./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-newlib/float_req_bl_1232b.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 30f4e4ab 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/float_req_bl_1232b.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 36a0a55241cede481b157c1ab9f348d708a5b166 .......................................................................................................................................................................................................................................................................................................................................................... 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/float_req_bl_1232b.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 36a0a55241cede481b157c1ab9f348d708a5b166 ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.1.24-30f4e4a [2019-11-27 23:51:08,686 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-27 23:51:08,688 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-27 23:51:08,703 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-27 23:51:08,704 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-27 23:51:08,706 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-27 23:51:08,708 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-27 23:51:08,721 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-27 23:51:08,722 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-27 23:51:08,724 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-27 23:51:08,725 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-27 23:51:08,727 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-27 23:51:08,728 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-27 23:51:08,731 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-27 23:51:08,733 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-27 23:51:08,736 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-27 23:51:08,737 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-27 23:51:08,738 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-27 23:51:08,742 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-27 23:51:08,748 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-27 23:51:08,750 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-27 23:51:08,754 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-27 23:51:08,756 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-27 23:51:08,758 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-27 23:51:08,762 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-27 23:51:08,763 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-27 23:51:08,763 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-27 23:51:08,765 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-27 23:51:08,765 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-27 23:51:08,768 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-27 23:51:08,768 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-27 23:51:08,769 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-27 23:51:08,770 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-27 23:51:08,770 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-27 23:51:08,775 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-27 23:51:08,775 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-27 23:51:08,776 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-27 23:51:08,777 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-27 23:51:08,777 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-27 23:51:08,779 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-27 23:51:08,781 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-27 23:51:08,781 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-27 23:51:08,802 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-27 23:51:08,803 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-27 23:51:08,804 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-27 23:51:08,804 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-27 23:51:08,804 INFO L138 SettingsManager]: * Use SBE=true [2019-11-27 23:51:08,805 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-27 23:51:08,805 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-27 23:51:08,805 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-27 23:51:08,805 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-27 23:51:08,806 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-27 23:51:08,806 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-27 23:51:08,806 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-27 23:51:08,806 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-27 23:51:08,806 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-27 23:51:08,807 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-27 23:51:08,807 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-27 23:51:08,807 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-27 23:51:08,807 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-27 23:51:08,808 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-27 23:51:08,808 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-27 23:51:08,808 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-27 23:51:08,808 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-27 23:51:08,808 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-27 23:51:08,809 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-27 23:51:08,809 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-27 23:51:08,809 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-27 23:51:08,809 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-27 23:51:08,809 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-27 23:51:08,810 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 -> 36a0a55241cede481b157c1ab9f348d708a5b166 [2019-11-27 23:51:09,110 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-27 23:51:09,131 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-27 23:51:09,135 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-27 23:51:09,137 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-27 23:51:09,138 INFO L275 PluginConnector]: CDTParser initialized [2019-11-27 23:51:09,139 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/float_req_bl_1232b.c [2019-11-27 23:51:09,215 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/48c40ff9f/208e5dce24ee4d1d8ace65f4f1bead17/FLAGf86f87f85 [2019-11-27 23:51:09,703 INFO L306 CDTParser]: Found 1 translation units. [2019-11-27 23:51:09,704 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/float_req_bl_1232b.c [2019-11-27 23:51:09,711 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/48c40ff9f/208e5dce24ee4d1d8ace65f4f1bead17/FLAGf86f87f85 [2019-11-27 23:51:10,081 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/48c40ff9f/208e5dce24ee4d1d8ace65f4f1bead17 [2019-11-27 23:51:10,085 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-27 23:51:10,087 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-27 23:51:10,088 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-27 23:51:10,088 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-27 23:51:10,092 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-27 23:51:10,093 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:51:10" (1/1) ... [2019-11-27 23:51:10,096 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@484d7b50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:51:10, skipping insertion in model container [2019-11-27 23:51:10,096 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:51:10" (1/1) ... [2019-11-27 23:51:10,105 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-27 23:51:10,124 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-27 23:51:10,330 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-27 23:51:10,334 INFO L203 MainTranslator]: Completed pre-run [2019-11-27 23:51:10,362 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-27 23:51:10,447 INFO L208 MainTranslator]: Completed translation [2019-11-27 23:51:10,448 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:51:10 WrapperNode [2019-11-27 23:51:10,449 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-27 23:51:10,450 