./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-newlib/double_req_bl_1230.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f470102c 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/float-newlib/double_req_bl_1230.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b865bb4da04412be07ba7e2426d2224bb04a2953 ............................................................................................................................................................................................................................................................................................................................................................... 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/float-newlib/double_req_bl_1230.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b865bb4da04412be07ba7e2426d2224bb04a2953 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-f470102 [2019-11-28 16:49:56,344 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-28 16:49:56,346 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-28 16:49:56,364 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-28 16:49:56,365 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-28 16:49:56,367 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-28 16:49:56,369 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-28 16:49:56,379 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-28 16:49:56,384 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-28 16:49:56,388 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-28 16:49:56,389 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-28 16:49:56,391 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-28 16:49:56,391 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-28 16:49:56,394 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-28 16:49:56,395 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-28 16:49:56,397 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-28 16:49:56,399 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-28 16:49:56,400 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-28 16:49:56,404 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-28 16:49:56,408 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-28 16:49:56,412 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-28 16:49:56,417 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-28 16:49:56,418 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-28 16:49:56,420 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-28 16:49:56,424 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-28 16:49:56,425 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-28 16:49:56,425 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-28 16:49:56,427 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-28 16:49:56,428 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-28 16:49:56,429 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-28 16:49:56,429 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-28 16:49:56,430 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-28 16:49:56,431 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-28 16:49:56,432 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-28 16:49:56,434 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-28 16:49:56,434 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-28 16:49:56,435 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-28 16:49:56,435 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-28 16:49:56,436 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-28 16:49:56,437 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-28 16:49:56,438 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-28 16:49:56,439 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-28 16:49:56,475 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-28 16:49:56,480 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-28 16:49:56,482 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-28 16:49:56,482 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-28 16:49:56,483 INFO L138 SettingsManager]: * Use SBE=true [2019-11-28 16:49:56,483 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-28 16:49:56,483 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-28 16:49:56,484 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-28 16:49:56,484 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-28 16:49:56,484 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-28 16:49:56,485 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-28 16:49:56,485 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-28 16:49:56,486 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-28 16:49:56,486 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-28 16:49:56,486 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-28 16:49:56,487 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-28 16:49:56,487 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-28 16:49:56,487 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-28 16:49:56,488 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-28 16:49:56,488 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-28 16:49:56,488 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-28 16:49:56,488 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-28 16:49:56,489 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-28 16:49:56,489 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-28 16:49:56,490 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-28 16:49:56,490 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-28 16:49:56,490 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-28 16:49:56,490 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-28 16:49:56,491 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-11-28 16:49:56,492 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b865bb4da04412be07ba7e2426d2224bb04a2953 [2019-11-28 16:49:56,818 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-28 16:49:56,831 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-28 16:49:56,834 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-28 16:49:56,836 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-28 16:49:56,837 INFO L275 PluginConnector]: CDTParser initialized [2019-11-28 16:49:56,838 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_1230.c [2019-11-28 16:49:56,901 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1e75ee2c5/f36c5924742b4374b7d37fb8c42b4598/FLAG0d498f887 [2019-11-28 16:49:57,341 INFO L306 CDTParser]: Found 1 translation units. [2019-11-28 16:49:57,342 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_1230.c [2019-11-28 16:49:57,351 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1e75ee2c5/f36c5924742b4374b7d37fb8c42b4598/FLAG0d498f887 [2019-11-28 16:49:57,677 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1e75ee2c5/f36c5924742b4374b7d37fb8c42b4598 [2019-11-28 16:49:57,681 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-28 16:49:57,683 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-28 16:49:57,684 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-28 16:49:57,685 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-28 16:49:57,690 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-28 16:49:57,691 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:49:57" (1/1) ... [2019-11-28 16:49:57,694 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@273f52d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:49:57, skipping insertion in model container [2019-11-28 16:49:57,695 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:49:57" (1/1) ... [2019-11-28 16:49:57,703 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-28 16:49:57,722 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-28 16:49:57,905 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 16:49:57,909 INFO L203 MainTranslator]: Completed pre-run [2019-11-28 16:49:57,934 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 16:49:58,016 INFO L208 MainTranslator]: Completed translation [2019-11-28 16:49:58,016 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:49:58 WrapperNode [2019-11-28 16:49:58,017 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-28 16:49:58,018 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-28 16:49:58,018 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-28 16:49:58,018 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-28 16:49:58,028 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:49:58" (1/1) ... [2019-11-28 16:49:58,036 