/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/Ultimate.py --spec ../../../trunk/examples/svcomp/ReachSafety.prp --file ../../../trunk/examples/svcomp/float-newlib/double_req_bl_1232a_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_1232a_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 003153f3ad6cbb58054db9843ced215cd3b72896 --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_1232a_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 003153f3ad6cbb58054db9843ced215cd3b72896 --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 18:12:45,403 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-21 18:12:45,405 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-21 18:12:45,421 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-21 18:12:45,421 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-21 18:12:45,422 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-21 18:12:45,423 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-21 18:12:45,425 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-21 18:12:45,427 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-21 18:12:45,428 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-21 18:12:45,428 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-21 18:12:45,429 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-21 18:12:45,430 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-21 18:12:45,431 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-21 18:12:45,432 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-21 18:12:45,432 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-21 18:12:45,433 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-21 18:12:45,436 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-21 18:12:45,438 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-21 18:12:45,445 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-21 18:12:45,446 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-21 18:12:45,447 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-21 18:12:45,452 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-21 18:12:45,452 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-21 18:12:45,452 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-21 18:12:45,453 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-21 18:12:45,455 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-21 18:12:45,455 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-21 18:12:45,456 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-21 18:12:45,457 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-21 18:12:45,458 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-21 18:12:45,459 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-21 18:12:45,459 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-21 18:12:45,459 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-21 18:12:45,460 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-21 18:12:45,461 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-21 18:12:45,461 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-09-21 18:12:45,477 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-21 18:12:45,477 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-21 18:12:45,478 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-21 18:12:45,478 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-09-21 18:12:45,479 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-09-21 18:12:45,479 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-09-21 18:12:45,479 INFO L133 SettingsManager]: * Use SBE=true [2018-09-21 18:12:45,479 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-21 18:12:45,479 INFO L133 SettingsManager]: * sizeof long=4 [2018-09-21 18:12:45,480 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-21 18:12:45,480 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-09-21 18:12:45,481 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-21 18:12:45,481 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-21 18:12:45,481 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-21 18:12:45,481 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-21 18:12:45,481 INFO L133 SettingsManager]: * sizeof long double=12 [2018-09-21 18:12:45,481 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-21 18:12:45,482 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-21 18:12:45,482 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-21 18:12:45,482 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-21 18:12:45,482 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-21 18:12:45,482 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-21 18:12:45,484 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-21 18:12:45,484 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-21 18:12:45,484 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-21 18:12:45,484 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-21 18:12:45,484 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-09-21 18:12:45,485 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-21 18:12:45,485 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-21 18:12:45,485 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 -> 003153f3ad6cbb58054db9843ced215cd3b72896 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 18:12:45,535 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-21 18:12:45,549 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-21 18:12:45,553 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-21 18:12:45,555 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-21 18:12:45,555 INFO L276 PluginConnector]: CDTParser initialized [2018-09-21 18:12:45,556 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1232a_true-unreach-call.c [2018-09-21 18:12:45,910 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c078d995a/2dbbf24135e34c74929fe4d445cdd137/FLAGfe90bb246 [2018-09-21 18:12:46,035 INFO L277 CDTParser]: Found 1 translation units. [2018-09-21 18:12:46,036 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1232a_true-unreach-call.c [2018-09-21 18:12:46,045 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c078d995a/2dbbf24135e34c74929fe4d445cdd137/FLAGfe90bb246 [2018-09-21 18:12:46,065 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c078d995a/2dbbf24135e34c74929fe4d445cdd137 [2018-09-21 18:12:46,069 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-21 18:12:46,072 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-21 18:12:46,073 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-21 18:12:46,074 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-21 18:12:46,080 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-21 18:12:46,081 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 06:12:46" (1/1) ... [2018-09-21 18:12:46,084 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c01ba73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:12:46, skipping insertion in model container [2018-09-21 18:12:46,085 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 06:12:46" (1/1) ... [2018-09-21 18:12:46,097 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-21 18:12:46,355 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-21 18:12:46,375 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-21 18:12:46,393 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-21 18:12:46,421 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:12:46 WrapperNode [2018-09-21 18:12:46,421 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-21 18:12:46,422 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-21 18:12:46,422 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-21 18:12:46,422 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-21 18:12:46,443 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:12:46" (1/1) ... [2018-09-21 18:12:46,443 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:12:46" (1/1) ... [2018-09-21 18:12:46,456 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:12:46" (1/1) ... [2018-09-21 18:12:46,457 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:12:46" (1/1) ... [2018-09-21 18:12:46,467 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:12:46" (1/1) ... [2018-09-21 18:12:46,473 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:12:46" (1/1) ... [2018-09-21 18:12:46,476 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:12:46" (1/1) ... [2018-09-21 18:12:46,479 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-21 18:12:46,480 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-21 18:12:46,480 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-21 18:12:46,481 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-21 18:12:46,482 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:12:46" (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 18:12:46,559 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-21 18:12:46,560 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-21 18:12:46,560 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2018-09-21 18:12:46,560 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_double [2018-09-21 18:12:46,560 INFO L138 BoogieDeclarations]: Found implementation of procedure fmin_double [2018-09-21 18:12:46,560 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2018-09-21 18:12:46,563 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-21 18:12:46,563 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-09-21 18:12:46,563 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2018-09-21 18:12:46,564 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2018-09-21 18:12:46,564 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_double [2018-09-21 18:12:46,564 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-09-21 18:12:46,564 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2018-09-21 18:12:46,565 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-09-21 18:12:46,565 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-09-21 18:12:46,566 INFO L130 BoogieDeclarations]: Found specification of procedure fmin_double [2018-09-21 18:12:46,566 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2018-09-21 18:12:46,566 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-21 18:12:46,566 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-21 18:12:46,566 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-21 18:12:46,568 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real [2018-09-21 18:12:46,568 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2018-09-21 18:12:46,569 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2018-09-21 