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-27 23:51:10,450 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-27 23:51:10,450 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-27 23:51:10,458 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:51:10" (1/1) ... [2019-11-27 23:51:10,466 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:51:10" (1/1) ... [2019-11-27 23:51:10,493 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-27 23:51:10,494 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-27 23:51:10,494 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-27 23:51:10,494 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-27 23:51:10,501 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:51:10" (1/1) ... [2019-11-27 23:51:10,502 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:51:10" (1/1) ... [2019-11-27 23:51:10,504 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:51:10" (1/1) ... [2019-11-27 23:51:10,504 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:51:10" (1/1) ... [2019-11-27 23:51:10,512 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:51:10" (1/1) ... [2019-11-27 23:51:10,518 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:51:10" (1/1) ... [2019-11-27 23:51:10,519 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:51:10" (1/1) ... [2019-11-27 23:51:10,522 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-27 23:51:10,523 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-27 23:51:10,523 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-27 23:51:10,523 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-27 23:51:10,524 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:51:10" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-27 23:51:10,581 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-27 23:51:10,581 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2019-11-27 23:51:10,581 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-27 23:51:10,581 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-27 23:51:10,581 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-27 23:51:10,582 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-27 23:51:10,984 INFO L292 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-27 23:51:10,984 INFO L297 CfgBuilder]: Removed 18 assume(true) statements. [2019-11-27 23:51:10,986 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:51:10 BoogieIcfgContainer [2019-11-27 23:51:10,986 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-27 23:51:10,987 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-27 23:51:10,987 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-27 23:51:10,990 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-27 23:51:10,990 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.11 11:51:10" (1/3) ... [2019-11-27 23:51:10,991 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e5d9fcb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 11:51:10, skipping insertion in model container [2019-11-27 23:51:10,991 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:51:10" (2/3) ... [2019-11-27 23:51:10,991 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e5d9fcb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 11:51:10, skipping insertion in model container [2019-11-27 23:51:10,992 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:51:10" (3/3) ... [2019-11-27 23:51:10,993 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1232b.c [2019-11-27 23:51:11,001 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-27 23:51:11,008 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-27 23:51:11,020 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-27 23:51:11,043 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-27 23:51:11,044 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-27 23:51:11,044 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-27 23:51:11,044 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-27 23:51:11,044 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-27 23:51:11,044 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-27 23:51:11,045 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-27 23:51:11,045 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-27 23:51:11,058 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2019-11-27 23:51:11,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-27 23:51:11,064 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 23:51:11,064 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-27 23:51:11,065 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-27 23:51:11,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 23:51:11,071 INFO L82 PathProgramCache]: Analyzing trace with hash -958075201, now seen corresponding path program 1 times [2019-11-27 23:51:11,078 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-27 23:51:11,079 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357433823] [2019-11-27 23:51:11,079 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-27 23:51:11,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-27 23:51:11,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-27 23:51:11,198 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357433823] [2019-11-27 23:51:11,198 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-27 23:51:11,199 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-27 23:51:11,199 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297332455] [2019-11-27 23:51:11,203 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-27 23:51:11,204 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-27 23:51:11,213 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-27 23:51:11,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-27 23:51:11,216 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 2 states. [2019-11-27 23:51:11,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-27 23:51:11,234 INFO L93 Difference]: Finished difference Result 62 states and 98 transitions. [2019-11-27 23:51:11,234 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-27 23:51:11,235 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-11-27 23:51:11,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-27 23:51:11,246 INFO L225 Difference]: With dead ends: 62 [2019-11-27 23:51:11,247 INFO L226 Difference]: Without dead ends: 29 [2019-11-27 23:51:11,250 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 [2019-11-27 23:51:11,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2019-11-27 23:51:11,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2019-11-27 23:51:11,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2019-11-27 23:51:11,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 40 transitions. [2019-11-27 23:51:11,295 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 40 transitions. Word has length 10 [2019-11-27 23:51:11,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-27 23:51:11,295 INFO L462 AbstractCegarLoop]: Abstraction has 29 states and 40 transitions. [2019-11-27 23:51:11,296 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-27 23:51:11,296 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 40 transitions. [2019-11-27 23:51:11,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-27 23:51:11,296 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 23:51:11,297 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-27 23:51:11,297 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-27 23:51:11,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 23:51:11,297 INFO L82 PathProgramCache]: Analyzing trace with hash 1001584898, now seen corresponding path program 1 times [2019-11-27 23:51:11,298 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-27 23:51:11,298 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555329584] [2019-11-27 23:51:11,298 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-27 23:51:11,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-27 23:51:11,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-27 23:51:11,380 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555329584] [2019-11-27 23:51:11,380 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-27 23:51:11,380 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-27 