./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 f470102c Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_d35ecb31-7489-446f-af87-a046c724be71/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_d35ecb31-7489-446f-af87-a046c724be71/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_d35ecb31-7489-446f-af87-a046c724be71/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_d35ecb31-7489-446f-af87-a046c724be71/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-floats-scientific-comp/loop2-1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_d35ecb31-7489-446f-af87-a046c724be71/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_d35ecb31-7489-446f-af87-a046c724be71/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/run_dir_d35ecb31-7489-446f-af87-a046c724be71/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_d35ecb31-7489-446f-af87-a046c724be71/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_d35ecb31-7489-446f-af87-a046c724be71/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_d35ecb31-7489-446f-af87-a046c724be71/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-floats-scientific-comp/loop2-1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_d35ecb31-7489-446f-af87-a046c724be71/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_d35ecb31-7489-446f-af87-a046c724be71/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 0.1.25-f470102 [2019-12-07 15:54:14,258 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 15:54:14,259 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 15:54:14,266 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 15:54:14,267 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 15:54:14,267 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 15:54:14,268 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 15:54:14,270 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 15:54:14,271 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 15:54:14,271 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 15:54:14,272 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 15:54:14,273 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 15:54:14,273 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 15:54:14,274 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 15:54:14,274 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 15:54:14,275 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 15:54:14,276 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 15:54:14,276 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 15:54:14,278 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 15:54:14,279 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 15:54:14,281 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 15:54:14,281 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 15:54:14,282 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 15:54:14,282 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 15:54:14,284 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 15:54:14,284 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 15:54:14,285 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 15:54:14,285 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 15:54:14,285 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 15:54:14,286 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 15:54:14,286 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 15:54:14,287 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 15:54:14,287 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 15:54:14,287 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 15:54:14,288 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 15:54:14,288 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 15:54:14,289 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 15:54:14,289 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 15:54:14,289 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 15:54:14,289 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 15:54:14,290 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 15:54:14,290 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_d35ecb31-7489-446f-af87-a046c724be71/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2019-12-07 15:54:14,301 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 15:54:14,301 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 15:54:14,301 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-12-07 15:54:14,301 INFO L138 SettingsManager]: * User list type=DISABLED [2019-12-07 15:54:14,302 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-12-07 15:54:14,302 INFO L138 SettingsManager]: * Explicit value domain=true [2019-12-07 15:54:14,302 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-12-07 15:54:14,302 INFO L138 SettingsManager]: * Octagon Domain=false [2019-12-07 15:54:14,302 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-12-07 15:54:14,302 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-12-07 15:54:14,302 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-12-07 15:54:14,303 INFO L138 SettingsManager]: * Interval Domain=false [2019-12-07 15:54:14,303 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-12-07 15:54:14,303 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-12-07 15:54:14,303 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-12-07 15:54:14,304 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 15:54:14,304 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 15:54:14,304 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 15:54:14,304 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 15:54:14,304 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 15:54:14,304 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 15:54:14,304 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 15:54:14,304 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 15:54:14,304 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-12-07 15:54:14,305 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 15:54:14,305 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 15:54:14,305 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 15:54:14,305 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 15:54:14,305 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 15:54:14,305 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 15:54:14,305 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 15:54:14,305 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 15:54:14,306 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 15:54:14,306 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 15:54:14,306 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 15:54:14,306 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-12-07 15:54:14,306 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-07 15:54:14,306 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 15:54:14,306 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 