18:12:46,569 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-09-21 18:12:47,250 INFO L373 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-21 18:12:47,251 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 06:12:47 BoogieIcfgContainer [2018-09-21 18:12:47,251 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-21 18:12:47,253 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-21 18:12:47,253 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-21 18:12:47,257 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-21 18:12:47,257 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 06:12:46" (1/3) ... [2018-09-21 18:12:47,258 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51a553be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 06:12:47, skipping insertion in model container [2018-09-21 18:12:47,258 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:12:46" (2/3) ... [2018-09-21 18:12:47,258 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51a553be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 06:12:47, skipping insertion in model container [2018-09-21 18:12:47,259 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 06:12:47" (3/3) ... [2018-09-21 18:12:47,261 INFO L112 eAbstractionObserver]: Analyzing ICFG double_req_bl_1232a_true-unreach-call.c [2018-09-21 18:12:47,271 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-21 18:12:47,280 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-21 18:12:47,327 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-21 18:12:47,328 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-21 18:12:47,328 INFO L382 AbstractCegarLoop]: Hoare is false [2018-09-21 18:12:47,328 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-21 18:12:47,328 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-21 18:12:47,328 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-21 18:12:47,329 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-21 18:12:47,329 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-21 18:12:47,329 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-21 18:12:47,348 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states. [2018-09-21 18:12:47,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-09-21 18:12:47,360 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:12:47,362 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-21 18:12:47,364 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:12:47,370 INFO L82 PathProgramCache]: Analyzing trace with hash 1095093143, now seen corresponding path program 1 times [2018-09-21 18:12:47,372 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-21 18:12:47,373 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-21 18:12:47,436 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-21 18:12:47,436 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:12:47,436 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-21 18:12:47,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:12:47,540 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 18:12:47,543 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:12:47,544 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-09-21 18:12:47,548 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-09-21 18:12:47,567 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-09-21 18:12:47,568 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-09-21 18:12:47,571 INFO L87 Difference]: Start difference. First operand 64 states. Second operand 2 states. [2018-09-21 18:12:47,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:12:47,614 INFO L93 Difference]: Finished difference Result 64 states and 72 transitions. [2018-09-21 18:12:47,614 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-09-21 18:12:47,616 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 22 [2018-09-21 18:12:47,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:12:47,631 INFO L225 Difference]: With dead ends: 64 [2018-09-21 18:12:47,633 INFO L226 Difference]: Without dead ends: 60 [2018-09-21 18:12:47,637 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 18:12:47,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2018-09-21 18:12:47,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2018-09-21 18:12:47,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2018-09-21 18:12:47,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 68 transitions. [2018-09-21 18:12:47,693 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 68 transitions. Word has length 22 [2018-09-21 18:12:47,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:12:47,694 INFO L480 AbstractCegarLoop]: Abstraction has 60 states and 68 transitions. [2018-09-21 18:12:47,695 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-09-21 18:12:47,695 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 68 transitions. [2018-09-21 18:12:47,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-09-21 18:12:47,698 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:12:47,699 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-21 18:12:47,700 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:12:47,700 INFO L82 PathProgramCache]: Analyzing trace with hash 1483022669, now seen corresponding path program 1 times [2018-09-21 18:12:47,700 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-21 18:12:47,701 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-21 18:12:47,702 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-21 18:12:47,702 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:12:47,703 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-21 18:12:47,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:12:47,859 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 18:12:47,859 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:12:47,860 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-21 18:12:47,863 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-21 18:12:47,865 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-21 18:12:47,866 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-21 18:12:47,868 INFO L87 Difference]: Start difference. First operand 60 states and 68 transitions. Second operand 4 states. [2018-09-21 18:12:47,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:12:47,978 INFO L93 Difference]: Finished difference Result 64 states and 73 transitions. [2018-09-21 18:12:47,978 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-21 18:12:47,978 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 35 [2018-09-21 18:12:47,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:12:47,982 INFO L225 Difference]: With dead ends: 64 [2018-09-21 18:12:47,983 INFO L226 Difference]: Without dead ends: 64 [2018-09-21 18:12:47,983 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 18:12:47,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2018-09-21 18:12:47,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2018-09-21 18:12:47,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2018-09-21 18:12:47,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 73 transitions. [2018-09-21 18:12:47,995 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 73 transitions. Word has length 35 [2018-09-21 18:12:47,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:12:47,996 INFO L480 AbstractCegarLoop]: Abstraction has 64 states and 73 transitions. [2018-09-21 18:12:47,996 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-21 18:12:47,996 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 73 transitions. [2018-09-21 18:12:47,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-09-21 18:12:47,998 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:12:47,998 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 18:12:47,998 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:12:47,998 INFO L82 PathProgramCache]: Analyzing trace with hash 184182308, now seen corresponding path program 1 times [2018-09-21 18:12:47,998 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-21 18:12:47,999 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-21 18:12:48,000 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-21 18:12:48,000 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:12:48,000 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-21 18:12:48,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:12:48,155 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 18:12:48,155 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:12:48,155 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-21 18:12:48,156 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-21 18:12:48,156 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-21 18:12:48,156 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-21 18:12:48,156 INFO L87 Difference]: Start difference. First operand 64 states and 73 transitions. Second operand 4 states. [2018-09-21 18:12:48,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:12:48,233 INFO L93 Difference]: Finished difference Result 68 states and 78 transitions. [2018-09-21 18:12:48,234 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-21 18:12:48,234 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 38 [2018-09-21 18:12:48,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:12:48,236 INFO L225 Difference]: With dead ends: 68 [2018-09-21 18:12:48,236 INFO L226 Difference]: Without dead ends: 68 [2018-09-21 18:12:48,236 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 18:12:48,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2018-09-21 18:12:48,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 64. [2018-09-21 18:12:48,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2018-09-21 18:12:48,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 73 transitions. [2018-09-21 18:12:48,249 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 73 transitions. Word has length 38 [2018-09-21 18:12:48,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:12:48,250 INFO L480 AbstractCegarLoop]: Abstraction has 64 states and 73 transitions. [2018-09-21 18:12:48,250 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-21 18:12:48,250 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 73 transitions. [2018-09-21 18:12:48,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-09-21 18:12:48,252 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:12:48,253 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 18:12:48,253 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:12:48,254 INFO L82 PathProgramCache]: Analyzing trace with