./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 6b5699aa Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_93a99d76-b5e9-4b3c-93bc-743ee80e3a0a/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_93a99d76-b5e9-4b3c-93bc-743ee80e3a0a/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_93a99d76-b5e9-4b3c-93bc-743ee80e3a0a/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_93a99d76-b5e9-4b3c-93bc-743ee80e3a0a/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loop-floats-scientific-comp/loop2-1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_93a99d76-b5e9-4b3c-93bc-743ee80e3a0a/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_93a99d76-b5e9-4b3c-93bc-743ee80e3a0a/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_93a99d76-b5e9-4b3c-93bc-743ee80e3a0a/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_93a99d76-b5e9-4b3c-93bc-743ee80e3a0a/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_93a99d76-b5e9-4b3c-93bc-743ee80e3a0a/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_93a99d76-b5e9-4b3c-93bc-743ee80e3a0a/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loop-floats-scientific-comp/loop2-1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_93a99d76-b5e9-4b3c-93bc-743ee80e3a0a/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_93a99d76-b5e9-4b3c-93bc-743ee80e3a0a/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 0.1.24-6b5699a [2019-11-25 08:46:09,402 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-25 08:46:09,404 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-25 08:46:09,414 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-25 08:46:09,415 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-25 08:46:09,416 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-25 08:46:09,417 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-25 08:46:09,420 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-25 08:46:09,422 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-25 08:46:09,422 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-25 08:46:09,423 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-25 08:46:09,425 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-25 08:46:09,425 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-25 08:46:09,426 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-25 08:46:09,427 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-25 08:46:09,428 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-25 08:46:09,429 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-25 08:46:09,430 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-25 08:46:09,432 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-25 08:46:09,434 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-25 08:46:09,436 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-25 08:46:09,442 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-25 08:46:09,444 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-25 08:46:09,446 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-25 08:46:09,448 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-25 08:46:09,450 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-25 08:46:09,451 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-25 08:46:09,452 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-25 08:46:09,453 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-25 08:46:09,454 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-25 08:46:09,455 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-25 08:46:09,455 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-25 08:46:09,457 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-25 08:46:09,458 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-25 08:46:09,460 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-25 08:46:09,460 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-25 08:46:09,461 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-25 08:46:09,461 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-25 08:46:09,461 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-25 08:46:09,463 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-25 08:46:09,464 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-25 08:46:09,465 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_93a99d76-b5e9-4b3c-93bc-743ee80e3a0a/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-25 08:46:09,481 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-25 08:46:09,482 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-25 08:46:09,483 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-25 08:46:09,483 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-25 08:46:09,483 INFO L138 SettingsManager]: * Use SBE=true [2019-11-25 08:46:09,484 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-25 08:46:09,484 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-25 08:46:09,484 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-25 08:46:09,484 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-25 08:46:09,485 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-25 08:46:09,485 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-25 08:46:09,486 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-25 08:46:09,486 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-25 08:46:09,486 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-25 08:46:09,486 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-25 08:46:09,487 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-25 08:46:09,487 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-25 08:46:09,487 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-25 08:46:09,487 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-25 08:46:09,488 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-25 08:46:09,488 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-25 08:46:09,488 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-25 08:46:09,488 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-25 08:46:09,488 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-25 08:46:09,489 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-25 