15:54:14,306 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-07 15:54:14,306 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/run_dir_d35ecb31-7489-446f-af87-a046c724be71/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 [2019-12-07 15:54:14,408 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 15:54:14,416 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 15:54:14,418 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 15:54:14,419 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 15:54:14,419 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 15:54:14,420 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_d35ecb31-7489-446f-af87-a046c724be71/bin/utaipan/../../sv-benchmarks/c/loop-floats-scientific-comp/loop2-1.c [2019-12-07 15:54:14,457 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_d35ecb31-7489-446f-af87-a046c724be71/bin/utaipan/data/30a42c26b/9a83504deeae4e70a2a4c813ee0a1473/FLAGc98b32a76 [2019-12-07 15:54:14,803 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 15:54:14,803 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_d35ecb31-7489-446f-af87-a046c724be71/sv-benchmarks/c/loop-floats-scientific-comp/loop2-1.c [2019-12-07 15:54:14,807 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_d35ecb31-7489-446f-af87-a046c724be71/bin/utaipan/data/30a42c26b/9a83504deeae4e70a2a4c813ee0a1473/FLAGc98b32a76 [2019-12-07 15:54:14,816 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_d35ecb31-7489-446f-af87-a046c724be71/bin/utaipan/data/30a42c26b/9a83504deeae4e70a2a4c813ee0a1473 [2019-12-07 15:54:14,817 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 15:54:14,818 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 15:54:14,819 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 15:54:14,819 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 15:54:14,821 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 15:54:14,822 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 03:54:14" (1/1) ... [2019-12-07 15:54:14,824 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19118894 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:54:14, skipping insertion in model container [2019-12-07 15:54:14,824 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 03:54:14" (1/1) ... [2019-12-07 15:54:14,828 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 15:54:14,840 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 15:54:14,991 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 15:54:14,995 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 15:54:15,012 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 15:54:15,022 INFO L208 MainTranslator]: Completed translation [2019-12-07 15:54:15,023 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:54:15 WrapperNode [2019-12-07 15:54:15,023 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 15:54:15,023 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 15:54:15,023 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 15:54:15,023 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 15:54:15,029 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:54:15" (1/1) ... [2019-12-07 15:54:15,033 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:54:15" (1/1) ... [2019-12-07 15:54:15,045 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 15:54:15,046 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 15:54:15,046 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 15:54:15,046 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 15:54:15,052 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:54:15" (1/1) ... [2019-12-07 15:54:15,052 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:54:15" (1/1) ... [2019-12-07 15:54:15,053 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:54:15" (1/1) ... [2019-12-07 15:54:15,053 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:54:15" (1/1) ... [2019-12-07 15:54:15,055 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:54:15" (1/1) ... [2019-12-07 15:54:15,058 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:54:15" (1/1) ... [2019-12-07 15:54:15,059 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:54:15" (1/1) ... [2019-12-07 15:54:15,060 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 15:54:15,060 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 15:54:15,060 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 15:54:15,060 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 15:54:15,061 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:54:15" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d35ecb31-7489-446f-af87-a046c724be71/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 [2019-12-07 15:54:15,100 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 15:54:15,100 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 15:54:15,234 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 15:54:15,234 INFO L287 CfgBuilder]: Removed 7 assume(true) statements. [2019-12-07 15:54:15,235 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 03:54:15 BoogieIcfgContainer [2019-12-07 15:54:15,235 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 15:54:15,236 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 15:54:15,236 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 15:54:15,238 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 15:54:15,238 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 03:54:14" (1/3) ... [2019-12-07 15:54:15,238 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f98ba04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 03:54:15, skipping insertion in model container [2019-12-07 15:54:15,238 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:54:15" (2/3) ... [2019-12-07 15:54:15,239 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f98ba04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 03:54:15, skipping insertion in model container [2019-12-07 15:54:15,239 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 03:54:15" (3/3) ... [2019-12-07 15:54:15,240 INFO L109 eAbstractionObserver]: Analyzing ICFG loop2-1.c [2019-12-07 15:54:15,246 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 15:54:15,251 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-07 15:54:15,258 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-12-07 15:54:15,273 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 15:54:15,273 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 15:54:15,273 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 15:54:15,273 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 15:54:15,273 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 15:54:15,273 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 15:54:15,273 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 15:54:15,273 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 15:54:15,282 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states. [2019-12-07 