./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_1232a_true-unreach-call.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 1dbac8bc Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_521fb4d3-e20b-49ce-8493-3e25d8272380/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_521fb4d3-e20b-49ce-8493-3e25d8272380/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_521fb4d3-e20b-49ce-8493-3e25d8272380/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_521fb4d3-e20b-49ce-8493-3e25d8272380/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1232a_true-unreach-call.c -s /tmp/vcloud-vcloud-master/worker/working_dir_521fb4d3-e20b-49ce-8493-3e25d8272380/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_521fb4d3-e20b-49ce-8493-3e25d8272380/bin-2019/uautomizer --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 cd0c8f7b91fa815011541d5ffb41102d34132ba8 ............................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_521fb4d3-e20b-49ce-8493-3e25d8272380/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_521fb4d3-e20b-49ce-8493-3e25d8272380/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_521fb4d3-e20b-49ce-8493-3e25d8272380/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_521fb4d3-e20b-49ce-8493-3e25d8272380/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1232a_true-unreach-call.c -s /tmp/vcloud-vcloud-master/worker/working_dir_521fb4d3-e20b-49ce-8493-3e25d8272380/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_521fb4d3-e20b-49ce-8493-3e25d8272380/bin-2019/uautomizer --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 cd0c8f7b91fa815011541d5ffb41102d34132ba8 ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-1dbac8b [2018-10-26 20:27:01,523 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-26 20:27:01,525 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-26 20:27:01,541 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-26 20:27:01,541 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-26 20:27:01,542 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-26 20:27:01,543 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-26 20:27:01,544 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-26 20:27:01,545 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-26 20:27:01,546 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-26 20:27:01,547 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-26 20:27:01,547 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-26 20:27:01,551 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-26 20:27:01,554 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-26 20:27:01,555 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-26 20:27:01,556 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-26 20:27:01,556 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-26 20:27:01,558 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-26 20:27:01,559 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-26 20:27:01,573 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-26 20:27:01,574 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-26 20:27:01,575 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-26 20:27:01,576 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-26 20:27:01,577 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-26 20:27:01,577 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-26 20:27:01,577 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-26 20:27:01,578 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-26 20:27:01,579 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-26 20:27:01,579 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-26 20:27:01,580 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-26 20:27:01,580 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-26 20:27:01,581 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-26 20:27:01,581 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-26 20:27:01,581 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-26 20:27:01,582 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-26 20:27:01,583 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-26 20:27:01,583 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_521fb4d3-e20b-49ce-8493-3e25d8272380/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-10-26 20:27:01,597 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-26 20:27:01,599 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-26 20:27:01,600 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-26 20:27:01,600 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-26 20:27:01,601 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-26 20:27:01,601 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-26 20:27:01,601 INFO L133 SettingsManager]: * Use SBE=true [2018-10-26 20:27:01,602 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-26 20:27:01,603 INFO L133 SettingsManager]: * sizeof long=4 [2018-10-26 20:27:01,603 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-26 20:27:01,603 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-10-26 20:27:01,604 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-26 20:27:01,604 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-26 20:27:01,604 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-26 20:27:01,604 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-26 20:27:01,604 INFO L133 SettingsManager]: * sizeof long double=12 [2018-10-26 20:27:01,604 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-26 20:27:01,604 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-26 20:27:01,605 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-26 20:27:01,605 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-26 20:27:01,605 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-26 