./Ultimate.py --spec /storage/repos/svcomp/c/properties/unreach-call.prp --file /storage/repos/svcomp/c/loop-floats-scientific-comp/loop1_false-unreach-call.c.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 91b1670e Calling Ultimate with: java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/svcomp/c/loop-floats-scientific-comp/loop1_false-unreach-call.c.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 34606649fc24a0c6046cbbdfba3b9ddb6bb91120 ................................................................................................................................................................................................................................................................................ Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/svcomp/c/loop-floats-scientific-comp/loop1_false-unreach-call.c.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 34606649fc24a0c6046cbbdfba3b9ddb6bb91120 ...................................................................................................................................................................................................................................................................................... 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 0.1.24-91b1670 [2018-11-28 18:05:27,058 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-28 18:05:27,061 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-28 18:05:27,079 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-28 18:05:27,080 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-28 18:05:27,084 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-28 18:05:27,086 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-28 18:05:27,091 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-28 18:05:27,096 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-28 18:05:27,099 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-28 18:05:27,101 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-28 18:05:27,102 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-28 18:05:27,104 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-28 18:05:27,105 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-28 18:05:27,112 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-28 18:05:27,113 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-28 18:05:27,114 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-28 18:05:27,121 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-28 18:05:27,125 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-28 18:05:27,128 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-28 18:05:27,130 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-28 18:05:27,133 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-28 18:05:27,138 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-28 18:05:27,141 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-28 18:05:27,141 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-28 18:05:27,142 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-28 18:05:27,143 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-28 18:05:27,148 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-28 18:05:27,150 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-28 18:05:27,152 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-28 18:05:27,152 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-28 18:05:27,153 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-28 18:05:27,153 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-28 18:05:27,153 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-28 18:05:27,156 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-28 18:05:27,157 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-28 18:05:27,157 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-11-28 18:05:27,180 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-28 18:05:27,181 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-28 18:05:27,182 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-28 18:05:27,183 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-28 18:05:27,184 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-28 18:05:27,185 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-28 18:05:27,185 INFO L133 SettingsManager]: * Use SBE=true [2018-11-28 18:05:27,185 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-28 18:05:27,186 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-28 18:05:27,186 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-28 18:05:27,186 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-28 18:05:27,186 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-28 18:05:27,186 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-28 18:05:27,186 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-28 18:05:27,188 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-28 18:05:27,188 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-28 18:05:27,188 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-28 18:05:27,189 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-28 18:05:27,190 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-28 18:05:27,190 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-28 18:05:27,191 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-28 18:05:27,191 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-28 18:05:27,191 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-28 18:05:27,191 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-28 18:05:27,191 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-28 18:05:27,191 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-28 18:05:27,193 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-28 18:05:27,193 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-28 18:05:27,193 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-28 18:05:27,193 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-28 18:05:27,193 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux 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 -> 34606649fc24a0c6046cbbdfba3b9ddb6bb91120 [2018-11-28 18:05:27,248 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-28 18:05:27,263 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-28 18:05:27,268 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-28 18:05:27,270 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-28 18:05:27,270 INFO L276 PluginConnector]: CDTParser initialized [2018-11-28 18:05:27,271 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/loop-floats-scientific-comp/loop1_false-unreach-call.c.i [2018-11-28 18:05:27,346 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c4a6f42f5/fd2462737470408283bdb27a54409a3e/FLAG61230dc00 [2018-11-28 18:05:27,844 INFO L307 CDTParser]: Found 1 translation units. [2018-11-28 18:05:27,845 