/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/Ultimate.py --spec ../../../trunk/examples/svcomp/ReachSafety.prp --file ../../../trunk/examples/svcomp/float-newlib/double_req_bl_1252a_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_1252a_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 bc33ca82d1494e328dda856c81c55426fcc855af --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_1252a_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 bc33ca82d1494e328dda856c81c55426fcc855af --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 18:13:00,639 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-21 18:13:00,641 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-21 18:13:00,653 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-21 18:13:00,654 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-21 18:13:00,655 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-21 18:13:00,656 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-21 18:13:00,658 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-21 18:13:00,660 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-21 18:13:00,661 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-21 18:13:00,662 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-21 18:13:00,662 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-21 18:13:00,663 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-21 18:13:00,664 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-21 18:13:00,665 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-21 18:13:00,666 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-21 18:13:00,667 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-21 18:13:00,669 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-21 18:13:00,671 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-21 18:13:00,673 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-21 18:13:00,674 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-21 18:13:00,675 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-21 18:13:00,678 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-21 18:13:00,678 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-21 18:13:00,678 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-21 18:13:00,679 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-21 18:13:00,680 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-21 18:13:00,681 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-21 18:13:00,683 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-21 18:13:00,684 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-21 18:13:00,684 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-21 18:13:00,685 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-21 18:13:00,685 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-21 18:13:00,685 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-21 18:13:00,691 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-21 18:13:00,693 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-21 18:13:00,693 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-09-21 18:13:00,724 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-21 18:13:00,726 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-21 18:13:00,730 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-21 18:13:00,730 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-09-21 18:13:00,731 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-09-21 18:13:00,731 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-09-21 18:13:00,732 INFO L133 SettingsManager]: * Use SBE=true [2018-09-21 18:13:00,732 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-21 18:13:00,732 INFO L133 SettingsManager]: * sizeof long=4 [2018-09-21 18:13:00,733 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-21 18:13:00,733 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-09-21 18:13:00,733 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-21 18:13:00,733 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-21 18:13:00,733 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-21 18:13:00,733 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-21 18:13:00,734 INFO L133 SettingsManager]: * sizeof long double=12 [2018-09-21 18:13:00,734 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-21 18:13:00,734 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-21 18:13:00,734 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-21 18:13:00,738 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-21 18:13:00,738 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-21 18:13:00,738 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-21 18:13:00,738 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-21 18:13:00,739 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-21 18:13:00,739 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-21 18:13:00,739 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-21 18:13:00,739 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-09-21 18:13:00,739 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-21 18:13:00,740 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-21 18:13:00,741 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 -> bc33ca82d1494e328dda856c81c55426fcc855af 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 18:13:00,799 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-21 18:13:00,816 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-21 18:13:00,822 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-21 18:13:00,824 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-21 18:13:00,825 INFO L276 PluginConnector]: CDTParser initialized [2018-09-21 18:13:00,826 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1252a_true-unreach-call.c [2018-09-21 18:13:01,192 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f0ebd2dd7/5b7366734c6f42e08afbf035b2768c6e/FLAGd8e9b1461 [2018-09-21 18:13:01,355 INFO L277 CDTParser]: Found 1 translation units. [2018-09-21 18:13:01,356 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1252a_true-unreach-call.c [2018-09-21 18:13:01,365 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f0ebd2dd7/5b7366734c6f42e08afbf035b2768c6e/FLAGd8e9b1461 [2018-09-21 18:13:01,387 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f0ebd2dd7/5b7366734c6f42e08afbf035b2768c6e [2018-09-21 18:13:01,391 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-21 18:13:01,397 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-21 18:13:01,398 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-21 18:13:01,398 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-21 18:13:01,405 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-21 18:13:01,406 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 06:13:01" (1/1) ... [2018-09-21 18:13:01,409 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5be2242d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:13:01, skipping insertion in model container [2018-09-21 18:13:01,409 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 06:13:01" (1/1) ... [2018-09-21 18:13:01,421 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-21 18:13:01,658 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-21 18:13:01,685 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-21 18:13:01,706 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-21 18:13:01,741 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:13:01 WrapperNode [2018-09-21 18:13:01,741 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-21 18:13:01,742 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-21 18:13:01,742 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-21 18:13:01,742 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-21 18:13:01,757 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:13:01" (1/1) ... [2018-09-21 18:13:01,758 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:13:01" (1/1) ... [2018-09-21 18:13:01,771 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:13:01" (1/1) ... [2018-09-21 18:13:01,772 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:13:01" (1/1) ... [2018-09-21 18:13:01,792 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:13:01" (1/1) ... [2018-09-21 18:13:01,802 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:13:01" (1/1) ... [2018-09-21 18:13:01,809 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:13:01" (1/1) ... [2018-09-21 18:13:01,812 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-21 18:13:01,816 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-21 18:13:01,816 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-21 18:13:01,816 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-21 18:13:01,817 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:13:01" (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 18:13:02,012 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-21 18:13:02,013 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-21 18:13:02,013 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_double [2018-09-21 18:13:02,013 INFO L138 BoogieDeclarations]: Found implementation of procedure fmax_double [2018-09-21 18:13:02,013 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2018-09-21 18:13:02,013 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-21 18:13:02,014 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-09-21 18:13:02,014 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2018-09-21 18:13:02,014 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_double [2018-09-21 18:13:02,015 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-09-21 18:13:02,015 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2018-09-21 18:13:02,015 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-09-21 18:13:02,015 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-09-21 18:13:02,015 INFO L130 BoogieDeclarations]: Found specification of procedure fmax_double [2018-09-21 18:13:02,015 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2018-09-21 18:13:02,015 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-21 18:13:02,016 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-21 18:13:02,016 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-21 18:13:02,016 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real [2018-09-21 18:13:02,016 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2018-09-21 18:13:02,016 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2018-09-21 18:13:02,020 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-09-21 