./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_f4a6b9da-a128-41d5-887d-02ede9063428/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_f4a6b9da-a128-41d5-887d-02ede9063428/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_f4a6b9da-a128-41d5-887d-02ede9063428/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_f4a6b9da-a128-41d5-887d-02ede9063428/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loop-floats-scientific-comp/loop2-1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_f4a6b9da-a128-41d5-887d-02ede9063428/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_f4a6b9da-a128-41d5-887d-02ede9063428/bin/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 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_f4a6b9da-a128-41d5-887d-02ede9063428/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_f4a6b9da-a128-41d5-887d-02ede9063428/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_f4a6b9da-a128-41d5-887d-02ede9063428/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_f4a6b9da-a128-41d5-887d-02ede9063428/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loop-floats-scientific-comp/loop2-1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_f4a6b9da-a128-41d5-887d-02ede9063428/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_f4a6b9da-a128-41d5-887d-02ede9063428/bin/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 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 18:37:30,632 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 18:37:30,633 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 18:37:30,642 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 18:37:30,642 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 18:37:30,643 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 18:37:30,644 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 18:37:30,646 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 18:37:30,647 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 18:37:30,648 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 18:37:30,649 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 18:37:30,650 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 18:37:30,650 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 18:37:30,651 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 18:37:30,652 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 18:37:30,653 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 18:37:30,654 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 18:37:30,655 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 18:37:30,657 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 18:37:30,658 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 18:37:30,660 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 18:37:30,661 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 18:37:30,662 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 18:37:30,662 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 18:37:30,664 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 18:37:30,664 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 18:37:30,665 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 18:37:30,665 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 18:37:30,666 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 18:37:30,666 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 18:37:30,666 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 18:37:30,667 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 18:37:30,667 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 18:37:30,668 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 18:37:30,669 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 18:37:30,669 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 18:37:30,669 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 18:37:30,670 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 18:37:30,670 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 18:37:30,671 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 18:37:30,671 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 18:37:30,672 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_f4a6b9da-a128-41d5-887d-02ede9063428/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-12-07 18:37:30,683 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 18:37:30,683 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 18:37:30,684 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-07 18:37:30,684 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-07 18:37:30,684 INFO L138 SettingsManager]: * Use SBE=true [2019-12-07 18:37:30,684 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 18:37:30,685 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 18:37:30,685 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 18:37:30,685 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 18:37:30,685 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 18:37:30,685 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 18:37:30,685 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 18:37:30,685 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 18:37:30,685 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 18:37:30,686 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 18:37:30,686 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 18:37:30,686 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 18:37:30,686 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 18:37:30,686 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-07 18:37:30,686 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 18:37:30,686 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 18:37:30,686 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 18:37:30,687 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 18:37:30,687 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 18:37:30,687 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 18:37:30,687 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-07 18:37:30,687 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-07 18:37:30,687 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 18:37:30,687 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 18:37:30,687 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_f4a6b9da-a128-41d5-887d-02ede9063428/bin/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 -> 46b366fd2d10429563cb722af2c8528eb816bb82 [2019-12-07 18:37:30,787 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 18:37:30,795 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 18:37:30,797 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 18:37:30,798 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 18:37:30,798 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 18:37:30,799 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_f4a6b9da-a128-41d5-887d-02ede9063428/bin/uautomizer/../../sv-benchmarks/c/loop-floats-scientific-comp/loop2-1.c [2019-12-07 18:37:30,836 