./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench/freire2.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5758efa3 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-64bit-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 64bit --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-64bit-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 64bit --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 0.1.24-5758efa [2019-11-26 20:28:08,381 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-26 20:28:08,383 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-26 20:28:08,396 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-26 20:28:08,396 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-26 20:28:08,398 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-26 20:28:08,399 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-26 20:28:08,401 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-26 20:28:08,403 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-26 20:28:08,405 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-26 20:28:08,407 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-26 20:28:08,410 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-26 20:28:08,412 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-26 20:28:08,414 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-26 20:28:08,416 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-26 20:28:08,418 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-26 20:28:08,420 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-26 20:28:08,423 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-26 20:28:08,425 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-26 20:28:08,430 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-26 20:28:08,432 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-26 20:28:08,435 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-26 20:28:08,438 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-26 20:28:08,439 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-26 20:28:08,444 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-26 20:28:08,444 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-26 20:28:08,445 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-26 20:28:08,447 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-26 20:28:08,447 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-26 20:28:08,450 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-26 20:28:08,450 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-26 20:28:08,451 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-26 20:28:08,452 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-26 20:28:08,452 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-26 20:28:08,454 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-26 20:28:08,455 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-26 20:28:08,456 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-26 20:28:08,456 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-26 20:28:08,456 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-26 20:28:08,458 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-26 20:28:08,461 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-26 20:28:08,462 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2019-11-26 20:28:08,501 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-26 20:28:08,503 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-26 20:28:08,504 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-26 20:28:08,506 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-26 20:28:08,506 INFO L138 SettingsManager]: * Use SBE=true [2019-11-26 20:28:08,509 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-26 20:28:08,509 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-26 20:28:08,509 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-26 20:28:08,510 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-26 20:28:08,510 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-26 20:28:08,510 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-26 20:28:08,511 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-26 20:28:08,511 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-26 20:28:08,511 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-26 20:28:08,512 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-26 20:28:08,514 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-26 20:28:08,515 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-26 20:28:08,515 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-26 20:28:08,515 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-26 20:28:08,516 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-26 20:28:08,516 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-26 20:28:08,516 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-26 20:28:08,517 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-26 20:28:08,517 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-26 20:28:08,517 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-26 20:28:08,517 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-26 20:28:08,518 INFO L138 SettingsManager]: * To the following directory=dump/ 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 -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 30689778d55a79f9fe352193122f8e3d18bcc1bb [2019-11-26 20:28:08,839 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-26 20:28:08,859 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-26 20:28:08,863 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-26 20:28:08,865 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-26 20:28:08,865 INFO L275 PluginConnector]: CDTParser initialized [2019-11-26 20:28:08,866 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench/freire2.c [2019-11-26 20:28:08,927 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/665e6c270/29e219d3a4d7431c9a4abd17814dedc3/FLAG2e2ed9e3c [2019-11-26 20:28:09,332 INFO L306 CDTParser]: Found 1 translation units. [2019-11-26 20:28:09,333 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench/freire2.c [2019-11-26 20:28:09,339 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/665e6c270/29e219d3a4d7431c9a4abd17814dedc3/FLAG2e2ed9e3c [2019-11-26 20:28:09,742 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/665e6c270/29e219d3a4d7431c9a4abd17814dedc3 [2019-11-26 20:28:09,746 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-26 20:28:09,748 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-26 20:28:09,749 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-26 20:28:09,750 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-26 20:28:09,753 