/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/Ultimate.py --spec ../../../trunk/examples/svcomp/ReachSafety.prp --file ../../../trunk/examples/svcomp/float-newlib/double_req_bl_1231b_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_1231b_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 3a57138b2f10668d31b1e3de2f5b5c701f65e7c4 --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_1231b_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 3a57138b2f10668d31b1e3de2f5b5c701f65e7c4 --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 18:12:42,335 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-21 18:12:42,337 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-21 18:12:42,350 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-21 18:12:42,351 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-21 18:12:42,352 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-21 18:12:42,354 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-21 18:12:42,356 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-21 18:12:42,358 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-21 18:12:42,359 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-21 18:12:42,360 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-21 18:12:42,360 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-21 18:12:42,361 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-21 18:12:42,362 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-21 18:12:42,364 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-21 18:12:42,365 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-21 18:12:42,366 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-21 18:12:42,368 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-21 18:12:42,370 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-21 18:12:42,372 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-21 18:12:42,373 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-21 18:12:42,375 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-21 18:12:42,378 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-21 18:12:42,378 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-21 18:12:42,378 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-21 18:12:42,380 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-21 18:12:42,381 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-21 18:12:42,382 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-21 18:12:42,383 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-21 18:12:42,385 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-21 18:12:42,385 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-21 18:12:42,386 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-21 18:12:42,387 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-21 18:12:42,387 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-21 18:12:42,388 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-21 18:12:42,389 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-21 18:12:42,390 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-09-21 18:12:42,406 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-21 18:12:42,407 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-21 18:12:42,407 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-21 18:12:42,408 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-09-21 18:12:42,408 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-09-21 18:12:42,409 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-09-21 18:12:42,409 INFO L133 SettingsManager]: * Use SBE=true [2018-09-21 18:12:42,409 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-21 18:12:42,410 INFO L133 SettingsManager]: * sizeof long=4 [2018-09-21 18:12:42,410 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-21 18:12:42,410 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-09-21 18:12:42,410 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-21 18:12:42,410 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-21 18:12:42,410 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-21 18:12:42,411 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-21 18:12:42,411 INFO L133 SettingsManager]: * sizeof long double=12 [2018-09-21 18:12:42,411 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-21 18:12:42,411 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-21 18:12:42,413 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-21 18:12:42,413 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-21 18:12:42,413 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-21 18:12:42,413 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-21 18:12:42,413 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-21 18:12:42,414 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-21 18:12:42,414 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-21 18:12:42,414 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-21 18:12:42,414 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-09-21 18:12:42,415 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-21 18:12:42,415 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-21 18:12:42,416 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 -> 3a57138b2f10668d31b1e3de2f5b5c701f65e7c4 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 18:12:42,468 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-21 18:12:42,482 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-21 18:12:42,486 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-21 18:12:42,488 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-21 18:12:42,488 INFO L276 PluginConnector]: CDTParser initialized [2018-09-21 18:12:42,489 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1231b_true-unreach-call.c [2018-09-21 18:12:42,837 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fa24130d3/1441461479eb4fd9bdac89e1869e4ae3/FLAG509063467 [2018-09-21 18:12:43,061 INFO L277 CDTParser]: Found 1 translation units. [2018-09-21 18:12:43,067 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1231b_true-unreach-call.c [2018-09-21 18:12:43,076 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fa24130d3/1441461479eb4fd9bdac89e1869e4ae3/FLAG509063467 [2018-09-21 18:12:43,099 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fa24130d3/1441461479eb4fd9bdac89e1869e4ae3 [2018-09-21 18:12:43,104 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-21 18:12:43,110 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-21 18:12:43,111 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-21 18:12:43,111 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-21 18:12:43,120 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-21 18:12:43,121 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 06:12:43" (1/1) ... [2018-09-21 18:12:43,125 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1447a47f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:12:43, skipping insertion in model container [2018-09-21 18:12:43,127 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 06:12:43" (1/1) ... [2018-09-21 18:12:43,141 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-21 18:12:43,408 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-21 18:12:43,425 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-21 18:12:43,448 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-21 18:12:43,477 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:12:43 WrapperNode [2018-09-21 18:12:43,478 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-21 18:12:43,478 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-21 18:12:43,479 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-21 18:12:43,479 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-21 18:12:43,495 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:12:43" (1/1) ... [2018-09-21 18:12:43,495 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:12:43" (1/1) ... [2018-09-21 18:12:43,508 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:12:43" (1/1) ... [2018-09-21 18:12:43,508 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:12:43" (1/1) ... [2018-09-21 18:12:43,514 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:12:43" (1/1) ... [2018-09-21 18:12:43,520 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:12:43" (1/1) ... [2018-09-21 18:12:43,522 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:12:43" (1/1) ... [2018-09-21 18:12:43,527 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-21 18:12:43,531 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-21 18:12:43,531 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-21 18:12:43,531 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-21 18:12:43,535 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:12:43" (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 18:12:43,607 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-21 18:12:43,607 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-21 18:12:43,608 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2018-09-21 18:12:43,608 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_double [2018-09-21 18:12:43,608 INFO L138 BoogieDeclarations]: Found implementation of procedure fmin_double [2018-09-21 18:12:43,608 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-21 18:12:43,608 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-09-21 18:12:43,608 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2018-09-21 18:12:43,609 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2018-09-21 18:12:43,609 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_double [2018-09-21 18:12:43,609 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-09-21 18:12:43,609 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2018-09-21 18:12:43,609 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-09-21 18:12:43,609 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-09-21 18:12:43,609 INFO L130 BoogieDeclarations]: Found specification of procedure fmin_double [2018-09-21 18:12:43,610 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-21 18:12:43,610 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-21 18:12:43,610 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-21 18:12:43,610 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real [2018-09-21 18:12:43,610 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2018-09-21 18:12:43,610 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2018-09-21 18:12:43,610 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-09-21 18:12:44,173 INFO L373 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-21 18:12:44,174 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 06:12:44 BoogieIcfgContainer [2018-09-21 18:12:44,174 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-21 18:12:44,175 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-21 18:12:44,175 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-21 18:12:44,178 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-21 18:12:44,179 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 06:12:43" (1/3) ... [2018-09-21 18:12:44,179 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44f89042 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 06:12:44, skipping insertion in model container [2018-09-21 18:12:44,180 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:12:43" (2/3) ... [2018-09-21 18:12:44,180 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44f89042 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 06:12:44, skipping insertion in model container [2018-09-21 18:12:44,180 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 06:12:44" (3/3) ... [2018-09-21 18:12:44,182 INFO L112 eAbstractionObserver]: Analyzing ICFG double_req_bl_1231b_true-unreach-call.c [2018-09-21 18:12:44,193 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-21 18:12:44,202 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-21 18:12:44,248 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-21 18:12:44,249 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-21 18:12:44,249 INFO L382 AbstractCegarLoop]: Hoare is false [2018-09-21 18:12:44,249 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-21 18:12:44,249 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-21 18:12:44,249 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-21 18:12:44,249 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-21 18:12:44,250 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-21 18:12:44,250 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-21 18:12:44,266 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states. [2018-09-21 18:12:44,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-09-21 18:12:44,279 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:12:44,280 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] [2018-09-21 18:12:44,283 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:12:44,288 INFO L82 PathProgramCache]: Analyzing trace with hash -770504903, now seen corresponding path program 1 times [2018-09-21 18:12:44,291 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-21 18:12:44,291 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-21 18:12:44,344 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-21 18:12:44,344 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:12:44,344 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-21 18:12:44,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:12:44,454 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 18:12:44,456 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:12:44,457 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-09-21 18:12:44,461 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-09-21 18:12:44,478 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-09-21 18:12:44,479 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-09-21 18:12:44,482 INFO L87 Difference]: Start difference. First operand 54 states. Second operand 2 states. [2018-09-21 18:12:44,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:12:44,509 INFO L93 Difference]: Finished difference Result 54 states and 62 transitions. [2018-09-21 18:12:44,509 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-09-21 18:12:44,511 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 27 [2018-09-21 18:12:44,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:12:44,522 INFO L225 Difference]: With dead ends: 54 [2018-09-21 18:12:44,523 INFO L226 Difference]: Without dead ends: 49 [2018-09-21 18:12:44,525 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 18:12:44,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2018-09-21 18:12:44,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2018-09-21 18:12:44,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2018-09-21 18:12:44,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 56 transitions. [2018-09-21 18:12:44,577 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 56 transitions. Word has length 27 [2018-09-21 18:12:44,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:12:44,578 INFO L480 AbstractCegarLoop]: Abstraction has 49 states and 56 transitions. [2018-09-21 18:12:44,578 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-09-21 18:12:44,578 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 56 transitions. [2018-09-21 18:12:44,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-09-21 18:12:44,581 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:12:44,581 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-21 18:12:44,582 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:12:44,582 INFO L82 PathProgramCache]: Analyzing trace with hash 1107593466, now seen corresponding path program 1 times [2018-09-21 18:12:44,582 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-21 18:12:44,583 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-21 18:12:44,584 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-21 18:12:44,584 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:12:44,584 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-21 18:12:44,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:12:44,743 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 18:12:44,744 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:12:44,744 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-21 18:12:44,746 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-21 18:12:44,746 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-21 18:12:44,746 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-21 18:12:44,747 INFO L87 Difference]: Start difference. First operand 49 states and 56 transitions. Second operand 4 states. [2018-09-21 18:12:44,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:12:44,848 INFO L93 Difference]: Finished difference Result 53 states and 61 transitions. [2018-09-21 18:12:44,848 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-21 18:12:44,849 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 40 [2018-09-21 18:12:44,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:12:44,852 INFO L225 Difference]: With dead ends: 53 [2018-09-21 18:12:44,853 INFO L226 Difference]: Without dead ends: 53 [2018-09-21 18:12:44,854 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 18:12:44,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2018-09-21 18:12:44,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2018-09-21 18:12:44,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2018-09-21 18:12:44,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 61 transitions. [2018-09-21 18:12:44,869 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 61 transitions. Word has length 40 [2018-09-21 18:12:44,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:12:44,870 INFO L480 AbstractCegarLoop]: Abstraction has 53 states and 61 transitions. [2018-09-21 18:12:44,870 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-21 18:12:44,870 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 61 transitions. [2018-09-21 18:12:44,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2018-09-21 18:12:44,873 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:12:44,873 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-21 18:12:44,873 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:12:44,874 INFO L82 PathProgramCache]: Analyzing trace with hash 1793310220, now seen corresponding path program 1 times [2018-09-21 18:12:44,874 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-21 18:12:44,874 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-21 18:12:44,876 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-21 18:12:44,877 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:12:44,877 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-21 18:12:44,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:12:45,083 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 18:12:45,083 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:12:45,083 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-21 18:12:45,086 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-21 18:12:45,086 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-21 18:12:45,086 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-21 18:12:45,088 INFO L87 Difference]: Start difference. First operand 53 states and 61 transitions. Second operand 4 states. [2018-09-21 18:12:45,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:12:45,201 INFO L93 Difference]: Finished difference Result 57 states and 66 transitions. [2018-09-21 18:12:45,202 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-21 18:12:45,202 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 43 [2018-09-21 18:12:45,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:12:45,204 INFO L225 Difference]: With dead ends: 57 [2018-09-21 18:12:45,204 INFO L226 Difference]: Without dead ends: 57 [2018-09-21 18:12:45,205 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 18:12:45,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2018-09-21 18:12:45,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 53. [2018-09-21 18:12:45,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2018-09-21 18:12:45,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 61 transitions. [2018-09-21 18:12:45,215 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 61 transitions. Word has length 43 [2018-09-21 18:12:45,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:12:45,215 INFO L480 AbstractCegarLoop]: Abstraction has 53 states and 61 transitions. [2018-09-21 18:12:45,216 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-21 18:12:45,216 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 61 transitions. [2018-09-21 18:12:45,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2018-09-21 18:12:45,218 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:12:45,218 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-21 18:12:45,219 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:12:45,219 INFO L82 PathProgramCache]: Analyzing trace with hash 1596796715, now seen corresponding path program 1 times [2018-09-21 18:12:45,219 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-21 18:12:45,219 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-21 18:12:45,220 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-21 18:12:45,220 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:12:45,221 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-21 18:12:45,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-09-21 18:12:45,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-09-21 18:12:45,322 INFO L443 BasicCegarLoop]: Counterexample might be feasible [2018-09-21 18:12:45,369 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.09 06:12:45 BoogieIcfgContainer [2018-09-21 18:12:45,370 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-21 18:12:45,371 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-09-21 18:12:45,371 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-09-21 18:12:45,372 INFO L276 PluginConnector]: Witness Printer initialized [2018-09-21 18:12:45,373 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 06:12:44" (3/4) ... [2018-09-21 18:12:45,378 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-09-21 18:12:45,380 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-09-21 18:12:45,382 INFO L168 Benchmark]: Toolchain (without parser) took 2277.28 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 137.4 MB). Free memory was 954.5 MB in the beginning and 1.1 GB in the end (delta: -110.4 MB). Peak memory consumption was 26.9 MB. Max. memory is 11.5 GB. [2018-09-21 18:12:45,385 INFO L168 Benchmark]: CDTParser took 0.18 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 18:12:45,387 INFO L168 Benchmark]: CACSL2BoogieTranslator took 366.84 ms. Allocated memory is still 1.0 GB. Free memory was 954.5 MB in the beginning and 943.8 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-09-21 18:12:45,389 INFO L168 Benchmark]: Boogie Preprocessor took 51.89 ms. Allocated memory is still 1.0 GB. Free memory is still 943.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-09-21 18:12:45,391 INFO L168 Benchmark]: RCFGBuilder took 642.94 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 137.4 MB). Free memory was 943.8 MB in the beginning and 1.1 GB in the end (delta: -168.7 MB). Peak memory consumption was 28.6 MB. Max. memory is 11.5 GB. [2018-09-21 18:12:45,393 INFO L168 Benchmark]: TraceAbstraction took 1195.55 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: 47.5 MB). Peak memory consumption was 47.5 MB. Max. memory is 11.5 GB. [2018-09-21 18:12:45,394 INFO L168 Benchmark]: Witness Printer took 9.73 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 18:12:45,400 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 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 366.84 ms. Allocated memory is still 1.0 GB. Free memory was 954.5 MB in the beginning and 943.8 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 51.89 ms. Allocated memory is still 1.0 GB. Free memory is still 943.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 642.94 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 137.4 MB). Free memory was 943.8 MB in the beginning and 1.1 GB in the end (delta: -168.7 MB). Peak memory consumption was 28.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1195.55 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: 47.5 MB). Peak memory consumption was 47.5 MB. Max. memory is 11.5 GB. * Witness Printer took 9.73 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: 68]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 67, overapproximation of someBinaryArithmeticDOUBLEoperation at line 61. Possible FailurePath: [L60] double x = __VERIFIER_nondet_double(); [L61] double y = 0.0 / 0.0; VAL [x=4294967302] [L62] CALL, EXPR isnan_double(x) VAL [\old(x)=4294967302] [L16] RET return x != x; VAL [\old(x)=4294967302, \result=0, x=4294967302] [L62] EXPR isnan_double(x) VAL [isnan_double(x)=0, x=4294967302] [L62] COND TRUE !isnan_double(x) [L64] CALL, EXPR fmin_double(x, y) VAL [\old(x)=4294967302, \old(y)=4294967300] [L45] CALL, EXPR __fpclassify_double(x) VAL [\old(x)=4294967302] [L18] __uint32_t msw, lsw; VAL [\old(x)=4294967302, x=4294967302] [L21] FCALL ieee_double_shape_type ew_u; VAL [\old(x)=4294967302, ew_u={4294967299:0}, x=4294967302] [L22] FCALL ew_u.value = (x) VAL [\old(x)=4294967302, ew_u={4294967299:0}, x=4294967302] [L23] EXPR, FCALL ew_u.parts.msw VAL [\old(x)=4294967302, ew_u={4294967299:0}, ew_u.parts.msw=4293918721, x=4294967302] [L23] (msw) = ew_u.parts.msw VAL [\old(x)=4294967302, ew_u={4294967299:0}, ew_u.parts.msw=4293918721, msw=4293918721, x=4294967302] [L23] FCALL (msw) = ew_u.parts.msw VAL [(msw) = ew_u.parts.msw=4294967301, \old(x)=4294967302, ew_u={4294967299:0}, ew_u.parts.msw=4293918721, msw=4293918721, x=4294967302] [L24] EXPR, FCALL ew_u.parts.lsw VAL [\old(x)=4294967302, ew_u={4294967299:0}, ew_u.parts.lsw=4294967297, msw=4293918721, x=4294967302] [L24] (lsw) = ew_u.parts.lsw VAL [\old(x)=4294967302, ew_u={4294967299:0}, ew_u.parts.lsw=4294967297, lsw=4294967297, msw=4293918721, x=4294967302] [L24] FCALL (lsw) = ew_u.parts.lsw VAL [(lsw) = ew_u.parts.lsw=4294967304, \old(x)=4294967302, ew_u={4294967299:0}, ew_u.parts.lsw=4294967297, lsw=4294967297, msw=4293918721, x=4294967302] [L25] COND FALSE !