20:27:01,605 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-26 20:27:01,605 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-26 20:27:01,605 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-26 20:27:01,605 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-26 20:27:01,605 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-26 20:27:01,606 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-26 20:27:01,606 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-26 20:27:01,606 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-26 20:27:01,606 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 -> /tmp/vcloud-vcloud-master/worker/working_dir_521fb4d3-e20b-49ce-8493-3e25d8272380/bin-2019/uautomizer 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 -> cd0c8f7b91fa815011541d5ffb41102d34132ba8 [2018-10-26 20:27:01,641 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-26 20:27:01,651 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-26 20:27:01,654 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-26 20:27:01,656 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-26 20:27:01,656 INFO L276 PluginConnector]: CDTParser initialized [2018-10-26 20:27:01,657 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_521fb4d3-e20b-49ce-8493-3e25d8272380/bin-2019/uautomizer/../../sv-benchmarks/c/float-newlib/float_req_bl_1232a_true-unreach-call.c [2018-10-26 20:27:01,716 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_521fb4d3-e20b-49ce-8493-3e25d8272380/bin-2019/uautomizer/data/e5b9fd938/347b589621994a1290f38cac581d99be/FLAG3d8710d67 [2018-10-26 20:27:02,096 INFO L298 CDTParser]: Found 1 translation units. [2018-10-26 20:27:02,097 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_521fb4d3-e20b-49ce-8493-3e25d8272380/sv-benchmarks/c/float-newlib/float_req_bl_1232a_true-unreach-call.c [2018-10-26 20:27:02,102 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_521fb4d3-e20b-49ce-8493-3e25d8272380/bin-2019/uautomizer/data/e5b9fd938/347b589621994a1290f38cac581d99be/FLAG3d8710d67 [2018-10-26 20:27:02,114 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_521fb4d3-e20b-49ce-8493-3e25d8272380/bin-2019/uautomizer/data/e5b9fd938/347b589621994a1290f38cac581d99be [2018-10-26 20:27:02,116 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-26 20:27:02,117 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-26 20:27:02,118 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-26 20:27:02,118 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-26 20:27:02,122 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-26 20:27:02,123 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 08:27:02" (1/1) ... [2018-10-26 20:27:02,125 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1814e7bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:27:02, skipping insertion in model container [2018-10-26 20:27:02,126 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 08:27:02" (1/1) ... [2018-10-26 20:27:02,135 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-26 20:27:02,155 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-26 20:27:02,292 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 20:27:02,295 INFO L189 MainTranslator]: Completed pre-run [2018-10-26 20:27:02,318 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 20:27:02,337 INFO L193 MainTranslator]: Completed translation [2018-10-26 20:27:02,338 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:27:02 WrapperNode [2018-10-26 20:27:02,338 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-26 20:27:02,338 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-26 20:27:02,338 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-26 20:27:02,339 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-26 20:27:02,355 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:27:02" (1/1) ... [2018-10-26 20:27:02,355 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:27:02" (1/1) ... [2018-10-26 20:27:02,365 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:27:02" (1/1) ... [2018-10-26 20:27:02,365 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:27:02" (1/1) ... [2018-10-26 20:27:02,373 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:27:02" (1/1) ... [2018-10-26 20:27:02,380 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:27:02" (1/1) ... [2018-10-26 20:27:02,381 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:27:02" (1/1) ... [2018-10-26 20:27:02,383 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-26 20:27:02,384 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-26 20:27:02,384 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-26 20:27:02,384 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-26 20:27:02,386 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:27:02" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_521fb4d3-e20b-49ce-8493-3e25d8272380/bin-2019/uautomizer/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 [2018-10-26 20:27:02,539 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-26 20:27:02,539 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-26 20:27:02,540 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_float [2018-10-26 20:27:02,540 INFO L138 BoogieDeclarations]: Found implementation of procedure fmin_float [2018-10-26 20:27:02,540 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_float [2018-10-26 20:27:02,540 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-26 20:27:02,540 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-10-26 20:27:02,540 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2018-10-26 20:27:02,540 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_float [2018-10-26 20:27:02,540 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-10-26 20:27:02,541 