08:46:09,489 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-25 08:46:09,489 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-25 08:46:09,489 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-25 08:46:09,490 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_93a99d76-b5e9-4b3c-93bc-743ee80e3a0a/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 [2019-11-25 08:46:09,656 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-25 08:46:09,665 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-25 08:46:09,668 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-25 08:46:09,669 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-25 08:46:09,669 INFO L275 PluginConnector]: CDTParser initialized [2019-11-25 08:46:09,670 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_93a99d76-b5e9-4b3c-93bc-743ee80e3a0a/bin/uautomizer/../../sv-benchmarks/c/loop-floats-scientific-comp/loop2-1.c [2019-11-25 08:46:09,720 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_93a99d76-b5e9-4b3c-93bc-743ee80e3a0a/bin/uautomizer/data/a2be94978/b27d910fb29c41c08a9674dc80eb903c/FLAG8f74993ef [2019-11-25 08:46:10,068 INFO L306 CDTParser]: Found 1 translation units. [2019-11-25 08:46:10,069 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_93a99d76-b5e9-4b3c-93bc-743ee80e3a0a/sv-benchmarks/c/loop-floats-scientific-comp/loop2-1.c [2019-11-25 08:46:10,074 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_93a99d76-b5e9-4b3c-93bc-743ee80e3a0a/bin/uautomizer/data/a2be94978/b27d910fb29c41c08a9674dc80eb903c/FLAG8f74993ef [2019-11-25 08:46:10,464 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_93a99d76-b5e9-4b3c-93bc-743ee80e3a0a/bin/uautomizer/data/a2be94978/b27d910fb29c41c08a9674dc80eb903c [2019-11-25 08:46:10,467 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-25 08:46:10,468 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-25 08:46:10,472 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-25 08:46:10,472 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-25 08:46:10,475 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-25 08:46:10,476 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:46:10" (1/1) ... [2019-11-25 08:46:10,478 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@32c118fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:46:10, skipping insertion in model container [2019-11-25 08:46:10,478 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:46:10" (1/1) ... [2019-11-25 08:46:10,486 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-25 08:46:10,501 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-25 08:46:10,653 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:46:10,657 INFO L201 MainTranslator]: Completed pre-run [2019-11-25 08:46:10,731 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:46:10,749 INFO L205 MainTranslator]: Completed translation [2019-11-25 08:46:10,750 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:46:10 WrapperNode [2019-11-25 08:46:10,750 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-25 08:46:10,751 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-25 08:46:10,751 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-25 08:46:10,751 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-25 08:46:10,759 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:46:10" (1/1) ... [2019-11-25 08:46:10,765 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:46:10" (1/1) ... [2019-11-25 08:46:10,788 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-25 08:46:10,789 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-25 08:46:10,790 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-25 08:46:10,790 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-25 08:46:10,798 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:46:10" (1/1) ... [2019-11-25 08:46:10,798 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:46:10" (1/1) ... [2019-11-25 08:46:10,805 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:46:10" (1/1) ... [2019-11-25 08:46:10,809 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:46:10" (1/1) ... [2019-11-25 08:46:10,813 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:46:10" (1/1) ... [2019-11-25 08:46:10,825 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:46:10" (1/1) ... [2019-11-25 08:46:10,826 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:46:10" (1/1) ... [2019-11-25 08:46:10,833 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-25 08:46:10,835 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-25 08:46:10,835 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-25 08:46:10,835 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-25 08:46:10,836 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:46:10" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_93a99d76-b5e9-4b3c-93bc-743ee80e3a0a/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 [2019-11-25 08:46:10,924 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-25 08:46:10,925 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-25 08:46:11,104 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-25 08:46:11,104 INFO L284 CfgBuilder]: Removed 7 assume(true) statements. [2019-11-25 08:46:11,105 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:46:11 BoogieIcfgContainer [2019-11-25 08:46:11,105 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-25 08:46:11,106 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-25 08:46:11,106 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-25 08:46:11,109 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-25 08:46:11,109 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 08:46:10" (1/3) ... [2019-11-25 08:46:11,110 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e13e43d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:46:11, skipping insertion in model container [2019-11-25 08:46:11,111 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:46:10" (2/3) ... [2019-11-25 08:46:11,111 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e13e43d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:46:11, skipping insertion in model container [2019-11-25 08:46:11,111 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:46:11" (3/3) ... [2019-11-25 08:46:11,113 INFO L109 eAbstractionObserver]: Analyzing ICFG loop2-1.c [2019-11-25 08:46:11,121 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-25 08:46:11,127 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-25 08:46:11,138 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-25 08:46:11,155 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-25 08:46:11,155 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-25 08:46:11,156 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-25 08:46:11,156 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-25 08:46:11,156 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-25 08:46:11,156 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-25 08:46:11,156 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-25 08:46:11,157 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-25 08:46:11,168 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states. [2019-11-25 08:46:11,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-11-25 08:46:11,172 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:46:11,173 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-11-25 08:46:11,173 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:46:11,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:46:11,178 INFO L82 PathProgramCache]: Analyzing trace with hash 890122407, now seen corresponding path program 1 times [2019-11-25 08:46:11,184 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:46:11,184 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376560746] [2019-11-25 08:46:11,185 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:46:11,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:46:11,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:46:11,285 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376560746] [2019-11-25 08:46:11,286 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:46:11,286 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-25 08:46:11,287 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646701081] [2019-11-25 08:46:11,291 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-25 08:46:11,292 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:46:11,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-25 08:46:11,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-25 08:46:11,306 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 2 states. [2019-11-25 08:46:11,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:46:11,321 INFO L93 Difference]: Finished difference Result 22 states and 26 transitions. [2019-11-25 08:46:11,321 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-25 08:46:11,322 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 6 [2019-11-25 08:46:11,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:46:11,331 INFO L225 Difference]: With dead ends: 22 [2019-11-25 08:46:11,331 INFO L226 Difference]: Without dead ends: 10 [2019-11-25 08:46:11,333 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 [2019-11-25 08:46:11,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2019-11-25 08:46:11,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2019-11-25 08:46:11,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2019-11-25 08:46:11,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 11 transitions. [2019-11-25 08:46:11,365 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 11 transitions. Word has length 6 [2019-11-25 08:46:11,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:46:11,365 INFO L462 AbstractCegarLoop]: Abstraction has 10 states and 11 transitions. [2019-11-25 08:46:11,365 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-25 08:46:11,366 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 11 transitions. [2019-11-25 08:46:11,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-25 08:46:11,366 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:46:11,367 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:46:11,367 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:46:11,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:46:11,368 INFO L82 PathProgramCache]: Analyzing trace with hash 642088082, now seen corresponding path program 1 times [2019-11-25 08:46:11,368 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:46:11,368 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415730275] [2019-11-25 08:46:11,369 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:46:11,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:46:11,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:46:11,438 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:46:11,438 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-25 08:46:11,461 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 08:46:11 BoogieIcfgContainer [2019-11-25 08:46:11,461 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-25 08:46:11,462 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-25 08:46:11,462 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-25 08:46:11,462 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-25 08:46:11,463 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:46:11" (3/4) ... [2019-11-25 08:46:11,466 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-25 08:46:11,466 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-25 08:46:11,468 INFO L168 Benchmark]: Toolchain (without parser) took 999.14 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 173.5 MB). Free memory was 950.1 MB in the beginning and 1.1 GB in the end (delta: -178.3 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:46:11,469 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:46:11,469 INFO L168 Benchmark]: CACSL2BoogieTranslator took 279.11 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 173.5 MB). Free memory was 950.1 MB in the beginning and 1.2 GB in the end (delta: -219.6 MB). Peak memory consumption was 23.2 MB. Max. memory is 11.5 GB. [2019-11-25 08:46:11,470 INFO L168 Benchmark]: Boogie Procedure Inliner took 38.06 