15:54:15,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-12-07 15:54:15,285 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 15:54:15,286 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-12-07 15:54:15,286 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 15:54:15,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:54:15,290 INFO L82 PathProgramCache]: Analyzing trace with hash 67920598, now seen corresponding path program 1 times [2019-12-07 15:54:15,296 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 15:54:15,296 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62026050] [2019-12-07 15:54:15,296 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:54:15,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:54:15,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:54:15,371 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62026050] [2019-12-07 15:54:15,371 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 15:54:15,371 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 15:54:15,372 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782102737] [2019-12-07 15:54:15,375 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-12-07 15:54:15,375 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 15:54:15,383 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-12-07 15:54:15,384 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-12-07 15:54:15,385 INFO L87 Difference]: Start difference. First operand 9 states. Second operand 2 states. [2019-12-07 15:54:15,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:54:15,395 INFO L93 Difference]: Finished difference Result 15 states and 17 transitions. [2019-12-07 15:54:15,395 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-12-07 15:54:15,396 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 5 [2019-12-07 15:54:15,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 15:54:15,401 INFO L225 Difference]: With dead ends: 15 [2019-12-07 15:54:15,402 INFO L226 Difference]: Without dead ends: 7 [2019-12-07 15:54:15,403 INFO L630 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 [2019-12-07 15:54:15,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2019-12-07 15:54:15,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2019-12-07 15:54:15,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2019-12-07 15:54:15,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2019-12-07 15:54:15,423 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 5 [2019-12-07 15:54:15,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 15:54:15,423 INFO L462 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2019-12-07 15:54:15,424 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-12-07 15:54:15,424 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2019-12-07 15:54:15,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-12-07 15:54:15,424 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 15:54:15,424 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-12-07 15:54:15,424 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 15:54:15,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:54:15,424 INFO L82 PathProgramCache]: Analyzing trace with hash 2104433358, now seen corresponding path program 1 times [2019-12-07 15:54:15,425 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 15:54:15,425 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596909904] [2019-12-07 15:54:15,425 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:54:15,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:54:15,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:54:15,465 INFO L174 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2019-12-07 15:54:15,466 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-12-07 15:54:15,481 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 03:54:15 BoogieIcfgContainer [2019-12-07 15:54:15,481 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 15:54:15,481 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 15:54:15,482 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 15:54:15,482 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 15:54:15,482 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 03:54:15" (3/4) ... [2019-12-07 15:54:15,484 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-12-07 15:54:15,484 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 15:54:15,486 INFO L168 Benchmark]: Toolchain (without parser) took 666.92 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 97.0 MB). Free memory was 934.1 MB in the beginning and 1.0 GB in the end (delta: -108.9 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 15:54:15,486 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 954.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 15:54:15,487 INFO L168 Benchmark]: CACSL2BoogieTranslator took 204.10 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 97.0 MB). Free memory was 934.1 MB in the beginning and 1.1 GB in the end (delta: -160.5 MB). Peak memory consumption was 19.2 MB. Max. memory is 11.5 GB. [2019-12-07 15:54:15,487 INFO L168 Benchmark]: Boogie Procedure Inliner took 22.31 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 11.5 GB. [2019-12-07 15:54:15,487 INFO L168 Benchmark]: Boogie Preprocessor took 14.27 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 11.5 GB. [2019-12-07 15:54:15,488 INFO L168 Benchmark]: RCFGBuilder took 175.01 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 19.2 MB). Peak memory consumption was 19.2 MB. Max. memory is 11.5 GB. [2019-12-07 15:54:15,488 INFO L168 Benchmark]: TraceAbstraction took 245.49 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 27.0 MB). Peak memory consumption was 27.0 MB. Max. memory is 11.5 GB. [2019-12-07 15:54:15,489 INFO L168 Benchmark]: Witness Printer took 2.77 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 11.5 GB. [2019-12-07 15:54:15,491 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 954.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 204.10 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 97.0 MB). Free memory was 934.1 MB in the beginning and 1.1 GB in the end (delta: -160.5 MB). Peak memory consumption was 19.2 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 22.31 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 14.27 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 11.5 GB. * RCFGBuilder took 175.01 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 19.2 MB). Peak memory consumption was 19.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 245.49 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 27.0 MB). Peak memory consumption was 27.0 MB. Max. memory is 11.5 GB. * Witness Printer took 2.77 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. 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 27. Possible FailurePath: [L9] float pi = 3.14159 ; [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) [L28] EXPR (count>>1 % 2 == 0) ? 