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:49:58" (1/1) ... [2019-11-28 16:49:58,064 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-28 16:49:58,065 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-28 16:49:58,065 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-28 16:49:58,065 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-28 16:49:58,073 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:49:58" (1/1) ... [2019-11-28 16:49:58,073 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:49:58" (1/1) ... [2019-11-28 16:49:58,075 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:49:58" (1/1) ... [2019-11-28 16:49:58,076 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:49:58" (1/1) ... [2019-11-28 16:49:58,084 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:49:58" (1/1) ... [2019-11-28 16:49:58,089 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:49:58" (1/1) ... [2019-11-28 16:49:58,091 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:49:58" (1/1) ... [2019-11-28 16:49:58,094 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-28 16:49:58,095 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-28 16:49:58,095 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-28 16:49:58,095 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-28 16:49:58,097 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:49:58" (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 [2019-11-28 16:49:58,154 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-28 16:49:58,154 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2019-11-28 16:49:58,154 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-28 16:49:58,155 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-28 16:49:58,155 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-28 16:49:58,155 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-28 16:49:58,573 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-28 16:49:58,573 INFO L287 CfgBuilder]: Removed 16 assume(true) statements. [2019-11-28 16:49:58,574 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:49:58 BoogieIcfgContainer [2019-11-28 16:49:58,574 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-28 16:49:58,576 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-28 16:49:58,576 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-28 16:49:58,579 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-28 16:49:58,580 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 04:49:57" (1/3) ... [2019-11-28 16:49:58,581 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d74c704 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:49:58, skipping insertion in model container [2019-11-28 16:49:58,581 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:49:58" (2/3) ... [2019-11-28 16:49:58,581 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d74c704 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:49:58, skipping insertion in model container [2019-11-28 16:49:58,581 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:49:58" (3/3) ... [2019-11-28 16:49:58,583 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1230.c [2019-11-28 16:49:58,593 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-28 16:49:58,600 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-28 16:49:58,611 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-28 16:49:58,636 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-28 16:49:58,636 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-28 16:49:58,637 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-28 16:49:58,637 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-28 16:49:58,637 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-28 16:49:58,637 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-28 16:49:58,637 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-28 16:49:58,638 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-28 16:49:58,651 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2019-11-28 16:49:58,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-28 16:49:58,657 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 16:49:58,658 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 16:49:58,659 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 16:49:58,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 16:49:58,664 INFO L82 PathProgramCache]: Analyzing trace with hash -958093107, now seen corresponding path program 1 times [2019-11-28 16:49:58,672 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 16:49:58,672 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648708351] [2019-11-28 16:49:58,673 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 16:49:58,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 16:49:58,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 16:49:58,794 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648708351] [2019-11-28 16:49:58,797 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 16:49:58,798 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-28 16:49:58,799 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385424282] [2019-11-28 16:49:58,804 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-28 16:49:58,804 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 16:49:58,818 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-28 16:49:58,819 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-28 16:49:58,822 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 2 states. [2019-11-28 16:49:58,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 16:49:58,842 INFO L93 Difference]: Finished difference Result 54 states and 84 transitions. [2019-11-28 16:49:58,842 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-28 16:49:58,844 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-11-28 16:49:58,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 16:49:58,852 INFO L225 Difference]: With dead ends: 54 [2019-11-28 16:49:58,853 INFO L226 Difference]: Without dead ends: 25 [2019-11-28 16:49:58,856 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-28 16:49:58,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2019-11-28 16:49:58,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2019-11-28 16:49:58,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2019-11-28 16:49:58,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 35 transitions. [2019-11-28 16:49:58,887 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 35 transitions. Word has length 10 [2019-11-28 16:49:58,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 16:49:58,888 INFO L462 AbstractCegarLoop]: Abstraction has 25 states and 35 transitions. [2019-11-28 16:49:58,888 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-28 16:49:58,888 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 35 transitions. [2019-11-28 16:49:58,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-28 16:49:58,889 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 16:49:58,889 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 16:49:58,889 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 16:49:58,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 16:49:58,890 INFO L82 PathProgramCache]: Analyzing trace with hash 1001566992, now seen corresponding path program 1 times [2019-11-28 16:49:58,890 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 16:49:58,890 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735509314] [2019-11-28 16:49:58,891 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 16:49:58,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 16:49:58,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 16:49:58,998 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735509314] [2019-11-28 16:49:58,999 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 16:49:58,999 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-28 16:49:58,999 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511974567] [2019-11-28 16:49:59,001 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-28 16:49:59,001 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 16:49:59,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-28 16:49:59,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-28 16:49:59,002 INFO L87 Difference]: Start difference. First operand 25 states and 35 transitions. Second operand 4 states. [2019-11-28 16:49:59,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 16:49:59,084 INFO L93 Difference]: Finished difference Result 41 states and 52 transitions. [2019-11-28 16:49:59,085 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-28 16:49:59,085 