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/loop-floats-scientific-comp/loop1_false-unreach-call.c.i [2018-11-28 18:05:27,852 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c4a6f42f5/fd2462737470408283bdb27a54409a3e/FLAG61230dc00 [2018-11-28 18:05:28,199 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c4a6f42f5/fd2462737470408283bdb27a54409a3e [2018-11-28 18:05:28,203 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-28 18:05:28,205 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-28 18:05:28,206 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-28 18:05:28,206 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-28 18:05:28,211 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-28 18:05:28,212 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 06:05:28" (1/1) ... [2018-11-28 18:05:28,217 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b1b49a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:05:28, skipping insertion in model container [2018-11-28 18:05:28,218 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 06:05:28" (1/1) ... [2018-11-28 18:05:28,227 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-28 18:05:28,251 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-28 18:05:28,449 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 18:05:28,455 INFO L191 MainTranslator]: Completed pre-run [2018-11-28 18:05:28,476 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 18:05:28,493 INFO L195 MainTranslator]: Completed translation [2018-11-28 18:05:28,493 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:05:28 WrapperNode [2018-11-28 18:05:28,494 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-28 18:05:28,495 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-28 18:05:28,495 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-28 18:05:28,495 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-28 18:05:28,505 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:05:28" (1/1) ... [2018-11-28 18:05:28,512 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:05:28" (1/1) ... [2018-11-28 18:05:28,520 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-28 18:05:28,521 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-28 18:05:28,521 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-28 18:05:28,521 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-28 18:05:28,533 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:05:28" (1/1) ... [2018-11-28 18:05:28,533 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:05:28" (1/1) ... [2018-11-28 18:05:28,534 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:05:28" (1/1) ... [2018-11-28 18:05:28,534 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:05:28" (1/1) ... [2018-11-28 18:05:28,540 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:05:28" (1/1) ... [2018-11-28 18:05:28,546 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:05:28" (1/1) ... [2018-11-28 18:05:28,547 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:05:28" (1/1) ... [2018-11-28 18:05:28,548 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-28 18:05:28,549 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-28 18:05:28,549 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-28 18:05:28,549 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-28 18:05:28,550 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:05:28" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-28 18:05:28,719 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-28 18:05:28,721 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-28 18:05:28,722 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-28 18:05:28,722 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-28 18:05:28,722 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-28 18:05:28,722 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-28 18:05:28,722 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-11-28 18:05:28,722 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-11-28 18:05:29,033 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-28 18:05:29,033 INFO L280 CfgBuilder]: Removed 1 assue(true) statements. [2018-11-28 18:05:29,034 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 06:05:29 BoogieIcfgContainer [2018-11-28 18:05:29,034 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-28 18:05:29,035 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-28 18:05:29,035 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-28 18:05:29,038 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-28 18:05:29,039 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 06:05:28" (1/3) ... [2018-11-28 18:05:29,040 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@98a3e53 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 06:05:29, skipping insertion in model container [2018-11-28 18:05:29,040 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:05:28" (2/3) ... [2018-11-28 18:05:29,041 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@98a3e53 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 06:05:29, skipping insertion in model container [2018-11-28 18:05:29,041 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 06:05:29" (3/3) ... [2018-11-28 18:05:29,044 INFO L112 eAbstractionObserver]: Analyzing ICFG loop1_false-unreach-call.c.i [2018-11-28 18:05:29,057 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-28 18:05:29,071 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-28 18:05:29,098 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-28 18:05:29,136 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-28 18:05:29,137 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-28 18:05:29,138 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-28 18:05:29,138 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-28 18:05:29,138 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-28 18:05:29,139 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-28 18:05:29,139 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-28 18:05:29,139 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-28 18:05:29,139 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-28 18:05:29,159 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2018-11-28 18:05:29,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-11-28 18:05:29,167 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:05:29,168 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 18:05:29,171 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:05:29,178 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:05:29,179 INFO L82 PathProgramCache]: Analyzing trace with hash -722424895, now seen corresponding path program 1 times [2018-11-28 18:05:29,182 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 18:05:29,182 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 