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_f4a6b9da-a128-41d5-887d-02ede9063428/bin/uautomizer/data/5bd09837d/976d094169c6477790995a280752e550/FLAG7a3d37a0b [2019-12-07 18:37:31,253 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 18:37:31,254 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_f4a6b9da-a128-41d5-887d-02ede9063428/sv-benchmarks/c/loop-floats-scientific-comp/loop2-1.c [2019-12-07 18:37:31,258 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_f4a6b9da-a128-41d5-887d-02ede9063428/bin/uautomizer/data/5bd09837d/976d094169c6477790995a280752e550/FLAG7a3d37a0b [2019-12-07 18:37:31,266 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_f4a6b9da-a128-41d5-887d-02ede9063428/bin/uautomizer/data/5bd09837d/976d094169c6477790995a280752e550 [2019-12-07 18:37:31,268 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 18:37:31,269 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 18:37:31,270 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 18:37:31,270 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 18:37:31,272 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 18:37:31,273 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 06:37:31" (1/1) ... [2019-12-07 18:37:31,275 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e5ae4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:37:31, skipping insertion in model container [2019-12-07 18:37:31,275 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 06:37:31" (1/1) ... [2019-12-07 18:37:31,280 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 18:37:31,291 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 18:37:31,433 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 18:37:31,436 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 18:37:31,450 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 18:37:31,459 INFO L208 MainTranslator]: Completed translation [2019-12-07 18:37:31,459 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:37:31 WrapperNode [2019-12-07 18:37:31,459 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 18:37:31,460 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 18:37:31,460 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 18:37:31,460 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 18:37:31,465 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:37:31" (1/1) ... [2019-12-07 18:37:31,470 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:37:31" (1/1) ... [2019-12-07 18:37:31,483 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 18:37:31,483 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 18:37:31,483 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 18:37:31,483 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 18:37:31,489 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:37:31" (1/1) ... [2019-12-07 18:37:31,489 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:37:31" (1/1) ... [2019-12-07 18:37:31,490 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:37:31" (1/1) ... [2019-12-07 18:37:31,490 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:37:31" (1/1) ... [2019-12-07 18:37:31,493 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:37:31" (1/1) ... [2019-12-07 18:37:31,496 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:37:31" (1/1) ... [2019-12-07 18:37:31,497 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:37:31" (1/1) ... [2019-12-07 18:37:31,499 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 18:37:31,499 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 18:37:31,499 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 18:37:31,499 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 18:37:31,500 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:37:31" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f4a6b9da-a128-41d5-887d-02ede9063428/bin/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 [2019-12-07 18:37:31,537 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 18:37:31,538 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 18:37:31,642 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 18:37:31,642 INFO L287 CfgBuilder]: Removed 7 assume(true) statements. [2019-12-07 18:37:31,643 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 06:37:31 BoogieIcfgContainer [2019-12-07 18:37:31,643 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 18:37:31,644 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 18:37:31,644 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 18:37:31,646 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 18:37:31,646 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 06:37:31" (1/3) ... [2019-12-07 18:37:31,646 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e03cb74 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 06:37:31, skipping insertion in model container [2019-12-07 18:37:31,647 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:37:31" (2/3) ... [2019-12-07 18:37:31,647 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e03cb74 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 06:37:31, skipping insertion in model container [2019-12-07 18:37:31,647 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 06:37:31" (3/3) ... [2019-12-07 18:37:31,648 INFO L109 eAbstractionObserver]: Analyzing ICFG loop2-1.c [2019-12-07 18:37:31,654 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 18:37:31,658 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-07 18:37:31,665 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-12-07 18:37:31,679 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 18:37:31,679 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 18:37:31,679 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 18:37:31,679 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 18:37:31,679 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 18:37:31,679 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 18:37:31,679 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 18:37:31,680 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 18:37:31,688 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states. [2019-12-07 18:37:31,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-12-07 18:37:31,691 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 18:37:31,692 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-12-07 18:37:31,692 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 18:37:31,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:37:31,696 INFO L82 PathProgramCache]: Analyzing trace with hash 890122407, now seen corresponding path program 1 times [2019-12-07 18:37:31,701 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:37:31,702 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371938180] [2019-12-07 18:37:31,702 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:37:31,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:31,775 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 18:37:31,775 