1 : -1 [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, 9 locations, 1 error locations. Result: UNSAFE, OverallTime: 0.1s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 9 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=9occurred 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, 11 NumberOfCodeBlocks, 11 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 4 ConstructedInterpolants, 0 QuantifiedInterpolants, 16 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 0.1.25-f470102 [2019-12-07 15:54:16,854 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 15:54:16,855 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 15:54:16,864 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 15:54:16,864 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 15:54:16,865 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 15:54:16,866 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 15:54:16,868 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 15:54:16,869 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 15:54:16,870 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 15:54:16,871 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 15:54:16,872 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 15:54:16,872 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 15:54:16,873 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 15:54:16,874 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 15:54:16,875 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 15:54:16,876 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 15:54:16,877 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 15:54:16,878 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 15:54:16,880 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 15:54:16,882 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 15:54:16,883 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 15:54:16,884 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 15:54:16,885 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 15:54:16,887 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 15:54:16,888 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 15:54:16,888 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 15:54:16,889 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 15:54:16,889 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 15:54:16,890 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 15:54:16,890 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 15:54:16,890 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 15:54:16,891 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 15:54:16,891 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 15:54:16,892 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 15:54:16,892 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 15:54:16,893 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 15:54:16,893 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 15:54:16,893 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 15:54:16,894 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 15:54:16,895 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 15:54:16,895 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_d35ecb31-7489-446f-af87-a046c724be71/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2019-12-07 15:54:16,908 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 15:54:16,908 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 15:54:16,908 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-12-07 15:54:16,909 INFO L138 SettingsManager]: * User list type=DISABLED [2019-12-07 15:54:16,909 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-12-07 15:54:16,909 INFO L138 SettingsManager]: * Explicit value domain=true [2019-12-07 15:54:16,909 INFO L138 SettingsManager]: * Octagon Domain=false [2019-12-07 15:54:16,909 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-12-07 15:54:16,909 INFO L138 SettingsManager]: * Interval Domain=false [2019-12-07 15:54:16,910 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 15:54:16,910 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 15:54:16,910 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 15:54:16,910 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 15:54:16,910 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 15:54:16,911 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 15:54:16,911 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 15:54:16,911 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-12-07 15:54:16,911 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-12-07 15:54:16,911 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-12-07 15:54:16,911 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 15:54:16,911 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 15:54:16,912 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 15:54:16,912 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 15:54:16,912 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 15:54:16,912 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-07 15:54:16,912 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 15:54:16,912 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 15:54:16,912 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 15:54:16,913 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 15:54:16,913 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 15:54:16,913 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 15:54:16,913 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2019-12-07 15:54:16,913 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-12-07 15:54:16,913 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 15:54:16,913 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 15:54:16,913 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-07 15:54:16,914 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/run_dir_d35ecb31-7489-446f-af87-a046c724be71/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 [2019-12-07 15:54:17,073 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 15:54:17,081 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 15:54:17,083 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 15:54:17,084 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 15:54:17,085 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 15:54:17,085 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_d35ecb31-7489-446f-af87-a046c724be71/bin/utaipan/../../sv-benchmarks/c/loop-floats-scientific-comp/loop2-1.c [2019-12-07 15:54:17,123 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_d35ecb31-7489-446f-af87-a046c724be71/bin/utaipan/data/90a88b26b/0375bc8f88ed4614ad840c36dc519af8/FLAG79483940f [2019-12-07 15:54:17,554 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 15:54:17,555 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_d35ecb31-7489-446f-af87-a046c724be71/sv-benchmarks/c/loop-floats-scientific-comp/loop2-1.c [2019-12-07 15:54:17,559 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_d35ecb31-7489-446f-af87-a046c724be71/bin/utaipan/data/90a88b26b/0375bc8f88ed4614ad840c36dc519af8/FLAG79483940f [2019-12-07 15:54:17,567 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_d35ecb31-7489-446f-af87-a046c724be71/bin/utaipan/data/90a88b26b/0375bc8f88ed4614ad840c36dc519af8 [2019-12-07 15:54:17,569 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 15:54:17,570 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 15:54:17,570 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 15:54:17,571 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 15:54:17,573 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 15:54:17,573 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 03:54:17" (1/1) ... [2019-12-07 15:54:17,575 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@faaa545 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:54:17, skipping insertion in model container [2019-12-07 15:54:17,575 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 03:54:17" (1/1) ... [2019-12-07 15:54:17,580 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 15:54:17,591 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 15:54:17,696 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 15:54:17,700 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 15:54:17,713 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 15:54:17,723 INFO L208 MainTranslator]: Completed translation [2019-12-07 15:54:17,724 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:54:17 WrapperNode [2019-12-07 15:54:17,724 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 15:54:17,724 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 15:54:17,724 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 15:54:17,724 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 15:54:17,730 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:54:17" (1/1) ... [2019-12-07 15:54:17,735 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:54:17" (1/1) ... [2019-12-07 15:54:17,779 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 15:54:17,779 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 15:54:17,779 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 15:54:17,779 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 15:54:17,785 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:54:17" (1/1) ... [2019-12-07 15:54:17,786 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:54:17" (1/1) ... [2019-12-07 15:54:17,787 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:54:17" (1/1) ... [2019-12-07 15:54:17,787 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:54:17" (1/1) ... [2019-12-07 15:54:17,792 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:54:17" (1/1) ... [2019-12-07 15:54:17,795 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:54:17" (1/1) ... [2019-12-07 15:54:17,796 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:54:17" (1/1) ... [2019-12-07 15:54:17,798 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 15:54:17,798 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 15:54:17,798 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 15:54:17,798 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 15:54:17,799 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:54:17" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d35ecb31-7489-446f-af87-a046c724be71/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 [2019-12-07 15:54:17,837 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 15:54:17,837 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 15:54:21,614 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 15:54:21,614 INFO L287 CfgBuilder]: Removed 7 assume(true) statements. [2019-12-07 15:54:21,614 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 03:54:21 BoogieIcfgContainer [2019-12-07 15:54:21,615 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 15:54:21,615 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 15:54:21,616 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 15:54:21,617 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 15:54:21,618 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 03:54:17" (1/3) ... [2019-12-07 15:54:21,618 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@391678f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 03:54:21, skipping insertion in model container [2019-12-07 15:54:21,618 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:54:17" (2/3) ... [2019-12-07 15:54:21,619 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@391678f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 03:54:21, skipping insertion in model container [2019-12-07 15:54:21,619 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 03:54:21" (3/3) ... [2019-12-07 15:54:21,620 INFO L109 eAbstractionObserver]: Analyzing ICFG loop2-1.c [2019-12-07 15:54:21,626 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 15:54:21,631 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-07 15:54:21,639 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-12-07 15:54:21,654 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 15:54:21,654 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 15:54:21,654 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 15:54:21,655 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 15:54:21,655 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 15:54:21,655 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 15:54:21,655 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 15:54:21,655 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 15:54:21,664 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states. [2019-12-07 15:54:21,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-12-07 15:54:21,668 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 15:54:21,669 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-12-07 15:54:21,669 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 15:54:21,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:54:21,673 INFO L82 PathProgramCache]: Analyzing trace with hash 890122407, now seen corresponding path program 1 times [2019-12-07 15:54:21,680 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-12-07 15:54:21,680 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [984523417] [2019-12-07 15:54:21,681 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d35ecb31-7489-446f-af87-a046c724be71/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 [2019-12-07 15:54:21,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:54:21,783 INFO L264 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 1 conjunts are in the unsatisfiable core [2019-12-07 15:54:21,787 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:54:21,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:54:21,796 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 