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-26 20:28:09,754 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 08:28:09" (1/1) ... [2019-11-26 20:28:09,757 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10712095 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 08:28:09, skipping insertion in model container [2019-11-26 20:28:09,758 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 08:28:09" (1/1) ... [2019-11-26 20:28:09,766 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-26 20:28:09,787 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-26 20:28:09,978 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 20:28:09,982 INFO L203 MainTranslator]: Completed pre-run [2019-11-26 20:28:10,005 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 20:28:10,019 INFO L208 MainTranslator]: Completed translation [2019-11-26 20:28:10,020 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 08:28:10 WrapperNode [2019-11-26 20:28:10,020 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-26 20:28:10,021 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-26 20:28:10,021 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-26 20:28:10,021 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-26 20:28:10,027 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 08:28:10" (1/1) ... [2019-11-26 20:28:10,092 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 08:28:10" (1/1) ... [2019-11-26 20:28:10,113 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-26 20:28:10,114 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-26 20:28:10,114 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-26 20:28:10,115 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-26 20:28:10,124 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 08:28:10" (1/1) ... [2019-11-26 20:28:10,125 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 08:28:10" (1/1) ... [2019-11-26 20:28:10,126 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 08:28:10" (1/1) ... [2019-11-26 20:28:10,127 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 08:28:10" (1/1) ... [2019-11-26 20:28:10,132 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 08:28:10" (1/1) ... [2019-11-26 20:28:10,139 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 08:28:10" (1/1) ... [2019-11-26 20:28:10,143 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 08:28:10" (1/1) ... [2019-11-26 20:28:10,147 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-26 20:28:10,148 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-26 20:28:10,148 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-26 20:28:10,148 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-26 20:28:10,149 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 08:28:10" (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 [2019-11-26 20:28:10,199 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-26 20:28:10,200 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-26 20:28:10,428 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-26 20:28:10,428 INFO L284 CfgBuilder]: Removed 17 assume(true) statements. [2019-11-26 20:28:10,429 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 08:28:10 BoogieIcfgContainer [2019-11-26 20:28:10,429 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-26 20:28:10,431 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-26 20:28:10,431 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-26 20:28:10,434 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-26 20:28:10,434 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 08:28:09" (1/3) ... [2019-11-26 20:28:10,435 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a2a1432 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 08:28:10, skipping insertion in model container [2019-11-26 20:28:10,435 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 08:28:10" (2/3) ... [2019-11-26 20:28:10,436 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a2a1432 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 08:28:10, skipping insertion in model container [2019-11-26 20:28:10,436 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 08:28:10" (3/3) ... [2019-11-26 20:28:10,438 INFO L109 eAbstractionObserver]: Analyzing ICFG freire2.c [2019-11-26 20:28:10,447 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-26 20:28:10,455 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2019-11-26 20:28:10,468 INFO L249 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2019-11-26 20:28:10,495 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-26 20:28:10,496 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-26 20:28:10,496 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-26 20:28:10,496 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-26 20:28:10,497 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-26 20:28:10,497 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-26 20:28:10,497 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-26 20:28:10,497 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-26 20:28:10,512 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states. [2019-11-26 20:28:10,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-11-26 20:28:10,517 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 20:28:10,518 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-11-26 20:28:10,518 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]=== [2019-11-26 20:28:10,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 20:28:10,523 INFO L82 PathProgramCache]: Analyzing trace with hash 963340, now seen corresponding path program 1 times [2019-11-26 20:28:10,530 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-26 20:28:10,530 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92657846] [2019-11-26 20:28:10,531 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 20:28:10,597 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-26 20:28:10,598 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [275567817] [2019-11-26 20:28:10,598 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 [2019-11-26 20:28:10,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-26 20:28:10,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-26 20:28:10,692 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-26 20:28:10,694 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-26 20:28:10,897 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-26 20:28:10,915 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.11 08:28:10 BoogieIcfgContainer [2019-11-26 20:28:10,916 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-26 20:28:10,916 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-26 20:28:10,916 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-26 20:28:10,917 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-26 20:28:10,917 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 08:28:10" (3/4) ... [2019-11-26 20:28:10,922 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-26 20:28:10,923 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-26 20:28:10,926 INFO L168 Benchmark]: Toolchain (without parser) took 1177.24 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 133.7 MB). Free memory was 961.7 MB in the beginning and 1.1 GB in the end (delta: -121.5 MB). Peak memory consumption was 12.2 MB. Max. memory is 11.5 GB. [2019-11-26 20:28:10,928 INFO L168 Benchmark]: CDTParser took 0.24 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. [2019-11-26 20:28:10,930 INFO L168 Benchmark]: CACSL2BoogieTranslator took 270.98 ms. Allocated memory is still 1.0 GB. Free memory was 961.7 MB in the beginning and 951.