/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/Ultimate.py --spec ../../../trunk/examples/svcomp/ReachSafety.prp --file ../../../trunk/examples/svcomp/float-newlib/double_req_bl_1252b_false-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_1252b_false-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 68fb7610e598522f7959f4a088cceed304c96257 --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_1252b_false-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 68fb7610e598522f7959f4a088cceed304c96257 --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.1.23-5eb3fea [2018-09-21 18:41:32,134 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-21 18:41:32,136 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-21 18:41:32,148 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-21 18:41:32,148 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-21 18:41:32,149 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-21 18:41:32,150 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-21 18:41:32,152 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-21 18:41:32,153 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-21 18:41:32,154 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-21 18:41:32,155 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-21 18:41:32,155 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-21 18:41:32,156 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-21 18:41:32,157 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-21 18:41:32,158 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-21 18:41:32,159 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-21 18:41:32,160 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-21 18:41:32,162 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-21 18:41:32,164 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-21 18:41:32,165 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-21 18:41:32,166 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-21 18:41:32,168 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-21 18:41:32,170 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-21 18:41:32,170 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-21 18:41:32,171 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-21 18:41:32,172 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-21 18:41:32,173 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-21 18:41:32,173 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-21 18:41:32,174 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-21 18:41:32,175 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-21 18:41:32,176 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-21 18:41:32,176 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-21 18:41:32,177 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-21 18:41:32,177 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-21 18:41:32,178 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-21 18:41:32,179 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-21 18:41:32,179 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-09-21 18:41:32,195 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-21 18:41:32,195 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-21 18:41:32,196 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-21 18:41:32,196 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-09-21 18:41:32,199 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-09-21 18:41:32,199 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-09-21 18:41:32,199 INFO L133 SettingsManager]: * Use SBE=true [2018-09-21 18:41:32,199 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-21 18:41:32,200 INFO L133 SettingsManager]: * sizeof long=4 [2018-09-21 18:41:32,200 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-21 18:41:32,200 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-09-21 18:41:32,200 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-21 18:41:32,200 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-21 18:41:32,200 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-21 18:41:32,201 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-21 18:41:32,201 INFO L133 SettingsManager]: * sizeof long double=12 [2018-09-21 18:41:32,201 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-21 18:41:32,201 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-21 18:41:32,201 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-21 18:41:32,201 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-21 18:41:32,202 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-21 18:41:32,202 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-21 18:41:32,202 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-21 18:41:32,202 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-21 18:41:32,202 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-21 18:41:32,202 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-21 18:41:32,203 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-09-21 18:41:32,203 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-21 18:41:32,203 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-21 18:41:32,203 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 -> 68fb7610e598522f7959f4a088cceed304c96257 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 18:41:32,251 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-21 18:41:32,270 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-21 18:41:32,276 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-21 18:41:32,277 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-21 18:41:32,278 INFO L276 PluginConnector]: CDTParser initialized [2018-09-21 18:41:32,279 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1252b_false-unreach-call.c [2018-09-21 18:41:32,527 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e3de5c2c9/ce028ce9e50c4d83bc91abd7d5b725fc/FLAGdfa2831e9 [2018-09-21 18:41:32,787 INFO L277 CDTParser]: Found 1 translation units. [2018-09-21 18:41:32,788 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1252b_false-unreach-call.c [2018-09-21 18:41:32,798 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e3de5c2c9/ce028ce9e50c4d83bc91abd7d5b725fc/FLAGdfa2831e9 [2018-09-21 18:41:32,822 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e3de5c2c9/ce028ce9e50c4d83bc91abd7d5b725fc [2018-09-21 18:41:32,827 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-21 18:41:32,831 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-21 18:41:32,834 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-21 18:41:32,834 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-21 18:41:32,846 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-21 18:41:32,847 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 06:41:32" (1/1) ... [2018-09-21 18:41:32,852 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c51fb85 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:41:32, skipping insertion in model container [2018-09-21 18:41:32,852 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 06:41:32" (1/1) ... [2018-09-21 18:41:32,867 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-21 18:41:33,140 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-21 18:41:33,158 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-21 18:41:33,175 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-21 18:41:33,203 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:41:33 WrapperNode [2018-09-21 18:41:33,203 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-21 18:41:33,204 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-21 18:41:33,204 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-21 18:41:33,204 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-21 18:41:33,222 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:41:33" (1/1) ... [2018-09-21 18:41:33,222 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:41:33" (1/1) ... [2018-09-21 18:41:33,233 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:41:33" (1/1) ... [2018-09-21 18:41:33,233 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:41:33" (1/1) ... [2018-09-21 18:41:33,248 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:41:33" (1/1) ... [2018-09-21 18:41:33,257 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:41:33" (1/1) ... [2018-09-21 18:41:33,264 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:41:33" (1/1) ... [2018-09-21 18:41:33,270 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-21 18:41:33,271 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-21 18:41:33,271 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-21 18:41:33,271 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-21 18:41:33,272 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:41:33" (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 18:41:33,416 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-21 18:41:33,416 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-21 18:41:33,416 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_double [2018-09-21 18:41:33,416 INFO L138 BoogieDeclarations]: Found implementation of procedure fmax_double [2018-09-21 18:41:33,417 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2018-09-21 18:41:33,417 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-21 18:41:33,417 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-09-21 18:41:33,417 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2018-09-21 18:41:33,417 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_double [2018-09-21 18:41:33,420 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-09-21 18:41:33,421 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2018-09-21 18:41:33,421 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-09-21 18:41:33,421 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-09-21 18:41:33,421 INFO L130 BoogieDeclarations]: Found specification of procedure fmax_double [2018-09-21 18:41:33,421 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2018-09-21 18:41:33,421 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-21 18:41:33,421 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-21 18:41:33,422 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-21 18:41:33,422 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real [2018-09-21 18:41:33,422 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2018-09-21 18:41:33,422 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2018-09-21 18:41:33,422 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-09-21 