18:05:29,239 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:05:29,240 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:05:29,240 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:05:29,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:05:29,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 18:05:29,306 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 18:05:29,309 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-28 18:05:29,314 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-28 18:05:29,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-28 18:05:29,331 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-28 18:05:29,336 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 2 states. [2018-11-28 18:05:29,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:05:29,374 INFO L93 Difference]: Finished difference Result 31 states and 35 transitions. [2018-11-28 18:05:29,374 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-28 18:05:29,376 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2018-11-28 18:05:29,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:05:29,388 INFO L225 Difference]: With dead ends: 31 [2018-11-28 18:05:29,389 INFO L226 Difference]: Without dead ends: 12 [2018-11-28 18:05:29,393 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-28 18:05:29,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2018-11-28 18:05:29,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2018-11-28 18:05:29,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2018-11-28 18:05:29,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2018-11-28 18:05:29,430 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 10 [2018-11-28 18:05:29,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:05:29,430 INFO L480 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2018-11-28 18:05:29,430 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-28 18:05:29,431 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2018-11-28 18:05:29,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-11-28 18:05:29,432 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:05:29,432 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 18:05:29,432 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:05:29,433 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:05:29,434 INFO L82 PathProgramCache]: Analyzing trace with hash -1142459876, now seen corresponding path program 1 times [2018-11-28 18:05:29,434 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 18:05:29,434 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 18:05:29,436 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:05:29,436 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:05:29,436 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 18:05:29,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 18:05:29,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 18:05:29,497 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-11-28 18:05:29,527 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 06:05:29 BoogieIcfgContainer [2018-11-28 18:05:29,528 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-28 18:05:29,528 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-28 18:05:29,528 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-28 18:05:29,528 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-28 18:05:29,529 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 06:05:29" (3/4) ... [2018-11-28 18:05:29,535 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-11-28 18:05:29,535 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-28 18:05:29,536 INFO L168 Benchmark]: Toolchain (without parser) took 1332.24 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.0 MB). Free memory was 947.3 MB in the beginning and 1.1 GB in the end (delta: -149.3 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 18:05:29,539 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 972.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 18:05:29,540 INFO L168 Benchmark]: CACSL2BoogieTranslator took 287.82 ms. Allocated memory is still 1.0 GB. Free memory was 947.3 MB in the beginning and 936.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-28 18:05:29,541 INFO L168 Benchmark]: Boogie Procedure Inliner took 25.90 ms. Allocated memory is still 1.0 GB. Free memory is still 936.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 18:05:29,541 INFO L168 Benchmark]: Boogie Preprocessor took 27.68 ms. Allocated memory is still 1.0 GB. Free memory is still 936.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 18:05:29,542 INFO L168 Benchmark]: RCFGBuilder took 485.07 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.0 MB). Free memory was 936.6 MB in the beginning and 1.1 GB in the end (delta: -182.2 MB). Peak memory consumption was 24.7 MB. Max. memory is 11.5 GB. [2018-11-28 18:05:29,544 INFO L168 Benchmark]: TraceAbstraction took 493.12 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: 22.1 MB). Peak memory consumption was 22.1 MB. Max. memory is 11.5 GB. [2018-11-28 18:05:29,545 INFO L168 Benchmark]: Witness Printer took 6.97 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 18:05:29,550 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 972.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 287.82 ms. Allocated memory is still 1.0 GB. Free memory was 947.3 MB in the beginning and 936.6 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 25.90 ms. Allocated memory is still 1.0 GB. Free memory is still 936.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 27.68 ms. Allocated memory is still 1.0 GB. Free memory is still 936.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 485.07 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.0 MB). Free memory was 936.6 MB in the beginning and 1.1 GB in the end (delta: -182.2 MB). Peak memory consumption was 24.