/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/Ultimate.py --spec ../../../trunk/examples/svcomp/ReachSafety.prp --file ../../../trunk/examples/svcomp/float-newlib/double_req_bl_1250_true-unreach-call.c --full-output --architecture 32bit --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5eb3fea6 Calling Ultimate with: 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 ../../../trunk/examples/svcomp/float-newlib/double_req_bl_1250_true-unreach-call.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 8159dcd6ea2bf26836c04d37f0678d0278270cd7 --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false .......................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: 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 ../../../trunk/examples/svcomp/float-newlib/double_req_bl_1250_true-unreach-call.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 8159dcd6ea2bf26836c04d37f0678d0278270cd7 --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-5eb3fea [2018-09-21 18:12:48,740 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-21 18:12:48,742 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-21 18:12:48,762 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-21 18:12:48,763 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-21 18:12:48,765 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-21 18:12:48,766 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-21 18:12:48,769 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-21 18:12:48,773 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-21 18:12:48,776 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-21 18:12:48,780 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-21 18:12:48,780 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-21 18:12:48,781 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-21 18:12:48,782 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-21 18:12:48,783 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-21 18:12:48,786 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-21 18:12:48,787 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-21 18:12:48,791 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-21 18:12:48,801 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-21 18:12:48,803 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-21 18:12:48,804 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-21 18:12:48,806 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-21 18:12:48,808 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-21 18:12:48,808 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-21 18:12:48,809 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-21 18:12:48,810 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-21 18:12:48,814 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-21 18:12:48,815 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-21 18:12:48,816 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-21 18:12:48,820 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-21 18:12:48,821 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-21 18:12:48,822 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-21 18:12:48,822 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-21 18:12:48,822 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-21 18:12:48,823 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-21 18:12:48,828 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-21 18:12:48,829 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-09-21 18:12:48,860 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-21 18:12:48,861 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-21 18:12:48,862 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-21 18:12:48,863 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-09-21 18:12:48,863 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-09-21 18:12:48,864 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-09-21 18:12:48,865 INFO L133 SettingsManager]: * Use SBE=true [2018-09-21 18:12:48,865 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-21 18:12:48,865 INFO L133 SettingsManager]: * sizeof long=4 [2018-09-21 18:12:48,865 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-21 18:12:48,866 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-09-21 18:12:48,866 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-21 18:12:48,866 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-21 18:12:48,866 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-21 18:12:48,866 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-21 18:12:48,866 INFO L133 SettingsManager]: * sizeof long double=12 [2018-09-21 18:12:48,867 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-21 18:12:48,867 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-21 18:12:48,867 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-21 18:12:48,867 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-21 18:12:48,867 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-21 18:12:48,868 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-21 18:12:48,868 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-21 18:12:48,868 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-21 18:12:48,868 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-21 18:12:48,868 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-21 18:12:48,868 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-09-21 18:12:48,869 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-21 18:12:48,869 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-21 18:12:48,869 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true 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 -> 8159dcd6ea2bf26836c04d37f0678d0278270cd7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false [2018-09-21 18:12:48,942 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-21 18:12:48,960 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-21 18:12:48,967 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-21 18:12:48,969 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-21 18:12:48,969 INFO L276 PluginConnector]: CDTParser initialized [2018-09-21 18:12:48,970 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1250_true-unreach-call.c [2018-09-21 18:12:49,334 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8ec750802/203fba222cd04c449ed360df9412aa98/FLAG1b7356951 [2018-09-21 18:12:49,484 INFO L277 CDTParser]: Found 1 translation units. [2018-09-21 18:12:49,485 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1250_true-unreach-call.c [2018-09-21 18:12:49,493 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8ec750802/203fba222cd04c449ed360df9412aa98/FLAG1b7356951 [2018-09-21 18:12:49,511 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8ec750802/203fba222cd04c449ed360df9412aa98 [2018-09-21 18:12:49,519 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-21 18:12:49,522 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-21 18:12:49,524 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-21 18:12:49,524 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-21 18:12:49,536 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-21 18:12:49,537 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 06:12:49" (1/1) ... [2018-09-21 18:12:49,541 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f89614f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:12:49, skipping insertion in model container [2018-09-21 18:12:49,541 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 06:12:49" (1/1) ... [2018-09-21 18:12:49,556 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-21 18:12:49,779 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-21 18:12:49,799 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-21 18:12:49,819 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-21 18:12:49,853 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:12:49 WrapperNode [2018-09-21 18:12:49,853 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-21 18:12:49,854 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-21 18:12:49,854 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-21 18:12:49,854 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-21 18:12:49,870 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:12:49" (1/1) ... [2018-09-21 18:12:49,870 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:12:49" (1/1) ... [2018-09-21 18:12:49,882 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:12:49" (1/1) ... [2018-09-21 18:12:49,882 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:12:49" (1/1) ... [2018-09-21 18:12:49,895 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:12:49" (1/1) ... [2018-09-21 18:12:49,906 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:12:49" (1/1) ... [2018-09-21 18:12:49,915 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:12:49" (1/1) ... [2018-09-21 18:12:49,920 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-21 18:12:49,924 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-21 18:12:49,924 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-21 18:12:49,924 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-21 18:12:49,925 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:12:49" (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 [2018-09-21 18:12:50,001 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-21 18:12:50,001 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-21 18:12:50,001 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2018-09-21 18:12:50,002 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_double [2018-09-21 18:12:50,002 INFO L138 BoogieDeclarations]: Found implementation of procedure fmax_double [2018-09-21 18:12:50,002 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-21 18:12:50,002 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-09-21 18:12:50,002 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2018-09-21 18:12:50,002 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2018-09-21 18:12:50,003 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_double [2018-09-21 18:12:50,003 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-09-21 18:12:50,003 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2018-09-21 18:12:50,003 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-09-21 18:12:50,003 