hash -1612769051, now seen corresponding path program 1 times [2018-09-21 18:12:48,254 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-21 18:12:48,254 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-21 18:12:48,255 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-21 18:12:48,256 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:12:48,256 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-21 18:12:48,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-09-21 18:12:48,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-09-21 18:12:48,363 INFO L443 BasicCegarLoop]: Counterexample might be feasible [2018-09-21 18:12:48,399 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.09 06:12:48 BoogieIcfgContainer [2018-09-21 18:12:48,399 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-21 18:12:48,400 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-09-21 18:12:48,400 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-09-21 18:12:48,400 INFO L276 PluginConnector]: Witness Printer initialized [2018-09-21 18:12:48,402 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 06:12:47" (3/4) ... [2018-09-21 18:12:48,407 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-09-21 18:12:48,408 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-09-21 18:12:48,409 INFO L168 Benchmark]: Toolchain (without parser) took 2338.92 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 143.7 MB). Free memory was 951.9 MB in the beginning and 1.1 GB in the end (delta: -115.1 MB). Peak memory consumption was 28.5 MB. Max. memory is 11.5 GB. [2018-09-21 18:12:48,412 INFO L168 Benchmark]: CDTParser took 0.23 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 18:12:48,413 INFO L168 Benchmark]: CACSL2BoogieTranslator took 348.53 ms. Allocated memory is still 1.0 GB. Free memory was 951.9 MB in the beginning and 941.1 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-09-21 18:12:48,416 INFO L168 Benchmark]: Boogie Preprocessor took 57.66 ms. Allocated memory is still 1.0 GB. Free memory was 941.1 MB in the beginning and 935.8 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-09-21 18:12:48,418 INFO L168 Benchmark]: RCFGBuilder took 771.01 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 143.7 MB). Free memory was 935.8 MB in the beginning and 1.1 GB in the end (delta: -173.2 MB). Peak memory consumption was 21.9 MB. Max. memory is 11.5 GB. [2018-09-21 18:12:48,420 INFO L168 Benchmark]: TraceAbstraction took 1146.08 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 42.0 MB). Peak memory consumption was 42.0 MB. Max. memory is 11.5 GB. [2018-09-21 18:12:48,421 INFO L168 Benchmark]: Witness Printer took 8.05 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-09-21 18:12:48,429 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 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 348.53 ms. Allocated memory is still 1.0 GB. Free memory was 951.9 MB in the beginning and 941.1 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 57.66 ms. Allocated memory is still 1.0 GB. Free memory was 941.1 MB in the beginning and 935.8 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 771.01 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 143.7 MB). Free memory was 935.8 MB in the beginning and 1.1 GB in the end (delta: -173.2 MB). Peak memory consumption was 21.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1146.08 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 42.0 MB). Peak memory consumption was 42.0 MB. Max. memory is 11.5 GB. * Witness Printer took 8.05 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 80]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 79, overapproximation of someUnaryDOUBLEoperation at line 75. Possible FailurePath: [L74] double x = 0.0; [L75] double y = -0.0; VAL [x=0] [L76] CALL, EXPR fmin_double(x, y) VAL [\old(x)=0, \old(y)=4294967302] [L46] CALL, EXPR __fpclassify_double(x) VAL [\old(x)=0] [L19] __uint32_t msw, lsw; VAL [\old(x)=0, x=0] [L22] FCALL ieee_double_shape_type ew_u; VAL [\old(x)=0, ew_u={4294967300:0}, x=0] [L23] FCALL ew_u.value = (x) VAL [\old(x)=0, ew_u={4294967300:0}, x=0] [L24] EXPR, FCALL ew_u.parts.msw VAL [\old(x)=0, ew_u={4294967300:0}, ew_u.parts.msw=2146435073, x=0] [L24] (msw) = ew_u.parts.msw VAL [\old(x)=0, ew_u={4294967300:0}, ew_u.parts.msw=2146435073, msw=2146435073, x=0] [L24] FCALL (msw) = ew_u.parts.msw VAL [(msw) = ew_u.parts.msw=4294967298, \old(x)=0, ew_u={4294967300:0}, ew_u.parts.msw=2146435073, msw=2146435073, x=0] [L25] EXPR, FCALL ew_u.parts.lsw VAL [\old(x)=0, ew_u={4294967300:0}, ew_u.parts.lsw=4294967297, msw=2146435073, x=0] [L25] (lsw) = ew_u.parts.lsw VAL [\old(x)=0, ew_u={4294967300:0}, ew_u.parts.lsw=4294967297, lsw=4294967297, msw=2146435073, x=0] [L25] FCALL (lsw) = ew_u.parts.lsw VAL [(lsw) = ew_u.parts.lsw=4294967303, \old(x)=0, ew_u={4294967300:0}, ew_u.parts.lsw=4294967297, lsw=4294967297, msw=2146435073, x=0] [L26] COND FALSE !(0) VAL [\old(x)=0, lsw=4294967297, msw=2146435073, x=0] [L28-L29] COND FALSE !((msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000)) VAL [\old(x)=0, lsw=4294967297, msw=2146435073, x=0] [L31-L32] COND FALSE !((msw >= 0x00100000 && msw <= 0x7fefffff) || (msw >= 0x80100000 && msw <= 0xffefffff)) VAL [\old(x)=0, lsw=4294967297, msw=2146435073, x=0] [L34-L35] COND FALSE !((msw >= 0x00000000 && msw <= 0x000fffff) || (msw >= 0x80000000 && msw <= 0x800fffff)) VAL [\old(x)=0, lsw=4294967297, msw=2146435073, x=0] [L38-L39] COND FALSE !((msw == 0x7ff00000 && lsw == 0x00000000) || (msw == 0xfff00000 && lsw == 0x00000000)) [L42] RET return 0; VAL [\old(x)=0, \result=0, lsw=4294967297, msw=2146435073, x=0] [L46] EXPR __fpclassify_double(x) VAL [\old(x)=0, \old(y)=4294967302, __fpclassify_double(x)=0, x=0, y=4294967302] [L46] COND TRUE __fpclassify_double(x) == 0 [L47] RET return y; VAL [\old(x)=0, \old(y)=4294967302, \result=4294967302, x=0, y=4294967302] [L76] EXPR fmin_double(x, y) VAL [fmin_double(x, y)=4294967302, x=0, y=4294967302] [L76] double res = fmin_double(x, y); [L79] EXPR res == -0.0 && __signbit_double(res) == 1 VAL [res=4294967302, res == -0.0 && __signbit_double(res) == 1=0, x=0, y=4294967302] [L79] COND FALSE, EXPR !(res == -0.0 && __signbit_double(res) == 1) VAL [res=4294967302, res == -0.0 && __signbit_double(res) == 1=0, x=0, y=4294967302] [L79] COND TRUE !(res == -0.0 && __signbit_double(res) == 1) [L80] __VERIFIER_error() VAL [res=4294967302, x=0, y=4294967302] - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 67 locations, 1 error locations. UNSAFE Result, 1.0s OverallTime, 4 OverallIterations, 1 TraceHistogramMax, 0.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 209 SDtfs, 0 SDslu, 258 SDs, 0 SdLazy, 21 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=64occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 4 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 133 NumberOfCodeBlocks, 133 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 92 ConstructedInterpolants, 0 QuantifiedInterpolants, 3534 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.23-5eb3fea [2018-09-21 18:12:50,876 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-21 18:12:50,878 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-21 18:12:50,891 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-21 18:12:50,892 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-21 18:12:50,893 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-21 18:12:50,895 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-21 18:12:50,897 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-21 18:12:50,899 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-21 18:12:50,900 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-21 18:12:50,901 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-21 18:12:50,901 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-21 18:12:50,903 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-21 18:12:50,904 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-21 18:12:50,905 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-21 18:12:50,907 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-21 18:12:50,908 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-21 18:12:50,910 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-21 18:12:50,912 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-21 18:12:50,914 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-21 18:12:50,916 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-21 18:12:50,918 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-21 18:12:50,921 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-21 18:12:50,922 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-21 18:12:50,923 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-21 18:12:50,924 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-21 18:12:50,925 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-21 18:12:50,927 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-21 18:12:50,927 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-21 18:12:50,929 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-21 18:12:50,929 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-21 18:12:50,930 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-21 18:12:50,930 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-21 18:12:50,931 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-21 18:12:50,932 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-21 18:12:50,933 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-21 18:12:50,933 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2018-09-21 18:12:50,962 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-21 18:12:50,962 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-21 18:12:50,964 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-21 18:12:50,964 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-09-21 18:12:50,965 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-09-21 18:12:50,965 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-09-21 18:12:50,965 INFO L133 SettingsManager]: * Use SBE=true [2018-09-21 18:12:50,966 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-21 18:12:50,966 INFO L133 SettingsManager]: * sizeof long=4 [2018-09-21 18:12:50,966 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-09-21 18:12:50,966 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-21 18:12:50,966 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-21 18:12:50,966 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-21 18:12:50,967 