/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/Ultimate.py --spec ../../../trunk/examples/svcomp/ReachSafety.prp --file ../../../trunk/examples/svcomp/float-newlib/double_req_bl_1230_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_1230_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 7fc53c5de6b5608e137637bc5fb06d4e391070e8 --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_1230_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 7fc53c5de6b5608e137637bc5fb06d4e391070e8 --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-5eb3fea [2018-09-21 18:12:09,567 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-21 18:12:09,569 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-21 18:12:09,581 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-21 18:12:09,582 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-21 18:12:09,583 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-21 18:12:09,585 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-21 18:12:09,587 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-21 18:12:09,589 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-21 18:12:09,590 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-21 18:12:09,591 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-21 18:12:09,592 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-21 18:12:09,593 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-21 18:12:09,594 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-21 18:12:09,595 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-21 18:12:09,596 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-21 18:12:09,597 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-21 18:12:09,599 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-21 18:12:09,601 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-21 18:12:09,602 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-21 18:12:09,603 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-21 18:12:09,605 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-21 18:12:09,607 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-21 18:12:09,608 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-21 18:12:09,608 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-21 18:12:09,609 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-21 18:12:09,610 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-21 18:12:09,611 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-21 18:12:09,611 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-21 18:12:09,613 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-21 18:12:09,613 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-21 18:12:09,614 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-21 18:12:09,614 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-21 18:12:09,614 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-21 18:12:09,615 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-21 18:12:09,616 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-21 18:12:09,616 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-09-21 18:12:09,638 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-21 18:12:09,638 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-21 18:12:09,639 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-21 18:12:09,639 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-09-21 18:12:09,640 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-09-21 18:12:09,640 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-09-21 18:12:09,640 INFO L133 SettingsManager]: * Use SBE=true [2018-09-21 18:12:09,640 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-21 18:12:09,641 INFO L133 SettingsManager]: * sizeof long=4 [2018-09-21 18:12:09,641 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-21 18:12:09,641 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-09-21 18:12:09,641 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-21 18:12:09,641 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-21 18:12:09,642 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-21 18:12:09,642 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-21 18:12:09,642 INFO L133 SettingsManager]: * sizeof long double=12 [2018-09-21 18:12:09,642 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-21 18:12:09,642 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-21 18:12:09,643 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-21 18:12:09,643 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-21 18:12:09,643 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-21 18:12:09,643 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-21 18:12:09,643 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-21 18:12:09,643 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-21 18:12:09,644 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-21 18:12:09,644 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-21 18:12:09,644 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-09-21 18:12:09,644 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-21 18:12:09,644 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-21 18:12:09,645 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 -> 7fc53c5de6b5608e137637bc5fb06d4e391070e8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false [2018-09-21 18:12:09,696 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-21 18:12:09,709 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-21 18:12:09,713 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-21 18:12:09,715 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-21 18:12:09,716 INFO L276 PluginConnector]: CDTParser initialized [2018-09-21 18:12:09,716 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1230_true-unreach-call.c [2018-09-21 18:12:10,099 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/77f1a1fe8/0c0de16b2b1a4a03b4e832581ba03088/FLAGc8339d0c8 [2018-09-21 18:12:10,313 INFO L277 CDTParser]: Found 1 translation units. [2018-09-21 18:12:10,314 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1230_true-unreach-call.c [2018-09-21 18:12:10,324 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/77f1a1fe8/0c0de16b2b1a4a03b4e832581ba03088/FLAGc8339d0c8 [2018-09-21 18:12:10,355 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/77f1a1fe8/0c0de16b2b1a4a03b4e832581ba03088 [2018-09-21 18:12:10,360 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-21 18:12:10,367 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-21 18:12:10,372 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-21 18:12:10,372 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-21 18:12:10,380 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-21 18:12:10,381 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 06:12:10" (1/1) ... [2018-09-21 18:12:10,385 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28a5f1fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:12:10, skipping insertion in model container [2018-09-21 18:12:10,385 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 06:12:10" (1/1) ... [2018-09-21 18:12:10,402 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-21 18:12:10,648 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-21 18:12:10,667 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-21 18:12:10,695 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-21 18:12:10,742 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:12:10 WrapperNode [2018-09-21 18:12:10,742 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-21 18:12:10,743 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-21 18:12:10,743 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-21 18:12:10,743 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-21 18:12:10,760 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:12:10" (1/1) ... [2018-09-21 18:12:10,760 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:12:10" (1/1) ... [2018-09-21 18:12:10,775 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:12:10" (1/1) ... [2018-09-21 18:12:10,775 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:12:10" (1/1) ... [2018-09-21 18:12:10,791 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:12:10" (1/1) ... [2018-09-21 18:12:10,803 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:12:10" (1/1) ... [2018-09-21 18:12:10,808 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:12:10" (1/1) ... [2018-09-21 18:12:10,811 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-21 18:12:10,815 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-21 18:12:10,815 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-21 18:12:10,815 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-21 18:12:10,817 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:12:10" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-21 18:12:10,885 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-21 18:12:10,886 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-21 18:12:10,886 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2018-09-21 18:12:10,886 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_double [2018-09-21 18:12:10,886 INFO L138 BoogieDeclarations]: Found implementation of procedure fmin_double [2018-09-21 18:12:10,886 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-21 18:12:10,886 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-09-21 18:12:10,886 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2018-09-21 18:12:10,887 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2018-09-21 18:12:10,887 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_double [2018-09-21 18:12:10,887 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-09-21 18:12:10,887 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2018-09-21 18:12:10,887 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-09-21 18:12:10,889 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-09-21 18:12:10,890 INFO L130 BoogieDeclarations]: Found specification of procedure fmin_double [2018-09-21 18:12:10,890 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-21 18:12:10,890 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-21 18:12:10,890 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-21 