./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-floats-scientific-comp/loop2-1.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_d5fdbef5-33ac-44e9-ba17-ac7b04dabaaf/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_d5fdbef5-33ac-44e9-ba17-ac7b04dabaaf/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_d5fdbef5-33ac-44e9-ba17-ac7b04dabaaf/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_d5fdbef5-33ac-44e9-ba17-ac7b04dabaaf/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-floats-scientific-comp/loop2-1.c -s /tmp/vcloud-vcloud-master/worker/working_dir_d5fdbef5-33ac-44e9-ba17-ac7b04dabaaf/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_d5fdbef5-33ac-44e9-ba17-ac7b04dabaaf/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 46b366fd2d10429563cb722af2c8528eb816bb82 ............................................................................................................................................................................................................................................................................................... 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_d5fdbef5-33ac-44e9-ba17-ac7b04dabaaf/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_d5fdbef5-33ac-44e9-ba17-ac7b04dabaaf/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_d5fdbef5-33ac-44e9-ba17-ac7b04dabaaf/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_d5fdbef5-33ac-44e9-ba17-ac7b04dabaaf/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-floats-scientific-comp/loop2-1.c -s /tmp/vcloud-vcloud-master/worker/working_dir_d5fdbef5-33ac-44e9-ba17-ac7b04dabaaf/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_d5fdbef5-33ac-44e9-ba17-ac7b04dabaaf/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 46b366fd2d10429563cb722af2c8528eb816bb82 ...................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.1.24-cad4683 [2019-10-22 11:26:18,977 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 11:26:18,980 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 11:26:18,990 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 11:26:18,991 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 11:26:18,991 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 11:26:18,992 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 11:26:18,994 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 11:26:18,995 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 11:26:18,996 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 11:26:18,997 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 11:26:18,998 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 11:26:18,998 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 11:26:18,999 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 11:26:19,000 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 11:26:19,000 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 11:26:19,001 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 11:26:19,002 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 11:26:19,003 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 11:26:19,004 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 11:26:19,006 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 11:26:19,007 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 11:26:19,008 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 11:26:19,008 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 11:26:19,010 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 11:26:19,010 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 11:26:19,010 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 11:26:19,011 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 11:26:19,012 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 11:26:19,012 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 11:26:19,013 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 11:26:19,013 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 11:26:19,014 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 11:26:19,014 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 11:26:19,015 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 11:26:19,015 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 11:26:19,016 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 11:26:19,016 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 11:26:19,016 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 11:26:19,017 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 11:26:19,017 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 11:26:19,018 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_d5fdbef5-33ac-44e9-ba17-ac7b04dabaaf/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2019-10-22 11:26:19,028 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 11:26:19,028 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 11:26:19,029 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-10-22 11:26:19,029 INFO L138 SettingsManager]: * User list type=DISABLED [2019-10-22 11:26:19,029 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-10-22 11:26:19,030 INFO L138 SettingsManager]: * Explicit value domain=true [2019-10-22 11:26:19,030 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-10-22 11:26:19,030 INFO L138 SettingsManager]: * Octagon Domain=false [2019-10-22 11:26:19,030 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-10-22 11:26:19,030 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-10-22 11:26:19,030 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-10-22 11:26:19,030 INFO L138 SettingsManager]: * Interval Domain=false [2019-10-22 11:26:19,031 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 11:26:19,031 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-22 11:26:19,031 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-22 11:26:19,031 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-22 11:26:19,032 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 11:26:19,032 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-22 11:26:19,032 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 11:26:19,032 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-22 11:26:19,032 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-22 11:26:19,032 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 