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-21 18:12:50,967 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-09-21 18:12:50,967 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-09-21 18:12:50,967 INFO L133 SettingsManager]: * sizeof long double=12 [2018-09-21 18:12:50,968 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-21 18:12:50,969 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-21 18:12:50,969 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-21 18:12:50,969 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-21 18:12:50,969 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-21 18:12:50,969 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-21 18:12:50,970 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-21 18:12:50,970 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-21 18:12:50,970 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-21 18:12:50,970 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-21 18:12:50,971 INFO L133 SettingsManager]: * Trace refinement strategy=WOLF [2018-09-21 18:12:50,971 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-21 18:12:50,971 INFO L133 SettingsManager]: * Command for external solver=cvc4nyu --tear-down-incremental --rewrite-divk --print-success --lang smt [2018-09-21 18:12:50,971 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-09-21 18:12:50,972 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 -> 003153f3ad6cbb58054db9843ced215cd3b72896 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 18:12:51,033 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-21 18:12:51,048 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-21 18:12:51,054 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-21 18:12:51,055 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-21 18:12:51,056 INFO L276 PluginConnector]: CDTParser initialized [2018-09-21 18:12:51,057 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1232a_true-unreach-call.c [2018-09-21 18:12:51,441 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7e8f82c7d/b925ef47c395469eb7e77aa3161964b3/FLAGde8d0f3de [2018-09-21 18:12:51,674 INFO L277 CDTParser]: Found 1 translation units. [2018-09-21 18:12:51,681 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1232a_true-unreach-call.c [2018-09-21 18:12:51,690 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7e8f82c7d/b925ef47c395469eb7e77aa3161964b3/FLAGde8d0f3de [2018-09-21 18:12:51,711 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7e8f82c7d/b925ef47c395469eb7e77aa3161964b3 [2018-09-21 18:12:51,716 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-21 18:12:51,720 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-21 18:12:51,721 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-21 18:12:51,721 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-21 18:12:51,731 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-21 18:12:51,732 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 06:12:51" (1/1) ... [2018-09-21 18:12:51,735 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a7968e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:12:51, skipping insertion in model container [2018-09-21 18:12:51,735 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 06:12:51" (1/1) ... [2018-09-21 18:12:51,748 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-21 18:12:52,024 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-21 18:12:52,052 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-21 18:12:52,080 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-21 18:12:52,118 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:12:52 WrapperNode [2018-09-21 18:12:52,118 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-21 18:12:52,119 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-21 18:12:52,119 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-21 18:12:52,119 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-21 18:12:52,135 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:12:52" (1/1) ... [2018-09-21 18:12:52,135 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:12:52" (1/1) ... [2018-09-21 18:12:52,149 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:12:52" (1/1) ... [2018-09-21 18:12:52,150 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:12:52" (1/1) ... [2018-09-21 18:12:52,158 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:12:52" (1/1) ... [2018-09-21 18:12:52,164 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:12:52" (1/1) ... [2018-09-21 18:12:52,167 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:12:52" (1/1) ... [2018-09-21 18:12:52,171 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-21 18:12:52,171 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-21 18:12:52,172 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-21 18:12:52,172 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-21 18:12:52,173 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:12:52" (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 18:12:52,319 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-21 18:12:52,320 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-21 18:12:52,320 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2018-09-21 18:12:52,320 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_double [2018-09-21 18:12:52,320 INFO L138 BoogieDeclarations]: Found implementation of procedure fmin_double [2018-09-21 18:12:52,320 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2018-09-21 18:12:52,320 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-21 18:12:52,321 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-09-21 18:12:52,321 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2018-09-21 18:12:52,321 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2018-09-21 18:12:52,321 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_double [2018-09-21 18:12:52,321 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-09-21 18:12:52,321 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2018-09-21 18:12:52,321 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2018-09-21 18:12:52,322 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-09-21 18:12:52,322 INFO L130 BoogieDeclarations]: Found specification of procedure fmin_double [2018-09-21 18:12:52,322 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2018-09-21 18:12:52,322 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-21 18:12:52,322 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-21 18:12:52,322 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-21 18:12:52,323 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2018-09-21 18:12:52,323 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2018-09-21 18:12:52,323 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intFLOATTYPE8 [2018-09-21 18:12:52,323 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2018-09-21 18:12:52,536 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-21 18:12:52,571 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-21 18:12:52,860 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-21 18:12:52,889 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-21 18:12:52,901 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-21 18:12:52,974 INFO L373 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-21 18:12:52,975 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 06:12:52 BoogieIcfgContainer [2018-09-21 18:12:52,976 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-21 18:12:52,977 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-21 18:12:52,977 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-21 18:12:52,981 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-21 18:12:52,981 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 06:12:51" (1/3) ... [2018-09-21 18:12:52,982 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ccaf28b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 06:12:52, skipping insertion in model container [2018-09-21 18:12:52,982 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:12:52" (2/3) ... [2018-09-21 18:12:52,983 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ccaf28b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 06:12:52, skipping insertion in model container [2018-09-21 18:12:52,983 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 06:12:52" (3/3) ... [2018-09-21 18:12:52,985 INFO L112 eAbstractionObserver]: Analyzing ICFG double_req_bl_1232a_true-unreach-call.c [2018-09-21 18:12:52,996 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-21 18:12:53,005 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-21 18:12:53,051 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-21 18:12:53,052 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-21 18:12:53,052 INFO L382 AbstractCegarLoop]: Hoare is false [2018-09-21 18:12:53,053 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-21 18:12:53,053 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-21 18:12:53,053 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-21 18:12:53,053 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-21 18:12:53,053 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-21 18:12:53,053 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-21 18:12:53,082 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states. [2018-09-21 18:12:53,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-09-21 18:12:53,096 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:12:53,097 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-21 18:12:53,099 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:12:53,105 INFO L82 PathProgramCache]: Analyzing trace with hash 534207900, now seen corresponding path program 1 times [2018-09-21 18:12:53,110 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-21 18:12:53,111 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 18:12:53,117 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:12:53,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:12:53,187 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-21 18:12:53,209 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 18:12:53,209 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-21 18:12:53,223 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:12:53,224 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-09-21 18:12:53,227 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-09-21 18:12:53,240 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-09-21 18:12:53,241 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-09-21 