18:12:10,890 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real [2018-09-21 18:12:10,892 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2018-09-21 18:12:10,892 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2018-09-21 18:12:10,892 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-09-21 18:12:11,658 INFO L373 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-21 18:12:11,659 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 06:12:11 BoogieIcfgContainer [2018-09-21 18:12:11,660 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-21 18:12:11,661 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-21 18:12:11,661 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-21 18:12:11,667 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-21 18:12:11,668 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 06:12:10" (1/3) ... [2018-09-21 18:12:11,669 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c7a3464 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 06:12:11, skipping insertion in model container [2018-09-21 18:12:11,670 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:12:10" (2/3) ... [2018-09-21 18:12:11,670 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c7a3464 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 06:12:11, skipping insertion in model container [2018-09-21 18:12:11,671 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 06:12:11" (3/3) ... [2018-09-21 18:12:11,673 INFO L112 eAbstractionObserver]: Analyzing ICFG double_req_bl_1230_true-unreach-call.c [2018-09-21 18:12:11,684 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-21 18:12:11,697 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-21 18:12:11,746 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-21 18:12:11,746 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-21 18:12:11,747 INFO L382 AbstractCegarLoop]: Hoare is false [2018-09-21 18:12:11,747 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-21 18:12:11,747 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-21 18:12:11,747 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-21 18:12:11,747 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-21 18:12:11,748 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-21 18:12:11,748 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-21 18:12:11,765 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states. [2018-09-21 18:12:11,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-09-21 18:12:11,778 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:12:11,779 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-21 18:12:11,786 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:12:11,791 INFO L82 PathProgramCache]: Analyzing trace with hash 1167146968, now seen corresponding path program 1 times [2018-09-21 18:12:11,794 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-21 18:12:11,795 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-21 18:12:11,841 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-21 18:12:11,842 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:12:11,842 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-21 18:12:11,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:12:11,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-21 18:12:11,944 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:12:11,945 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-09-21 18:12:11,949 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-09-21 18:12:11,965 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-09-21 18:12:11,966 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-09-21 18:12:11,968 INFO L87 Difference]: Start difference. First operand 52 states. Second operand 2 states. [2018-09-21 18:12:11,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:12:11,991 INFO L93 Difference]: Finished difference Result 52 states and 59 transitions. [2018-09-21 18:12:11,991 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-09-21 18:12:11,993 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 26 [2018-09-21 18:12:11,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:12:12,004 INFO L225 Difference]: With dead ends: 52 [2018-09-21 18:12:12,004 INFO L226 Difference]: Without dead ends: 48 [2018-09-21 18:12:12,006 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-09-21 18:12:12,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2018-09-21 18:12:12,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2018-09-21 18:12:12,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2018-09-21 18:12:12,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 55 transitions. [2018-09-21 18:12:12,053 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 55 transitions. Word has length 26 [2018-09-21 18:12:12,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:12:12,053 INFO L480 AbstractCegarLoop]: Abstraction has 48 states and 55 transitions. [2018-09-21 18:12:12,053 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-09-21 18:12:12,054 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 55 transitions. [2018-09-21 18:12:12,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2018-09-21 18:12:12,057 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:12:12,057 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-21 18:12:12,058 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:12:12,058 INFO L82 PathProgramCache]: Analyzing trace with hash 1918812708, now seen corresponding path program 1 times [2018-09-21 18:12:12,058 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-21 18:12:12,058 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-21 18:12:12,060 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-21 18:12:12,060 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:12:12,060 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-21 18:12:12,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:12:12,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-21 18:12:12,317 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:12:12,317 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-21 18:12:12,319 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-21 18:12:12,319 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-21 18:12:12,320 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-21 18:12:12,320 INFO L87 Difference]: Start difference. First operand 48 states and 55 transitions. Second operand 4 states. [2018-09-21 18:12:12,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:12:12,513 INFO L93 Difference]: Finished difference Result 52 states and 60 transitions. [2018-09-21 18:12:12,514 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-21 18:12:12,515 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 39 [2018-09-21 18:12:12,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:12:12,519 INFO L225 Difference]: With dead ends: 52 [2018-09-21 18:12:12,519 INFO L226 Difference]: Without dead ends: 52 [2018-09-21 18:12:12,520 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-21 18:12:12,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2018-09-21 18:12:12,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2018-09-21 18:12:12,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2018-09-21 18:12:12,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 60 transitions. [2018-09-21 18:12:12,533 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 60 transitions. Word has length 39 [2018-09-21 18:12:12,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:12:12,533 INFO L480 AbstractCegarLoop]: Abstraction has 52 states and 60 transitions. [2018-09-21 18:12:12,533 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-21 18:12:12,534 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 60 transitions. [2018-09-21 18:12:12,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-09-21 18:12:12,536 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:12:12,536 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-21 18:12:12,536 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:12:12,537 INFO L82 PathProgramCache]: Analyzing trace with hash 362062309, now seen corresponding path program 1 times [2018-09-21 18:12:12,537 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-21 18:12:12,538 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-21 18:12:12,539 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-21 18:12:12,539 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:12:12,539 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-21 18:12:12,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:12:12,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-21 18:12:12,739 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:12:12,739 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-21 18:12:12,740 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-21 18:12:12,740 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-21 18:12:12,740 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-21 18:12:12,741 INFO L87 Difference]: Start difference. First operand 52 states and 60 transitions. Second operand 4 states. [2018-09-21 18:12:12,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:12:12,900 INFO L93 Difference]: Finished difference Result 56 states and 65 transitions. [2018-09-21 18:12:12,903 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-21 18:12:12,903 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 42 [2018-09-21 18:12:12,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:12:12,905 INFO L225 Difference]: With dead ends: 56 [2018-09-21 18:12:12,906 INFO L226 Difference]: Without dead ends: 56 [2018-09-21 18:12:12,906 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-21 18:12:12,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2018-09-21 18:12:12,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 52. [2018-09-21 18:12:12,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2018-09-21 18:12:12,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 60 transitions. [2018-09-21 18:12:12,915 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 60 transitions. Word has length 42 [2018-09-21 