11:26:19,033 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-22 11:26:19,033 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 11:26:19,033 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 11:26:19,033 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 11:26:19,033 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-22 11:26:19,033 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 11:26:19,034 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 11:26:19,034 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 11:26:19,034 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-22 11:26:19,034 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-10-22 11:26:19,034 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-22 11:26:19,034 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-22 11:26:19,035 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-22 11:26:19,035 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_d5fdbef5-33ac-44e9-ba17-ac7b04dabaaf/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 -> 46b366fd2d10429563cb722af2c8528eb816bb82 [2019-10-22 11:26:19,058 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 11:26:19,068 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 11:26:19,072 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 11:26:19,074 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 11:26:19,075 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 11:26:19,075 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_d5fdbef5-33ac-44e9-ba17-ac7b04dabaaf/bin/utaipan/../../sv-benchmarks/c/loop-floats-scientific-comp/loop2-1.c [2019-10-22 11:26:19,126 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_d5fdbef5-33ac-44e9-ba17-ac7b04dabaaf/bin/utaipan/data/4d106609e/9e06103949e043c4a506e37ea6fcb130/FLAGd2c541395 [2019-10-22 11:26:19,507 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 11:26:19,509 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_d5fdbef5-33ac-44e9-ba17-ac7b04dabaaf/sv-benchmarks/c/loop-floats-scientific-comp/loop2-1.c [2019-10-22 11:26:19,515 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_d5fdbef5-33ac-44e9-ba17-ac7b04dabaaf/bin/utaipan/data/4d106609e/9e06103949e043c4a506e37ea6fcb130/FLAGd2c541395 [2019-10-22 11:26:19,910 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_d5fdbef5-33ac-44e9-ba17-ac7b04dabaaf/bin/utaipan/data/4d106609e/9e06103949e043c4a506e37ea6fcb130 [2019-10-22 11:26:19,913 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 11:26:19,914 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 11:26:19,916 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 11:26:19,917 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 11:26:19,920 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 11:26:19,920 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:26:19" (1/1) ... [2019-10-22 11:26:19,925 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@235cd7b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:19, skipping insertion in model container [2019-10-22 11:26:19,925 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:26:19" (1/1) ... [2019-10-22 11:26:19,932 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 11:26:19,948 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 11:26:20,123 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:26:20,127 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 11:26:20,198 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:26:20,209 INFO L192 MainTranslator]: Completed translation [2019-10-22 11:26:20,209 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:20 WrapperNode [2019-10-22 11:26:20,209 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 11:26:20,210 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 11:26:20,210 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 11:26:20,210 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 11:26:20,217 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:20" (1/1) ... [2019-10-22 11:26:20,222 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:20" (1/1) ... [2019-10-22 11:26:20,242 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 11:26:20,244 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 11:26:20,244 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 11:26:20,244 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 11:26:20,252 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:20" (1/1) ... [2019-10-22 11:26:20,252 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:20" (1/1) ... [2019-10-22 11:26:20,253 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:20" (1/1) ... [2019-10-22 11:26:20,254 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:20" (1/1) ... [2019-10-22 11:26:20,257 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:20" (1/1) ... [2019-10-22 11:26:20,262 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:20" (1/1) ... [2019-10-22 11:26:20,265 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:20" (1/1) ... [2019-10-22 11:26:20,271 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 11:26:20,272 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 11:26:20,276 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 11:26:20,276 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 11:26:20,277 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:20" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d5fdbef5-33ac-44e9-ba17-ac7b04dabaaf/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 11:26:20,333 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 11:26:20,333 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 11:26:20,502 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 11:26:20,503 INFO L284 CfgBuilder]: Removed 7 assume(true) statements. [2019-10-22 11:26:20,504 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:26:20 BoogieIcfgContainer [2019-10-22 11:26:20,504 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 11:26:20,505 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-22 11:26:20,505 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-22 11:26:20,519 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-22 11:26:20,519 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 11:26:19" (1/3) ... [2019-10-22 11:26:20,520 