./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/loop-floats-scientific-comp/loop2_false-unreach-call.c.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5842f4b8 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_cbc3bba9-ea4c-4d88-b14a-eb58fdf25e2f/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_cbc3bba9-ea4c-4d88-b14a-eb58fdf25e2f/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_cbc3bba9-ea4c-4d88-b14a-eb58fdf25e2f/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_cbc3bba9-ea4c-4d88-b14a-eb58fdf25e2f/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loop-floats-scientific-comp/loop2_false-unreach-call.c.i -s /tmp/vcloud-vcloud-master/worker/working_dir_cbc3bba9-ea4c-4d88-b14a-eb58fdf25e2f/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_cbc3bba9-ea4c-4d88-b14a-eb58fdf25e2f/bin-2019/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ac1c2f023046690eb69a7c8f4224e12d57f24d83 ........................................................................................................................................................................................................................................................................................................................................ Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_cbc3bba9-ea4c-4d88-b14a-eb58fdf25e2f/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_cbc3bba9-ea4c-4d88-b14a-eb58fdf25e2f/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_cbc3bba9-ea4c-4d88-b14a-eb58fdf25e2f/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_cbc3bba9-ea4c-4d88-b14a-eb58fdf25e2f/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loop-floats-scientific-comp/loop2_false-unreach-call.c.i -s /tmp/vcloud-vcloud-master/worker/working_dir_cbc3bba9-ea4c-4d88-b14a-eb58fdf25e2f/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_cbc3bba9-ea4c-4d88-b14a-eb58fdf25e2f/bin-2019/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ac1c2f023046690eb69a7c8f4224e12d57f24d83 ........................................................................................................................................................................................................................................................................................................................................... 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 0.1.23-5842f4b [2018-11-18 14:56:12,940 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 14:56:12,941 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 14:56:12,947 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 14:56:12,947 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 14:56:12,948 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 14:56:12,949 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 14:56:12,950 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 14:56:12,951 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 14:56:12,951 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 14:56:12,952 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 14:56:12,952 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 14:56:12,953 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 14:56:12,954 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 14:56:12,954 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 14:56:12,955 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 14:56:12,955 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 14:56:12,957 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 14:56:12,958 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 14:56:12,959 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 14:56:12,960 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 14:56:12,961 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 14:56:12,962 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 14:56:12,963 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 14:56:12,963 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 14:56:12,963 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 14:56:12,964 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 14:56:12,965 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 14:56:12,965 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 14:56:12,966 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 14:56:12,966 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 14:56:12,967 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 14:56:12,967 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 14:56:12,967 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 14:56:12,968 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 14:56:12,968 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 14:56:12,969 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_cbc3bba9-ea4c-4d88-b14a-eb58fdf25e2f/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-11-18 14:56:12,979 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 14:56:12,979 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 14:56:12,979 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-18 14:56:12,979 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-11-18 14:56:12,980 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-18 14:56:12,980 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-18 14:56:12,980 INFO L133 SettingsManager]: * Use SBE=true [2018-11-18 14:56:12,980 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 14:56:12,981 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-18 14:56:12,981 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-18 14:56:12,981 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-18 14:56:12,981 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 14:56:12,981 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-18 14:56:12,981 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-18 14:56:12,981 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-18 14:56:12,982 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-18 14:56:12,982 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 14:56:12,982 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 14:56:12,982 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-18 14:56:12,982 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 14:56:12,982 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 14:56:12,982 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-18 14:56:12,983 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-18 14:56:12,983 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 14:56:12,983 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 14:56:12,983 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-18 14:56:12,983 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-18 14:56:12,983 