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-11-26 20:28:10,932 INFO L168 Benchmark]: Boogie Procedure Inliner took 93.23 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 133.7 MB). Free memory was 951.0 MB in the beginning and 1.1 GB in the end (delta: -172.5 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. [2019-11-26 20:28:10,933 INFO L168 Benchmark]: Boogie Preprocessor took 33.35 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 20:28:10,934 INFO L168 Benchmark]: RCFGBuilder took 281.85 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: 20.3 MB). Peak memory consumption was 20.3 MB. Max. memory is 11.5 GB. [2019-11-26 20:28:10,936 INFO L168 Benchmark]: TraceAbstraction took 484.99 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: 20.0 MB). Peak memory consumption was 20.0 MB. Max. memory is 11.5 GB. [2019-11-26 20:28:10,936 INFO L168 Benchmark]: Witness Printer took 7.33 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. [2019-11-26 20:28:10,942 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 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 270.98 ms. Allocated memory is still 1.0 GB. Free memory was 961.7 MB in the beginning and 951.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 93.23 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 133.7 MB). Free memory was 951.0 MB in the beginning and 1.1 GB in the end (delta: -172.5 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 33.35 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 281.85 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: 20.3 MB). Peak memory consumption was 20.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 484.99 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: 20.0 MB). Peak memory consumption was 20.0 MB. Max. memory is 11.5 GB. * Witness Printer took 7.33 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: 0.4s, 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 0.1.24-5758efa [2019-11-26 20:28:12,887 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-26 20:28:12,889 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-26 20:28:12,908 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-26 20:28:12,909 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-26 20:28:12,911 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-26 20:28:12,913 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-26 20:28:12,922 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-26 20:28:12,927 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-26 20:28:12,932 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-26 20:28:12,933 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-26 20:28:12,936 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-26 20:28:12,936 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-26 20:28:12,940 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-26 20:28:12,942 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-26 20:28:12,943 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-26 20:28:12,945 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-26 20:28:12,946 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-26 20:28:12,949 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-26 20:28:12,953 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-26 20:28:12,958 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-26 20:28:12,963 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-26 20:28:12,964 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-26 20:28:12,966 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-26 20:28:12,968 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-26 20:28:12,968 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-26 20:28:12,969 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-26 20:28:12,970 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-26 20:28:12,970 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-26 20:28:12,971 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-26 20:28:12,971 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-26 20:28:12,972 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-26 20:28:12,973 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-26 20:28:12,974 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-26 20:28:12,975 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-26 20:28:12,975 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-26 20:28:12,976 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-26 20:28:12,976 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-26 20:28:12,977 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-26 20:28:12,977 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-26 20:28:12,978 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-26 20:28:12,979 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2019-11-26 20:28:13,000 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-26 20:28:13,001 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-26 20:28:13,002 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-26 20:28:13,005 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-26 20:28:13,005 INFO L138 SettingsManager]: * Use SBE=true [2019-11-26 20:28:13,006 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-26 20:28:13,006 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-26 20:28:13,006 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-26 20:28:13,006 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-26 20:28:13,007 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-26 20:28:13,007 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-26 20:28:13,007 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-26 20:28:13,008 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-26 