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@626ccf19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:26:20, skipping insertion in model container [2019-10-22 11:26:20,520 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:20" (2/3) ... [2019-10-22 11:26:20,521 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@626ccf19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:26:20, skipping insertion in model container [2019-10-22 11:26:20,521 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:26:20" (3/3) ... [2019-10-22 11:26:20,522 INFO L109 eAbstractionObserver]: Analyzing ICFG loop2-1.c [2019-10-22 11:26:20,539 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-22 11:26:20,545 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-22 11:26:20,557 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-22 11:26:20,579 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-22 11:26:20,580 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-22 11:26:20,580 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-22 11:26:20,580 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 11:26:20,580 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 11:26:20,580 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-22 11:26:20,580 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 11:26:20,580 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-22 11:26:20,592 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states. [2019-10-22 11:26:20,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-10-22 11:26:20,602 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:26:20,603 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-10-22 11:26:20,605 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:26:20,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:26:20,612 INFO L82 PathProgramCache]: Analyzing trace with hash 890122407, now seen corresponding path program 1 times [2019-10-22 11:26:20,618 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:26:20,618 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001897206] [2019-10-22 11:26:20,619 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:26:20,619 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:26:20,619 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:26:20,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:26:20,702 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 11:26:20,702 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001897206] [2019-10-22 11:26:20,703 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:26:20,703 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-22 11:26:20,703 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367378863] [2019-10-22 11:26:20,706 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-22 11:26:20,708 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:26:20,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-22 11:26:20,717 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-22 11:26:20,718 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 2 states. [2019-10-22 11:26:20,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:26:20,730 INFO L93 Difference]: Finished difference Result 22 states and 26 transitions. [2019-10-22 11:26:20,730 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-22 11:26:20,731 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 6 [2019-10-22 11:26:20,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:26:20,738 INFO L225 Difference]: With dead ends: 22 [2019-10-22 11:26:20,738 INFO L226 Difference]: Without dead ends: 10 [2019-10-22 11:26:20,740 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-22 11:26:20,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2019-10-22 11:26:20,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2019-10-22 11:26:20,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2019-10-22 11:26:20,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 11 transitions. [2019-10-22 11:26:20,762 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 11 transitions. Word has length 6 [2019-10-22 11:26:20,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:26:20,763 INFO L462 AbstractCegarLoop]: Abstraction has 10 states and 11 transitions. [2019-10-22 11:26:20,763 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-22 11:26:20,763 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 11 transitions. [2019-10-22 11:26:20,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-10-22 11:26:20,763 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:26:20,763 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:26:20,764 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:26:20,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:26:20,764 INFO L82 PathProgramCache]: Analyzing trace with hash 642088082, now seen corresponding path program 1 times [2019-10-22 11:26:20,764 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:26:20,765 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915347385] [2019-10-22 11:26:20,765 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:26:20,765 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:26:20,765 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:26:20,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 11:26:20,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 11:26:20,812 INFO L168 tionRefinementEngine]: Strategy TAIPAN found a feasible trace [2019-10-22 11:26:20,812 INFO L445 BasicCegarLoop]: Counterexample might be feasible [2019-10-22 11:26:20,831 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 11:26:20 BoogieIcfgContainer [2019-10-22 11:26:20,831 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-22 11:26:20,832 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-10-22 11:26:20,832 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-10-22 11:26:20,832 INFO L275 PluginConnector]: Witness Printer initialized [2019-10-22 11:26:20,832 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:26:20" (3/4) ... [2019-10-22 11:26:20,835 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-10-22 11:26:20,835 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-10-22 11:26:20,837 INFO L168 Benchmark]: Toolchain (without parser) took 922.37 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 134.7 MB). Free memory was 948.5 MB in the beginning