./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-benchs/inv_Newton-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cad46833 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_29ff61d7-aafc-42c7-a30a-5cfea195a250/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_29ff61d7-aafc-42c7-a30a-5cfea195a250/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_29ff61d7-aafc-42c7-a30a-5cfea195a250/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_29ff61d7-aafc-42c7-a30a-5cfea195a250/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/inv_Newton-1.c -s /tmp/vcloud-vcloud-master/worker/working_dir_29ff61d7-aafc-42c7-a30a-5cfea195a250/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_29ff61d7-aafc-42c7-a30a-5cfea195a250/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 94c7e44bedb585ab09170efda1a99dc421396ccb ................................................................................................................................................................................................................................................................................................. Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_29ff61d7-aafc-42c7-a30a-5cfea195a250/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_29ff61d7-aafc-42c7-a30a-5cfea195a250/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_29ff61d7-aafc-42c7-a30a-5cfea195a250/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_29ff61d7-aafc-42c7-a30a-5cfea195a250/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/inv_Newton-1.c -s /tmp/vcloud-vcloud-master/worker/working_dir_29ff61d7-aafc-42c7-a30a-5cfea195a250/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_29ff61d7-aafc-42c7-a30a-5cfea195a250/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 94c7e44bedb585ab09170efda1a99dc421396ccb ....................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-cad4683 [2019-10-22 11:23:42,337 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 11:23:42,338 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 11:23:42,347 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 11:23:42,347 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 11:23:42,348 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 11:23:42,349 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 11:23:42,350 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 11:23:42,352 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 11:23:42,353 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 11:23:42,353 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 11:23:42,354 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 11:23:42,354 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 11:23:42,355 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 11:23:42,356 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 11:23:42,357 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 11:23:42,357 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 11:23:42,358 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 11:23:42,359 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 11:23:42,361 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 11:23:42,362 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 11:23:42,363 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 11:23:42,363 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 11:23:42,364 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 11:23:42,366 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 11:23:42,366 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 11:23:42,366 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 11:23:42,367 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 11:23:42,367 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 11:23:42,368 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 11:23:42,368 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 11:23:42,369 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 11:23:42,369 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 11:23:42,370 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 11:23:42,370 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 11:23:42,370 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 11:23:42,371 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 11:23:42,371 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 11:23:42,371 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 11:23:42,372 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 11:23:42,372 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 11:23:42,373 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_29ff61d7-aafc-42c7-a30a-5cfea195a250/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2019-10-22 11:23:42,383 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 11:23:42,383 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 11:23:42,384 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-10-22 11:23:42,384 INFO L138 SettingsManager]: * User list type=DISABLED [2019-10-22 11:23:42,384 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-10-22 11:23:42,384 INFO L138 SettingsManager]: * Explicit value domain=true [2019-10-22 11:23:42,385 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-10-22 11:23:42,385 INFO L138 SettingsManager]: * Octagon Domain=false [2019-10-22 11:23:42,385 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-10-22 11:23:42,385 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-10-22 11:23:42,385 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-10-22 11:23:42,385 INFO L138 SettingsManager]: * Interval Domain=false [2019-10-22 11:23:42,386 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 11:23:42,386 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-22 11:23:42,387 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-22 11:23:42,387 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-22 11:23:42,387 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 11:23:42,387 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-22 11:23:42,387 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 11:23:42,387 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-22 11:23:42,388 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-22 11:23:42,388 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 11:23:42,388 