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-18 14:56:12,983 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-18 14:56:12,984 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-18 14:56:12,984 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/working_dir_cbc3bba9-ea4c-4d88-b14a-eb58fdf25e2f/bin-2019/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ac1c2f023046690eb69a7c8f4224e12d57f24d83 [2018-11-18 14:56:13,006 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 14:56:13,013 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 14:56:13,015 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 14:56:13,015 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 14:56:13,016 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 14:56:13,016 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_cbc3bba9-ea4c-4d88-b14a-eb58fdf25e2f/bin-2019/uautomizer/../../sv-benchmarks/c/loop-floats-scientific-comp/loop2_false-unreach-call.c.i [2018-11-18 14:56:13,054 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_cbc3bba9-ea4c-4d88-b14a-eb58fdf25e2f/bin-2019/uautomizer/data/993a98d2e/5fc0aeaf291345568665bc09a04e8b61/FLAG24cd15b86 [2018-11-18 14:56:13,456 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 14:56:13,456 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_cbc3bba9-ea4c-4d88-b14a-eb58fdf25e2f/sv-benchmarks/c/loop-floats-scientific-comp/loop2_false-unreach-call.c.i [2018-11-18 14:56:13,460 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_cbc3bba9-ea4c-4d88-b14a-eb58fdf25e2f/bin-2019/uautomizer/data/993a98d2e/5fc0aeaf291345568665bc09a04e8b61/FLAG24cd15b86 [2018-11-18 14:56:13,468 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_cbc3bba9-ea4c-4d88-b14a-eb58fdf25e2f/bin-2019/uautomizer/data/993a98d2e/5fc0aeaf291345568665bc09a04e8b61 [2018-11-18 14:56:13,470 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 14:56:13,470 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-18 14:56:13,471 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 14:56:13,471 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 14:56:13,474 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 14:56:13,475 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 02:56:13" (1/1) ... [2018-11-18 14:56:13,477 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2bc33b0d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:56:13, skipping insertion in model container [2018-11-18 14:56:13,477 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 02:56:13" (1/1) ... [2018-11-18 14:56:13,483 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 14:56:13,499 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 14:56:13,608 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 14:56:13,611 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 14:56:13,622 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 14:56:13,630 INFO L195 MainTranslator]: Completed translation [2018-11-18 14:56:13,631 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:56:13 WrapperNode [2018-11-18 14:56:13,631 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 14:56:13,631 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 14:56:13,631 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 14:56:13,631 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 14:56:13,638 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:56:13" (1/1) ... [2018-11-18 14:56:13,638 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:56:13" (1/1) ... [2018-11-18 14:56:13,642 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:56:13" (1/1) ... [2018-11-18 14:56:13,642 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:56:13" (1/1) ... [2018-11-18 14:56:13,645 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:56:13" (1/1) ... [2018-11-18 14:56:13,649 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:56:13" (1/1) ... [2018-11-18 14:56:13,649 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:56:13" (1/1) ... [2018-11-18 14:56:13,650 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 14:56:13,651 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 14:56:13,651 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 14:56:13,651 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 14:56:13,651 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:56:13" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_cbc3bba9-ea4c-4d88-b14a-eb58fdf25e2f/bin-2019/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 14:56:13,723 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-18 14:56:13,723 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 14:56:13,723 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-11-18 14:56:13,723 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-18 14:56:13,723 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-11-18 14:56:13,724 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2018-11-18 14:56:13,724 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-11-18 14:56:13,724 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2018-11-18 14:56:13,724 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-11-18 14:56:13,724 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-18 14:56:13,724 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-18 14:56:13,724 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 14:56:13,822 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 14:56:13,822 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 02:56:13 BoogieIcfgContainer [2018-11-18 14:56:13,822 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 14:56:13,823 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-18 14:56:13,823 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-18 14:56:13,826 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-18 14:56:13,826 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 02:56:13" (1/3) ... [2018-11-18 14:56:13,826 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e70f505 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 02:56:13, skipping insertion in model container [2018-11-18 14:56:13,827 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:56:13" (2/3) ... [2018-11-18 14:56:13,827 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e70f505 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 02:56:13, skipping insertion in model container [2018-11-18 14:56:13,827 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 02:56:13" (3/3) ... [2018-11-18 14:56:13,828 INFO L112 eAbstractionObserver]: Analyzing ICFG loop2_false-unreach-call.c.i [2018-11-18 14:56:13,836 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-18 14:56:13,841 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-18 14:56:13,850 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-18 14:56:13,866 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-18 