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 493.12 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: 22.1 MB). Peak memory consumption was 22.1 MB. Max. memory is 11.5 GB. * Witness Printer took 6.97 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: 8]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 32, overapproximation of someBinaryArithmeticFLOAToperation at line 24. Possible FailurePath: [L15] float x = __VERIFIER_nondet_float() ; [L16] float exp = 1.0 ; [L17] float term = 1.0 ; [L18] unsigned int count = 1 ; [L19] float result = 2*(1/(1-x)) ; [L20] int temp ; VAL [count=1, exp=1, term=1, x=2] [L22] COND TRUE 1 [L24] term = term * (x/count) [L25] exp = exp + term [L26] count++ [L28] temp = __VERIFIER_nondet_int() [L29] COND TRUE temp ==0 VAL [count=2, temp=0, x=2] [L32] CALL __VERIFIER_assert( result >= exp ) VAL [\old(cond)=0] [L8] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L8] __VERIFIER_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 19 locations, 1 error locations. UNSAFE Result, 0.3s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 19 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=19occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 21 NumberOfCodeBlocks, 21 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 81 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.24-91b1670 [2018-11-28 18:05:31,960 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-28 18:05:31,967 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-28 18:05:31,987 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-28 18:05:31,988 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-28 18:05:31,990 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-28 18:05:31,992 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-28 18:05:31,997 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-28 18:05:32,001 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-28 18:05:32,004 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-28 18:05:32,006 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-28 18:05:32,007 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-28 18:05:32,008 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-28 18:05:32,009 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-28 18:05:32,010 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-28 18:05:32,011 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-28 18:05:32,012 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-28 18:05:32,014 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-28 18:05:32,016 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-28 18:05:32,018 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-28 18:05:32,019 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-28 18:05:32,020 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-28 18:05:32,023 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-28 18:05:32,024 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-28 18:05:32,024 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-28 18:05:32,025 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-28 18:05:32,026 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-28 18:05:32,027 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-28 18:05:32,028 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-28 18:05:32,030 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-28 18:05:32,030 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-28 18:05:32,030 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-28 18:05:32,031 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-28 18:05:32,031 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-28 18:05:32,032 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-28 18:05:32,033 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-28 18:05:32,033 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2018-11-28 18:05:32,049 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-28 18:05:32,049 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-28 18:05:32,051 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-28 18:05:32,051 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-28 18:05:32,052 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-28 18:05:32,052 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-28 18:05:32,052 INFO L133 SettingsManager]: * Use SBE=true [2018-11-28 18:05:32,052 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-28 18:05:32,053 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-28 18:05:32,053 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-28 18:05:32,053 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-28 18:05:32,053 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-28 18:05:32,053 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-28 18:05:32,053 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-28 18:05:32,054 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-11-28 18:05:32,054 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-11-28 18:05:32,054 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-28 18:05:32,054 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-28 18:05:32,054 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-28 18:05:32,054 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-28 18:05:32,056 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-28 18:05:32,056 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-28 18:05:32,057 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-28 18:05:32,057 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-28 18:05:32,057 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-28 18:05:32,057 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-28 18:05:32,057 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-28 18:05:32,057 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-28 18:05:32,058 INFO L133 SettingsManager]: * Trace refinement strategy=WOLF [2018-11-28 18:05:32,059 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-28 18:05:32,059 INFO L133 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2018-11-28 18:05:32,059 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-11-28 18:05:32,059 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux 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 -> 34606649fc24a0c6046cbbdfba3b9ddb6bb91120 [2018-11-28 18:05:32,106 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-28 18:05:32,118 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-28 18:05:32,122 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-28 18:05:32,124 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-28 18:05:32,124 INFO L276 PluginConnector]: CDTParser initialized [2018-11-28 18:05:32,124 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/loop-floats-scientific-comp/loop1_false-unreach-call.c.i [2018-11-28 18:05:32,186 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/29ce7c00c/b2cdf3d2b2cf49469daf36f8470f4b81/FLAG8bcc3a9c2 [2018-11-28 18:05:32,622 INFO L307 CDTParser]: Found 1 translation units. [2018-11-28 18:05:32,622 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/loop-floats-scientific-comp/loop1_false-unreach-call.c.i [2018-11-28 18:05:32,628 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/29ce7c00c/b2cdf3d2b2cf49469daf36f8470f4b81/FLAG8bcc3a9c2 [2018-11-28 18:05:33,015 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/29ce7c00c/b2cdf3d2b2cf49469daf36f8470f4b81 [2018-11-28 18:05:33,019 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-28 18:05:33,020 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-28 18:05:33,022 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-28 18:05:33,022 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-28 