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-09-21 18:12:50,003 INFO L130 BoogieDeclarations]: Found specification of procedure fmax_double [2018-09-21 18:12:50,003 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-21 18:12:50,004 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-21 18:12:50,004 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-21 18:12:50,004 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real [2018-09-21 18:12:50,004 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2018-09-21 18:12:50,004 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2018-09-21 18:12:50,004 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-09-21 18:12:50,581 INFO L373 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-21 18:12:50,582 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 06:12:50 BoogieIcfgContainer [2018-09-21 18:12:50,582 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-21 18:12:50,583 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-21 18:12:50,583 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-21 18:12:50,587 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-21 18:12:50,587 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 06:12:49" (1/3) ... [2018-09-21 18:12:50,588 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ebd300b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 06:12:50, skipping insertion in model container [2018-09-21 18:12:50,588 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:12:49" (2/3) ... [2018-09-21 18:12:50,589 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ebd300b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 06:12:50, skipping insertion in model container [2018-09-21 18:12:50,589 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 06:12:50" (3/3) ... [2018-09-21 18:12:50,591 INFO L112 eAbstractionObserver]: Analyzing ICFG double_req_bl_1250_true-unreach-call.c [2018-09-21 18:12:50,602 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-21 18:12:50,612 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-21 18:12:50,662 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-21 18:12:50,663 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-21 18:12:50,663 INFO L382 AbstractCegarLoop]: Hoare is false [2018-09-21 18:12:50,663 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-21 18:12:50,663 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-21 18:12:50,663 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-21 18:12:50,664 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-21 18:12:50,664 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-21 18:12:50,664 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-21 18:12:50,687 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states. [2018-09-21 18:12:50,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-09-21 18:12:50,700 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:12:50,701 INFO L376 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, 1, 1, 1, 1] [2018-09-21 18:12:50,704 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:12:50,709 INFO L82 PathProgramCache]: Analyzing trace with hash -1478379436, now seen corresponding path program 1 times [2018-09-21 18:12:50,712 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-21 18:12:50,713 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-21 18:12:50,765 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-21 18:12:50,765 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:12:50,765 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-21 18:12:50,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:12:50,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-21 18:12:50,876 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:12:50,877 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-09-21 18:12:50,882 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-09-21 18:12:50,896 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-09-21 18:12:50,897 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-09-21 18:12:50,900 INFO L87 Difference]: Start difference. First operand 52 states. Second operand 2 states. [2018-09-21 18:12:50,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:12:50,925 INFO L93 Difference]: Finished difference Result 52 states and 59 transitions. [2018-09-21 18:12:50,925 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-09-21 18:12:50,926 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 26 [2018-09-21 18:12:50,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:12:50,944 INFO L225 Difference]: With dead ends: 52 [2018-09-21 18:12:50,944 INFO L226 Difference]: Without dead ends: 48 [2018-09-21 18:12:50,948 INFO L606 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 [2018-09-21 18:12:50,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2018-09-21 18:12:50,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2018-09-21 18:12:50,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2018-09-21 18:12:50,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 55 transitions. [2018-09-21 18:12:50,998 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 55 transitions. Word has length 26 [2018-09-21 18:12:50,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:12:50,998 INFO L480 AbstractCegarLoop]: Abstraction has 48 states and 55 transitions. [2018-09-21 18:12:50,998 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-09-21 18:12:50,998 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 55 transitions. [2018-09-21 18:12:51,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2018-09-21 18:12:51,002 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:12:51,002 INFO L376 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-21 18:12:51,003 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:12:51,003 INFO L82 PathProgramCache]: Analyzing trace with hash -1444730554, now seen corresponding path program 1 times [2018-09-21 18:12:51,003 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-21 18:12:51,003 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-21 18:12:51,005 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-21 18:12:51,005 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:12:51,005 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-21 18:12:51,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:12:51,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-21 18:12:51,267 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:12:51,267 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-21 18:12:51,269 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-21 18:12:51,269 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-21 18:12:51,270 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-21 18:12:51,270 INFO L87 Difference]: Start difference. First operand 48 states and 55 transitions. Second operand 4 states. [2018-09-21 18:12:51,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:12:51,437 INFO L93 Difference]: Finished difference Result 52 states and 60 transitions. [2018-09-21 18:12:51,437 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-21 18:12:51,438 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 39 [2018-09-21 18:12:51,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:12:51,441 INFO L225 Difference]: With dead ends: 52 [2018-09-21 18:12:51,441 INFO L226 Difference]: Without dead ends: 52 [2018-09-21 18:12:51,444 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-21 18:12:51,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2018-09-21 18:12:51,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2018-09-21 18:12:51,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2018-09-21 18:12:51,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 60 transitions. [2018-09-21 18:12:51,465 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 60 transitions. Word has length 39 [2018-09-21 18:12:51,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:12:51,465 INFO L480 AbstractCegarLoop]: Abstraction has 52 states and 60 transitions. [2018-09-21 18:12:51,465 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-21 18:12:51,469 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 60 transitions. [2018-09-21 18:12:51,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-09-21 18:12:51,471 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:12:51,473 INFO L376 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-21 18:12:51,473 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:12:51,473 INFO L82 PathProgramCache]: Analyzing trace with hash 1187184737, now seen corresponding path program 1 times [2018-09-21 18:12:51,474 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-21 18:12:51,474 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-21 18:12:51,475 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-21 18:12:51,476 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:12:51,476 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-21 18:12:51,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:12:51,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-21 18:12:51,664 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:12:51,664 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-21 18:12:51,664 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-21 18:12:51,665 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-21 18:12:51,665 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-21 18:12:51,665 INFO L87 Difference]: Start difference. First operand 52 states and 60 transitions. Second operand 4 states. [2018-09-21 18:12:51,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:12:51,785 INFO L93 Difference]: Finished difference Result 56 states and 65 transitions. [2018-09-21 18:12:51,785 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-21 18:12:51,786 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 42 [2018-09-21 18:12:51,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:12:51,787 INFO L225 Difference]: With dead ends: 56 [2018-09-21 18:12:51,788 INFO L226 Difference]: Without dead ends: 56 [2018-09-21 18:12:51,788 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-21 18:12:51,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2018-09-21 18:12:51,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 52. [2018-09-21 18:12:51,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2018-09-21 