14:56:13,867 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-18 14:56:13,867 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-18 14:56:13,867 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-18 14:56:13,867 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 14:56:13,867 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 14:56:13,867 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-18 14:56:13,867 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 14:56:13,867 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-18 14:56:13,876 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2018-11-18 14:56:13,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-11-18 14:56:13,880 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 14:56:13,880 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 14:56:13,881 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 14:56:13,884 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 14:56:13,885 INFO L82 PathProgramCache]: Analyzing trace with hash 857481337, now seen corresponding path program 1 times [2018-11-18 14:56:13,886 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 14:56:13,886 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 14:56:13,915 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:56:13,915 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 14:56:13,915 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:56:13,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 14:56:13,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 14:56:13,963 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 14:56:13,963 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-18 14:56:13,965 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-18 14:56:13,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-18 14:56:13,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-18 14:56:13,974 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 2 states. [2018-11-18 14:56:13,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 14:56:13,987 INFO L93 Difference]: Finished difference Result 35 states and 40 transitions. [2018-11-18 14:56:13,987 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-18 14:56:13,988 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2018-11-18 14:56:13,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 14:56:13,995 INFO L225 Difference]: With dead ends: 35 [2018-11-18 14:56:13,995 INFO L226 Difference]: Without dead ends: 16 [2018-11-18 14:56:13,997 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-18 14:56:14,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2018-11-18 14:56:14,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2018-11-18 14:56:14,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2018-11-18 14:56:14,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2018-11-18 14:56:14,020 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 11 [2018-11-18 14:56:14,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 14:56:14,020 INFO L480 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2018-11-18 14:56:14,020 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-18 14:56:14,020 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2018-11-18 14:56:14,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-11-18 14:56:14,020 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 14:56:14,021 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 14:56:14,021 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 14:56:14,021 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 14:56:14,021 INFO L82 PathProgramCache]: Analyzing trace with hash 1154070091, now seen corresponding path program 1 times [2018-11-18 14:56:14,021 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 14:56:14,021 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 14:56:14,022 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:56:14,022 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 14:56:14,022 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:56:14,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 14:56:14,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 14:56:14,085 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 14:56:14,085 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-18 14:56:14,087 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-18 14:56:14,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-18 14:56:14,087 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 14:56:14,087 INFO L87 Difference]: Start difference. First operand 16 states and 17 transitions. Second operand 3 states. [2018-11-18 14:56:14,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 14:56:14,110 INFO L93 Difference]: Finished difference Result 30 states and 33 transitions. [2018-11-18 14:56:14,111 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-18 14:56:14,111 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2018-11-18 14:56:14,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 14:56:14,111 INFO L225 Difference]: With dead ends: 30 [2018-11-18 14:56:14,111 INFO L226 Difference]: Without dead ends: 20 [2018-11-18 14:56:14,112 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 14:56:14,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2018-11-18 14:56:14,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 19. [2018-11-18 14:56:14,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-11-18 14:56:14,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2018-11-18 14:56:14,115 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 15 [2018-11-18 14:56:14,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 14:56:14,115 INFO L480 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2018-11-18 14:56:14,115 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-18 14:56:14,115 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2018-11-18 14:56:14,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-11-18 14:56:14,116 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 14:56:14,116 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 14:56:14,116 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 14:56:14,116 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 14:56:14,116 INFO L82 PathProgramCache]: Analyzing trace with hash -1365889843, now seen corresponding path program 1 times [2018-11-18 14:56:14,116 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 14:56:14,116 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 14:56:14,117 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:56:14,117 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 14:56:14,117 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 14:56:14,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 14:56:14,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 