18:13:02,632 INFO L373 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-21 18:13:02,633 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 06:13:02 BoogieIcfgContainer [2018-09-21 18:13:02,633 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-21 18:13:02,635 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-21 18:13:02,635 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-21 18:13:02,639 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-21 18:13:02,639 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 06:13:01" (1/3) ... [2018-09-21 18:13:02,640 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c35d5e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 06:13:02, skipping insertion in model container [2018-09-21 18:13:02,640 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:13:01" (2/3) ... [2018-09-21 18:13:02,641 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c35d5e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 06:13:02, skipping insertion in model container [2018-09-21 18:13:02,642 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 06:13:02" (3/3) ... [2018-09-21 18:13:02,644 INFO L112 eAbstractionObserver]: Analyzing ICFG double_req_bl_1252a_true-unreach-call.c [2018-09-21 18:13:02,654 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-21 18:13:02,662 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-21 18:13:02,702 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-21 18:13:02,703 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-21 18:13:02,703 INFO L382 AbstractCegarLoop]: Hoare is false [2018-09-21 18:13:02,703 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-21 18:13:02,704 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-21 18:13:02,704 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-21 18:13:02,704 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-21 18:13:02,704 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-21 18:13:02,704 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-21 18:13:02,721 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states. [2018-09-21 18:13:02,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-09-21 18:13:02,733 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:13:02,734 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] [2018-09-21 18:13:02,737 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:13:02,742 INFO L82 PathProgramCache]: Analyzing trace with hash -2005512365, now seen corresponding path program 1 times [2018-09-21 18:13:02,745 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-21 18:13:02,745 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-21 18:13:02,794 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-21 18:13:02,794 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:13:02,794 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-21 18:13:02,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:13:02,886 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 18:13:02,891 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:13:02,891 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-09-21 18:13:02,896 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-09-21 18:13:02,910 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-09-21 18:13:02,911 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-09-21 18:13:02,913 INFO L87 Difference]: Start difference. First operand 64 states. Second operand 2 states. [2018-09-21 18:13:02,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:13:02,946 INFO L93 Difference]: Finished difference Result 64 states and 72 transitions. [2018-09-21 18:13:02,947 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-09-21 18:13:02,948 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 22 [2018-09-21 18:13:02,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:13:02,958 INFO L225 Difference]: With dead ends: 64 [2018-09-21 18:13:02,958 INFO L226 Difference]: Without dead ends: 60 [2018-09-21 18:13:02,961 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 18:13:02,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2018-09-21 18:13:03,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2018-09-21 18:13:03,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2018-09-21 18:13:03,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 68 transitions. [2018-09-21 18:13:03,008 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 68 transitions. Word has length 22 [2018-09-21 18:13:03,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:13:03,008 INFO L480 AbstractCegarLoop]: Abstraction has 60 states and 68 transitions. [2018-09-21 18:13:03,008 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-09-21 18:13:03,009 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 68 transitions. [2018-09-21 18:13:03,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-09-21 18:13:03,011 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:13:03,011 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] [2018-09-21 18:13:03,011 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:13:03,012 INFO L82 PathProgramCache]: Analyzing trace with hash 1797088685, now seen corresponding path program 1 times [2018-09-21 18:13:03,012 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-21 18:13:03,012 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-21 18:13:03,013 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-21 18:13:03,014 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:13:03,014 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-21 18:13:03,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:13:03,310 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 18:13:03,311 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:13:03,311 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-21 18:13:03,312 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-21 18:13:03,313 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-21 18:13:03,313 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-21 18:13:03,313 INFO L87 Difference]: Start difference. First operand 60 states and 68 transitions. Second operand 4 states. [2018-09-21 18:13:03,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:13:03,497 INFO L93 Difference]: Finished difference Result 64 states and 73 transitions. [2018-09-21 18:13:03,498 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-21 18:13:03,498 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 35 [2018-09-21 18:13:03,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:13:03,502 INFO L225 Difference]: With dead ends: 64 [2018-09-21 18:13:03,504 INFO L226 Difference]: Without dead ends: 64 [2018-09-21 18:13:03,506 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 18:13:03,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2018-09-21 18:13:03,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2018-09-21 18:13:03,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2018-09-21 18:13:03,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 73 transitions. [2018-09-21 18:13:03,520 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 73 transitions. Word has length 35 [2018-09-21 18:13:03,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:13:03,520 INFO L480 AbstractCegarLoop]: Abstraction has 64 states and 73 transitions. [2018-09-21 18:13:03,520 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-21 18:13:03,521 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 73 transitions. [2018-09-21 18:13:03,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-09-21 18:13:03,522 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:13:03,522 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 18:13:03,523 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:13:03,523 INFO L82 PathProgramCache]: Analyzing trace with hash -957411872, now seen corresponding path program 1 times [2018-09-21 18:13:03,523 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-21 18:13:03,523 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-21 18:13:03,524 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-21 18:13:03,524 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:13:03,524 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-21 18:13:03,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:13:03,689 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 18:13:03,689 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:13:03,691 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-21 18:13:03,691 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-21 18:13:03,693 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-21 18:13:03,693 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-21 18:13:03,694 INFO L87 Difference]: Start difference. First operand 64 states and 73 transitions. Second operand 4 states. [2018-09-21 18:13:03,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:13:03,767 INFO L93 Difference]: Finished difference Result 68 states and 78 transitions. [2018-09-21 18:13:03,768 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-21 18:13:03,768 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 38 [2018-09-21 18:13:03,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:13:03,770 INFO L225 Difference]: With dead ends: 68 [2018-09-21 18:13:03,770 INFO L226 Difference]: Without dead ends: 68 [2018-09-21 18:13:03,771 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 18:13:03,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2018-09-21 18:13:03,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 64. [2018-09-21 18:13:03,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2018-09-21 18:13:03,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 73 transitions. [2018-09-21 18:13:03,784 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 73 transitions. Word has length 38 [2018-09-21 18:13:03,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:13:03,785 INFO L480 AbstractCegarLoop]: Abstraction has 64 states and 73 transitions. [2018-09-21 18:13:03,785 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-21 18:13:03,785 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 73 transitions. [2018-09-21 18:13:03,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-09-21 18:13:03,786 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:13:03,787 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 18:13:03,787 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:13:03,787 INFO L82 PathProgramCache]: Analyzing