALL D2[0] [L31] EXPR, FCALL A2[2] [L31] EXPR, FCALL D2[1] [L31] FCALL *y = A2[0]*t2 - A2[1]*D2[0] + A2[2]*D2[1] [L32] EXPR, FCALL D2[0] [L32] FCALL D2[1] = D2[0] [L33] RET, FCALL D2[0] = t2 VAL [A1={38:0}, A2={49:0}, b1={41:0}, b2={33:0}, D1={31:0}, D2={44:0}, P={27:0}, t1=25, t2=50, X={54:0}, x={54:0}, x={54:0}, y={27:0}, y={27:0}] [L47] iir4(&X, &P) VAL [A1={38:0}, A2={49:0}, b1={41:0}, b2={33:0}, D1={31:0}, D2={44:0}, P={27:0}, X={54:0}] [L49] EXPR, FCALL \read(P) [L49] EXPR P >= -1e30 && P <= 1e30 [L49] EXPR, FCALL \read(P) [L49] EXPR P >= -1e30 && P <= 1e30 VAL [\read(P)=45, \read(P)=45, A1={38:0}, A2={49:0}, b1={41:0}, b2={33:0}, D1={31:0}, D2={44:0}, P={27:0}, P >= -1e30 && P <= 1e30=0, X={54:0}] [L49] CALL __VERIFIER_assert(P >= -1e30 && P <= 1e30) VAL [\old(cond)=0, A1={38:0}, A2={49:0}, b1={41:0}, b2={33:0}, D1={31:0}, D2={44:0}, P={27:0}, X={54:0}] [L8] COND TRUE !(cond) VAL [\old(cond)=0, A1={38:0}, A2={49:0}, b1={41:0}, b2={33:0}, cond=0, D1={31:0}, D2={44:0}, P={27:0}, X={54:0}] [L8] __VERIFIER_error() VAL [\old(cond)=0, A1={38:0}, A2={49:0}, b1={41:0}, b2={33:0}, cond=0, D1={31:0}, D2={44:0}, P={27:0}, X={54:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 29 locations, 1 error locations. UNSAFE Result, 0.2s OverallTime, 1 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=29occurred 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: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 20 NumberOfCodeBlocks, 20 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 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 0.1.23-5842f4b [2018-11-18 08:34:31,568 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 08:34:31,569 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 08:34:31,577 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 08:34:31,577 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 08:34:31,577 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 08:34:31,578 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 08:34:31,580 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 08:34:31,581 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 08:34:31,581 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 08:34:31,582 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 08:34:31,582 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 08:34:31,583 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 08:34:31,584 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 08:34:31,584 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 08:34:31,585 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 08:34:31,586 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 08:34:31,587 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 08:34:31,588 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 08:34:31,590 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 08:34:31,591 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 08:34:31,591 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 08:34:31,593 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 08:34:31,593 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 08:34:31,594 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 08:34:31,594 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 08:34:31,595 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 08:34:31,596 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 08:34:31,596 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 08:34:31,597 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 08:34:31,597 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 08:34:31,598 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 08:34:31,598 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 08:34:31,598 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 08:34:31,599 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 08:34:31,599 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 08:34:31,600 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_3a4f848c-1dbb-473f-ad83-077c7879f7c9/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2018-11-18 08:34:31,610 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 08:34:31,610 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 08:34:31,611 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-18 08:34:31,611 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-11-18 08:34:31,611 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-18 08:34:31,611 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-18 08:34:31,612 INFO L133 SettingsManager]: * Use SBE=true [2018-11-18 08:34:31,612 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 08:34:31,612 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-18 08:34:31,612 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-18 08:34:31,612 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 08:34:31,612 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-18 08:34:31,612 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-18 08:34:31,613 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-18 08:34:31,613 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-11-18 08:34:31,613 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-11-18 08:34:31,613 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-18 08:34:31,613 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 08:34:31,613 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 08:34:31,613 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-18 08:34:31,614 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 08:34:31,614 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 08:34:31,614 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-18 08:34:31,614 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-18 08:34:31,614 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 08:34:31,614 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 08:34:31,614 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-18 08:34:31,615 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-18 08:34:31,615 INFO L133 SettingsManager]: * Trace refinement strategy=WOLF [2018-11-18 08:34:31,615 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-18 08:34:31,615 INFO L133 SettingsManager]: * Command for external