15:54:21,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:54:21,799 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [984523417] [2019-12-07 15:54:21,800 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 15:54:21,800 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-12-07 15:54:21,801 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038693017] [2019-12-07 15:54:21,804 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-12-07 15:54:21,804 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-12-07 15:54:21,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-12-07 15:54:21,813 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-12-07 15:54:21,814 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 2 states. [2019-12-07 15:54:21,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:54:21,825 INFO L93 Difference]: Finished difference Result 22 states and 26 transitions. [2019-12-07 15:54:21,825 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-12-07 15:54:21,826 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 6 [2019-12-07 15:54:21,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 15:54:21,832 INFO L225 Difference]: With dead ends: 22 [2019-12-07 15:54:21,832 INFO L226 Difference]: Without dead ends: 10 [2019-12-07 15:54:21,835 INFO L630 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 [2019-12-07 15:54:21,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2019-12-07 15:54:21,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2019-12-07 15:54:21,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2019-12-07 15:54:21,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 11 transitions. [2019-12-07 15:54:21,858 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 11 transitions. Word has length 6 [2019-12-07 15:54:21,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 15:54:21,858 INFO L462 AbstractCegarLoop]: Abstraction has 10 states and 11 transitions. [2019-12-07 15:54:21,858 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-12-07 15:54:21,858 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 11 transitions. [2019-12-07 15:54:21,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-12-07 15:54:21,858 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 15:54:21,858 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 15:54:22,059 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2019-12-07 15:54:22,060 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 15:54:22,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:54:22,061 INFO L82 PathProgramCache]: Analyzing trace with hash 642088082, now seen corresponding path program 1 times [2019-12-07 15:54:22,062 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-12-07 15:54:22,062 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1366967183] [2019-12-07 15:54:22,062 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d35ecb31-7489-446f-af87-a046c724be71/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 [2019-12-07 15:54:22,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:54:23,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:54:23,462 INFO L174 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2019-12-07 15:54:23,462 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-12-07 15:54:23,664 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2019-12-07 15:54:23,703 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 03:54:23 BoogieIcfgContainer [2019-12-07 15:54:23,703 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 15:54:23,704 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 15:54:23,704 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 15:54:23,704 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 15:54:23,704 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 03:54:21" (3/4) ... [2019-12-07 15:54:23,706 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-12-07 15:54:23,739 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_d35ecb31-7489-446f-af87-a046c724be71/bin/utaipan/witness.graphml [2019-12-07 15:54:23,740 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 15:54:23,741 INFO L168 Benchmark]: Toolchain (without parser) took 6170.82 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 129.5 MB). Free memory was 951.0 MB in the beginning and 1.0 GB in the end (delta: -97.3 MB). Peak memory consumption was 32.2 MB. Max. memory is 11.5 GB. [2019-12-07 15:54:23,741 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 981.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 15:54:23,742 INFO L168 Benchmark]: CACSL2BoogieTranslator took 153.50 ms. Allocated memory is still 1.0 GB. Free memory was 951.0 MB in the beginning and 940.3 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-12-07 15:54:23,742 INFO L168 Benchmark]: Boogie Procedure Inliner took 54.81 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 129.5 MB). Free memory was 940.3 MB in the beginning and 1.1 GB in the end (delta: -184.9 MB). Peak memory consumption was 15.6 MB. Max. memory is 11.5 GB. [2019-12-07 15:54:23,743 INFO L168 Benchmark]: Boogie Preprocessor took 18.64 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: 6.9 MB). Peak memory consumption was 6.9 MB. Max. memory is 11.5 GB. [2019-12-07 15:54:23,743 INFO L168 Benchmark]: RCFGBuilder took 3816.61 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 25.2 MB). Peak memory consumption was 25.2 MB. Max. memory is 11.5 GB. [2019-12-07 15:54:23,743 INFO L168 Benchmark]: TraceAbstraction took 2087.74 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 44.8 MB). Peak memory consumption was 44.8 MB. Max. memory is 11.5 GB. [2019-12-07 15:54:23,743 INFO L168 Benchmark]: Witness Printer took 36.19 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 15:54:23,745 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 981.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 153.50 ms. Allocated memory is still 1.0 GB. Free memory was 951.0 MB in the beginning and 940.3 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 54.81 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 129.5 MB). Free memory was 940.3 MB in the beginning and 1.1 GB in the end (delta: -184.9 MB). Peak memory consumption was 15.6 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 18.64 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: 6.9 MB). Peak memory consumption was 6.9 MB. Max. memory is 11.5 GB. * RCFGBuilder took 3816.61 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 25.2 MB). Peak memory consumption was 25.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 2087.74 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 44.8 MB). Peak memory consumption was 44.8 MB. Max. memory is 11.5 GB. * Witness Printer took 36.19 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 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: 2.0s, 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, 17 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...