and 1.1 GB in the end (delta: -141.1 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 11:26:20,837 INFO L168 Benchmark]: CDTParser took 0.31 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 11:26:20,838 INFO L168 Benchmark]: CACSL2BoogieTranslator took 292.90 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 134.7 MB). Free memory was 948.5 MB in the beginning and 1.1 GB in the end (delta: -182.3 MB). Peak memory consumption was 23.0 MB. Max. memory is 11.5 GB. [2019-10-22 11:26:20,838 INFO L168 Benchmark]: Boogie Procedure Inliner took 33.86 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 11:26:20,839 INFO L168 Benchmark]: Boogie Preprocessor took 28.32 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: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2019-10-22 11:26:20,840 INFO L168 Benchmark]: RCFGBuilder took 231.55 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: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 11.5 GB. [2019-10-22 11:26:20,840 INFO L168 Benchmark]: TraceAbstraction took 326.71 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: 21.5 MB). Peak memory consumption was 21.5 MB. Max. memory is 11.5 GB. [2019-10-22 11:26:20,840 INFO L168 Benchmark]: Witness Printer took 3.69 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 11:26:20,844 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 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 292.90 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 134.7 MB). Free memory was 948.5 MB in the beginning and 1.1 GB in the end (delta: -182.3 MB). Peak memory consumption was 23.0 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 33.86 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 28.32 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: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 231.55 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: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 326.71 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: 21.5 MB). Peak memory consumption was 21.5 MB. Max. memory is 11.5 GB. * Witness Printer took 3.69 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: 7]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 44, overapproximation of someBinaryArithmeticFLOAToperation at line 30. Possible FailurePath: [L9] float pi = 3.14159 ; VAL [pi=314159/100000] [L15] float x = __VERIFIER_nondet_float() ; [L16] float octant = pi/3 ; [L18] float oddExp = x ; [L19] float evenExp = 1.0 ; [L20] float term = x ; [L21] unsigned int count = 2 ; [L22] int multFactor = 0 ; [L23] int temp ; VAL [pi=314159/100000] [L25] COND TRUE 1 [L27] term = term * (x/count) VAL [pi=314159/100000] [L28] EXPR (count>>1 % 2 == 0) ? 1 : -1 VAL [pi=314159/100000] [L28] multFactor = (count>>1 % 2 == 0) ? 1 : -1 [L30] evenExp = evenExp + multFactor*term [L32] count++ [L34] term = term * (x/count) [L36] oddExp = oddExp + multFactor*term [L38] count++ [L40] temp = __VERIFIER_nondet_int() [L41] COND TRUE temp == 0 VAL [pi=314159/100000] [L7] COND TRUE !(cond) VAL [pi=314159/100000] [L7] __VERIFIER_error() VAL [pi=314159/100000] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 14 locations, 1 error locations. Result: UNSAFE, OverallTime: 0.2s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 15 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=14occurred 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, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 15 NumberOfCodeBlocks, 15 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 5 ConstructedInterpolants, 0 QuantifiedInterpolants, 25 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 11:26:22,756 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 11:26:22,759 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 11:26:22,773 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 11:26:22,773 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 11:26:22,774 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 11:26:22,775 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 11:26:22,777 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 11:26:22,779 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 11:26:22,787 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 11:26:22,788 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 11:26:22,788 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 11:26:22,789 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 11:26:22,789 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 11:26:22,790 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 11:26:22,792 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 11:26:22,794 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 11:26:22,795 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 11:26:22,796 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 11:26:22,797 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 11:26:22,797 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 11:26:22,798 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 11:26:22,798 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 11:26:22,799 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 11:26:22,800 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 11:26:22,801 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 11:26:22,801 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 11:26:22,801 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 11:26:22,802 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 11:26:22,802 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 11:26:22,803 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 11:26:22,803 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 11:26:22,804 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 11:26:22,804 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 11:26:22,805 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 11:26:22,805 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 11:26:22,805 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 11:26:22,806 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 11:26:22,806 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 11:26:22,806 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 11:26:22,807 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 