solver=cvc4nyu --tear-down-incremental --rewrite-divk --print-success --lang smt [2018-11-18 08:34:31,615 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-11-18 08:34:31,615 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_3a4f848c-1dbb-473f-ad83-077c7879f7c9/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 -> 4d8de78cb0edef97ecd7b2050e9bc61ccb30afeb [2018-11-18 08:34:31,644 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 08:34:31,652 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 08:34:31,654 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 08:34:31,655 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 08:34:31,655 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 08:34:31,656 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_3a4f848c-1dbb-473f-ad83-077c7879f7c9/bin-2019/uautomizer/../../sv-benchmarks/c/float-benchs/filter_iir_true-unreach-call.c [2018-11-18 08:34:31,692 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_3a4f848c-1dbb-473f-ad83-077c7879f7c9/bin-2019/uautomizer/data/a062b6b57/6fae08e115e1471bb01164b3bf9deb1f/FLAG09d009089 [2018-11-18 08:34:32,097 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 08:34:32,098 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_3a4f848c-1dbb-473f-ad83-077c7879f7c9/sv-benchmarks/c/float-benchs/filter_iir_true-unreach-call.c [2018-11-18 08:34:32,102 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_3a4f848c-1dbb-473f-ad83-077c7879f7c9/bin-2019/uautomizer/data/a062b6b57/6fae08e115e1471bb01164b3bf9deb1f/FLAG09d009089 [2018-11-18 08:34:32,110 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_3a4f848c-1dbb-473f-ad83-077c7879f7c9/bin-2019/uautomizer/data/a062b6b57/6fae08e115e1471bb01164b3bf9deb1f [2018-11-18 08:34:32,112 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 08:34:32,113 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-18 08:34:32,114 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 08:34:32,114 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 08:34:32,117 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 08:34:32,118 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:34:32" (1/1) ... [2018-11-18 08:34:32,119 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56f8f505 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:34:32, skipping insertion in model container [2018-11-18 08:34:32,120 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:34:32" (1/1) ... [2018-11-18 08:34:32,125 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 08:34:32,141 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 08:34:32,267 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 08:34:32,285 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 08:34:32,307 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 08:34:32,326 INFO L195 MainTranslator]: Completed translation [2018-11-18 08:34:32,326 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:34:32 WrapperNode [2018-11-18 08:34:32,326 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 08:34:32,327 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 08:34:32,327 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 08:34:32,327 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 08:34:32,336 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:34:32" (1/1) ... [2018-11-18 08:34:32,336 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:34:32" (1/1) ... [2018-11-18 08:34:32,343 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:34:32" (1/1) ... [2018-11-18 08:34:32,344 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:34:32" (1/1) ... [2018-11-18 08:34:32,355 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:34:32" (1/1) ... [2018-11-18 08:34:32,360 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:34:32" (1/1) ... [2018-11-18 08:34:32,362 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:34:32" (1/1) ... [2018-11-18 08:34:32,365 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 08:34:32,365 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 08:34:32,365 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 08:34:32,365 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 08:34:32,366 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:34:32" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3a4f848c-1dbb-473f-ad83-077c7879f7c9/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 [2018-11-18 08:34:32,450 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-18 08:34:32,451 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 08:34:32,451 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-11-18 08:34:32,451 INFO L138 BoogieDeclarations]: Found implementation of procedure iir4 [2018-11-18 08:34:32,451 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-18 08:34:32,451 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-11-18 08:34:32,451 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2018-11-18 08:34:32,451 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2018-11-18 08:34:32,451 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-11-18 08:34:32,452 INFO L130 BoogieDeclarations]: Found specification of procedure iir4 [2018-11-18 08:34:32,452 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2018-11-18 08:34:32,452 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2018-11-18 08:34:32,452 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-18 08:34:32,452 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-18 08:34:32,452 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-18 08:34:32,452 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intFLOATTYPE8 [2018-11-18 08:34:32,452 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 08:34:32,452 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-18 08:34:32,615 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-18 08:34:32,627 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-18 08:34:32,727 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-18 08:34:35,091 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-18 08:34:35,112 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 08:34:35,112 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:34:35 BoogieIcfgContainer [2018-11-18 08:34:35,112 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 