(0) VAL [\old(x)=4294967302, lsw=4294967297, msw=4293918721, x=4294967302] [L27-L28] COND FALSE !((msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000)) VAL [\old(x)=4294967302, lsw=4294967297, msw=4293918721, x=4294967302] [L30-L31] COND FALSE !((msw >= 0x00100000 && msw <= 0x7fefffff) || (msw >= 0x80100000 && msw <= 0xffefffff)) VAL [\old(x)=4294967302, lsw=4294967297, msw=4293918721, x=4294967302] [L33-L34] COND FALSE !((msw >= 0x00000000 && msw <= 0x000fffff) || (msw >= 0x80000000 && msw <= 0x800fffff)) VAL [\old(x)=4294967302, lsw=4294967297, msw=4293918721, x=4294967302] [L37-L38] COND FALSE !((msw == 0x7ff00000 && lsw == 0x00000000) || (msw == 0xfff00000 && lsw == 0x00000000)) [L41] RET return 0; VAL [\old(x)=4294967302, \result=0, lsw=4294967297, msw=4293918721, x=4294967302] [L45] EXPR __fpclassify_double(x) VAL [\old(x)=4294967302, \old(y)=4294967300, __fpclassify_double(x)=0, x=4294967302, y=4294967300] [L45] COND TRUE __fpclassify_double(x) == 0 [L46] RET return y; VAL [\old(x)=4294967302, \old(y)=4294967300, \result=4294967300, x=4294967302, y=4294967300] [L64] EXPR fmin_double(x, y) VAL [fmin_double(x, y)=4294967300, x=4294967302, y=4294967300] [L64] double res = fmin_double(x, y); [L67] COND TRUE res != x VAL [res=4294967300, x=4294967302, y=4294967300] [L68] __VERIFIER_error() VAL [res=4294967300, x=4294967302, y=4294967300] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 54 locations, 1 error locations. UNSAFE Result, 1.1s OverallTime, 4 OverallIterations, 1 TraceHistogramMax, 0.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 175 SDtfs, 0 SDslu, 210 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=54occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 4 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 153 NumberOfCodeBlocks, 153 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 107 ConstructedInterpolants, 0 QuantifiedInterpolants, 4609 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 18:12:47,902 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-21 18:12:47,904 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-21 18:12:47,917 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-21 18:12:47,917 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-21 18:12:47,918 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-21 18:12:47,920 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-21 18:12:47,921 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-21 18:12:47,923 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-21 18:12:47,924 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-21 18:12:47,925 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-21 18:12:47,925 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-21 18:12:47,926 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-21 18:12:47,927 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-21 18:12:47,928 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-21 18:12:47,929 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-21 18:12:47,930 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-21 18:12:47,932 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-21 18:12:47,934 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-21 18:12:47,936 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-21 18:12:47,937 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-21 18:12:47,938 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-21 18:12:47,941 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-21 18:12:47,941 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-21 18:12:47,941 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-21 18:12:47,942 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-21 18:12:47,943 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-21 18:12:47,944 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-21 18:12:47,945 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-21 18:12:47,946 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-21 18:12:47,947 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-21 18:12:47,948 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-21 18:12:47,948 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-21 18:12:47,948 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-21 18:12:47,949 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-21 18:12:47,950 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-21 18:12:47,950 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2018-09-21 18:12:47,977 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-21 18:12:47,978 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-21 18:12:47,979 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-21 18:12:47,979 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-09-21 18:12:47,980 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-09-21 18:12:47,980 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-09-21 18:12:47,980 INFO L133 SettingsManager]: * Use SBE=true [2018-09-21 18:12:47,981 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-21 18:12:47,982 INFO L133 SettingsManager]: * sizeof long=4 [2018-09-21 18:12:47,982 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-09-21 18:12:47,982 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-21 18:12:47,982 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-21 18:12:47,982 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-21 18:12:47,983 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-21 18:12:47,983 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-09-21 18:12:47,983 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-09-21 18:12:47,983 INFO L133 SettingsManager]: * sizeof long double=12 [2018-09-21 18:12:47,983 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-21 18:12:47,983 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-21 18:12:47,984 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-21 18:12:47,984 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-21 18:12:47,984 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-21 18:12:47,984 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-21 18:12:47,984 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-21 18:12:47,984 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-21 18:12:47,985 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-21 18:12:47,985 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-21 18:12:47,985 INFO L133 SettingsManager]: * Trace refinement strategy=WOLF [2018-09-21 18:12:47,985 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-21 18:12:47,988 INFO L133 SettingsManager]: * Command for external solver=cvc4nyu --tear-down-incremental --rewrite-divk --print-success --lang smt [2018-09-21 18:12:47,988 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-09-21 18:12:47,988 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 -> 3a57138b2f10668d31b1e3de2f5b5c701f65e7c4 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false [2018-09-21 18:12:48,060 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-21 18:12:48,076 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-21 18:12:48,081 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-21 18:12:48,082 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-21 18:12:48,083 INFO L276 PluginConnector]: CDTParser initialized [2018-09-21 18:12:48,084 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1231b_true-unreach-call.c [2018-09-21 18:12:48,462 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ca79f430f/fef3abec4e734371b72efe5db0308fa1/FLAG90692464e [2018-09-21 18:12:48,665 INFO L277 CDTParser]: Found 1 translation units. [2018-09-21 18:12:48,666 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1231b_true-unreach-call.c [2018-09-21 18:12:48,679 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ca79f430f/fef3abec4e734371b72efe5db0308fa1/FLAG90692464e [2018-09-21 18:12:48,701 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ca79f430f/fef3abec4e734371b72efe5db0308fa1 [2018-09-21 18:12:48,706 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-21 18:12:48,711 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-21 18:12:48,712 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-21 18:12:48,714 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-21 18:12:48,722 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-21 18:12:48,723 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 06:12:48" (1/1) ... [2018-09-21 18:12:48,728 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d04afd9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:12:48, skipping insertion in model container [2018-09-21 18:12:48,729 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 06:12:48" (1/1) ... [2018-09-21 18:12:48,742 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-21 18:12:48,997 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-21 18:12:49,018 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-21 18:12:49,036 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-21 18:12:49,074 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:12:49 WrapperNode [2018-09-21 18:12:49,074 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-21 18:12:49,075 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-21 18:12:49,075 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-21 18:12:49,075 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-21 18:12:49,092 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:12:49" (1/1) ... [2018-09-21 18:12:49,092 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:12:49" (1/1) ... [2018-09-21 18:12:49,106 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:12:49" (1/1) ... [2018-09-21 18:12:49,107 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:12:49" (1/1) ... [2018-09-21 18:12:49,115 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:12:49" (1/1) ... [2018-09-21 18:12:49,121 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:12:49" (1/1) ... [2018-09-21 18:12:49,123 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:12:49" (1/1) ... [2018-09-21 18:12:49,127 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-21 18:12:49,128 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-21 18:12:49,128 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-21 18:12:49,128 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-21 18:12:49,129 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:12:49" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-21 18:12:49,316 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-21 18:12:49,317 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-21 18:12:49,317 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2018-09-21 18:12:49,317 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_double [2018-09-21 18:12:49,317 INFO L138 BoogieDeclarations]: Found implementation of procedure fmin_double [2018-09-21 18:12:49,317 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-21 18:12:49,319 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-09-21 18:12:49,319 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2018-09-21 18:12:49,319 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2018-09-21 18:12:49,320 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_double [2018-09-21 18:12:49,320 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-09-21 18:12:49,320 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2018-09-21 18:12:49,321 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2018-09-21 18:12:49,321 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-09-21 18:12:49,321 INFO L130 BoogieDeclarations]: Found specification of procedure fmin_double [2018-09-21 18:12:49,321 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-21 18:12:49,321 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-21 18:12:49,321 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-21 18:12:49,321 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intFLOATTYPE8 [2018-09-21 18:12:49,322 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2018-09-21 18:12:49,322 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2018-09-21 18:12:49,322 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2018-09-21 18:12:49,712 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-21 18:12:49,736 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-21 18:12:49,755 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-21 18:12:49,921 INFO L373 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-21 18:12:49,921 