11:26:22,808 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_d5fdbef5-33ac-44e9-ba17-ac7b04dabaaf/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2019-10-22 11:26:22,819 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 11:26:22,819 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 11:26:22,820 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-10-22 11:26:22,820 INFO L138 SettingsManager]: * User list type=DISABLED [2019-10-22 11:26:22,820 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-10-22 11:26:22,820 INFO L138 SettingsManager]: * Explicit value domain=true [2019-10-22 11:26:22,820 INFO L138 SettingsManager]: * Octagon Domain=false [2019-10-22 11:26:22,820 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-10-22 11:26:22,821 INFO L138 SettingsManager]: * Interval Domain=false [2019-10-22 11:26:22,821 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 11:26:22,821 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-22 11:26:22,821 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-22 11:26:22,821 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 11:26:22,822 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-22 11:26:22,822 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 11:26:22,822 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-22 11:26:22,822 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-10-22 11:26:22,822 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-10-22 11:26:22,822 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-22 11:26:22,826 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 11:26:22,826 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-22 11:26:22,826 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-22 11:26:22,826 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 11:26:22,827 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 11:26:22,827 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 11:26:22,827 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-22 11:26:22,827 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 11:26:22,827 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 11:26:22,827 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 11:26:22,827 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-22 11:26:22,828 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2019-10-22 11:26:22,828 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-10-22 11:26:22,828 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-22 11:26:22,828 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-22 11:26:22,828 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_d5fdbef5-33ac-44e9-ba17-ac7b04dabaaf/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 -> 46b366fd2d10429563cb722af2c8528eb816bb82 [2019-10-22 11:26:22,864 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 11:26:22,875 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 11:26:22,877 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 11:26:22,879 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 11:26:22,879 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 11:26:22,880 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_d5fdbef5-33ac-44e9-ba17-ac7b04dabaaf/bin/utaipan/../../sv-benchmarks/c/loop-floats-scientific-comp/loop2-1.c [2019-10-22 11:26:22,926 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_d5fdbef5-33ac-44e9-ba17-ac7b04dabaaf/bin/utaipan/data/54a0a0bd0/af6e6247d56c4d02bf56c9015681cffc/FLAG2091ad22c [2019-10-22 11:26:23,281 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 11:26:23,281 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_d5fdbef5-33ac-44e9-ba17-ac7b04dabaaf/sv-benchmarks/c/loop-floats-scientific-comp/loop2-1.c [2019-10-22 11:26:23,286 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_d5fdbef5-33ac-44e9-ba17-ac7b04dabaaf/bin/utaipan/data/54a0a0bd0/af6e6247d56c4d02bf56c9015681cffc/FLAG2091ad22c [2019-10-22 11:26:23,298 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_d5fdbef5-33ac-44e9-ba17-ac7b04dabaaf/bin/utaipan/data/54a0a0bd0/af6e6247d56c4d02bf56c9015681cffc [2019-10-22 11:26:23,301 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 11:26:23,302 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 11:26:23,303 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 11:26:23,303 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 11:26:23,306 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 11:26:23,307 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:26:23" (1/1) ... [2019-10-22 11:26:23,309 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@567d12da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:23, skipping insertion in model container [2019-10-22 11:26:23,309 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:26:23" (1/1) ... [2019-10-22 11:26:23,315 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 11:26:23,332 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 11:26:23,502 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:26:23,508 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 11:26:23,528 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:26:23,543 INFO L192 MainTranslator]: Completed translation [2019-10-22 11:26:23,544 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:23 WrapperNode [2019-10-22 11:26:23,544 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 11:26:23,545 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 11:26:23,545 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 11:26:23,545 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 11:26:23,552 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:23" (1/1) ... [2019-10-22 11:26:23,561 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:23" (1/1) ... [2019-10-22 11:26:23,665 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 11:26:23,666 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 11:26:23,666 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 11:26:23,666 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 11:26:23,674 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:23" (1/1) ... [2019-10-22 11:26:23,674 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:23" (1/1) ... [2019-10-22 11:26:23,676 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:23" (1/1) ... [2019-10-22 