./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-benchs/filter1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9a8b2e8d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -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/float-benchs/filter1.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(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash fbf6cb56c42d2fc851e723344a93d807d314228d ............................................................................................................................................................................................................................................................................ 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 -Xmx15G -Xms4m -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/float-benchs/filter1.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(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash fbf6cb56c42d2fc851e723344a93d807d314228d ........................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN --- Real Ultimate output --- This is Ultimate 0.1.25-9a8b2e8 [2020-10-20 00:17:20,449 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 00:17:20,452 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 00:17:20,477 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 00:17:20,479 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 00:17:20,480 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 00:17:20,483 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 00:17:20,490 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 00:17:20,492 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 00:17:20,496 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 00:17:20,498 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 00:17:20,499 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 00:17:20,501 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 00:17:20,502 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 00:17:20,506 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 00:17:20,507 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 00:17:20,508 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 00:17:20,512 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 00:17:20,515 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 00:17:20,518 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 00:17:20,529 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 00:17:20,530 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 00:17:20,531 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 00:17:20,533 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 00:17:20,538 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 00:17:20,540 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 00:17:20,540 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 00:17:20,542 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 00:17:20,543 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 00:17:20,544 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 00:17:20,544 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 00:17:20,545 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 00:17:20,546 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 00:17:20,548 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 00:17:20,556 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 00:17:20,557 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 00:17:20,558 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 00:17:20,558 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 00:17:20,558 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 00:17:20,559 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 00:17:20,561 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 00:17:20,562 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-20 00:17:20,601 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 00:17:20,601 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 00:17:20,602 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 00:17:20,603 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 00:17:20,603 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 00:17:20,603 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 00:17:20,603 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 00:17:20,603 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 00:17:20,604 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 00:17:20,604 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 00:17:20,604 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-20 00:17:20,604 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 00:17:20,604 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-20 00:17:20,605 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 00:17:20,605 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 00:17:20,605 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 00:17:20,605 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-20 00:17:20,605 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 00:17:20,605 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 00:17:20,606 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 00:17:20,606 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 00:17:20,606 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 00:17:20,606 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 00:17:20,606 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 00:17:20,607 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-20 00:17:20,607 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 00:17:20,607 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-20 00:17:20,607 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-20 00:17:20,607 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 00:17:20,608 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(reach_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 -> fbf6cb56c42d2fc851e723344a93d807d314228d [2020-10-20 00:17:20,815 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 00:17:20,828 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 00:17:20,832 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 00:17:20,834 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 00:17:20,834 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 00:17:20,835 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/filter1.c [2020-10-20 00:17:20,904 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fb33f428c/782874d590264e98820748a5f70d036a/FLAG7256419f7 [2020-10-20 00:17:21,357 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 00:17:21,358 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/filter1.c [2020-10-20 00:17:21,364 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fb33f428c/782874d590264e98820748a5f70d036a/FLAG7256419f7 [2020-10-20 00:17:21,754 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fb33f428c/782874d590264e98820748a5f70d036a [2020-10-20 00:17:21,758 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 00:17:21,764 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 00:17:21,765 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 00:17:21,765 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 00:17:21,768 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 00:17:21,769 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 12:17:21" (1/1) ... [2020-10-20 00:17:21,772 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@119d70f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:17:21, skipping insertion in model container [2020-10-20 00:17:21,773 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 12:17:21" (1/1) ... [2020-10-20 00:17:21,780 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 00:17:21,801 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 00:17:22,062 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 00:17:22,074 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 00:17:22,096 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 00:17:22,113 INFO L208 MainTranslator]: Completed translation [2020-10-20 00:17:22,114 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:17:22 WrapperNode [2020-10-20 00:17:22,115 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 00:17:22,116 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 00:17:22,116 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 00:17:22,117 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 00:17:22,126 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:17:22" (1/1) ... [2020-10-20 00:17:22,138 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:17:22" (1/1) ... [2020-10-20 00:17:22,157 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 00:17:22,157 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 00:17:22,157 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 00:17:22,157 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 00:17:22,167 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:17:22" (1/1) ... [2020-10-20 00:17:22,167 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:17:22" (1/1) ... [2020-10-20 00:17:22,169 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:17:22" (1/1) ... [2020-10-20 00:17:22,169 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:17:22" (1/1) ... [2020-10-20 00:17:22,174 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:17:22" (1/1) ... [2020-10-20 00:17:22,179 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:17:22" (1/1) ... [2020-10-20 00:17:22,181 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:17:22" (1/1) ... [2020-10-20 00:17:22,183 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 00:17:22,184 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 00:17:22,184 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 00:17:22,184 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 00:17:22,185 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:17:22" (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 [2020-10-20 00:17:22,251 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-20 00:17:22,251 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 00:17:22,252 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 00:17:22,252 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 00:17:22,475 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 00:17:22,475 INFO L298 CfgBuilder]: Removed 11 assume(true) statements. [2020-10-20 00:17:22,477 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:17:22 BoogieIcfgContainer [2020-10-20 00:17:22,477 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 00:17:22,478 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 00:17:22,479 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 00:17:22,482 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 00:17:22,482 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 12:17:21" (1/3) ... [2020-10-20 00:17:22,483 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2321b138 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 12:17:22, skipping insertion in model container [2020-10-20 00:17:22,483 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:17:22" (2/3) ... [2020-10-20 00:17:22,484 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2321b138 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 12:17:22, skipping insertion in model container [2020-10-20 00:17:22,484 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:17:22" (3/3) ... [2020-10-20 00:17:22,486 INFO L111 eAbstractionObserver]: Analyzing ICFG filter1.c [2020-10-20 00:17:22,498 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 00:17:22,505 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-20 00:17:22,516 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-20 00:17:22,538 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 00:17:22,539 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-20 00:17:22,539 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 00:17:22,539 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 00:17:22,539 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 00:17:22,539 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 00:17:22,539 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 00:17:22,540 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 00:17:22,555 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states. [2020-10-20 00:17:22,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-20 00:17:22,560 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:17:22,561 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:17:22,561 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:17:22,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:17:22,566 INFO L82 PathProgramCache]: Analyzing trace with hash -332259343, now seen corresponding path program 1 times [2020-10-20 00:17:22,574 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 00:17:22,575 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312045807] [2020-10-20 00:17:22,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 00:17:22,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:17:22,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 00:17:22,720 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312045807] [2020-10-20 00:17:22,721 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 00:17:22,722 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-20 00:17:22,723 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443470166] [2020-10-20 00:17:22,728 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-20 00:17:22,728 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 00:17:22,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-20 