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 06:12:49 BoogieIcfgContainer [2018-09-21 18:12:49,921 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-21 18:12:49,923 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-21 18:12:49,923 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-21 18:12:49,927 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-21 18:12:49,927 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 06:12:48" (1/3) ... [2018-09-21 18:12:49,928 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d194509 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 06:12:49, skipping insertion in model container [2018-09-21 18:12:49,928 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:12:49" (2/3) ... [2018-09-21 18:12:49,929 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d194509 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 06:12:49, skipping insertion in model container [2018-09-21 18:12:49,929 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 06:12:49" (3/3) ... [2018-09-21 18:12:49,931 INFO L112 eAbstractionObserver]: Analyzing ICFG double_req_bl_1231b_true-unreach-call.c [2018-09-21 18:12:49,942 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-21 18:12:49,951 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-21 18:12:50,001 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-21 18:12:50,002 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-21 18:12:50,003 INFO L382 AbstractCegarLoop]: Hoare is false [2018-09-21 18:12:50,003 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-21 18:12:50,003 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-21 18:12:50,003 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-21 18:12:50,004 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-21 18:12:50,004 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-21 18:12:50,004 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-21 18:12:50,023 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states. [2018-09-21 18:12:50,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-09-21 18:12:50,037 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:12:50,038 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] [2018-09-21 18:12:50,041 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:12:50,047 INFO L82 PathProgramCache]: Analyzing trace with hash -883733309, now seen corresponding path program 1 times [2018-09-21 18:12:50,052 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-21 18:12:50,053 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2018-09-21 18:12:50,066 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2018-09-21 18:12:50,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:12:50,188 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-21 18:12:50,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-21 18:12:50,223 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-21 18:12:50,250 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:12:50,250 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-09-21 18:12:50,255 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-09-21 18:12:50,275 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-09-21 18:12:50,276 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-09-21 18:12:50,278 INFO L87 Difference]: Start difference. First operand 51 states. Second operand 2 states. [2018-09-21 18:12:50,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:12:50,310 INFO L93 Difference]: Finished difference Result 51 states and 59 transitions. [2018-09-21 18:12:50,310 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-09-21 18:12:50,312 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 25 [2018-09-21 18:12:50,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:12:50,324 INFO L225 Difference]: With dead ends: 51 [2018-09-21 18:12:50,324 INFO L226 Difference]: Without dead ends: 46 [2018-09-21 18:12:50,326 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-09-21 18:12:50,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2018-09-21 18:12:50,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2018-09-21 18:12:50,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2018-09-21 18:12:50,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 53 transitions. [2018-09-21 18:12:50,373 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 53 transitions. Word has length 25 [2018-09-21 18:12:50,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:12:50,373 INFO L480 AbstractCegarLoop]: Abstraction has 46 states and 53 transitions. [2018-09-21 18:12:50,373 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-09-21 18:12:50,374 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 53 transitions. [2018-09-21 18:12:50,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-09-21 18:12:50,376 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:12:50,376 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 18:12:50,377 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:12:50,377 INFO L82 PathProgramCache]: Analyzing trace with hash -2016097883, now seen corresponding path program 1 times [2018-09-21 18:12:50,378 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-21 18:12:50,378 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 18:12:50,387 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:12:50,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:12:50,483 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-21 18:12:50,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-21 18:12:50,607 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-21 18:12:50,625 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:12:50,625 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-21 18:12:50,627 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-21 18:12:50,629 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-21 18:12:50,630 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-21 18:12:50,630 INFO L87 Difference]: Start difference. First operand 46 states and 53 transitions. Second operand 4 states. [2018-09-21 18:12:50,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:12:50,720 INFO L93 Difference]: Finished difference Result 49 states and 57 transitions. [2018-09-21 18:12:50,722 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-21 18:12:50,722 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 38 [2018-09-21 18:12:50,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:12:50,725 INFO L225 Difference]: With dead ends: 49 [2018-09-21 18:12:50,726 INFO L226 Difference]: Without dead ends: 49 [2018-09-21 18:12:50,726 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-21 18:12:50,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2018-09-21 18:12:50,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2018-09-21 18:12:50,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2018-09-21 18:12:50,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 57 transitions. [2018-09-21 18:12:50,737 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 57 transitions. Word has length 38 [2018-09-21 18:12:50,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:12:50,738 INFO L480 AbstractCegarLoop]: Abstraction has 49 states and 57 transitions. [2018-09-21 18:12:50,738 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-21 18:12:50,738 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 57 transitions. [2018-09-21 18:12:50,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2018-09-21 18:12:50,739 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:12:50,740 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-21 18:12:50,740 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:12:50,740 INFO L82 PathProgramCache]: Analyzing trace with hash -1374149908, now seen corresponding path program 1 times [2018-09-21 18:12:50,741 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-21 18:12:50,741 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 18:12:50,753 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:12:50,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:12:50,848 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-21 18:12:50,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-21 18:12:50,985 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-21 18:12:51,003 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:12:51,003 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-21 18:12:51,004 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-21 18:12:51,004 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-21 18:12:51,005 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-21 18:12:51,005 INFO L87 Difference]: Start difference. First operand 49 states and 57 transitions. Second operand 4 states. [2018-09-21 18:12:51,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:12:51,082 INFO L93 Difference]: Finished difference Result 52 states and 61 transitions. [2018-09-21 18:12:51,084 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-21 18:12:51,084 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 39 [2018-09-21 18:12:51,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:12:51,086 INFO L225 Difference]: With dead ends: 52 [2018-09-21 18:12:51,086 INFO L226 Difference]: Without dead ends: 52 [2018-09-21 18:12:51,087 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-21 18:12:51,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2018-09-21 18:12:51,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 49. [2018-09-21 18:12:51,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2018-09-21 18:12:51,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 57 transitions. [2018-09-21 18:12:51,097 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 57 transitions. Word has length 39 [2018-09-21 18:12:51,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:12:51,098 INFO L480 AbstractCegarLoop]: Abstraction has 49 states and 57 transitions. [2018-09-21 18:12:51,098 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-21 18:12:51,099 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 57 transitions. [2018-09-21 18:12:51,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-09-21 18:12:51,101 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:12:51,101 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-21 18:12:51,101 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:12:51,102 INFO L82 PathProgramCache]: Analyzing trace with hash -1588482423, now seen corresponding path program 1 times [2018-09-21 18:12:51,102 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-21 18:12:51,103 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 18:12:51,120 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 18:12:51,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:12:51,217 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-21 18:12:51,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-21 18:12:51,324 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-21 18:12:51,342 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:12:51,343 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-21 18:12:51,343 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-21 18:12:51,345 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-21 18:12:51,345 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-21 18:12:51,345 INFO L87 Difference]: Start difference. First operand 49 states and 57 transitions. Second operand 4 states. [2018-09-21 18:12:51,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:12:51,512 INFO L93 Difference]: Finished difference Result 52 states and 61 transitions. [2018-09-21 18:12:51,513 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-21 18:12:51,514 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 40 [2018-09-21 18:12:51,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:12:51,516 INFO L225 Difference]: With dead ends: 52 [2018-09-21 18:12:51,516 INFO L226 Difference]: Without dead ends: 52 [2018-09-21 18:12:51,517 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-21 18:12:51,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2018-09-21 18:12:51,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 49. [2018-09-21 18:12:51,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2018-09-21 18:12:51,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 57 transitions. [2018-09-21 18:12:51,526 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 57 transitions. Word has length 40 [2018-09-21 18:12:51,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:12:51,527 INFO L480 AbstractCegarLoop]: Abstraction has 49 states and 57 transitions. [2018-09-21 18:12:51,527 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-21 18:12:51,527 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 57 transitions. [2018-09-21 18:12:51,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2018-09-21 18:12:51,529 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:12:51,529 