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-11-28 16:49:59,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 16:49:59,086 INFO L225 Difference]: With dead ends: 41 [2019-11-28 16:49:59,086 INFO L226 Difference]: Without dead ends: 36 [2019-11-28 16:49:59,087 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-28 16:49:59,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2019-11-28 16:49:59,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 27. [2019-11-28 16:49:59,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2019-11-28 16:49:59,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 37 transitions. [2019-11-28 16:49:59,095 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 37 transitions. Word has length 11 [2019-11-28 16:49:59,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 16:49:59,095 INFO L462 AbstractCegarLoop]: Abstraction has 27 states and 37 transitions. [2019-11-28 16:49:59,095 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-28 16:49:59,095 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 37 transitions. [2019-11-28 16:49:59,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-11-28 16:49:59,096 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 16:49:59,097 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 16:49:59,097 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 16:49:59,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 16:49:59,097 INFO L82 PathProgramCache]: Analyzing trace with hash -555778251, now seen corresponding path program 1 times [2019-11-28 16:49:59,098 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 16:49:59,098 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442731950] [2019-11-28 16:49:59,098 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 16:49:59,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 16:49:59,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 16:49:59,181 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442731950] [2019-11-28 16:49:59,181 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 16:49:59,181 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-28 16:49:59,181 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580312125] [2019-11-28 16:49:59,182 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-28 16:49:59,182 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 16:49:59,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-28 16:49:59,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-28 16:49:59,183 INFO L87 Difference]: Start difference. First operand 27 states and 37 transitions. Second operand 4 states. [2019-11-28 16:49:59,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 16:49:59,244 INFO L93 Difference]: Finished difference Result 43 states and 54 transitions. [2019-11-28 16:49:59,245 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-28 16:49:59,245 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2019-11-28 16:49:59,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 16:49:59,246 INFO L225 Difference]: With dead ends: 43 [2019-11-28 16:49:59,246 INFO L226 Difference]: Without dead ends: 38 [2019-11-28 16:49:59,247 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-28 16:49:59,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2019-11-28 16:49:59,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 27. [2019-11-28 16:49:59,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2019-11-28 16:49:59,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 37 transitions. [2019-11-28 16:49:59,253 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 37 transitions. Word has length 14 [2019-11-28 16:49:59,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 16:49:59,253 INFO L462 AbstractCegarLoop]: Abstraction has 27 states and 37 transitions. [2019-11-28 16:49:59,253 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-28 16:49:59,254 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 37 transitions. [2019-11-28 16:49:59,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-11-28 16:49:59,254 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 16:49:59,255 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 16:49:59,255 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 16:49:59,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 16:49:59,255 INFO L82 PathProgramCache]: Analyzing trace with hash 1219229111, now seen corresponding path program 1 times [2019-11-28 16:49:59,256 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 16:49:59,256 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166641838] [2019-11-28 16:49:59,256 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 16:49:59,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 16:49:59,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 16:49:59,340 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 16:49:59,340 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-28 16:49:59,372 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 04:49:59 BoogieIcfgContainer [2019-11-28 16:49:59,373 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-28 16:49:59,373 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-28 16:49:59,374 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-28 16:49:59,374 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-28 16:49:59,375 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:49:58" (3/4) ... [2019-11-28 16:49:59,379 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-28 16:49:59,379 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-28 16:49:59,383 INFO L168 Benchmark]: Toolchain (without parser) took 1698.29 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 98.6 MB). Free memory was 955.0 MB in the beginning and 1.0 GB in the end (delta: -59.2 MB). Peak memory consumption was 39.4 MB. Max. memory is 11.5 GB. [2019-11-28 16:49:59,384 INFO L168 Benchmark]: CDTParser took 0.34 ms. Allocated memory is still 1.0 GB. Free memory is still 981.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 16:49:59,385 INFO L168 Benchmark]: CACSL2BoogieTranslator took 332.74 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 98.6 MB). Free memory was 955.0 MB in the beginning and 1.1 GB in the end (delta: -139.6 MB). Peak memory consumption was 20.5 MB. Max. memory is 11.5 GB. [2019-11-28 16:49:59,386 INFO L168 Benchmark]: Boogie Procedure Inliner took 46.83 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: 6.9 MB). Peak memory consumption was 6.9 MB. Max. memory is 11.5 GB. [2019-11-28 16:49:59,387 INFO L168 Benchmark]: Boogie Preprocessor took 29.98 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. [2019-11-28 16:49:59,388 INFO L168 Benchmark]: RCFGBuilder took 479.54 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: 32.2 MB). Peak memory consumption was 32.2 MB. Max. memory is 11.5 GB. [2019-11-28 16:49:59,389 INFO L168 Benchmark]: TraceAbstraction took 796.88 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 41.4 MB). Peak memory consumption was 41.4 MB. Max. memory is 11.5 GB. [2019-11-28 16:49:59,389 INFO L168 Benchmark]: Witness Printer took 6.14 ms. Allocated memory is still 1.1 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 16:49:59,393 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34 ms. Allocated memory is still 1.0 GB. Free memory is still 981.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 332.74 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 98.6 MB). Free memory was 955.0 MB in the beginning and 1.1 GB in the end (delta: -139.6 MB). Peak memory consumption was 20.5 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 46.83 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: 6.9 MB). Peak memory consumption was 6.9 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 29.98 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 479.54 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: 32.2 MB). Peak memory consumption was 32.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 796.88 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 41.4 MB). Peak memory consumption was 41.4 MB. Max. memory is 11.5 GB. * Witness Printer took 6.14 ms. Allocated memory is still 1.1 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 66]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 16, overapproximation of someBinaryArithmeticDOUBLEoperation at line 61. Possible FailurePath: [L61] double x = 0.0 / 0.0; [L62] double y = 0.0 / 0.0; [L18] __uint32_t msw, lsw; [L21] ieee_double_shape_type ew_u; [L22] ew_u.value = (x) [L23] EXPR ew_u.parts.msw [L23] (msw) = ew_u.parts.msw [L24] EXPR ew_u.parts.lsw [L24] (lsw) = ew_u.parts.lsw [L27-L28] COND FALSE !((msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000)) [L30-L31] COND FALSE !((msw >= 0x00100000 && msw <= 0x7fefffff) || (msw >= 0x80100000 && msw <= 0xffefffff)) [L33-L34] COND FALSE !(( msw <= 0x000fffff) || (msw >= 0x80000000 && msw <= 0x800fffff)) [L37-L38] COND FALSE !((msw == 0x7ff00000 && lsw == 0x00000000) || (msw == 0xfff00000 && lsw == 0x00000000)) [L41] return 0; [L45] COND TRUE __fpclassify_double(x) == 0 [L46] return y; [L63] double res = fmin_double(x, y); [L16] return x != x; [L65] COND TRUE !isnan_double(res) [L66] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 28 locations, 1 error locations. Result: UNSAFE, OverallTime: 0.7s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 110 SDtfs, 22 SDslu, 110 SDs, 0 SdLazy, 30 SolverSat, 12 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=28occurred 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, 3 MinimizatonAttempts, 20 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 49 NumberOfCodeBlocks, 49 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 32 ConstructedInterpolants, 0 QuantifiedInterpolants, 442 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 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 0.1.25-f470102 [2019-11-28 16:50:01,330 INFO L177 SettingsManager]: Resetting all preferences to default values... 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[2019-11-28 16:50:01,416 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-28 16:50:01,417 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-28 16:50:01,418 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-28 16:50:01,418 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-28 16:50:01,419 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-28 16:50:01,420 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-28 16:50:01,420 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-28 16:50:01,420 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-28 16:50:01,421 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-28 16:50:01,422 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-28 16:50:01,422 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-28 16:50:01,423 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2019-11-28 16:50:01,440 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-28 16:50:01,440 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-28 16:50:01,441 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-28 16:50:01,442 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-28 16:50:01,442 INFO L138 SettingsManager]: * Use SBE=true [2019-11-28 16:50:01,442 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-28 16:50:01,442 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-28 16:50:01,443 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-28 16:50:01,443 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-28 16:50:01,443 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-28 16:50:01,443 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-28 16:50:01,443 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-28 16:50:01,444 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-28 16:50:01,444 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-28 16:50:01,444 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-28 16:50:01,444 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-28 16:50:01,444 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-28 16:50:01,445 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-28 16:50:01,445 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-28 16:50:01,445 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-28 16:50:01,445 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-28 16:50:01,446 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-28 16:50:01,446 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-28 16:50:01,446 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-28 16:50:01,446 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-28 16:50:01,446 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-28 16:50:01,447 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-11-28 16:50:01,447 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-28 16:50:01,447 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-28 16:50:01,447 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-11-28 16:50:01,448 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-28 16:50:01,448 INFO L138 SettingsManager]: * Logic for external solver=AUFBV Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b865bb4da04412be07ba7e2426d2224bb04a2953 [2019-11-28 16:50:01,756 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-28 16:50:01,777 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-28 16:50:01,783 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-28 16:50:01,785 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-28 16:50:01,786 INFO L275 PluginConnector]: CDTParser initialized [2019-11-28 16:50:01,787 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_1230.c [2019-11-28 16:50:01,865 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6c8fc6b15/60dddba7e9434123820f1d6c3873c7c4/FLAG158a8bc76 [2019-11-28 16:50:02,314 INFO L306 CDTParser]: Found 1 translation units. [2019-11-28 16:50:02,315 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_1230.c [2019-11-28 16:50:02,322 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6c8fc6b15/60dddba7e9434123820f1d6c3873c7c4/FLAG158a8bc76 [2019-11-28 16:50:02,674 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6c8fc6b15/60dddba7e9434123820f1d6c3873c7c4 [2019-11-28 16:50:02,677 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-28 16:50:02,679 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-28 16:50:02,681 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-28 16:50:02,681 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-28 16:50:02,685 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-28 16:50:02,686 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:50:02" (1/1) ... [2019-11-28 16:50:02,689 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67de52c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:50:02, skipping insertion in model container [2019-11-28 16:50:02,689 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:50:02" (1/1) ... [2019-11-28 16:50:02,697 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-28 16:50:02,719 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-28 16:50:02,957 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 16:50:02,966 INFO L203 MainTranslator]: Completed pre-run [2019-11-28 16:50:03,021 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 16:50:03,063 INFO L208 MainTranslator]: Completed translation [2019-11-28 16:50:03,064 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:50:03 WrapperNode [2019-11-28 16:50:03,064 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-28 16:50:03,065 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-28 16:50:03,065 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-28 16:50:03,123 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-28 16:50:03,138 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:50:03" (1/1) ... [2019-11-28 16:50:03,150 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:50:03" (1/1) ... [2019-11-28 16:50:03,187 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-28 16:50:03,188 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-28 16:50:03,188 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-28 16:50:03,188 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-28 16:50:03,196 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:50:03" (1/1) ... [2019-11-28 16:50:03,196 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:50:03" (1/1) ... [2019-11-28 16:50:03,200 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:50:03" (1/1) ... [2019-11-28 16:50:03,201 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:50:03" (1/1) ... [2019-11-28 16:50:03,210 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:50:03" (1/1) ... [2019-11-28 16:50:03,216 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:50:03" (1/1) ... [2019-11-28 16:50:03,218 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:50:03" (1/1) ... [2019-11-28 16:50:03,222 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-28 16:50:03,223 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-28 16:50:03,223 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-28 16:50:03,223 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-28 