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-22 11:23:42,388 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 11:23:42,388 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 11:23:42,388 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 11:23:42,389 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-22 11:23:42,389 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 11:23:42,389 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 11:23:42,389 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 11:23:42,389 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-22 11:23:42,389 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-10-22 11:23:42,390 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-22 11:23:42,390 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-22 11:23:42,390 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-22 11:23:42,390 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/working_dir_29ff61d7-aafc-42c7-a30a-5cfea195a250/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 94c7e44bedb585ab09170efda1a99dc421396ccb [2019-10-22 11:23:42,416 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 11:23:42,425 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 11:23:42,428 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 11:23:42,429 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 11:23:42,429 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 11:23:42,430 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_29ff61d7-aafc-42c7-a30a-5cfea195a250/bin/utaipan/../../sv-benchmarks/c/float-benchs/inv_Newton-1.c [2019-10-22 11:23:42,473 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_29ff61d7-aafc-42c7-a30a-5cfea195a250/bin/utaipan/data/5961c0818/077cc4aee1dc4e1097d89468c5aa5073/FLAG057a79642 [2019-10-22 11:23:42,866 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 11:23:42,866 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_29ff61d7-aafc-42c7-a30a-5cfea195a250/sv-benchmarks/c/float-benchs/inv_Newton-1.c [2019-10-22 11:23:42,872 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_29ff61d7-aafc-42c7-a30a-5cfea195a250/bin/utaipan/data/5961c0818/077cc4aee1dc4e1097d89468c5aa5073/FLAG057a79642 [2019-10-22 11:23:43,264 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_29ff61d7-aafc-42c7-a30a-5cfea195a250/bin/utaipan/data/5961c0818/077cc4aee1dc4e1097d89468c5aa5073 [2019-10-22 11:23:43,267 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 11:23:43,268 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 11:23:43,269 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 11:23:43,269 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 11:23:43,273 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 11:23:43,273 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:23:43" (1/1) ... [2019-10-22 11:23:43,275 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@411f8c91 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:23:43, skipping insertion in model container [2019-10-22 11:23:43,275 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:23:43" (1/1) ... [2019-10-22 11:23:43,282 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 11:23:43,298 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 11:23:43,452 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:23:43,456 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 11:23:43,556 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:23:43,575 INFO L192 MainTranslator]: Completed translation [2019-10-22 11:23:43,575 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:23:43 WrapperNode [2019-10-22 11:23:43,575 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 11:23:43,576 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 11:23:43,576 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 11:23:43,576 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 11:23:43,585 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:23:43" (1/1) ... [2019-10-22 11:23:43,595 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:23:43" (1/1) ... [2019-10-22 11:23:43,621 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 11:23:43,623 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 11:23:43,623 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 11:23:43,623 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 11:23:43,635 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:23:43" (1/1) ... [2019-10-22 11:23:43,635 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:23:43" (1/1) ... [2019-10-22 11:23:43,637 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:23:43" (1/1) ... [2019-10-22 11:23:43,639 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:23:43" (1/1) ... [2019-10-22 11:23:43,647 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:23:43" (1/1) ... [2019-10-22 11:23:43,656 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:23:43" (1/1) ... [2019-10-22 11:23:43,657 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:23:43" (1/1) ... [2019-10-22 11:23:43,659 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 11:23:43,666 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 11:23:43,666 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 11:23:43,666 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 11:23:43,667 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:23:43" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_29ff61d7-aafc-42c7-a30a-5cfea195a250/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 11:23:43,738 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-22 11:23:43,739 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2019-10-22 11:23:43,739 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-22 11:23:43,741 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2019-10-22 11:23:43,741 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 11:23:43,741 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 11:23:43,742 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-22 11:23:43,742 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-22 11:23:43,992 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 11:23:43,993 INFO L284 CfgBuilder]: Removed 9 assume(true) statements. [2019-10-22 11:23:43,994 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:23:43 BoogieIcfgContainer [2019-10-22 11:23:43,994 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 11:23:43,995 