00:17:22,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-20 00:17:22,742 INFO L87 Difference]: Start difference. First operand 16 states. Second operand 2 states. [2020-10-20 00:17:22,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 00:17:22,761 INFO L93 Difference]: Finished difference Result 29 states and 37 transitions. [2020-10-20 00:17:22,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-20 00:17:22,762 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 9 [2020-10-20 00:17:22,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 00:17:22,773 INFO L225 Difference]: With dead ends: 29 [2020-10-20 00:17:22,774 INFO L226 Difference]: Without dead ends: 11 [2020-10-20 00:17:22,777 INFO L677 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 [2020-10-20 00:17:22,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2020-10-20 00:17:22,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2020-10-20 00:17:22,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-10-20 00:17:22,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 12 transitions. [2020-10-20 00:17:22,815 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 12 transitions. Word has length 9 [2020-10-20 00:17:22,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 00:17:22,816 INFO L481 AbstractCegarLoop]: Abstraction has 11 states and 12 transitions. [2020-10-20 00:17:22,816 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-20 00:17:22,816 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 12 transitions. [2020-10-20 00:17:22,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-20 00:17:22,817 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:17:22,817 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:17:22,818 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-20 00:17:22,818 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:17:22,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:17:22,818 INFO L82 PathProgramCache]: Analyzing trace with hash -275001041, now seen corresponding path program 1 times [2020-10-20 00:17:22,819 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 00:17:22,819 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917532500] [2020-10-20 00:17:22,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 00:17:22,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 00:17:22,859 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 00:17:22,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 00:17:22,885 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 00:17:22,911 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 00:17:22,911 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-20 00:17:22,912 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-20 00:17:22,962 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 12:17:22 BoogieIcfgContainer [2020-10-20 00:17:22,962 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 00:17:22,962 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 00:17:22,962 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 00:17:22,963 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 00:17:22,963 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:17:22" (3/4) ... [2020-10-20 00:17:22,967 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-20 00:17:22,968 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 00:17:22,970 INFO L168 Benchmark]: Toolchain (without parser) took 1210.26 ms. Allocated memory was 34.1 MB in the beginning and 45.1 MB in the end (delta: 11.0 MB). Free memory was 15.2 MB in the beginning and 25.0 MB in the end (delta: -9.9 MB). Peak memory consumption was 1.1 MB. Max. memory is 14.3 GB. [2020-10-20 00:17:22,971 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 32.5 MB. Free memory was 9.9 MB in the beginning and 9.9 MB in the end (delta: 43.7 kB). Peak memory consumption was 43.7 kB. Max. memory is 14.3 GB. [2020-10-20 00:17:22,973 INFO L168 Benchmark]: CACSL2BoogieTranslator took 350.34 ms. Allocated memory was 34.1 MB in the beginning and 42.5 MB in the end (delta: 8.4 MB). Free memory was 14.2 MB in the beginning and 23.6 MB in the end (delta: -9.4 MB). Peak memory consumption was 11.2 MB. Max. memory is 14.3 GB. [2020-10-20 00:17:22,973 INFO L168 Benchmark]: Boogie Procedure Inliner took 40.53 ms. Allocated memory is still 42.5 MB. Free memory was 23.6 MB in the beginning and 21.9 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 14.3 GB. [2020-10-20 00:17:22,974 INFO L168 Benchmark]: Boogie Preprocessor took 26.14 ms. Allocated memory is still 42.5 MB. Free memory was 21.9 MB in the beginning and 20.5 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 14.3 GB. [2020-10-20 00:17:22,976 INFO L168 Benchmark]: RCFGBuilder took 293.68 ms. Allocated memory was 42.5 MB in the beginning and 44.0 MB in the end (delta: 1.6 MB). Free memory was 20.5 MB in the beginning and 19.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 10.2 MB. Max. memory is 14.3 GB. [2020-10-20 00:17:22,977 INFO L168 Benchmark]: TraceAbstraction took 483.46 ms. Allocated memory was 44.0 MB in the beginning and 45.1 MB in the end (delta: 1.0 MB). Free memory was 18.7 MB in the beginning and 25.6 MB in the end (delta: -6.9 MB). Peak memory consumption was 9.1 MB. Max. memory is 14.3 GB. [2020-10-20 00:17:22,977 INFO L168 Benchmark]: Witness Printer took 5.42 ms. Allocated memory is still 45.1 MB. Free memory was 25.6 MB in the beginning and 25.0 MB in the end (delta: 593.7 kB). Peak memory consumption was 593.7 kB. Max. memory is 14.3 GB. [2020-10-20 00:17:22,983 INFO L339 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 32.5 MB. Free memory was 9.9 MB in the beginning and 9.9 MB in the end (delta: 43.7 kB). Peak memory consumption was 43.7 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 350.34 ms. Allocated memory was 34.1 MB in the beginning and 42.5 MB in the end (delta: 8.4 MB). Free memory was 14.2 MB in the beginning and 23.6 MB in the end (delta: -9.4 MB). Peak memory consumption was 11.2 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 40.53 ms. Allocated memory is still 42.5 MB. Free memory was 23.6 MB in the beginning and 21.9 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 26.14 ms. Allocated memory is still 42.5 MB. Free memory was 21.9 MB in the beginning and 20.5 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 14.3 GB. * RCFGBuilder took 293.68 ms. Allocated memory was 42.5 MB in the beginning and 44.0 MB in the end (delta: 1.6 MB). Free memory was 20.5 MB in the beginning and 19.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 10.2 MB. Max. memory is 14.3 GB. * TraceAbstraction took 483.46 ms. Allocated memory was 44.0 MB in the beginning and 45.1 MB in the end (delta: 1.0 MB). Free memory was 18.7 MB in the beginning and 25.6 MB in the end (delta: -6.9 MB). Peak memory consumption was 9.1 MB. Max. memory is 14.3 GB. * Witness Printer took 5.42 ms. Allocated memory is still 45.1 MB. Free memory was 25.6 MB in the beginning and 25.0 MB in the end (delta: 593.7 kB). Peak memory consumption was 593.7 kB. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 41, overapproximation of to_real at line 34. Possible FailurePath: [L22] double E0, E1, S; [L23] int i; [L25] E1 = 0 [L26] S = 0 [L28] i = 0 [L28] COND TRUE i <= 1000000 [L30] E0 = __VERIFIER_nondet_double() [L15] COND FALSE !(!cond) [L33] COND TRUE __VERIFIER_nondet_int() [L34] S = 0 [L39] E1 = E0 [L17] COND TRUE !(cond) [L3] __assert_fail("0", "filter1.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 16 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.3s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 16 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=16occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 18 NumberOfCodeBlocks, 18 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 8 ConstructedInterpolants, 0 QuantifiedInterpolants, 64 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.25-9a8b2e8 [2020-10-20 00:17:25,186 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 00:17:25,189 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 00:17:25,213 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 00:17:25,213 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 00:17:25,214 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 00:17:25,216 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 00:17:25,217 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 00:17:25,219 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 00:17:25,220 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 00:17:25,221 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 00:17:25,222 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 00:17:25,223 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 00:17:25,224 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 00:17:25,225 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 00:17:25,226 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 00:17:25,227 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 00:17:25,228 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 00:17:25,229 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 00:17:25,231 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 00:17:25,233 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 00:17:25,234 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 00:17:25,235 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 00:17:25,236 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 00:17:25,239 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 00:17:25,239 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 00:17:25,239 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 00:17:25,240 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 00:17:25,241 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 00:17:25,242 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 00:17:25,242 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 00:17:25,243 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 00:17:25,243 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 00:17:25,244 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 00:17:25,245 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 00:17:25,245 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 00:17:25,246 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 00:17:25,246 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 00:17:25,246 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 00:17:25,247 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 00:17:25,248 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 00:17:25,249 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-10-20 00:17:25,290 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 00:17:25,290 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 00:17:25,291 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 00:17:25,293 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 00:17:25,293 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 00:17:25,293 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 00:17:25,293 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 00:17:25,294 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 00:17:25,294 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 00:17:25,294 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-20 00:17:25,294 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 00:17:25,294 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-20 00:17:25,294 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-10-20 00:17:25,295 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-10-20 00:17:25,295 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 00:17:25,295 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 00:17:25,295 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 00:17:25,295 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-20 00:17:25,296 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 00:17:25,296 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 00:17:25,296 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 00:17:25,296 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 00:17:25,296 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 00:17:25,296 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 00:17:25,297 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 00:17:25,297 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-20 00:17:25,302 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-10-20 00:17:25,302 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-10-20 00:17:25,303 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-20 00:17:25,303 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 00:17:25,303 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-20 00:17:25,303 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(reach_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 -> fbf6cb56c42d2fc851e723344a93d807d314228d [2020-10-20 00:17:25,515 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 00:17:25,527 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 00:17:25,533 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 00:17:25,534 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 00:17:25,536 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 00:17:25,537 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/filter1.c [2020-10-20 00:17:25,613 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2cc904c84/8219209b8dc943af807d3a29cb099761/FLAG55ffea26f [2020-10-20 00:17:26,073 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 00:17:26,074 