18:12:12,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:12:12,916 INFO L480 AbstractCegarLoop]: Abstraction has 52 states and 60 transitions. [2018-09-21 18:12:12,916 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-21 18:12:12,916 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 60 transitions. [2018-09-21 18:12:12,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-09-21 18:12:12,918 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:12:12,918 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-21 18:12:12,918 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:12:12,919 INFO L82 PathProgramCache]: Analyzing trace with hash 1869614118, now seen corresponding path program 1 times [2018-09-21 18:12:12,920 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-21 18:12:12,920 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-21 18:12:12,921 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-21 18:12:12,922 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:12:12,922 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-21 18:12:12,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-09-21 18:12:12,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-09-21 18:12:13,017 INFO L443 BasicCegarLoop]: Counterexample might be feasible [2018-09-21 18:12:13,062 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.09 06:12:13 BoogieIcfgContainer [2018-09-21 18:12:13,063 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-21 18:12:13,063 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-09-21 18:12:13,063 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-09-21 18:12:13,064 INFO L276 PluginConnector]: Witness Printer initialized [2018-09-21 18:12:13,064 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 06:12:11" (3/4) ... [2018-09-21 18:12:13,069 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-09-21 18:12:13,069 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-09-21 18:12:13,070 INFO L168 Benchmark]: Toolchain (without parser) took 2709.58 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 87.6 MB). Free memory was 953.2 MB in the beginning and 1.0 GB in the end (delta: -59.8 MB). Peak memory consumption was 27.7 MB. Max. memory is 11.5 GB. [2018-09-21 18:12:13,072 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-09-21 18:12:13,073 INFO L168 Benchmark]: CACSL2BoogieTranslator took 370.31 ms. Allocated memory is still 1.0 GB. Free memory was 953.2 MB in the beginning and 942.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-09-21 18:12:13,074 INFO L168 Benchmark]: Boogie Preprocessor took 68.31 ms. Allocated memory is still 1.0 GB. Free memory was 942.5 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 18:12:13,075 INFO L168 Benchmark]: RCFGBuilder took 845.05 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 87.6 MB). Free memory was 937.1 MB in the beginning and 1.1 GB in the end (delta: -124.7 MB). Peak memory consumption was 21.7 MB. Max. memory is 11.5 GB. [2018-09-21 18:12:13,076 INFO L168 Benchmark]: TraceAbstraction took 1401.86 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 48.8 MB). Peak memory consumption was 48.8 MB. Max. memory is 11.5 GB. [2018-09-21 18:12:13,077 INFO L168 Benchmark]: Witness Printer took 5.84 ms. Allocated memory is still 1.1 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-09-21 18:12:13,081 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 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 370.31 ms. Allocated memory is still 1.0 GB. Free memory was 953.2 MB in the beginning and 942.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 68.31 ms. Allocated memory is still 1.0 GB. Free memory was 942.5 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 845.05 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 87.6 MB). Free memory was 937.1 MB in the beginning and 1.1 GB in the end (delta: -124.7 MB). Peak memory consumption was 21.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1401.86 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 48.8 MB). Peak memory consumption was 48.8 MB. Max. memory is 11.5 GB. * Witness Printer took 5.84 ms. Allocated memory is still 1.1 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 66]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 16, overapproximation of someBinaryArithmeticDOUBLEoperation at line 61. Possible FailurePath: [L61] double x = 0.0 / 0.0; [L62] double y = 0.0 / 0.0; [L63] CALL, EXPR fmin_double(x, y) VAL [\old(x)=4294967302, \old(y)=4294967303] [L45] CALL, EXPR __fpclassify_double(x) VAL [\old(x)=4294967302] [L18] __uint32_t msw, lsw; VAL [\old(x)=4294967302, x=4294967302] [L21] FCALL ieee_double_shape_type ew_u; VAL [\old(x)=4294967302, ew_u={4294967300:0}, x=4294967302] [L22] FCALL ew_u.value = (x) VAL [\old(x)=4294967302, ew_u={4294967300:0}, x=4294967302] [L23] EXPR, FCALL ew_u.parts.msw VAL [\old(x)=4294967302, ew_u={4294967300:0}, ew_u.parts.msw=4293918721, x=4294967302] [L23] (msw) = ew_u.parts.msw VAL [\old(x)=4294967302, ew_u={4294967300:0}, ew_u.parts.msw=4293918721, msw=4293918721, x=4294967302] [L23] FCALL (msw) = ew_u.parts.msw VAL [(msw) = ew_u.parts.msw=4294967298, \old(x)=4294967302, ew_u={4294967300:0}, ew_u.parts.msw=4293918721, msw=4293918721, x=4294967302] [L24] EXPR, FCALL ew_u.parts.lsw VAL [\old(x)=4294967302, ew_u={4294967300:0}, ew_u.parts.lsw=4294967297, msw=4293918721, x=4294967302] [L24] (lsw) = ew_u.parts.lsw VAL [\old(x)=4294967302, ew_u={4294967300:0}, ew_u.parts.lsw=4294967297, lsw=4294967297, msw=4293918721, x=4294967302] [L24] FCALL (lsw) = ew_u.parts.lsw VAL [(lsw) = ew_u.parts.lsw=4294967304, \old(x)=4294967302, ew_u={4294967300:0}, ew_u.parts.lsw=4294967297, lsw=4294967297, msw=4293918721, x=4294967302] [L25] COND FALSE !(0) VAL [\old(x)=4294967302, lsw=4294967297, msw=4293918721, x=4294967302] [L27-L28] COND FALSE !((msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000)) VAL [\old(x)=4294967302, lsw=4294967297, msw=4293918721, x=4294967302] [L30-L31] COND FALSE !((msw >= 0x00100000 && msw <= 0x7fefffff) || (msw >= 0x80100000 && msw <= 0xffefffff)) VAL [\old(x)=4294967302, lsw=4294967297, msw=4293918721, x=4294967302] [L33-L34] COND FALSE !((msw >= 0x00000000 && msw <= 0x000fffff) || (msw >= 0x80000000 && msw <= 0x800fffff)) VAL [\old(x)=4294967302, lsw=4294967297, msw=4293918721, x=4294967302] [L37-L38] COND FALSE !((msw == 0x7ff00000 && lsw == 0x00000000) || (msw == 0xfff00000 && lsw == 0x00000000)) [L41] RET return 0; VAL [\old(x)=4294967302, \result=0, lsw=4294967297, msw=4293918721, x=4294967302] [L45] EXPR __fpclassify_double(x) VAL [\old(x)=4294967302, \old(y)=4294967303, __fpclassify_double(x)=0, x=4294967302, y=4294967303] [L45] COND TRUE __fpclassify_double(x) == 0 [L46] RET return y; VAL [\old(x)=4294967302, \old(y)=4294967303, \result=4294967303, x=4294967302, y=4294967303] [L63] EXPR fmin_double(x, y) VAL [fmin_double(x, y)=4294967303, x=4294967302, y=4294967303] [L63] double res = fmin_double(x, y); [L65] CALL, EXPR isnan_double(res) VAL [\old(x)=4294967303] [L16] RET return x != x; VAL [\old(x)=4294967303, \result=0, x=4294967303] [L65] EXPR isnan_double(res) VAL [isnan_double(res)=0, res=4294967303, x=4294967302, y=4294967303] [L65] COND TRUE !isnan_double(res) [L66] __VERIFIER_error() VAL [res=4294967303, x=4294967302, y=4294967303] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 52 locations, 1 error locations. UNSAFE Result, 1.3s OverallTime, 4 OverallIterations, 1 TraceHistogramMax, 0.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 170 SDtfs, 0 SDslu, 206 SDs, 0 SdLazy, 21 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=52occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 4 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 149 NumberOfCodeBlocks, 149 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 104 ConstructedInterpolants, 0 QuantifiedInterpolants, 4382 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.23-5eb3fea [2018-09-21 18:12:15,573 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-21 18:12:15,575 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-21 18:12:15,590 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-21 18:12:15,590 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-21 18:12:15,591 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-21 18:12:15,593 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-21 18:12:15,595 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-21 18:12:15,605 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-21 18:12:15,606 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-21 18:12:15,607 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-21 18:12:15,607 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-21 18:12:15,610 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-21 18:12:15,612 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-21 18:12:15,615 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-21 18:12:15,617 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-21 18:12:15,617 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-21 18:12:15,619 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-21 18:12:15,625 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-21 18:12:15,629 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-21 18:12:15,630 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-21 18:12:15,632 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-21 18:12:15,634 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-21 18:12:15,634 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-21 18:12:15,635 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-21 18:12:15,636 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-21 18:12:15,639 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-21 18:12:15,640 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-21 18:12:15,640 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-21 18:12:15,641 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-21 18:12:15,641 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-21 18:12:15,642 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-21 18:12:15,642 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-21 18:12:15,644 