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-22 11:23:43,995 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-22 11:23:44,007 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-22 11:23:44,007 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 11:23:43" (1/3) ... [2019-10-22 11:23:44,008 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@751b0ae3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:23:44, skipping insertion in model container [2019-10-22 11:23:44,008 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:23:43" (2/3) ... [2019-10-22 11:23:44,009 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@751b0ae3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:23:44, skipping insertion in model container [2019-10-22 11:23:44,009 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:23:43" (3/3) ... [2019-10-22 11:23:44,010 INFO L109 eAbstractionObserver]: Analyzing ICFG inv_Newton-1.c [2019-10-22 11:23:44,023 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-22 11:23:44,030 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-22 11:23:44,041 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-22 11:23:44,063 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-22 11:23:44,063 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-22 11:23:44,064 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-22 11:23:44,064 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 11:23:44,064 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 11:23:44,064 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-22 11:23:44,064 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 11:23:44,064 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-22 11:23:44,078 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states. [2019-10-22 11:23:44,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-10-22 11:23:44,083 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:23:44,084 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:23:44,086 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:23:44,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:23:44,092 INFO L82 PathProgramCache]: Analyzing trace with hash 1808844170, now seen corresponding path program 1 times [2019-10-22 11:23:44,100 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:23:44,101 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543246081] [2019-10-22 11:23:44,101 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:23:44,101 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:23:44,101 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:23:44,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:23:44,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:23:44,278 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543246081] [2019-10-22 11:23:44,279 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:23:44,280 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-22 11:23:44,280 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247922831] [2019-10-22 11:23:44,283 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 11:23:44,285 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:23:44,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 11:23:44,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 11:23:44,298 INFO L87 Difference]: Start difference. First operand 12 states. Second operand 3 states. [2019-10-22 11:23:44,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:23:44,324 INFO L93 Difference]: Finished difference Result 22 states and 26 transitions. [2019-10-22 11:23:44,325 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 11:23:44,326 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2019-10-22 11:23:44,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:23:44,334 INFO L225 Difference]: With dead ends: 22 [2019-10-22 11:23:44,334 INFO L226 Difference]: Without dead ends: 9 [2019-10-22 11:23:44,338 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 11:23:44,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2019-10-22 11:23:44,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2019-10-22 11:23:44,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2019-10-22 11:23:44,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2019-10-22 11:23:44,367 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 7 [2019-10-22 11:23:44,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:23:44,368 INFO L462 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2019-10-22 11:23:44,368 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 11:23:44,368 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2019-10-22 11:23:44,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-10-22 11:23:44,368 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:23:44,368 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:23:44,369 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:23:44,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:23:44,369 INFO L82 PathProgramCache]: Analyzing trace with hash 291249093, now seen corresponding path program 1 times [2019-10-22 11:23:44,369 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:23:44,369 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112947299] [2019-10-22 11:23:44,370 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:23:44,370 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:23:44,370 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:23:44,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 11:23:44,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 11:23:44,504 INFO L168 tionRefinementEngine]: Strategy TAIPAN found a feasible trace [2019-10-22 11:23:44,505 INFO L445 BasicCegarLoop]: Counterexample might be feasible [2019-10-22 11:23:44,543 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 11:23:44 BoogieIcfgContainer [2019-10-22 11:23:44,545 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-22 11:23:44,546 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-10-22 11:23:44,546 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-10-22 11:23:44,546 INFO L275 PluginConnector]: Witness Printer initialized [2019-10-22 11:23:44,547 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:23:43" (3/4) ... [2019-10-22 11:23:44,551 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-10-22 11:23:44,552 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-10-22 11:23:44,554 INFO L168 Benchmark]: Toolchain (without parser) took 1285.20 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 156.8 MB). Free memory was 944.5 MB in the beginning and 1.1 GB in the end (delta: -147.