23:51:11,380 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234772808] [2019-11-27 23:51:11,382 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-27 23:51:11,382 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-27 23:51:11,383 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-27 23:51:11,383 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-27 23:51:11,383 INFO L87 Difference]: Start difference. First operand 29 states and 40 transitions. Second operand 4 states. [2019-11-27 23:51:11,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-27 23:51:11,483 INFO L93 Difference]: Finished difference Result 53 states and 67 transitions. [2019-11-27 23:51:11,483 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-27 23:51:11,483 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-11-27 23:51:11,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-27 23:51:11,485 INFO L225 Difference]: With dead ends: 53 [2019-11-27 23:51:11,485 INFO L226 Difference]: Without dead ends: 44 [2019-11-27 23:51:11,486 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 [2019-11-27 23:51:11,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2019-11-27 23:51:11,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 31. [2019-11-27 23:51:11,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-11-27 23:51:11,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2019-11-27 23:51:11,494 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 11 [2019-11-27 23:51:11,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-27 23:51:11,495 INFO L462 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2019-11-27 23:51:11,495 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-27 23:51:11,495 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2019-11-27 23:51:11,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-11-27 23:51:11,496 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 23:51:11,496 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-27 23:51:11,497 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-27 23:51:11,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 23:51:11,497 INFO L82 PathProgramCache]: Analyzing trace with hash -555760345, now seen corresponding path program 1 times [2019-11-27 23:51:11,498 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-27 23:51:11,498 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171097184] [2019-11-27 23:51:11,498 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-27 23:51:11,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-27 23:51:11,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-27 23:51:11,561 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171097184] [2019-11-27 23:51:11,563 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-27 23:51:11,563 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-27 23:51:11,564 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619966181] [2019-11-27 23:51:11,564 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-27 23:51:11,565 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-27 23:51:11,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-27 23:51:11,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-27 23:51:11,566 INFO L87 Difference]: Start difference. First operand 31 states and 42 transitions. Second operand 4 states. [2019-11-27 23:51:11,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-27 23:51:11,625 INFO L93 Difference]: Finished difference Result 55 states and 69 transitions. [2019-11-27 23:51:11,626 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-27 23:51:11,626 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2019-11-27 23:51:11,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-27 23:51:11,627 INFO L225 Difference]: With dead ends: 55 [2019-11-27 23:51:11,627 INFO L226 Difference]: Without dead ends: 46 [2019-11-27 23:51:11,628 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 [2019-11-27 23:51:11,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2019-11-27 23:51:11,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 31. [2019-11-27 23:51:11,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-11-27 23:51:11,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2019-11-27 23:51:11,634 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 14 [2019-11-27 23:51:11,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-27 23:51:11,634 INFO L462 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2019-11-27 23:51:11,634 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-27 23:51:11,634 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2019-11-27 23:51:11,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-11-27 23:51:11,635 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 23:51:11,635 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-27 23:51:11,636 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-27 23:51:11,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 23:51:11,636 INFO L82 PathProgramCache]: Analyzing trace with hash 1219247017, now seen corresponding path program 1 times [2019-11-27 23:51:11,636 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-27 23:51:11,637 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663733869] [2019-11-27 23:51:11,637 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-27 23:51:11,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-27 23:51:11,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-27 23:51:11,723 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-27 23:51:11,724 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-27 23:51:11,754 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.11 11:51:11 BoogieIcfgContainer [2019-11-27 23:51:11,754 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-27 23:51:11,755 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-27 23:51:11,755 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-27 23:51:11,755 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-27 23:51:11,755 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:51:10" (3/4) ... [2019-11-27 23:51:11,758 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-27 23:51:11,758 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-27 23:51:11,761 INFO L168 Benchmark]: Toolchain (without parser) took 1673.45 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 119.0 MB). Free memory was 960.4 MB in the beginning and 1.0 GB in the end (delta: -79.4 MB). Peak memory consumption was 39.6 MB. Max. memory is 11.5 GB. [2019-11-27 23:51:11,762 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-27 23:51:11,763 INFO L168 Benchmark]: CACSL2BoogieTranslator took 361.07 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 119.0 MB). Free memory was 960.4 MB in the beginning and 1.1 GB in the end (delta: -154.8 MB). Peak memory consumption was 20.5 MB. Max. memory is 11.5 GB. [2019-11-27 23:51:11,763 INFO L168 Benchmark]: Boogie Procedure Inliner took 43.50 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: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. [2019-11-27 23:51:11,764 INFO L168 Benchmark]: Boogie Preprocessor took 29.03 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-27 23:51:11,765 INFO L168 Benchmark]: RCFGBuilder took 462.85 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: 27.6 MB). Peak memory consumption was 27.6 MB. Max. memory is 11.5 GB. [2019-11-27 23:51:11,766 INFO L168 Benchmark]: TraceAbstraction took 767.60 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: 40.9 MB). Peak memory consumption was 40.9 MB. Max. memory is 11.5 GB. [2019-11-27 23:51:11,766 INFO L168 Benchmark]: Witness Printer took 3.86 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. [2019-11-27 23:51:11,770 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 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 361.07 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 119.0 MB). Free memory was 960.4 MB in the beginning and 1.1 GB in the end (delta: -154.8 MB). Peak memory consumption was 20.5 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 43.50 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: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 29.03 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 462.85 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: 27.6 MB). Peak memory consumption was 27.