./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench/freire2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version de1bb103 Calling Ultimate with: /usr/bin/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 ../sv-benchmarks/c/nla-digbench/freire2.c -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 30689778d55a79f9fe352193122f8e3d18bcc1bb ................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/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 ../sv-benchmarks/c/nla-digbench/freire2.c -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 30689778d55a79f9fe352193122f8e3d18bcc1bb ................................................................................................................................................................................................................................................................................................................................... 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-de1bb10 [2019-11-27 13:08:28,634 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-27 13:08:28,636 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-27 13:08:28,648 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-27 13:08:28,648 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-27 13:08:28,650 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-27 13:08:28,651 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-27 13:08:28,653 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-27 13:08:28,655 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-27 13:08:28,658 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-27 13:08:28,659 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-27 13:08:28,667 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-27 13:08:28,667 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-27 13:08:28,670 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-27 13:08:28,672 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-27 13:08:28,673 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-27 13:08:28,674 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-27 13:08:28,675 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-27 13:08:28,676 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-27 13:08:28,678 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-27 13:08:28,680 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-27 13:08:28,681 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-27 13:08:28,682 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-27 13:08:28,683 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-27 13:08:28,685 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-27 13:08:28,685 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-27 13:08:28,686 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-27 13:08:28,686 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-27 13:08:28,687 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-27 13:08:28,688 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-27 13:08:28,688 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-27 13:08:28,689 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-27 13:08:28,690 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-27 13:08:28,691 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-27 13:08:28,692 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-27 13:08:28,692 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-27 13:08:28,693 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-27 13:08:28,693 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-27 13:08:28,693 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-27 13:08:28,694 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-27 13:08:28,695 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-27 13:08:28,696 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-27 13:08:28,710 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-27 13:08:28,711 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-27 13:08:28,712 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-27 13:08:28,712 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-27 13:08:28,712 INFO L138 SettingsManager]: * Use SBE=true [2019-11-27 13:08:28,713 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-27 13:08:28,713 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-27 13:08:28,713 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-27 13:08:28,713 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-27 13:08:28,714 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-27 13:08:28,714 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-27 13:08:28,714 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-27 13:08:28,715 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-27 13:08:28,715 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-27 13:08:28,715 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-27 13:08:28,715 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-27 13:08:28,716 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-27 13:08:28,717 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-27 13:08:28,717 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-27 13:08:28,717 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-27 13:08:28,720 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-27 13:08:28,720 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-27 13:08:28,720 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-27 13:08:28,721 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-27 13:08:28,721 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-27 13:08:28,721 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-27 13:08:28,721 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-27 13:08:28,722 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-27 13:08:28,722 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 -> /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 -> 30689778d55a79f9fe352193122f8e3d18bcc1bb [2019-11-27 13:08:29,030 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-27 13:08:29,043 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-27 13:08:29,047 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-27 13:08:29,048 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-27 13:08:29,049 INFO L275 PluginConnector]: CDTParser initialized [2019-11-27 13:08:29,050 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench/freire2.c [2019-11-27 13:08:29,126 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5675e0229/8c6b2c854bb646269bd6512cbe3e6752/FLAGfbbddc3db [2019-11-27 13:08:29,630 INFO L306 CDTParser]: Found 1 translation units. [2019-11-27 13:08:29,631 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench/freire2.c [2019-11-27 13:08:29,639 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5675e0229/8c6b2c854bb646269bd6512cbe3e6752/FLAGfbbddc3db [2019-11-27 13:08:30,022 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5675e0229/8c6b2c854bb646269bd6512cbe3e6752 [2019-11-27 13:08:30,025 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-27 13:08:30,027 