trace with hash 1540604065, now seen corresponding path program 1 times [2018-09-21 18:13:03,787 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-21 18:13:03,787 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-21 18:13:03,788 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-21 18:13:03,788 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:13:03,788 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-21 18:13:03,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-09-21 18:13:03,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-09-21 18:13:03,875 INFO L443 BasicCegarLoop]: Counterexample might be feasible [2018-09-21 18:13:03,909 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.09 06:13:03 BoogieIcfgContainer [2018-09-21 18:13:03,910 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-21 18:13:03,910 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-09-21 18:13:03,910 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-09-21 18:13:03,911 INFO L276 PluginConnector]: Witness Printer initialized [2018-09-21 18:13:03,911 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 06:13:02" (3/4) ... [2018-09-21 18:13:03,915 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-09-21 18:13:03,915 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-09-21 18:13:03,916 INFO L168 Benchmark]: Toolchain (without parser) took 2524.18 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 160.4 MB). Free memory was 951.9 MB in the beginning and 1.1 GB in the end (delta: -128.2 MB). Peak memory consumption was 32.2 MB. Max. memory is 11.5 GB. [2018-09-21 18:13:03,918 INFO L168 Benchmark]: CDTParser took 0.26 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 18:13:03,918 INFO L168 Benchmark]: CACSL2BoogieTranslator took 343.82 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 18:13:03,919 INFO L168 Benchmark]: Boogie Preprocessor took 73.26 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 18:13:03,920 INFO L168 Benchmark]: RCFGBuilder took 817.44 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 160.4 MB). Free memory was 941.1 MB in the beginning and 1.1 GB in the end (delta: -181.1 MB). Peak memory consumption was 27.1 MB. Max. memory is 11.5 GB. [2018-09-21 18:13:03,921 INFO L168 Benchmark]: TraceAbstraction took 1274.95 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: 42.2 MB). Peak memory consumption was 42.2 MB. Max. memory is 11.5 GB. [2018-09-21 18:13:03,921 INFO L168 Benchmark]: Witness Printer took 4.77 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 18:13:03,926 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 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 343.82 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 73.26 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 817.44 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 160.4 MB). Free memory was 941.1 MB in the beginning and 1.1 GB in the end (delta: -181.1 MB). Peak memory consumption was 27.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1274.95 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: 42.2 MB). Peak memory consumption was 42.2 MB. Max. memory is 11.5 GB. * Witness Printer took 4.77 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: 85]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 84, overapproximation of someUnaryDOUBLEoperation at line 79. Possible FailurePath: [L79] double x = -0.0; [L80] double y = 0.0; VAL [y=0] [L81] CALL, EXPR fmax_double(x, y) VAL [\old(x)=4294967300, \old(y)=0] [L52] CALL, EXPR __fpclassify_double(x) VAL [\old(x)=4294967300] [L24] __uint32_t msw, lsw; VAL [\old(x)=4294967300, x=4294967300] [L27] FCALL ieee_double_shape_type ew_u; VAL [\old(x)=4294967300, ew_u={4294967301:0}, x=4294967300] [L28] FCALL ew_u.value = (x) VAL [\old(x)=4294967300, ew_u={4294967301:0}, x=4294967300] [L29] EXPR, FCALL ew_u.parts.msw VAL [\old(x)=4294967300, ew_u={4294967301:0}, ew_u.parts.msw=4293918721, x=4294967300] [L29] (msw) = ew_u.parts.msw VAL [\old(x)=4294967300, ew_u={4294967301:0}, ew_u.parts.msw=4293918721, msw=4293918721, x=4294967300] [L29] FCALL (msw) = ew_u.parts.msw VAL [(msw) = ew_u.parts.msw=4294967298, \old(x)=4294967300, ew_u={4294967301:0}, ew_u.parts.msw=4293918721, msw=4293918721, x=4294967300] [L30] EXPR, FCALL ew_u.parts.lsw VAL [\old(x)=4294967300, ew_u={4294967301:0}, ew_u.parts.lsw=4294967297, msw=4293918721, x=4294967300] [L30] (lsw) = ew_u.parts.lsw VAL [\old(x)=4294967300, ew_u={4294967301:0}, ew_u.parts.lsw=4294967297, lsw=4294967297, msw=4293918721, x=4294967300] [L30] FCALL (lsw) = ew_u.parts.lsw VAL [(lsw) = ew_u.parts.lsw=4294967303, \old(x)=4294967300, ew_u={4294967301:0}, ew_u.parts.lsw=4294967297, lsw=4294967297, msw=4293918721, x=4294967300] [L31] COND FALSE !(0) VAL [\old(x)=4294967300, lsw=4294967297, msw=4293918721, x=4294967300] [L33-L34] COND FALSE !((msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000)) VAL [\old(x)=4294967300, lsw=4294967297, msw=4293918721, x=4294967300] [L36-L37] COND FALSE !((msw >= 0x00100000 && msw <= 0x7fefffff) || (msw >= 0x80100000 && msw <= 0xffefffff)) VAL [\old(x)=4294967300, lsw=4294967297, msw=4293918721, x=4294967300] [L39-L40] COND FALSE !((msw >= 0x00000000 && msw <= 0x000fffff) || (msw >= 0x80000000 && msw <= 0x800fffff)) VAL [\old(x)=4294967300, lsw=4294967297, msw=4293918721, x=4294967300] [L43-L44] COND FALSE !((msw == 0x7ff00000 && lsw == 0x00000000) || (msw == 0xfff00000 && lsw == 0x00000000)) [L47] RET return 0; VAL [\old(x)=4294967300, \result=0, lsw=4294967297, msw=4293918721, x=4294967300] [L52] EXPR __fpclassify_double(x) VAL [\old(x)=4294967300, \old(y)=0, __fpclassify_double(x)=0, x=4294967300, y=0] [L52] COND TRUE __fpclassify_double(x) == 0 [L53] RET return y; VAL [\old(x)=4294967300, \old(y)=0, \result=0, x=4294967300, y=0] [L81] EXPR fmax_double(x, y) VAL [fmax_double(x, y)=0, x=4294967300, y=0] [L81] double res = fmax_double(x, y); [L84] EXPR res == 0.0 && __signbit_double(res) == 0 VAL [res=0, res == 0.0 && __signbit_double(res) == 0=0, x=4294967300, y=0] [L84] COND FALSE, EXPR !(res == 0.0 && __signbit_double(res) == 0) VAL [res=0, res == 0.0 && __signbit_double(res) == 0=0, x=4294967300, y=0] [L84] COND TRUE !(res == 0.0 && __signbit_double(res) == 0) [L85] __VERIFIER_error() VAL [res=0, x=4294967300, y=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 64 locations, 1 error locations. UNSAFE Result, 1.2s OverallTime, 4 OverallIterations, 1 TraceHistogramMax, 0.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 209 SDtfs, 0 SDslu, 258 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=64occurred 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, 133 NumberOfCodeBlocks, 133 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 92 ConstructedInterpolants, 0 QuantifiedInterpolants, 3534 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 18:13:06,316 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-21 18:13:06,318 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-21 18:13:06,335 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-21 18:13:06,335 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-21 18:13:06,336 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-21 18:13:06,337 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-21 18:13:06,339 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-21 18:13:06,341 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-21 18:13:06,342 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-21 18:13:06,343 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-21 18:13:06,343 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-21 18:13:06,344 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-21 18:13:06,345 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-21 18:13:06,347 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-21 18:13:06,347 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-21 18:13:06,348 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-21 18:13:06,350 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-21 18:13:06,352 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-21 18:13:06,354 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-21 18:13:06,355 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-21 18:13:06,356 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-21 18:13:06,359 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-21 18:13:06,359 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-21 18:13:06,360 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-21 18:13:06,361 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-21 18:13:06,362 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-21 18:13:06,363 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-21 18:13:06,363 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-21 18:13:06,365 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-21 18:13:06,365 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-21 18:13:06,366 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-21 18:13:06,366 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-21 18:13:06,366 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-21 18:13:06,367 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-21 18:13:06,368 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-21 18:13:06,368 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2018-09-21 18:13:06,386 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-21 18:13:06,386 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-21 18:13:06,387 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-21 18:13:06,387 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-09-21 18:13:06,390 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-09-21 18:13:06,390 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-09-21 18:13:06,391 INFO L133 SettingsManager]: * Use SBE=true [2018-09-21 18:13:06,391 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-21 18:13:06,391 INFO L133 SettingsManager]: * sizeof long=4 [2018-09-21 18:13:06,391 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-09-21 18:13:06,391 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-21 18:13:06,391 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-21 18:13:06,392 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-21 18:13:06,392 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-21 18:13:06,392 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-09-21 18:13:06,392 