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 767.60 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: 40.9 MB). Peak memory consumption was 40.9 MB. Max. memory is 11.5 GB. * Witness Printer took 3.86 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: 70]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 69, overapproximation of someUnaryFLOAToperation at line 64. Possible FailurePath: [L64] float x = -0.0f; [L65] float y = 0.0f; [L13] __uint32_t w; [L16] ieee_float_shape_type gf_u; [L17] gf_u.value = (x) [L18] EXPR gf_u.word [L18] (w) = gf_u.word [L21] COND FALSE !(w == 0x00000000 || w == 0x80000000) [L23-L24] COND FALSE !((w >= 0x00800000 && w <= 0x7f7fffff) || (w >= 0x80800000 && w <= 0xff7fffff)) [L26-L27] COND FALSE !((w >= 0x00000001 && w <= 0x007fffff) || (w >= 0x80000001 && w <= 0x807fffff)) [L29] COND FALSE !(w == 0x7f800000 || w == 0xff800000) [L32] return 0; [L36] COND TRUE __fpclassify_float(x) == 0 [L37] return y; [L66] float res = fmin_float(x, y); [L69] EXPR res == -0.0f && __signbit_float(res) == 1 [L69] COND TRUE !(res == -0.0f && __signbit_float(res) == 1) [L70] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 32 locations, 1 error locations. Result: UNSAFE, OverallTime: 0.6s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 135 SDtfs, 32 SDslu, 140 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=32occurred 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, 28 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s 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 0.1.24-30f4e4a [2019-11-27 23:51:13,823 INFO L177 SettingsManager]: Resetting all preferences to default values... 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[2019-11-27 23:51:13,907 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-27 23:51:13,908 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-27 23:51:13,909 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-27 23:51:13,911 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-27 23:51:13,912 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-27 23:51:13,912 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-27 23:51:13,913 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-27 23:51:13,913 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-27 23:51:13,914 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-27 23:51:13,915 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-27 23:51:13,916 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-27 23:51:13,917 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2019-11-27 23:51:13,947 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-27 23:51:13,947 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-27 23:51:13,949 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-27 23:51:13,949 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-27 23:51:13,949 INFO L138 SettingsManager]: * Use SBE=true [2019-11-27 23:51:13,950 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-27 23:51:13,950 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-27 23:51:13,950 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-27 23:51:13,950 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-27 23:51:13,951 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-27 23:51:13,951 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-27 23:51:13,951 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-27 23:51:13,951 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-27 23:51:13,952 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-27 23:51:13,952 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-27 23:51:13,952 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-27 23:51:13,953 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-27 23:51:13,953 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-27 23:51:13,953 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-27 23:51:13,953 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-27 23:51:13,954 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-27 23:51:13,954 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-27 23:51:13,954 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-27 23:51:13,955 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-27 23:51:13,955 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-27 23:51:13,955 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-27 23:51:13,955 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-11-27 23:51:13,956 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-27 23:51:13,956 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-27 23:51:13,956 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-27 23:51:13,956 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 -> 36a0a55241cede481b157c1ab9f348d708a5b166 [2019-11-27 23:51:14,299 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-27 23:51:14,322 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-27 23:51:14,326 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-27 23:51:14,331 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-27 23:51:14,331 INFO L275 PluginConnector]: CDTParser initialized [2019-11-27 23:51:14,333 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/float_req_bl_1232b.c [2019-11-27 23:51:14,413 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/779c8c878/1ebbf1ccfe2546fa9c0abedcb56f9b8d/FLAG741266e4f [2019-11-27 23:51:14,855 INFO L306 CDTParser]: Found 1 translation units. [2019-11-27 23:51:14,855 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/float_req_bl_1232b.c [2019-11-27 23:51:14,863 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/779c8c878/1ebbf1ccfe2546fa9c0abedcb56f9b8d/FLAG741266e4f [2019-11-27 23:51:15,208 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/779c8c878/1ebbf1ccfe2546fa9c0abedcb56f9b8d [2019-11-27 23:51:15,212 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-27 23:51:15,215 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-27 23:51:15,217 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-27 23:51:15,217 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-27 23:51:15,221 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-27 23:51:15,222 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:51:15" (1/1) ... [2019-11-27 23:51:15,225 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 27.11 11:51:15, skipping insertion in model container [2019-11-27 23:51:15,225 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:51:15" (1/1) ... [2019-11-27 23:51:15,235 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-27 23:51:15,258 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-27 23:51:15,497 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-27 23:51:15,504 INFO L203 MainTranslator]: Completed pre-run [2019-11-27 23:51:15,534 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-27 23:51:15,621 INFO L208 MainTranslator]: Completed translation [2019-11-27 23:51:15,621 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:51:15 WrapperNode [2019-11-27 23:51:15,621 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-27 23:51:15,622 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-27 23:51:15,622 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-27 23:51:15,622 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-27 23:51:15,634 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:51:15" (1/1) ... [2019-11-27 23:51:15,644 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:51:15" (1/1) ... [2019-11-27 23:51:15,678 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-27 23:51:15,681 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-27 23:51:15,682 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-27 23:51:15,682 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-27 23:51:15,690 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:51:15" (1/1) ... [2019-11-27 23:51:15,690 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:51:15" (1/1) ... [2019-11-27 23:51:15,694 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:51:15" (1/1) ... [2019-11-27 23:51:15,695 