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 11.5 GB. [2019-10-22 11:23:44,555 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 967.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 11:23:44,555 INFO L168 Benchmark]: CACSL2BoogieTranslator took 306.60 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 156.8 MB). Free memory was 944.5 MB in the beginning and 1.1 GB in the end (delta: -203.6 MB). Peak memory consumption was 23.2 MB. Max. memory is 11.5 GB. [2019-10-22 11:23:44,556 INFO L168 Benchmark]: Boogie Procedure Inliner took 46.20 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. [2019-10-22 11:23:44,556 INFO L168 Benchmark]: Boogie Preprocessor took 36.90 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. [2019-10-22 11:23:44,557 INFO L168 Benchmark]: RCFGBuilder took 327.92 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: 22.9 MB). Peak memory consumption was 22.9 MB. Max. memory is 11.5 GB. [2019-10-22 11:23:44,557 INFO L168 Benchmark]: TraceAbstraction took 550.68 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: 33.3 MB). Peak memory consumption was 33.3 MB. Max. memory is 11.5 GB. [2019-10-22 11:23:44,557 INFO L168 Benchmark]: Witness Printer took 6.11 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. [2019-10-22 11:23:44,561 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 967.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 306.60 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 156.8 MB). Free memory was 944.5 MB in the beginning and 1.1 GB in the end (delta: -203.6 MB). Peak memory consumption was 23.2 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 46.20 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. * Boogie Preprocessor took 36.90 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 327.92 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: 22.9 MB). Peak memory consumption was 22.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 550.68 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: 33.3 MB). Peak memory consumption was 33.3 MB. Max. memory is 11.5 GB. * Witness Printer took 6.11 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: 11]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseAnd at line 25, overapproximation of someBinaryArithmeticDOUBLEoperation at line 31, overapproximation of someBinaryDOUBLEComparisonOperation at line 48, overapproximation of to_real at line 26. Possible FailurePath: [L41] double a,r; [L43] a = __VERIFIER_nondet_double() [L21] double xi, xsi, temp; [L22] signed int cond, exp; [L23] union double_int A_u, xi_u; [L24] A_u.d = A [L25] EXPR A_u.i [L25] exp = (signed int) ((A_u.i & 0x7FF0000000000000) >> 52) - 1023 [L26] xi_u.d = 1 [L27] xi_u.i = (((long long)(1023-exp)) << 52) [L28] EXPR xi_u.d [L28] xi = xi_u.d [L29] cond = 1 [L30] COND TRUE \read(cond) [L31] xsi = 2*xi-A*xi*xi [L32] temp = xsi-xi [L33] cond = ((temp > 1e-10) || (temp < -1e-10)) [L34] xi = xsi [L30] COND FALSE !(\read(cond)) [L36] return xi; [L36] return xi; [L36] return xi; [L46] r = inv(a) [L11] COND TRUE !(cond) [L11] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 12 locations, 1 error locations. Result: UNSAFE, OverallTime: 0.4s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 11 SDtfs, 0 SDslu, 9 SDs, 0 SdLazy, 3 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=12occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 15 NumberOfCodeBlocks, 15 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 48 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: 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 0.1.24-cad4683 [2019-10-22 11:23:46,491 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 11:23:46,493 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 11:23:46,502 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 11:23:46,502 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 11:23:46,503 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 11:23:46,504 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 11:23:46,505 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 11:23:46,507 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 11:23:46,507 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 11:23:46,508 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 11:23:46,509 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 11:23:46,509 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 11:23:46,510 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 11:23:46,511 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 11:23:46,511 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 11:23:46,512 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 11:23:46,513 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 11:23:46,514 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 11:23:46,516 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 11:23:46,517 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 11:23:46,518 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 11:23:46,518 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 11:23:46,519 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 11:23:46,527 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 11:23:46,528 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 11:23:46,528 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 11:23:46,529 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 11:23:46,529 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 11:23:46,530 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 11:23:46,530 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 11:23:46,530 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 11:23:46,531 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 11:23:46,532 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 11:23:46,536 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 11:23:46,536 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 11:23:46,537 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 11:23:46,537 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 11:23:46,537 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 