20:28:13,008 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-26 20:28:13,008 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-26 20:28:13,008 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-26 20:28:13,009 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-26 20:28:13,009 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-26 20:28:13,009 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-26 20:28:13,010 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-26 20:28:13,010 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-26 20:28:13,010 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-26 20:28:13,011 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-26 20:28:13,011 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-11-26 20:28:13,011 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-26 20:28:13,011 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-26 20:28:13,012 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-26 20:28:13,012 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2019-11-26 20:28:13,012 INFO L138 SettingsManager]: * To the following directory=dump/ 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 -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 30689778d55a79f9fe352193122f8e3d18bcc1bb [2019-11-26 20:28:13,332 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-26 20:28:13,343 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-26 20:28:13,347 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-26 20:28:13,348 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-26 20:28:13,349 INFO L275 PluginConnector]: CDTParser initialized [2019-11-26 20:28:13,350 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench/freire2.c [2019-11-26 20:28:13,413 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/853ef158b/52b2a008b100412b89e8698b358e7d5b/FLAGef762bd56 [2019-11-26 20:28:13,877 INFO L306 CDTParser]: Found 1 translation units. [2019-11-26 20:28:13,878 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench/freire2.c [2019-11-26 20:28:13,885 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/853ef158b/52b2a008b100412b89e8698b358e7d5b/FLAGef762bd56 [2019-11-26 20:28:14,282 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/853ef158b/52b2a008b100412b89e8698b358e7d5b [2019-11-26 20:28:14,286 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-26 20:28:14,288 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-26 20:28:14,289 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-26 20:28:14,289 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-26 20:28:14,293 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-26 20:28:14,294 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 08:28:14" (1/1) ... [2019-11-26 20:28:14,297 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21695d27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 08:28:14, skipping insertion in model container [2019-11-26 20:28:14,297 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 08:28:14" (1/1) ... [2019-11-26 20:28:14,305 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-26 20:28:14,329 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-26 20:28:14,640 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 20:28:14,652 INFO L203 MainTranslator]: Completed pre-run [2019-11-26 20:28:14,756 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 20:28:14,776 INFO L208 MainTranslator]: Completed translation [2019-11-26 20:28:14,777 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 08:28:14 WrapperNode [2019-11-26 20:28:14,777 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-26 20:28:14,778 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-26 20:28:14,778 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-26 20:28:14,779 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-26 20:28:14,788 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 08:28:14" (1/1) ... [2019-11-26 20:28:14,808 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 08:28:14" (1/1) ... [2019-11-26 20:28:14,852 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-26 20:28:14,855 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-26 20:28:14,855 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-26 20:28:14,855 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-26 20:28:14,866 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 08:28:14" (1/1) ... [2019-11-26 20:28:14,867 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 08:28:14" (1/1) ... [2019-11-26 20:28:14,871 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 08:28:14" (1/1) ... [2019-11-26 20:28:14,872 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 08:28:14" (1/1) ... [2019-11-26 20:28:14,893 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 08:28:14" (1/1) ... [2019-11-26 20:28:14,901 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 08:28:14" (1/1) ... [2019-11-26 20:28:14,908 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 08:28:14" (1/1) ... [2019-11-26 20:28:14,916 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-26 20:28:14,917 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-26 20:28:14,917 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-26 20:28:14,917 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-26 20:28:14,918 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 08:28:14" (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 [2019-11-26 20:28:14,989 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-26 20:28:14,989 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-26 20:28:24,382 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-26 20:28:24,382 INFO L284 CfgBuilder]: Removed 17 assume(true) statements. [2019-11-26 20:28:24,383 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 08:28:24 BoogieIcfgContainer [2019-11-26 20:28:24,384 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-26 20:28:24,385 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-26 20:28:24,385 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-26 20:28:24,387 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-26 20:28:24,387 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 08:28:14" (1/3) ... [2019-11-26 20:28:24,388 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ad952f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 08:28:24, skipping insertion in model container [2019-11-26 20:28:24,388 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 08:28:14" (2/3) ... [2019-11-26 20:28:24,389 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ad952f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 08:28:24, skipping insertion in model container [2019-11-26 20:28:24,389 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 08:28:24" (3/3) ... [2019-11-26 20:28:24,390 INFO L109 eAbstractionObserver]: Analyzing ICFG freire2.c [2019-11-26 20:28:24,400 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-26 20:28:24,407 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2019-11-26 20:28:24,419 INFO L249 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2019-11-26 20:28:24,444 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-26 20:28:24,444 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-26 20:28:24,444 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-26 20:28:24,444 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-26 20:28:24,445 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-26 20:28:24,445 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-26 20:28:24,445 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-26 20:28:24,445 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-26 20:28:24,459 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2019-11-26 20:28:24,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-11-26 20:28:24,465 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 20:28:24,466 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-11-26 20:28:24,467 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]=== [2019-11-26 20:28:24,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 20:28:24,474 INFO L82 PathProgramCache]: Analyzing trace with hash 28699754, now seen corresponding path program 1 times [2019-11-26 20:28:24,486 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-26 20:28:24,487 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [385002817] [2019-11-26 20:28:24,487 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 [2019-11-26 20:28:24,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 20:28:24,632 WARN L253 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-26 20:28:24,636 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 20:28:24,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 20:28:24,763 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 20:28:27,884 WARN L192 SmtUtils]: Spent 616.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2019-11-26 20:28:27,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 20:28:27,909 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [385002817] [2019-11-26 20:28:27,910 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-26 20:28:27,910 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2019-11-26 20:28:27,911 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57689192] [2019-11-26 20:28:27,915 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-26 20:28:27,916 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-26 20:28:27,929 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-26 20:28:27,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2019-11-26 20:28:27,933 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 7 states. [2019-11-26 20:28:47,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 20:28:47,422 INFO L93 Difference]: Finished difference Result 67 states and 87 transitions. [2019-11-26 20:28:47,424 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-26 20:28:47,426 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 5 [2019-11-26 20:28:47,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 20:28:47,438 INFO L225 Difference]: With dead ends: 67 [2019-11-26 20:28:47,438 INFO L226 Difference]: Without dead ends: 34 [2019-11-26 20:28:47,443 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2019-11-26 20:28:47,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2019-11-26 20:28:47,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 29. [2019-11-26 20:28:47,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2019-11-26 20:28:47,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 29 transitions. [2019-11-26 20:28:47,476 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 29 transitions. Word has length 5 [2019-11-26 20:28:47,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 20:28:47,476 INFO L462 AbstractCegarLoop]: Abstraction has 29 states and 29 transitions. [2019-11-26 20:28:47,477 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-26 20:28:47,477 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 29 transitions. [2019-11-26 20:28:47,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-11-26 20:28:47,477 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 20:28:47,477 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-26 20:28:47,682 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2019-11-26 20:28:47,683 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]=== [2019-11-26 20:28:47,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 20:28:47,684 INFO L82 PathProgramCache]: Analyzing trace with hash 1810815341, now seen corresponding path program 1 times [2019-11-26 20:28:47,685 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-26 20:28:47,685 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1975367631] [2019-11-26 20:28:47,686 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 [2019-11-26 20:28:48,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 20:28:48,868 INFO L255 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-26 20:28:48,869 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 20:28:49,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 20:28:49,665 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 20:28:53,294 WARN L860 $PredicateComparison]: unable to prove that (= (_ 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)))) is different from true [2019-11-26 20:28:53,893 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 [2019-11-26 20:28:54,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 20:28:54,531 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1975367631] [2019-11-26 20:28:54,532 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-26 20:28:54,532 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 8 [2019-11-26 20:28:54,532 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066170074] [2019-11-26 20:28:54,534 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-26 20:28:54,534 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-26 20:28:54,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-26 20:28:54,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=22, Unknown=2, NotChecked=18, Total=56 [2019-11-26 20:28:54,536 INFO L87 Difference]: Start difference. First operand 29 states and 29 transitions. Second operand 8 states. [2019-11-26 20:28:58,917 WARN L192 SmtUtils]: Spent 2.36 s on a formula simplification that was a NOOP. DAG size: 14 [2019-11-26 