16:50:03,224 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:50:03" (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 [2019-11-28 16:50:03,287 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2019-11-28 16:50:03,287 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-28 16:50:03,288 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-11-28 16:50:03,288 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-28 16:50:03,288 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-28 16:50:03,288 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-28 16:50:03,702 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-28 16:50:03,703 INFO L287 CfgBuilder]: Removed 16 assume(true) statements. [2019-11-28 16:50:03,704 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:50:03 BoogieIcfgContainer [2019-11-28 16:50:03,705 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-28 16:50:03,706 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-28 16:50:03,706 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-28 16:50:03,709 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-28 16:50:03,709 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 04:50:02" (1/3) ... [2019-11-28 16:50:03,710 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43e1c9b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:50:03, skipping insertion in model container [2019-11-28 16:50:03,710 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:50:03" (2/3) ... [2019-11-28 16:50:03,710 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43e1c9b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:50:03, skipping insertion in model container [2019-11-28 16:50:03,710 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:50:03" (3/3) ... [2019-11-28 16:50:03,712 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1230.c [2019-11-28 16:50:03,721 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-28 16:50:03,729 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-28 16:50:03,743 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-28 16:50:03,766 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-28 16:50:03,766 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-28 16:50:03,766 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-28 16:50:03,767 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-28 16:50:03,767 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-28 16:50:03,767 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-28 16:50:03,767 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-28 16:50:03,768 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-28 16:50:03,783 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2019-11-28 16:50:03,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-28 16:50:03,789 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 16:50:03,790 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 16:50:03,791 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 16:50:03,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 16:50:03,798 INFO L82 PathProgramCache]: Analyzing trace with hash -958093107, now seen corresponding path program 1 times [2019-11-28 16:50:03,810 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-28 16:50:03,810 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [191318555] [2019-11-28 16:50:03,811 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 [2019-11-28 16:50:03,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 16:50:03,924 INFO L264 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 1 conjunts are in the unsatisfiable core [2019-11-28 16:50:03,930 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 16:50:03,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 16:50:03,941 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-11-28 16:50:03,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 16:50:03,946 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [191318555] [2019-11-28 16:50:03,947 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-28 16:50:03,947 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-11-28 16:50:03,948 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071207089] [2019-11-28 16:50:03,952 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-28 16:50:03,953 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-28 16:50:03,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-28 16:50:03,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-28 16:50:03,965 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 2 states. [2019-11-28 16:50:03,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 16:50:03,982 INFO L93 Difference]: Finished difference Result 54 states and 84 transitions. [2019-11-28 16:50:03,983 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-28 16:50:03,984 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-11-28 16:50:03,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 16:50:03,994 INFO L225 Difference]: With dead ends: 54 [2019-11-28 16:50:03,995 INFO L226 Difference]: Without dead ends: 25 [2019-11-28 16:50:03,998 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-28 16:50:04,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2019-11-28 16:50:04,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2019-11-28 16:50:04,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2019-11-28 16:50:04,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 35 transitions. [2019-11-28 16:50:04,030 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 35 transitions. Word has length 10 [2019-11-28 16:50:04,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 16:50:04,030 INFO L462 AbstractCegarLoop]: Abstraction has 25 states and 35 transitions. [2019-11-28 16:50:04,030 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-28 16:50:04,031 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 35 transitions. [2019-11-28 16:50:04,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-28 16:50:04,031 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 16:50:04,032 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 16:50:04,232 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2019-11-28 16:50:04,237 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 16:50:04,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 16:50:04,238 INFO L82 PathProgramCache]: Analyzing trace with hash 1001566992, now seen corresponding path program 1 times [2019-11-28 16:50:04,240 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-28 16:50:04,240 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [898493801] [2019-11-28 16:50:04,240 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 [2019-11-28 16:50:04,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 16:50:04,350 INFO L264 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-28 16:50:04,352 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 16:50:04,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 16:50:04,402 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-11-28 16:50:04,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 16:50:04,435 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [898493801] [2019-11-28 16:50:04,436 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-28 16:50:04,436 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2019-11-28 16:50:04,436 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935807649] [2019-11-28 16:50:04,439 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-28 16:50:04,440 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-28 16:50:04,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-28 16:50:04,440 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-28 16:50:04,440 INFO L87 Difference]: Start difference. First operand 25 states and 35 transitions. Second operand 6 states. [2019-11-28 16:50:04,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 16:50:04,589 INFO L93 Difference]: Finished difference Result 52 states and 65 transitions. [2019-11-28 16:50:04,591 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-28 16:50:04,592 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2019-11-28 16:50:04,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 16:50:04,593 INFO L225 Difference]: With dead ends: 52 [2019-11-28 16:50:04,593 INFO L226 Difference]: Without dead ends: 47 [2019-11-28 16:50:04,596 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-11-28 16:50:04,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2019-11-28 16:50:04,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 27. [2019-11-28 16:50:04,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2019-11-28 