11:23:46,538 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 11:23:46,538 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 11:23:46,539 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_29ff61d7-aafc-42c7-a30a-5cfea195a250/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2019-10-22 11:23:46,550 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 11:23:46,550 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 11:23:46,551 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-10-22 11:23:46,551 INFO L138 SettingsManager]: * User list type=DISABLED [2019-10-22 11:23:46,551 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-10-22 11:23:46,552 INFO L138 SettingsManager]: * Explicit value domain=true [2019-10-22 11:23:46,552 INFO L138 SettingsManager]: * Octagon Domain=false [2019-10-22 11:23:46,552 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-10-22 11:23:46,552 INFO L138 SettingsManager]: * Interval Domain=false [2019-10-22 11:23:46,553 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 11:23:46,553 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-22 11:23:46,553 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-22 11:23:46,553 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 11:23:46,553 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-22 11:23:46,554 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 11:23:46,554 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-22 11:23:46,554 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-10-22 11:23:46,554 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-10-22 11:23:46,554 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-22 11:23:46,554 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 11:23:46,555 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-22 11:23:46,555 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-22 11:23:46,555 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 11:23:46,555 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 11:23:46,555 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 11:23:46,555 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-22 11:23:46,556 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 11:23:46,556 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 11:23:46,556 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 11:23:46,556 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-22 11:23:46,557 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2019-10-22 11:23:46,557 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-10-22 11:23:46,557 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-22 11:23:46,557 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-22 11:23:46,557 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_29ff61d7-aafc-42c7-a30a-5cfea195a250/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 94c7e44bedb585ab09170efda1a99dc421396ccb [2019-10-22 11:23:46,586 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 11:23:46,598 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 11:23:46,601 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 11:23:46,602 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 11:23:46,602 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 11:23:46,603 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_29ff61d7-aafc-42c7-a30a-5cfea195a250/bin/utaipan/../../sv-benchmarks/c/float-benchs/inv_Newton-1.c [2019-10-22 11:23:46,656 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_29ff61d7-aafc-42c7-a30a-5cfea195a250/bin/utaipan/data/066bef086/ae669602040444b3827ae23aebbd345e/FLAG14d150e47 [2019-10-22 11:23:47,036 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 11:23:47,036 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_29ff61d7-aafc-42c7-a30a-5cfea195a250/sv-benchmarks/c/float-benchs/inv_Newton-1.c [2019-10-22 11:23:47,041 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_29ff61d7-aafc-42c7-a30a-5cfea195a250/bin/utaipan/data/066bef086/ae669602040444b3827ae23aebbd345e/FLAG14d150e47 [2019-10-22 11:23:47,052 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_29ff61d7-aafc-42c7-a30a-5cfea195a250/bin/utaipan/data/066bef086/ae669602040444b3827ae23aebbd345e [2019-10-22 11:23:47,054 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 11:23:47,055 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 11:23:47,056 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 11:23:47,057 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 11:23:47,060 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 11:23:47,060 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:23:47" (1/1) ... [2019-10-22 11:23:47,063 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53421e8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:23:47, skipping insertion in model container [2019-10-22 11:23:47,063 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:23:47" (1/1) ... [2019-10-22 11:23:47,069 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 11:23:47,085 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 11:23:47,215 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:23:47,220 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 11:23:47,245 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:23:47,277 INFO L192 MainTranslator]: Completed translation [2019-10-22 11:23:47,277 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:23:47 WrapperNode [2019-10-22 11:23:47,277 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 11:23:47,278 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 11:23:47,278 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 11:23:47,278 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 11:23:47,285 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:23:47" (1/1) ... [2019-10-22 11:23:47,293 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:23:47" (1/1) ... [2019-10-22 11:23:47,367 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 11:23:47,367 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 11:23:47,367 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 11:23:47,368 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 11:23:47,376 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:23:47" (1/1) ... [2019-10-22 11:23:47,376 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:23:47" (1/1) ... [2019-10-22 11:23:47,379 