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/filter1.c [2020-10-20 00:17:26,084 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2cc904c84/8219209b8dc943af807d3a29cb099761/FLAG55ffea26f [2020-10-20 00:17:26,432 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2cc904c84/8219209b8dc943af807d3a29cb099761 [2020-10-20 00:17:26,436 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 00:17:26,443 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 00:17:26,444 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 00:17:26,444 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 00:17:26,448 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 00:17:26,449 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 12:17:26" (1/1) ... [2020-10-20 00:17:26,452 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41ae5b69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:17:26, skipping insertion in model container [2020-10-20 00:17:26,453 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 12:17:26" (1/1) ... [2020-10-20 00:17:26,461 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 00:17:26,486 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 00:17:26,735 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 00:17:26,755 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 00:17:26,780 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 00:17:26,798 INFO L208 MainTranslator]: Completed translation [2020-10-20 00:17:26,798 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:17:26 WrapperNode [2020-10-20 00:17:26,798 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 00:17:26,799 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 00:17:26,799 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 00:17:26,799 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 00:17:26,807 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:17:26" (1/1) ... [2020-10-20 00:17:26,816 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:17:26" (1/1) ... [2020-10-20 00:17:26,835 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 00:17:26,836 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 00:17:26,836 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 00:17:26,836 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 00:17:26,843 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:17:26" (1/1) ... [2020-10-20 00:17:26,843 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:17:26" (1/1) ... [2020-10-20 00:17:26,847 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:17:26" (1/1) ... [2020-10-20 00:17:26,847 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:17:26" (1/1) ... [2020-10-20 00:17:26,855 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:17:26" (1/1) ... [2020-10-20 00:17:26,859 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:17:26" (1/1) ... [2020-10-20 00:17:26,861 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:17:26" (1/1) ... [2020-10-20 00:17:26,864 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 00:17:26,865 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 00:17:26,865 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 00:17:26,865 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 00:17:26,866 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:17:26" (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 [2020-10-20 00:17:26,934 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-10-20 00:17:26,935 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 00:17:26,935 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 00:17:26,935 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 00:17:27,893 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 00:17:27,894 INFO L298 CfgBuilder]: Removed 11 assume(true) statements. [2020-10-20 00:17:27,895 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:17:27 BoogieIcfgContainer [2020-10-20 00:17:27,896 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 00:17:27,897 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 00:17:27,897 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 00:17:27,901 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 00:17:27,901 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 12:17:26" (1/3) ... [2020-10-20 00:17:27,902 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13105ef2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 12:17:27, skipping insertion in model container [2020-10-20 00:17:27,902 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:17:26" (2/3) ... [2020-10-20 00:17:27,902 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13105ef2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 12:17:27, skipping insertion in model container [2020-10-20 00:17:27,903 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:17:27" (3/3) ... [2020-10-20 00:17:27,904 INFO L111 eAbstractionObserver]: Analyzing ICFG filter1.c [2020-10-20 00:17:27,916 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 00:17:27,922 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-20 00:17:27,933 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-20 00:17:27,954 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 00:17:27,954 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-20 00:17:27,954 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 00:17:27,955 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 00:17:27,955 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 00:17:27,955 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 00:17:27,955 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 00:17:27,956 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 00:17:27,969 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states. [2020-10-20 00:17:27,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-20 00:17:27,975 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:17:27,976 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:17:27,977 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:17:27,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:17:27,983 INFO L82 PathProgramCache]: Analyzing trace with hash 266439148, now seen corresponding path program 1 times [2020-10-20 00:17:27,995 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 00:17:27,995 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1707128052] [2020-10-20 00:17:27,995 INFO L95 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 [2020-10-20 00:17:28,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:17:28,084 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 1 conjunts are in the unsatisfiable core [2020-10-20 00:17:28,088 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 00:17:28,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 00:17:28,103 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 00:17:28,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 