18:41:33,999 INFO L373 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-21 18:41:33,999 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 06:41:33 BoogieIcfgContainer [2018-09-21 18:41:34,000 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-21 18:41:34,001 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-21 18:41:34,002 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-21 18:41:34,006 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-21 18:41:34,006 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 06:41:32" (1/3) ... [2018-09-21 18:41:34,007 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fff02ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 06:41:34, skipping insertion in model container [2018-09-21 18:41:34,007 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:41:33" (2/3) ... [2018-09-21 18:41:34,007 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fff02ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 06:41:34, skipping insertion in model container [2018-09-21 18:41:34,008 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 06:41:33" (3/3) ... [2018-09-21 18:41:34,011 INFO L112 eAbstractionObserver]: Analyzing ICFG double_req_bl_1252b_false-unreach-call.c [2018-09-21 18:41:34,022 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-21 18:41:34,032 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-21 18:41:34,084 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-21 18:41:34,085 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-21 18:41:34,086 INFO L382 AbstractCegarLoop]: Hoare is false [2018-09-21 18:41:34,086 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-21 18:41:34,086 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-21 18:41:34,086 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-21 18:41:34,087 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-21 18:41:34,087 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-21 18:41:34,087 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-21 18:41:34,118 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states. [2018-09-21 18:41:34,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-09-21 18:41:34,141 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:41:34,142 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-21 18:41:34,148 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:41:34,154 INFO L82 PathProgramCache]: Analyzing trace with hash -2005512365, now seen corresponding path program 1 times [2018-09-21 18:41:34,157 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-21 18:41:34,157 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-21 18:41:34,221 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-21 18:41:34,221 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:41:34,221 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-21 18:41:34,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:41:34,346 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 18:41:34,348 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:41:34,348 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-09-21 18:41:34,352 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-09-21 18:41:34,368 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-09-21 18:41:34,369 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-09-21 18:41:34,372 INFO L87 Difference]: Start difference. First operand 64 states. Second operand 2 states. [2018-09-21 18:41:34,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:41:34,397 INFO L93 Difference]: Finished difference Result 64 states and 72 transitions. [2018-09-21 18:41:34,397 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-09-21 18:41:34,398 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 22 [2018-09-21 18:41:34,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:41:34,408 INFO L225 Difference]: With dead ends: 64 [2018-09-21 18:41:34,408 INFO L226 Difference]: Without dead ends: 60 [2018-09-21 18:41:34,410 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 18:41:34,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2018-09-21 18:41:34,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2018-09-21 18:41:34,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2018-09-21 18:41:34,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 68 transitions. [2018-09-21 18:41:34,457 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 68 transitions. Word has length 22 [2018-09-21 18:41:34,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:41:34,457 INFO L480 AbstractCegarLoop]: Abstraction has 60 states and 68 transitions. [2018-09-21 18:41:34,457 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-09-21 18:41:34,457 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 68 transitions. [2018-09-21 18:41:34,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-09-21 18:41:34,461 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:41:34,462 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-21 18:41:34,462 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:41:34,462 INFO L82 PathProgramCache]: Analyzing trace with hash 1797088685, now seen corresponding path program 1 times [2018-09-21 18:41:34,463 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-21 18:41:34,463 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-21 18:41:34,465 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-21 18:41:34,465 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:41:34,465 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-21 18:41:34,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:41:34,741 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 18:41:34,741 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:41:34,742 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-21 18:41:34,744 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-21 18:41:34,744 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-21 18:41:34,744 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-21 18:41:34,745 INFO L87 Difference]: Start difference. First operand 60 states and 68 transitions. Second operand 4 states. [2018-09-21 18:41:34,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:41:34,893 INFO L93 Difference]: Finished difference Result 64 states and 73 transitions. [2018-09-21 18:41:34,894 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-21 18:41:34,894 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 35 [2018-09-21 18:41:34,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:41:34,898 INFO L225 Difference]: With dead ends: 64 [2018-09-21 18:41:34,898 INFO L226 Difference]: Without dead ends: 64 [2018-09-21 18:41:34,899 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-21 18:41:34,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2018-09-21 18:41:34,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2018-09-21 18:41:34,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2018-09-21 18:41:34,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 73 transitions. [2018-09-21 18:41:34,911 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 73 transitions. Word has length 35 [2018-09-21 18:41:34,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:41:34,911 INFO L480 AbstractCegarLoop]: Abstraction has 64 states and 73 transitions. [2018-09-21 18:41:34,912 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-21 18:41:34,912 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 73 transitions. [2018-09-21 18:41:34,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-09-21 18:41:34,913 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:41:34,913 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-21 18:41:34,914 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:41:34,914 INFO L82 PathProgramCache]: Analyzing trace with hash -957411872, now seen corresponding path program 1 times [2018-09-21 18:41:34,914 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-21 18:41:34,914 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-21 18:41:34,915 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-21 18:41:34,915 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:41:34,915 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-21 18:41:34,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:41:35,056 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 18:41:35,056 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:41:35,057 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-21 18:41:35,057 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-21 18:41:35,057 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-21 18:41:35,058 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-21 18:41:35,058 INFO L87 Difference]: Start difference. First operand 64 states and 73 transitions. Second operand 4 states. [2018-09-21 18:41:35,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:41:35,142 INFO L93 Difference]: Finished difference Result 68 states and 78 transitions. [2018-09-21 18:41:35,143 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-21 18:41:35,143 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 38 [2018-09-21 18:41:35,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:41:35,146 INFO L225 Difference]: With dead ends: 68 [2018-09-21 18:41:35,146 INFO L226 Difference]: Without dead ends: 68 [2018-09-21 18:41:35,146 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 18:41:35,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2018-09-21 18:41:35,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 64. [2018-09-21 18:41:35,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2018-09-21 18:41:35,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 73 transitions. [2018-09-21 18:41:35,156 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 73 transitions. Word has length 38 [2018-09-21 18:41:35,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:41:35,156 INFO L480 AbstractCegarLoop]: Abstraction has 64 states and 73 transitions. [2018-09-21 18:41:35,156 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-21 18:41:35,157 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 73 transitions. [2018-09-21 18:41:35,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-09-21 18:41:35,159 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:41:35,159 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 18:41:35,159 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:41:35,160 INFO L82 PathProgramCache]: Analyzing trace with hash 1540604065, now seen corresponding path