08:34:35,113 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-18 08:34:35,113 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-18 08:34:35,115 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-18 08:34:35,116 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 08:34:32" (1/3) ... [2018-11-18 08:34:35,116 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ec19906 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:34:35, skipping insertion in model container [2018-11-18 08:34:35,116 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:34:32" (2/3) ... [2018-11-18 08:34:35,117 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ec19906 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:34:35, skipping insertion in model container [2018-11-18 08:34:35,117 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:34:35" (3/3) ... [2018-11-18 08:34:35,118 INFO L112 eAbstractionObserver]: Analyzing ICFG filter_iir_true-unreach-call.c [2018-11-18 08:34:35,124 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-18 08:34:35,128 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-18 08:34:35,141 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-18 08:34:35,160 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-18 08:34:35,160 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-18 08:34:35,160 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-18 08:34:35,160 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-18 08:34:35,160 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 08:34:35,160 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 08:34:35,161 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-18 08:34:35,161 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 08:34:35,161 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-18 08:34:35,170 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states. [2018-11-18 08:34:35,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-11-18 08:34:35,174 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 08:34:35,175 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 08:34:35,176 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 08:34:35,179 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 08:34:35,179 INFO L82 PathProgramCache]: Analyzing trace with hash -649583638, now seen corresponding path program 1 times [2018-11-18 08:34:35,182 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 08:34:35,183 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3a4f848c-1dbb-473f-ad83-077c7879f7c9/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 [2018-11-18 08:34:35,187 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 08:34:37,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 08:34:38,218 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 08:34:38,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 08:34:38,231 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 08:34:38,278 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 08:34:38,279 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-18 08:34:38,282 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-18 08:34:38,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-18 08:34:38,292 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-18 08:34:38,293 INFO L87 Difference]: Start difference. First operand 29 states. Second operand 2 states. [2018-11-18 08:34:38,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 08:34:38,303 INFO L93 Difference]: Finished difference Result 29 states and 33 transitions. [2018-11-18 08:34:38,303 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-18 08:34:38,304 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 20 [2018-11-18 08:34:38,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 08:34:38,310 INFO L225 Difference]: With dead ends: 29 [2018-11-18 08:34:38,310 INFO L226 Difference]: Without dead ends: 0 [2018-11-18 08:34:38,313 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-18 08:34:38,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-18 08:34:38,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-18 08:34:38,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-18 08:34:38,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-18 08:34:38,330 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 20 [2018-11-18 08:34:38,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 08:34:38,331 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-18 08:34:38,331 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-18 08:34:38,331 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-18 08:34:38,331 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-18 08:34:38,335 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-18 08:34:38,403 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2018-11-18 08:34:38,404 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2018-11-18 08:34:38,404 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-18 08:34:38,404 INFO L425 ceAbstractionStarter]: For program point iir4FINAL(lines 19 34) no Hoare annotation was computed. [2018-11-18 08:34:38,404 INFO L425 ceAbstractionStarter]: For program point iir4EXIT(lines 19 34) no Hoare annotation was computed. [2018-11-18 08:34:38,404 INFO L428 ceAbstractionStarter]: At program point iir4ENTRY(lines 19 34) the Hoare annotation is: true [2018-11-18 08:34:38,404 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-18 08:34:38,405 INFO L421 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: false [2018-11-18 08:34:38,405 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-18 08:34:38,405 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-18 08:34:38,405 INFO L425 ceAbstractionStarter]: For program point mainEXIT(lines 36 52) no Hoare annotation was computed. [2018-11-18 08:34:38,405 INFO L425 ceAbstractionStarter]: For program point mainFINAL(lines 36 52) no Hoare annotation was computed. [2018-11-18 08:34:38,405 INFO L425 ceAbstractionStarter]: For program point L42-1(lines 42 50) no Hoare annotation was computed. [2018-11-18 08:34:38,405 INFO L428 ceAbstractionStarter]: At program point L42-3(lines 42 50) the Hoare annotation is: true [2018-11-18 08:34:38,405 INFO L425 ceAbstractionStarter]: For program point L42-4(lines 