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2018-10-26 20:27:02,541 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-10-26 20:27:02,541 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-10-26 20:27:02,541 INFO L130 BoogieDeclarations]: Found specification of procedure fmin_float [2018-10-26 20:27:02,541 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_float [2018-10-26 20:27:02,541 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-26 20:27:02,541 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-26 20:27:02,541 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-26 20:27:02,541 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real [2018-10-26 20:27:02,542 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2018-10-26 20:27:02,542 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2018-10-26 20:27:02,542 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-10-26 20:27:02,995 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-26 20:27:02,995 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 08:27:02 BoogieIcfgContainer [2018-10-26 20:27:02,995 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-26 20:27:02,996 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-26 20:27:02,996 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-26 20:27:02,999 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-26 20:27:02,999 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 08:27:02" (1/3) ... [2018-10-26 20:27:03,001 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fad490c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 08:27:03, skipping insertion in model container [2018-10-26 20:27:03,001 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:27:02" (2/3) ... [2018-10-26 20:27:03,001 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fad490c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 08:27:03, skipping insertion in model container [2018-10-26 20:27:03,001 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 08:27:02" (3/3) ... [2018-10-26 20:27:03,003 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_1232a_true-unreach-call.c [2018-10-26 20:27:03,012 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-26 20:27:03,020 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-26 20:27:03,034 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-26 20:27:03,062 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-26 20:27:03,063 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-26 20:27:03,063 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-26 20:27:03,063 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-26 20:27:03,063 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-26 20:27:03,063 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-26 20:27:03,063 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-26 20:27:03,063 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-26 20:27:03,063 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-26 20:27:03,081 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states. [2018-10-26 20:27:03,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-10-26 20:27:03,087 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 20:27:03,088 INFO L375 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] [2018-10-26 20:27:03,090 INFO L424 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 20:27:03,095 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 20:27:03,095 INFO L82 PathProgramCache]: Analyzing trace with hash 969493283, now seen corresponding path program 1 times [2018-10-26 20:27:03,097 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 20:27:03,098 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 20:27:03,146 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 20:27:03,147 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 20:27:03,147 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 20:27:03,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 20:27:03,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 20:27:03,225 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 20:27:03,225 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-26 20:27:03,229 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-10-26 20:27:03,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-10-26 20:27:03,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-10-26 20:27:03,241 INFO L87 Difference]: Start difference. First operand 60 states. Second operand 2 states. [2018-10-26 20:27:03,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 20:27:03,264 INFO L93 Difference]: Finished difference Result 111 states and 139 transitions. [2018-10-26 20:27:03,264 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-10-26 20:27:03,265 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 22 [2018-10-26 20:27:03,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 20:27:03,275 INFO L225 Difference]: With dead ends: 111 [2018-10-26 20:27:03,275 INFO L226 Difference]: Without dead ends: 56 [2018-10-26 20:27:03,278 INFO L605 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 [2018-10-26 20:27:03,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2018-10-26 20:27:03,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2018-10-26 20:27:03,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2018-10-26 20:27:03,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 64 transitions. [2018-10-26 20:27:03,317 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 64 transitions. Word has length 22 [2018-10-26 20:27:03,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 20:27:03,318 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 64 transitions. [2018-10-26 20:27:03,318 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-10-26 20:27:03,318 