program 1 times [2018-09-21 18:41:35,160 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-21 18:41:35,160 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-21 18:41:35,162 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-21 18:41:35,162 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:41:35,163 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-21 18:41:35,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-09-21 18:41:35,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-09-21 18:41:35,255 INFO L443 BasicCegarLoop]: Counterexample might be feasible [2018-09-21 18:41:35,290 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.09 06:41:35 BoogieIcfgContainer [2018-09-21 18:41:35,291 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-21 18:41:35,291 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-09-21 18:41:35,291 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-09-21 18:41:35,292 INFO L276 PluginConnector]: Witness Printer initialized [2018-09-21 18:41:35,293 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 06:41:33" (3/4) ... [2018-09-21 18:41:35,297 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-09-21 18:41:35,298 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-09-21 18:41:35,299 INFO L168 Benchmark]: Toolchain (without parser) took 2471.13 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 124.3 MB). Free memory was 953.2 MB in the beginning and 1.0 GB in the end (delta: -92.4 MB). Peak memory consumption was 31.8 MB. Max. memory is 11.5 GB. [2018-09-21 18:41:35,301 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-09-21 18:41:35,302 INFO L168 Benchmark]: CACSL2BoogieTranslator took 369.53 ms. Allocated memory is still 1.0 GB. Free memory was 953.2 MB in the beginning and 942.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-09-21 18:41:35,303 INFO L168 Benchmark]: Boogie Preprocessor took 66.72 ms. Allocated memory is still 1.0 GB. Free memory was 942.5 MB in the beginning and 937.1 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-09-21 18:41:35,304 INFO L168 Benchmark]: RCFGBuilder took 729.09 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 124.3 MB). Free memory was 937.1 MB in the beginning and 1.1 GB in the end (delta: -155.8 MB). Peak memory consumption was 21.5 MB. Max. memory is 11.5 GB. [2018-09-21 18:41:35,305 INFO L168 Benchmark]: TraceAbstraction took 1289.34 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 47.3 MB). Peak memory consumption was 47.3 MB. Max. memory is 11.5 GB. [2018-09-21 18:41:35,307 INFO L168 Benchmark]: Witness Printer took 6.64 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-09-21 18:41:35,311 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 369.53 ms. Allocated memory is still 1.0 GB. Free memory was 953.2 MB in the beginning and 942.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 66.72 ms. Allocated memory is still 1.0 GB. Free memory was 942.5 MB in the beginning and 937.1 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 729.09 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 124.3 MB). Free memory was 937.1 MB in the beginning and 1.1 GB in the end (delta: -155.8 MB). Peak memory consumption was 21.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1289.34 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 47.3 MB). Peak memory consumption was 47.3 MB. Max. memory is 11.5 GB. * Witness Printer took 6.64 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 85]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 84, overapproximation of someUnaryDOUBLEoperation at line 80. Possible FailurePath: [L79] double x = 0.0; [L80] double y = -0.0; VAL [x=0] [L81] CALL, EXPR fmax_double(x, y) VAL [\old(x)=0, \old(y)=4294967300] [L52] CALL, EXPR __fpclassify_double(x) VAL [\old(x)=0] [L24] __uint32_t msw, lsw; VAL [\old(x)=0, x=0] [L27] FCALL ieee_double_shape_type ew_u; VAL [\old(x)=0, ew_u={4294967301:0}, x=0] [L28] FCALL ew_u.value = (x) VAL [\old(x)=0, ew_u={4294967301:0}, x=0] [L29] EXPR, FCALL ew_u.parts.msw VAL [\old(x)=0, ew_u={4294967301:0}, ew_u.parts.msw=4293918721, x=0] [L29] (msw) = ew_u.parts.msw VAL [\old(x)=0, ew_u={4294967301:0}, ew_u.parts.msw=4293918721, msw=4293918721, x=0] [L29] FCALL (msw) = ew_u.parts.msw VAL [(msw) = ew_u.parts.msw=4294967298, \old(x)=0, ew_u={4294967301:0}, ew_u.parts.msw=4293918721, msw=4293918721, x=0] [L30] EXPR, FCALL ew_u.parts.lsw VAL [\old(x)=0, ew_u={4294967301:0}, ew_u.parts.lsw=4294967297, msw=4293918721, x=0] [L30] (lsw) = ew_u.parts.lsw VAL [\old(x)=0, ew_u={4294967301:0}, ew_u.parts.lsw=4294967297, lsw=4294967297, msw=4293918721, x=0] [L30] FCALL (lsw) = ew_u.parts.lsw VAL [(lsw) = ew_u.parts.lsw=4294967303, \old(x)=0, ew_u={4294967301:0}, ew_u.parts.lsw=4294967297, lsw=4294967297, msw=4293918721, x=0] [L31] COND FALSE !(0) VAL [\old(x)=0, lsw=4294967297, msw=4293918721, x=0] [L33-L34] COND FALSE !((msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000)) VAL [\old(x)=0, lsw=4294967297, msw=4293918721, x=0] [L36-L37] COND FALSE !((msw >= 0x00100000 && msw <= 0x7fefffff) || (msw >= 0x80100000 && msw <= 0xffefffff)) VAL [\old(x)=0, lsw=4294967297, msw=4293918721, x=0] [L39-L40] COND FALSE !((msw >= 0x00000000 && msw <= 0x000fffff) || (msw >= 0x80000000 && msw <= 0x800fffff)) VAL [\old(x)=0, lsw=4294967297, msw=4293918721, x=0] [L43-L44] COND FALSE !((msw == 0x7ff00000 && lsw == 0x00000000) || (msw == 0xfff00000 && lsw == 0x00000000)) [L47] RET return 0; VAL [\old(x)=0, \result=0, lsw=4294967297, msw=4293918721, x=0] [L52] EXPR __fpclassify_double(x) VAL [\old(x)=0, \old(y)=4294967300, __fpclassify_double(x)=0, x=0, y=4294967300] [L52] COND TRUE __fpclassify_double(x) == 0 [L53] RET return y; VAL [\old(x)=0, \old(y)=4294967300, \result=4294967300, x=0, y=4294967300] [L81] EXPR fmax_double(x, y) VAL [fmax_double(x, y)=4294967300, x=0, y=4294967300] [L81] double res = fmax_double(x, y); [L84] EXPR res == 0.0 && __signbit_double(res) == 0 VAL [res=4294967300, res == 0.0 && __signbit_double(res) == 0=0, x=0, y=4294967300] [L84] COND FALSE, EXPR !(res == 0.0 && __signbit_double(res) == 0) VAL [res=4294967300, res == 0.0 && __signbit_double(res) == 0=0, x=0, y=4294967300] [L84] COND TRUE !(res == 0.0 && __signbit_double(res) == 0) [L85] __VERIFIER_error() VAL [res=4294967300, x=0, y=4294967300] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 64 locations, 1 error locations. UNSAFE Result, 1.2s OverallTime, 4 OverallIterations, 1 TraceHistogramMax, 0.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 209 SDtfs, 0 SDslu, 258 SDs, 0 SdLazy, 21 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=64occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 4 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 133 NumberOfCodeBlocks, 133 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 92 ConstructedInterpolants, 0 QuantifiedInterpolants, 3534 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.23-5eb3fea [2018-09-21 18:41:37,663 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-21 18:41:37,665 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-21 18:41:37,677 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-21 18:41:37,677 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-21 18:41:37,679 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-21 18:41:37,680 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-21 18:41:37,682 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-21 18:41:37,684 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-21 18:41:37,685 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-21 18:41:37,686 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-21 18:41:37,687 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-21 18:41:37,688 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-21 18:41:37,689 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-21 18:41:37,690 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-21 18:41:37,691 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-21 18:41:37,693 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-21 18:41:37,695 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-21 18:41:37,697 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-21 18:41:37,699 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-21 18:41:37,700 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-21 18:41:37,702 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-21 18:41:37,705 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-21 18:41:37,705 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-21 18:41:37,706 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-21 18:41:37,707 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-21 18:41:37,708 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-21 18:41:37,709 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-21 18:41:37,710 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-21 18:41:37,712 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-21 18:41:37,712 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-21 18:41:37,713 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-21 18:41:37,713 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-21 18:41:37,713 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-21 18:41:37,715 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-21 18:41:37,716 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-21 18:41:37,716 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2018-09-21 18:41:37,732 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-21 18:41:37,733 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-21 18:41:37,733 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-21 18:41:37,734 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-09-21 18:41:37,734 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-09-21 18:41:37,734 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-09-21 18:41:37,735 INFO L133 SettingsManager]: * Use SBE=true [2018-09-21 18:41:37,735 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-21 18:41:37,735 INFO L133 SettingsManager]: * sizeof long=4 [2018-09-21 18:41:37,735 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-09-21 18:41:37,736 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-21 18:41:37,737 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-21 18:41:37,737 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-21 18:41:37,737 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-21 18:41:37,737 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-09-21 