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:46:11,471 INFO L168 Benchmark]: Boogie Preprocessor took 45.27 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2019-11-25 08:46:11,471 INFO L168 Benchmark]: RCFGBuilder took 270.58 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: 17.1 MB). Peak memory consumption was 17.1 MB. Max. memory is 11.5 GB. [2019-11-25 08:46:11,472 INFO L168 Benchmark]: TraceAbstraction took 355.31 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 21.5 MB). Peak memory consumption was 21.5 MB. Max. memory is 11.5 GB. [2019-11-25 08:46:11,472 INFO L168 Benchmark]: Witness Printer took 4.35 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. [2019-11-25 08:46:11,475 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 279.11 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 173.5 MB). Free memory was 950.1 MB in the beginning and 1.2 GB in the end (delta: -219.6 MB). Peak memory consumption was 23.2 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 38.06 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 45.27 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 270.58 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: 17.1 MB). Peak memory consumption was 17.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 355.31 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 21.5 MB). Peak memory consumption was 21.5 MB. Max. memory is 11.5 GB. * Witness Printer took 4.35 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 7]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 44, overapproximation of someBinaryArithmeticFLOAToperation at line 30. Possible FailurePath: [L9] float pi = 3.14159 ; VAL [pi=314159/100000] [L15] float x = __VERIFIER_nondet_float() ; [L16] float octant = pi/3 ; [L18] float oddExp = x ; [L19] float evenExp = 1.0 ; [L20] float term = x ; [L21] unsigned int count = 2 ; [L22] int multFactor = 0 ; [L23] int temp ; VAL [pi=314159/100000] [L25] COND TRUE 1 [L27] term = term * (x/count) VAL [pi=314159/100000] [L28] EXPR (count>>1 % 2 == 0) ? 1 : -1 VAL [pi=314159/100000] [L28] multFactor = (count>>1 % 2 == 0) ? 1 : -1 [L30] evenExp = evenExp + multFactor*term [L32] count++ [L34] term = term * (x/count) [L36] oddExp = oddExp + multFactor*term [L38] count++ [L40] temp = __VERIFIER_nondet_int() [L41] COND TRUE temp == 0 VAL [pi=314159/100000] [L7] COND TRUE !(cond) VAL [pi=314159/100000] [L7] __VERIFIER_error() VAL [pi=314159/100000] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 14 locations, 1 error locations. Result: UNSAFE, OverallTime: 0.3s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 15 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=14occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 15 NumberOfCodeBlocks, 15 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 5 ConstructedInterpolants, 0 QuantifiedInterpolants, 25 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.24-6b5699a [2019-11-25 08:46:13,381 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-25 08:46:13,383 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-25 08:46:13,398 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-25 08:46:13,399 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-25 08:46:13,400 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-25 08:46:13,402 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-25 08:46:13,409 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-25 08:46:13,411 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-25 08:46:13,412 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-25 08:46:13,413 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-25 08:46:13,414 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-25 08:46:13,414 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-25 08:46:13,415 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-25 08:46:13,416 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-25 08:46:13,417 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-25 08:46:13,421 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-25 08:46:13,425 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-25 08:46:13,427 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-25 08:46:13,429 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-25 08:46:13,431 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-25 08:46:13,433 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-25 08:46:13,436 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-25 08:46:13,437 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-25 08:46:13,440 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-25 08:46:13,442 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-25 08:46:13,443 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-25 08:46:13,444 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-25 08:46:13,445 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-25 08:46:13,446 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-25 08:46:13,447 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-25 08:46:13,448 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-25 08:46:13,449 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-25 08:46:13,450 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-25 08:46:13,453 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-25 08:46:13,454 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-25 08:46:13,455 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-25 08:46:13,455 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-25 08:46:13,455 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-25 08:46:13,457 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-25 08:46:13,459 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-25 08:46:13,460 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_93a99d76-b5e9-4b3c-93bc-743ee80e3a0a/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2019-11-25 08:46:13,479 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-25 08:46:13,480 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-25 08:46:13,481 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-25 08:46:13,482 