00:17:28,108 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1707128052] [2020-10-20 00:17:28,109 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-20 00:17:28,109 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-10-20 00:17:28,110 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970938241] [2020-10-20 00:17:28,114 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-20 00:17:28,114 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 00:17:28,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-20 00:17:28,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-20 00:17:28,127 INFO L87 Difference]: Start difference. First operand 15 states. Second operand 2 states. [2020-10-20 00:17:28,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 00:17:28,151 INFO L93 Difference]: Finished difference Result 27 states and 35 transitions. [2020-10-20 00:17:28,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-20 00:17:28,153 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-10-20 00:17:28,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 00:17:28,163 INFO L225 Difference]: With dead ends: 27 [2020-10-20 00:17:28,163 INFO L226 Difference]: Without dead ends: 10 [2020-10-20 00:17:28,166 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-20 00:17:28,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2020-10-20 00:17:28,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2020-10-20 00:17:28,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-10-20 00:17:28,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 11 transitions. [2020-10-20 00:17:28,193 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 11 transitions. Word has length 8 [2020-10-20 00:17:28,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 00:17:28,193 INFO L481 AbstractCegarLoop]: Abstraction has 10 states and 11 transitions. [2020-10-20 00:17:28,194 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-20 00:17:28,194 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 11 transitions. [2020-10-20 00:17:28,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-20 00:17:28,194 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:17:28,195 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:17:28,406 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-10-20 00:17:28,407 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:17:28,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:17:28,408 INFO L82 PathProgramCache]: Analyzing trace with hash 268286190, now seen corresponding path program 1 times [2020-10-20 00:17:28,409 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 00:17:28,410 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1552171448] [2020-10-20 00:17:28,410 INFO L95 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 [2020-10-20 00:17:28,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:17:28,465 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-20 00:17:28,468 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 00:17:28,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 00:17:28,530 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-20 00:17:28,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 00:17:28,591 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1552171448] [2020-10-20 00:17:28,591 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-20 00:17:28,591 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2020-10-20 00:17:28,592 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922144204] [2020-10-20 00:17:28,593 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-20 00:17:28,594 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-20 00:17:28,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-20 00:17:28,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-20 00:17:28,594 INFO L87 Difference]: Start difference. First operand 10 states and 11 transitions. Second operand 6 states. [2020-10-20 00:17:33,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 00:17:33,216 INFO L93 Difference]: Finished difference Result 25 states and 28 transitions. [2020-10-20 00:17:33,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-20 00:17:33,216 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 8 [2020-10-20 00:17:33,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 00:17:33,218 INFO L225 Difference]: With dead ends: 25 [2020-10-20 00:17:33,218 INFO L226 Difference]: Without dead ends: 23 [2020-10-20 00:17:33,220 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-20 00:17:33,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-10-20 00:17:33,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 12. [2020-10-20 00:17:33,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-10-20 00:17:33,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 13 transitions. [2020-10-20 00:17:33,225 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 13 transitions. Word has length 8 [2020-10-20 00:17:33,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 00:17:33,225 INFO L481 AbstractCegarLoop]: Abstraction has 12 states and 13 transitions. [2020-10-20 00:17:33,226 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-20 00:17:33,226 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 13 transitions. [2020-10-20 00:17:33,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-20 00:17:33,226 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:17:33,226 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:17:33,439 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-10-20 00:17:33,440 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:17:33,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:17:33,441 INFO L82 PathProgramCache]: Analyzing trace with hash 268345772, now seen corresponding path program 1 times [2020-10-20 00:17:33,442 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-20 00:17:33,443 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [243195406] [2020-10-20 00:17:33,443 INFO L95 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 [2020-10-20 00:17:33,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:17:33,890 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-20 00:17:33,892 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 00:17:34,027 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [243195406] [2020-10-20 00:17:34,028 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: no int: (_ BitVec 32) [2020-10-20 00:17:34,028 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1406407151] [2020-10-20 00:17:34,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 Starting monitored process 5 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2020-10-20 00:17:34,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:17:34,969 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-20 00:17:34,971 