18:41:37,737 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-09-21 18:41:37,738 INFO L133 SettingsManager]: * sizeof long double=12 [2018-09-21 18:41:37,738 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-21 18:41:37,738 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-21 18:41:37,739 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-21 18:41:37,739 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-21 18:41:37,739 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-21 18:41:37,739 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-21 18:41:37,739 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-21 18:41:37,740 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-21 18:41:37,740 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-21 18:41:37,740 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-21 18:41:37,740 INFO L133 SettingsManager]: * Trace refinement strategy=WOLF [2018-09-21 18:41:37,740 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-21 18:41:37,742 INFO L133 SettingsManager]: * Command for external solver=cvc4nyu --tear-down-incremental --rewrite-divk --print-success --lang smt [2018-09-21 18:41:37,742 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-09-21 18:41:37,742 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 -> 68fb7610e598522f7959f4a088cceed304c96257 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 18:41:37,797 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-21 18:41:37,816 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-21 18:41:37,824 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-21 18:41:37,826 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-21 18:41:37,826 INFO L276 PluginConnector]: CDTParser initialized [2018-09-21 18:41:37,827 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1252b_false-unreach-call.c [2018-09-21 18:41:38,179 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2114af944/0a9172c7f87e4897ae38f6f55726115f/FLAG740a91294 [2018-09-21 18:41:38,367 INFO L277 CDTParser]: Found 1 translation units. [2018-09-21 18:41:38,367 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1252b_false-unreach-call.c [2018-09-21 18:41:38,381 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2114af944/0a9172c7f87e4897ae38f6f55726115f/FLAG740a91294 [2018-09-21 18:41:38,399 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2114af944/0a9172c7f87e4897ae38f6f55726115f [2018-09-21 18:41:38,404 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-21 18:41:38,408 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-21 18:41:38,409 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-21 18:41:38,409 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-21 18:41:38,419 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-21 18:41:38,421 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 06:41:38" (1/1) ... [2018-09-21 18:41:38,425 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@470a4409 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:41:38, skipping insertion in model container [2018-09-21 18:41:38,426 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 06:41:38" (1/1) ... [2018-09-21 18:41:38,441 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-21 18:41:38,739 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-21 18:41:38,764 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-21 18:41:38,782 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-21 18:41:38,843 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:41:38 WrapperNode [2018-09-21 18:41:38,843 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-21 18:41:38,844 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-21 18:41:38,844 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-21 18:41:38,845 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-21 18:41:38,859 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:41:38" (1/1) ... [2018-09-21 18:41:38,859 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:41:38" (1/1) ... [2018-09-21 18:41:38,871 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:41:38" (1/1) ... [2018-09-21 18:41:38,871 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:41:38" (1/1) ... [2018-09-21 18:41:38,881 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:41:38" (1/1) ... [2018-09-21 18:41:38,887 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:41:38" (1/1) ... [2018-09-21 18:41:38,890 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:41:38" (1/1) ... [2018-09-21 18:41:38,894 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-21 18:41:38,895 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-21 18:41:38,895 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-21 18:41:38,895 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-21 18:41:38,896 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:41:38" (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 18:41:39,041 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-21 18:41:39,041 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-21 18:41:39,041 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_double [2018-09-21 18:41:39,041 INFO L138 BoogieDeclarations]: Found implementation of procedure fmax_double [2018-09-21 18:41:39,041 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2018-09-21 18:41:39,042 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-21 18:41:39,042 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-09-21 18:41:39,042 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2018-09-21 18:41:39,042 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_double [2018-09-21 18:41:39,042 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-09-21 18:41:39,042 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2018-09-21 18:41:39,043 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2018-09-21 18:41:39,043 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-09-21 18:41:39,043 INFO L130 BoogieDeclarations]: Found specification of procedure fmax_double [2018-09-21 18:41:39,043 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2018-09-21 18:41:39,043 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-21 18:41:39,043 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-21 18:41:39,046 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-21 18:41:39,046 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2018-09-21 18:41:39,046 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2018-09-21 18:41:39,047 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intFLOATTYPE8 [2018-09-21 18:41:39,047 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2018-09-21 18:41:39,238 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-21 18:41:39,285 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-21 18:41:39,588 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-21 18:41:39,611 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-21 18:41:39,631 WARN L312 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-09-21 18:41:39,688 INFO L373 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-21 18:41:39,689 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 06:41:39 BoogieIcfgContainer [2018-09-21 18:41:39,690 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-21 18:41:39,692 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-21 18:41:39,692 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-21 18:41:39,699 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-21 18:41:39,699 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 06:41:38" (1/3) ... [2018-09-21 18:41:39,700 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@355b6daf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 06:41:39, skipping insertion in model container [2018-09-21 18:41:39,701 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 06:41:38" (2/3) ... [2018-09-21 18:41:39,702 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@355b6daf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 06:41:39, skipping insertion in model container [2018-09-21 18:41:39,702 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 06:41:39" (3/3) ... [2018-09-21 18:41:39,704 INFO L112 eAbstractionObserver]: Analyzing ICFG double_req_bl_1252b_false-unreach-call.c [2018-09-21 18:41:39,714 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-21 18:41:39,722 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-21 18:41:39,761 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-21 18:41:39,762 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-21 18:41:39,762 INFO L382 AbstractCegarLoop]: Hoare is false [2018-09-21 18:41:39,762 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-21 18:41:39,762 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-21 18:41:39,762 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-21 18:41:39,763 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-21 18:41:39,763 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-21 18:41:39,763 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-21 18:41:39,781 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states. [2018-09-21 18:41:39,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-09-21 18:41:39,803 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:41:39,804 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-21 18:41:39,806 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:41:39,814 INFO L82 PathProgramCache]: Analyzing trace with hash -1225609055, now seen corresponding path program 1 times [2018-09-21 18:41:39,820 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-21 18:41:39,820 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2018-09-21 18:41:39,832 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:41:39,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:41:39,906 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-21 18:41:39,926 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 18:41:39,926 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-21 18:41:39,942 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:41:39,942 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-09-21 18:41:39,945 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-09-21 18:41:39,959 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-09-21 18:41:39,960 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-09-21 18:41:39,963 INFO L87 Difference]: Start difference. First operand 62 states. Second operand 2 states. [2018-09-21 18:41:39,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:41:39,986 INFO