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-21 18:12:15,646 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-21 18:12:15,646 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-21 18:12:15,647 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2018-09-21 18:12:15,673 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-21 18:12:15,673 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-21 18:12:15,675 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-21 18:12:15,675 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-09-21 18:12:15,676 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-09-21 18:12:15,676 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-09-21 18:12:15,676 INFO L133 SettingsManager]: * Use SBE=true [2018-09-21 18:12:15,677 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-21 18:12:15,677 INFO L133 SettingsManager]: * sizeof long=4 [2018-09-21 18:12:15,677 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-09-21 18:12:15,677 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-21 18:12:15,677 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-21 18:12:15,678 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-21 18:12:15,679 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-21 18:12:15,679 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-09-21 18:12:15,679 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-09-21 18:12:15,679 INFO L133 SettingsManager]: * sizeof long double=12 [2018-09-21 18:12:15,680 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-21 18:12:15,680 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-21 18:12:15,680 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-21 18:12:15,681 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-21 18:12:15,681 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-21 18:12:15,681 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-21 18:12:15,681 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-21 18:12:15,681 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-21 18:12:15,682 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-21 18:12:15,682 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-21 18:12:15,682 INFO L133 SettingsManager]: * Trace refinement strategy=WOLF [2018-09-21 18:12:15,683 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-21 18:12:15,683 INFO L133 SettingsManager]: * Command for external solver=cvc4nyu --tear-down-incremental --rewrite-divk --print-success --lang smt [2018-09-21 18:12:15,684 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-09-21 18:12:15,684 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 -> 7fc53c5de6b5608e137637bc5fb06d4e391070e8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false [2018-09-21 18:12:15,741 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-21 18:12:15,770 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-21 18:12:15,774 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-21 18:12:15,775 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-21 18:12:15,776 INFO L276 PluginConnector]: CDTParser initialized [2018-09-21 18:12:15,776 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1230_true-unreach-call.c [2018-09-21 18:12:16,123 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c9980485c/1fdd492bf08949209071f0a820d59336/FLAG7f3527208 [2018-09-21 18:12:16,255 INFO L277 CDTParser]: Found 1 translation units. [2018-09-21 18:12:16,256 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1230_true-unreach-call.c [2018-09-21 18:12:16,263 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c9980485c/1fdd492bf08949209071f0a820d59336/FLAG7f3527208 [2018-09-21 18:12:16,279 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c9980485c/1fdd492bf08949209071f0a820d59336 [2018-09-21 18:12:16,283 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-21 18:12:16,286 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-21 18:12:16,288 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-21 18:12:16,288 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-21 18:12:16,295 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-21 18:12:16,296 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 06:12:16" (1/1) ... [2018-09-21 18:12:16,299 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28bf73b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:12:16, skipping insertion in model container [2018-09-21 18:12:16,299 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 06:12:16" (1/1) ... [2018-09-21 18:12:16,312 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-21 18:12:16,553 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-21 18:12:16,573 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-21 18:12:16,590 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-21 18:12:16,626 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:12:16 WrapperNode [2018-09-21 18:12:16,627 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-21 18:12:16,628 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-21 18:12:16,628 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-21 18:12:16,628 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-21 18:12:16,643 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:12:16" (1/1) ... [2018-09-21 18:12:16,643 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:12:16" (1/1) ... [2018-09-21 18:12:16,658 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:12:16" (1/1) ... [2018-09-21 18:12:16,658 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:12:16" (1/1) ... [2018-09-21 18:12:16,666 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:12:16" (1/1) ... [2018-09-21 18:12:16,671 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:12:16" (1/1) ... [2018-09-21 18:12:16,674 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:12:16" (1/1) ... [2018-09-21 18:12:16,678 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-21 18:12:16,678 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-21 18:12:16,678 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-21 18:12:16,678 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-21 18:12:16,679 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:12:16" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-21 18:12:16,830 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-21 18:12:16,831 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-21 18:12:16,831 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2018-09-21 18:12:16,831 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_double [2018-09-21 18:12:16,831 INFO L138 BoogieDeclarations]: Found implementation of procedure fmin_double [2018-09-21 18:12:16,831 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-21 18:12:16,832 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-09-21 18:12:16,832 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2018-09-21 18:12:16,832 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2018-09-21 18:12:16,832 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_double [2018-09-21 18:12:16,832 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-09-21 18:12:16,832 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2018-09-21 18:12:16,834 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2018-09-21 18:12:16,834 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-09-21 18:12:16,834 INFO L130 BoogieDeclarations]: Found specification of procedure fmin_double [2018-09-21 18:12:16,834 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-21 18:12:16,834 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-21 18:12:16,834 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-21 18:12:16,834 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intFLOATTYPE8 [2018-09-21 18:12:16,835 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2018-09-21 18:12:16,835 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2018-09-21 18:12:16,835 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2018-09-21 18:12:17,134 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-21 18:12:17,171 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-21 18:12:17,196 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-21 18:12:17,387 INFO L373 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-21 18:12:17,388 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 06:12:17 BoogieIcfgContainer [2018-09-21 18:12:17,388 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-21 18:12:17,392 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-21 18:12:17,392 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-21 18:12:17,396 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-21 18:12:17,397 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 06:12:16" (1/3) ... [2018-09-21 18:12:17,398 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b322ab0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 06:12:17, skipping insertion in model container [2018-09-21 18:12:17,399 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:12:16" (2/3) ... [2018-09-21 18:12:17,399 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b322ab0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 06:12:17, skipping insertion in model container [2018-09-21 18:12:17,399 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 06:12:17" (3/3) ... [2018-09-21 18:12:17,404 INFO L112 eAbstractionObserver]: Analyzing ICFG double_req_bl_1230_true-unreach-call.c [2018-09-21 18:12:17,417 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-21 18:12:17,429 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-21 18:12:17,468 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-21 18:12:17,469 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-21 18:12:17,469 INFO L382 AbstractCegarLoop]: Hoare is false [2018-09-21 18:12:17,470 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-21 18:12:17,470 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-21 18:12:17,470 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-21 18:12:17,470 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-21 18:12:17,470 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-21 18:12:17,470 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-21 