18:12:51,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 60 transitions. [2018-09-21 18:12:51,796 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 60 transitions. Word has length 42 [2018-09-21 18:12:51,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:12:51,797 INFO L480 AbstractCegarLoop]: Abstraction has 52 states and 60 transitions. [2018-09-21 18:12:51,797 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-21 18:12:51,797 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 60 transitions. [2018-09-21 18:12:51,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-09-21 18:12:51,798 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:12:51,799 INFO L376 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-21 18:12:51,799 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:12:51,799 INFO L82 PathProgramCache]: Analyzing trace with hash -1600230750, now seen corresponding path program 1 times [2018-09-21 18:12:51,799 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-21 18:12:51,799 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-21 18:12:51,801 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-21 18:12:51,801 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:12:51,801 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-21 18:12:51,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-09-21 18:12:51,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-09-21 18:12:51,920 INFO L443 BasicCegarLoop]: Counterexample might be feasible [2018-09-21 18:12:51,956 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.09 06:12:51 BoogieIcfgContainer [2018-09-21 18:12:51,956 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-21 18:12:51,957 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-09-21 18:12:51,957 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-09-21 18:12:51,958 INFO L276 PluginConnector]: Witness Printer initialized [2018-09-21 18:12:51,959 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 06:12:50" (3/4) ... [2018-09-21 18:12:51,964 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-09-21 18:12:51,964 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-09-21 18:12:51,965 INFO L168 Benchmark]: Toolchain (without parser) took 2445.40 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.8 MB). Free memory was 951.9 MB in the beginning and 1.1 GB in the end (delta: -111.6 MB). Peak memory consumption was 25.3 MB. Max. memory is 11.5 GB. [2018-09-21 18:12:51,967 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-09-21 18:12:51,968 INFO L168 Benchmark]: CACSL2BoogieTranslator took 329.88 ms. Allocated memory is still 1.0 GB. Free memory was 951.9 MB in the beginning and 941.1 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-09-21 18:12:51,969 INFO L168 Benchmark]: Boogie Preprocessor took 66.32 ms. Allocated memory is still 1.0 GB. Free memory is still 941.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-09-21 18:12:51,970 INFO L168 Benchmark]: RCFGBuilder took 658.72 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.8 MB). Free memory was 941.1 MB in the beginning and 1.1 GB in the end (delta: -170.5 MB). Peak memory consumption was 27.1 MB. Max. memory is 11.5 GB. [2018-09-21 18:12:51,971 INFO L168 Benchmark]: TraceAbstraction took 1373.34 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: 48.2 MB). Peak memory consumption was 48.2 MB. Max. memory is 11.5 GB. [2018-09-21 18:12:51,972 INFO L168 Benchmark]: Witness Printer took 6.82 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-09-21 18:12:51,976 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 329.88 ms. Allocated memory is still 1.0 GB. Free memory was 951.9 MB in the beginning and 941.1 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 66.32 ms. Allocated memory is still 1.0 GB. Free memory is still 941.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 658.72 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.8 MB). Free memory was 941.1 MB in the beginning and 1.1 GB in the end (delta: -170.5 MB). Peak memory consumption was 27.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1373.34 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: 48.2 MB). Peak memory consumption was 48.2 MB. Max. memory is 11.5 GB. * Witness Printer took 6.82 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 72]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 16, overapproximation of someBinaryArithmeticDOUBLEoperation at line 67. Possible FailurePath: [L67] double x = 0.0 / 0.0; [L68] double y = 0.0 / 0.0; [L69] CALL, EXPR fmax_double(x, y) VAL [\old(x)=4294967300, \old(y)=4294967301] [L55] CALL, EXPR __fpclassify_double(x) VAL [\old(x)=4294967300] [L27] __uint32_t msw, lsw; VAL [\old(x)=4294967300, x=4294967300] [L30] FCALL ieee_double_shape_type ew_u; VAL [\old(x)=4294967300, ew_u={4294967302:0}, x=4294967300] [L31] FCALL ew_u.value = (x) VAL [\old(x)=4294967300, ew_u={4294967302:0}, x=4294967300] [L32] EXPR, FCALL ew_u.parts.msw VAL [\old(x)=4294967300, ew_u={4294967302:0}, ew_u.parts.msw=4293918721, x=4294967300] [L32] (msw) = ew_u.parts.msw VAL [\old(x)=4294967300, ew_u={4294967302:0}, ew_u.parts.msw=4293918721, msw=4293918721, x=4294967300] [L32] FCALL (msw) = ew_u.parts.msw VAL [(msw) = ew_u.parts.msw=4294967298, \old(x)=4294967300, ew_u={4294967302:0}, ew_u.parts.msw=4293918721, msw=4293918721, x=4294967300] [L33] EXPR, FCALL ew_u.parts.lsw VAL [\old(x)=4294967300, ew_u={4294967302:0}, ew_u.parts.lsw=4294967297, msw=4293918721, x=4294967300] [L33] (lsw) = ew_u.parts.lsw VAL [\old(x)=4294967300, ew_u={4294967302:0}, ew_u.parts.lsw=4294967297, lsw=4294967297, msw=4293918721, x=4294967300] [L33] FCALL (lsw) = ew_u.parts.lsw VAL [(lsw) = ew_u.parts.lsw=4294967304, \old(x)=4294967300, ew_u={4294967302:0}, ew_u.parts.lsw=4294967297, lsw=4294967297, msw=4293918721, x=4294967300] [L34] COND FALSE !(0) VAL [\old(x)=4294967300, lsw=4294967297, msw=4293918721, x=4294967300] [L36-L37] COND FALSE !((msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000)) VAL [\old(x)=4294967300, lsw=4294967297, msw=4293918721, x=4294967300] [L39-L40] COND FALSE !((msw >= 0x00100000 && msw <= 0x7fefffff) || (msw >= 0x80100000 && msw <= 0xffefffff)) VAL [\old(x)=4294967300, lsw=4294967297, msw=4293918721, x=4294967300] [L42-L43] COND FALSE !((msw >= 0x00000000 && msw <= 0x000fffff) || (msw >= 0x80000000 && msw <= 0x800fffff)) VAL [\old(x)=4294967300, lsw=4294967297, msw=4293918721, x=4294967300] [L46-L47] COND FALSE !((msw == 0x7ff00000 && lsw == 0x00000000) || (msw == 0xfff00000 && lsw == 0x00000000)) [L50] RET return 0; VAL [\old(x)=4294967300, \result=0, lsw=4294967297, msw=4293918721, x=4294967300] [L55] EXPR __fpclassify_double(x) VAL [\old(x)=4294967300, \old(y)=4294967301, __fpclassify_double(x)=0, x=4294967300, y=4294967301] [L55] COND TRUE __fpclassify_double(x) == 0 [L56] RET return y; VAL [\old(x)=4294967300, \old(y)=4294967301, \result=4294967301, x=4294967300, y=4294967301] [L69] EXPR fmax_double(x, y) VAL [fmax_double(x, y)=4294967301, x=4294967300, y=4294967301] [L69] double res = fmax_double(x, y); [L71] CALL, EXPR isnan_double(res) VAL [\old(x)=4294967301] [L16] RET return x != x; VAL [\old(x)=4294967301, \result=0, x=4294967301] [L71] EXPR isnan_double(res) VAL [isnan_double(res)=0, res=4294967301, x=4294967300, y=4294967301] [L71] COND TRUE !isnan_double(res) [L72] __VERIFIER_error() VAL [res=4294967301, x=4294967300, y=4294967301] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 52 locations, 1 error locations. UNSAFE Result, 1.3s OverallTime, 4 OverallIterations, 1 TraceHistogramMax, 0.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 170 SDtfs, 0 SDslu, 206 SDs, 0 SdLazy, 21 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=52occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 4 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 149 NumberOfCodeBlocks, 149 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 104 ConstructedInterpolants, 0 QuantifiedInterpolants, 4382 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: 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 0.1.23-5eb3fea [2018-09-21 18:12:54,465 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-21 18:12:54,468 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-21 18:12:54,484 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-21 18:12:54,484 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-21 18:12:54,486 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-21 18:12:54,487 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-21 18:12:54,489 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-21 18:12:54,491 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-21 18:12:54,492 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-21 18:12:54,493 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-21 18:12:54,494 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-21 18:12:54,495 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-21 18:12:54,496 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-21 18:12:54,497 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-21 18:12:54,499 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-21 18:12:54,499 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-21 18:12:54,502 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-21 18:12:54,504 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-21 18:12:54,506 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-21 18:12:54,507 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-21 18:12:54,508 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-21 18:12:54,511 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-21 18:12:54,512 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-21 18:12:54,512 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-21 18:12:54,513 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-21 18:12:54,514 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-21 18:12:54,515 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-21 18:12:54,516 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-21 18:12:54,518 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-21 18:12:54,518 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-21 18:12:54,519 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-21 18:12:54,519 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-21 