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-21 18:12:51,530 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:12:51,531 INFO L82 PathProgramCache]: Analyzing trace with hash 1717260944, now seen corresponding path program 1 times [2018-09-21 18:12:51,531 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-21 18:12:51,532 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2018-09-21 18:12:51,546 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:12:51,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:12:51,645 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-21 18:12:51,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-21 18:12:51,699 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-21 18:12:51,716 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:12:51,716 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-21 18:12:51,717 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-21 18:12:51,717 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-21 18:12:51,717 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-21 18:12:51,718 INFO L87 Difference]: Start difference. First operand 49 states and 57 transitions. Second operand 4 states. [2018-09-21 18:12:51,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:12:51,773 INFO L93 Difference]: Finished difference Result 52 states and 61 transitions. [2018-09-21 18:12:51,775 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-21 18:12:51,775 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 41 [2018-09-21 18:12:51,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:12:51,777 INFO L225 Difference]: With dead ends: 52 [2018-09-21 18:12:51,778 INFO L226 Difference]: Without dead ends: 52 [2018-09-21 18:12:51,778 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-21 18:12:51,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2018-09-21 18:12:51,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 49. [2018-09-21 18:12:51,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2018-09-21 18:12:51,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 57 transitions. [2018-09-21 18:12:51,786 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 57 transitions. Word has length 41 [2018-09-21 18:12:51,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:12:51,787 INFO L480 AbstractCegarLoop]: Abstraction has 49 states and 57 transitions. [2018-09-21 18:12:51,787 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-21 18:12:51,788 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 57 transitions. [2018-09-21 18:12:51,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2018-09-21 18:12:51,789 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:12:51,790 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-21 18:12:51,790 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:12:51,790 INFO L82 PathProgramCache]: Analyzing trace with hash -90193519, now seen corresponding path program 1 times [2018-09-21 18:12:51,791 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-21 18:12:51,791 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2018-09-21 18:12:51,796 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:12:51,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:12:51,885 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-21 18:12:52,149 INFO L682 Elim1Store]: detected equality via solver [2018-09-21 18:12:52,150 INFO L682 Elim1Store]: detected equality via solver [2018-09-21 18:12:52,156 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 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 27 treesize of output 35 [2018-09-21 18:12:52,166 INFO L700 Elim1Store]: detected not equals via solver [2018-09-21 18:12:52,185 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 25 [2018-09-21 18:12:52,187 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-21 18:12:52,206 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:12:52,290 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 18:12:52,291 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:36, output treesize:28 [2018-09-21 18:12:52,918 INFO L682 Elim1Store]: detected equality via solver [2018-09-21 18:12:52,919 INFO L682 Elim1Store]: detected equality via solver [2018-09-21 18:12:52,923 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 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 54 treesize of output 56 [2018-09-21 18:12:52,940 INFO L700 Elim1Store]: detected not equals via solver [2018-09-21 18:12:52,957 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 52 [2018-09-21 18:12:52,959 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-21 18:12:53,053 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:12:53,131 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2018-09-21 18:12:53,132 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:63, output treesize:55 [2018-09-21 18:12:53,231 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 35 treesize of output 27 [2018-09-21 18:12:53,238 INFO L700 Elim1Store]: detected not equals via solver [2018-09-21 18:12:53,242 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2018-09-21 18:12:53,243 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-21 18:12:53,255 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:12:53,271 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 18:12:53,271 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:44, output treesize:18 [2018-09-21 18:12:53,787 WARN L178 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 31 [2018-09-21 18:12:54,078 WARN L178 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 39 [2018-09-21 18:12:54,520 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 18:12:54,521 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-21 18:12:54,535 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:12:54,535 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2018-09-21 18:12:54,536 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-09-21 18:12:54,536 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-09-21 18:12:54,536 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2018-09-21 18:12:54,537 INFO L87 Difference]: Start difference. First operand 49 states and 57 transitions. Second operand 16 states. [2018-09-21 18:12:56,007 WARN L178 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 35 [2018-09-21 18:12:56,647 WARN L178 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 34 [2018-09-21 18:13:00,180 WARN L178 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 42 [2018-09-21 18:13:04,589 WARN L178 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 34 [2018-09-21 18:13:07,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:13:07,290 INFO L93 Difference]: Finished difference Result 59 states and 74 transitions. [2018-09-21 18:13:07,291 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-09-21 18:13:07,292 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 41 [2018-09-21 18:13:07,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:13:07,293 INFO L225 Difference]: With dead ends: 59 [2018-09-21 18:13:07,293 INFO L226 Difference]: Without dead ends: 52 [2018-09-21 18:13:07,294 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=116, Invalid=585, Unknown=1, NotChecked=0, Total=702 [2018-09-21 18:13:07,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2018-09-21 18:13:07,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 48. [2018-09-21 18:13:07,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2018-09-21 18:13:07,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 54 transitions. [2018-09-21 18:13:07,303 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 54 transitions. Word has length 41 [2018-09-21 18:13:07,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:13:07,303 INFO L480 AbstractCegarLoop]: Abstraction has 48 states and 54 transitions. [2018-09-21 18:13:07,303 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-09-21 18:13:07,304 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 54 transitions. [2018-09-21 18:13:07,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2018-09-21 18:13:07,305 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:13:07,305 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] [2018-09-21 18:13:07,306 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:13:07,306 INFO L82 PathProgramCache]: Analyzing trace with hash -429778258, now seen corresponding path program 1 times [2018-09-21 18:13:07,306 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-21 18:13:07,306 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 18:13:07,312 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:13:07,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:13:07,418 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-21 18:13:07,447 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 18:13:07,447 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-21 18:13:07,459 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:13:07,459 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-21 18:13:07,460 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-21 18:13:07,460 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-21 18:13:07,461 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-21 18:13:07,462 INFO L87 Difference]: Start difference. First operand 48 states and 54 transitions. Second operand 4 states. [2018-09-21 18:13:07,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:13:07,488 INFO L93 Difference]: Finished difference Result 51 states and 58 transitions. [2018-09-21 18:13:07,489 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-21 18:13:07,489 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 58 [2018-09-21 18:13:07,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:13:07,490 INFO L225 Difference]: With dead ends: 51 [2018-09-21 18:13:07,490 INFO L226 Difference]: Without dead ends: 51 [2018-09-21 18:13:07,491 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-21 18:13:07,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2018-09-21 18:13:07,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2018-09-21 18:13:07,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2018-09-21 18:13:07,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 58 transitions. [2018-09-21 18:13:07,511 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 58 transitions. Word has length 58 [2018-09-21 18:13:07,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:13:07,516 INFO L480 AbstractCegarLoop]: Abstraction has 51 states and 58 transitions. [2018-09-21 18:13:07,516 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-21 18:13:07,516 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 58 transitions. [2018-09-21 18:13:07,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2018-09-21 18:13:07,517 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:13:07,518 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-21 18:13:07,518 INFO L423 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:13:07,519 INFO L82 PathProgramCache]: Analyzing trace with hash -1152900451, now seen corresponding path program 1 times [2018-09-21 18:13:07,520 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-21 18:13:07,521 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 18:13:07,530 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:13:07,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:13:07,626 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-21 18:13:07,673 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 18:13:07,673 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-21 18:13:07,685 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:13:07,685 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-21 18:13:07,686 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-21 18:13:07,686 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-21 18:13:07,686 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-21 18:13:07,688 INFO L87 Difference]: Start difference. First operand 51 states and 58 transitions. Second operand 4 states. [2018-09-21 18:13:07,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:13:07,711 INFO L93 Difference]: Finished difference Result 54 states and 62 transitions. [2018-09-21 18:13:07,712 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-21 18:13:07,712 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2018-09-21 18:13:07,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:13:07,713 INFO L225 Difference]: With dead ends: 54 [2018-09-21 18:13:07,713 INFO L226 Difference]: Without dead ends: 54 [2018-09-21 18:13:07,714 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-21 18:13:07,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2018-09-21 18:13:07,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 51. [2018-09-21 18:13:07,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2018-09-21 18:13:07,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 58 transitions. [2018-09-21 