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 64 transitions. [2018-10-26 20:27:03,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-10-26 20:27:03,320 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 20:27:03,320 INFO L375 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] [2018-10-26 20:27:03,320 INFO L424 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 20:27:03,320 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 20:27:03,321 INFO L82 PathProgramCache]: Analyzing trace with hash -228670553, now seen corresponding path program 1 times [2018-10-26 20:27:03,321 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 20:27:03,321 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 20:27:03,322 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 20:27:03,322 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 20:27:03,322 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 20:27:03,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 20:27:03,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 20:27:03,427 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 20:27:03,427 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 20:27:03,431 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 20:27:03,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 20:27:03,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-10-26 20:27:03,432 INFO L87 Difference]: Start difference. First operand 56 states and 64 transitions. Second operand 4 states. [2018-10-26 20:27:03,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 20:27:03,515 INFO L93 Difference]: Finished difference Result 83 states and 93 transitions. [2018-10-26 20:27:03,516 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 20:27:03,516 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 31 [2018-10-26 20:27:03,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 20:27:03,518 INFO L225 Difference]: With dead ends: 83 [2018-10-26 20:27:03,518 INFO L226 Difference]: Without dead ends: 60 [2018-10-26 20:27:03,519 INFO L605 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 [2018-10-26 20:27:03,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2018-10-26 20:27:03,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2018-10-26 20:27:03,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2018-10-26 20:27:03,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 69 transitions. [2018-10-26 20:27:03,528 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 69 transitions. Word has length 31 [2018-10-26 20:27:03,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 20:27:03,529 INFO L481 AbstractCegarLoop]: Abstraction has 60 states and 69 transitions. [2018-10-26 20:27:03,529 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 20:27:03,530 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 69 transitions. [2018-10-26 20:27:03,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-10-26 20:27:03,531 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 20:27:03,531 INFO L375 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] [2018-10-26 20:27:03,532 INFO L424 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 20:27:03,532 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 20:27:03,532 INFO L82 PathProgramCache]: Analyzing trace with hash 738637230, now seen corresponding path program 1 times [2018-10-26 20:27:03,532 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 20:27:03,532 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 20:27:03,533 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 20:27:03,534 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 20:27:03,534 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 20:27:03,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 20:27:03,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 20:27:03,638 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 20:27:03,638 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 20:27:03,638 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 20:27:03,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 20:27:03,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-10-26 20:27:03,639 INFO L87 Difference]: Start difference. First operand 60 states and 69 transitions. Second operand 4 states. [2018-10-26 20:27:03,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 20:27:03,721 INFO L93 Difference]: Finished difference Result 87 states and 98 transitions. [2018-10-26 20:27:03,722 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 20:27:03,722 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 34 [2018-10-26 20:27:03,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 20:27:03,724 INFO L225 Difference]: With dead ends: 87 [2018-10-26 20:27:03,724 INFO L226 Difference]: Without dead ends: 64 [2018-10-26 20:27:03,725 INFO L605 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 [2018-10-26 20:27:03,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2018-10-26 20:27:03,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 60. [2018-10-26 20:27:03,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2018-10-26 20:27:03,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 69 transitions. [2018-10-26 20:27:03,732 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 69 transitions. Word has length 34 [2018-10-26 20:27:03,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 20:27:03,733 INFO L481 AbstractCegarLoop]: Abstraction has 60 states and 69 transitions. [2018-10-26 20:27:03,733 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 20:27:03,733 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 69 transitions. [2018-10-26 20:27:03,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-10-26 20:27:03,734 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 20:27:03,734 INFO L375 