18:05:33,026 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-28 18:05:33,027 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 06:05:33" (1/1) ... [2018-11-28 18:05:33,033 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d71f071 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:05:33, skipping insertion in model container [2018-11-28 18:05:33,033 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 06:05:33" (1/1) ... [2018-11-28 18:05:33,042 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-28 18:05:33,065 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-28 18:05:33,322 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 18:05:33,332 INFO L191 MainTranslator]: Completed pre-run [2018-11-28 18:05:33,358 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 18:05:33,380 INFO L195 MainTranslator]: Completed translation [2018-11-28 18:05:33,380 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:05:33 WrapperNode [2018-11-28 18:05:33,381 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-28 18:05:33,382 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-28 18:05:33,382 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-28 18:05:33,382 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-28 18:05:33,393 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:05:33" (1/1) ... [2018-11-28 18:05:33,403 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:05:33" (1/1) ... [2018-11-28 18:05:33,412 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-28 18:05:33,413 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-28 18:05:33,413 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-28 18:05:33,414 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-28 18:05:33,426 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:05:33" (1/1) ... [2018-11-28 18:05:33,426 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:05:33" (1/1) ... [2018-11-28 18:05:33,428 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:05:33" (1/1) ... [2018-11-28 18:05:33,429 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:05:33" (1/1) ... [2018-11-28 18:05:33,438 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:05:33" (1/1) ... [2018-11-28 18:05:33,444 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:05:33" (1/1) ... [2018-11-28 18:05:33,445 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:05:33" (1/1) ... [2018-11-28 18:05:33,449 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-28 18:05:33,449 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-28 18:05:33,449 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-28 18:05:33,450 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-28 18:05:33,451 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:05:33" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-28 18:05:33,606 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-28 18:05:33,607 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-28 18:05:33,607 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-28 18:05:33,607 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-28 18:05:33,607 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-28 18:05:33,607 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-28 18:05:33,607 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-11-28 18:05:33,608 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-11-28 18:05:37,614 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-28 18:05:37,615 INFO L280 CfgBuilder]: Removed 1 assue(true) statements. [2018-11-28 18:05:37,615 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 06:05:37 BoogieIcfgContainer [2018-11-28 18:05:37,615 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-28 18:05:37,616 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-28 18:05:37,616 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-28 18:05:37,620 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-28 18:05:37,621 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 06:05:33" (1/3) ... [2018-11-28 18:05:37,622 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4128bcbf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 06:05:37, skipping insertion in model container [2018-11-28 18:05:37,622 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 06:05:33" (2/3) ... [2018-11-28 18:05:37,622 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4128bcbf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 06:05:37, skipping insertion in model container [2018-11-28 18:05:37,623 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 06:05:37" (3/3) ... [2018-11-28 18:05:37,626 INFO L112 eAbstractionObserver]: Analyzing ICFG loop1_false-unreach-call.c.i [2018-11-28 18:05:37,637 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-28 18:05:37,645 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-28 18:05:37,661 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-28 18:05:37,694 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-28 18:05:37,694 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-28 18:05:37,695 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-28 18:05:37,695 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-28 18:05:37,695 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-28 18:05:37,696 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-28 18:05:37,696 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-28 18:05:37,696 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-28 18:05:37,696 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-28 18:05:37,715 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2018-11-28 18:05:37,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-11-28 18:05:37,721 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:05:37,722 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 18:05:37,724 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:05:37,729 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:05:37,730 INFO L82 PathProgramCache]: Analyzing trace with hash -722424895, now seen corresponding path program 1 times [2018-11-28 18:05:37,734 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 18:05:37,734 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2018-11-28 18:05:37,742 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 18:05:38,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 18:05:38,105 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 18:05:38,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 18:05:38,122 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-28 18:05:38,139 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 18:05:38,139 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-28 18:05:38,144 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-28 18:05:38,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-28 18:05:38,157 