18:12:17,488 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states. [2018-09-21 18:12:17,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-09-21 18:12:17,501 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:12:17,503 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-21 18:12:17,505 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:12:17,511 INFO L82 PathProgramCache]: Analyzing trace with hash 107662263, now seen corresponding path program 1 times [2018-09-21 18:12:17,516 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-21 18:12:17,517 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) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2018-09-21 18:12:17,530 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:12:17,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:12:17,613 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-21 18:12:17,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-21 18:12:17,636 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-21 18:12:17,654 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:12:17,655 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-09-21 18:12:17,659 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-09-21 18:12:17,674 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-09-21 18:12:17,675 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-09-21 18:12:17,678 INFO L87 Difference]: Start difference. First operand 49 states. Second operand 2 states. [2018-09-21 18:12:17,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:12:17,703 INFO L93 Difference]: Finished difference Result 49 states and 56 transitions. [2018-09-21 18:12:17,703 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-09-21 18:12:17,705 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 24 [2018-09-21 18:12:17,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:12:17,719 INFO L225 Difference]: With dead ends: 49 [2018-09-21 18:12:17,721 INFO L226 Difference]: Without dead ends: 45 [2018-09-21 18:12:17,723 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-09-21 18:12:17,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2018-09-21 18:12:17,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2018-09-21 18:12:17,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2018-09-21 18:12:17,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 52 transitions. [2018-09-21 18:12:17,779 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 52 transitions. Word has length 24 [2018-09-21 18:12:17,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:12:17,782 INFO L480 AbstractCegarLoop]: Abstraction has 45 states and 52 transitions. [2018-09-21 18:12:17,782 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-09-21 18:12:17,782 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 52 transitions. [2018-09-21 18:12:17,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-09-21 18:12:17,785 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:12:17,785 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-21 18:12:17,785 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:12:17,786 INFO L82 PathProgramCache]: Analyzing trace with hash 27912084, now seen corresponding path program 1 times [2018-09-21 18:12:17,787 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-21 18:12:17,787 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 18:12:17,792 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:12:17,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:12:17,871 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-21 18:12:17,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-21 18:12:17,971 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-21 18:12:17,986 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:12:17,987 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-21 18:12:17,990 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-21 18:12:17,990 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-21 18:12:17,991 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-21 18:12:17,991 INFO L87 Difference]: Start difference. First operand 45 states and 52 transitions. Second operand 4 states. [2018-09-21 18:12:18,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:12:18,114 INFO L93 Difference]: Finished difference Result 48 states and 56 transitions. [2018-09-21 18:12:18,115 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-21 18:12:18,115 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 37 [2018-09-21 18:12:18,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:12:18,119 INFO L225 Difference]: With dead ends: 48 [2018-09-21 18:12:18,119 INFO L226 Difference]: Without dead ends: 48 [2018-09-21 18:12:18,120 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-21 18:12:18,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2018-09-21 18:12:18,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2018-09-21 18:12:18,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2018-09-21 18:12:18,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 56 transitions. [2018-09-21 18:12:18,132 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 56 transitions. Word has length 37 [2018-09-21 18:12:18,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:12:18,133 INFO L480 AbstractCegarLoop]: Abstraction has 48 states and 56 transitions. [2018-09-21 18:12:18,133 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-21 18:12:18,134 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 56 transitions. [2018-09-21 18:12:18,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-09-21 18:12:18,136 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:12:18,136 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-21 18:12:18,136 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:12:18,136 INFO L82 PathProgramCache]: Analyzing trace with hash -605167360, now seen corresponding path program 1 times [2018-09-21 18:12:18,138 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-21 18:12:18,139 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2018-09-21 18:12:18,151 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:12:18,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:12:18,258 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-21 18:12:18,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-21 18:12:18,381 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-21 18:12:18,395 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:12:18,396 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-21 18:12:18,396 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-21 18:12:18,397 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-21 18:12:18,398 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-21 18:12:18,398 INFO L87 Difference]: Start difference. First operand 48 states and 56 transitions. Second operand 4 states. [2018-09-21 18:12:18,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:12:18,469 INFO L93 Difference]: Finished difference Result 51 states and 60 transitions. [2018-09-21 18:12:18,471 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-21 18:12:18,471 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 38 [2018-09-21 18:12:18,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:12:18,473 INFO L225 Difference]: With dead ends: 51 [2018-09-21 18:12:18,473 INFO L226 Difference]: Without dead ends: 51 [2018-09-21 18:12:18,474 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-21 18:12:18,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2018-09-21 18:12:18,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 48. [2018-09-21 18:12:18,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2018-09-21 18:12:18,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 56 transitions. [2018-09-21 18:12:18,484 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 56 transitions. Word has length 38 [2018-09-21 18:12:18,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:12:18,485 INFO L480 AbstractCegarLoop]: Abstraction has 48 states and 56 transitions. [2018-09-21 18:12:18,485 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-21 18:12:18,486 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 56 transitions. [2018-09-21 18:12:18,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2018-09-21 18:12:18,488 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:12:18,488 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-21 18:12:18,488 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:12:18,488 INFO L82 PathProgramCache]: Analyzing trace with hash 70594328, now seen corresponding path program 1 times [2018-09-21 18:12:18,489 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-21 18:12:18,489 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2018-09-21 18:12:18,502 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:12:18,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:12:18,575 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-21 18:12:18,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-21 18:12:18,721 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-21 18:12:18,739 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:12:18,739 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-21 18:12:18,740 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-21 18:12:18,740 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-21 18:12:18,740 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-21 18:12:18,742 INFO L87 Difference]: Start difference. First operand 48 states and 56 transitions. Second operand 4 states. [2018-09-21 18:12:18,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:12:18,888 INFO L93 Difference]: Finished difference Result 51 states and 60 transitions. [2018-09-21 18:12:18,889 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-21 18:12:18,889 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 39 [2018-09-21 18:12:18,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:12:18,892 INFO L225 Difference]: With dead ends: 51 [2018-09-21 18:12:18,892 INFO L226 Difference]: Without dead ends: 51 [2018-09-21 18:12:18,892 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-21 18:12:18,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2018-09-21 