18:12:54,519 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-21 18:12:54,521 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-21 18:12:54,522 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-21 18:12:54,522 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2018-09-21 18:12:54,538 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-21 18:12:54,538 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-21 18:12:54,539 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-21 18:12:54,539 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-09-21 18:12:54,540 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-09-21 18:12:54,541 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-09-21 18:12:54,541 INFO L133 SettingsManager]: * Use SBE=true [2018-09-21 18:12:54,541 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-21 18:12:54,541 INFO L133 SettingsManager]: * sizeof long=4 [2018-09-21 18:12:54,541 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-09-21 18:12:54,541 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-21 18:12:54,542 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-21 18:12:54,542 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-21 18:12:54,542 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-21 18:12:54,542 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-09-21 18:12:54,544 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-09-21 18:12:54,544 INFO L133 SettingsManager]: * sizeof long double=12 [2018-09-21 18:12:54,544 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-21 18:12:54,544 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-21 18:12:54,544 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-21 18:12:54,544 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-21 18:12:54,545 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-21 18:12:54,545 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-21 18:12:54,545 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-21 18:12:54,545 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-21 18:12:54,546 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-21 18:12:54,547 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-21 18:12:54,547 INFO L133 SettingsManager]: * Trace refinement strategy=WOLF [2018-09-21 18:12:54,547 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-21 18:12:54,547 INFO L133 SettingsManager]: * Command for external solver=cvc4nyu --tear-down-incremental --rewrite-divk --print-success --lang smt [2018-09-21 18:12:54,547 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-09-21 18:12:54,548 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true 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 -> 8159dcd6ea2bf26836c04d37f0678d0278270cd7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false [2018-09-21 18:12:54,620 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-21 18:12:54,637 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-21 18:12:54,642 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-21 18:12:54,643 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-21 18:12:54,644 INFO L276 PluginConnector]: CDTParser initialized [2018-09-21 18:12:54,645 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1250_true-unreach-call.c [2018-09-21 18:12:55,001 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cc7504ebc/aa5615206e444581a3993706e1672d0e/FLAG39ff1059c [2018-09-21 18:12:55,141 INFO L277 CDTParser]: Found 1 translation units. [2018-09-21 18:12:55,142 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1250_true-unreach-call.c [2018-09-21 18:12:55,150 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cc7504ebc/aa5615206e444581a3993706e1672d0e/FLAG39ff1059c [2018-09-21 18:12:55,168 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cc7504ebc/aa5615206e444581a3993706e1672d0e [2018-09-21 18:12:55,174 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-21 18:12:55,178 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-21 18:12:55,180 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-21 18:12:55,180 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-21 18:12:55,187 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-21 18:12:55,188 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 06:12:55" (1/1) ... [2018-09-21 18:12:55,192 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26bbf828 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:12:55, skipping insertion in model container [2018-09-21 18:12:55,192 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 06:12:55" (1/1) ... [2018-09-21 18:12:55,206 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-21 18:12:55,508 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-21 18:12:55,533 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-21 18:12:55,558 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-21 18:12:55,598 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:12:55 WrapperNode [2018-09-21 18:12:55,598 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-21 18:12:55,599 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-21 18:12:55,599 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-21 18:12:55,599 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-21 18:12:55,612 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:12:55" (1/1) ... [2018-09-21 18:12:55,612 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:12:55" (1/1) ... [2018-09-21 18:12:55,625 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:12:55" (1/1) ... [2018-09-21 18:12:55,625 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:12:55" (1/1) ... [2018-09-21 18:12:55,633 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:12:55" (1/1) ... [2018-09-21 18:12:55,639 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:12:55" (1/1) ... [2018-09-21 18:12:55,641 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:12:55" (1/1) ... [2018-09-21 18:12:55,645 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-21 18:12:55,646 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-21 18:12:55,646 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-21 18:12:55,646 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-21 18:12:55,647 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:12:55" (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 [2018-09-21 18:12:55,725 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-21 18:12:55,726 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-21 18:12:55,726 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2018-09-21 18:12:55,726 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_double [2018-09-21 18:12:55,726 INFO L138 BoogieDeclarations]: Found implementation of procedure fmax_double [2018-09-21 18:12:55,726 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-21 18:12:55,726 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-09-21 18:12:55,727 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2018-09-21 18:12:55,727 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2018-09-21 18:12:55,727 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_double [2018-09-21 18:12:55,727 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-09-21 18:12:55,727 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2018-09-21 18:12:55,799 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2018-09-21 18:12:55,799 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-09-21 18:12:55,800 INFO L130 BoogieDeclarations]: Found specification of procedure fmax_double [2018-09-21 18:12:55,800 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-21 18:12:55,800 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-21 18:12:55,800 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-21 18:12:55,800 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intFLOATTYPE8 [2018-09-21 18:12:55,800 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2018-09-21 18:12:55,800 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2018-09-21 18:12:55,801 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2018-09-21 18:12:56,111 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-21 18:12:56,148 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-21 18:12:56,181 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-21 18:12:56,344 INFO L373 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-21 18:12:56,345 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 06:12:56 BoogieIcfgContainer [2018-09-21 18:12:56,345 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-21 18:12:56,346 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-21 18:12:56,346 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-21 18:12:56,350 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-21 18:12:56,350 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 06:12:55" (1/3) ... [2018-09-21 18:12:56,351 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f901aaa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 06:12:56, skipping insertion in model container [2018-09-21 18:12:56,352 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:12:55" (2/3) ... [2018-09-21 18:12:56,352 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f901aaa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 06:12:56, skipping insertion in model container [2018-09-21 18:12:56,352 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 06:12:56" (3/3) ... [2018-09-21 18:12:56,354 INFO L112 eAbstractionObserver]: Analyzing ICFG double_req_bl_1250_true-unreach-call.c [2018-09-21 18:12:56,365 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-21 18:12:56,375 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-21 18:12:56,419 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-21 18:12:56,419 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-21 18:12:56,420 INFO L382 AbstractCegarLoop]: Hoare is false [2018-09-21 18:12:56,420 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-21 18:12:56,420 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-21 18:12:56,420 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-21 18:12:56,420 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-21 18:12:56,420 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-21 18:12:56,421 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-21 18:12:56,438 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states. [2018-09-21 