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-28 18:05:38,160 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 2 states. [2018-11-28 18:05:38,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 18:05:38,181 INFO L93 Difference]: Finished difference Result 31 states and 35 transitions. [2018-11-28 18:05:38,181 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-28 18:05:38,184 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2018-11-28 18:05:38,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 18:05:38,194 INFO L225 Difference]: With dead ends: 31 [2018-11-28 18:05:38,194 INFO L226 Difference]: Without dead ends: 12 [2018-11-28 18:05:38,198 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-28 18:05:38,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2018-11-28 18:05:38,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2018-11-28 18:05:38,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2018-11-28 18:05:38,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2018-11-28 18:05:38,242 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 10 [2018-11-28 18:05:38,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 18:05:38,243 INFO L480 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2018-11-28 18:05:38,244 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-28 18:05:38,245 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2018-11-28 18:05:38,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-11-28 18:05:38,246 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 18:05:38,246 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 18:05:38,246 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-28 18:05:38,247 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 18:05:38,248 INFO L82 PathProgramCache]: Analyzing trace with hash -1142459876, now seen corresponding path program 1 times [2018-11-28 18:05:38,248 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-28 18:05:38,248 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2018-11-28 18:05:38,259 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2018-11-28 18:05:38,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 18:05:39,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 18:05:39,614 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-11-28 18:05:39,653 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 06:05:39 BoogieIcfgContainer [2018-11-28 18:05:39,653 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-28 18:05:39,655 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-28 18:05:39,656 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-28 18:05:39,656 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-28 18:05:39,657 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 06:05:37" (3/4) ... [2018-11-28 18:05:39,660 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-11-28 18:05:39,707 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2018-11-28 18:05:39,707 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-28 18:05:39,708 INFO L168 Benchmark]: Toolchain (without parser) took 6688.49 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 105.4 MB). Free memory was 951.3 MB in the beginning and 1.1 GB in the end (delta: -99.9 MB). Peak memory consumption was 5.5 MB. Max. memory is 11.5 GB. [2018-11-28 18:05:39,710 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 978.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 18:05:39,710 INFO L168 Benchmark]: CACSL2BoogieTranslator took 360.03 ms. Allocated memory is still 1.0 GB. Free memory was 951.3 MB in the beginning and 940.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-28 18:05:39,712 INFO L168 Benchmark]: Boogie Procedure Inliner took 30.78 ms. Allocated memory is still 1.0 GB. Free memory is still 940.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 18:05:39,712 INFO L168 Benchmark]: Boogie Preprocessor took 35.73 ms. Allocated memory is still 1.0 GB. Free memory was 940.6 MB in the beginning and 935.2 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-11-28 18:05:39,716 INFO L168 Benchmark]: RCFGBuilder took 4166.03 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 105.4 MB). Free memory was 935.2 MB in the beginning and 1.1 GB in the end (delta: -145.6 MB). Peak memory consumption was 19.6 MB. Max. memory is 11.5 GB. [2018-11-28 18:05:39,717 INFO L168 Benchmark]: TraceAbstraction took 2037.10 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: 29.6 MB). Peak memory consumption was 29.6 MB. Max. memory is 11.5 GB. [2018-11-28 18:05:39,720 INFO L168 Benchmark]: Witness Printer took 51.76 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. [2018-11-28 18:05:39,729 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 978.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 360.03 ms. Allocated memory is still 1.0 GB. Free memory was 951.3 MB in the beginning and 940.6 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 30.78 ms. Allocated memory is still 1.0 GB. Free memory is still 940.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 35.73 ms. Allocated memory is still 1.0 GB. Free memory was 940.6 MB in the beginning and 935.2 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 4166.03 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 105.4 MB). Free memory was 935.2 MB in the beginning and 1.1 GB in the end (delta: -145.6 MB). Peak memory consumption was 19.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 2037.10 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: 29.6 MB). Peak memory consumption was 29.6 MB. Max. memory is 11.5 GB. * Witness Printer took 51.76 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: - CounterExampleResult [Line: 8]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L15] float x = __VERIFIER_nondet_float() ; [L16] float exp = 1.0 ; [L17] float term = 1.0 ; [L18] unsigned int count = 1 ; [L19] float result = 2*(1/(1-x)) ; [L20] int temp ; VAL [count=1, exp=1.0, result=-273.0666809082031, term=1.0, x=1.00732421875] [L22] COND TRUE 1 [L24] term = term * (x/count) [L25] exp = exp + term [L26] count++ [L28] temp = __VERIFIER_nondet_int() [L29] COND TRUE temp ==0 VAL [count=2, exp=2.00732421875, result=-273.0666809082031, temp=0, term=1.00732421875, x=1.00732421875] [L32] CALL __VERIFIER_assert( result >= exp ) VAL [\old(cond)=0] [L8] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L8] __VERIFIER_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 19 locations, 1 error locations. UNSAFE Result, 1.9s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 19 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 21 NumberOfCodeBlocks, 21 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 81 SizeOfPredicates, 0 NumberOfNonLiveVariables, 22 ConjunctsInSsa, 1 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...