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-09-21 18:13:06,392 INFO L133 SettingsManager]: * sizeof long double=12 [2018-09-21 18:13:06,392 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-21 18:13:06,393 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-21 18:13:06,393 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-21 18:13:06,393 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-21 18:13:06,393 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-21 18:13:06,393 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-21 18:13:06,393 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-21 18:13:06,394 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-21 18:13:06,394 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-21 18:13:06,394 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-21 18:13:06,394 INFO L133 SettingsManager]: * Trace refinement strategy=WOLF [2018-09-21 18:13:06,394 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-21 18:13:06,394 INFO L133 SettingsManager]: * Command for external solver=cvc4nyu --tear-down-incremental --rewrite-divk --print-success --lang smt [2018-09-21 18:13:06,395 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-09-21 18:13:06,395 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 -> bc33ca82d1494e328dda856c81c55426fcc855af 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 18:13:06,468 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-21 18:13:06,482 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-21 18:13:06,486 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-21 18:13:06,487 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-21 18:13:06,488 INFO L276 PluginConnector]: CDTParser initialized [2018-09-21 18:13:06,489 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1252a_true-unreach-call.c [2018-09-21 18:13:06,863 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/89d4317e8/4df4bcc5638e490db0161f0772835420/FLAG85832eae9 [2018-09-21 18:13:07,038 INFO L277 CDTParser]: Found 1 translation units. [2018-09-21 18:13:07,040 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1252a_true-unreach-call.c [2018-09-21 18:13:07,053 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/89d4317e8/4df4bcc5638e490db0161f0772835420/FLAG85832eae9 [2018-09-21 18:13:07,076 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/89d4317e8/4df4bcc5638e490db0161f0772835420 [2018-09-21 18:13:07,081 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-21 18:13:07,085 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-21 18:13:07,087 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-21 18:13:07,089 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-21 18:13:07,096 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-21 18:13:07,097 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 06:13:07" (1/1) ... [2018-09-21 18:13:07,101 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5be2242d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:13:07, skipping insertion in model container [2018-09-21 18:13:07,101 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 06:13:07" (1/1) ... [2018-09-21 18:13:07,115 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-21 18:13:07,353 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-21 18:13:07,376 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-21 18:13:07,400 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-21 18:13:07,436 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:13:07 WrapperNode [2018-09-21 18:13:07,437 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-21 18:13:07,442 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-21 18:13:07,442 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-21 18:13:07,443 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-21 18:13:07,458 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:13:07" (1/1) ... [2018-09-21 18:13:07,458 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:13:07" (1/1) ... [2018-09-21 18:13:07,470 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:13:07" (1/1) ... [2018-09-21 18:13:07,471 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:13:07" (1/1) ... [2018-09-21 18:13:07,480 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:13:07" (1/1) ... [2018-09-21 18:13:07,486 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:13:07" (1/1) ... [2018-09-21 18:13:07,491 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:13:07" (1/1) ... [2018-09-21 18:13:07,507 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-21 18:13:07,507 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-21 18:13:07,507 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-21 18:13:07,508 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-21 18:13:07,512 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:13:07" (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 18:13:07,655 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-21 18:13:07,655 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-21 18:13:07,655 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_double [2018-09-21 18:13:07,655 INFO L138 BoogieDeclarations]: Found implementation of procedure fmax_double [2018-09-21 18:13:07,656 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2018-09-21 18:13:07,656 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-21 18:13:07,656 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-09-21 18:13:07,656 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2018-09-21 18:13:07,657 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_double [2018-09-21 18:13:07,657 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-09-21 18:13:07,657 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2018-09-21 18:13:07,657 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2018-09-21 18:13:07,657 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-09-21 18:13:07,657 INFO L130 BoogieDeclarations]: Found specification of procedure fmax_double [2018-09-21 18:13:07,657 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2018-09-21 18:13:07,658 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-21 18:13:07,658 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-21 18:13:07,658 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-21 18:13:07,658 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2018-09-21 18:13:07,658 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2018-09-21 18:13:07,660 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intFLOATTYPE8 [2018-09-21 18:13:07,660 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2018-09-21 18:13:07,830 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-21 18:13:07,881 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-21 18:13:08,156 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-21 18:13:08,180 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-21 18:13:08,212 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-21 18:13:08,275 INFO L373 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-21 18:13:08,276 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 06:13:08 BoogieIcfgContainer [2018-09-21 18:13:08,276 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-21 18:13:08,277 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-21 18:13:08,277 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-21 18:13:08,281 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-21 18:13:08,281 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 06:13:07" (1/3) ... [2018-09-21 18:13:08,282 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19bf0857 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 06:13:08, skipping insertion in model container [2018-09-21 18:13:08,282 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:13:07" (2/3) ... [2018-09-21 18:13:08,282 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19bf0857 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 06:13:08, skipping insertion in model container [2018-09-21 18:13:08,282 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 06:13:08" (3/3) ... [2018-09-21 18:13:08,284 INFO L112 eAbstractionObserver]: Analyzing ICFG double_req_bl_1252a_true-unreach-call.c [2018-09-21 18:13:08,295 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-21 18:13:08,304 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-21 18:13:08,350 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-21 18:13:08,350 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-21 18:13:08,351 INFO L382 AbstractCegarLoop]: Hoare is false [2018-09-21 18:13:08,351 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-21 18:13:08,351 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-21 18:13:08,351 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-21 18:13:08,351 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-21 18:13:08,352 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-21 18:13:08,352 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-21 18:13:08,368 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states. [2018-09-21 18:13:08,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-09-21 18:13:08,380 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:13:08,382 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] [2018-09-21 18:13:08,384 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:13:08,390 INFO L82 PathProgramCache]: Analyzing trace with hash -1225609055, now seen corresponding path program 1 times [2018-09-21 18:13:08,394 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-21 18:13:08,395 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 18:13:08,408 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 18:13:08,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:13:08,493 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-21 18:13:08,515 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 18:13:08,516 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-21 18:13:08,533 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:13:08,533 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-09-21 18:13:08,537 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-09-21 18:13:08,552 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-09-21 18:13:08,553 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-09-21 18:13:08,556 INFO L87 Difference]: Start difference. First operand 62 states. Second operand 2 states. [2018-09-21 18:13:08,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:13:08,582 INFO L93 Difference]: Finished difference Result 62 states and 70 transitions. [2018-09-21 18:13:08,582 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-09-21 18:13:08,584 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 21 [2018-09-21 18:13:08,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:13:08,596 INFO L225 Difference]: With dead ends: 62 [2018-09-21 18:13:08,597 INFO L226 Difference]: Without dead ends: 58 [2018-09-21 18:13:08,599 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 20 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 18:13:08,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2018-09-21 18:13:08,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2018-09-21 18:13:08,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2018-09-21 18:13:08,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 66 transitions. [2018-09-21 18:13:08,645 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 66 transitions. Word has length 21 [2018-09-21 18:13:08,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:13:08,646 INFO L480 AbstractCegarLoop]: Abstraction has 58 states and 66 transitions. [2018-09-21 18:13:08,646 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-09-21 18:13:08,646 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 66 transitions. [2018-09-21 18:13:08,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-09-21 18:13:08,649 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:13:08,649 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] [2018-09-21 18:13:08,649 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:13:08,649 INFO L82 PathProgramCache]: Analyzing trace with hash 132746963, now seen corresponding path program 1 times [2018-09-21 18:13:08,650 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-21 18:13:08,650 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) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2018-09-21 18:13:08,658 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:13:08,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:13:08,737 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-21 18:13:08,810 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 18:13:08,811 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-21 18:13:08,825 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:13:08,826 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-21 18:13:08,828 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-21 18:13:08,828 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-21 18:13:08,828 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-21 18:13:08,829 INFO L87 Difference]: Start difference. First operand 58 states and 66 transitions. Second operand 4 states. [2018-09-21 18:13:08,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:13:08,981 INFO L93 Difference]: Finished difference Result 61 states and 70 transitions. [2018-09-21 18:13:08,982 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-21 18:13:08,982 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 34 [2018-09-21 18:13:08,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:13:08,987 INFO L225 Difference]: With dead ends: 61 [2018-09-21 18:13:08,988 INFO L226 Difference]: Without dead ends: 61 [2018-09-21 18:13:08,989 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 31 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 18:13:08,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2018-09-21 18:13:08,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2018-09-21 18:13:08,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2018-09-21 18:13:09,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 70 transitions. [2018-09-21 18:13:09,002 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 70 transitions. Word has length 34 [2018-09-21 18:13:09,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:13:09,003 INFO L480 AbstractCegarLoop]: Abstraction has 61 states and 70 transitions. [2018-09-21 18:13:09,003 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-21 18:13:09,003 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 70 transitions. [2018-09-21 18:13:09,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-09-21 18:13:09,007 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:13:09,007 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] [2018-09-21 18:13:09,008 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:13:09,008 INFO L82 PathProgramCache]: Analyzing trace with hash 201431320, now seen corresponding path program 1 times [2018-09-21 18:13:09,011 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-21 18:13:09,011 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) [2018-09-21 18:13:09,026 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2018-09-21 18:13:09,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:13:09,103 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-21 18:13:09,329 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 11 [2018-09-21 18:13:09,335 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 10 [2018-09-21 18:13:09,336 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-21 18:13:09,350 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:13:09,369 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-09-21 18:13:09,370 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:24, output treesize:20 [2018-09-21 18:13:09,497 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2018-09-21 18:13:09,519 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 4 [2018-09-21 18:13:09,519 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-21 18:13:09,543 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:13:09,621 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-09-21 18:13:09,622 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:29, output treesize:14 [2018-09-21 18:13:10,380 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 18:13:10,380 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-21 18:13:10,393 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:13:10,394 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2018-09-21 18:13:10,394 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-09-21 18:13:10,394 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-09-21 18:13:10,395 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2018-09-21 18:13:10,395 INFO L87 Difference]: Start difference. First operand 61 states and 70 transitions. Second operand 10 states. [2018-09-21 18:13:13,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:13:13,722 INFO L93 Difference]: Finished difference Result 70 states and 85 transitions. [2018-09-21 18:13:13,724 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-09-21 18:13:13,725 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 35 [2018-09-21 18:13:13,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:13:13,727 INFO L225 Difference]: With dead ends: 70 [2018-09-21 18:13:13,727 INFO L226 Difference]: Without dead ends: 63 [2018-09-21 18:13:13,728 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2018-09-21 18:13:13,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2018-09-21 18:13:13,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2018-09-21 18:13:13,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2018-09-21 18:13:13,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 72 transitions. [2018-09-21 18:13:13,739 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 72 transitions. Word has length 35 [2018-09-21 18:13:13,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:13:13,740 INFO L480 AbstractCegarLoop]: Abstraction has 63 states and 72 transitions. [2018-09-21 18:13:13,740 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-09-21 18:13:13,740 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 72 transitions. [2018-09-21 18:13:13,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-09-21 18:13:13,741 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:13:13,742 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] [2018-09-21 18:13:13,742 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:13:13,742 INFO L82 PathProgramCache]: Analyzing trace with hash 1544592367, now seen corresponding path program 1 times [2018-09-21 18:13:13,743 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-21 18:13:13,743 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 18:13:13,749 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:13:13,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:13:13,808 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-21 18:13:13,829 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 18:13:13,829 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-21 18:13:13,847 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:13:13,848 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-21 18:13:13,848 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-21 18:13:13,848 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-21 18:13:13,849 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-21 18:13:13,849 INFO L87 Difference]: Start difference. First operand 63 states and 72 transitions. Second operand 4 states. [2018-09-21 18:13:13,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:13:13,931 INFO L93 Difference]: Finished difference Result 66 states and 76 transitions. [2018-09-21 18:13:13,932 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-21 18:13:13,932 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 36 [2018-09-21 18:13:13,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:13:13,934 INFO L225 Difference]: With dead ends: 66 [2018-09-21 18:13:13,934 INFO L226 Difference]: Without dead ends: 66 [2018-09-21 18:13:13,935 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 33 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 18:13:13,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2018-09-21 18:13:13,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 63. [2018-09-21 18:13:13,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2018-09-21 18:13:13,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 72 transitions. [2018-09-21 18:13:13,946 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 72 transitions. Word has length 36 [2018-09-21 18:13:13,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:13:13,946 INFO L480 AbstractCegarLoop]: Abstraction has 63 states and 72 transitions. [2018-09-21 18:13:13,946 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-21 18:13:13,947 