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:51:15" (1/1) ... [2019-11-27 23:51:15,703 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:51:15" (1/1) ... [2019-11-27 23:51:15,710 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:51:15" (1/1) ... [2019-11-27 23:51:15,713 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:51:15" (1/1) ... [2019-11-27 23:51:15,717 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-27 23:51:15,717 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-27 23:51:15,718 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-27 23:51:15,718 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-27 23:51:15,719 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:51:15" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-27 23:51:15,781 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-27 23:51:15,781 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-11-27 23:51:15,781 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-27 23:51:15,782 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-27 23:51:15,782 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2019-11-27 23:51:15,782 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-27 23:51:16,162 INFO L292 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-27 23:51:16,162 INFO L297 CfgBuilder]: Removed 18 assume(true) statements. [2019-11-27 23:51:16,164 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:51:16 BoogieIcfgContainer [2019-11-27 23:51:16,164 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-27 23:51:16,165 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-27 23:51:16,165 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-27 23:51:16,168 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-27 23:51:16,169 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.11 11:51:15" (1/3) ... [2019-11-27 23:51:16,170 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3009e040 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 11:51:16, skipping insertion in model container [2019-11-27 23:51:16,170 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:51:15" (2/3) ... [2019-11-27 23:51:16,170 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3009e040 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 11:51:16, skipping insertion in model container [2019-11-27 23:51:16,171 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:51:16" (3/3) ... [2019-11-27 23:51:16,177 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1232b.c [2019-11-27 23:51:16,198 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-27 23:51:16,206 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-27 23:51:16,216 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-27 23:51:16,238 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-27 23:51:16,238 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-27 23:51:16,238 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-27 23:51:16,238 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-27 23:51:16,239 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-27 23:51:16,239 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-27 23:51:16,239 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-27 23:51:16,239 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-27 23:51:16,253 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2019-11-27 23:51:16,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-27 23:51:16,260 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 23:51:16,262 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-27 23:51:16,262 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-27 23:51:16,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 23:51:16,267 INFO L82 PathProgramCache]: Analyzing trace with hash -958075201, now seen corresponding path program 1 times [2019-11-27 23:51:16,276 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-27 23:51:16,277 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [105494950] [2019-11-27 23:51:16,277 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2019-11-27 23:51:16,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-27 23:51:16,355 INFO L255 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 1 conjunts are in the unsatisfiable core [2019-11-27 23:51:16,360 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-27 23:51:16,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-27 23:51:16,376 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-27 23:51:16,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-27 23:51:16,382 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [105494950] [2019-11-27 23:51:16,382 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-27 23:51:16,383 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-11-27 23:51:16,384 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187356280] [2019-11-27 23:51:16,388 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-27 23:51:16,389 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-27 23:51:16,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-27 23:51:16,404 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-27 23:51:16,406 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 2 states. [2019-11-27 23:51:16,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-27 23:51:16,428 INFO L93 Difference]: Finished difference Result 62 states and 98 transitions. [2019-11-27 23:51:16,428 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-27 23:51:16,429 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-11-27 23:51:16,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-27 23:51:16,440 INFO L225 Difference]: With dead ends: 62 [2019-11-27 23:51:16,440 INFO L226 Difference]: Without dead ends: 29 [2019-11-27 23:51:16,444 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 [2019-11-27 23:51:16,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2019-11-27 23:51:16,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2019-11-27 23:51:16,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2019-11-27 23:51:16,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 40 transitions. [2019-11-27 23:51:16,481 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 40 transitions. Word has length 10 [2019-11-27 23:51:16,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-27 23:51:16,481 INFO L462 AbstractCegarLoop]: Abstraction has 29 states and 40 transitions. [2019-11-27 23:51:16,481 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-27 23:51:16,482 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 40 transitions. [2019-11-27 23:51:16,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-27 23:51:16,482 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 23:51:16,483 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-27 23:51:16,697 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2019-11-27 23:51:16,697 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-27 23:51:16,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 23:51:16,698 INFO L82 PathProgramCache]: Analyzing trace with hash 1001584898, now seen corresponding path program 1 times [2019-11-27 23:51:16,699 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-27 23:51:16,700 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [776410817] [2019-11-27 23:51:16,700 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2019-11-27 23:51:16,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-27 23:51:16,769 INFO L255 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-27 23:51:16,770 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-27 23:51:16,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-27 23:51:16,821 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-27 23:51:16,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-27 23:51:16,854 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [776410817] [2019-11-27 23:51:16,854 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-27 23:51:16,854 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2019-11-27 23:51:16,854 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015676611] [2019-11-27 23:51:16,860 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-27 23:51:16,860 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-27 