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-25 08:46:13,482 INFO L138 SettingsManager]: * Use SBE=true [2019-11-25 08:46:13,483 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-25 08:46:13,483 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-25 08:46:13,483 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-25 08:46:13,483 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-25 08:46:13,484 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-25 08:46:13,485 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-25 08:46:13,485 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-25 08:46:13,485 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-11-25 08:46:13,486 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-25 08:46:13,486 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-25 08:46:13,486 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-25 08:46:13,487 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-25 08:46:13,487 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-25 08:46:13,487 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-25 08:46:13,487 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-25 08:46:13,488 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-25 08:46:13,488 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-25 08:46:13,488 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-25 08:46:13,488 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-25 08:46:13,489 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-25 08:46:13,489 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-25 08:46:13,489 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-25 08:46:13,490 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-11-25 08:46:13,490 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-25 08:46:13,490 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-25 08:46:13,490 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-25 08:46:13,491 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_93a99d76-b5e9-4b3c-93bc-743ee80e3a0a/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 [2019-11-25 08:46:13,765 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-25 08:46:13,775 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-25 08:46:13,778 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-25 08:46:13,779 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-25 08:46:13,780 INFO L275 PluginConnector]: CDTParser initialized [2019-11-25 08:46:13,780 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_93a99d76-b5e9-4b3c-93bc-743ee80e3a0a/bin/uautomizer/../../sv-benchmarks/c/loop-floats-scientific-comp/loop2-1.c [2019-11-25 08:46:13,831 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_93a99d76-b5e9-4b3c-93bc-743ee80e3a0a/bin/uautomizer/data/02a2e31da/df6b0f387db0487b8dd8dd66faf7dc9d/FLAG93dc62e89 [2019-11-25 08:46:14,225 INFO L306 CDTParser]: Found 1 translation units. [2019-11-25 08:46:14,226 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_93a99d76-b5e9-4b3c-93bc-743ee80e3a0a/sv-benchmarks/c/loop-floats-scientific-comp/loop2-1.c [2019-11-25 08:46:14,231 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_93a99d76-b5e9-4b3c-93bc-743ee80e3a0a/bin/uautomizer/data/02a2e31da/df6b0f387db0487b8dd8dd66faf7dc9d/FLAG93dc62e89 [2019-11-25 08:46:14,243 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_93a99d76-b5e9-4b3c-93bc-743ee80e3a0a/bin/uautomizer/data/02a2e31da/df6b0f387db0487b8dd8dd66faf7dc9d [2019-11-25 08:46:14,246 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-25 08:46:14,247 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-25 08:46:14,248 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-25 08:46:14,249 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-25 08:46:14,252 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-25 08:46:14,252 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:46:14" (1/1) ... [2019-11-25 08:46:14,255 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61677559 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:46:14, skipping insertion in model container [2019-11-25 08:46:14,255 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:46:14" (1/1) ... [2019-11-25 08:46:14,262 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-25 08:46:14,277 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-25 08:46:14,437 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:46:14,442 INFO L201 MainTranslator]: Completed pre-run [2019-11-25 08:46:14,460 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:46:14,476 INFO L205 MainTranslator]: Completed translation [2019-11-25 08:46:14,476 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:46:14 WrapperNode [2019-11-25 08:46:14,476 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-25 08:46:14,477 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-25 08:46:14,477 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-25 08:46:14,479 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-25 08:46:14,486 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:46:14" (1/1) ... [2019-11-25 08:46:14,493 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:46:14" (1/1) ... [2019-11-25 08:46:14,560 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-25 08:46:14,560 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-25 08:46:14,560 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-25 08:46:14,561 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-25 08:46:14,567 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:46:14" (1/1) ... [2019-11-25 08:46:14,567 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:46:14" (1/1) ... [2019-11-25 08:46:14,574 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:46:14" (1/1) ... [2019-11-25 08:46:14,574 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:46:14" (1/1) ... [2019-11-25 08:46:14,580 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:46:14" (1/1) ... [2019-11-25 08:46:14,583 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:46:14" (1/1) ... [2019-11-25 08:46:14,594 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:46:14" (1/1) ... [2019-11-25 