18:12:53,243 INFO L87 Difference]: Start difference. First operand 62 states. Second operand 2 states. [2018-09-21 18:12:53,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:12:53,269 INFO L93 Difference]: Finished difference Result 62 states and 70 transitions. [2018-09-21 18:12:53,269 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-09-21 18:12:53,271 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 21 [2018-09-21 18:12:53,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:12:53,282 INFO L225 Difference]: With dead ends: 62 [2018-09-21 18:12:53,282 INFO L226 Difference]: Without dead ends: 58 [2018-09-21 18:12:53,284 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-09-21 18:12:53,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2018-09-21 18:12:53,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2018-09-21 18:12:53,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2018-09-21 18:12:53,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 66 transitions. [2018-09-21 18:12:53,327 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 66 transitions. Word has length 21 [2018-09-21 18:12:53,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:12:53,327 INFO L480 AbstractCegarLoop]: Abstraction has 58 states and 66 transitions. [2018-09-21 18:12:53,328 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-09-21 18:12:53,328 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 66 transitions. [2018-09-21 18:12:53,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-09-21 18:12:53,330 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:12:53,330 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-21 18:12:53,330 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:12:53,331 INFO L82 PathProgramCache]: Analyzing trace with hash -18702094, now seen corresponding path program 1 times [2018-09-21 18:12:53,331 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-21 18:12:53,332 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 18:12:53,346 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:12:53,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:12:53,425 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-21 18:12:53,489 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 18:12:53,490 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-21 18:12:53,504 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:12:53,504 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-21 18:12:53,506 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-21 18:12:53,506 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-21 18:12:53,506 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-21 18:12:53,509 INFO L87 Difference]: Start difference. First operand 58 states and 66 transitions. Second operand 4 states. [2018-09-21 18:12:53,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:12:53,581 INFO L93 Difference]: Finished difference Result 61 states and 70 transitions. [2018-09-21 18:12:53,582 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-21 18:12:53,582 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 34 [2018-09-21 18:12:53,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:12:53,586 INFO L225 Difference]: With dead ends: 61 [2018-09-21 18:12:53,586 INFO L226 Difference]: Without dead ends: 61 [2018-09-21 18:12:53,587 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-21 18:12:53,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2018-09-21 18:12:53,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2018-09-21 18:12:53,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2018-09-21 18:12:53,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 70 transitions. [2018-09-21 18:12:53,599 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 70 transitions. Word has length 34 [2018-09-21 18:12:53,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:12:53,599 INFO L480 AbstractCegarLoop]: Abstraction has 61 states and 70 transitions. [2018-09-21 18:12:53,600 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-21 18:12:53,600 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 70 transitions. [2018-09-21 18:12:53,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-09-21 18:12:53,601 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:12:53,602 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-21 18:12:53,602 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:12:53,602 INFO L82 PathProgramCache]: Analyzing trace with hash 270058899, now seen corresponding path program 1 times [2018-09-21 18:12:53,603 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-21 18:12:53,603 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 18:12:53,610 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:12:53,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:12:53,703 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-21 18:12:53,945 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 11 [2018-09-21 18:12:53,962 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 10 [2018-09-21 18:12:53,963 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-21 18:12:53,969 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:12:53,987 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-09-21 18:12:53,988 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:24, output treesize:20 [2018-09-21 18:12:54,066 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2018-09-21 18:12:54,082 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 4 [2018-09-21 18:12:54,083 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-21 18:12:54,109 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:12:54,185 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-09-21 18:12:54,186 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:29, output treesize:14 [2018-09-21 18:12:54,872 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 18:12:54,872 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-21 18:12:54,886 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:12:54,886 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2018-09-21 18:12:54,886 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-09-21 18:12:54,887 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-09-21 18:12:54,887 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2018-09-21 18:12:54,890 INFO L87 Difference]: Start difference. First operand 61 states and 70 transitions. Second operand 10 states. [2018-09-21 18:12:55,624 WARN L178 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 29 [2018-09-21 18:12:55,838 WARN L178 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2018-09-21 18:12:59,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:12:59,427 INFO L93 Difference]: Finished difference Result 70 states and 85 transitions. [2018-09-21 18:12:59,438 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-09-21 18:12:59,439 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 35 [2018-09-21 18:12:59,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:12:59,441 INFO L225 Difference]: With dead ends: 70 [2018-09-21 18:12:59,441 INFO L226 Difference]: Without dead ends: 63 [2018-09-21 18:12:59,442 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2018-09-21 18:12:59,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2018-09-21 18:12:59,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2018-09-21 18:12:59,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2018-09-21 18:12:59,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 72 transitions. [2018-09-21 18:12:59,453 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 72 transitions. Word has length 35 [2018-09-21 18:12:59,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:12:59,454 INFO L480 AbstractCegarLoop]: Abstraction has 63 states and 72 transitions. [2018-09-21 18:12:59,454 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-09-21 18:12:59,454 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 72 transitions. [2018-09-21 18:12:59,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-09-21 18:12:59,455 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:12:59,456 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-21 18:12:59,457 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:12:59,457 INFO L82 PathProgramCache]: Analyzing trace with hash -154338930, now seen corresponding path program 1 times [2018-09-21 18:12:59,458 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-21 18:12:59,458 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) [2018-09-21 18:12:59,467 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2018-09-21 18:12:59,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:12:59,541 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-21 18:12:59,573 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 18:12:59,573 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-21 18:12:59,586 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:12:59,586 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-21 18:12:59,586 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-21 18:12:59,587 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-21 18:12:59,587 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-21 18:12:59,587 INFO L87 Difference]: Start difference. First operand 63 states and 72 transitions. Second operand 4 states. [2018-09-21 18:12:59,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:12:59,645 INFO L93 Difference]: Finished difference Result 66 states and 76 transitions. [2018-09-21 18:12:59,646 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-21 18:12:59,646 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 36 [2018-09-21 18:12:59,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:12:59,649 INFO L225 Difference]: With dead ends: 66 [2018-09-21 18:12:59,649 INFO L226 Difference]: Without dead ends: 66 [2018-09-21 18:12:59,649 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-21 18:12:59,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2018-09-21 18:12:59,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 63. [2018-09-21 18:12:59,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2018-09-21 18:12:59,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 72 transitions. [2018-09-21 18:12:59,659 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 72 transitions. Word has length 36 [2018-09-21 18:12:59,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:12:59,659 INFO L480 AbstractCegarLoop]: Abstraction has 63 states and 72 transitions. [2018-09-21 18:12:59,660 