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 72 transitions. [2018-09-21 18:13:13,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-09-21 18:13:13,949 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:13:13,949 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 18:13:13,949 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:13:13,950 INFO L82 PathProgramCache]: Analyzing trace with hash -553142156, now seen corresponding path program 1 times [2018-09-21 18:13:13,950 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-21 18:13:13,950 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 18:13:13,959 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:13:14,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:13:14,027 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-21 18:13:14,083 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 11 [2018-09-21 18:13:14,090 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 10 [2018-09-21 18:13:14,091 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-21 18:13:14,108 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:13:14,123 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-09-21 18:13:14,123 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:24, output treesize:20 [2018-09-21 18:13:14,168 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2018-09-21 18:13:14,174 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 4 [2018-09-21 18:13:14,174 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-21 18:13:14,177 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:13:14,191 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-09-21 18:13:14,191 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:29, output treesize:14 [2018-09-21 18:13:14,496 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 18:13:14,496 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-21 18:13:14,506 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:13:14,507 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2018-09-21 18:13:14,507 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-09-21 18:13:14,508 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-09-21 18:13:14,508 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2018-09-21 18:13:14,508 INFO L87 Difference]: Start difference. First operand 63 states and 72 transitions. Second operand 10 states. [2018-09-21 18:13:15,006 WARN L178 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 29 [2018-09-21 18:13:18,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:13:18,334 INFO L93 Difference]: Finished difference Result 69 states and 82 transitions. [2018-09-21 18:13:18,335 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-09-21 18:13:18,335 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 37 [2018-09-21 18:13:18,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:13:18,337 INFO L225 Difference]: With dead ends: 69 [2018-09-21 18:13:18,337 INFO L226 Difference]: Without dead ends: 62 [2018-09-21 18:13:18,338 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2018-09-21 18:13:18,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2018-09-21 18:13:18,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 60. [2018-09-21 18:13:18,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2018-09-21 18:13:18,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 67 transitions. [2018-09-21 18:13:18,343 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 67 transitions. Word has length 37 [2018-09-21 18:13:18,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:13:18,344 INFO L480 AbstractCegarLoop]: Abstraction has 60 states and 67 transitions. [2018-09-21 18:13:18,344 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-09-21 18:13:18,344 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 67 transitions. [2018-09-21 18:13:18,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2018-09-21 18:13:18,346 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:13:18,346 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] [2018-09-21 18:13:18,346 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:13:18,347 INFO L82 PathProgramCache]: Analyzing trace with hash -1819330129, now seen corresponding path program 1 times [2018-09-21 18:13:18,347 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-21 18:13:18,347 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 18:13:18,355 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:13:18,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:13:18,441 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-21 18:13:18,464 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 18:13:18,464 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-21 18:13:18,478 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:13:18,479 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-21 18:13:18,479 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-21 18:13:18,479 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-21 18:13:18,480 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-21 18:13:18,480 INFO L87 Difference]: Start difference. First operand 60 states and 67 transitions. Second operand 4 states. [2018-09-21 18:13:18,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:13:18,585 INFO L93 Difference]: Finished difference Result 63 states and 71 transitions. [2018-09-21 18:13:18,587 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-21 18:13:18,587 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 54 [2018-09-21 18:13:18,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:13:18,588 INFO L225 Difference]: With dead ends: 63 [2018-09-21 18:13:18,588 INFO L226 Difference]: Without dead ends: 63 [2018-09-21 18:13:18,589 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 51 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 18:13:18,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2018-09-21 18:13:18,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2018-09-21 18:13:18,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2018-09-21 18:13:18,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 71 transitions. [2018-09-21 18:13:18,602 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 71 transitions. Word has length 54 [2018-09-21 18:13:18,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:13:18,602 INFO L480 AbstractCegarLoop]: Abstraction has 63 states and 71 transitions. [2018-09-21 18:13:18,603 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-21 18:13:18,603 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 71 transitions. [2018-09-21 18:13:18,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2018-09-21 18:13:18,608 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:13:18,608 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] [2018-09-21 18:13:18,608 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:13:18,608 INFO L82 PathProgramCache]: Analyzing trace with hash -1654387358, now seen corresponding path program 1 times [2018-09-21 18:13:18,609 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-21 18:13:18,609 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 18:13:18,620 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 18:13:18,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:13:18,727 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-21 18:13:18,814 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 11 [2018-09-21 18:13:18,828 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 10 [2018-09-21 18:13:18,829 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-21 18:13:18,834 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:13:18,850 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-09-21 18:13:18,850 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:24, output treesize:20 [2018-09-21 18:13:18,893 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2018-09-21 18:13:18,898 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 4 [2018-09-21 18:13:18,898 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-21 18:13:18,903 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:13:18,913 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-09-21 18:13:18,914 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:29, output treesize:14 [2018-09-21 18:13:19,368 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-09-21 18:13:19,368 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-21 18:13:19,385 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:13:19,385 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2018-09-21 18:13:19,385 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-09-21 18:13:19,386 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-09-21 18:13:19,386 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2018-09-21 18:13:19,386 INFO L87 Difference]: Start difference. First operand 63 states and 71 transitions. Second operand 10 states. [2018-09-21 18:13:21,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:13:21,803 INFO L93 Difference]: Finished difference Result 70 states and 79 transitions. [2018-09-21 18:13:21,804 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-09-21 18:13:21,804 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 55 [2018-09-21 18:13:21,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:13:21,806 INFO L225 Difference]: With dead ends: 70 [2018-09-21 18:13:21,806 INFO L226 Difference]: Without dead ends: 63 [2018-09-21 18:13:21,807 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2018-09-21 18:13:21,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2018-09-21 18:13:21,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2018-09-21 18:13:21,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2018-09-21 18:13:21,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 70 transitions. [2018-09-21 18:13:21,812 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 70 transitions. Word has length 55 [2018-09-21 18:13:21,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:13:21,813 INFO L480 AbstractCegarLoop]: Abstraction has 63 states and 70 transitions. [2018-09-21 18:13:21,813 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-09-21 18:13:21,813 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 70 transitions. [2018-09-21 18:13:21,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2018-09-21 18:13:21,814 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:13:21,815 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] [2018-09-21 18:13:21,815 INFO L423 