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371938180] [2019-12-07 18:37:31,776 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 18:37:31,776 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 18:37:31,777 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540331244] [2019-12-07 18:37:31,780 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-12-07 18:37:31,780 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 18:37:31,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-12-07 18:37:31,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-12-07 18:37:31,790 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 2 states. [2019-12-07 18:37:31,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 18:37:31,800 INFO L93 Difference]: Finished difference Result 22 states and 26 transitions. [2019-12-07 18:37:31,800 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-12-07 18:37:31,800 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 6 [2019-12-07 18:37:31,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 18:37:31,806 INFO L225 Difference]: With dead ends: 22 [2019-12-07 18:37:31,806 INFO L226 Difference]: Without dead ends: 10 [2019-12-07 18:37:31,808 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 18:37:31,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2019-12-07 18:37:31,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2019-12-07 18:37:31,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2019-12-07 18:37:31,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 11 transitions. [2019-12-07 18:37:31,828 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 11 transitions. Word has length 6 [2019-12-07 18:37:31,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 18:37:31,828 INFO L462 AbstractCegarLoop]: Abstraction has 10 states and 11 transitions. [2019-12-07 18:37:31,828 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-12-07 18:37:31,828 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 11 transitions. [2019-12-07 18:37:31,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-12-07 18:37:31,829 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 18:37:31,829 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 18:37:31,829 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 18:37:31,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:37:31,829 INFO L82 PathProgramCache]: Analyzing trace with hash 642088082, now seen corresponding path program 1 times [2019-12-07 18:37:31,829 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:37:31,830 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887089352] [2019-12-07 18:37:31,830 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:37:31,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:37:31,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:37:31,868 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 18:37:31,868 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-12-07 18:37:31,884 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 06:37:31 BoogieIcfgContainer [2019-12-07 18:37:31,884 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 18:37:31,885 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 18:37:31,885 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 18:37:31,885 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 18:37:31,885 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 06:37:31" (3/4) ... [2019-12-07 18:37:31,887 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-12-07 18:37:31,887 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 18:37:31,889 INFO L168 Benchmark]: Toolchain (without parser) took 619.21 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 107.5 MB). Free memory was 940.8 MB in the beginning and 1.1 GB in the end (delta: -116.9 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 18:37:31,889 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 955.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 18:37:31,890 INFO L168 Benchmark]: CACSL2BoogieTranslator took 189.79 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 107.5 MB). Free memory was 940.8 MB in the beginning and 1.1 GB in the end (delta: -161.6 MB). Peak memory consumption was 24.5 MB. Max. memory is 11.5 GB. [2019-12-07 18:37:31,890 INFO L168 Benchmark]: Boogie Procedure Inliner took 22.97 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 18:37:31,890 INFO L168 Benchmark]: Boogie Preprocessor took 15.59 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 18:37:31,891 INFO L168 Benchmark]: RCFGBuilder took 144.54 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: 16.5 MB). Peak memory consumption was 16.5 MB. Max. memory is 11.5 GB. [2019-12-07 18:37:31,891 INFO L168 Benchmark]: TraceAbstraction took 240.43 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: 28.2 MB). Peak memory consumption was 28.2 MB. Max. memory is 11.5 GB. [2019-12-07 18:37:31,891 INFO L168 Benchmark]: Witness Printer took 2.83 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 18:37:31,893 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 955.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 189.79 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 107.5 MB). Free memory was 940.8 MB in the beginning and 1.1 GB in the end (delta: -161.6 MB). Peak memory consumption was 24.5 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 22.97 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 15.59 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 144.54 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: 16.5 MB). Peak memory consumption was 16.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 240.43 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: 28.2 MB). Peak memory consumption was 28.2 MB. Max. memory is 11.5 GB. * Witness Printer took 2.83 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 7]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 44, overapproximation of someBinaryArithmeticFLOAToperation at line 30. Possible FailurePath: [L9] float pi = 3.14159 ; VAL [pi=314159/100000] [L15] float x = __VERIFIER_nondet_float() ; [L16] float octant = pi/3 ; [L18] float oddExp = x ; [L19] float evenExp = 1.0 ; [L20] float term = x ; [L21] unsigned int count = 2 ; [L22] int multFactor = 0 ; [L23] int temp ; VAL [pi=314159/100000] [L25] COND TRUE 1 [L27] term = term * (x/count) VAL [pi=314159/100000] [L28] EXPR (count>>1 % 2 == 0) ? 1 : -1 VAL [pi=314159/100000] [L28] multFactor = (count>>1 % 2 == 0) ? 1 : -1 [L30] evenExp = evenExp + multFactor*term [L32] count++ [L34] term = term * (x/count) [L36] oddExp = oddExp + multFactor*term [L38] count++ [L40] temp = __VERIFIER_nondet_int() [L41] COND TRUE temp == 0 VAL [pi=314159/100000] [L7] COND TRUE !