18:13:07,719 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 58 transitions. Word has length 59 [2018-09-21 18:13:07,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:13:07,720 INFO L480 AbstractCegarLoop]: Abstraction has 51 states and 58 transitions. [2018-09-21 18:13:07,720 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-21 18:13:07,720 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 58 transitions. [2018-09-21 18:13:07,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2018-09-21 18:13:07,721 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:13:07,721 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] [2018-09-21 18:13:07,722 INFO L423 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:13:07,722 INFO L82 PathProgramCache]: Analyzing trace with hash 831452585, now seen corresponding path program 1 times [2018-09-21 18:13:07,722 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-21 18:13:07,722 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 18:13:07,730 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:13:07,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:13:07,831 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-21 18:13:08,002 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 18:13:08,002 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-21 18:13:08,013 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:13:08,013 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-09-21 18:13:08,013 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-21 18:13:08,014 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-21 18:13:08,014 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-09-21 18:13:08,014 INFO L87 Difference]: Start difference. First operand 51 states and 58 transitions. Second operand 5 states. [2018-09-21 18:13:08,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:13:08,748 INFO L93 Difference]: Finished difference Result 54 states and 60 transitions. [2018-09-21 18:13:08,750 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-09-21 18:13:08,750 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 60 [2018-09-21 18:13:08,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:13:08,751 INFO L225 Difference]: With dead ends: 54 [2018-09-21 18:13:08,752 INFO L226 Difference]: Without dead ends: 51 [2018-09-21 18:13:08,752 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-09-21 18:13:08,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2018-09-21 18:13:08,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2018-09-21 18:13:08,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2018-09-21 18:13:08,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 57 transitions. [2018-09-21 18:13:08,760 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 57 transitions. Word has length 60 [2018-09-21 18:13:08,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:13:08,760 INFO L480 AbstractCegarLoop]: Abstraction has 51 states and 57 transitions. [2018-09-21 18:13:08,760 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-21 18:13:08,760 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 57 transitions. [2018-09-21 18:13:08,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2018-09-21 18:13:08,762 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:13:08,762 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] [2018-09-21 18:13:08,762 INFO L423 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:13:08,762 INFO L82 PathProgramCache]: Analyzing trace with hash -1688507349, now seen corresponding path program 1 times [2018-09-21 18:13:08,763 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-21 18:13:08,763 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 18:13:08,772 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:13:08,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:13:08,874 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-21 18:13:08,927 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 18:13:08,934 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 18:13:08,934 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-21 18:13:08,940 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:13:08,954 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 18:13:08,954 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:24, output treesize:20 [2018-09-21 18:13:09,019 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2018-09-21 18:13:09,024 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 4 [2018-09-21 18:13:09,024 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-21 18:13:09,028 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:13:09,038 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-09-21 18:13:09,039 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:29, output treesize:14 [2018-09-21 18:13:09,573 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 18:13:09,573 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-21 18:13:09,590 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:13:09,590 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2018-09-21 18:13:09,590 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-09-21 18:13:09,591 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-09-21 18:13:09,591 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2018-09-21 18:13:09,591 INFO L87 Difference]: Start difference. First operand 51 states and 57 transitions. Second operand 10 states. [2018-09-21 18:13:11,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:13:11,433 INFO L93 Difference]: Finished difference Result 58 states and 64 transitions. [2018-09-21 18:13:11,435 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-09-21 18:13:11,435 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 60 [2018-09-21 18:13:11,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:13:11,437 INFO L225 Difference]: With dead ends: 58 [2018-09-21 18:13:11,437 INFO L226 Difference]: Without dead ends: 53 [2018-09-21 18:13:11,437 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2018-09-21 18:13:11,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2018-09-21 18:13:11,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2018-09-21 18:13:11,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2018-09-21 18:13:11,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 59 transitions. [2018-09-21 18:13:11,444 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 59 transitions. Word has length 60 [2018-09-21 18:13:11,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:13:11,444 INFO L480 AbstractCegarLoop]: Abstraction has 53 states and 59 transitions. [2018-09-21 18:13:11,444 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-09-21 18:13:11,444 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 59 transitions. [2018-09-21 18:13:11,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2018-09-21 18:13:11,446 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:13:11,446 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-21 18:13:11,446 INFO L423 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:13:11,446 INFO L82 PathProgramCache]: Analyzing trace with hash -734735214, now seen corresponding path program 1 times [2018-09-21 18:13:11,447 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-21 18:13:11,447 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 18:13:11,457 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:13:11,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:13:11,542 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-21 18:13:11,565 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 18:13:11,565 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-21 18:13:11,575 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:13:11,576 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-21 18:13:11,576 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-21 18:13:11,576 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-21 18:13:11,576 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-21 18:13:11,577 INFO L87 Difference]: Start difference. First operand 53 states and 59 transitions. Second operand 4 states. [2018-09-21 18:13:11,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:13:11,601 INFO L93 Difference]: Finished difference Result 56 states and 63 transitions. [2018-09-21 18:13:11,601 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-21 18:13:11,602 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 60 [2018-09-21 18:13:11,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:13:11,603 INFO L225 Difference]: With dead ends: 56 [2018-09-21 18:13:11,603 INFO L226 Difference]: Without dead ends: 56 [2018-09-21 18:13:11,603 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-21 18:13:11,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2018-09-21 18:13:11,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 53. [2018-09-21 18:13:11,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2018-09-21 18:13:11,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 59 transitions. [2018-09-21 18:13:11,609 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 59 transitions. Word has length 60 [2018-09-21 18:13:11,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:13:11,609 INFO L480 AbstractCegarLoop]: Abstraction has 53 states and 59 transitions. [2018-09-21 18:13:11,609 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-21 18:13:11,609 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 59 transitions. [2018-09-21 18:13:11,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2018-09-21 18:13:11,610 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:13:11,612 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-21 18:13:11,613 INFO L423 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:13:11,613 INFO L82 PathProgramCache]: Analyzing trace with hash -824232870, now seen corresponding path program 1 times [2018-09-21 18:13:11,613 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-21 18:13:11,613 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 18:13:11,624 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:13:11,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:13:11,731 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-21 18:13:11,782 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 18:13:11,788 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 18:13:11,788 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-21 18:13:11,793 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:13:11,807 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 18:13:11,808 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:24, output treesize:20 [2018-09-21 18:13:11,897 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 18:13:11,902 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 18:13:11,902 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-21 18:13:11,905 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:13:11,913 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-09-21 18:13:11,914 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:29, output treesize:14 [2018-09-21 18:13:12,253 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 18:13:12,254 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-21 18:13:12,264 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:13:12,264 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2018-09-21 18:13:12,264 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-09-21 18:13:12,265 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-09-21 18:13:12,265 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2018-09-21 18:13:12,265 INFO L87 Difference]: Start difference. First operand 53 states and 59 transitions. Second operand 10 states. [2018-09-21 18:13:12,681 WARN L178 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 29 [2018-09-21 18:13:13,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:13:13,900 INFO L93 Difference]: Finished difference Result 60 states and 66 transitions. [2018-09-21 18:13:13,903 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-09-21 18:13:13,903 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 61 [2018-09-21 18:13:13,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:13:13,904 INFO L225 Difference]: With dead ends: 60 [2018-09-21 18:13:13,904 INFO L226 Difference]: Without dead ends: 55 [2018-09-21 18:13:13,904 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2018-09-21 18:13:13,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2018-09-21 18:13:13,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 53. [2018-09-21 18:13:13,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2018-09-21 18:13:13,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 59 transitions. [2018-09-21 18:13:13,915 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 59 transitions. Word has length 61 [2018-09-21 18:13:13,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:13:13,915 INFO