11:26:23,676 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:23" (1/1) ... [2019-10-22 11:26:23,681 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:23" (1/1) ... [2019-10-22 11:26:23,689 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:23" (1/1) ... [2019-10-22 11:26:23,690 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:23" (1/1) ... [2019-10-22 11:26:23,692 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 11:26:23,693 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 11:26:23,693 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 11:26:23,693 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 11:26:23,694 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:23" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d5fdbef5-33ac-44e9-ba17-ac7b04dabaaf/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 11:26:23,747 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 11:26:23,748 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 11:26:28,009 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 11:26:28,010 INFO L284 CfgBuilder]: Removed 7 assume(true) statements. [2019-10-22 11:26:28,011 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:26:28 BoogieIcfgContainer [2019-10-22 11:26:28,011 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 11:26:28,012 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-22 11:26:28,012 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-22 11:26:28,015 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-22 11:26:28,015 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 11:26:23" (1/3) ... [2019-10-22 11:26:28,016 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63c1c4f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:26:28, skipping insertion in model container [2019-10-22 11:26:28,016 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:23" (2/3) ... [2019-10-22 11:26:28,016 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63c1c4f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:26:28, skipping insertion in model container [2019-10-22 11:26:28,017 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:26:28" (3/3) ... [2019-10-22 11:26:28,018 INFO L109 eAbstractionObserver]: Analyzing ICFG loop2-1.c [2019-10-22 11:26:28,026 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-22 11:26:28,033 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-22 11:26:28,043 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-22 11:26:28,060 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-22 11:26:28,060 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-22 11:26:28,060 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-22 11:26:28,060 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 11:26:28,062 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 11:26:28,062 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-22 11:26:28,062 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 11:26:28,062 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-22 11:26:28,080 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states. [2019-10-22 11:26:28,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-10-22 11:26:28,085 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:26:28,086 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-10-22 11:26:28,088 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:26:28,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:26:28,092 INFO L82 PathProgramCache]: Analyzing trace with hash 890122407, now seen corresponding path program 1 times [2019-10-22 11:26:28,098 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:26:28,099 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [342027452] [2019-10-22 11:26:28,099 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d5fdbef5-33ac-44e9-ba17-ac7b04dabaaf/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 11:26:28,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:26:28,248 INFO L256 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 1 conjunts are in the unsatisfiable core [2019-10-22 11:26:28,251 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:26:28,261 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 11:26:28,261 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:26:28,264 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 11:26:28,265 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [342027452] [2019-10-22 11:26:28,265 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:26:28,266 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-10-22 11:26:28,266 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329283302] [2019-10-22 11:26:28,269 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-22 11:26:28,269 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-10-22 11:26:28,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-22 11:26:28,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-22 11:26:28,280 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 2 states. [2019-10-22 11:26:28,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:26:28,295 INFO L93 Difference]: Finished difference Result 22 states and 26 transitions. [2019-10-22 11:26:28,295 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-22 11:26:28,296 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 6 [2019-10-22 11:26:28,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:26:28,304 INFO L225 Difference]: With dead ends: 22 [2019-10-22 11:26:28,304 INFO L226 Difference]: Without dead ends: 10 [2019-10-22 11:26:28,307 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 10 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 11:26:28,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2019-10-22 11:26:28,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2019-10-22 11:26:28,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2019-10-22 11:26:28,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 11 transitions. [2019-10-22 11:26:28,337 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 11 transitions. Word has length 6 [2019-10-22 11:26:28,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:26:28,338 INFO L462 AbstractCegarLoop]: Abstraction has 10 states and 11 transitions. [2019-10-22 11:26:28,338 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-22 