08:46:14,597 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-25 08:46:14,600 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-25 08:46:14,600 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-25 08:46:14,600 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-25 08:46:14,601 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:46:14" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_93a99d76-b5e9-4b3c-93bc-743ee80e3a0a/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 [2019-11-25 08:46:14,646 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-25 08:46:14,646 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-25 08:46:18,636 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-25 08:46:18,636 INFO L284 CfgBuilder]: Removed 7 assume(true) statements. [2019-11-25 08:46:18,637 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:46:18 BoogieIcfgContainer [2019-11-25 08:46:18,637 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-25 08:46:18,638 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-25 08:46:18,638 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-25 08:46:18,641 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-25 08:46:18,641 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 08:46:14" (1/3) ... [2019-11-25 08:46:18,642 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36adeb74 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:46:18, skipping insertion in model container [2019-11-25 08:46:18,642 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:46:14" (2/3) ... [2019-11-25 08:46:18,642 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36adeb74 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:46:18, skipping insertion in model container [2019-11-25 08:46:18,643 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:46:18" (3/3) ... [2019-11-25 08:46:18,644 INFO L109 eAbstractionObserver]: Analyzing ICFG loop2-1.c [2019-11-25 08:46:18,651 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-25 08:46:18,657 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-25 08:46:18,665 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-25 08:46:18,681 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-25 08:46:18,682 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-25 08:46:18,682 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-25 08:46:18,682 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-25 08:46:18,682 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-25 08:46:18,682 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-25 08:46:18,683 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-25 08:46:18,683 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-25 08:46:18,695 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states. [2019-11-25 08:46:18,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-11-25 08:46:18,700 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:46:18,700 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-11-25 08:46:18,700 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:46:18,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:46:18,705 INFO L82 PathProgramCache]: Analyzing trace with hash 890122407, now seen corresponding path program 1 times [2019-11-25 08:46:18,713 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-25 08:46:18,713 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [990235185] [2019-11-25 08:46:18,714 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_93a99d76-b5e9-4b3c-93bc-743ee80e3a0a/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 [2019-11-25 08:46:18,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:46:18,865 INFO L255 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 1 conjunts are in the unsatisfiable core [2019-11-25 08:46:18,871 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:46:18,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:46:18,881 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-25 08:46:18,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:46:18,884 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [990235185] [2019-11-25 08:46:18,885 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:46:18,885 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-11-25 08:46:18,887 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498899613] [2019-11-25 08:46:18,890 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-25 08:46:18,890 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-25 08:46:18,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-25 08:46:18,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-25 08:46:18,901 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 2 states. [2019-11-25 08:46:18,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:46:18,916 INFO L93 Difference]: Finished difference Result 22 states and 26 transitions. [2019-11-25 08:46:18,916 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-25 08:46:18,918 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 6 [2019-11-25 08:46:18,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:46:18,925 INFO L225 Difference]: With dead ends: 22 [2019-11-25 08:46:18,925 INFO L226 Difference]: Without dead ends: 10 [2019-11-25 08:46:18,928 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 [2019-11-25 08:46:18,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2019-11-25 08:46:18,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2019-11-25 08:46:18,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2019-11-25 08:46:18,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 11 transitions. [2019-11-25 08:46:18,954 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 11 transitions. Word has length 6 [2019-11-25 08:46:18,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:46:18,954 INFO L462 AbstractCegarLoop]: Abstraction has 10 states and 11 transitions. [2019-11-25 08:46:18,954 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-25 08:46:18,954 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 11 transitions. [2019-11-25 08:46:18,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-25 08:46:18,955 