16:50:04,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 37 transitions. [2019-11-28 16:50:04,613 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 37 transitions. Word has length 11 [2019-11-28 16:50:04,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 16:50:04,615 INFO L462 AbstractCegarLoop]: Abstraction has 27 states and 37 transitions. [2019-11-28 16:50:04,615 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-28 16:50:04,615 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 37 transitions. [2019-11-28 16:50:04,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-11-28 16:50:04,617 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 16:50:04,617 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 16:50:04,832 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2019-11-28 16:50:04,833 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 16:50:04,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 16:50:04,834 INFO L82 PathProgramCache]: Analyzing trace with hash 1219229111, now seen corresponding path program 1 times [2019-11-28 16:50:04,836 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-28 16:50:04,836 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [343214647] [2019-11-28 16:50:04,837 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 [2019-11-28 16:50:04,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 16:50:04,925 INFO L264 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 10 conjunts are in the unsatisfiable core [2019-11-28 16:50:04,927 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 16:50:04,993 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-28 16:50:05,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 16:50:05,054 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-11-28 16:50:05,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 16:50:05,178 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [343214647] [2019-11-28 16:50:05,178 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-28 16:50:05,179 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2019-11-28 16:50:05,179 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024555911] [2019-11-28 16:50:05,180 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-28 16:50:05,180 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-28 16:50:05,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-28 16:50:05,181 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2019-11-28 16:50:05,181 INFO L87 Difference]: Start difference. First operand 27 states and 37 transitions. Second operand 10 states. [2019-11-28 16:50:05,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 16:50:05,580 INFO L93 Difference]: Finished difference Result 36 states and 45 transitions. [2019-11-28 16:50:05,580 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-28 16:50:05,581 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 14 [2019-11-28 16:50:05,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 16:50:05,582 INFO L225 Difference]: With dead ends: 36 [2019-11-28 16:50:05,582 INFO L226 Difference]: Without dead ends: 27 [2019-11-28 16:50:05,583 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2019-11-28 16:50:05,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2019-11-28 16:50:05,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 25. [2019-11-28 16:50:05,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2019-11-28 16:50:05,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 33 transitions. [2019-11-28 16:50:05,589 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 33 transitions. Word has length 14 [2019-11-28 16:50:05,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 16:50:05,590 INFO L462 AbstractCegarLoop]: Abstraction has 25 states and 33 transitions. [2019-11-28 16:50:05,590 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-28 16:50:05,590 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 33 transitions. [2019-11-28 16:50:05,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-11-28 16:50:05,591 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 16:50:05,591 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 16:50:05,805 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2019-11-28 16:50:05,805 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 16:50:05,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 16:50:05,806 INFO L82 PathProgramCache]: Analyzing trace with hash 1012428811, now seen corresponding path program 1 times [2019-11-28 16:50:05,807 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-28 16:50:05,807 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [310968576] [2019-11-28 16:50:05,807 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2019-11-28 16:50:05,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 16:50:05,925 INFO L264 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-28 16:50:05,927 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 16:50:05,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 16:50:05,940 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-11-28 16:50:05,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 16:50:05,962 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [310968576] [2019-11-28 16:50:05,963 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-28 16:50:05,963 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2019-11-28 16:50:05,963 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632233211] [2019-11-28 16:50:05,964 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-28 16:50:05,964 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-28 16:50:05,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-28 16:50:05,965 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-28 16:50:05,965 INFO L87 Difference]: Start difference. First operand 25 states and 33 transitions. Second operand 6 states. [2019-11-28 16:50:06,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 16:50:06,049 INFO L93 Difference]: Finished difference Result 52 states and 59 transitions. [2019-11-28 16:50:06,049 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-28 16:50:06,050 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2019-11-28 16:50:06,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 16:50:06,051 INFO L225 Difference]: With dead ends: 52 [2019-11-28 16:50:06,051 INFO L226 Difference]: Without dead ends: 47 [2019-11-28 16:50:06,052 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-11-28 16:50:06,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2019-11-28 16:50:06,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 27. [2019-11-28 16:50:06,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2019-11-28 16:50:06,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 35 transitions. [2019-11-28 16:50:06,059 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 35 transitions. Word has length 16 [2019-11-28 16:50:06,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 16:50:06,059 INFO L462 AbstractCegarLoop]: Abstraction has 27 states and 35 transitions. [2019-11-28 16:50:06,059 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-28 16:50:06,060 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 35 transitions. [2019-11-28 16:50:06,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-11-28 16:50:06,061 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 16:50:06,061 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 16:50:06,274 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2019-11-28 16:50:06,274 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 16:50:06,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 16:50:06,275 INFO L82 PathProgramCache]: Analyzing trace with hash -356841937, now seen corresponding path program 1 times [2019-11-28 16:50:06,275 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-28 16:50:06,276 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [6717015] [2019-11-28 16:50:06,276 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2019-11-28 16:50:06,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 16:50:06,392 INFO L264 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 11 conjunts are in the unsatisfiable core [2019-11-28 16:50:06,394 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 16:50:06,465 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-28 16:50:06,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 16:50:06,526 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-11-28 16:50:06,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 16:50:06,711 