14:56:14,142 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-11-18 14:56:14,156 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 02:56:14 BoogieIcfgContainer [2018-11-18 14:56:14,156 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-18 14:56:14,156 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-18 14:56:14,156 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-18 14:56:14,157 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-18 14:56:14,157 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 02:56:13" (3/4) ... [2018-11-18 14:56:14,159 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-11-18 14:56:14,159 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-18 14:56:14,160 INFO L168 Benchmark]: Toolchain (without parser) took 689.61 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 167.8 MB). Free memory was 953.1 MB in the beginning and 1.1 GB in the end (delta: -157.8 MB). Peak memory consumption was 10.0 MB. Max. memory is 11.5 GB. [2018-11-18 14:56:14,161 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 979.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 14:56:14,161 INFO L168 Benchmark]: CACSL2BoogieTranslator took 159.83 ms. Allocated memory is still 1.0 GB. Free memory was 953.1 MB in the beginning and 942.4 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-18 14:56:14,161 INFO L168 Benchmark]: Boogie Preprocessor took 19.31 ms. Allocated memory is still 1.0 GB. Free memory was 942.4 MB in the beginning and 939.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-18 14:56:14,162 INFO L168 Benchmark]: RCFGBuilder took 171.91 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 167.8 MB). Free memory was 939.7 MB in the beginning and 1.2 GB in the end (delta: -212.3 MB). Peak memory consumption was 14.3 MB. Max. memory is 11.5 GB. [2018-11-18 14:56:14,162 INFO L168 Benchmark]: TraceAbstraction took 332.93 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: 37.7 MB). Peak memory consumption was 37.7 MB. Max. memory is 11.5 GB. [2018-11-18 14:56:14,163 INFO L168 Benchmark]: Witness Printer took 2.78 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 14:56:14,165 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 979.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 159.83 ms. Allocated memory is still 1.0 GB. Free memory was 953.1 MB in the beginning and 942.4 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 19.31 ms. Allocated memory is still 1.0 GB. Free memory was 942.4 MB in the beginning and 939.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 171.91 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 167.8 MB). Free memory was 939.7 MB in the beginning and 1.2 GB in the end (delta: -212.3 MB). Peak memory consumption was 14.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 332.93 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: 37.7 MB). Peak memory consumption was 37.7 MB. Max. memory is 11.5 GB. * Witness Printer took 2.78 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 17, overapproximation of someBinaryArithmeticFLOAToperation at line 30. Possible FailurePath: [L9] float pi = 3.14159 ; VAL [\old(pi)=2, 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 [count=2, evenExp=1, multFactor=0, oddExp=3, pi=314159/100000, term=3, x=3] [L25] COND TRUE 1 [L27] term = term * (x/count) VAL [count=2, evenExp=1, multFactor=0, oddExp=3, pi=314159/100000, x=3] [L28] COND FALSE, EXPR !((count>>1 % 2 == 0) ? 1 : -1) VAL [(count>>1 % 2 == 0) ? 1 : -1=-1, count=2, evenExp=1, multFactor=0, oddExp=3, pi=314159/100000, x=3] [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 [count=4, multFactor=-1, pi=314159/100000, temp=0, x=3] [L44] CALL __VERIFIER_assert( oddExp >= evenExp ) VAL [\old(cond)=0, pi=314159/100000] [L7] COND TRUE !(cond) VAL [\old(cond)=0, cond=0, pi=314159/100000] [L7] __VERIFIER_error() VAL [\old(cond)=0, cond=0, pi=314159/100000] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 23 locations, 1 error locations. UNSAFE Result, 0.2s OverallTime, 3 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 39 SDtfs, 1 SDslu, 13 SDs, 0 SdLazy, 5 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=23occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 41 NumberOfCodeBlocks, 41 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 24 ConstructedInterpolants, 0 QuantifiedInterpolants, 716 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.23-5842f4b [2018-11-18 14:56:15,545 INFO L170 SettingsManager]: Resetting all preferences to default values... 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[2018-11-18 14:56:15,571 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 14:56:15,572 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 14:56:15,572 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 14:56:15,573 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 14:56:15,573 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 14:56:15,574 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 14:56:15,575 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 14:56:15,575 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 14:56:15,575 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 14:56:15,575 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 14:56:15,575 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 14:56:15,576 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 14:56:15,577 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 14:56:15,577 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_cbc3bba9-ea4c-4d88-b14a-eb58fdf25e2f/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2018-11-18 14:56:15,588 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 14:56:15,588 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 14:56:15,589 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-18 14:56:15,589 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-11-18 14:56:15,589 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-18 14:56:15,589 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-18 14:56:15,590 INFO L133 SettingsManager]: * Use SBE=true [2018-11-18 14:56:15,590 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 14:56:15,590 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-18 14:56:15,590 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-18 14:56:15,590 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 14:56:15,590 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-18 14:56:15,591 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-18 14:56:15,591 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-18 14:56:15,592 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-11-18 14:56:15,592 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-11-18 14:56:15,592 