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:13:21,815 INFO L82 PathProgramCache]: Analyzing trace with hash -953708108, now seen corresponding path program 1 times [2018-09-21 18:13:21,815 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-21 18:13:21,815 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 18:13:21,826 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:13:21,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:13:21,938 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-21 18:13:22,155 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 18:13:22,155 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-21 18:13:22,166 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:13:22,167 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-09-21 18:13:22,167 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-21 18:13:22,168 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-21 18:13:22,168 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-09-21 18:13:22,168 INFO L87 Difference]: Start difference. First operand 63 states and 70 transitions. Second operand 5 states. [2018-09-21 18:13:22,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:13:22,465 INFO L93 Difference]: Finished difference Result 66 states and 72 transitions. [2018-09-21 18:13:22,466 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-09-21 18:13:22,466 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 56 [2018-09-21 18:13:22,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:13:22,468 INFO L225 Difference]: With dead ends: 66 [2018-09-21 18:13:22,468 INFO L226 Difference]: Without dead ends: 63 [2018-09-21 18:13:22,468 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 51 SyntacticMatches, 1 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 18:13:22,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2018-09-21 18:13:22,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2018-09-21 18:13:22,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2018-09-21 18:13:22,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 69 transitions. [2018-09-21 18:13:22,475 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 69 transitions. Word has length 56 [2018-09-21 18:13:22,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:13:22,475 INFO L480 AbstractCegarLoop]: Abstraction has 63 states and 69 transitions. [2018-09-21 18:13:22,475 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-21 18:13:22,475 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 69 transitions. [2018-09-21 18:13:22,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2018-09-21 18:13:22,477 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:13:22,477 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] [2018-09-21 18:13:22,477 INFO L423 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:13:22,477 INFO L82 PathProgramCache]: Analyzing trace with hash -1763054734, now seen corresponding path program 1 times [2018-09-21 18:13:22,478 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-21 18:13:22,478 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 18:13:22,485 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:13:22,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:13:22,584 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-21 18:13:22,689 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 18:13:22,689 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-21 18:13:22,700 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:13:22,700 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-09-21 18:13:22,700 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-09-21 18:13:22,701 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-09-21 18:13:22,701 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-09-21 18:13:22,701 INFO L87 Difference]: Start difference. First operand 63 states and 69 transitions. Second operand 8 states. [2018-09-21 18:13:23,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:13:23,361 INFO L93 Difference]: Finished difference Result 67 states and 73 transitions. [2018-09-21 18:13:23,362 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-21 18:13:23,362 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 56 [2018-09-21 18:13:23,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:13:23,364 INFO L225 Difference]: With dead ends: 67 [2018-09-21 18:13:23,364 INFO L226 Difference]: Without dead ends: 67 [2018-09-21 18:13:23,364 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2018-09-21 18:13:23,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2018-09-21 18:13:23,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2018-09-21 18:13:23,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2018-09-21 18:13:23,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 73 transitions. [2018-09-21 18:13:23,371 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 73 transitions. Word has length 56 [2018-09-21 18:13:23,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:13:23,371 INFO L480 AbstractCegarLoop]: Abstraction has 67 states and 73 transitions. [2018-09-21 18:13:23,372 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-09-21 18:13:23,372 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 73 transitions. [2018-09-21 18:13:23,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2018-09-21 18:13:23,373 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:13:23,373 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] [2018-09-21 18:13:23,373 INFO L423 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:13:23,374 INFO L82 PathProgramCache]: Analyzing trace with hash -1622182773, now seen corresponding path program 1 times [2018-09-21 18:13:23,374 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-21 18:13:23,374 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 18:13:23,383 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:13:23,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:13:23,466 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-21 18:13:23,601 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 18:13:23,601 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-21 18:13:23,617 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:13:23,617 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-21 18:13:23,617 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-21 18:13:23,618 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-21 18:13:23,618 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-21 18:13:23,618 INFO L87 Difference]: Start difference. First operand 67 states and 73 transitions. Second operand 4 states. [2018-09-21 18:13:23,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:13:23,727 INFO L93 Difference]: Finished difference Result 68 states and 74 transitions. [2018-09-21 18:13:23,728 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-21 18:13:23,728 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 56 [2018-09-21 18:13:23,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:13:23,729 INFO L225 Difference]: With dead ends: 68 [2018-09-21 18:13:23,729 INFO L226 Difference]: Without dead ends: 68 [2018-09-21 18:13:23,730 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 53 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 18:13:23,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2018-09-21 18:13:23,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 65. [2018-09-21 18:13:23,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2018-09-21 18:13:23,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 70 transitions. [2018-09-21 18:13:23,735 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 70 transitions. Word has length 56 [2018-09-21 18:13:23,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:13:23,736 INFO L480 AbstractCegarLoop]: Abstraction has 65 states and 70 transitions. [2018-09-21 18:13:23,736 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-21 18:13:23,736 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 70 transitions. [2018-09-21 18:13:23,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2018-09-21 18:13:23,737 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:13:23,737 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] [2018-09-21 18:13:23,737 INFO L423 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:13:23,738 INFO L82 PathProgramCache]: Analyzing trace with hash -1409894658, now seen corresponding path program 1 times [2018-09-21 18:13:23,738 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-21 18:13:23,738 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) Waiting until toolchain timeout for monitored process 12 with mathsat -unsat_core_generation=3 [2018-09-21 18:13:23,748 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:13:23,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:13:23,859 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-21 18:13:23,948 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 11 [2018-09-21 18:13:23,954 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 10 [2018-09-21 18:13:23,955 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-21 18:13:23,960 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:13:23,975 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-09-21 18:13:23,975 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:24, output treesize:20 [2018-09-21 18:13:24,027 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2018-09-21 18:13:24,043 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 4 [2018-09-21 18:13:24,044 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-21 18:13:24,068 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:13:24,144 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-09-21 18:13:24,145 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:29, output treesize:14 [2018-09-21 18:13:24,523 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-09-21 18:13:24,524 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-21 18:13:24,538 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:13:24,538 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2018-09-21 18:13:24,539 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-09-21 18:13:24,539 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-09-21 18:13:24,539 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2018-09-21 18:13:24,540 INFO L87 Difference]: Start difference. First operand 65 states and 70 transitions. Second operand 10 states. [2018-09-21 18:13:25,495 