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [6717015] [2019-11-28 16:50:06,712 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-28 16:50:06,712 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 12 [2019-11-28 16:50:06,712 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646758418] [2019-11-28 16:50:06,713 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-11-28 16:50:06,713 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-28 16:50:06,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-11-28 16:50:06,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2019-11-28 16:50:06,714 INFO L87 Difference]: Start difference. First operand 27 states and 35 transitions. Second operand 12 states. [2019-11-28 16:50:07,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 16:50:07,206 INFO L93 Difference]: Finished difference Result 32 states and 39 transitions. [2019-11-28 16:50:07,206 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-28 16:50:07,207 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 18 [2019-11-28 16:50:07,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 16:50:07,208 INFO L225 Difference]: With dead ends: 32 [2019-11-28 16:50:07,208 INFO L226 Difference]: Without dead ends: 23 [2019-11-28 16:50:07,209 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 3 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2019-11-28 16:50:07,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2019-11-28 16:50:07,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2019-11-28 16:50:07,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2019-11-28 16:50:07,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2019-11-28 16:50:07,213 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 18 [2019-11-28 16:50:07,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 16:50:07,213 INFO L462 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2019-11-28 16:50:07,214 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-11-28 16:50:07,214 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2019-11-28 16:50:07,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-11-28 16:50:07,214 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 16:50:07,215 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 16:50:07,420 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2019-11-28 16:50:07,421 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-28 16:50:07,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 16:50:07,422 INFO L82 PathProgramCache]: Analyzing trace with hash -208376157, now seen corresponding path program 1 times [2019-11-28 16:50:07,423 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-28 16:50:07,424 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [421693412] [2019-11-28 16:50:07,424 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2019-11-28 16:50:07,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 16:50:07,583 INFO L264 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 10 conjunts are in the unsatisfiable core [2019-11-28 16:50:07,585 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 16:50:07,648 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-28 16:50:07,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 16:50:07,693 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-11-28 16:50:07,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 16:50:07,791 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [421693412] [2019-11-28 16:50:07,791 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-28 16:50:07,791 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2019-11-28 16:50:07,792 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960457373] [2019-11-28 16:50:07,792 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-28 16:50:07,792 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-28 16:50:07,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-28 16:50:07,793 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2019-11-28 16:50:07,793 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand 10 states. [2019-11-28 16:50:08,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 16:50:08,029 INFO L93 Difference]: Finished difference Result 23 states and 26 transitions. [2019-11-28 16:50:08,029 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-28 16:50:08,029 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 19 [2019-11-28 16:50:08,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 16:50:08,033 INFO L225 Difference]: With dead ends: 23 [2019-11-28 16:50:08,033 INFO L226 Difference]: Without dead ends: 0 [2019-11-28 16:50:08,034 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2019-11-28 16:50:08,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-28 16:50:08,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-28 16:50:08,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-28 16:50:08,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-28 16:50:08,035 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2019-11-28 16:50:08,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 16:50:08,035 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-28 16:50:08,035 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-28 16:50:08,035 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-28 16:50:08,035 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-28 16:50:08,244 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2019-11-28 16:50:08,248 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-28 16:50:08,592 INFO L246 CegarLoopResult]: For program point L65(lines 65 68) no Hoare annotation was computed. [2019-11-28 16:50:08,592 INFO L246 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2019-11-28 16:50:08,593 INFO L246 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-11-28 16:50:08,593 INFO L246 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-28 16:50:08,593 INFO L246 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 66) no Hoare annotation was computed. [2019-11-28 16:50:08,593 INFO L246 CegarLoopResult]: For program point L20-1(lines 20 25) no Hoare annotation was computed. [2019-11-28 16:50:08,593 INFO L242 CegarLoopResult]: At program point L20-2(lines 20 25) the Hoare annotation is: (and (not (fp.eq ULTIMATE.start_fmin_double_~y ULTIMATE.start_fmin_double_~y)) (not (fp.eq ULTIMATE.start_fmin_double_~x ULTIMATE.start_fmin_double_~x))) [2019-11-28 16:50:08,594 INFO L246 CegarLoopResult]: For program point L20-3(lines 17 42) no Hoare annotation was computed. [2019-11-28 16:50:08,594 INFO L242 CegarLoopResult]: At program point L16(line 16) the Hoare annotation is: (and (exists ((currentRoundingMode RoundingMode)) (= ULTIMATE.start_fmin_double_~y (fp.div currentRoundingMode (_ +zero 11 53) (_ +zero 11 53)))) (not (fp.eq |ULTIMATE.start_fmin_double_#res| |ULTIMATE.start_fmin_double_#res|)) (= (_ bv1 32) |ULTIMATE.start_isnan_double_#res|)) [2019-11-28 16:50:08,594 INFO L246 CegarLoopResult]: For program point L20-5(lines 20 25) no Hoare annotation was computed. [2019-11-28 16:50:08,594 INFO L242 CegarLoopResult]: At program point L20-6(lines 20 25) the Hoare annotation is: (and (not (fp.eq ULTIMATE.start_fmin_double_~y ULTIMATE.start_fmin_double_~y)) (not (fp.eq ULTIMATE.start_fmin_double_~x ULTIMATE.start_fmin_double_~x))) [2019-11-28 16:50:08,595 INFO L246 CegarLoopResult]: For program point L45(lines 45 46) no Hoare annotation was computed. [2019-11-28 16:50:08,595 INFO L246 CegarLoopResult]: For program point L20-7(lines 17 42) no Hoare annotation was computed. [2019-11-28 16:50:08,595 INFO L242 CegarLoopResult]: At program point L41(lines 17 42) the Hoare annotation is: (and (not (fp.eq ULTIMATE.start_fmin_double_~y ULTIMATE.start_fmin_double_~y)) (not (fp.eq ULTIMATE.start_fmin_double_~x ULTIMATE.start_fmin_double_~x))) [2019-11-28 16:50:08,595 INFO L242 CegarLoopResult]: At program point L41-1(lines 17 42) the Hoare annotation is: (let ((.cse0 (not (fp.eq ULTIMATE.start_fmin_double_~y ULTIMATE.start_fmin_double_~y)))) (or (and .cse0 (not (= (_ bv0 32) |ULTIMATE.start___fpclassify_double_#res|))) (and .cse0 (not (fp.eq ULTIMATE.start_fmin_double_~x ULTIMATE.start_fmin_double_~x))))) [2019-11-28 16:50:08,596 INFO L249 CegarLoopResult]: At program point L70(lines 53 71) the Hoare annotation is: true [2019-11-28 16:50:08,596 INFO L246 CegarLoopResult]: For program point L37(lines 37 41) no Hoare annotation was computed. [2019-11-28 16:50:08,596 INFO L246 CegarLoopResult]: For program point L37-1(lines 37 41) no Hoare annotation was computed. [2019-11-28 16:50:08,596 INFO L246 CegarLoopResult]: For program point L66(line 66) no Hoare