(cond) VAL [pi=314159/100000] [L7] __VERIFIER_error() VAL [pi=314159/100000] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 14 locations, 1 error locations. Result: UNSAFE, OverallTime: 0.1s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 15 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=14occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 15 NumberOfCodeBlocks, 15 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 5 ConstructedInterpolants, 0 QuantifiedInterpolants, 25 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.25-f470102 [2019-12-07 18:37:33,245 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 18:37:33,247 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 18:37:33,256 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 18:37:33,256 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 18:37:33,257 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 18:37:33,258 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 18:37:33,260 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 18:37:33,261 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 18:37:33,262 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 18:37:33,263 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 18:37:33,264 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 18:37:33,264 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 18:37:33,265 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 18:37:33,266 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 18:37:33,267 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 18:37:33,268 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 18:37:33,269 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 18:37:33,270 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 18:37:33,272 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 18:37:33,274 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 18:37:33,275 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 18:37:33,276 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 18:37:33,277 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 18:37:33,279 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 18:37:33,279 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 18:37:33,280 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 18:37:33,280 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 18:37:33,281 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 18:37:33,281 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 18:37:33,282 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 18:37:33,282 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 18:37:33,283 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 18:37:33,283 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 18:37:33,284 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 18:37:33,284 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 18:37:33,285 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 18:37:33,285 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 18:37:33,285 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 18:37:33,286 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 18:37:33,286 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 18:37:33,287 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_f4a6b9da-a128-41d5-887d-02ede9063428/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2019-12-07 18:37:33,299 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 18:37:33,300 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 18:37:33,300 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-07 18:37:33,301 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-07 18:37:33,301 INFO L138 SettingsManager]: * Use SBE=true [2019-12-07 18:37:33,301 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 18:37:33,301 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 18:37:33,301 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 18:37:33,301 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 18:37:33,301 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 18:37:33,302 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 18:37:33,302 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 18:37:33,302 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-12-07 18:37:33,302 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-12-07 18:37:33,302 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 18:37:33,303 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 18:37:33,303 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 18:37:33,303 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 18:37:33,303 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 18:37:33,303 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-07 18:37:33,303 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 18:37:33,303 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 18:37:33,304 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 18:37:33,304 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 18:37:33,304 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 18:37:33,304 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 18:37:33,304 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-12-07 18:37:33,304 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-12-07 18:37:33,304 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 18:37:33,304 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 18:37:33,305 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-07 18:37:33,305 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_f4a6b9da-a128-41d5-887d-02ede9063428/bin/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 -> 46b366fd2d10429563cb722af2c8528eb816bb82 [2019-12-07 18:37:33,474 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 18:37:33,484 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 18:37:33,487 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 18:37:33,488 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 18:37:33,488 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 18:37:33,489 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_f4a6b9da-a128-41d5-887d-02ede9063428/bin/uautomizer/../../sv-benchmarks/c/loop-floats-scientific-comp/loop2-1.c [2019-12-07 18:37:33,533 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_f4a6b9da-a128-41d5-887d-02ede9063428/bin/uautomizer/data/db9077d43/85e53f3ed7ad4c71817a27da58fe08eb/FLAGa6ce7dbca [2019-12-07 18:37:33,998 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 18:37:33,998 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_f4a6b9da-a128-41d5-887d-02ede9063428/sv-benchmarks/c/loop-floats-scientific-comp/loop2-1.c [2019-12-07 18:37:34,003 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_f4a6b9da-a128-41d5-887d-02ede9063428/bin/uautomizer/data/db9077d43/85e53f3ed7ad4c71817a27da58fe08eb/FLAGa6ce7dbca [2019-12-07 18:37:34,011 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_f4a6b9da-a128-41d5-887d-02ede9063428/bin/uautomizer/data/db9077d43/85e53f3ed7ad4c71817a27da58fe08eb [2019-12-07 18:37:34,013 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 18:37:34,014 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 18:37:34,015 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 