20:29:11,947 WARN L192 SmtUtils]: Spent 5.02 s on a formula simplification that was a NOOP. DAG size: 28 [2019-11-26 20:29:25,455 WARN L192 SmtUtils]: Spent 7.78 s on a formula simplification that was a NOOP. DAG size: 35 [2019-11-26 20:29:44,252 WARN L192 SmtUtils]: Spent 15.15 s on a formula simplification. DAG size of input: 36 DAG size of output: 33 [2019-11-26 20:29:46,743 WARN L192 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 15 [2019-11-26 20:30:01,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 20:30:01,350 INFO L93 Difference]: Finished difference Result 33 states and 34 transitions. [2019-11-26 20:30:01,351 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-26 20:30:01,351 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 7 [2019-11-26 20:30:01,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 20:30:01,352 INFO L225 Difference]: With dead ends: 33 [2019-11-26 20:30:01,352 INFO L226 Difference]: Without dead ends: 30 [2019-11-26 20:30:01,353 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 53.2s TimeCoverageRelationStatistics Valid=48, Invalid=89, Unknown=3, NotChecked=42, Total=182 [2019-11-26 20:30:01,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2019-11-26 20:30:01,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 27. [2019-11-26 20:30:01,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2019-11-26 20:30:01,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2019-11-26 20:30:01,362 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 7 [2019-11-26 20:30:01,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 20:30:01,362 INFO L462 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2019-11-26 20:30:01,362 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-26 20:30:01,363 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2019-11-26 20:30:01,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-26 20:30:01,363 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 20:30:01,364 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 20:30:01,567 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2019-11-26 20:30:01,568 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]=== [2019-11-26 20:30:01,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 20:30:01,569 INFO L82 PathProgramCache]: Analyzing trace with hash 731943696, now seen corresponding path program 1 times [2019-11-26 20:30:01,570 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-26 20:30:01,571 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [159653535] [2019-11-26 20:30:01,571 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 [2019-11-26 20:30:02,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-26 20:30:04,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-26 20:30:04,483 INFO L174 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2019-11-26 20:30:04,483 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-26 20:30:04,684 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2019-11-26 20:30:04,703 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.11 08:30:04 BoogieIcfgContainer [2019-11-26 20:30:04,703 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-26 20:30:04,704 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-26 20:30:04,704 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-26 20:30:04,704 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-26 20:30:04,705 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 08:28:24" (3/4) ... [2019-11-26 20:30:04,707 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-26 20:30:04,745 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-26 20:30:04,745 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-26 20:30:04,747 INFO L168 Benchmark]: Toolchain (without parser) took 110458.68 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 103.8 MB). Free memory was 960.4 MB in the beginning and 968.5 MB in the end (delta: -8.1 MB). Peak memory consumption was 95.7 MB. Max. memory is 11.5 GB. [2019-11-26 20:30:04,747 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. [2019-11-26 20:30:04,748 INFO L168 Benchmark]: CACSL2BoogieTranslator took 488.60 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 103.8 MB). Free memory was 960.4 MB in the beginning and 1.1 GB in the end (delta: -126.2 MB). Peak memory consumption was 20.3 MB. Max. memory is 11.5 GB. [2019-11-26 20:30:04,749 INFO L168 Benchmark]: Boogie Procedure Inliner took 76.03 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 20:30:04,749 INFO L168 Benchmark]: Boogie Preprocessor took 61.55 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 20:30:04,750 INFO L168 Benchmark]: RCFGBuilder took 9467.14 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 19.0 MB). Peak memory consumption was 19.0 MB. Max. memory is 11.5 GB. [2019-11-26 20:30:04,751 INFO L168 Benchmark]: TraceAbstraction took 100318.94 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 968.5 MB in the end (delta: 99.1 MB). Peak memory consumption was 99.1 MB. Max. memory is 11.5 GB. [2019-11-26 20:30:04,751 INFO L168 Benchmark]: Witness Printer took 41.08 ms. Allocated memory is still 1.1 GB. Free memory is still 968.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 20:30:04,755 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 488.60 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 103.8 MB). Free memory was 960.4 MB in the beginning and 1.1 GB in the end (delta: -126.2 MB). Peak memory consumption was 20.3 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 76.03 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 61.55 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 9467.14 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 19.0 MB). Peak memory consumption was 19.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 100318.94 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 968.5 MB in the end (delta: 99.1 MB). Peak memory consumption was 99.1 MB. Max. memory is 11.5 GB. * Witness Printer took 41.08 ms. Allocated memory is still 1.1 GB. Free memory is still 968.5 MB. There was no memory consumed. 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: 100.2s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 86.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 41 SDtfs, 41 SDslu, 72 SDs, 0 SdLazy, 68 SolverSat, 24 SolverUnsat, 12 SolverUnknown, 0 SolverNotchecked, 36.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 28 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 56.5s 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, 8 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 2.5s SatisfiabilityAnalysisTime, 8.9s 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...