L480 AbstractCegarLoop]: Abstraction has 53 states and 59 transitions. [2018-09-21 18:13:13,916 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-09-21 18:13:13,916 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 59 transitions. [2018-09-21 18:13:13,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2018-09-21 18:13:13,920 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:13:13,920 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-21 18:13:13,920 INFO L423 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:13:13,920 INFO L82 PathProgramCache]: Analyzing trace with hash 703601985, now seen corresponding path program 1 times [2018-09-21 18:13:13,921 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-21 18:13:13,921 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 14 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with mathsat -unsat_core_generation=3 [2018-09-21 18:13:13,930 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:13:14,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:13:14,017 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-21 18:13:14,043 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 18:13:14,043 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-21 18:13:14,054 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:13:14,054 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-21 18:13:14,054 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-21 18:13:14,055 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-21 18:13:14,055 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-21 18:13:14,055 INFO L87 Difference]: Start difference. First operand 53 states and 59 transitions. Second operand 4 states. [2018-09-21 18:13:14,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:13:14,084 INFO L93 Difference]: Finished difference Result 54 states and 60 transitions. [2018-09-21 18:13:14,085 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-21 18:13:14,085 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 61 [2018-09-21 18:13:14,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:13:14,086 INFO L225 Difference]: With dead ends: 54 [2018-09-21 18:13:14,086 INFO L226 Difference]: Without dead ends: 54 [2018-09-21 18:13:14,087 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 58 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 18:13:14,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2018-09-21 18:13:14,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 51. [2018-09-21 18:13:14,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2018-09-21 18:13:14,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 56 transitions. [2018-09-21 18:13:14,091 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 56 transitions. Word has length 61 [2018-09-21 18:13:14,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:13:14,092 INFO L480 AbstractCegarLoop]: Abstraction has 51 states and 56 transitions. [2018-09-21 18:13:14,093 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-21 18:13:14,093 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 56 transitions. [2018-09-21 18:13:14,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2018-09-21 18:13:14,095 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:13:14,095 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-21 18:13:14,095 INFO L423 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:13:14,095 INFO L82 PathProgramCache]: Analyzing trace with hash -1103852478, now seen corresponding path program 1 times [2018-09-21 18:13:14,096 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-21 18:13:14,096 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 15 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with mathsat -unsat_core_generation=3 [2018-09-21 18:13:14,102 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:13:14,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:13:14,198 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-21 18:13:14,251 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 11 [2018-09-21 18:13:14,257 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 10 [2018-09-21 18:13:14,257 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-21 18:13:14,264 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:13:14,278 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-09-21 18:13:14,278 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:24, output treesize:20 [2018-09-21 18:13:14,314 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2018-09-21 18:13:14,321 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 4 [2018-09-21 18:13:14,321 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-21 18:13:14,326 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:13:14,333 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-09-21 18:13:14,334 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:29, output treesize:14 [2018-09-21 18:13:14,635 WARN L178 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 29 [2018-09-21 18:13:15,099 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-09-21 18:13:15,099 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-21 18:13:15,625 WARN L178 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2018-09-21 18:13:16,162 WARN L178 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 36 [2018-09-21 18:13:16,465 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-21 18:13:16,465 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-21 18:13:16,474 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:13:16,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:13:16,550 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-21 18:13:17,150 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2018-09-21 18:13:17,150 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-21 18:13:17,418 WARN L178 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2018-09-21 18:13:17,685 WARN L178 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2018-09-21 18:13:18,688 WARN L178 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-09-21 18:13:18,816 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 18:13:18,837 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-21 18:13:18,837 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [12, 10] total 24 [2018-09-21 18:13:18,838 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-09-21 18:13:18,838 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-09-21 18:13:18,839 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=617, Unknown=0, NotChecked=0, Total=702 [2018-09-21 18:13:18,839 INFO L87 Difference]: Start difference. First operand 51 states and 56 transitions. Second operand 24 states. [2018-09-21 18:13:19,783 WARN L178 SmtUtils]: Spent 303.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2018-09-21 18:13:22,476 WARN L178 SmtUtils]: Spent 317.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 32 [2018-09-21 18:13:22,709 WARN L178 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 6 [2018-09-21 18:13:22,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:13:22,847 INFO L93 Difference]: Finished difference Result 69 states and 75 transitions. [2018-09-21 18:13:22,849 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-09-21 18:13:22,850 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 61 [2018-09-21 18:13:22,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:13:22,851 INFO L225 Difference]: With dead ends: 69 [2018-09-21 18:13:22,851 INFO L226 Difference]: Without dead ends: 61 [2018-09-21 18:13:22,852 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 185 SyntacticMatches, 3 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=141, Invalid=1049, Unknown=0, NotChecked=0, Total=1190 [2018-09-21 18:13:22,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2018-09-21 18:13:22,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 50. [2018-09-21 18:13:22,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2018-09-21 18:13:22,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 54 transitions. [2018-09-21 18:13:22,858 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 54 transitions. Word has length 61 [2018-09-21 18:13:22,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:13:22,859 INFO L480 AbstractCegarLoop]: Abstraction has 50 states and 54 transitions. [2018-09-21 18:13:22,859 INFO L481 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-09-21 18:13:22,859 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 54 transitions. [2018-09-21 18:13:22,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2018-09-21 18:13:22,861 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:13:22,862 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-21 18:13:22,862 INFO L423 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:13:22,863 INFO L82 PathProgramCache]: Analyzing trace with hash 1600601359, now seen corresponding path program 1 times [2018-09-21 18:13:22,863 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-21 18:13:22,863 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 17 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with mathsat -unsat_core_generation=3 [2018-09-21 18:13:22,875 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:13:22,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:13:22,969 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-21 18:13:23,016 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 11 [2018-09-21 18:13:23,022 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 10 [2018-09-21 18:13:23,022 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-21 18:13:23,050 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:13:23,074 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-09-21 18:13:23,074 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:24, output treesize:20 [2018-09-21 18:13:23,138 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 18:13:23,150 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 18:13:23,151 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-21 18:13:23,174 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:13:23,247 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 18:13:23,248 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:29, output treesize:14 [2018-09-21 18:13:23,553 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 18:13:23,553 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-21 18:13:23,568 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:13:23,569 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2018-09-21 18:13:23,569 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-09-21 18:13:23,569 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-09-21 18:13:23,570 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2018-09-21 18:13:23,571 INFO L87 Difference]: Start difference. First operand 50 states and 54 transitions. Second operand 10 states. [2018-09-21 18:13:24,126 WARN L178 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2018-09-21 18:13:25,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:13:25,408 INFO L93 Difference]: Finished difference Result 59 states and 63 transitions. [2018-09-21 18:13:25,410 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-09-21 18:13:25,410 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 62 [2018-09-21 18:13:25,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:13:25,411 INFO L225 Difference]: With dead ends: 59 [2018-09-21 18:13:25,411 INFO L226 Difference]: Without dead ends: 54 [2018-09-21 18:13:25,412 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2018-09-21 18:13:25,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2018-09-21 18:13:25,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 50. [2018-09-21 18:13:25,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2018-09-21 18:13:25,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 54 transitions. [2018-09-21 18:13:25,418 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 54 transitions. Word has length 62 [2018-09-21 18:13:25,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:13:25,418 INFO L480 AbstractCegarLoop]: Abstraction has 50 states and 54 transitions. [2018-09-21 18:13:25,418 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-09-21 18:13:25,418 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 54 transitions. [2018-09-21 18:13:25,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2018-09-21 18:13:25,419 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:13:25,419 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-21 18:13:25,419 INFO L423 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:13:25,420 INFO L82 PathProgramCache]: Analyzing trace with hash 863180286, now seen corresponding path program 1 times [2018-09-21 18:13:25,420 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-21 18:13:25,420 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 18 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2018-09-21 