18:37:34,015 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 18:37:34,017 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 18:37:34,017 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 06:37:34" (1/1) ... [2019-12-07 18:37:34,019 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 06:37:34, skipping insertion in model container [2019-12-07 18:37:34,019 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 06:37:34" (1/1) ... [2019-12-07 18:37:34,024 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 18:37:34,035 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 18:37:34,141 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 18:37:34,145 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 18:37:34,158 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 18:37:34,168 INFO L208 MainTranslator]: Completed translation [2019-12-07 18:37:34,168 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:37:34 WrapperNode [2019-12-07 18:37:34,168 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 18:37:34,169 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 18:37:34,169 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 18:37:34,169 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 18:37:34,175 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:37:34" (1/1) ... [2019-12-07 18:37:34,180 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:37:34" (1/1) ... [2019-12-07 18:37:34,225 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 18:37:34,225 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 18:37:34,226 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 18:37:34,226 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 18:37:34,231 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:37:34" (1/1) ... [2019-12-07 18:37:34,232 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:37:34" (1/1) ... [2019-12-07 18:37:34,233 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:37:34" (1/1) ... [2019-12-07 18:37:34,233 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:37:34" (1/1) ... [2019-12-07 18:37:34,238 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:37:34" (1/1) ... [2019-12-07 18:37:34,240 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:37:34" (1/1) ... [2019-12-07 18:37:34,242 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:37:34" (1/1) ... [2019-12-07 18:37:34,243 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 18:37:34,243 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 18:37:34,244 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 18:37:34,244 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 18:37:34,244 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:37:34" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f4a6b9da-a128-41d5-887d-02ede9063428/bin/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 [2019-12-07 18:37:34,281 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 18:37:34,281 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 18:37:38,074 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 18:37:38,074 INFO L287 CfgBuilder]: Removed 7 assume(true) statements. [2019-12-07 18:37:38,075 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 06:37:38 BoogieIcfgContainer [2019-12-07 18:37:38,075 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 18:37:38,076 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 18:37:38,076 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 18:37:38,078 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 18:37:38,078 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 06:37:34" (1/3) ... [2019-12-07 18:37:38,079 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 06:37:38, skipping insertion in model container [2019-12-07 18:37:38,079 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:37:34" (2/3) ... [2019-12-07 18:37:38,079 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 06:37:38, skipping insertion in model container [2019-12-07 18:37:38,079 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 06:37:38" (3/3) ... [2019-12-07 18:37:38,080 INFO L109 eAbstractionObserver]: Analyzing ICFG loop2-1.c [2019-12-07 18:37:38,087 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 18:37:38,092 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-07 18:37:38,099 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-12-07 18:37:38,114 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 18:37:38,115 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 18:37:38,115 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 18:37:38,115 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 18:37:38,115 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 18:37:38,115 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 18:37:38,116 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 18:37:38,116 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 18:37:38,125 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states. [2019-12-07 18:37:38,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-12-07 18:37:38,129 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 18:37:38,129 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-12-07 18:37:38,130 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 18:37:38,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:37:38,134 INFO L82 PathProgramCache]: Analyzing trace with hash 890122407, now seen corresponding path program 1 times [2019-12-07 18:37:38,141 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-12-07 18:37:38,142 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1022690697] [2019-12-07 18:37:38,142 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f4a6b9da-a128-41d5-887d-02ede9063428/bin/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 [2019-12-07 18:37:38,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:37:38,250 INFO L264 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 1 conjunts are in the unsatisfiable core [2019-12-07 18:37:38,253 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 18:37:38,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 18:37:38,262 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 18:37:38,263 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 18:37:38,264 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1022690697] [2019-12-07 18:37:38,265 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 18:37:38,265 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-12-07 18:37:38,266 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029263472] [2019-12-07 18:37:38,268 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-12-07 18:37:38,269 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-12-07 18:37:38,277 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-12-07 18:37:38,277 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-12-07 18:37:38,278 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 2 states. [2019-12-07 18:37:38,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 