annotation was computed. [2019-11-28 16:50:08,596 INFO L246 CegarLoopResult]: For program point L33(lines 33 41) no Hoare annotation was computed. [2019-11-28 16:50:08,597 INFO L246 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-28 16:50:08,597 INFO L246 CegarLoopResult]: For program point L33-1(lines 33 41) no Hoare annotation was computed. [2019-11-28 16:50:08,597 INFO L246 CegarLoopResult]: For program point L50(line 50) no Hoare annotation was computed. [2019-11-28 16:50:08,597 INFO L246 CegarLoopResult]: For program point L50-2(line 50) no Hoare annotation was computed. [2019-11-28 16:50:08,597 INFO L242 CegarLoopResult]: At program point L50-3(lines 44 51) the Hoare annotation is: (and (exists ((currentRoundingMode RoundingMode)) (= ULTIMATE.start_fmin_double_~y (fp.div currentRoundingMode (_ +zero 11 53) (_ +zero 11 53)))) (not (fp.eq |ULTIMATE.start_fmin_double_#res| |ULTIMATE.start_fmin_double_#res|))) [2019-11-28 16:50:08,597 INFO L246 CegarLoopResult]: For program point L30(lines 30 41) no Hoare annotation was computed. [2019-11-28 16:50:08,597 INFO L246 CegarLoopResult]: For program point L30-1(lines 30 41) no Hoare annotation was computed. [2019-11-28 16:50:08,597 INFO L246 CegarLoopResult]: For program point L47(lines 47 48) no Hoare annotation was computed. [2019-11-28 16:50:08,604 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2019-11-28 16:50:08,610 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2019-11-28 16:50:08,612 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2019-11-28 16:50:08,613 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2019-11-28 16:50:08,618 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 04:50:08 BoogieIcfgContainer [2019-11-28 16:50:08,618 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-28 16:50:08,619 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-28 16:50:08,619 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-28 16:50:08,619 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-28 16:50:08,620 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:50:03" (3/4) ... [2019-11-28 16:50:08,623 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-28 16:50:08,637 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2019-11-28 16:50:08,638 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2019-11-28 16:50:08,638 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-11-28 16:50:08,666 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (\exists currentRoundingMode : FloatRoundingMode :: y == ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) && !~fp.eq~DOUBLE(\result, \result) [2019-11-28 16:50:08,667 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((\exists currentRoundingMode : FloatRoundingMode :: y == ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) && !~fp.eq~DOUBLE(\result, \result)) && 1bv32 == \result [2019-11-28 16:50:08,667 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (!~fp.eq~DOUBLE(y, y) && !(0bv32 == \result)) || (!~fp.eq~DOUBLE(y, y) && !~fp.eq~DOUBLE(x, x)) [2019-11-28 16:50:08,709 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-28 16:50:08,709 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-28 16:50:08,714 INFO L168 Benchmark]: Toolchain (without parser) took 6032.20 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 143.1 MB). Free memory was 955.0 MB in the beginning and 888.5 MB in the end (delta: 66.5 MB). Peak memory consumption was 209.6 MB. Max. memory is 11.5 GB. [2019-11-28 16:50:08,715 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 1.0 GB. Free memory is still 981.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 16:50:08,716 INFO L168 Benchmark]: CACSL2BoogieTranslator took 383.60 ms. Allocated memory is still 1.0 GB. Free memory was 955.0 MB in the beginning and 944.3 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-11-28 16:50:08,716 INFO L168 Benchmark]: Boogie Procedure Inliner took 122.25 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 143.1 MB). Free memory was 944.3 MB in the beginning and 1.1 GB in the end (delta: -187.3 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. [2019-11-28 16:50:08,717 INFO L168 Benchmark]: Boogie Preprocessor took 35.00 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. [2019-11-28 16:50:08,718 INFO L168 Benchmark]: RCFGBuilder took 481.72 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: 24.1 MB). Peak memory consumption was 24.1 MB. Max. memory is 11.5 GB. [2019-11-28 16:50:08,723 INFO L168 Benchmark]: TraceAbstraction took 4912.73 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 895.1 MB in the end (delta: 212.4 MB). Peak memory consumption was 212.4 MB. Max. memory is 11.5 GB. [2019-11-28 16:50:08,724 INFO L168 Benchmark]: Witness Printer took 90.54 ms. Allocated memory is still 1.2 GB. Free memory was 895.1 MB in the beginning and 888.5 MB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. [2019-11-28 16:50:08,731 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 1.0 GB. Free memory is still 981.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 383.60 ms. Allocated memory is still 1.0 GB. Free memory was 955.0 MB in the beginning and 944.3 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 122.25 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 143.1 MB). Free memory was 944.3 MB in the beginning and 1.1 GB in the end (delta: -187.3 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 35.00 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 481.72 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: 24.1 MB). Peak memory consumption was 24.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 4912.73 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 895.1 MB in the end (delta: 212.4 MB). Peak memory consumption was 212.4 MB. Max. memory is 11.5 GB. * Witness Printer took 90.54 ms. Allocated memory is still 1.2 GB. Free memory was 895.1 MB in the beginning and 888.5 MB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 66]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 44]: Loop Invariant [2019-11-28 16:50:08,741 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2019-11-28 16:50:08,747 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] Derived loop invariant: (\exists currentRoundingMode : FloatRoundingMode :: y == ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) && !~fp.eq~DOUBLE(\result, \result) - InvariantResult [Line: 16]: Loop Invariant [2019-11-28 16:50:08,747 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2019-11-28 16:50:08,748 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] Derived loop invariant: ((\exists currentRoundingMode : FloatRoundingMode :: y == ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE())) && !~fp.eq~DOUBLE(\result, \result)) && 1bv32 == \result - InvariantResult [Line: 53]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: !~fp.eq~DOUBLE(y, y) && !~fp.eq~DOUBLE(x, x) - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: (!~fp.eq~DOUBLE(y, y) && !(0bv32 == \result)) || (!~fp.eq~DOUBLE(y, y) && !~fp.eq~DOUBLE(x, x)) - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: !~fp.eq~DOUBLE(y, y) && !~fp.eq~DOUBLE(x, x) - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: !~fp.eq~DOUBLE(y, y) && !~fp.eq~DOUBLE(x, x) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 28 locations, 1 error locations. Result: SAFE, OverallTime: 4.4s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 1.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, HoareTripleCheckerStatistics: 182 SDtfs, 107 SDslu, 476 SDs, 0 SdLazy, 126 SolverSat, 18 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 181 GetRequests, 130 SyntacticMatches, 3 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 7 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 1.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=28occurred 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, 6 MinimizatonAttempts, 42 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 7 PreInvPairs, 19 NumberOfFragments, 74 HoareAnnotationTreeSize, 7 FomulaSimplifications, 184 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 7 FomulaSimplificationsInter, 39 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 88 NumberOfCodeBlocks, 88 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 164 ConstructedInterpolants, 36 QuantifiedInterpolants, 8562 SizeOfPredicates, 32 NumberOfNonLiveVariables, 309 ConjunctsInSsa, 38 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 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 correct! Received shutdown request...