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:46:18,955 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:46:19,177 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2019-11-25 08:46:19,178 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:46:19,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:46:19,178 INFO L82 PathProgramCache]: Analyzing trace with hash 642088082, now seen corresponding path program 1 times [2019-11-25 08:46:19,179 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-25 08:46:19,179 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [447714479] [2019-11-25 08:46:19,179 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_93a99d76-b5e9-4b3c-93bc-743ee80e3a0a/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 [2019-11-25 08:46:19,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:46:20,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:46:20,634 INFO L174 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2019-11-25 08:46:20,635 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-25 08:46:20,837 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2019-11-25 08:46:20,890 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 08:46:20 BoogieIcfgContainer [2019-11-25 08:46:20,890 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-25 08:46:20,890 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-25 08:46:20,890 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-25 08:46:20,891 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-25 08:46:20,891 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:46:18" (3/4) ... [2019-11-25 08:46:20,893 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-25 08:46:20,935 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_93a99d76-b5e9-4b3c-93bc-743ee80e3a0a/bin/uautomizer/witness.graphml [2019-11-25 08:46:20,936 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-25 08:46:20,938 INFO L168 Benchmark]: Toolchain (without parser) took 6689.85 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 174.1 MB). Free memory was 961.8 MB in the beginning and 1.1 GB in the end (delta: -143.7 MB). Peak memory consumption was 30.3 MB. Max. memory is 11.5 GB. [2019-11-25 08:46:20,938 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 1.0 GB. Free memory is still 987.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:46:20,939 INFO L168 Benchmark]: CACSL2BoogieTranslator took 228.30 ms. Allocated memory is still 1.0 GB. Free memory was 961.8 MB in the beginning and 949.7 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 11.5 GB. [2019-11-25 08:46:20,939 INFO L168 Benchmark]: Boogie Procedure Inliner took 83.28 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 174.1 MB). Free memory was 949.7 MB in the beginning and 1.2 GB in the end (delta: -221.0 MB). Peak memory consumption was 15.5 MB. Max. memory is 11.5 GB. [2019-11-25 08:46:20,940 INFO L168 Benchmark]: Boogie Preprocessor took 39.15 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 6.4 MB). Peak memory consumption was 6.4 MB. Max. memory is 11.5 GB. [2019-11-25 08:46:20,940 INFO L168 Benchmark]: RCFGBuilder took 4037.37 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: 14.8 MB). Peak memory consumption was 14.8 MB. Max. memory is 11.5 GB. [2019-11-25 08:46:20,941 INFO L168 Benchmark]: TraceAbstraction took 2251.91 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: 31.0 MB). Peak memory consumption was 31.0 MB. Max. memory is 11.5 GB. [2019-11-25 08:46:20,941 INFO L168 Benchmark]: Witness Printer took 45.59 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: 6.4 MB). Peak memory consumption was 6.4 MB. Max. memory is 11.5 GB. [2019-11-25 08:46:20,943 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 1.0 GB. Free memory is still 987.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 228.30 ms. Allocated memory is still 1.0 GB. Free memory was 961.8 MB in the beginning and 949.7 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 83.28 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 174.1 MB). Free memory was 949.7 MB in the beginning and 1.2 GB in the end (delta: -221.0 MB). Peak memory consumption was 15.5 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 39.15 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 6.4 MB). Peak memory consumption was 6.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 4037.37 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: 14.8 MB). Peak memory consumption was 14.8 MB. Max. memory is 11.5 GB. * TraceAbstraction took 2251.91 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: 31.0 MB). Peak memory consumption was 31.0 MB. Max. memory is 11.5 GB. * Witness Printer took 45.59 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: 6.4 MB). Peak memory consumption was 6.4 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 [pi=3.141590118408203] [L15] float x = __VERIFIER_nondet_float() ; [L16] float octant = pi/3 ; [L18] float oddExp = x ; [L19] float evenExp = 1.0 ; [L20] float term = x ; [L21] unsigned int count = 2 ; [L22] int multFactor = 0 ; [L23] int temp ; VAL [pi=3.141590118408203] [L25] COND TRUE 1 [L27] term = term * (x/count) VAL [pi=3.141590118408203] [L28] EXPR (count>>1 % 2 == 0) ? 1 : -1 VAL [pi=3.141590118408203] [L28] multFactor = (count>>1 % 2 == 0) ? 1 : -1 [L30] evenExp = evenExp + multFactor*term [L32] count++ [L34] term = term * (x/count) [L36] oddExp = oddExp + multFactor*term [L38] count++ [L40] temp = __VERIFIER_nondet_int() [L41] COND TRUE temp == 0 VAL [pi=3.141590118408203] [L7] COND TRUE !(cond) VAL [pi=3.141590118408203] [L7] __VERIFIER_error() VAL [pi=3.141590118408203] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 14 locations, 1 error locations. Result: UNSAFE, OverallTime: 2.2s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 15 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=14occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 15 NumberOfCodeBlocks, 15 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 50 SizeOfPredicates, 0 NumberOfNonLiveVariables, 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...