WARN L178 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-09-21 18:13:26,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:13:26,646 INFO L93 Difference]: Finished difference Result 67 states and 69 transitions. [2018-09-21 18:13:26,648 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-09-21 18:13:26,648 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 57 [2018-09-21 18:13:26,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:13:26,649 INFO L225 Difference]: With dead ends: 67 [2018-09-21 18:13:26,649 INFO L226 Difference]: Without dead ends: 57 [2018-09-21 18:13:26,650 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2018-09-21 18:13:26,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2018-09-21 18:13:26,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2018-09-21 18:13:26,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2018-09-21 18:13:26,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 58 transitions. [2018-09-21 18:13:26,654 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 58 transitions. Word has length 57 [2018-09-21 18:13:26,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:13:26,654 INFO L480 AbstractCegarLoop]: Abstraction has 57 states and 58 transitions. [2018-09-21 18:13:26,655 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-09-21 18:13:26,655 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 58 transitions. [2018-09-21 18:13:26,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2018-09-21 18:13:26,656 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:13:26,657 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-21 18:13:26,657 INFO L423 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:13:26,657 INFO L82 PathProgramCache]: Analyzing trace with hash -245978473, now seen corresponding path program 1 times [2018-09-21 18:13:26,658 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-21 18:13:26,658 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 18:13:26,669 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:13:26,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:13:26,787 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-21 18:13:26,925 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 11 [2018-09-21 18:13:26,932 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 10 [2018-09-21 18:13:26,932 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-21 18:13:26,938 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:13:26,956 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-09-21 18:13:26,956 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:24, output treesize:20 [2018-09-21 18:13:27,021 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2018-09-21 18:13:27,026 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 4 [2018-09-21 18:13:27,026 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-21 18:13:27,028 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:13:27,041 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-09-21 18:13:27,041 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:29, output treesize:14 [2018-09-21 18:13:27,348 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 18:13:27,349 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-21 18:13:27,360 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:13:27,360 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2018-09-21 18:13:27,361 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-09-21 18:13:27,361 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-09-21 18:13:27,361 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2018-09-21 18:13:27,362 INFO L87 Difference]: Start difference. First operand 57 states and 58 transitions. Second operand 15 states. [2018-09-21 18:13:28,521 WARN L178 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2018-09-21 18:13:29,391 WARN L178 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 41 [2018-09-21 18:13:29,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:13:29,484 INFO L93 Difference]: Finished difference Result 55 states and 56 transitions. [2018-09-21 18:13:29,486 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-09-21 18:13:29,486 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 72 [2018-09-21 18:13:29,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:13:29,487 INFO L225 Difference]: With dead ends: 55 [2018-09-21 18:13:29,487 INFO L226 Difference]: Without dead ends: 0 [2018-09-21 18:13:29,488 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=88, Invalid=562, Unknown=0, NotChecked=0, Total=650 [2018-09-21 18:13:29,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-09-21 18:13:29,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-09-21 18:13:29,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-09-21 18:13:29,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-09-21 18:13:29,488 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 72 [2018-09-21 18:13:29,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:13:29,489 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-09-21 18:13:29,489 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-09-21 18:13:29,489 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-09-21 18:13:29,489 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-09-21 18:13:29,494 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.09 06:13:29 BoogieIcfgContainer [2018-09-21 18:13:29,495 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-21 18:13:29,495 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-09-21 18:13:29,495 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-09-21 18:13:29,495 INFO L276 PluginConnector]: Witness Printer initialized [2018-09-21 18:13:29,496 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 06:13:08" (3/4) ... [2018-09-21 18:13:29,500 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-09-21 18:13:29,508 INFO L316 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-09-21 18:13:29,508 INFO L316 RCFGBacktranslator]: Ignoring RootEdge to procedure __fpclassify_double [2018-09-21 18:13:29,508 INFO L316 RCFGBacktranslator]: Ignoring RootEdge to procedure fmax_double [2018-09-21 18:13:29,509 INFO L316 RCFGBacktranslator]: Ignoring RootEdge to procedure __signbit_double [2018-09-21 18:13:29,509 INFO L316 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-09-21 18:13:29,516 INFO L850 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2018-09-21 18:13:29,517 INFO L850 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2018-09-21 18:13:29,517 INFO L850 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-09-21 18:13:29,594 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2018-09-21 18:13:29,598 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-09-21 18:13:29,600 INFO L168 Benchmark]: Toolchain (without parser) took 22517.61 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 214.4 MB). Free memory was 953.2 MB in the beginning and 901.0 MB in the end (delta: 52.2 MB). Peak memory consumption was 266.6 MB. Max. memory is 11.5 GB. [2018-09-21 18:13:29,605 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 18:13:29,606 INFO L168 Benchmark]: CACSL2BoogieTranslator took 354.70 ms. Allocated memory is still 1.0 GB. Free memory was 953.2 MB in the beginning and 942.4 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-09-21 18:13:29,606 INFO L168 Benchmark]: Boogie Preprocessor took 64.54 ms. Allocated memory is still 1.0 GB. Free memory was 942.4 MB in the beginning and 937.1 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-09-21 18:13:29,607 INFO L168 Benchmark]: RCFGBuilder took 768.74 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 159.4 MB). Free memory was 937.1 MB in the beginning and 1.1 GB in the end (delta: -190.8 MB). Peak memory consumption was 22.0 MB. Max. memory is 11.5 GB. [2018-09-21 18:13:29,607 INFO L168 Benchmark]: TraceAbstraction took 21217.60 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 55.1 MB). Free memory was 1.1 GB in the beginning and 901.0 MB in the end (delta: 226.8 MB). Peak memory consumption was 281.9 MB. Max. memory is 11.5 GB. [2018-09-21 18:13:29,608 INFO L168 Benchmark]: Witness Printer took 103.15 ms. Allocated memory is still 1.2 GB. Free memory was 901.0 MB in the beginning and 901.0 MB in the end (delta: 24 B). Peak memory consumption was 24 B. Max. memory is 11.5 GB. [2018-09-21 18:13:29,617 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 354.70 ms. Allocated memory is still 1.0 GB. Free memory was 953.2 MB in the beginning and 942.4 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 64.54 ms. Allocated memory is still 1.0 GB. Free memory was 942.4 MB in the beginning and 937.1 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 768.74 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 159.4 MB). Free memory was 937.1 MB in the beginning and 1.1 GB in the end (delta: -190.8 MB). Peak memory consumption was 22.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 21217.60 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 55.1 MB). Free memory was 1.1 GB in the beginning and 901.0 MB in the end (delta: 226.8 MB). Peak memory consumption was 281.9 MB. Max. memory is 11.5 GB. * Witness Printer took 103.15 ms. Allocated memory is still 1.2 GB. Free memory was 901.0 MB in the beginning and 901.0 MB in the end (delta: 24 B). Peak memory consumption was 24 B. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 85]: 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, 62 locations, 1 error locations. SAFE Result, 21.1s OverallTime, 12 OverallIterations, 2 TraceHistogramMax, 15.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 690 SDtfs, 255 SDslu, 2796 SDs, 0 SdLazy, 1006 SolverSat, 42 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 10.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 605 GetRequests, 498 SyntacticMatches, 1 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 7.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=67occurred in iteration=9, 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, 12 MinimizatonAttempts, 8 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 4.3s InterpolantComputationTime, 569 NumberOfCodeBlocks, 569 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 557 ConstructedInterpolants, 86 QuantifiedInterpolants, 116800 SizeOfPredicates, 49 NumberOfNonLiveVariables, 1232 ConjunctsInSsa, 86 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 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...