18:12:56,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-09-21 18:12:56,451 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:12:56,452 INFO L376 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, 1, 1] [2018-09-21 18:12:56,455 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:12:56,461 INFO L82 PathProgramCache]: Analyzing trace with hash 1641724368, now seen corresponding path program 1 times [2018-09-21 18:12:56,468 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-21 18:12:56,469 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy 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) [2018-09-21 18:12:56,485 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2018-09-21 18:12:56,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:12:56,564 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-21 18:12:56,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-21 18:12:56,585 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-21 18:12:56,602 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:12:56,602 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-09-21 18:12:56,607 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-09-21 18:12:56,620 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-09-21 18:12:56,621 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-09-21 18:12:56,623 INFO L87 Difference]: Start difference. First operand 49 states. Second operand 2 states. [2018-09-21 18:12:56,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:12:56,643 INFO L93 Difference]: Finished difference Result 49 states and 56 transitions. [2018-09-21 18:12:56,644 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-09-21 18:12:56,645 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 24 [2018-09-21 18:12:56,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:12:56,654 INFO L225 Difference]: With dead ends: 49 [2018-09-21 18:12:56,655 INFO L226 Difference]: Without dead ends: 45 [2018-09-21 18:12:56,657 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-09-21 18:12:56,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2018-09-21 18:12:56,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2018-09-21 18:12:56,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2018-09-21 18:12:56,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 52 transitions. [2018-09-21 18:12:56,708 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 52 transitions. Word has length 24 [2018-09-21 18:12:56,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:12:56,708 INFO L480 AbstractCegarLoop]: Abstraction has 45 states and 52 transitions. [2018-09-21 18:12:56,708 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-09-21 18:12:56,709 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 52 transitions. [2018-09-21 18:12:56,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-09-21 18:12:56,712 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:12:56,712 INFO L376 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-21 18:12:56,712 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:12:56,713 INFO L82 PathProgramCache]: Analyzing trace with hash -1482345005, now seen corresponding path program 1 times [2018-09-21 18:12:56,714 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-21 18:12:56,714 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy 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) [2018-09-21 18:12:56,724 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2018-09-21 18:12:56,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:12:56,833 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-21 18:12:56,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-21 18:12:56,899 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-21 18:12:56,913 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:12:56,914 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-21 18:12:56,915 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-21 18:12:56,916 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-21 18:12:56,916 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-21 18:12:56,917 INFO L87 Difference]: Start difference. First operand 45 states and 52 transitions. Second operand 4 states. [2018-09-21 18:12:57,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:12:57,054 INFO L93 Difference]: Finished difference Result 48 states and 56 transitions. [2018-09-21 18:12:57,055 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-21 18:12:57,055 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 37 [2018-09-21 18:12:57,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:12:57,058 INFO L225 Difference]: With dead ends: 48 [2018-09-21 18:12:57,059 INFO L226 Difference]: Without dead ends: 48 [2018-09-21 18:12:57,061 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-21 18:12:57,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2018-09-21 18:12:57,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2018-09-21 18:12:57,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2018-09-21 18:12:57,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 56 transitions. [2018-09-21 18:12:57,074 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 56 transitions. Word has length 37 [2018-09-21 18:12:57,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:12:57,076 INFO L480 AbstractCegarLoop]: Abstraction has 48 states and 56 transitions. [2018-09-21 18:12:57,076 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-21 18:12:57,076 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 56 transitions. [2018-09-21 18:12:57,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-09-21 18:12:57,080 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:12:57,080 INFO L376 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-21 18:12:57,080 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:12:57,085 INFO L82 PathProgramCache]: Analyzing trace with hash -1032785831, now seen corresponding path program 1 times [2018-09-21 18:12:57,086 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-21 18:12:57,086 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy 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 [2018-09-21 18:12:57,093 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:12:57,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:12:57,167 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-21 18:12:57,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-21 18:12:57,204 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-21 18:12:57,219 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:12:57,220 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-21 18:12:57,220 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-21 18:12:57,220 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-21 18:12:57,221 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-21 18:12:57,221 INFO L87 Difference]: Start difference. First operand 48 states and 56 transitions. Second operand 4 states. [2018-09-21 18:12:57,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:12:57,350 INFO L93 Difference]: Finished difference Result 51 states and 60 transitions. [2018-09-21 18:12:57,351 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-21 18:12:57,351 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 38 [2018-09-21 18:12:57,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:12:57,353 INFO L225 Difference]: With dead ends: 51 [2018-09-21 18:12:57,356 INFO L226 Difference]: Without dead ends: 51 [2018-09-21 18:12:57,357 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-21 18:12:57,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2018-09-21 18:12:57,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 48. [2018-09-21 18:12:57,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2018-09-21 18:12:57,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 56 transitions. [2018-09-21 18:12:57,378 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 56 transitions. Word has length 38 [2018-09-21 18:12:57,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:12:57,378 INFO L480 AbstractCegarLoop]: Abstraction has 48 states and 56 transitions. [2018-09-21 18:12:57,379 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-21 18:12:57,379 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 56 transitions. [2018-09-21 18:12:57,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2018-09-21 18:12:57,384 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:12:57,385 INFO L376 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-21 18:12:57,385 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:12:57,385 INFO L82 PathProgramCache]: Analyzing trace with hash -1154965353, now seen corresponding path program 1 times [2018-09-21 18:12:57,387 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-21 18:12:57,388 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy 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 [2018-09-21 18:12:57,400 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:12:57,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:12:57,494 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-21 18:12:57,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-21 18:12:57,526 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-21 18:12:57,538 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:12:57,538 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-21 18:12:57,539 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-21 18:12:57,540 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-21 18:12:57,540 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-21 18:12:57,540 INFO L87 Difference]: Start difference. First operand 48 states and 56 transitions. Second operand 4 states. [2018-09-21 18:12:57,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:12:57,626 INFO L93 Difference]: Finished difference Result 51 states and 60 transitions. [2018-09-21 18:12:57,627 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-21 18:12:57,628 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 39 [2018-09-21 18:12:57,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:12:57,629 INFO L225 Difference]: With dead ends: 51 [2018-09-21 18:12:57,630 INFO L226 Difference]: Without dead ends: 51 [2018-09-21 18:12:57,631 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-21 