42 50) no Hoare annotation was computed. [2018-11-18 08:34:38,405 INFO L428 ceAbstractionStarter]: At program point mainENTRY(lines 36 52) the Hoare annotation is: true [2018-11-18 08:34:38,406 INFO L425 ceAbstractionStarter]: For program point L49(line 49) no Hoare annotation was computed. [2018-11-18 08:34:38,406 INFO L428 ceAbstractionStarter]: At program point L47(line 47) the Hoare annotation is: true [2018-11-18 08:34:38,406 INFO L428 ceAbstractionStarter]: At program point L49-2(line 49) the Hoare annotation is: true [2018-11-18 08:34:38,406 INFO L425 ceAbstractionStarter]: For program point L47-1(line 47) no Hoare annotation was computed. [2018-11-18 08:34:38,406 INFO L425 ceAbstractionStarter]: For program point L49-3(line 49) no Hoare annotation was computed. [2018-11-18 08:34:38,406 INFO L425 ceAbstractionStarter]: For program point L45(line 45) no Hoare annotation was computed. [2018-11-18 08:34:38,406 INFO L425 ceAbstractionStarter]: For program point L45-2(line 45) no Hoare annotation was computed. [2018-11-18 08:34:38,406 INFO L428 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(line 8) the Hoare annotation is: true [2018-11-18 08:34:38,407 INFO L425 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(line 8) no Hoare annotation was computed. [2018-11-18 08:34:38,407 INFO L425 ceAbstractionStarter]: For program point L8(line 8) no Hoare annotation was computed. [2018-11-18 08:34:38,407 INFO L425 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2018-11-18 08:34:38,407 INFO L425 ceAbstractionStarter]: For program point L8-1(line 8) no Hoare annotation was computed. [2018-11-18 08:34:38,407 INFO L425 ceAbstractionStarter]: For program point L8-3(line 8) no Hoare annotation was computed. [2018-11-18 08:34:38,413 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 08:34:38 BoogieIcfgContainer [2018-11-18 08:34:38,413 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-18 08:34:38,413 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-18 08:34:38,413 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-18 08:34:38,413 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-18 08:34:38,414 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:34:35" (3/4) ... [2018-11-18 08:34:38,416 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-18 08:34:38,420 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-18 08:34:38,421 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure iir4 [2018-11-18 08:34:38,421 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-18 08:34:38,421 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2018-11-18 08:34:38,425 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 27 nodes and edges [2018-11-18 08:34:38,425 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2018-11-18 08:34:38,425 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2018-11-18 08:34:38,425 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-18 08:34:38,463 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_3a4f848c-1dbb-473f-ad83-077c7879f7c9/bin-2019/uautomizer/witness.graphml [2018-11-18 08:34:38,464 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-18 08:34:38,464 INFO L168 Benchmark]: Toolchain (without parser) took 6351.62 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 168.8 MB). Free memory was 947.9 MB in the beginning and 1.1 GB in the end (delta: -125.5 MB). Peak memory consumption was 43.4 MB. Max. memory is 11.5 GB. [2018-11-18 08:34:38,465 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 08:34:38,466 INFO L168 Benchmark]: CACSL2BoogieTranslator took 212.71 ms. Allocated memory is still 1.0 GB. Free memory was 947.9 MB in the beginning and 931.7 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. [2018-11-18 08:34:38,466 INFO L168 Benchmark]: Boogie Preprocessor took 38.17 ms. Allocated memory is still 1.0 GB. Free memory is still 931.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 08:34:38,466 INFO L168 Benchmark]: RCFGBuilder took 2746.99 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 168.8 MB). Free memory was 931.7 MB in the beginning and 1.1 GB in the end (delta: -186.4 MB). Peak memory consumption was 15.7 MB. Max. memory is 11.5 GB. [2018-11-18 08:34:38,466 INFO L168 Benchmark]: TraceAbstraction took 3300.10 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: 44.8 MB). Peak memory consumption was 44.8 MB. Max. memory is 11.5 GB. [2018-11-18 08:34:38,467 INFO L168 Benchmark]: Witness Printer took 50.49 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 08:34:38,468 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 212.71 ms. Allocated memory is still 1.0 GB. Free memory was 947.9 MB in the beginning and 931.7 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 38.17 ms. Allocated memory is still 1.0 GB. Free memory is still 931.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 2746.99 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 168.8 MB). Free memory was 931.7 MB in the beginning and 1.1 GB in the end (delta: -186.4 MB). Peak memory consumption was 15.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 3300.10 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: 44.8 MB). Peak memory consumption was 44.8 MB. Max. memory is 11.5 GB. * Witness Printer took 50.49 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: - PositiveResult [Line: 8]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 42]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 29 locations, 1 error locations. SAFE Result, 3.2s OverallTime, 1 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 19 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=29occurred 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: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 9 PreInvPairs, 9 NumberOfFragments, 9 HoareAnnotationTreeSize, 9 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 9 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 2.7s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 20 NumberOfCodeBlocks, 20 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 19 ConstructedInterpolants, 0 QuantifiedInterpolants, 361 SizeOfPredicates, 0 NumberOfNonLiveVariables, 110 ConjunctsInSsa, 1 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...