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-27 13:08:30,028 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-27 13:08:30,029 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-27 13:08:30,033 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-27 13:08:30,034 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 01:08:30" (1/1) ... [2019-11-27 13:08:30,037 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@717e9a17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 01:08:30, skipping insertion in model container [2019-11-27 13:08:30,037 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 01:08:30" (1/1) ... [2019-11-27 13:08:30,045 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-27 13:08:30,063 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-27 13:08:30,246 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-27 13:08:30,250 INFO L203 MainTranslator]: Completed pre-run [2019-11-27 13:08:30,275 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-27 13:08:30,305 INFO L208 MainTranslator]: Completed translation [2019-11-27 13:08:30,305 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 01:08:30 WrapperNode [2019-11-27 13:08:30,305 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-27 13:08:30,306 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-27 13:08:30,306 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-27 13:08:30,306 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-27 13:08:30,367 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 01:08:30" (1/1) ... [2019-11-27 13:08:30,376 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 01:08:30" (1/1) ... [2019-11-27 13:08:30,397 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-27 13:08:30,397 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-27 13:08:30,398 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-27 13:08:30,398 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-27 13:08:30,405 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 01:08:30" (1/1) ... [2019-11-27 13:08:30,406 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 01:08:30" (1/1) ... [2019-11-27 13:08:30,407 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 01:08:30" (1/1) ... [2019-11-27 13:08:30,407 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 01:08:30" (1/1) ... [2019-11-27 13:08:30,415 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 01:08:30" (1/1) ... [2019-11-27 13:08:30,420 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 01:08:30" (1/1) ... [2019-11-27 13:08:30,422 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 01:08:30" (1/1) ... [2019-11-27 13:08:30,424 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-27 13:08:30,425 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-27 13:08:30,425 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-27 13:08:30,425 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-27 13:08:30,426 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 01:08:30" (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 [2019-11-27 13:08:30,489 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-27 13:08:30,490 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-27 13:08:30,723 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-27 13:08:30,724 INFO L284 CfgBuilder]: Removed 17 assume(true) statements. [2019-11-27 13:08:30,725 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 01:08:30 BoogieIcfgContainer [2019-11-27 13:08:30,726 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-27 13:08:30,727 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-27 13:08:30,728 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-27 13:08:30,737 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-27 13:08:30,737 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.11 01:08:30" (1/3) ... [2019-11-27 13:08:30,738 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@594cf71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 01:08:30, skipping insertion in model container [2019-11-27 13:08:30,741 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 01:08:30" (2/3) ... [2019-11-27 13:08:30,741 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@594cf71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 01:08:30, skipping insertion in model container [2019-11-27 13:08:30,742 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 01:08:30" (3/3) ... [2019-11-27 13:08:30,747 INFO L109 eAbstractionObserver]: Analyzing ICFG freire2.c [2019-11-27 13:08:30,766 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-27 13:08:30,773 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2019-11-27 13:08:30,795 INFO L249 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2019-11-27 13:08:30,817 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-27 13:08:30,818 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-27 13:08:30,818 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-27 13:08:30,818 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-27 13:08:30,819 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-27 13:08:30,819 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-27 13:08:30,819 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-27 13:08:30,819 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-27 13:08:30,835 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states. [2019-11-27 13:08:30,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-11-27 13:08:30,839 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 13:08:30,840 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-11-27 13:08:30,841 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-27 13:08:30,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 13:08:30,846 INFO L82 PathProgramCache]: Analyzing trace with hash 963340, now seen corresponding path program 1 times [2019-11-27 13:08:30,854 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-27 13:08:30,855 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756395502] [2019-11-27 13:08:30,855 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-27 13:08:30,926 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-27 13:08:30,928 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1546296693] [2019-11-27 13:08:30,928 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-27 13:08:30,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-27 13:08:30,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-27 13:08:30,988 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-27 13:08:30,989 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-27 13:08:31,193 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-27 13:08:31,210 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.11 01:08:31 BoogieIcfgContainer [2019-11-27 13:08:31,211 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-27 13:08:31,211 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-27 13:08:31,212 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-27 13:08:31,212 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-27 13:08:31,213 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 01:08:30" (3/4) ... [2019-11-27 13:08:31,216 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-27 13:08:31,216 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-27 13:08:31,219 INFO L168 Benchmark]: Toolchain (without parser) took 1190.72 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 131.6 MB). Free memory was 957.7 MB in the beginning and 1.1 GB in the end (delta: -126.0 MB). Peak memory consumption was 5.6 MB. Max. memory is 11.5 GB. [2019-11-27 13:08:31,219 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-27 13:08:31,220 INFO L168 Benchmark]: CACSL2BoogieTranslator took 277.48 ms. Allocated memory is still 1.0 GB. Free memory was 957.7 MB in the beginning and 945.6 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 11.5 GB. [2019-11-27 13:08:31,221 INFO L168 Benchmark]: Boogie Procedure Inliner took 91.08 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 131.6 MB). Free memory was 945.6 MB in the beginning and 1.1 GB in the end (delta: -182.