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-18 14:56:15,592 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 14:56:15,592 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 14:56:15,592 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-18 14:56:15,592 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 14:56:15,593 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 14:56:15,593 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-18 14:56:15,593 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-18 14:56:15,593 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 14:56:15,593 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 14:56:15,593 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-18 14:56:15,593 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-18 14:56:15,593 INFO L133 SettingsManager]: * Trace refinement strategy=WOLF [2018-11-18 14:56:15,594 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-18 14:56:15,594 INFO L133 SettingsManager]: * Command for external solver=cvc4nyu --tear-down-incremental --rewrite-divk --print-success --lang smt [2018-11-18 14:56:15,594 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-11-18 14:56:15,594 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/working_dir_cbc3bba9-ea4c-4d88-b14a-eb58fdf25e2f/bin-2019/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ac1c2f023046690eb69a7c8f4224e12d57f24d83 [2018-11-18 14:56:15,625 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 14:56:15,633 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 14:56:15,635 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 14:56:15,636 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 14:56:15,637 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 14:56:15,637 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_cbc3bba9-ea4c-4d88-b14a-eb58fdf25e2f/bin-2019/uautomizer/../../sv-benchmarks/c/loop-floats-scientific-comp/loop2_false-unreach-call.c.i [2018-11-18 14:56:15,680 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_cbc3bba9-ea4c-4d88-b14a-eb58fdf25e2f/bin-2019/uautomizer/data/3759a9a7a/1973639f7ded4018913d049235bf2f3e/FLAG57498f3c4 [2018-11-18 14:56:16,074 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 14:56:16,074 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_cbc3bba9-ea4c-4d88-b14a-eb58fdf25e2f/sv-benchmarks/c/loop-floats-scientific-comp/loop2_false-unreach-call.c.i [2018-11-18 14:56:16,077 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_cbc3bba9-ea4c-4d88-b14a-eb58fdf25e2f/bin-2019/uautomizer/data/3759a9a7a/1973639f7ded4018913d049235bf2f3e/FLAG57498f3c4 [2018-11-18 14:56:16,087 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_cbc3bba9-ea4c-4d88-b14a-eb58fdf25e2f/bin-2019/uautomizer/data/3759a9a7a/1973639f7ded4018913d049235bf2f3e [2018-11-18 14:56:16,089 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 14:56:16,090 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-18 14:56:16,091 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 14:56:16,091 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 14:56:16,093 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 14:56:16,094 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 02:56:16" (1/1) ... [2018-11-18 14:56:16,095 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@119b503f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:56:16, skipping insertion in model container [2018-11-18 14:56:16,095 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 02:56:16" (1/1) ... [2018-11-18 14:56:16,101 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 14:56:16,117 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 14:56:16,245 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 14:56:16,250 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 14:56:16,266 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 14:56:16,274 INFO L195 MainTranslator]: Completed translation [2018-11-18 14:56:16,274 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:56:16 WrapperNode [2018-11-18 14:56:16,274 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 14:56:16,275 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 14:56:16,275 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 14:56:16,275 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 14:56:16,283 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:56:16" (1/1) ... [2018-11-18 14:56:16,284 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:56:16" (1/1) ... [2018-11-18 14:56:16,288 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:56:16" (1/1) ... [2018-11-18 14:56:16,288 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:56:16" (1/1) ... [2018-11-18 14:56:16,292 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:56:16" (1/1) ... [2018-11-18 14:56:16,295 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:56:16" (1/1) ... [2018-11-18 14:56:16,296 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:56:16" (1/1) ... [2018-11-18 14:56:16,297 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 14:56:16,298 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 14:56:16,298 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 14:56:16,298 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 14:56:16,298 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:56:16" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_cbc3bba9-ea4c-4d88-b14a-eb58fdf25e2f/bin-2019/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 14:56:16,379 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-18 14:56:16,380 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 14:56:16,380 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-11-18 14:56:16,380 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-18 14:56:16,380 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-11-18 14:56:16,380 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2018-11-18 14:56:16,380 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-11-18 14:56:16,380 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2018-11-18 14:56:16,380 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-11-18 14:56:16,381 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-18 14:56:16,381 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-18 14:56:16,381 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 14:56:21,219 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 14:56:21,219 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 02:56:21 BoogieIcfgContainer [2018-11-18 14:56:21,219 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 14:56:21,220 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-18 14:56:21,220 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-18 14:56:21,222 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-18 14:56:21,222 