18:12:18,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 48. [2018-09-21 18:12:18,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2018-09-21 18:12:18,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 56 transitions. [2018-09-21 18:12:18,901 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 56 transitions. Word has length 39 [2018-09-21 18:12:18,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:12:18,902 INFO L480 AbstractCegarLoop]: Abstraction has 48 states and 56 transitions. [2018-09-21 18:12:18,902 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-21 18:12:18,902 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 56 transitions. [2018-09-21 18:12:18,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-09-21 18:12:18,905 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:12:18,905 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-21 18:12:18,905 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:12:18,905 INFO L82 PathProgramCache]: Analyzing trace with hash -1629241852, now seen corresponding path program 1 times [2018-09-21 18:12:18,906 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-21 18:12:18,906 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2018-09-21 18:12:18,917 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:12:18,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:12:19,005 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-21 18:12:19,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-21 18:12:19,032 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-21 18:12:19,044 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:12:19,044 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-21 18:12:19,045 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-21 18:12:19,045 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-21 18:12:19,045 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-21 18:12:19,045 INFO L87 Difference]: Start difference. First operand 48 states and 56 transitions. Second operand 4 states. [2018-09-21 18:12:19,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:12:19,162 INFO L93 Difference]: Finished difference Result 51 states and 60 transitions. [2018-09-21 18:12:19,164 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-21 18:12:19,164 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 40 [2018-09-21 18:12:19,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:12:19,166 INFO L225 Difference]: With dead ends: 51 [2018-09-21 18:12:19,166 INFO L226 Difference]: Without dead ends: 51 [2018-09-21 18:12:19,166 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-21 18:12:19,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2018-09-21 18:12:19,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 48. [2018-09-21 18:12:19,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2018-09-21 18:12:19,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 56 transitions. [2018-09-21 18:12:19,175 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 56 transitions. Word has length 40 [2018-09-21 18:12:19,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:12:19,176 INFO L480 AbstractCegarLoop]: Abstraction has 48 states and 56 transitions. [2018-09-21 18:12:19,177 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-21 18:12:19,177 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 56 transitions. [2018-09-21 18:12:19,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-09-21 18:12:19,178 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:12:19,179 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-21 18:12:19,180 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:12:19,180 INFO L82 PathProgramCache]: Analyzing trace with hash -1922644859, now seen corresponding path program 1 times [2018-09-21 18:12:19,181 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-21 18:12:19,181 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2018-09-21 18:12:19,193 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:12:19,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:12:19,258 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-21 18:12:19,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-21 18:12:19,692 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-21 18:12:19,707 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:12:19,708 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-09-21 18:12:19,709 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-21 18:12:19,709 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-21 18:12:19,709 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-09-21 18:12:19,709 INFO L87 Difference]: Start difference. First operand 48 states and 56 transitions. Second operand 9 states. [2018-09-21 18:12:20,044 WARN L178 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 6 [2018-09-21 18:12:20,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:12:20,543 INFO L93 Difference]: Finished difference Result 53 states and 61 transitions. [2018-09-21 18:12:20,550 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-09-21 18:12:20,550 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 40 [2018-09-21 18:12:20,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:12:20,551 INFO L225 Difference]: With dead ends: 53 [2018-09-21 18:12:20,551 INFO L226 Difference]: Without dead ends: 48 [2018-09-21 18:12:20,552 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2018-09-21 18:12:20,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2018-09-21 18:12:20,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 45. [2018-09-21 18:12:20,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2018-09-21 18:12:20,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 51 transitions. [2018-09-21 18:12:20,560 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 51 transitions. Word has length 40 [2018-09-21 18:12:20,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:12:20,560 INFO L480 AbstractCegarLoop]: Abstraction has 45 states and 51 transitions. [2018-09-21 18:12:20,561 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-21 18:12:20,561 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 51 transitions. [2018-09-21 18:12:20,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2018-09-21 18:12:20,564 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:12:20,564 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-21 18:12:20,565 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:12:20,565 INFO L82 PathProgramCache]: Analyzing trace with hash -1976004003, now seen corresponding path program 1 times [2018-09-21 18:12:20,566 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-21 18:12:20,566 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) Waiting until toolchain timeout for monitored process 8 with mathsat -unsat_core_generation=3 [2018-09-21 18:12:20,572 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:12:20,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:12:20,671 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-21 18:12:20,770 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 18:12:20,770 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-21 18:12:20,784 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:12:20,784 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-21 18:12:20,785 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-21 18:12:20,785 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-21 18:12:20,785 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-21 18:12:20,786 INFO L87 Difference]: Start difference. First operand 45 states and 51 transitions. Second operand 4 states. [2018-09-21 18:12:20,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:12:20,826 INFO L93 Difference]: Finished difference Result 48 states and 55 transitions. [2018-09-21 18:12:20,826 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-21 18:12:20,826 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 57 [2018-09-21 18:12:20,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:12:20,828 INFO L225 Difference]: With dead ends: 48 [2018-09-21 18:12:20,828 INFO L226 Difference]: Without dead ends: 48 [2018-09-21 18:12:20,828 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-21 18:12:20,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2018-09-21 18:12:20,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2018-09-21 18:12:20,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2018-09-21 18:12:20,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 55 transitions. [2018-09-21 18:12:20,836 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 55 transitions. Word has length 57 [2018-09-21 18:12:20,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:12:20,838 INFO L480 AbstractCegarLoop]: Abstraction has 48 states and 55 transitions. [2018-09-21 18:12:20,838 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-21 18:12:20,838 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 55 transitions. [2018-09-21 18:12:20,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2018-09-21 18:12:20,839 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:12:20,839 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-21 18:12:20,840 INFO L423 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:12:20,840 INFO L82 PathProgramCache]: Analyzing trace with hash 1553097201, now seen corresponding path program 1 times [2018-09-21 18:12:20,840 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-21 18:12:20,840 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 18:12:20,847 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:12:20,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:12:20,941 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-21 18:12:20,976 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 18:12:20,976 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-21 18:12:20,991 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:12:20,991 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-21 18:12:20,992 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-21 18:12:20,992 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-21 18:12:20,993 