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:23:47" (1/1) ... [2019-10-22 11:23:47,379 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:23:47" (1/1) ... [2019-10-22 11:23:47,387 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:23:47" (1/1) ... [2019-10-22 11:23:47,391 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:23:47" (1/1) ... [2019-10-22 11:23:47,393 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:23:47" (1/1) ... [2019-10-22 11:23:47,395 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 11:23:47,395 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 11:23:47,396 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 11:23:47,396 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 11:23:47,396 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:23:47" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_29ff61d7-aafc-42c7-a30a-5cfea195a250/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 11:23:47,447 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2019-10-22 11:23:47,447 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2019-10-22 11:23:47,447 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-22 11:23:47,447 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2019-10-22 11:23:47,447 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 11:23:47,448 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 11:23:47,448 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2019-10-22 11:23:47,448 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-22 11:23:49,712 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 11:23:49,712 INFO L284 CfgBuilder]: Removed 9 assume(true) statements. [2019-10-22 11:23:49,713 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:23:49 BoogieIcfgContainer [2019-10-22 11:23:49,714 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 11:23:49,715 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-22 11:23:49,715 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-22 11:23:49,717 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-22 11:23:49,717 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 11:23:47" (1/3) ... [2019-10-22 11:23:49,718 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d2b3a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:23:49, skipping insertion in model container [2019-10-22 11:23:49,718 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:23:47" (2/3) ... [2019-10-22 11:23:49,719 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d2b3a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:23:49, skipping insertion in model container [2019-10-22 11:23:49,719 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:23:49" (3/3) ... [2019-10-22 11:23:49,721 INFO L109 eAbstractionObserver]: Analyzing ICFG inv_Newton-1.c [2019-10-22 11:23:49,729 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-22 11:23:49,735 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-22 11:23:49,743 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-22 11:23:49,763 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-22 11:23:49,763 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-22 11:23:49,763 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-22 11:23:49,763 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 11:23:49,764 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 11:23:49,765 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-22 11:23:49,765 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 11:23:49,765 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-22 11:23:49,774 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states. [2019-10-22 11:23:49,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-10-22 11:23:49,778 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:23:49,779 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:23:49,781 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:23:49,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:23:49,785 INFO L82 PathProgramCache]: Analyzing trace with hash 1808844170, now seen corresponding path program 1 times [2019-10-22 11:23:49,792 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:23:49,792 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1409656710] [2019-10-22 11:23:49,793 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_29ff61d7-aafc-42c7-a30a-5cfea195a250/bin/utaipan/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2019-10-22 11:23:49,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:23:49,870 INFO L256 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 1 conjunts are in the unsatisfiable core [2019-10-22 11:23:49,874 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:23:49,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:23:49,897 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:23:49,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:23:49,908 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1409656710] [2019-10-22 11:23:49,909 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:23:49,909 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-10-22 11:23:49,909 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97931526] [2019-10-22 11:23:49,916 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-22 11:23:49,917 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-10-22 11:23:49,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-22 11:23:49,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-22 11:23:49,931 INFO L87 Difference]: Start difference. First operand 12 states. Second operand 2 states. [2019-10-22 11:23:49,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:23:49,949 INFO L93 Difference]: Finished difference Result 12 states and 14 transitions. [2019-10-22 11:23:49,949 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-22 11:23:49,951 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 7 [2019-10-22 11:23:49,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:23:49,958 INFO L225 Difference]: With dead ends: 12 [2019-10-22 11:23:49,959 INFO L226 Difference]: Without dead ends: 0 [2019-10-22 11:23:49,962 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-22 11:23:49,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-22 11:23:49,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-22 11:23:49,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-22 11:23:49,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-22 