18:12:57,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2018-09-21 18:12:57,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 48. [2018-09-21 18:12:57,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2018-09-21 18:12:57,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 56 transitions. [2018-09-21 18:12:57,639 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 56 transitions. Word has length 39 [2018-09-21 18:12:57,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:12:57,640 INFO L480 AbstractCegarLoop]: Abstraction has 48 states and 56 transitions. [2018-09-21 18:12:57,640 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-21 18:12:57,640 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 56 transitions. [2018-09-21 18:12:57,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-09-21 18:12:57,642 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:12:57,643 INFO L376 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-21 18:12:57,643 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:12:57,644 INFO L82 PathProgramCache]: Analyzing trace with hash -1821175267, now seen corresponding path program 1 times [2018-09-21 18:12:57,644 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-21 18:12:57,644 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy 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 [2018-09-21 18:12:57,655 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:12:57,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:12:57,725 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-21 18:12:57,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-21 18:12:57,748 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-21 18:12:57,760 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:12:57,760 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-21 18:12:57,762 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-21 18:12:57,762 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-21 18:12:57,762 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-21 18:12:57,762 INFO L87 Difference]: Start difference. First operand 48 states and 56 transitions. Second operand 4 states. [2018-09-21 18:12:57,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:12:57,894 INFO L93 Difference]: Finished difference Result 51 states and 60 transitions. [2018-09-21 18:12:57,895 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-21 18:12:57,896 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 40 [2018-09-21 18:12:57,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:12:57,898 INFO L225 Difference]: With dead ends: 51 [2018-09-21 18:12:57,898 INFO L226 Difference]: Without dead ends: 51 [2018-09-21 18:12:57,899 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-21 18:12:57,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2018-09-21 18:12:57,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 48. [2018-09-21 18:12:57,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2018-09-21 18:12:57,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 56 transitions. [2018-09-21 18:12:57,910 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 56 transitions. Word has length 40 [2018-09-21 18:12:57,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:12:57,910 INFO L480 AbstractCegarLoop]: Abstraction has 48 states and 56 transitions. [2018-09-21 18:12:57,910 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-21 18:12:57,910 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 56 transitions. [2018-09-21 18:12:57,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-09-21 18:12:57,913 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:12:57,913 INFO L376 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-21 18:12:57,913 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:12:57,914 INFO L82 PathProgramCache]: Analyzing trace with hash -2114578274, now seen corresponding path program 1 times [2018-09-21 18:12:57,914 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-21 18:12:57,914 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy 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 [2018-09-21 18:12:57,929 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:12:58,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:12:58,033 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-21 18:12:58,449 WARN L178 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-09-21 18:12:58,663 WARN L178 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 5 [2018-09-21 18:12:58,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-21 18:12:58,670 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-21 18:12:58,685 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:12:58,685 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-09-21 18:12:58,686 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-21 18:12:58,686 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-21 18:12:58,686 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-09-21 18:12:58,688 INFO L87 Difference]: Start difference. First operand 48 states and 56 transitions. Second operand 9 states. [2018-09-21 18:12:59,122 WARN L178 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 6 [2018-09-21 18:12:59,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:12:59,934 INFO L93 Difference]: Finished difference Result 53 states and 61 transitions. [2018-09-21 18:12:59,935 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-09-21 18:12:59,935 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 40 [2018-09-21 18:12:59,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:12:59,936 INFO L225 Difference]: With dead ends: 53 [2018-09-21 18:12:59,937 INFO L226 Difference]: Without dead ends: 48 [2018-09-21 18:12:59,937 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2018-09-21 18:12:59,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2018-09-21 18:12:59,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 45. [2018-09-21 18:12:59,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2018-09-21 18:12:59,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 51 transitions. [2018-09-21 18:12:59,944 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 51 transitions. Word has length 40 [2018-09-21 18:12:59,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:12:59,944 INFO L480 AbstractCegarLoop]: Abstraction has 45 states and 51 transitions. [2018-09-21 18:12:59,944 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-21 18:12:59,945 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 51 transitions. [2018-09-21 18:12:59,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2018-09-21 18:12:59,948 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:12:59,949 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-21 18:12:59,949 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:12:59,949 INFO L82 PathProgramCache]: Analyzing trace with hash 43580215, now seen corresponding path program 1 times [2018-09-21 18:12:59,950 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-21 18:12:59,950 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy 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) [2018-09-21 18:12:59,960 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 8 with mathsat -unsat_core_generation=3 [2018-09-21 18:13:00,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:13:00,068 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-21 18:13:00,137 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2018-09-21 18:13:00,137 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-21 18:13:00,152 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:13:00,152 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-21 18:13:00,153 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-21 18:13:00,153 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-21 18:13:00,153 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-21 18:13:00,153 INFO L87 Difference]: Start difference. First operand 45 states and 51 transitions. Second operand 4 states. [2018-09-21 18:13:00,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:13:00,202 INFO L93 Difference]: Finished difference Result 48 states and 55 transitions. [2018-09-21 18:13:00,202 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-21 18:13:00,203 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 57 [2018-09-21 18:13:00,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:13:00,204 INFO L225 Difference]: With dead ends: 48 [2018-09-21 18:13:00,204 INFO L226 Difference]: Without dead ends: 48 [2018-09-21 18:13:00,204 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-21 18:13:00,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2018-09-21 18:13:00,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2018-09-21 18:13:00,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2018-09-21 18:13:00,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 55 transitions. [2018-09-21 18:13:00,212 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 55 transitions. Word has length 57 [2018-09-21 18:13:00,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:13:00,212 INFO L480 AbstractCegarLoop]: Abstraction has 48 states and 55 transitions. [2018-09-21 18:13:00,212 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-21 18:13:00,212 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 55 transitions. [2018-09-21 18:13:00,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2018-09-21 18:13:00,215 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:13:00,217 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-21 18:13:00,217 INFO L423 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:13:00,218 INFO L82 PathProgramCache]: Analyzing trace with hash -1118590449, now seen corresponding path program 1 times [2018-09-21 18:13:00,218 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-21 18:13:00,218 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy 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 [2018-09-21 18:13:00,222 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:13:00,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:13:00,327 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-21 18:13:00,368 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2018-09-21 18:13:00,368 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-21 18:13:00,379 