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-21 18:12:20,994 INFO L87 Difference]: Start difference. First operand 48 states and 55 transitions. Second operand 4 states. [2018-09-21 18:12:21,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:12:21,041 INFO L93 Difference]: Finished difference Result 51 states and 59 transitions. [2018-09-21 18:12:21,041 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-21 18:12:21,041 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 58 [2018-09-21 18:12:21,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:12:21,043 INFO L225 Difference]: With dead ends: 51 [2018-09-21 18:12:21,043 INFO L226 Difference]: Without dead ends: 51 [2018-09-21 18:12:21,044 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-21 18:12:21,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2018-09-21 18:12:21,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 48. [2018-09-21 18:12:21,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2018-09-21 18:12:21,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 55 transitions. [2018-09-21 18:12:21,050 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 55 transitions. Word has length 58 [2018-09-21 18:12:21,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:12:21,051 INFO L480 AbstractCegarLoop]: Abstraction has 48 states and 55 transitions. [2018-09-21 18:12:21,051 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-21 18:12:21,051 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 55 transitions. [2018-09-21 18:12:21,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2018-09-21 18:12:21,054 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:12:21,054 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-21 18:12:21,054 INFO L423 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:12:21,055 INFO L82 PathProgramCache]: Analyzing trace with hash -2111546248, now seen corresponding path program 1 times [2018-09-21 18:12:21,056 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-21 18:12:21,056 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 18:12:21,067 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:12:21,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:12:21,165 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-21 18:12:21,341 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 18:12:21,341 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-21 18:12:21,357 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:12:21,357 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-09-21 18:12:21,357 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-21 18:12:21,358 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-21 18:12:21,358 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-09-21 18:12:21,358 INFO L87 Difference]: Start difference. First operand 48 states and 55 transitions. Second operand 5 states. [2018-09-21 18:12:21,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:12:21,788 INFO L93 Difference]: Finished difference Result 51 states and 57 transitions. [2018-09-21 18:12:21,790 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-09-21 18:12:21,790 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 59 [2018-09-21 18:12:21,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:12:21,792 INFO L225 Difference]: With dead ends: 51 [2018-09-21 18:12:21,792 INFO L226 Difference]: Without dead ends: 48 [2018-09-21 18:12:21,793 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-09-21 18:12:21,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2018-09-21 18:12:21,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2018-09-21 18:12:21,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2018-09-21 18:12:21,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 54 transitions. [2018-09-21 18:12:21,799 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 54 transitions. Word has length 59 [2018-09-21 18:12:21,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:12:21,800 INFO L480 AbstractCegarLoop]: Abstraction has 48 states and 54 transitions. [2018-09-21 18:12:21,800 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-21 18:12:21,801 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 54 transitions. [2018-09-21 18:12:21,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2018-09-21 18:12:21,802 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:12:21,802 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-21 18:12:21,802 INFO L423 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:12:21,804 INFO L82 PathProgramCache]: Analyzing trace with hash -1410481670, now seen corresponding path program 1 times [2018-09-21 18:12:21,804 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-21 18:12:21,804 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 18:12:21,809 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:12:21,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:12:21,916 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-21 18:12:22,174 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 18:12:22,175 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-21 18:12:22,186 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:12:22,186 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2018-09-21 18:12:22,187 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-09-21 18:12:22,187 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-09-21 18:12:22,187 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2018-09-21 18:12:22,187 INFO L87 Difference]: Start difference. First operand 48 states and 54 transitions. Second operand 10 states. [2018-09-21 18:12:22,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:12:22,786 INFO L93 Difference]: Finished difference Result 53 states and 59 transitions. [2018-09-21 18:12:22,787 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-09-21 18:12:22,787 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 59 [2018-09-21 18:12:22,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:12:22,788 INFO L225 Difference]: With dead ends: 53 [2018-09-21 18:12:22,789 INFO L226 Difference]: Without dead ends: 45 [2018-09-21 18:12:22,789 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2018-09-21 18:12:22,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2018-09-21 18:12:22,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2018-09-21 18:12:22,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2018-09-21 18:12:22,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 49 transitions. [2018-09-21 18:12:22,800 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 49 transitions. Word has length 59 [2018-09-21 18:12:22,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:12:22,801 INFO L480 AbstractCegarLoop]: Abstraction has 45 states and 49 transitions. [2018-09-21 18:12:22,801 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-09-21 18:12:22,801 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 49 transitions. [2018-09-21 18:12:22,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2018-09-21 18:12:22,810 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:12:22,811 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-21 18:12:22,811 INFO L423 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:12:22,811 INFO L82 PathProgramCache]: Analyzing trace with hash -1887527199, now seen corresponding path program 1 times [2018-09-21 18:12:22,812 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-21 18:12:22,812 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 12 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2018-09-21 18:12:22,825 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 12 with mathsat -unsat_core_generation=3 [2018-09-21 18:12:22,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:12:22,911 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-21 18:12:22,937 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 18:12:22,937 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-21 18:12:22,949 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:12:22,949 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-21 18:12:22,950 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-21 18:12:22,950 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-21 18:12:22,950 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-21 18:12:22,951 INFO L87 Difference]: Start difference. First operand 45 states and 49 transitions. Second operand 4 states. [2018-09-21 18:12:22,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:12:22,964 INFO L93 Difference]: Finished difference Result 48 states and 52 transitions. [2018-09-21 18:12:22,966 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-21 18:12:22,966 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2018-09-21 18:12:22,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:12:22,967 INFO L225 Difference]: With dead ends: 48 [2018-09-21 18:12:22,967 INFO L226 Difference]: Without dead ends: 47 [2018-09-21 18:12:22,968 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-21 18:12:22,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2018-09-21 18:12:22,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 45. [2018-09-21 18:12:22,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2018-09-21 18:12:22,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 49 transitions. [2018-09-21 18:12:22,973 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 49 transitions. Word has length 59 [2018-09-21 18:12:22,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:12:22,973 INFO L480 AbstractCegarLoop]: Abstraction has 45 states and 49 transitions. [2018-09-21 18:12:22,973 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-21 18:12:22,973 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 49 transitions. [2018-09-21 18:12:22,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2018-09-21 18:12:22,976 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:12:22,976 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-21 18:12:22,977 INFO L423 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:12:22,977 INFO L82 PathProgramCache]: Analyzing trace with hash 1948654069, now seen corresponding path program 1 times [2018-09-21 18:12:22,977 