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. [2019-11-27 13:08:31,222 INFO L168 Benchmark]: Boogie Preprocessor took 26.82 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: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. [2019-11-27 13:08:31,223 INFO L168 Benchmark]: RCFGBuilder took 301.30 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 19.2 MB). Peak memory consumption was 19.2 MB. Max. memory is 11.5 GB. [2019-11-27 13:08:31,224 INFO L168 Benchmark]: TraceAbstraction took 484.17 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 18.7 MB). Peak memory consumption was 18.7 MB. Max. memory is 11.5 GB. [2019-11-27 13:08:31,225 INFO L168 Benchmark]: Witness Printer took 4.81 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. [2019-11-27 13:08:31,230 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 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 277.48 ms. Allocated memory is still 1.0 GB. Free memory was 957.7 MB in the beginning and 945.6 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 91.08 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 131.6 MB). Free memory was 945.6 MB in the beginning and 1.1 GB in the end (delta: -182.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 26.82 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: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. * RCFGBuilder took 301.30 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 19.2 MB). Peak memory consumption was 19.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 484.17 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 18.7 MB). Peak memory consumption was 18.7 MB. Max. memory is 11.5 GB. * Witness Printer took 4.81 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: 14]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of to_int at line 28. Possible FailurePath: [L20] int r; [L21] double a, x, s; [L22] a = __VERIFIER_nondet_double() [L23] x = a [L24] s = 3.25 [L25] r = 1 [L27] COND TRUE 1 [L12] COND TRUE !(cond) [L14] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 30 locations, 6 error locations. Result: UNSAFE, OverallTime: 0.3s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=30occurred 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: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 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-de1bb10 [2019-11-27 13:08:33,237 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-27 13:08:33,240 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-27 13:08:33,258 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-27 13:08:33,258 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-27 13:08:33,261 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-27 13:08:33,263 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-27 13:08:33,273 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-27 13:08:33,278 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-27 13:08:33,283 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-27 13:08:33,284 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-27 13:08:33,287 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-27 13:08:33,287 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-27 13:08:33,290 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-27 13:08:33,292 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-27 13:08:33,296 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-27 13:08:33,297 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-27 13:08:33,300 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-27 13:08:33,303 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-27 13:08:33,308 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-27 13:08:33,312 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-27 13:08:33,315 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-27 13:08:33,317 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-27 13:08:33,319 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-27 13:08:33,324 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-27 13:08:33,324 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-27 13:08:33,324 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-27 13:08:33,326 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-27 13:08:33,327 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-27 13:08:33,328 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-27 13:08:33,328 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-27 13:08:33,329 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-27 13:08:33,330 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-27 13:08:33,331 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-27 13:08:33,333 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-27 13:08:33,333 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-27 13:08:33,334 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-27 13:08:33,335 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-27 13:08:33,335 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-27 13:08:33,337 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-27 13:08:33,339 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-27 13:08:33,340 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2019-11-27 13:08:33,361 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-27 13:08:33,361 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-27 13:08:33,362 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-27 13:08:33,363 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-27 13:08:33,363 INFO L138 SettingsManager]: * Use SBE=true [2019-11-27 13:08:33,363 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-27 13:08:33,363 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-27 13:08:33,364 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-27 13:08:33,364 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-27 13:08:33,364 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-27 13:08:33,365 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-27 13:08:33,365 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-27 13:08:33,365 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-27 13:08:33,365 