18:13:25,425 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 18 with mathsat -unsat_core_generation=3 [2018-09-21 18:13:25,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:13:25,550 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-21 18:13:25,599 INFO L682 Elim1Store]: detected equality via solver [2018-09-21 18:13:25,605 INFO L682 Elim1Store]: detected equality via solver [2018-09-21 18:13:25,607 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 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 27 treesize of output 35 [2018-09-21 18:13:25,618 INFO L700 Elim1Store]: detected not equals via solver [2018-09-21 18:13:25,636 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 25 [2018-09-21 18:13:25,637 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-21 18:13:25,651 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:13:25,674 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 18:13:25,674 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:36, output treesize:28 [2018-09-21 18:13:25,872 INFO L682 Elim1Store]: detected equality via solver [2018-09-21 18:13:25,873 INFO L682 Elim1Store]: detected equality via solver [2018-09-21 18:13:25,874 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 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 54 treesize of output 56 [2018-09-21 18:13:25,895 INFO L700 Elim1Store]: detected not equals via solver [2018-09-21 18:13:25,910 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 52 [2018-09-21 18:13:25,911 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-21 18:13:25,939 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:13:25,977 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2018-09-21 18:13:25,977 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:63, output treesize:55 [2018-09-21 18:13:26,042 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 35 treesize of output 27 [2018-09-21 18:13:26,048 INFO L700 Elim1Store]: detected not equals via solver [2018-09-21 18:13:26,053 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2018-09-21 18:13:26,054 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-21 18:13:26,065 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:13:26,078 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 18:13:26,079 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:44, output treesize:18 [2018-09-21 18:13:26,457 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 18:13:26,457 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-21 18:13:26,469 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:13:26,469 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2018-09-21 18:13:26,469 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-09-21 18:13:26,470 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-09-21 18:13:26,470 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2018-09-21 18:13:26,470 INFO L87 Difference]: Start difference. First operand 50 states and 54 transitions. Second operand 12 states. [2018-09-21 18:13:29,844 WARN L178 SmtUtils]: Spent 2.05 s on a formula simplification that was a NOOP. DAG size: 31 [2018-09-21 18:13:30,155 WARN L178 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 35 [2018-09-21 18:13:31,252 WARN L178 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 38 [2018-09-21 18:13:31,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:13:31,803 INFO L93 Difference]: Finished difference Result 55 states and 58 transitions. [2018-09-21 18:13:31,804 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-09-21 18:13:31,805 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 63 [2018-09-21 18:13:31,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:13:31,806 INFO L225 Difference]: With dead ends: 55 [2018-09-21 18:13:31,806 INFO L226 Difference]: Without dead ends: 50 [2018-09-21 18:13:31,806 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 53 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=91, Invalid=371, Unknown=0, NotChecked=0, Total=462 [2018-09-21 18:13:31,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2018-09-21 18:13:31,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 48. [2018-09-21 18:13:31,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2018-09-21 18:13:31,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 51 transitions. [2018-09-21 18:13:31,810 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 51 transitions. Word has length 63 [2018-09-21 18:13:31,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:13:31,811 INFO L480 AbstractCegarLoop]: Abstraction has 48 states and 51 transitions. [2018-09-21 18:13:31,811 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-09-21 18:13:31,811 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 51 transitions. [2018-09-21 18:13:31,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2018-09-21 18:13:31,813 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:13:31,813 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-21 18:13:31,814 INFO L423 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:13:31,814 INFO L82 PathProgramCache]: Analyzing trace with hash -933771073, now seen corresponding path program 1 times [2018-09-21 18:13:31,814 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-21 18:13:31,814 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 19 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2018-09-21 18:13:31,827 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 19 with mathsat -unsat_core_generation=3 [2018-09-21 18:13:31,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:13:31,927 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-21 18:13:31,955 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 18:13:31,955 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-21 18:13:31,968 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:13:31,969 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-21 18:13:31,969 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-21 18:13:31,969 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-21 18:13:31,969 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-21 18:13:31,969 INFO L87 Difference]: Start difference. First operand 48 states and 51 transitions. Second operand 4 states. [2018-09-21 18:13:32,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:13:32,013 INFO L93 Difference]: Finished difference Result 40 states and 43 transitions. [2018-09-21 18:13:32,014 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-21 18:13:32,014 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 63 [2018-09-21 18:13:32,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:13:32,014 INFO L225 Difference]: With dead ends: 40 [2018-09-21 18:13:32,015 INFO L226 Difference]: Without dead ends: 0 [2018-09-21 18:13:32,015 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 60 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 18:13:32,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-09-21 18:13:32,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-09-21 18:13:32,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-09-21 18:13:32,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-09-21 18:13:32,016 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 63 [2018-09-21 18:13:32,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:13:32,016 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-09-21 18:13:32,016 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-21 18:13:32,016 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-09-21 18:13:32,016 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-09-21 18:13:32,021 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.09 06:13:32 BoogieIcfgContainer [2018-09-21 18:13:32,022 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-21 18:13:32,022 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-09-21 18:13:32,022 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-09-21 18:13:32,023 INFO L276 PluginConnector]: Witness Printer initialized [2018-09-21 18:13:32,024 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 06:12:49" (3/4) ... [2018-09-21 18:13:32,030 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-09-21 18:13:32,038 INFO L316 RCFGBacktranslator]: Ignoring RootEdge to procedure isnan_double [2018-09-21 18:13:32,038 INFO L316 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-09-21 18:13:32,038 INFO L316 RCFGBacktranslator]: Ignoring RootEdge to procedure __fpclassify_double [2018-09-21 18:13:32,038 INFO L316 RCFGBacktranslator]: Ignoring RootEdge to procedure fmin_double [2018-09-21 18:13:32,038 INFO L316 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-09-21 18:13:32,044 INFO L850 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2018-09-21 18:13:32,044 INFO L850 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2018-09-21 18:13:32,044 INFO L850 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-09-21 18:13:32,097 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2018-09-21 18:13:32,097 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-09-21 18:13:32,098 INFO L168 Benchmark]: Toolchain (without parser) took 43390.97 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 285.7 MB). Free memory was 951.8 MB in the beginning and 910.5 MB in the end (delta: 41.3 MB). Peak memory consumption was 327.1 MB. Max. memory is 11.5 GB. [2018-09-21 18:13:32,099 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-09-21 18:13:32,101 INFO L168 Benchmark]: CACSL2BoogieTranslator took 362.36 ms. Allocated memory is still 1.0 GB. Free memory was 951.8 MB in the beginning and 941.1 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-09-21 18:13:32,102 INFO L168 Benchmark]: Boogie Preprocessor took 52.37 ms. Allocated memory is still 1.0 GB. Free memory was 941.1 MB in the beginning and 935.7 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-09-21 18:13:32,102 INFO L168 Benchmark]: RCFGBuilder took 793.74 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 140.5 MB). Free memory was 935.7 MB in the beginning and 1.1 GB in the end (delta: -171.8 MB). Peak memory consumption was 22.0 MB. Max. memory is 11.5 GB. [2018-09-21 18:13:32,103 INFO L168 Benchmark]: TraceAbstraction took 42098.87 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 145.2 MB). Free memory was 1.1 GB in the beginning and 919.2 MB in the end (delta: 188.4 MB). Peak memory consumption was 333.6 MB. Max. memory is 11.5 GB. [2018-09-21 18:13:32,103 INFO L168 Benchmark]: Witness Printer took 75.25 ms. Allocated memory is still 1.3 GB. Free memory was 919.2 MB in the beginning and 910.5 MB in the end (delta: 8.7 MB). Peak memory consumption was 8.7 MB. Max. memory is 11.5 GB. [2018-09-21 18:13:32,108 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 362.36 ms. Allocated memory is still 1.0 GB. Free memory was 951.8 MB in the beginning and 941.1 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 52.37 ms. Allocated memory is still 1.0 GB. Free memory was 941.1 MB in the beginning and 935.7 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 793.74 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 140.5 MB). Free memory was 935.7 MB in the beginning and 1.1 GB in the end (delta: -171.8 MB). Peak memory consumption was 22.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 42098.87 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 145.2 MB). Free memory was 1.1 GB in the beginning and 919.2 MB in the end (delta: 188.4 MB). Peak memory consumption was 333.6 MB. Max. memory is 11.5 GB. * Witness Printer took 75.25 ms. Allocated memory is still 1.3 GB. Free memory was 919.2 MB in the beginning and 910.5 MB in the end (delta: 8.7 MB). Peak memory consumption was 8.7 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 68]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 51 locations, 1 error locations. SAFE Result, 42.0s OverallTime, 17 OverallIterations, 2 TraceHistogramMax, 28.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 782 SDtfs, 309 SDslu, 2540 SDs, 0 SdLazy, 1378 SolverSat, 36 SolverUnsat, 3 SolverUnknown, 0 SolverNotchecked, 15.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1086 GetRequests, 936 SyntacticMatches, 5 SemanticMatches, 145 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 342 ImplicationChecksByTransitivity, 19.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=53occurred in iteration=10, 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, 17 MinimizatonAttempts, 41 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 1.3s SatisfiabilityAnalysisTime, 10.8s InterpolantComputationTime, 953 NumberOfCodeBlocks, 953 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 995 ConstructedInterpolants, 126 QuantifiedInterpolants, 250649 SizeOfPredicates, 65 NumberOfNonLiveVariables, 2009 ConjunctsInSsa, 128 ConjunctsInUnsatCore, 19 InterpolantComputations, 17 PerfectInterpolantSequences, 214/234 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...