18:37:38,288 INFO L93 Difference]: Finished difference Result 22 states and 26 transitions. [2019-12-07 18:37:38,288 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-12-07 18:37:38,289 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 6 [2019-12-07 18:37:38,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 18:37:38,295 INFO L225 Difference]: With dead ends: 22 [2019-12-07 18:37:38,295 INFO L226 Difference]: Without dead ends: 10 [2019-12-07 18:37:38,297 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 18:37:38,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2019-12-07 18:37:38,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2019-12-07 18:37:38,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2019-12-07 18:37:38,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 11 transitions. [2019-12-07 18:37:38,318 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 11 transitions. Word has length 6 [2019-12-07 18:37:38,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 18:37:38,318 INFO L462 AbstractCegarLoop]: Abstraction has 10 states and 11 transitions. [2019-12-07 18:37:38,318 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-12-07 18:37:38,318 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 11 transitions. [2019-12-07 18:37:38,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-12-07 18:37:38,319 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 18:37:38,319 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 18:37:38,519 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2019-12-07 18:37:38,520 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 18:37:38,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:37:38,520 INFO L82 PathProgramCache]: Analyzing trace with hash 642088082, now seen corresponding path program 1 times [2019-12-07 18:37:38,520 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-12-07 18:37:38,521 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1684197922] [2019-12-07 18:37:38,521 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f4a6b9da-a128-41d5-887d-02ede9063428/bin/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 [2019-12-07 18:37:39,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:37:39,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:37:39,889 INFO L174 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2019-12-07 18:37:39,889 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-12-07 18:37:40,091 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2019-12-07 18:37:40,143 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 06:37:40 BoogieIcfgContainer [2019-12-07 18:37:40,143 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 18:37:40,143 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 18:37:40,144 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 18:37:40,144 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 18:37:40,144 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 06:37:38" (3/4) ... [2019-12-07 18:37:40,146 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-12-07 18:37:40,178 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_f4a6b9da-a128-41d5-887d-02ede9063428/bin/uautomizer/witness.graphml [2019-12-07 18:37:40,178 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 18:37:40,179 INFO L168 Benchmark]: Toolchain (without parser) took 6165.06 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 130.0 MB). Free memory was 952.4 MB in the beginning and 1.1 GB in the end (delta: -102.7 MB). Peak memory consumption was 27.3 MB. Max. memory is 11.5 GB. [2019-12-07 18:37:40,180 INFO L168 Benchmark]: CDTParser took 0.19 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 18:37:40,180 INFO L168 Benchmark]: CACSL2BoogieTranslator took 153.93 ms. Allocated memory is still 1.0 GB. Free memory was 952.4 MB in the beginning and 941.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-12-07 18:37:40,181 INFO L168 Benchmark]: Boogie Procedure Inliner took 56.46 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 130.0 MB). Free memory was 941.6 MB in the beginning and 1.1 GB in the end (delta: -184.3 MB). Peak memory consumption was 15.5 MB. Max. memory is 11.5 GB. [2019-12-07 18:37:40,181 INFO L168 Benchmark]: Boogie Preprocessor took 17.84 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: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. [2019-12-07 18:37:40,181 INFO L168 Benchmark]: RCFGBuilder took 3831.66 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: 19.8 MB). Peak memory consumption was 19.8 MB. Max. memory is 11.5 GB. [2019-12-07 18:37:40,182 INFO L168 Benchmark]: TraceAbstraction took 2067.27 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 44.2 MB). Peak memory consumption was 44.2 MB. Max. memory is 11.5 GB. [2019-12-07 18:37:40,182 INFO L168 Benchmark]: Witness Printer took 34.74 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 18:37:40,183 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 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 153.93 ms. Allocated memory is still 1.0 GB. Free memory was 952.4 MB in the beginning and 941.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 56.46 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 130.0 MB). Free memory was 941.6 MB in the beginning and 1.1 GB in the end (delta: -184.3 MB). Peak memory consumption was 15.5 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 17.84 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: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. * RCFGBuilder took 3831.66 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: 19.8 MB). Peak memory consumption was 19.8 MB. Max. memory is 11.5 GB. * TraceAbstraction took 2067.27 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 44.2 MB). Peak memory consumption was 44.2 MB. Max. memory is 11.5 GB. * Witness Printer took 34.74 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 7]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L9] float pi = 3.14159 ; VAL [pi=3.141590118408203] [L15] float x = __VERIFIER_nondet_float() ; [L16] float octant = pi/3 ; [L18] float oddExp = x ; [L19] float evenExp = 1.0 ; [L20] float term = x ; [L21] unsigned int count = 2 ; [L22] int multFactor = 0 ; [L23] int temp ; VAL [pi=3.141590118408203] [L25] COND TRUE 1 [L27] term = term * (x/count) VAL [pi=3.141590118408203] [L28] EXPR (count>>1 % 2 == 0) ? 1 : -1 VAL [pi=3.141590118408203] [L28] multFactor = (count>>1 % 2 == 0) ? 1 : -1 [L30] evenExp = evenExp + multFactor*term [L32] count++ [L34] term = term * (x/count) [L36] oddExp = oddExp + multFactor*term [L38] count++ [L40] temp = __VERIFIER_nondet_int() [L41] COND TRUE temp == 0 VAL [pi=3.141590118408203] [L7] COND TRUE !(cond) VAL [pi=3.141590118408203] [L7] __VERIFIER_error() VAL [pi=3.141590118408203] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 14 locations, 1 error locations. Result: UNSAFE, OverallTime: 1.9s, 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...