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-21 18:12:59,660 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 72 transitions. [2018-09-21 18:12:59,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-09-21 18:12:59,661 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:12:59,661 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 18:12:59,662 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:12:59,662 INFO L82 PathProgramCache]: Analyzing trace with hash -1211823761, now seen corresponding path program 1 times [2018-09-21 18:12:59,662 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-21 18:12:59,662 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) [2018-09-21 18:12:59,670 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2018-09-21 18:12:59,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:12:59,738 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-21 18:12:59,800 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 11 [2018-09-21 18:12:59,805 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 10 [2018-09-21 18:12:59,805 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-21 18:12:59,812 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:12:59,841 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-09-21 18:12:59,841 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:24, output treesize:20 [2018-09-21 18:12:59,890 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2018-09-21 18:12:59,899 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 4 [2018-09-21 18:12:59,900 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-21 18:12:59,904 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:12:59,916 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-09-21 18:12:59,917 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:29, output treesize:14 [2018-09-21 18:13:00,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-21 18:13:00,179 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-21 18:13:00,194 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:13:00,194 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2018-09-21 18:13:00,194 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-09-21 18:13:00,196 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-09-21 18:13:00,196 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2018-09-21 18:13:00,196 INFO L87 Difference]: Start difference. First operand 63 states and 72 transitions. Second operand 10 states. [2018-09-21 18:13:00,551 WARN L178 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2018-09-21 18:13:01,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:13:01,734 INFO L93 Difference]: Finished difference Result 69 states and 82 transitions. [2018-09-21 18:13:01,735 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-09-21 18:13:01,735 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 37 [2018-09-21 18:13:01,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:13:01,737 INFO L225 Difference]: With dead ends: 69 [2018-09-21 18:13:01,737 INFO L226 Difference]: Without dead ends: 62 [2018-09-21 18:13:01,737 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2018-09-21 18:13:01,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2018-09-21 18:13:01,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 60. [2018-09-21 18:13:01,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2018-09-21 18:13:01,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 67 transitions. [2018-09-21 18:13:01,744 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 67 transitions. Word has length 37 [2018-09-21 18:13:01,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:13:01,745 INFO L480 AbstractCegarLoop]: Abstraction has 60 states and 67 transitions. [2018-09-21 18:13:01,745 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-09-21 18:13:01,745 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 67 transitions. [2018-09-21 18:13:01,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2018-09-21 18:13:01,747 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:13:01,747 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-21 18:13:01,748 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:13:01,748 INFO L82 PathProgramCache]: Analyzing trace with hash 353008393, now seen corresponding path program 1 times [2018-09-21 18:13:01,748 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-21 18:13:01,748 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2018-09-21 18:13:01,754 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:13:01,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:13:01,844 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-21 18:13:01,912 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2018-09-21 18:13:01,912 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-21 18:13:01,925 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:13:01,926 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-21 18:13:01,926 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-21 18:13:01,926 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-21 18:13:01,926 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-21 18:13:01,927 INFO L87 Difference]: Start difference. First operand 60 states and 67 transitions. Second operand 4 states. [2018-09-21 18:13:02,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:13:02,032 INFO L93 Difference]: Finished difference Result 63 states and 71 transitions. [2018-09-21 18:13:02,034 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-21 18:13:02,035 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 54 [2018-09-21 18:13:02,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:13:02,036 INFO L225 Difference]: With dead ends: 63 [2018-09-21 18:13:02,036 INFO L226 Difference]: Without dead ends: 63 [2018-09-21 18:13:02,042 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-21 18:13:02,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2018-09-21 18:13:02,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2018-09-21 18:13:02,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2018-09-21 18:13:02,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 71 transitions. [2018-09-21 18:13:02,054 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 71 transitions. Word has length 54 [2018-09-21 18:13:02,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:13:02,054 INFO L480 AbstractCegarLoop]: Abstraction has 63 states and 71 transitions. [2018-09-21 18:13:02,054 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-21 18:13:02,054 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 71 transitions. [2018-09-21 18:13:02,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2018-09-21 18:13:02,061 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:13:02,061 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-21 18:13:02,062 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:13:02,062 INFO L82 PathProgramCache]: Analyzing trace with hash 1732178434, now seen corresponding path program 1 times [2018-09-21 18:13:02,062 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-21 18:13:02,062 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 18:13:02,076 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:13:02,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:13:02,164 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-21 18:13:02,215 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 11 [2018-09-21 18:13:02,221 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 10 [2018-09-21 18:13:02,222 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-21 18:13:02,227 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:13:02,240 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-09-21 18:13:02,241 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:24, output treesize:20 [2018-09-21 18:13:02,283 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2018-09-21 18:13:02,288 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 4 [2018-09-21 18:13:02,289 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-21 18:13:02,292 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:13:02,302 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-09-21 18:13:02,303 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:29, output treesize:14 [2018-09-21 18:13:02,639 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-09-21 18:13:02,639 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-21 18:13:02,653 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:13:02,653 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2018-09-21 18:13:02,654 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-09-21 18:13:02,654 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-09-21 18:13:02,654 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2018-09-21 18:13:02,657 INFO L87 Difference]: Start difference. First operand 63 states and 71 transitions. Second operand 10 states. [2018-09-21 18:13:04,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:13:04,660 INFO L93 Difference]: Finished difference Result 70 states and 79 transitions. [2018-09-21 18:13:04,663 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-09-21 18:13:04,663 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 55 [2018-09-21 18:13:04,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:13:04,665 INFO L225 Difference]: With dead ends: 70 [2018-09-21 18:13:04,665 INFO L226 Difference]: Without dead ends: 63 [2018-09-21 18:13:04,667 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2018-09-21 18:13:04,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2018-09-21 18:13:04,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2018-09-21 18:13:04,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2018-09-21 18:13:04,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 70 transitions. [2018-09-21 18:13:04,675 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 70 transitions. Word has length 55 [2018-09-21 18:13:04,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:13:04,676 INFO L480 AbstractCegarLoop]: Abstraction has 63 states and 70 transitions. [2018-09-21 18:13:04,676 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-09-21 18:13:04,678 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 70 transitions. [2018-09-21 18:13:04,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2018-09-21 18:13:04,679 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:13:04,680 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-21 18:13:04,680 INFO L423 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:13:04,681 INFO