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:13:00,380 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-21 18:13:00,380 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-21 18:13:00,381 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-21 18:13:00,381 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-21 18:13:00,381 INFO L87 Difference]: Start difference. First operand 48 states and 55 transitions. Second operand 4 states. [2018-09-21 18:13:00,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:13:00,422 INFO L93 Difference]: Finished difference Result 51 states and 59 transitions. [2018-09-21 18:13:00,422 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-21 18:13:00,423 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 58 [2018-09-21 18:13:00,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:13:00,424 INFO L225 Difference]: With dead ends: 51 [2018-09-21 18:13:00,424 INFO L226 Difference]: Without dead ends: 51 [2018-09-21 18:13:00,424 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-21 18:13:00,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2018-09-21 18:13:00,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 48. [2018-09-21 18:13:00,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2018-09-21 18:13:00,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 55 transitions. [2018-09-21 18:13:00,432 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 55 transitions. Word has length 58 [2018-09-21 18:13:00,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:13:00,433 INFO L480 AbstractCegarLoop]: Abstraction has 48 states and 55 transitions. [2018-09-21 18:13:00,433 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-21 18:13:00,433 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 55 transitions. [2018-09-21 18:13:00,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2018-09-21 18:13:00,436 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:13:00,436 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-21 18:13:00,436 INFO L423 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:13:00,437 INFO L82 PathProgramCache]: Analyzing trace with hash -899393934, now seen corresponding path program 1 times [2018-09-21 18:13:00,437 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-21 18:13:00,437 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 10 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with mathsat -unsat_core_generation=3 [2018-09-21 18:13:00,446 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:13:00,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:13:00,543 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-21 18:13:00,745 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-21 18:13:00,745 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-21 18:13:00,758 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:13:00,759 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-09-21 18:13:00,759 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-21 18:13:00,759 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-21 18:13:00,760 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-09-21 18:13:00,760 INFO L87 Difference]: Start difference. First operand 48 states and 55 transitions. Second operand 5 states. [2018-09-21 18:13:01,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:13:01,213 INFO L93 Difference]: Finished difference Result 51 states and 57 transitions. [2018-09-21 18:13:01,214 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-09-21 18:13:01,214 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 59 [2018-09-21 18:13:01,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:13:01,215 INFO L225 Difference]: With dead ends: 51 [2018-09-21 18:13:01,216 INFO L226 Difference]: Without dead ends: 48 [2018-09-21 18:13:01,216 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-09-21 18:13:01,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2018-09-21 18:13:01,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2018-09-21 18:13:01,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2018-09-21 18:13:01,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 54 transitions. [2018-09-21 18:13:01,223 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 54 transitions. Word has length 59 [2018-09-21 18:13:01,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:13:01,224 INFO L480 AbstractCegarLoop]: Abstraction has 48 states and 54 transitions. [2018-09-21 18:13:01,224 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-21 18:13:01,224 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 54 transitions. [2018-09-21 18:13:01,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2018-09-21 18:13:01,227 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:13:01,227 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-21 18:13:01,227 INFO L423 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:13:01,227 INFO L82 PathProgramCache]: Analyzing trace with hash -198329356, now seen corresponding path program 1 times [2018-09-21 18:13:01,228 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-21 18:13:01,228 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 11 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with mathsat -unsat_core_generation=3 [2018-09-21 18:13:01,233 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:13:01,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:13:01,338 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-21 18:13:01,586 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-21 18:13:01,587 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-21 18:13:01,604 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:13:01,604 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2018-09-21 18:13:01,605 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-09-21 18:13:01,605 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-09-21 18:13:01,605 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2018-09-21 18:13:01,605 INFO L87 Difference]: Start difference. First operand 48 states and 54 transitions. Second operand 10 states. [2018-09-21 18:13:02,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:13:02,234 INFO L93 Difference]: Finished difference Result 53 states and 59 transitions. [2018-09-21 18:13:02,235 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-09-21 18:13:02,236 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 59 [2018-09-21 18:13:02,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:13:02,237 INFO L225 Difference]: With dead ends: 53 [2018-09-21 18:13:02,237 INFO L226 Difference]: Without dead ends: 45 [2018-09-21 18:13:02,239 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2018-09-21 18:13:02,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2018-09-21 18:13:02,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2018-09-21 18:13:02,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2018-09-21 18:13:02,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 49 transitions. [2018-09-21 18:13:02,244 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 49 transitions. Word has length 59 [2018-09-21 18:13:02,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:13:02,244 INFO L480 AbstractCegarLoop]: Abstraction has 45 states and 49 transitions. [2018-09-21 18:13:02,244 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-09-21 18:13:02,244 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 49 transitions. [2018-09-21 18:13:02,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2018-09-21 18:13:02,247 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:13:02,248 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-21 18:13:02,248 INFO L423 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:13:02,248 INFO L82 PathProgramCache]: Analyzing trace with hash 335212603, now seen corresponding path program 1 times [2018-09-21 18:13:02,249 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-21 18:13:02,249 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 12 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2018-09-21 18:13:02,260 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 12 with mathsat -unsat_core_generation=3 [2018-09-21 18:13:02,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:13:02,355 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-21 18:13:02,433 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2018-09-21 18:13:02,434 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-21 18:13:02,444 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:13:02,444 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-21 18:13:02,445 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-21 18:13:02,445 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-21 18:13:02,445 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-21 18:13:02,445 INFO L87 Difference]: Start difference. First operand 45 states and 49 transitions. Second operand 4 states. [2018-09-21 18:13:02,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:13:02,507 INFO L93 Difference]: Finished difference Result 48 states and 52 transitions. [2018-09-21 18:13:02,508 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-21 18:13:02,508 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2018-09-21 18:13:02,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:13:02,509 INFO L225 Difference]: With dead ends: 48 [2018-09-21 18:13:02,509 INFO L226 Difference]: Without dead ends: 47 [2018-09-21 18:13:02,510 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-21 18:13:02,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2018-09-21 18:13:02,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 45. [2018-09-21 18:13:02,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2018-09-21 18:13:02,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 49 transitions. [2018-09-21 18:13:02,516 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 49 transitions. Word has length 59 [2018-09-21 18:13:02,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:13:02,516 INFO L480 AbstractCegarLoop]: Abstraction has 45 states and 49 transitions. [2018-09-21 18:13:02,517 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-21 18:13:02,517 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 49 transitions. [2018-09-21 18:13:02,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2018-09-21 18:13:02,519 