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-27 13:08:33,366 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-27 13:08:33,366 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-27 13:08:33,366 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-27 13:08:33,366 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-27 13:08:33,367 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-27 13:08:33,368 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-27 13:08:33,369 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-27 13:08:33,369 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-27 13:08:33,369 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-27 13:08:33,370 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-27 13:08:33,371 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-27 13:08:33,371 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-27 13:08:33,371 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-11-27 13:08:33,371 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-27 13:08:33,372 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-27 13:08:33,373 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-27 13:08:33,373 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 -> /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 -> 30689778d55a79f9fe352193122f8e3d18bcc1bb [2019-11-27 13:08:33,668 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-27 13:08:33,686 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-27 13:08:33,692 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-27 13:08:33,695 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-27 13:08:33,696 INFO L275 PluginConnector]: CDTParser initialized [2019-11-27 13:08:33,697 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench/freire2.c [2019-11-27 13:08:33,761 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/11cffba96/42d631c3606645169d337255f80d2348/FLAGacc8674bd [2019-11-27 13:08:34,219 INFO L306 CDTParser]: Found 1 translation units. [2019-11-27 13:08:34,220 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench/freire2.c [2019-11-27 13:08:34,227 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/11cffba96/42d631c3606645169d337255f80d2348/FLAGacc8674bd [2019-11-27 13:08:34,594 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/11cffba96/42d631c3606645169d337255f80d2348 [2019-11-27 13:08:34,600 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-27 13:08:34,601 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-27 13:08:34,603 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-27 13:08:34,603 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-27 13:08:34,607 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-27 13:08:34,608 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 01:08:34" (1/1) ... [2019-11-27 13:08:34,611 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c0b093e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 01:08:34, skipping insertion in model container [2019-11-27 13:08:34,611 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 01:08:34" (1/1) ... [2019-11-27 13:08:34,619 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-27 13:08:34,637 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-27 13:08:34,823 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-27 13:08:34,834 INFO L203 MainTranslator]: Completed pre-run [2019-11-27 13:08:34,859 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-27 13:08:34,936 INFO L208 MainTranslator]: Completed translation [2019-11-27 13:08:34,937 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 01:08:34 WrapperNode [2019-11-27 13:08:34,937 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-27 13:08:34,938 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-27 13:08:34,938 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-27 13:08:34,939 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-27 13:08:34,949 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 01:08:34" (1/1) ... [2019-11-27 13:08:34,958 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 01:08:34" (1/1) ... [2019-11-27 13:08:34,982 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-27 13:08:34,982 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-27 13:08:34,983 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-27 13:08:34,983 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-27 13:08:34,993 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 01:08:34" (1/1) ... [2019-11-27 13:08:34,993 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 01:08:34" (1/1) ... [2019-11-27 13:08:34,996 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 01:08:34" (1/1) ... [2019-11-27 13:08:34,996 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 01:08:34" (1/1) ... [2019-11-27 13:08:35,004 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 01:08:34" (1/1) ... [2019-11-27 13:08:35,010 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 01:08:34" (1/1) ... [2019-11-27 13:08:35,012 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 01:08:34" (1/1) ... [2019-11-27 13:08:35,015 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-27 13:08:35,016 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-27 13:08:35,016 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-27 13:08:35,017 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-27 13:08:35,018 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 01:08:34" (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 [2019-11-27 13:08:35,073 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-27 13:08:35,074 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-27 13:08:43,852 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-27 13:08:43,853 INFO L284 CfgBuilder]: Removed 17 assume(true) statements. [2019-11-27 13:08:43,854 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 01:08:43 BoogieIcfgContainer [2019-11-27 13:08:43,854 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-27 13:08:43,855 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-27 13:08:43,856 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-27 13:08:43,859 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-27 13:08:43,859 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.11 01:08:34" (1/3) ... [2019-11-27 13:08:43,860 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12b00ec1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 01:08:43, skipping insertion in model container [2019-11-27 13:08:43,860 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 01:08:34" (2/3) ... [2019-11-27 13:08:43,861 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12b00ec1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 01:08:43, skipping insertion in model container [2019-11-27 13:08:43,861 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 01:08:43" (3/3) ... [2019-11-27 13:08:43,862 INFO L109 eAbstractionObserver]: Analyzing ICFG freire2.c [2019-11-27 13:08:43,870 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-27 13:08:43,875 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2019-11-27 13:08:43,886 INFO L249 