L82 PathProgramCache]: Analyzing trace with hash 2057904238, now seen corresponding path program 1 times [2018-09-21 18:13:04,681 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-21 18:13:04,681 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 9 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with mathsat -unsat_core_generation=3 [2018-09-21 18:13:04,689 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:13:04,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:13:04,818 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-21 18:13:04,959 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-21 18:13:04,960 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-21 18:13:04,975 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:13:04,976 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-09-21 18:13:04,976 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-21 18:13:04,977 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-21 18:13:04,977 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-09-21 18:13:04,977 INFO L87 Difference]: Start difference. First operand 63 states and 70 transitions. Second operand 5 states. [2018-09-21 18:13:05,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:13:05,264 INFO L93 Difference]: Finished difference Result 66 states and 72 transitions. [2018-09-21 18:13:05,266 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-09-21 18:13:05,266 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 56 [2018-09-21 18:13:05,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:13:05,267 INFO L225 Difference]: With dead ends: 66 [2018-09-21 18:13:05,268 INFO L226 Difference]: Without dead ends: 63 [2018-09-21 18:13:05,268 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 51 SyntacticMatches, 1 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 18:13:05,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2018-09-21 18:13:05,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2018-09-21 18:13:05,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2018-09-21 18:13:05,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 69 transitions. [2018-09-21 18:13:05,277 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 69 transitions. Word has length 56 [2018-09-21 18:13:05,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:13:05,277 INFO L480 AbstractCegarLoop]: Abstraction has 63 states and 69 transitions. [2018-09-21 18:13:05,278 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-21 18:13:05,278 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 69 transitions. [2018-09-21 18:13:05,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2018-09-21 18:13:05,279 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:13:05,279 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-21 18:13:05,281 INFO L423 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:13:05,281 INFO L82 PathProgramCache]: Analyzing trace with hash 1248557612, now seen corresponding path program 1 times [2018-09-21 18:13:05,281 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-21 18:13:05,282 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 10 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with mathsat -unsat_core_generation=3 [2018-09-21 18:13:05,291 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:13:05,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:13:05,374 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-21 18:13:05,595 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-21 18:13:05,595 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-21 18:13:05,605 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:13:05,605 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-09-21 18:13:05,606 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-09-21 18:13:05,606 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-09-21 18:13:05,606 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-09-21 18:13:05,606 INFO L87 Difference]: Start difference. First operand 63 states and 69 transitions. Second operand 8 states. [2018-09-21 18:13:06,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:13:06,113 INFO L93 Difference]: Finished difference Result 67 states and 73 transitions. [2018-09-21 18:13:06,115 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-21 18:13:06,115 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 56 [2018-09-21 18:13:06,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:13:06,117 INFO L225 Difference]: With dead ends: 67 [2018-09-21 18:13:06,117 INFO L226 Difference]: Without dead ends: 67 [2018-09-21 18:13:06,118 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2018-09-21 18:13:06,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2018-09-21 18:13:06,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2018-09-21 18:13:06,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2018-09-21 18:13:06,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 73 transitions. [2018-09-21 18:13:06,127 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 73 transitions. Word has length 56 [2018-09-21 18:13:06,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:13:06,128 INFO L480 AbstractCegarLoop]: Abstraction has 67 states and 73 transitions. [2018-09-21 18:13:06,128 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-09-21 18:13:06,128 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 73 transitions. [2018-09-21 18:13:06,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2018-09-21 18:13:06,129 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:13:06,131 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-21 18:13:06,131 INFO L423 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:13:06,131 INFO L82 PathProgramCache]: Analyzing trace with hash 750722725, now seen corresponding path program 1 times [2018-09-21 18:13:06,132 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-21 18:13:06,132 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 11 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with mathsat -unsat_core_generation=3 [2018-09-21 18:13:06,139 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:13:06,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:13:06,241 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-21 18:13:06,293 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2018-09-21 18:13:06,293 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-21 18:13:06,304 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:13:06,304 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-21 18:13:06,304 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-21 18:13:06,304 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-21 18:13:06,305 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-21 18:13:06,305 INFO L87 Difference]: Start difference. First operand 67 states and 73 transitions. Second operand 4 states. [2018-09-21 18:13:06,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:13:06,337 INFO L93 Difference]: Finished difference Result 68 states and 74 transitions. [2018-09-21 18:13:06,337 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-21 18:13:06,337 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 56 [2018-09-21 18:13:06,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:13:06,338 INFO L225 Difference]: With dead ends: 68 [2018-09-21 18:13:06,338 INFO L226 Difference]: Without dead ends: 68 [2018-09-21 18:13:06,339 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-21 18:13:06,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2018-09-21 18:13:06,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 65. [2018-09-21 18:13:06,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2018-09-21 18:13:06,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 70 transitions. [2018-09-21 18:13:06,344 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 70 transitions. Word has length 56 [2018-09-21 18:13:06,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:13:06,344 INFO L480 AbstractCegarLoop]: Abstraction has 65 states and 70 transitions. [2018-09-21 18:13:06,344 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-21 18:13:06,345 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 70 transitions. [2018-09-21 18:13:06,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2018-09-21 18:13:06,347 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:13:06,347 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-21 18:13:06,348 INFO L423 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:13:06,348 INFO L82 PathProgramCache]: Analyzing trace with hash -395687202, now seen corresponding path program 1 times [2018-09-21 18:13:06,348 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-21 18:13:06,348 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 12 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with mathsat -unsat_core_generation=3 [2018-09-21 18:13:06,355 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:13:06,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:13:06,464 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-21 18:13:06,565 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 11 [2018-09-21 18:13:06,570 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 10 [2018-09-21 18:13:06,570 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-21 18:13:06,574 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:13:06,587 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-09-21 18:13:06,588 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:24, output treesize:20 [2018-09-21 18:13:06,646 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2018-09-21 18:13:06,658 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 4 [2018-09-21 18:13:06,659 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-21 18:13:06,686 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:13:06,766 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-09-21 18:13:06,767 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:29, output treesize:14 [2018-09-21 18:13:07,668 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-09-21 18:13:07,669 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-21 18:13:07,687 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:13:07,687 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2018-09-21 18:13:07,688 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-09-21 18:13:07,688 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-09-21 18:13:07,689 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2018-09-21 18:13:07,689 INFO L87 Difference]: Start difference. First operand 65 states and 70 transitions. Second operand 10 states. [2018-09-21 18:13:08,429 WARN L178 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2018-09-21 18:13:09,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:13:09,763 INFO L93 Difference]: Finished difference Result 67 states and 69 transitions. [2018-09-21 18:13:09,765 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-09-21 18:13:09,765 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 57 [2018-09-21 18:13:09,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:13:09,766 INFO L225 Difference]: With dead ends: 67 [2018-09-21 18:13:09,766 INFO L226 Difference]: Without dead ends: 57 [2018-09-21 18:13:09,767 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2018-09-21 18:13:09,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2018-09-21 18:13:09,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2018-09-21 18:13:09,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2018-09-21 18:13:09,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 58 transitions. [2018-09-21 18:13:09,774 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 58 transitions. Word has length 57 [2018-09-21 18:13:09,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:13:09,774 INFO L480 AbstractCegarLoop]: Abstraction has 57 states and 58 transitions. [2018-09-21 18:13:09,774 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-09-21 18:13:09,775 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 58 transitions. [2018-09-21 18:13:09,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2018-09-21 18:13:09,778 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:13:09,778 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-21 18:13:09,778 INFO L423 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:13:09,779 INFO L82 PathProgramCache]: Analyzing trace with hash -161364143, now seen corresponding path program 1 times [2018-09-21 18:13:09,779 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-21 18:13:09,779 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 13 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with mathsat -unsat_core_generation=3 [2018-09-21 18:13:09,800 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:13:09,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:13:09,919 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-21 18:13:10,119 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 11 [2018-09-21 18:13:10,125 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 10 [2018-09-21 18:13:10,125 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-21 18:13:10,130 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:13:10,143 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-09-21 18:13:10,144 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:24, output treesize:20 [2018-09-21 18:13:10,213 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2018-09-21 18:13:10,219 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 4 [2018-09-21 18:13:10,219 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-21 18:13:10,223 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:13:10,237 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-09-21 18:13:10,237 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:29, output treesize:14 [2018-09-21 18:13:10,648 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-09-21 18:13:10,648 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-21 18:13:10,659 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:13:10,659 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2018-09-21 18:13:10,660 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-09-21 18:13:10,660 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-09-21 18:13:10,660 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2018-09-21 18:13:10,661 INFO L87 Difference]: Start difference. First operand 57 states and 58 transitions. Second operand 15 states. [2018-09-21 18:13:12,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:13:12,356 INFO L93 Difference]: Finished difference Result 55 states and 56 transitions. [2018-09-21 18:13:12,358 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-09-21 18:13:12,358 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 72 [2018-09-21 18:13:12,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:13:12,358 INFO L225 Difference]: With dead ends: 55 [2018-09-21 18:13:12,359 INFO L226 Difference]: Without dead ends: 0 [2018-09-21 18:13:12,359 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=88, Invalid=562, Unknown=0, NotChecked=0, Total=650 [2018-09-21 18:13:12,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-09-21 18:13:12,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-09-21 18:13:12,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-09-21 18:13:12,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-09-21 18:13:12,360 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 72 [2018-09-21 18:13:12,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:13:12,360 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-09-21 18:13:12,360 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-09-21 18:13:12,363 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-09-21 18:13:12,363 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-09-21 18:13:12,368 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.09 06:13:12 BoogieIcfgContainer [2018-09-21 18:13:12,369 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-21 18:13:12,369 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-09-21 18:13:12,369 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-09-21 18:13:12,370 INFO L276 PluginConnector]: Witness Printer initialized [2018-09-21 18:13:12,371 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 06:12:52" (3/4) ... [2018-09-21 18:13:12,375 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-09-21 18:13:12,381 INFO L316 RCFGBacktranslator]: Ignoring RootEdge to procedure isnan_double [2018-09-21 18:13:12,381 INFO L316 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-09-21 18:13:12,381 INFO L316 RCFGBacktranslator]: Ignoring RootEdge to procedure __fpclassify_double [2018-09-21 18:13:12,382 INFO L316 RCFGBacktranslator]: Ignoring RootEdge to procedure __signbit_double [2018-09-21 18:13:12,382 INFO L316 RCFGBacktranslator]: Ignoring RootEdge to procedure fmin_double [2018-09-21 18:13:12,382 INFO L316 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-09-21 18:13:12,387 INFO L850 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2018-09-21 18:13:12,388 INFO L850 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2018-09-21 18:13:12,388 INFO L850 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-09-21 18:13:12,449 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2018-09-21 18:13:12,449 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-09-21 18:13:12,450 INFO L168 Benchmark]: Toolchain (without parser) took 20733.93 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 191.9 MB). Free memory was 950.5 MB in the beginning and 893.4 MB in the end (delta: 57.2 MB). Peak memory consumption was 249.1 MB. Max. memory is 11.5 GB. [2018-09-21 18:13:12,452 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-09-21 18:13:12,452 INFO L168 Benchmark]: CACSL2BoogieTranslator took 397.14 ms. Allocated memory is still 1.0 GB. Free memory was 950.5 MB in the beginning and 939.8 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-09-21 18:13:12,453 INFO L168 Benchmark]: Boogie Preprocessor took 52.40 ms. Allocated memory is still 1.0 GB. Free memory was 939.8 MB in the beginning and 934.4 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-09-21 18:13:12,453 INFO L168 Benchmark]: RCFGBuilder took 804.33 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 126.4 MB). Free memory was 934.4 MB in the beginning and 1.1 GB in the end (delta: -159.9 MB). Peak memory consumption was 22.0 MB. Max. memory is 11.5 GB. [2018-09-21 18:13:12,454 INFO L168 Benchmark]: TraceAbstraction took 19392.11 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 65.5 MB). Free memory was 1.1 GB in the beginning and 893.4 MB in the end (delta: 201.0 MB). Peak memory consumption was 266.5 MB. Max. memory is 11.5 GB. [2018-09-21 18:13:12,454 INFO L168 Benchmark]: Witness Printer took 79.73 ms. Allocated memory is still 1.2 GB. Free memory is still 893.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-09-21 18:13:12,457 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 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 397.14 ms. Allocated memory is still 1.0 GB. Free memory was 950.5 MB in the beginning and 939.8 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 52.40 ms. Allocated memory is still 1.0 GB. Free memory was 939.8 MB in the beginning and 934.4 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 804.33 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 126.4 MB). Free memory was 934.4 MB in the beginning and 1.1 GB in the end (delta: -159.9 MB). Peak memory consumption was 22.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 19392.11 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 65.5 MB). Free memory was 1.1 GB in the beginning and 893.4 MB in the end (delta: 201.0 MB). Peak memory consumption was 266.5 MB. Max. memory is 11.5 GB. * Witness Printer took 79.73 ms. Allocated memory is still 1.2 GB. Free memory is still 893.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 80]: 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 7 procedures, 65 locations, 1 error locations. SAFE Result, 19.3s OverallTime, 12 OverallIterations, 2 TraceHistogramMax, 13.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 690 SDtfs, 255 SDslu, 2796 SDs, 0 SdLazy, 1003 SolverSat, 42 SolverUnsat, 4 SolverUnknown, 0 SolverNotchecked, 8.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 605 GetRequests, 498 SyntacticMatches, 1 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 7.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=67occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 12 MinimizatonAttempts, 8 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 4.7s InterpolantComputationTime, 569 NumberOfCodeBlocks, 569 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 557 ConstructedInterpolants, 86 QuantifiedInterpolants, 119134 SizeOfPredicates, 49 NumberOfNonLiveVariables, 1232 ConjunctsInSsa, 86 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 PerfectInterpolantSequences, 126/126 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...