L93 Difference]: Finished difference Result 62 states and 70 transitions. [2018-09-21 18:41:39,986 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-09-21 18:41:39,988 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 21 [2018-09-21 18:41:39,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:41:39,999 INFO L225 Difference]: With dead ends: 62 [2018-09-21 18:41:40,001 INFO L226 Difference]: Without dead ends: 58 [2018-09-21 18:41:40,003 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-09-21 18:41:40,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2018-09-21 18:41:40,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2018-09-21 18:41:40,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2018-09-21 18:41:40,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 66 transitions. [2018-09-21 18:41:40,054 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 66 transitions. Word has length 21 [2018-09-21 18:41:40,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:41:40,055 INFO L480 AbstractCegarLoop]: Abstraction has 58 states and 66 transitions. [2018-09-21 18:41:40,055 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-09-21 18:41:40,055 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 66 transitions. [2018-09-21 18:41:40,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-09-21 18:41:40,058 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:41:40,059 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-21 18:41:40,059 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:41:40,059 INFO L82 PathProgramCache]: Analyzing trace with hash 132746963, now seen corresponding path program 1 times [2018-09-21 18:41:40,060 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-21 18:41:40,060 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2018-09-21 18:41:40,072 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2018-09-21 18:41:40,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:41:40,156 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-21 18:41:40,260 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 18:41:40,260 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-21 18:41:40,275 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:41:40,276 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-21 18:41:40,278 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-21 18:41:40,279 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-21 18:41:40,279 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-21 18:41:40,280 INFO L87 Difference]: Start difference. First operand 58 states and 66 transitions. Second operand 4 states. [2018-09-21 18:41:40,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:41:40,436 INFO L93 Difference]: Finished difference Result 61 states and 70 transitions. [2018-09-21 18:41:40,437 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-21 18:41:40,438 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 34 [2018-09-21 18:41:40,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:41:40,442 INFO L225 Difference]: With dead ends: 61 [2018-09-21 18:41:40,442 INFO L226 Difference]: Without dead ends: 61 [2018-09-21 18:41:40,443 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-21 18:41:40,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2018-09-21 18:41:40,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2018-09-21 18:41:40,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2018-09-21 18:41:40,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 70 transitions. [2018-09-21 18:41:40,456 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 70 transitions. Word has length 34 [2018-09-21 18:41:40,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:41:40,456 INFO L480 AbstractCegarLoop]: Abstraction has 61 states and 70 transitions. [2018-09-21 18:41:40,456 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-21 18:41:40,457 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 70 transitions. [2018-09-21 18:41:40,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-09-21 18:41:40,459 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:41:40,459 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-21 18:41:40,460 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:41:40,460 INFO L82 PathProgramCache]: Analyzing trace with hash 201431320, now seen corresponding path program 1 times [2018-09-21 18:41:40,461 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-21 18:41:40,461 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2018-09-21 18:41:40,474 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2018-09-21 18:41:40,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:41:40,554 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-21 18:41:40,715 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 18:41:40,735 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 18:41:40,736 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-21 18:41:40,756 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:41:40,778 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 18:41:40,778 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:24, output treesize:20 [2018-09-21 18:41:40,908 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 18:41:40,931 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 18:41:40,931 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-21 18:41:40,954 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:41:41,033 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 18:41:41,034 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:29, output treesize:14 [2018-09-21 18:41:41,733 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 18:41:41,733 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-21 18:41:41,751 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:41:41,751 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2018-09-21 18:41:41,752 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-09-21 18:41:41,752 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-09-21 18:41:41,752 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2018-09-21 18:41:41,753 INFO L87 Difference]: Start difference. First operand 61 states and 70 transitions. Second operand 10 states. [2018-09-21 18:41:44,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:41:44,277 INFO L93 Difference]: Finished difference Result 70 states and 85 transitions. [2018-09-21 18:41:44,279 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-09-21 18:41:44,280 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 35 [2018-09-21 18:41:44,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:41:44,282 INFO L225 Difference]: With dead ends: 70 [2018-09-21 18:41:44,282 INFO L226 Difference]: Without dead ends: 63 [2018-09-21 18:41:44,282 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2018-09-21 18:41:44,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2018-09-21 18:41:44,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2018-09-21 18:41:44,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2018-09-21 18:41:44,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 72 transitions. [2018-09-21 18:41:44,293 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 72 transitions. Word has length 35 [2018-09-21 18:41:44,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:41:44,293 INFO L480 AbstractCegarLoop]: Abstraction has 63 states and 72 transitions. [2018-09-21 18:41:44,293 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-09-21 18:41:44,294 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 72 transitions. [2018-09-21 18:41:44,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-09-21 18:41:44,295 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:41:44,295 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-21 18:41:44,296 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:41:44,296 INFO L82 PathProgramCache]: Analyzing trace with hash 1544592367, now seen corresponding path program 1 times [2018-09-21 18:41:44,296 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-21 18:41:44,297 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2018-09-21 18:41:44,302 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:41:44,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:41:44,361 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-21 18:41:44,391 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 18:41:44,391 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-21 18:41:44,402 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:41:44,402 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-21 18:41:44,403 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-21 18:41:44,403 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-21 18:41:44,403 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-21 18:41:44,404 INFO L87 Difference]: Start difference. First operand 63 states and 72 transitions. Second operand 4 states. [2018-09-21 18:41:44,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:41:44,476 INFO L93 Difference]: Finished difference Result 66 states and 76 transitions. [2018-09-21 18:41:44,477 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-21 18:41:44,477 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 36 [2018-09-21 18:41:44,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:41:44,479 INFO L225 Difference]: With dead ends: 66 [2018-09-21 18:41:44,479 INFO L226 Difference]: Without dead ends: 66 [2018-09-21 18:41:44,480 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-21 18:41:44,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2018-09-21 18:41:44,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 63. [2018-09-21 18:41:44,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2018-09-21 18:41:44,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 72 transitions. [2018-09-21 18:41:44,492 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 72 transitions. Word has length 36 [2018-09-21 18:41:44,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:41:44,493 INFO L480 AbstractCegarLoop]: Abstraction has 63 states and 72 transitions. [2018-09-21 18:41:44,493 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-21 18:41:44,493 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 72 transitions. [2018-09-21 18:41:44,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-09-21 18:41:44,495 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:41:44,495 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-21 18:41:44,496 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:41:44,496 