23:51:16,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-27 23:51:16,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-27 23:51:16,862 INFO L87 Difference]: Start difference. First operand 29 states and 40 transitions. Second operand 6 states. [2019-11-27 23:51:17,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-27 23:51:17,008 INFO L93 Difference]: Finished difference Result 68 states and 85 transitions. [2019-11-27 23:51:17,008 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-27 23:51:17,008 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2019-11-27 23:51:17,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-27 23:51:17,010 INFO L225 Difference]: With dead ends: 68 [2019-11-27 23:51:17,010 INFO L226 Difference]: Without dead ends: 59 [2019-11-27 23:51:17,011 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 [2019-11-27 23:51:17,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2019-11-27 23:51:17,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 31. [2019-11-27 23:51:17,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-11-27 23:51:17,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2019-11-27 23:51:17,019 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 11 [2019-11-27 23:51:17,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-27 23:51:17,020 INFO L462 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2019-11-27 23:51:17,020 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-27 23:51:17,020 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2019-11-27 23:51:17,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-11-27 23:51:17,021 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 23:51:17,021 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-27 23:51:17,243 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2019-11-27 23:51:17,246 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-27 23:51:17,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 23:51:17,247 INFO L82 PathProgramCache]: Analyzing trace with hash 1219247017, now seen corresponding path program 1 times [2019-11-27 23:51:17,249 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-27 23:51:17,251 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1370031605] [2019-11-27 23:51:17,251 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2019-11-27 23:51:17,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-27 23:51:17,318 INFO L255 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 9 conjunts are in the unsatisfiable core [2019-11-27 23:51:17,320 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-27 23:51:17,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-27 23:51:17,347 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-27 23:51:17,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-27 23:51:17,382 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1370031605] [2019-11-27 23:51:17,382 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-27 23:51:17,383 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2019-11-27 23:51:17,383 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515114667] [2019-11-27 23:51:17,383 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-27 23:51:17,384 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-27 23:51:17,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-27 23:51:17,384 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-27 23:51:17,385 INFO L87 Difference]: Start difference. First operand 31 states and 42 transitions. Second operand 4 states. [2019-11-27 23:51:17,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-27 23:51:17,467 INFO L93 Difference]: Finished difference Result 52 states and 69 transitions. [2019-11-27 23:51:17,471 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-27 23:51:17,471 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2019-11-27 23:51:17,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-27 23:51:17,472 INFO L225 Difference]: With dead ends: 52 [2019-11-27 23:51:17,472 INFO L226 Difference]: Without dead ends: 26 [2019-11-27 23:51:17,473 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-27 23:51:17,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2019-11-27 23:51:17,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2019-11-27 23:51:17,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2019-11-27 23:51:17,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 32 transitions. [2019-11-27 23:51:17,485 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 32 transitions. Word has length 14 [2019-11-27 23:51:17,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-27 23:51:17,487 INFO L462 AbstractCegarLoop]: Abstraction has 26 states and 32 transitions. [2019-11-27 23:51:17,488 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-27 23:51:17,488 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 32 transitions. [2019-11-27 23:51:17,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-11-27 23:51:17,490 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 23:51:17,490 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-27 23:51:17,704 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2019-11-27 23:51:17,704 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-27 23:51:17,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 23:51:17,705 INFO L82 PathProgramCache]: Analyzing trace with hash 1012446717, now seen corresponding path program 1 times [2019-11-27 23:51:17,706 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-27 23:51:17,707 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [70159299] [2019-11-27 23:51:17,708 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 [2019-11-27 23:51:17,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-27 23:51:17,794 INFO L255 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-27 23:51:17,796 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-27 23:51:17,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-27 23:51:17,818 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-27 23:51:17,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-27 23:51:17,839 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [70159299] [2019-11-27 23:51:17,840 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-27 23:51:17,840 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2019-11-27 23:51:17,840 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122289355] [2019-11-27 23:51:17,841 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-27 23:51:17,841 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-27 23:51:17,841 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-27 23:51:17,842 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-27 23:51:17,842 INFO L87 Difference]: Start difference. First operand 26 states and 32 transitions. Second operand 6 states. [2019-11-27 23:51:17,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-27 23:51:17,951 INFO L93 Difference]: Finished difference Result 61 states and 71 transitions. [2019-11-27 23:51:17,952 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-27 23:51:17,952 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2019-11-27 23:51:17,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-27 23:51:17,953 INFO L225 Difference]: With dead ends: 61 [2019-11-27 23:51:17,953 INFO L226 Difference]: Without dead ends: 52 [2019-11-27 23:51:17,956 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 [2019-11-27 23:51:17,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2019-11-27 23:51:17,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 28. [2019-11-27 23:51:17,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-11-27 23:51:17,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 34 transitions. [2019-11-27 23:51:17,967 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 34 transitions. Word has length 16 [2019-11-27 23:51:17,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-27 23:51:17,967 INFO L462 AbstractCegarLoop]: Abstraction has 28 states and 34 transitions. [2019-11-27 23:51:17,967 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-27 23:51:17,967 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 34 transitions. [2019-11-27 23:51:17,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-11-27 