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:13:02,519 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-21 18:13:02,520 INFO L423 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:13:02,520 INFO L82 PathProgramCache]: Analyzing trace with hash 1279822227, now seen corresponding path program 1 times [2018-09-21 18:13:02,522 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-21 18:13:02,522 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 13 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with mathsat -unsat_core_generation=3 [2018-09-21 18:13:02,526 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:13:02,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:13:02,616 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-21 18:13:02,646 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2018-09-21 18:13:02,646 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-21 18:13:02,657 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:13:02,657 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-21 18:13:02,658 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-21 18:13:02,658 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-21 18:13:02,658 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-21 18:13:02,658 INFO L87 Difference]: Start difference. First operand 45 states and 49 transitions. Second operand 4 states. [2018-09-21 18:13:02,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:13:02,688 INFO L93 Difference]: Finished difference Result 48 states and 52 transitions. [2018-09-21 18:13:02,689 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-21 18:13:02,689 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 60 [2018-09-21 18:13:02,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:13:02,690 INFO L225 Difference]: With dead ends: 48 [2018-09-21 18:13:02,690 INFO L226 Difference]: Without dead ends: 47 [2018-09-21 18:13:02,691 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-21 18:13:02,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2018-09-21 18:13:02,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 45. [2018-09-21 18:13:02,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2018-09-21 18:13:02,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 49 transitions. [2018-09-21 18:13:02,695 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 49 transitions. Word has length 60 [2018-09-21 18:13:02,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:13:02,696 INFO L480 AbstractCegarLoop]: Abstraction has 45 states and 49 transitions. [2018-09-21 18:13:02,696 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-21 18:13:02,696 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 49 transitions. [2018-09-21 18:13:02,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2018-09-21 18:13:02,698 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:13:02,699 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-21 18:13:02,699 INFO L423 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:13:02,699 INFO L82 PathProgramCache]: Analyzing trace with hash 986419220, now seen corresponding path program 1 times [2018-09-21 18:13:02,701 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-21 18:13:02,701 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 14 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with mathsat -unsat_core_generation=3 [2018-09-21 18:13:02,719 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:13:02,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:13:02,820 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-21 18:13:03,043 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-21 18:13:03,044 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-21 18:13:03,054 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:13:03,055 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-09-21 18:13:03,055 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-21 18:13:03,055 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-21 18:13:03,055 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-09-21 18:13:03,056 INFO L87 Difference]: Start difference. First operand 45 states and 49 transitions. Second operand 9 states. [2018-09-21 18:13:05,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:13:05,419 INFO L93 Difference]: Finished difference Result 43 states and 47 transitions. [2018-09-21 18:13:05,419 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-09-21 18:13:05,420 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 60 [2018-09-21 18:13:05,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:13:05,420 INFO L225 Difference]: With dead ends: 43 [2018-09-21 18:13:05,421 INFO L226 Difference]: Without dead ends: 0 [2018-09-21 18:13:05,421 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2018-09-21 18:13:05,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-09-21 18:13:05,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-09-21 18:13:05,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-09-21 18:13:05,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-09-21 18:13:05,422 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 60 [2018-09-21 18:13:05,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:13:05,423 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-09-21 18:13:05,423 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-21 18:13:05,423 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-09-21 18:13:05,434 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-09-21 18:13:05,444 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.09 06:13:05 BoogieIcfgContainer [2018-09-21 18:13:05,444 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-21 18:13:05,444 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-09-21 18:13:05,444 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-09-21 18:13:05,445 INFO L276 PluginConnector]: Witness Printer initialized [2018-09-21 18:13:05,445 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 06:12:56" (3/4) ... [2018-09-21 18:13:05,451 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-09-21 18:13:05,459 INFO L316 RCFGBacktranslator]: Ignoring RootEdge to procedure isnan_double [2018-09-21 18:13:05,460 INFO L316 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-09-21 18:13:05,460 INFO L316 RCFGBacktranslator]: Ignoring RootEdge to procedure __fpclassify_double [2018-09-21 18:13:05,460 INFO L316 RCFGBacktranslator]: Ignoring RootEdge to procedure fmax_double [2018-09-21 18:13:05,460 INFO L316 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-09-21 18:13:05,471 INFO L850 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2018-09-21 18:13:05,471 INFO L850 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2018-09-21 18:13:05,471 INFO L850 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-09-21 18:13:05,529 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2018-09-21 18:13:05,529 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-09-21 18:13:05,530 INFO L168 Benchmark]: Toolchain (without parser) took 10355.02 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 190.3 MB). Free memory was 951.8 MB in the beginning and 1.2 GB in the end (delta: -227.3 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-09-21 18:13:05,532 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-09-21 18:13:05,532 INFO L168 Benchmark]: CACSL2BoogieTranslator took 419.06 ms. Allocated memory is still 1.0 GB. Free memory was 951.8 MB in the beginning and 941.1 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-09-21 18:13:05,533 INFO L168 Benchmark]: Boogie Preprocessor took 46.34 ms. Allocated memory is still 1.0 GB. Free memory was 941.1 MB in the beginning and 935.7 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-09-21 18:13:05,535 INFO L168 Benchmark]: RCFGBuilder took 699.39 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 124.3 MB). Free memory was 935.7 MB in the beginning and 1.1 GB in the end (delta: -154.1 MB). Peak memory consumption was 22.1 MB. Max. memory is 11.5 GB. [2018-09-21 18:13:05,535 INFO L168 Benchmark]: TraceAbstraction took 9097.61 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 66.1 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -93.6 MB). Peak memory consumption was 312.6 MB. Max. memory is 11.5 GB. [2018-09-21 18:13:05,536 INFO L168 Benchmark]: Witness Printer took 84.75 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 11.5 GB. [2018-09-21 18:13:05,542 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 419.06 ms. Allocated memory is still 1.0 GB. Free memory was 951.8 MB in the beginning and 941.1 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 46.34 ms. Allocated memory is still 1.0 GB. Free memory was 941.1 MB in the beginning and 935.7 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 699.39 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 124.3 MB). Free memory was 935.7 MB in the beginning and 1.1 GB in the end (delta: -154.1 MB). Peak memory consumption was 22.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 9097.61 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 66.1 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -93.6 MB). Peak memory consumption was 312.6 MB. Max. memory is 11.5 GB. * Witness Printer took 84.75 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 72]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 49 locations, 1 error locations. SAFE Result, 9.0s OverallTime, 13 OverallIterations, 2 TraceHistogramMax, 5.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 653 SDtfs, 31 SDslu, 1806 SDs, 0 SdLazy, 216 SolverSat, 10 SolverUnsat, 2 SolverUnknown, 0 SolverNotchecked, 4.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 631 GetRequests, 576 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 2.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=49occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 13 MinimizatonAttempts, 19 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 1.8s InterpolantComputationTime, 630 NumberOfCodeBlocks, 630 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 617 ConstructedInterpolants, 3 QuantifiedInterpolants, 47059 SizeOfPredicates, 15 NumberOfNonLiveVariables, 1357 ConjunctsInSsa, 63 ConjunctsInUnsatCore, 13 InterpolantComputations, 13 PerfectInterpolantSequences, 126/126 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...