INFO L82 PathProgramCache]: Analyzing trace with hash -553142156, now seen corresponding path program 1 times [2018-09-21 18:41:44,496 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-21 18:41:44,497 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 18:41:44,504 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:41:44,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:41:44,572 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-21 18:41:44,624 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 18:41:44,630 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 18:41:44,631 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-21 18:41:44,646 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:41:44,663 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 18:41:44,664 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:24, output treesize:20 [2018-09-21 18:41:44,713 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 18:41:44,720 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 18:41:44,721 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-21 18:41:44,726 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:41:44,737 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 18:41:44,738 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:29, output treesize:14 [2018-09-21 18:41:44,982 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 18:41:44,983 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-21 18:41:44,993 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:41:44,993 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2018-09-21 18:41:44,994 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-09-21 18:41:44,994 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-09-21 18:41:44,994 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2018-09-21 18:41:44,995 INFO L87 Difference]: Start difference. First operand 63 states and 72 transitions. Second operand 10 states. [2018-09-21 18:41:45,619 WARN L178 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 29 [2018-09-21 18:41:46,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:41:46,991 INFO L93 Difference]: Finished difference Result 69 states and 82 transitions. [2018-09-21 18:41:46,992 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-09-21 18:41:46,992 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 37 [2018-09-21 18:41:46,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:41:46,994 INFO L225 Difference]: With dead ends: 69 [2018-09-21 18:41:46,995 INFO L226 Difference]: Without dead ends: 62 [2018-09-21 18:41:46,997 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 28 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 18:41:46,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2018-09-21 18:41:47,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 60. [2018-09-21 18:41:47,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2018-09-21 18:41:47,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 67 transitions. [2018-09-21 18:41:47,007 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 67 transitions. Word has length 37 [2018-09-21 18:41:47,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:41:47,007 INFO L480 AbstractCegarLoop]: Abstraction has 60 states and 67 transitions. [2018-09-21 18:41:47,007 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-09-21 18:41:47,008 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 67 transitions. [2018-09-21 18:41:47,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2018-09-21 18:41:47,009 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:41:47,010 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-21 18:41:47,011 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:41:47,011 INFO L82 PathProgramCache]: Analyzing trace with hash -1819330129, now seen corresponding path program 1 times [2018-09-21 18:41:47,011 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-21 18:41:47,012 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 18:41:47,016 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:41:47,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:41:47,105 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-21 18:41:47,138 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 18:41:47,138 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-21 18:41:47,156 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:41:47,156 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-21 18:41:47,157 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-21 18:41:47,157 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-21 18:41:47,157 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-21 18:41:47,157 INFO L87 Difference]: Start difference. First operand 60 states and 67 transitions. Second operand 4 states. [2018-09-21 18:41:47,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:41:47,262 INFO L93 Difference]: Finished difference Result 63 states and 71 transitions. [2018-09-21 18:41:47,263 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-21 18:41:47,263 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 54 [2018-09-21 18:41:47,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:41:47,265 INFO L225 Difference]: With dead ends: 63 [2018-09-21 18:41:47,265 INFO L226 Difference]: Without dead ends: 63 [2018-09-21 18:41:47,266 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-21 18:41:47,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2018-09-21 18:41:47,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2018-09-21 18:41:47,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2018-09-21 18:41:47,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 71 transitions. [2018-09-21 18:41:47,273 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 71 transitions. Word has length 54 [2018-09-21 18:41:47,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:41:47,273 INFO L480 AbstractCegarLoop]: Abstraction has 63 states and 71 transitions. [2018-09-21 18:41:47,273 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-21 18:41:47,274 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 71 transitions. [2018-09-21 18:41:47,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2018-09-21 18:41:47,276 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:41:47,276 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-21 18:41:47,277 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:41:47,277 INFO L82 PathProgramCache]: Analyzing trace with hash -1654387358, now seen corresponding path program 1 times [2018-09-21 18:41:47,278 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-21 18:41:47,278 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 8 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2018-09-21 18:41:47,289 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 8 with mathsat -unsat_core_generation=3 [2018-09-21 18:41:47,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:41:47,409 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-21 18:41:47,499 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 18:41:47,508 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 18:41:47,508 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-21 18:41:47,514 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:41:47,527 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 18:41:47,528 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:24, output treesize:20 [2018-09-21 18:41:47,569 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 18:41:47,575 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 18:41:47,576 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-21 18:41:47,579 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:41:47,590 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 18:41:47,591 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:29, output treesize:14 [2018-09-21 18:41:48,143 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 18:41:48,144 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-21 18:41:48,162 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:41:48,162 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2018-09-21 18:41:48,163 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-09-21 18:41:48,164 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-09-21 18:41:48,164 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2018-09-21 18:41:48,164 INFO L87 Difference]: Start difference. First operand 63 states and 71 transitions. Second operand 10 states. [2018-09-21 18:41:52,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:41:52,062 INFO L93 Difference]: Finished difference Result 70 states and 79 transitions. [2018-09-21 18:41:52,064 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-09-21 18:41:52,064 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 55 [2018-09-21 18:41:52,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:41:52,065 INFO L225 Difference]: With dead ends: 70 [2018-09-21 18:41:52,065 INFO L226 Difference]: Without dead ends: 63 [2018-09-21 18:41:52,067 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2018-09-21 18:41:52,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2018-09-21 18:41:52,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2018-09-21 18:41:52,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2018-09-21 18:41:52,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 70 transitions. [2018-09-21 18:41:52,075 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 70 transitions. Word has length 55 [2018-09-21 18:41:52,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:41:52,075 INFO L480 AbstractCegarLoop]: Abstraction has 63 states and 70 transitions. [2018-09-21 18:41:52,075 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-09-21 18:41:52,075 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 70 transitions. [2018-09-21 18:41:52,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2018-09-21 18:41:52,077 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:41:52,078 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-21 18:41:52,078 INFO L423 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:41:52,078 INFO L82 PathProgramCache]: Analyzing trace with hash -953708108, now seen corresponding path program 1 times [2018-09-21 18:41:52,079 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-21 18:41:52,079 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 18:41:52,088 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:41:52,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:41:52,189 