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2019-11-27 13:08:43,909 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-27 13:08:43,909 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-27 13:08:43,909 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-27 13:08:43,909 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-27 13:08:43,910 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-27 13:08:43,910 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-27 13:08:43,910 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-27 13:08:43,910 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-27 13:08:43,926 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2019-11-27 13:08:43,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-11-27 13:08:43,930 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 13:08:43,931 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-11-27 13:08:43,931 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-27 13:08:43,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 13:08:43,937 INFO L82 PathProgramCache]: Analyzing trace with hash 28699754, now seen corresponding path program 1 times [2019-11-27 13:08:43,948 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-27 13:08:43,949 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [125452072] [2019-11-27 13:08:43,949 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2019-11-27 13:08:44,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-27 13:08:44,086 WARN L253 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-27 13:08:44,090 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-27 13:08:44,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-27 13:08:44,204 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-27 13:08:46,894 WARN L192 SmtUtils]: Spent 789.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2019-11-27 13:08:46,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-27 13:08:46,915 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [125452072] [2019-11-27 13:08:46,916 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-27 13:08:46,916 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2019-11-27 13:08:46,918 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570727933] [2019-11-27 13:08:46,922 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-27 13:08:46,923 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-27 13:08:46,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-27 13:08:46,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2019-11-27 13:08:46,939 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 7 states. [2019-11-27 13:09:07,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-27 13:09:07,801 INFO L93 Difference]: Finished difference Result 67 states and 87 transitions. [2019-11-27 13:09:07,801 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-27 13:09:07,803 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 5 [2019-11-27 13:09:07,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-27 13:09:07,813 INFO L225 Difference]: With dead ends: 67 [2019-11-27 13:09:07,813 INFO L226 Difference]: Without dead ends: 34 [2019-11-27 13:09:07,817 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2019-11-27 13:09:07,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2019-11-27 13:09:07,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 29. [2019-11-27 13:09:07,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2019-11-27 13:09:07,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 29 transitions. [2019-11-27 13:09:07,857 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 29 transitions. Word has length 5 [2019-11-27 13:09:07,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-27 13:09:07,857 INFO L462 AbstractCegarLoop]: Abstraction has 29 states and 29 transitions. [2019-11-27 13:09:07,857 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-27 13:09:07,858 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 29 transitions. [2019-11-27 13:09:07,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-11-27 13:09:07,858 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 13:09:07,858 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-27 13:09:08,059 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2019-11-27 13:09:08,060 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-27 13:09:08,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 13:09:08,061 INFO L82 PathProgramCache]: Analyzing trace with hash 1810815341, now seen corresponding path program 1 times [2019-11-27 13:09:08,062 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-27 13:09:08,062 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [582627129] [2019-11-27 13:09:08,063 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2019-11-27 13:09:09,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-27 13:09:09,186 INFO L255 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-27 13:09:09,187 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-27 13:09:09,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-27 13:09:09,987 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-27 13:09:24,936 WARN L192 SmtUtils]: Spent 3.09 s on a formula simplification that was a NOOP. DAG size: 23 [2019-11-27 13:09:25,535 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ULTIMATE.start_main_~a~0_11 (_ FloatingPoint 11 53))) (= (_ bv0 32) ((_ fp.to_sbv 32) roundTowardZero (let ((.cse0 (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv4 32)) v_ULTIMATE.start_main_~a~0_11))) (fp.sub c_currentRoundingMode .cse0 .cse0))))) is different from false [2019-11-27 13:09:25,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-27 13:09:25,922 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [582627129] [2019-11-27 13:09:25,922 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-27 13:09:25,923 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 8 [2019-11-27 13:09:25,923 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594616412] [2019-11-27 13:09:25,924 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-27 13:09:25,925 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-27 13:09:25,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-27 13:09:25,925 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=30, Unknown=2, NotChecked=10, Total=56 [2019-11-27 13:09:25,925 INFO L87 Difference]: Start difference. First operand 29 states and 29 transitions. Second operand 8 states. [2019-11-27 13:09:33,397 WARN L192 SmtUtils]: Spent 2.63 s on a formula simplification that was a NOOP. DAG size: 14 [2019-11-27 13:09:37,517 WARN L860 $PredicateComparison]: unable to prove that (and (= c_ULTIMATE.start_main_~x~0 c_ULTIMATE.start_main_~a~0) (= (_ bv1 32) c_ULTIMATE.start_main_~r~0) (= (_ bv1 32) (bvadd (bvmul (bvmul (bvmul c_ULTIMATE.start_main_~r~0 (_ bv4 32)) c_ULTIMATE.start_main_~r~0) c_ULTIMATE.start_main_~r~0) (bvmul (_ bv3 32) c_ULTIMATE.start_main_~r~0) ((_ fp.to_sbv 32) roundTowardZero (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv4 32)))) (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse0 c_ULTIMATE.start_main_~x~0) (fp.mul