23:51:17,968 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 23:51:17,968 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-27 23:51:18,170 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2019-11-27 23:51:18,171 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-27 23:51:18,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 23:51:18,172 INFO L82 PathProgramCache]: Analyzing trace with hash -414082333, now seen corresponding path program 1 times [2019-11-27 23:51:18,173 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-27 23:51:18,173 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1137716158] [2019-11-27 23:51:18,174 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 [2019-11-27 23:51:18,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-27 23:51:18,245 INFO L255 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-27 23:51:18,246 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-27 23:51:18,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-27 23:51:18,275 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-27 23:51:18,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-27 23:51:18,304 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1137716158] [2019-11-27 23:51:18,304 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-27 23:51:18,304 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2019-11-27 23:51:18,305 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169206354] [2019-11-27 23:51:18,306 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-27 23:51:18,306 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-27 23:51:18,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-27 23:51:18,306 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-27 23:51:18,307 INFO L87 Difference]: Start difference. First operand 28 states and 34 transitions. Second operand 4 states. [2019-11-27 23:51:18,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-27 23:51:18,330 INFO L93 Difference]: Finished difference Result 38 states and 44 transitions. [2019-11-27 23:51:18,333 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-27 23:51:18,333 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2019-11-27 23:51:18,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-27 23:51:18,334 INFO L225 Difference]: With dead ends: 38 [2019-11-27 23:51:18,334 INFO L226 Difference]: Without dead ends: 28 [2019-11-27 23:51:18,335 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 30 SyntacticMatches, 2 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-27 23:51:18,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2019-11-27 23:51:18,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2019-11-27 23:51:18,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-11-27 23:51:18,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 33 transitions. [2019-11-27 23:51:18,341 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 33 transitions. Word has length 18 [2019-11-27 23:51:18,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-27 23:51:18,341 INFO L462 AbstractCegarLoop]: Abstraction has 28 states and 33 transitions. [2019-11-27 23:51:18,341 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-27 23:51:18,341 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 33 transitions. [2019-11-27 23:51:18,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-11-27 23:51:18,342 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 23:51:18,342 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-27 23:51:18,549 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2019-11-27 23:51:18,550 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-27 23:51:18,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 23:51:18,550 INFO L82 PathProgramCache]: Analyzing trace with hash -356824031, now seen corresponding path program 1 times [2019-11-27 23:51:18,550 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-27 23:51:18,551 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [975551857] [2019-11-27 23:51:18,551 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 [2019-11-27 23:51:18,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-27 23:51:18,629 INFO L255 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-27 23:51:18,631 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-27 23:51:18,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-27 23:51:18,670 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-27 23:51:18,672 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-27 23:51:18,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-27 23:51:18,740 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [975551857] [2019-11-27 23:51:18,741 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-27 23:51:18,741 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 9 [2019-11-27 23:51:18,741 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602208285] [2019-11-27 23:51:18,742 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-27 23:51:18,742 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-27 23:51:18,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-27 23:51:18,743 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2019-11-27 23:51:18,743 INFO L87 Difference]: Start difference. First operand 28 states and 33 transitions. Second operand 9 states. [2019-11-27 23:51:18,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-27 23:51:18,883 INFO L93 Difference]: Finished difference Result 40 states and 44 transitions. [2019-11-27 23:51:18,884 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-27 23:51:18,884 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 18 [2019-11-27 23:51:18,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-27 23:51:18,885 INFO L225 Difference]: With dead ends: 40 [2019-11-27 23:51:18,885 INFO L226 Difference]: Without dead ends: 37 [2019-11-27 23:51:18,886 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2019-11-27 23:51:18,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2019-11-27 23:51:18,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 30. [2019-11-27 23:51:18,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2019-11-27 23:51:18,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 35 transitions. [2019-11-27 23:51:18,899 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 35 transitions. Word has length 18 [2019-11-27 23:51:18,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-27 23:51:18,900 INFO L462 AbstractCegarLoop]: Abstraction has 30 states and 35 transitions. [2019-11-27 23:51:18,900 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-27 23:51:18,900 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 35 transitions. [2019-11-27 23:51:18,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-11-27 23:51:18,901 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 23:51:18,902 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-27 23:51:19,113 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2019-11-27 23:51:19,113 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-27 23:51:19,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 23:51:19,114 INFO L82 PathProgramCache]: Analyzing trace with hash -208358251, now seen corresponding path program 1 times [2019-11-27 23:51:19,114 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-27 23:51:19,115 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [436306693] [2019-11-27 23:51:19,115 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 8 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with mathsat -unsat_core_generation=3 [2019-11-27 23:51:19,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-27 23:51:19,194 INFO L255 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 9 conjunts are in the unsatisfiable core [2019-11-27 23:51:19,197 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-27 23:51:19,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-27 23:51:19,238 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-27 23:51:19,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-27 23:51:19,268 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [436306693] [2019-11-27 23:51:19,268 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-27 23:51:19,268 