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-21 18:41:52,374 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 18:41:52,374 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-21 18:41:52,387 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:41:52,387 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-09-21 18:41:52,387 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-21 18:41:52,388 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-21 18:41:52,388 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-09-21 18:41:52,388 INFO L87 Difference]: Start difference. First operand 63 states and 70 transitions. Second operand 5 states. [2018-09-21 18:41:52,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:41:52,628 INFO L93 Difference]: Finished difference Result 66 states and 72 transitions. [2018-09-21 18:41:52,629 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-09-21 18:41:52,629 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 56 [2018-09-21 18:41:52,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:41:52,631 INFO L225 Difference]: With dead ends: 66 [2018-09-21 18:41:52,632 INFO L226 Difference]: Without dead ends: 63 [2018-09-21 18:41:52,632 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 51 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-09-21 18:41:52,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2018-09-21 18:41:52,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2018-09-21 18:41:52,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2018-09-21 18:41:52,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 69 transitions. [2018-09-21 18:41:52,639 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 69 transitions. Word has length 56 [2018-09-21 18:41:52,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:41:52,639 INFO L480 AbstractCegarLoop]: Abstraction has 63 states and 69 transitions. [2018-09-21 18:41:52,639 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-21 18:41:52,640 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 69 transitions. [2018-09-21 18:41:52,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2018-09-21 18:41:52,642 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:41:52,642 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-21 18:41:52,642 INFO L423 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:41:52,643 INFO L82 PathProgramCache]: Analyzing trace with hash -1763054734, now seen corresponding path program 1 times [2018-09-21 18:41:52,643 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-21 18:41:52,643 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 18:41:52,650 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:41:52,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:41:52,759 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-21 18:41:53,056 WARN L178 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 9 DAG size of output: 1 [2018-09-21 18:41:53,058 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 18:41:53,058 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-21 18:41:53,069 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:41:53,069 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-09-21 18:41:53,069 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-09-21 18:41:53,070 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-09-21 18:41:53,070 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-09-21 18:41:53,070 INFO L87 Difference]: Start difference. First operand 63 states and 69 transitions. Second operand 8 states. [2018-09-21 18:41:58,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:41:58,685 INFO L93 Difference]: Finished difference Result 67 states and 73 transitions. [2018-09-21 18:41:58,688 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-21 18:41:58,688 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 56 [2018-09-21 18:41:58,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:41:58,689 INFO L225 Difference]: With dead ends: 67 [2018-09-21 18:41:58,689 INFO L226 Difference]: Without dead ends: 67 [2018-09-21 18:41:58,690 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2018-09-21 18:41:58,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2018-09-21 18:41:58,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2018-09-21 18:41:58,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2018-09-21 18:41:58,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 73 transitions. [2018-09-21 18:41:58,696 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 73 transitions. Word has length 56 [2018-09-21 18:41:58,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:41:58,696 INFO L480 AbstractCegarLoop]: Abstraction has 67 states and 73 transitions. [2018-09-21 18:41:58,696 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-09-21 18:41:58,696 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 73 transitions. [2018-09-21 18:41:58,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2018-09-21 18:41:58,698 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:41:58,699 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-21 18:41:58,699 INFO L423 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:41:58,699 INFO L82 PathProgramCache]: Analyzing trace with hash -1622182773, now seen corresponding path program 1 times [2018-09-21 18:41:58,700 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-21 18:41:58,700 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 18:41:58,709 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:41:58,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:41:58,807 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-21 18:41:58,827 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 18:41:58,828 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-21 18:41:58,838 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:41:58,839 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-21 18:41:58,839 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-21 18:41:58,839 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-21 18:41:58,840 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-21 18:41:58,840 INFO L87 Difference]: Start difference. First operand 67 states and 73 transitions. Second operand 4 states. [2018-09-21 18:41:58,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:41:58,887 INFO L93 Difference]: Finished difference Result 68 states and 74 transitions. [2018-09-21 18:41:58,888 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-21 18:41:58,888 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 56 [2018-09-21 18:41:58,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:41:58,889 INFO L225 Difference]: With dead ends: 68 [2018-09-21 18:41:58,889 INFO L226 Difference]: Without dead ends: 68 [2018-09-21 18:41:58,889 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-21 18:41:58,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2018-09-21 18:41:58,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 65. [2018-09-21 18:41:58,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2018-09-21 18:41:58,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 70 transitions. [2018-09-21 18:41:58,894 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 70 transitions. Word has length 56 [2018-09-21 18:41:58,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:41:58,895 INFO L480 AbstractCegarLoop]: Abstraction has 65 states and 70 transitions. [2018-09-21 18:41:58,895 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-21 18:41:58,895 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 70 transitions. [2018-09-21 18:41:58,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2018-09-21 18:41:58,897 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:41:58,897 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-21 18:41:58,897 INFO L423 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:41:58,897 INFO L82 PathProgramCache]: Analyzing trace with hash -1409894658, now seen corresponding path program 1 times [2018-09-21 18:41:58,898 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-21 18:41:58,898 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 18:41:58,908 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:41:58,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-21 18:41:58,990 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-21 18:41:59,098 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 18:41:59,106 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 18:41:59,106 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-21 18:41:59,110 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:41:59,128 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 18:41:59,128 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:24, output treesize:20 [2018-09-21 18:41:59,199 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 18:41:59,211 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 18:41:59,212 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-09-21 18:41:59,230 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-21 18:41:59,305 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 18:41:59,306 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:29, output treesize:14 [2018-09-21 18:41:59,665 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 18:41:59,665 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-21 18:41:59,675 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-21 18:41:59,676 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2018-09-21 18:41:59,676 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-09-21 18:41:59,676 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-09-21 18:41:59,676 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2018-09-21 18:41:59,677 INFO L87 Difference]: Start difference. First operand 65 states and 70 transitions. Second operand 10 states. [2018-09-21 18:42:03,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-21 18:42:03,352 INFO L93 Difference]: Finished difference Result 67 states and 69 transitions. [2018-09-21 18:42:03,353 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-09-21 18:42:03,353 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 57 [2018-09-21 18:42:03,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-21 18:42:03,354 INFO L225 Difference]: With dead ends: 67 [2018-09-21 18:42:03,354 INFO L226 Difference]: Without dead ends: 57 [2018-09-21 18:42:03,356 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2018-09-21 