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 00:17:34,976 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: no int: (_ BitVec 32) [2020-10-20 00:17:34,977 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1807082470] [2020-10-20 00:17:34,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 00:17:35,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 00:17:35,663 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-20 00:17:35,664 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 00:17:35,787 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: no int: (_ BitVec 32) [2020-10-20 00:17:35,788 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2020-10-20 00:17:35,788 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2020-10-20 00:17:35,788 ERROR L205 FreeRefinementEngine]: Strategy WOLF failed to provide any proof altough trace is infeasible [2020-10-20 00:17:35,788 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-20 00:17:36,400 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3,5 cvc4 --incremental --print-success --lang smt --rewrite-divk,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 00:17:36,421 WARN L238 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-10-20 00:17:36,422 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 12:17:36 BoogieIcfgContainer [2020-10-20 00:17:36,422 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 00:17:36,423 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 00:17:36,423 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 00:17:36,423 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 00:17:36,424 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:17:27" (3/4) ... [2020-10-20 00:17:36,431 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-20 00:17:36,432 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 00:17:36,438 INFO L168 Benchmark]: Toolchain (without parser) took 9995.97 ms. Allocated memory was 37.2 MB in the beginning and 51.4 MB in the end (delta: 14.2 MB). Free memory was 13.2 MB in the beginning and 23.2 MB in the end (delta: -10.0 MB). Peak memory consumption was 4.1 MB. Max. memory is 14.3 GB. [2020-10-20 00:17:36,440 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 36.7 MB. Free memory was 15.9 MB in the beginning and 15.8 MB in the end (delta: 50.4 kB). Peak memory consumption was 50.4 kB. Max. memory is 14.3 GB. [2020-10-20 00:17:36,442 INFO L168 Benchmark]: CACSL2BoogieTranslator took 354.66 ms. Allocated memory was 37.2 MB in the beginning and 45.1 MB in the end (delta: 7.9 MB). Free memory was 12.3 MB in the beginning and 27.6 MB in the end (delta: -15.3 MB). Peak memory consumption was 9.4 MB. Max. memory is 14.3 GB. [2020-10-20 00:17:36,443 INFO L168 Benchmark]: Boogie Procedure Inliner took 36.22 ms. Allocated memory is still 45.1 MB. Free memory was 27.6 MB in the beginning and 25.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.3 GB. [2020-10-20 00:17:36,446 INFO L168 Benchmark]: Boogie Preprocessor took 28.90 ms. Allocated memory is still 45.1 MB. Free memory was 25.9 MB in the beginning and 24.3 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 14.3 GB. [2020-10-20 00:17:36,453 INFO L168 Benchmark]: RCFGBuilder took 1030.83 ms. Allocated memory was 45.1 MB in the beginning and 47.7 MB in the end (delta: 2.6 MB). Free memory was 24.3 MB in the beginning and 26.0 MB in the end (delta: -1.7 MB). Peak memory consumption was 14.1 MB. Max. memory is 14.3 GB. [2020-10-20 00:17:36,454 INFO L168 Benchmark]: TraceAbstraction took 8525.58 ms. Allocated memory was 47.7 MB in the beginning and 51.4 MB in the end (delta: 3.7 MB). Free memory was 25.4 MB in the beginning and 23.6 MB in the end (delta: 1.8 MB). Peak memory consumption was 5.5 MB. Max. memory is 14.3 GB. [2020-10-20 00:17:36,455 INFO L168 Benchmark]: Witness Printer took 8.83 ms. Allocated memory is still 51.4 MB. Free memory was 23.6 MB in the beginning and 23.2 MB in the end (delta: 416.4 kB). Peak memory consumption was 416.4 kB. Max. memory is 14.3 GB. [2020-10-20 00:17:36,470 INFO L339 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 36.7 MB. Free memory was 15.9 MB in the beginning and 15.8 MB in the end (delta: 50.4 kB). Peak memory consumption was 50.4 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 354.66 ms. Allocated memory was 37.2 MB in the beginning and 45.1 MB in the end (delta: 7.9 MB). Free memory was 12.3 MB in the beginning and 27.6 MB in the end (delta: -15.3 MB). Peak memory consumption was 9.4 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 36.22 ms. Allocated memory is still 45.1 MB. Free memory was 27.6 MB in the beginning and 25.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 28.90 ms. Allocated memory is still 45.1 MB. Free memory was 25.9 MB in the beginning and 24.3 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 14.3 GB. * RCFGBuilder took 1030.83 ms. Allocated memory was 45.1 MB in the beginning and 47.7 MB in the end (delta: 2.6 MB). Free memory was 24.3 MB in the beginning and 26.0 MB in the end (delta: -1.7 MB). Peak memory consumption was 14.1 MB. Max. memory is 14.3 GB. * TraceAbstraction took 8525.58 ms. Allocated memory was 47.7 MB in the beginning and 51.4 MB in the end (delta: 3.7 MB). Free memory was 25.4 MB in the beginning and 23.6 MB in the end (delta: 1.8 MB). Peak memory consumption was 5.5 MB. Max. memory is 14.3 GB. * Witness Printer took 8.83 ms. Allocated memory is still 51.4 MB. Free memory was 23.6 MB in the beginning and 23.2 MB in the end (delta: 416.4 kB). Peak memory consumption was 416.4 kB. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L22] double E0, E1, S; [L23] int i; [L25] E1 = 0 [L26] S = 0 [L28] i = 0 [L28] COND TRUE i <= 1000000 [L30] E0 = __VERIFIER_nondet_double() [L15] COND FALSE !(!cond) [L33] COND FALSE !(__VERIFIER_nondet_int()) [L37] S = 0.999 * S + E0 - E1 [L39] E1 = E0 [L17] COND TRUE !(cond) [L3] __assert_fail("0", "filter1.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 15 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNKNOWN, OverallTime: 8.4s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 4.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 22 SDtfs, 14 SDslu, 23 SDs, 0 SdLazy, 33 SolverSat, 4 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 4.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 31 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15occurred 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, 11 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 16 NumberOfCodeBlocks, 16 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 28 ConstructedInterpolants, 0 QuantifiedInterpolants, 350 SizeOfPredicates, 5 NumberOfNonLiveVariables, 74 ConjunctsInSsa, 5 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, ACCELERATED_INTERPOLATION: 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...