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 02:56:16" (1/3) ... [2018-11-18 14:56:21,223 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b2dc10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 02:56:21, skipping insertion in model container [2018-11-18 14:56:21,223 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 02:56:16" (2/3) ... [2018-11-18 14:56:21,223 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b2dc10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 02:56:21, skipping insertion in model container [2018-11-18 14:56:21,223 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 02:56:21" (3/3) ... [2018-11-18 14:56:21,225 INFO L112 eAbstractionObserver]: Analyzing ICFG loop2_false-unreach-call.c.i [2018-11-18 14:56:21,234 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-18 14:56:21,240 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-18 14:56:21,252 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-18 14:56:21,276 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-18 14:56:21,276 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-18 14:56:21,276 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-18 14:56:21,277 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-18 14:56:21,277 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 14:56:21,277 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 14:56:21,277 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-18 14:56:21,277 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 14:56:21,277 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-18 14:56:21,290 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2018-11-18 14:56:21,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-11-18 14:56:21,294 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 14:56:21,294 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 14:56:21,296 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 14:56:21,299 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 14:56:21,299 INFO L82 PathProgramCache]: Analyzing trace with hash 857481337, now seen corresponding path program 1 times [2018-11-18 14:56:21,302 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 14:56:21,302 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_cbc3bba9-ea4c-4d88-b14a-eb58fdf25e2f/bin-2019/uautomizer/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2018-11-18 14:56:21,306 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 14:56:21,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 14:56:21,378 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 14:56:21,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 14:56:21,388 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 14:56:21,397 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 14:56:21,397 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-18 14:56:21,399 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-18 14:56:21,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-18 14:56:21,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-18 14:56:21,411 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 2 states. [2018-11-18 14:56:21,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 14:56:21,427 INFO L93 Difference]: Finished difference Result 35 states and 40 transitions. [2018-11-18 14:56:21,427 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-18 14:56:21,428 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2018-11-18 14:56:21,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 14:56:21,432 INFO L225 Difference]: With dead ends: 35 [2018-11-18 14:56:21,433 INFO L226 Difference]: Without dead ends: 16 [2018-11-18 14:56:21,434 INFO L604 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 [2018-11-18 14:56:21,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2018-11-18 14:56:21,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2018-11-18 14:56:21,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2018-11-18 14:56:21,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2018-11-18 14:56:21,456 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 11 [2018-11-18 14:56:21,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 14:56:21,456 INFO L480 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2018-11-18 14:56:21,456 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-18 14:56:21,457 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2018-11-18 14:56:21,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-11-18 14:56:21,457 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 14:56:21,457 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 14:56:21,458 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 14:56:21,458 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 14:56:21,458 INFO L82 PathProgramCache]: Analyzing trace with hash 1154070091, now seen corresponding path program 1 times [2018-11-18 14:56:21,459 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 14:56:21,459 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_cbc3bba9-ea4c-4d88-b14a-eb58fdf25e2f/bin-2019/uautomizer/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2018-11-18 14:56:21,470 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 14:56:22,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 14:56:22,117 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 14:56:22,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 14:56:22,131 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 14:56:22,144 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 14:56:22,144 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-18 14:56:22,145 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-18 14:56:22,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-18 14:56:22,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 14:56:22,146 INFO L87 Difference]: Start difference. First operand 16 states and 17 transitions. Second operand 3 states. [2018-11-18 14:56:27,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 14:56:27,178 INFO L93 Difference]: Finished difference Result 30 states and 33 transitions. [2018-11-18 14:56:27,178 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-18 14:56:27,178 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2018-11-18 14:56:27,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 14:56:27,179 INFO L225 Difference]: With dead ends: 30 [2018-11-18 14:56:27,179 INFO L226 Difference]: Without dead ends: 20 [2018-11-18 14:56:27,179 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 14:56:27,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2018-11-18 14:56:27,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 19. [2018-11-18 14:56:27,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-11-18 14:56:27,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2018-11-18 14:56:27,182 