c_currentRoundingMode .cse0 c_ULTIMATE.start_main_~a~0)))) (bvneg (bvmul (bvmul c_ULTIMATE.start_main_~r~0 (_ bv6 32)) c_ULTIMATE.start_main_~r~0)))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2019-11-27 13:10:31,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-27 13:10:31,398 INFO L93 Difference]: Finished difference Result 32 states and 33 transitions. [2019-11-27 13:10:31,436 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-27 13:10:31,436 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 7 [2019-11-27 13:10:31,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-27 13:10:31,437 INFO L225 Difference]: With dead ends: 32 [2019-11-27 13:10:31,438 INFO L226 Difference]: Without dead ends: 29 [2019-11-27 13:10:31,439 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 26.5s TimeCoverageRelationStatistics Valid=23, Invalid=52, Unknown=5, NotChecked=30, Total=110 [2019-11-27 13:10:31,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2019-11-27 13:10:31,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 27. [2019-11-27 13:10:31,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2019-11-27 13:10:31,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2019-11-27 13:10:31,446 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 7 [2019-11-27 13:10:31,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-27 13:10:31,447 INFO L462 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2019-11-27 13:10:31,447 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-27 13:10:31,447 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2019-11-27 13:10:31,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-27 13:10:31,447 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 13:10:31,448 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-27 13:10:31,650 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2019-11-27 13:10:31,651 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-27 13:10:31,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 13:10:31,652 INFO L82 PathProgramCache]: Analyzing trace with hash 731943696, now seen corresponding path program 1 times [2019-11-27 13:10:31,654 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-27 13:10:31,654 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [741235252] [2019-11-27 13:10:31,655 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2019-11-27 13:10:32,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-27 13:10:34,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-27 13:10:34,366 INFO L174 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2019-11-27 13:10:34,366 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-27 13:10:34,567 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2019-11-27 13:10:34,592 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.11 01:10:34 BoogieIcfgContainer [2019-11-27 13:10:34,593 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-27 13:10:34,593 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-27 13:10:34,593 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-27 13:10:34,594 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-27 13:10:34,595 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 01:08:43" (3/4) ... [2019-11-27 13:10:34,606 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-27 13:10:34,656 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-27 13:10:34,657 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-27 13:10:34,659 INFO L168 Benchmark]: Toolchain (without parser) took 120057.38 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 155.7 MB). Free memory was 957.7 MB in the beginning and 1.0 GB in the end (delta: -75.9 MB). Peak memory consumption was 79.8 MB. Max. memory is 11.5 GB. [2019-11-27 13:10:34,659 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-27 13:10:34,660 INFO L168 Benchmark]: CACSL2BoogieTranslator took 334.75 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 155.7 MB). Free memory was 957.7 MB in the beginning and 1.2 GB in the end (delta: -194.4 MB). Peak memory consumption was 20.7 MB. Max. memory is 11.5 GB. [2019-11-27 13:10:34,661 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.03 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: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. [2019-11-27 13:10:34,662 INFO L168 Benchmark]: Boogie Preprocessor took 33.18 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. [2019-11-27 13:10:34,663 INFO L168 Benchmark]: RCFGBuilder took 8838.37 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 25.7 MB). Peak memory consumption was 25.7 MB. Max. memory is 11.5 GB. [2019-11-27 13:10:34,663 INFO L168 Benchmark]: TraceAbstraction took 110737.30 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 79.8 MB). Peak memory consumption was 79.8 MB. Max. memory is 11.5 GB. [2019-11-27 13:10:34,664 INFO L168 Benchmark]: Witness Printer took 63.65 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. [2019-11-27 13:10:34,668 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 334.75 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 155.7 MB). Free memory was 957.7 MB in the beginning and 1.2 GB in the end (delta: -194.4 MB). Peak memory consumption was 20.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 44.03 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: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 33.18 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. * RCFGBuilder took 8838.37 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 25.7 MB). Peak memory consumption was 25.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 110737.30 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 79.8 MB). Peak memory consumption was 79.8 MB. Max. memory is 11.5 GB. * Witness Printer took 63.65 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 14]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L20] int r; [L21] double a, x, s; [L22] a = __VERIFIER_nondet_double() [L23] x = a [L24] s = 3.25 [L25] r = 1 [L27] COND TRUE 1 [L12] COND FALSE !(!(cond)) [L12] COND FALSE !(!(cond)) [L12] COND TRUE !(cond) [L14] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 31 locations, 6 error locations. Result: UNSAFE, OverallTime: 110.6s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 86.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 42 SDtfs, 40 SDslu, 66 SDs, 0 SdLazy, 89 SolverSat, 20 SolverUnsat, 18 SolverUnknown, 0 SolverNotchecked, 73.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 25 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 29.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=31occurred 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, 2 MinimizatonAttempts, 7 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 2.3s SatisfiabilityAnalysisTime, 19.6s InterpolantComputationTime, 21 NumberOfCodeBlocks, 21 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 20 ConstructedInterpolants, 1 QuantifiedInterpolants, 1208 SizeOfPredicates, 11 NumberOfNonLiveVariables, 25 ConjunctsInSsa, 12 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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...