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2019-11-27 23:51:19,269 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651522561] [2019-11-27 23:51:19,269 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-27 23:51:19,269 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-27 23:51:19,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-27 23:51:19,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-27 23:51:19,270 INFO L87 Difference]: Start difference. First operand 30 states and 35 transitions. Second operand 5 states. [2019-11-27 23:51:19,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-27 23:51:19,337 INFO L93 Difference]: Finished difference Result 43 states and 47 transitions. [2019-11-27 23:51:19,337 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-27 23:51:19,338 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2019-11-27 23:51:19,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-27 23:51:19,338 INFO L225 Difference]: With dead ends: 43 [2019-11-27 23:51:19,338 INFO L226 Difference]: Without dead ends: 23 [2019-11-27 23:51:19,339 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 31 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-11-27 23:51:19,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2019-11-27 23:51:19,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2019-11-27 23:51:19,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2019-11-27 23:51:19,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 22 transitions. [2019-11-27 23:51:19,343 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 22 transitions. Word has length 19 [2019-11-27 23:51:19,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-27 23:51:19,344 INFO L462 AbstractCegarLoop]: Abstraction has 23 states and 22 transitions. [2019-11-27 23:51:19,344 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-27 23:51:19,344 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 22 transitions. [2019-11-27 23:51:19,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-11-27 23:51:19,345 INFO L402 BasicCegarLoop]: Found error trace [2019-11-27 23:51:19,345 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-27 23:51:19,559 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 mathsat -unsat_core_generation=3 [2019-11-27 23:51:19,560 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-27 23:51:19,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-27 23:51:19,561 INFO L82 PathProgramCache]: Analyzing trace with hash -1524231306, now seen corresponding path program 1 times [2019-11-27 23:51:19,562 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-27 23:51:19,562 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2102527506] [2019-11-27 23:51:19,563 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 9 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with mathsat -unsat_core_generation=3 [2019-11-27 23:51:19,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-27 23:51:19,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-27 23:51:19,761 INFO L174 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2019-11-27 23:51:19,762 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-27 23:51:19,962 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 mathsat -unsat_core_generation=3 [2019-11-27 23:51:20,015 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.11 11:51:20 BoogieIcfgContainer [2019-11-27 23:51:20,015 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-27 23:51:20,016 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-27 23:51:20,016 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-27 23:51:20,016 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-27 23:51:20,017 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:51:16" (3/4) ... [2019-11-27 23:51:20,019 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-27 23:51:20,083 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-27 23:51:20,083 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-27 23:51:20,086 INFO L168 Benchmark]: Toolchain (without parser) took 4871.57 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 126.9 MB). Free memory was 956.3 MB in the beginning and 899.7 MB in the end (delta: 56.7 MB). Peak memory consumption was 183.5 MB. Max. memory is 11.5 GB. [2019-11-27 23:51:20,088 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-27 23:51:20,089 INFO L168 Benchmark]: CACSL2BoogieTranslator took 404.51 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 126.9 MB). Free memory was 956.3 MB in the beginning and 1.1 GB in the end (delta: -166.7 MB). Peak memory consumption was 20.7 MB. Max. memory is 11.5 GB. [2019-11-27 23:51:20,090 INFO L168 Benchmark]: Boogie Procedure Inliner took 59.12 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. [2019-11-27 23:51:20,091 INFO L168 Benchmark]: Boogie Preprocessor took 35.82 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 11.5 GB. [2019-11-27 23:51:20,092 INFO L168 Benchmark]: RCFGBuilder took 446.39 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: 24.5 MB). Peak memory consumption was 24.5 MB. Max. memory is 11.5 GB. [2019-11-27 23:51:20,092 INFO L168 Benchmark]: TraceAbstraction took 3850.32 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 899.7 MB in the end (delta: 190.5 MB). Peak memory consumption was 190.5 MB. Max. memory is 11.5 GB. [2019-11-27 23:51:20,093 INFO L168 Benchmark]: Witness Printer took 67.74 ms. Allocated memory is still 1.2 GB. Free memory is still 899.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-27 23:51:20,096 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 404.51 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 126.9 MB). Free memory was 956.3 MB in the beginning and 1.1 GB in the end (delta: -166.7 MB). Peak memory consumption was 20.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 59.12 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 35.82 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 446.39 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: 24.5 MB). Peak memory consumption was 24.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 3850.32 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 899.7 MB in the end (delta: 190.5 MB). Peak memory consumption was 190.5 MB. Max. memory is 11.5 GB. * Witness Printer took 67.74 ms. Allocated memory is still 1.2 GB. Free memory is still 899.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 70]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L64] float x = -0.0f; [L65] float y = 0.0f; [L13] __uint32_t w; [L16] ieee_float_shape_type gf_u; [L17] gf_u.value = (x) [L18] EXPR gf_u.word [L18] (w) = gf_u.word [L21] COND TRUE w == 0x00000000 || w == 0x80000000 [L22] return 2; [L36] COND FALSE !(__fpclassify_float(x) == 0) [L13] __uint32_t w; [L16] ieee_float_shape_type gf_u; [L17] gf_u.value = (x) [L18] EXPR gf_u.word [L18] (w) = gf_u.word [L21] COND TRUE w == 0x00000000 || w == 0x80000000 [L22] return 2; [L38] COND FALSE !(__fpclassify_float(y) == 0) [L41] EXPR x < y ? x : y [L41] return x < y ? x : y; [L66] float res = fmin_float(x, y); [L69] EXPR res == -0.0f && __signbit_float(res) == 1 [L45] __uint32_t w; [L48] ieee_float_shape_type gf_u; [L49] gf_u.value = (x) [L50] EXPR gf_u.word [L50] (w) = gf_u.word [L53] return (w & 0x80000000) != 0; [L69] EXPR res == -0.0f && __signbit_float(res) == 1 [L69] COND TRUE !(res == -0.0f && __signbit_float(res) == 1) [L70] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 32 locations, 1 error locations. Result: UNSAFE, OverallTime: 3.7s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 222 SDtfs, 191 SDslu, 324 SDs, 0 SdLazy, 100 SolverSat, 16 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 209 GetRequests, 169 SyntacticMatches, 7 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred 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, 7 MinimizatonAttempts, 59 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 128 NumberOfCodeBlocks, 128 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 198 ConstructedInterpolants, 0 QuantifiedInterpolants, 7783 SizeOfPredicates, 27 NumberOfNonLiveVariables, 328 ConjunctsInSsa, 40 ConjunctsInUnsatCore, 14 InterpolantComputations, 14 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...