18:42:03,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2018-09-21 18:42:03,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2018-09-21 18:42:03,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2018-09-21 18:42:03,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 58 transitions. [2018-09-21 18:42:03,359 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 58 transitions. Word has length 57 [2018-09-21 18:42:03,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-21 18:42:03,360 INFO L480 AbstractCegarLoop]: Abstraction has 57 states and 58 transitions. [2018-09-21 18:42:03,360 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-09-21 18:42:03,360 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 58 transitions. [2018-09-21 18:42:03,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2018-09-21 18:42:03,362 INFO L368 BasicCegarLoop]: Found error trace [2018-09-21 18:42:03,362 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-21 18:42:03,363 INFO L423 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-21 18:42:03,363 INFO L82 PathProgramCache]: Analyzing trace with hash -245978473, now seen corresponding path program 1 times [2018-09-21 18:42:03,363 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-21 18:42:03,363 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 18:42:03,369 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-21 18:42:03,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-09-21 18:42:03,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-09-21 18:42:03,818 INFO L443 BasicCegarLoop]: Counterexample might be feasible [2018-09-21 18:42:03,917 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.09 06:42:03 BoogieIcfgContainer [2018-09-21 18:42:03,917 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-21 18:42:03,918 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-09-21 18:42:03,918 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-09-21 18:42:03,919 INFO L276 PluginConnector]: Witness Printer initialized [2018-09-21 18:42:03,920 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 06:41:39" (3/4) ... [2018-09-21 18:42:03,932 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-09-21 18:42:04,076 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2018-09-21 18:42:04,076 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-09-21 18:42:04,077 INFO L168 Benchmark]: Toolchain (without parser) took 25672.74 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 160.4 MB). Free memory was 950.5 MB in the beginning and 951.0 MB in the end (delta: -483.1 kB). Peak memory consumption was 159.9 MB. Max. memory is 11.5 GB. [2018-09-21 18:42:04,079 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-09-21 18:42:04,079 INFO L168 Benchmark]: CACSL2BoogieTranslator took 434.13 ms. Allocated memory is still 1.0 GB. Free memory was 950.5 MB in the beginning and 939.8 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-09-21 18:42:04,080 INFO L168 Benchmark]: Boogie Preprocessor took 50.22 ms. Allocated memory is still 1.0 GB. Free memory was 939.8 MB in the beginning and 934.4 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-09-21 18:42:04,080 INFO L168 Benchmark]: RCFGBuilder took 795.60 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 79.2 MB). Free memory was 934.4 MB in the beginning and 1.0 GB in the end (delta: -106.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 11.5 GB. [2018-09-21 18:42:04,081 INFO L168 Benchmark]: TraceAbstraction took 24226.21 ms. Allocated memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: 81.3 MB). Free memory was 1.0 GB in the beginning and 951.0 MB in the end (delta: 89.4 MB). Peak memory consumption was 170.7 MB. Max. memory is 11.5 GB. [2018-09-21 18:42:04,083 INFO L168 Benchmark]: Witness Printer took 158.07 ms. Allocated memory is still 1.2 GB. Free memory was 951.0 MB in the beginning and 951.0 MB in the end (delta: 24 B). Peak memory consumption was 24 B. Max. memory is 11.5 GB. [2018-09-21 18:42:04,087 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 434.13 ms. Allocated memory is still 1.0 GB. Free memory was 950.5 MB in the beginning and 939.8 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 50.22 ms. Allocated memory is still 1.0 GB. Free memory was 939.8 MB in the beginning and 934.4 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 795.60 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 79.2 MB). Free memory was 934.4 MB in the beginning and 1.0 GB in the end (delta: -106.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 24226.21 ms. Allocated memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: 81.3 MB). Free memory was 1.0 GB in the beginning and 951.0 MB in the end (delta: 89.4 MB). Peak memory consumption was 170.7 MB. Max. memory is 11.5 GB. * Witness Printer took 158.07 ms. Allocated memory is still 1.2 GB. Free memory was 951.0 MB in the beginning and 951.0 MB in the end (delta: 24 B). Peak memory consumption was 24 B. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 85]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L79] double x = 0.0; [L80] double y = -0.0; VAL [x=0.0, y=0.0] [L81] CALL, EXPR fmax_double(x, y) VAL [\old(x)=0.0, \old(y)=0.0] [L52] CALL, EXPR __fpclassify_double(x) VAL [\old(x)=0.0] [L24] __uint32_t msw, lsw; VAL [\old(x)=0.0, x=0.0] [L27] FCALL ieee_double_shape_type ew_u; VAL [\old(x)=0.0, ew_u={2:0}, x=0.0] [L28] FCALL ew_u.value = (x) VAL [\old(x)=0.0, ew_u={2:0}, x=0.0] [L29] EXPR, FCALL ew_u.parts.msw VAL [\old(x)=0.0, ew_u={2:0}, ew_u.parts.msw=0, x=0.0] [L29] (msw) = ew_u.parts.msw VAL [\old(x)=0.0, ew_u={2:0}, ew_u.parts.msw=0, msw=0, x=0.0] [L29] FCALL (msw) = ew_u.parts.msw VAL [(msw) = ew_u.parts.msw=0.0, \old(x)=0.0, ew_u={2:0}, ew_u.parts.msw=0, msw=0, x=0.0] [L30] EXPR, FCALL ew_u.parts.lsw VAL [\old(x)=0.0, ew_u={2:0}, ew_u.parts.lsw=0, msw=0, x=0.0] [L30] (lsw) = ew_u.parts.lsw VAL [\old(x)=0.0, ew_u={2:0}, ew_u.parts.lsw=0, lsw=0, msw=0, x=0.0] [L30] FCALL (lsw) = ew_u.parts.lsw VAL [(lsw) = ew_u.parts.lsw=0.0, \old(x)=0.0, ew_u={2:0}, ew_u.parts.lsw=0, lsw=0, msw=0, x=0.0] [L31] COND FALSE !(0) VAL [\old(x)=0.0, lsw=0, msw=0, x=0.0] [L33-L34] COND TRUE (msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000) [L35] RET return 2; VAL [\old(x)=0.0, \result=2, lsw=0, msw=0, x=0.0] [L52] EXPR __fpclassify_double(x) VAL [\old(x)=0.0, \old(y)=0.0, __fpclassify_double(x)=2, x=0.0, y=0.0] [L52] COND FALSE !(__fpclassify_double(x) == 0) [L54] CALL, EXPR __fpclassify_double(y) VAL [\old(x)=0.0] [L24] __uint32_t msw, lsw; VAL [\old(x)=0.0, x=0.0] [L27] FCALL ieee_double_shape_type ew_u; VAL [\old(x)=0.0, ew_u={3:0}, x=0.0] [L28] FCALL ew_u.value = (x) VAL [\old(x)=0.0, ew_u={3:0}, x=0.0] [L29] EXPR, FCALL ew_u.parts.msw VAL [\old(x)=0.0, ew_u={3:0}, ew_u.parts.msw=-2147483648, x=0.0] [L29] (msw) = ew_u.parts.msw VAL [\old(x)=0.0, ew_u={3:0}, ew_u.parts.msw=-2147483648, msw=-2147483648, x=0.0] [L29] FCALL (msw) = ew_u.parts.msw VAL [(msw) = ew_u.parts.msw=0.0, \old(x)=0.0, ew_u={3:0}, ew_u.parts.msw=-2147483648, msw=-2147483648, x=0.0] [L30] EXPR, FCALL ew_u.parts.lsw VAL [\old(x)=0.0, ew_u={3:0}, ew_u.parts.lsw=0, msw=-2147483648, x=0.0] [L30] (lsw) = ew_u.parts.lsw VAL [\old(x)=0.0, ew_u={3:0}, ew_u.parts.lsw=0, lsw=0, msw=-2147483648, x=0.0] [L30] FCALL (lsw) = ew_u.parts.lsw VAL [(lsw) = ew_u.parts.lsw=0.0, \old(x)=0.0, ew_u={3:0}, ew_u.parts.lsw=0, lsw=0, msw=-2147483648, x=0.0] [L31] COND FALSE !(0) VAL [\old(x)=0.0, lsw=0, msw=-2147483648, x=0.0] [L33-L34] COND TRUE (msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000) [L35] RET return 2; VAL [\old(x)=0.0, \result=2, lsw=0, msw=-2147483648, x=0.0] [L54] EXPR __fpclassify_double(y) VAL [\old(x)=0.0, \old(y)=0.0, __fpclassify_double(y)=2, x=0.0, y=0.0] [L54] COND FALSE !(__fpclassify_double(y) == 0) [L57] COND FALSE, EXPR !(x > y ? x : y) [L57] EXPR x > y ? x : y VAL [\old(x)=0.0, \old(y)=0.0, x=0.0, x > y ? x : y=0.0, y=0.0] [L57] RET return x > y ? x : y; [L81] EXPR fmax_double(x, y) VAL [fmax_double(x, y)=0.0, x=0.0, y=0.0] [L81] double res = fmax_double(x, y); [L84] EXPR res == 0.0 && __signbit_double(res) == 0 VAL [res=0.0, res == 0.0 && __signbit_double(res) == 0=1, x=0.0, y=0.0] [L84] COND TRUE, EXPR res == 0.0 && __signbit_double(res) == 0 VAL [res=0.0, res == 0.0 && __signbit_double(res) == 0=1, x=0.0, y=0.0] [L84] CALL, EXPR __signbit_double(res) VAL [\old(x)=0.0] [L61] __uint32_t msw; VAL [\old(x)=0.0, x=0.0] [L64] FCALL ieee_double_shape_type gh_u; VAL [\old(x)=0.0, gh_u={3:0}, x=0.0] [L65] FCALL gh_u.value = (x) VAL [\old(x)=0.0, gh_u={3:0}, x=0.0] [L66] EXPR, FCALL gh_u.parts.msw VAL [\old(x)=0.0, gh_u={3:0}, gh_u.parts.msw=-2147483648, x=0.0] [L66] (msw) = gh_u.parts.msw VAL [\old(x)=0.0, gh_u={3:0}, gh_u.parts.msw=-2147483648, msw=2147483648, x=0.0] [L66] FCALL (msw) = gh_u.parts.msw VAL [(msw) = gh_u.parts.msw=0.0, \old(x)=0.0, gh_u={3:0}, gh_u.parts.msw=-2147483648, msw=2147483648, x=0.0] [L67] COND FALSE !(0) VAL [\old(x)=0.0, msw=2147483648, x=0.0] [L69] RET return (msw & 0x80000000) != 0; VAL [\old(x)=0.0, \result=1, msw=2147483648, x=0.0] [L84] EXPR __signbit_double(res) VAL [__signbit_double(res)=1, res=0.0, res == 0.0 && __signbit_double(res) == 0=1, x=0.0, y=0.0] [L84] EXPR res == 0.0 && __signbit_double(res) == 0 VAL [__signbit_double(res)=1, res=0.0, res == 0.0 && __signbit_double(res) == 0=0, x=0.0, y=0.0] [L84] COND TRUE !(res == 0.0 && __signbit_double(res) == 0) [L85] __VERIFIER_error() VAL [res=0.0, x=0.0, y=0.0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 62 locations, 1 error locations. UNSAFE Result, 24.1s OverallTime, 12 OverallIterations, 2 TraceHistogramMax, 18.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 647 SDtfs, 241 SDslu, 2277 SDs, 0 SdLazy, 843 SolverSat, 30 SolverUnsat, 2 SolverUnknown, 0 SolverNotchecked, 14.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 523 GetRequests, 440 SyntacticMatches, 1 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 5.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=67occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 11 MinimizatonAttempts, 8 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 3.7s InterpolantComputationTime, 569 NumberOfCodeBlocks, 569 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 486 ConstructedInterpolants, 76 QuantifiedInterpolants, 96909 SizeOfPredicates, 39 NumberOfNonLiveVariables, 1085 ConjunctsInSsa, 69 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 PerfectInterpolantSequences, 108/108 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...