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 15 [2018-11-18 14:56:27,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 14:56:27,183 INFO L480 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2018-11-18 14:56:27,183 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-18 14:56:27,183 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2018-11-18 14:56:27,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-11-18 14:56:27,183 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 14:56:27,183 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 14:56:27,184 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 14:56:27,184 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 14:56:27,184 INFO L82 PathProgramCache]: Analyzing trace with hash -1365889843, now seen corresponding path program 1 times [2018-11-18 14:56:27,184 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 14:56:27,184 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_cbc3bba9-ea4c-4d88-b14a-eb58fdf25e2f/bin-2019/uautomizer/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2018-11-18 14:56:27,197 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 14:56:27,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 14:56:28,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 14:56:28,607 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-11-18 14:56:28,625 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 02:56:28 BoogieIcfgContainer [2018-11-18 14:56:28,625 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-18 14:56:28,626 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-18 14:56:28,626 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-18 14:56:28,626 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-18 14:56:28,626 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 02:56:21" (3/4) ... [2018-11-18 14:56:28,628 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-11-18 14:56:28,658 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_cbc3bba9-ea4c-4d88-b14a-eb58fdf25e2f/bin-2019/uautomizer/witness.graphml [2018-11-18 14:56:28,658 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-18 14:56:28,658 INFO L168 Benchmark]: Toolchain (without parser) took 12568.65 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 153.6 MB). Free memory was 949.7 MB in the beginning and 1.1 GB in the end (delta: -120.9 MB). Peak memory consumption was 32.7 MB. Max. memory is 11.5 GB. [2018-11-18 14:56:28,659 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 14:56:28,659 INFO L168 Benchmark]: CACSL2BoogieTranslator took 183.47 ms. Allocated memory is still 1.0 GB. Free memory was 949.7 MB in the beginning and 933.6 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. [2018-11-18 14:56:28,660 INFO L168 Benchmark]: Boogie Preprocessor took 22.67 ms. Allocated memory is still 1.0 GB. Free memory is still 933.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 14:56:28,660 INFO L168 Benchmark]: RCFGBuilder took 4921.63 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 153.6 MB). Free memory was 933.6 MB in the beginning and 1.1 GB in the end (delta: -189.9 MB). Peak memory consumption was 20.5 MB. Max. memory is 11.5 GB. [2018-11-18 14:56:28,660 INFO L168 Benchmark]: TraceAbstraction took 7405.69 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 46.1 MB). Peak memory consumption was 46.1 MB. Max. memory is 11.5 GB. [2018-11-18 14:56:28,661 INFO L168 Benchmark]: Witness Printer took 32.17 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: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. [2018-11-18 14:56:28,662 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 183.47 ms. Allocated memory is still 1.0 GB. Free memory was 949.7 MB in the beginning and 933.6 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 22.67 ms. Allocated memory is still 1.0 GB. Free memory is still 933.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 4921.63 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 153.6 MB). Free memory was 933.6 MB in the beginning and 1.1 GB in the end (delta: -189.9 MB). Peak memory consumption was 20.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 7405.69 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 46.1 MB). Peak memory consumption was 46.1 MB. Max. memory is 11.5 GB. * Witness Printer took 32.17 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: 6.7 MB). Peak memory consumption was 6.7 MB. 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 [\old(pi)=0.000000000000000000000000000000000000000000002802596928649634, 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 [count=2, evenExp=1.0, multFactor=0, octant=1.0471967458724976, oddExp=0.000000000000000000000000000000000000000000001401298464324817, pi=3.141590118408203, term=0.000000000000000000000000000000000000000000001401298464324817, x=0.000000000000000000000000000000000000000000001401298464324817] [L25] COND TRUE 1 [L27] term = term * (x/count) VAL [count=2, evenExp=1.0, multFactor=0, octant=1.0471967458724976, oddExp=0.000000000000000000000000000000000000000000001401298464324817, pi=3.141590118408203, term=0.0, x=0.000000000000000000000000000000000000000000001401298464324817] [L28] COND FALSE, EXPR !((count>>1 % 2 == 0) ? 1 : -1) VAL [(count>>1 % 2 == 0) ? 1 : -1=-1, count=2, evenExp=1.0, multFactor=0, octant=1.0471967458724976, oddExp=0.000000000000000000000000000000000000000000001401298464324817, pi=3.141590118408203, term=0.0, x=0.000000000000000000000000000000000000000000001401298464324817] [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 [count=4, evenExp=1.0, multFactor=4294967295, octant=1.0471967458724976, oddExp=0.000000000000000000000000000000000000000000001401298464324817, pi=3.141590118408203, temp=0, term=0.0, x=0.000000000000000000000000000000000000000000001401298464324817] [L44] CALL __VERIFIER_assert( oddExp >= evenExp ) VAL [\old(cond)=0, pi=3.141590118408203] [L7] COND TRUE !(cond) VAL [\old(cond)=0, cond=0, pi=3.141590118408203] [L7] __VERIFIER_error() VAL [\old(cond)=0, cond=0, pi=3.141590118408203] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 23 locations, 1 error locations. UNSAFE Result, 7.3s OverallTime, 3 OverallIterations, 1 TraceHistogramMax, 5.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 38 SDtfs, 1 SDslu, 12 SDs, 0 SdLazy, 5 SolverSat, 0 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 4.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=23occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 1.2s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 41 NumberOfCodeBlocks, 41 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 24 ConstructedInterpolants, 0 QuantifiedInterpolants, 464 SizeOfPredicates, 1 NumberOfNonLiveVariables, 62 ConjunctsInSsa, 3 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...