11:26:28,338 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 11 transitions. [2019-10-22 11:26:28,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-10-22 11:26:28,338 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:26:28,338 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:26:28,540 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2019-10-22 11:26:28,540 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:26:28,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:26:28,541 INFO L82 PathProgramCache]: Analyzing trace with hash 642088082, now seen corresponding path program 1 times [2019-10-22 11:26:28,541 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:26:28,541 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1512175663] [2019-10-22 11:26:28,541 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d5fdbef5-33ac-44e9-ba17-ac7b04dabaaf/bin/utaipan/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2019-10-22 11:26:29,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 11:26:29,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 11:26:30,065 INFO L168 tionRefinementEngine]: Strategy WALRUS found a feasible trace [2019-10-22 11:26:30,065 INFO L445 BasicCegarLoop]: Counterexample might be feasible [2019-10-22 11:26:30,266 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2019-10-22 11:26:30,290 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 11:26:30 BoogieIcfgContainer [2019-10-22 11:26:30,290 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-22 11:26:30,290 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-10-22 11:26:30,290 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-10-22 11:26:30,291 INFO L275 PluginConnector]: Witness Printer initialized [2019-10-22 11:26:30,291 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:26:28" (3/4) ... [2019-10-22 11:26:30,293 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-10-22 11:26:30,329 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_d5fdbef5-33ac-44e9-ba17-ac7b04dabaaf/bin/utaipan/witness.graphml [2019-10-22 11:26:30,329 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-10-22 11:26:30,331 INFO L168 Benchmark]: Toolchain (without parser) took 7028.86 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 183.5 MB). Free memory was 945.6 MB in the beginning and 1.1 GB in the end (delta: -171.0 MB). Peak memory consumption was 12.5 MB. Max. memory is 11.5 GB. [2019-10-22 11:26:30,331 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 972.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 11:26:30,332 INFO L168 Benchmark]: CACSL2BoogieTranslator took 241.56 ms. Allocated memory is still 1.0 GB. Free memory was 945.6 MB in the beginning and 934.9 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-10-22 11:26:30,333 INFO L168 Benchmark]: Boogie Procedure Inliner took 121.21 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 183.5 MB). Free memory was 934.9 MB in the beginning and 1.2 GB in the end (delta: -243.8 MB). Peak memory consumption was 12.7 MB. Max. memory is 11.5 GB. [2019-10-22 11:26:30,333 INFO L168 Benchmark]: Boogie Preprocessor took 26.30 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: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. [2019-10-22 11:26:30,334 INFO L168 Benchmark]: RCFGBuilder took 4318.36 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: 18.1 MB). Peak memory consumption was 18.1 MB. Max. memory is 11.5 GB. [2019-10-22 11:26:30,334 INFO L168 Benchmark]: TraceAbstraction took 2278.27 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: 37.3 MB). Peak memory consumption was 37.3 MB. Max. memory is 11.5 GB. [2019-10-22 11:26:30,334 INFO L168 Benchmark]: Witness Printer took 38.90 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 11:26:30,337 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 972.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 241.56 ms. Allocated memory is still 1.0 GB. Free memory was 945.6 MB in the beginning and 934.9 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 121.21 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 183.5 MB). Free memory was 934.9 MB in the beginning and 1.2 GB in the end (delta: -243.8 MB). Peak memory consumption was 12.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 26.30 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: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. * RCFGBuilder took 4318.36 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: 18.1 MB). Peak memory consumption was 18.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 2278.27 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: 37.3 MB). Peak memory consumption was 37.3 MB. Max. memory is 11.5 GB. * Witness Printer took 38.90 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. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 7]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L9] float pi = 3.14159 ; VAL [pi=3.141590118408203] [L15] float x = __VERIFIER_nondet_float() ; [L16] float octant = pi/3 ; [L18] float oddExp = x ; [L19] float evenExp = 1.0 ; [L20] float term = x ; [L21] unsigned int count = 2 ; [L22] int multFactor = 0 ; [L23] int temp ; VAL [pi=3.141590118408203] [L25] COND TRUE 1 [L27] term = term * (x/count) VAL [pi=3.141590118408203] [L28] EXPR (count>>1 % 2 == 0) ? 1 : -1 VAL [pi=3.141590118408203] [L28] multFactor = (count>>1 % 2 == 0) ? 1 : -1 [L30] evenExp = evenExp + multFactor*term [L32] count++ [L34] term = term * (x/count) [L36] oddExp = oddExp + multFactor*term [L38] count++ [L40] temp = __VERIFIER_nondet_int() [L41] COND TRUE temp == 0 VAL [pi=3.141590118408203] [L7] COND TRUE !(cond) VAL [pi=3.141590118408203] [L7] __VERIFIER_error() VAL [pi=3.141590118408203] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 14 locations, 1 error locations. Result: UNSAFE, OverallTime: 2.2s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 15 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=14occurred 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, 0.7s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 15 NumberOfCodeBlocks, 15 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 50 SizeOfPredicates, 0 NumberOfNonLiveVariables, 16 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 incorrect! Received shutdown request...