11:23:49,986 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 7 [2019-10-22 11:23:49,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:23:49,986 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-22 11:23:49,986 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-22 11:23:49,986 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-22 11:23:49,986 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-22 11:23:50,187 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2019-10-22 11:23:50,190 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-10-22 11:23:50,228 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-10-22 11:23:50,228 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 11) no Hoare annotation was computed. [2019-10-22 11:23:50,228 INFO L443 ceAbstractionStarter]: For program point L11(line 11) no Hoare annotation was computed. [2019-10-22 11:23:50,228 INFO L443 ceAbstractionStarter]: For program point L11-1(line 11) no Hoare annotation was computed. [2019-10-22 11:23:50,229 INFO L439 ceAbstractionStarter]: At program point L11-3(line 11) the Hoare annotation is: false [2019-10-22 11:23:50,229 INFO L439 ceAbstractionStarter]: At program point L36(lines 19 37) the Hoare annotation is: false [2019-10-22 11:23:50,229 INFO L443 ceAbstractionStarter]: For program point L-1(line -1) no Hoare annotation was computed. [2019-10-22 11:23:50,229 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-10-22 11:23:50,229 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-10-22 11:23:50,229 INFO L439 ceAbstractionStarter]: At program point L30-2(lines 30 35) the Hoare annotation is: false [2019-10-22 11:23:50,229 INFO L443 ceAbstractionStarter]: For program point L30-3(lines 30 35) no Hoare annotation was computed. [2019-10-22 11:23:50,230 INFO L439 ceAbstractionStarter]: At program point L49(lines 39 50) the Hoare annotation is: false [2019-10-22 11:23:50,235 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 11:23:50 BoogieIcfgContainer [2019-10-22 11:23:50,235 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-22 11:23:50,235 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-10-22 11:23:50,236 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-10-22 11:23:50,236 INFO L275 PluginConnector]: Witness Printer initialized [2019-10-22 11:23:50,236 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:23:49" (3/4) ... [2019-10-22 11:23:50,240 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-10-22 11:23:50,249 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2019-10-22 11:23:50,249 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2019-10-22 11:23:50,249 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-10-22 11:23:50,289 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_29ff61d7-aafc-42c7-a30a-5cfea195a250/bin/utaipan/witness.graphml [2019-10-22 11:23:50,289 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-10-22 11:23:50,291 INFO L168 Benchmark]: Toolchain (without parser) took 3235.12 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 161.5 MB). Free memory was 952.3 MB in the beginning and 1.1 GB in the end (delta: -144.8 MB). Peak memory consumption was 16.6 MB. Max. memory is 11.5 GB. [2019-10-22 11:23:50,291 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 977.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 11:23:50,292 INFO L168 Benchmark]: CACSL2BoogieTranslator took 221.13 ms. Allocated memory is still 1.0 GB. Free memory was 952.3 MB in the beginning and 941.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-10-22 11:23:50,292 INFO L168 Benchmark]: Boogie Procedure Inliner took 89.24 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 161.5 MB). Free memory was 941.6 MB in the beginning and 1.2 GB in the end (delta: -215.3 MB). Peak memory consumption was 18.4 MB. Max. memory is 11.5 GB. [2019-10-22 11:23:50,293 INFO L168 Benchmark]: Boogie Preprocessor took 27.93 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. [2019-10-22 11:23:50,293 INFO L168 Benchmark]: RCFGBuilder took 2318.26 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 20.1 MB). Peak memory consumption was 20.1 MB. Max. memory is 11.5 GB. [2019-10-22 11:23:50,293 INFO L168 Benchmark]: TraceAbstraction took 520.54 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: 26.4 MB). Peak memory consumption was 26.4 MB. Max. memory is 11.5 GB. [2019-10-22 11:23:50,294 INFO L168 Benchmark]: Witness Printer took 53.73 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: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. [2019-10-22 11:23:50,296 INFO L335 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 977.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 221.13 ms. Allocated memory is still 1.0 GB. Free memory was 952.3 MB in the beginning and 941.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 89.24 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 161.5 MB). Free memory was 941.6 MB in the beginning and 1.2 GB in the end (delta: -215.3 MB). Peak memory consumption was 18.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 27.93 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. * RCFGBuilder took 2318.26 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 20.1 MB). Peak memory consumption was 20.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 520.54 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: 26.4 MB). Peak memory consumption was 26.4 MB. Max. memory is 11.5 GB. * Witness Printer took 53.73 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: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 11]: 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: 39]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 30]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 12 locations, 1 error locations. Result: SAFE, OverallTime: 0.4s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 1 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=12occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 4 NumberOfFragments, 4 HoareAnnotationTreeSize, 4 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 7 NumberOfCodeBlocks, 7 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 12 ConstructedInterpolants, 0 QuantifiedInterpolants, 72 SizeOfPredicates, 0 NumberOfNonLiveVariables, 14 ConjunctsInSsa, 1 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...