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-21 18:12:22,978 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 18:12:22,985 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:12:23,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:12:23,078 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-21 18:12:23,106 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 18:12:23,107 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-21 18:12:23,117 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:12:23,117 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-21 18:12:23,117 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-21 18:12:23,118 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-21 18:12:23,118 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-21 18:12:23,118 INFO L87 Difference]: Start difference. First operand 45 states and 49 transitions. Second operand 4 states. [2018-09-21 18:12:23,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:12:23,137 INFO L93 Difference]: Finished difference Result 48 states and 52 transitions. [2018-09-21 18:12:23,138 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-21 18:12:23,138 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 60 [2018-09-21 18:12:23,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:12:23,139 INFO L225 Difference]: With dead ends: 48 [2018-09-21 18:12:23,139 INFO L226 Difference]: Without dead ends: 47 [2018-09-21 18:12:23,140 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-21 18:12:23,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2018-09-21 18:12:23,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 45. [2018-09-21 18:12:23,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2018-09-21 18:12:23,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 49 transitions. [2018-09-21 18:12:23,144 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 49 transitions. Word has length 60 [2018-09-21 18:12:23,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:12:23,145 INFO L480 AbstractCegarLoop]: Abstraction has 45 states and 49 transitions. [2018-09-21 18:12:23,146 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-21 18:12:23,146 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 49 transitions. [2018-09-21 18:12:23,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2018-09-21 18:12:23,146 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:12:23,147 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-21 18:12:23,147 INFO L423 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:12:23,147 INFO L82 PathProgramCache]: Analyzing trace with hash 1655251062, now seen corresponding path program 1 times [2018-09-21 18:12:23,149 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-21 18:12:23,149 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 14 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2018-09-21 18:12:23,159 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 14 with mathsat -unsat_core_generation=3 [2018-09-21 18:12:23,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:12:23,247 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-21 18:12:23,474 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 18:12:23,474 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-21 18:12:23,485 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:12:23,485 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-09-21 18:12:23,486 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-21 18:12:23,486 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-21 18:12:23,486 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-09-21 18:12:23,486 INFO L87 Difference]: Start difference. First operand 45 states and 49 transitions. Second operand 9 states. [2018-09-21 18:12:23,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:12:23,815 INFO L93 Difference]: Finished difference Result 43 states and 47 transitions. [2018-09-21 18:12:23,815 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-09-21 18:12:23,815 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 60 [2018-09-21 18:12:23,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:12:23,816 INFO L225 Difference]: With dead ends: 43 [2018-09-21 18:12:23,816 INFO L226 Difference]: Without dead ends: 0 [2018-09-21 18:12:23,816 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2018-09-21 18:12:23,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-09-21 18:12:23,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-09-21 18:12:23,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-09-21 18:12:23,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-09-21 18:12:23,819 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 60 [2018-09-21 18:12:23,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:12:23,819 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-09-21 18:12:23,819 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-21 18:12:23,819 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-09-21 18:12:23,820 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-09-21 18:12:23,826 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.09 06:12:23 BoogieIcfgContainer [2018-09-21 18:12:23,826 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-21 18:12:23,827 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-09-21 18:12:23,827 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-09-21 18:12:23,827 INFO L276 PluginConnector]: Witness Printer initialized [2018-09-21 18:12:23,827 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 06:12:17" (3/4) ... [2018-09-21 18:12:23,831 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-09-21 18:12:23,838 INFO L316 RCFGBacktranslator]: Ignoring RootEdge to procedure isnan_double [2018-09-21 18:12:23,838 INFO L316 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-09-21 18:12:23,838 INFO L316 RCFGBacktranslator]: Ignoring RootEdge to procedure __fpclassify_double [2018-09-21 18:12:23,839 INFO L316 RCFGBacktranslator]: Ignoring RootEdge to procedure fmin_double [2018-09-21 18:12:23,839 INFO L316 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-09-21 18:12:23,855 INFO L850 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2018-09-21 18:12:23,855 INFO L850 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2018-09-21 18:12:23,855 INFO L850 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-09-21 18:12:23,926 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2018-09-21 18:12:23,927 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-09-21 18:12:23,931 INFO L168 Benchmark]: Toolchain (without parser) took 7647.63 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 195.6 MB). Free memory was 949.2 MB in the beginning and 1.2 GB in the end (delta: -235.5 MB). Peak memory consumption was 294.5 MB. Max. memory is 11.5 GB. [2018-09-21 18:12:23,933 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-09-21 18:12:23,933 INFO L168 Benchmark]: CACSL2BoogieTranslator took 339.58 ms. Allocated memory is still 1.0 GB. Free memory was 949.2 MB in the beginning and 938.4 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-09-21 18:12:23,934 INFO L168 Benchmark]: Boogie Preprocessor took 50.28 ms. Allocated memory is still 1.0 GB. Free memory was 938.4 MB in the beginning and 933.1 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-09-21 18:12:23,935 INFO L168 Benchmark]: RCFGBuilder took 709.84 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 131.6 MB). Free memory was 933.1 MB in the beginning and 1.1 GB in the end (delta: -166.0 MB). Peak memory consumption was 22.1 MB. Max. memory is 11.5 GB. [2018-09-21 18:12:23,936 INFO L168 Benchmark]: TraceAbstraction took 6434.35 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 792.9 MB in the end (delta: 306.2 MB). Peak memory consumption was 306.2 MB. Max. memory is 11.5 GB. [2018-09-21 18:12:23,936 INFO L168 Benchmark]: Witness Printer took 100.07 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 64.0 MB). Free memory was 792.9 MB in the beginning and 1.2 GB in the end (delta: -391.8 MB). Peak memory consumption was 6.5 MB. Max. memory is 11.5 GB. [2018-09-21 18:12:23,942 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 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 339.58 ms. Allocated memory is still 1.0 GB. Free memory was 949.2 MB in the beginning and 938.4 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 50.28 ms. Allocated memory is still 1.0 GB. Free memory was 938.4 MB in the beginning and 933.1 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 709.84 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 131.6 MB). Free memory was 933.1 MB in the beginning and 1.1 GB in the end (delta: -166.0 MB). Peak memory consumption was 22.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 6434.35 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 792.9 MB in the end (delta: 306.2 MB). Peak memory consumption was 306.2 MB. Max. memory is 11.5 GB. * Witness Printer took 100.07 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 64.0 MB). Free memory was 792.9 MB in the beginning and 1.2 GB in the end (delta: -391.8 MB). Peak memory consumption was 6.5 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 66]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 49 locations, 1 error locations. SAFE Result, 6.3s OverallTime, 13 OverallIterations, 2 TraceHistogramMax, 2.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 654 SDtfs, 31 SDslu, 1808 SDs, 0 SdLazy, 215 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 631 GetRequests, 576 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 2.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=49occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 13 MinimizatonAttempts, 19 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 1.8s InterpolantComputationTime, 630 NumberOfCodeBlocks, 630 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 617 ConstructedInterpolants, 3 QuantifiedInterpolants, 46527 SizeOfPredicates, 15 NumberOfNonLiveVariables, 1357 ConjunctsInSsa, 63 ConjunctsInUnsatCore, 13 InterpolantComputations, 13 PerfectInterpolantSequences, 126/126 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...