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] [2018-10-26 20:27:03,734 INFO L424 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 20:27:03,734 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 20:27:03,734 INFO L82 PathProgramCache]: Analyzing trace with hash -1058314129, now seen corresponding path program 1 times [2018-10-26 20:27:03,734 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 20:27:03,734 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 20:27:03,735 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 20:27:03,737 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 20:27:03,737 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 20:27:03,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-26 20:27:03,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-26 20:27:03,797 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-10-26 20:27:03,828 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.10 08:27:03 BoogieIcfgContainer [2018-10-26 20:27:03,828 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-26 20:27:03,829 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-10-26 20:27:03,829 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-10-26 20:27:03,829 INFO L276 PluginConnector]: Witness Printer initialized [2018-10-26 20:27:03,829 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 08:27:02" (3/4) ... [2018-10-26 20:27:03,834 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-10-26 20:27:03,834 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-10-26 20:27:03,835 INFO L168 Benchmark]: Toolchain (without parser) took 1718.15 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 166.7 MB). Free memory was 960.2 MB in the beginning and 1.1 GB in the end (delta: -136.7 MB). Peak memory consumption was 30.0 MB. Max. memory is 11.5 GB. [2018-10-26 20:27:03,836 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-26 20:27:03,836 INFO L168 Benchmark]: CACSL2BoogieTranslator took 220.24 ms. Allocated memory is still 1.0 GB. Free memory was 960.2 MB in the beginning and 949.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-10-26 20:27:03,837 INFO L168 Benchmark]: Boogie Preprocessor took 45.50 ms. Allocated memory is still 1.0 GB. Free memory was 949.5 MB in the beginning and 946.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-10-26 20:27:03,838 INFO L168 Benchmark]: RCFGBuilder took 611.27 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 166.7 MB). Free memory was 946.8 MB in the beginning and 1.1 GB in the end (delta: -195.8 MB). Peak memory consumption was 22.7 MB. Max. memory is 11.5 GB. [2018-10-26 20:27:03,838 INFO L168 Benchmark]: TraceAbstraction took 832.22 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 45.6 MB). Peak memory consumption was 45.6 MB. Max. memory is 11.5 GB. [2018-10-26 20:27:03,839 INFO L168 Benchmark]: Witness Printer took 5.35 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-26 20:27:03,845 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 220.24 ms. Allocated memory is still 1.0 GB. Free memory was 960.2 MB in the beginning and 949.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 45.50 ms. Allocated memory is still 1.0 GB. Free memory was 949.5 MB in the beginning and 946.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 611.27 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 166.7 MB). Free memory was 946.8 MB in the beginning and 1.1 GB in the end (delta: -195.8 MB). Peak memory consumption was 22.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 832.22 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 45.6 MB). Peak memory consumption was 45.6 MB. Max. memory is 11.5 GB. * Witness Printer took 5.35 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 70]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 69, overapproximation of someUnaryFLOAToperation at line 65. Possible FailurePath: [L64] float x = 0.0f; [L65] float y = -0.0f; VAL [x=0] [L66] CALL, EXPR fmin_float(x, y) VAL [\old(x)=0, \old(y)=2139095043] [L36] CALL, EXPR __fpclassify_float(x) VAL [\old(x)=0] [L13] __uint32_t w; VAL [\old(x)=0, x=0] [L16] FCALL ieee_float_shape_type gf_u; VAL [\old(x)=0, gf_u={2139095046:0}, x=0] [L17] FCALL gf_u.value = (x) VAL [\old(x)=0, gf_u={2139095046:0}, x=0] [L18] EXPR, FCALL gf_u.word VAL [\old(x)=0, gf_u={2139095046:0}, gf_u.word=2139095041, x=0] [L18] (w) = gf_u.word VAL [(w) = gf_u.word=2139095044, \old(x)=0, gf_u={2139095046:0}, gf_u.word=2139095041, w=2139095041, x=0] [L19] COND FALSE !(0) VAL [\old(x)=0, w=2139095041, x=0] [L21] COND FALSE !(w == 0x00000000 || w == 0x80000000) VAL [\old(x)=0, w=2139095041, x=0] [L23-L24] COND FALSE !((w >= 0x00800000 && w <= 0x7f7fffff) || (w >= 0x80800000 && w <= 0xff7fffff)) VAL [\old(x)=0, w=2139095041, x=0] [L26-L27] COND FALSE !((w >= 0x00000001 && w <= 0x007fffff) || (w >= 0x80000001 && w <= 0x807fffff)) VAL [\old(x)=0, w=2139095041, x=0] [L29] COND FALSE !(w == 0x7f800000 || w == 0xff800000) [L32] RET return 0; VAL [\old(x)=0, \result=0, w=2139095041, x=0] [L36] EXPR __fpclassify_float(x) VAL [\old(x)=0, \old(y)=2139095043, __fpclassify_float(x)=0, x=0, y=2139095043] [L36] COND TRUE __fpclassify_float(x) == 0 [L37] RET return y; VAL [\old(x)=0, \old(y)=2139095043, \result=2139095043, x=0, y=2139095043] [L66] EXPR fmin_float(x, y) VAL [fmin_float(x, y)=2139095043, x=0, y=2139095043] [L66] float res = fmin_float(x, y); [L69] EXPR res == -0.0f && __signbit_float(res) == 1 VAL [res=2139095043, res == -0.0f && __signbit_float(res) == 1=0, x=0, y=2139095043] [L69] COND TRUE !(res == -0.0f && __signbit_float(res) == 1) [L70] __VERIFIER_error() VAL [res=2139095043, x=0, y=2139095043] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 60 locations, 1 error locations. UNSAFE Result, 0.7s OverallTime, 4 OverallIterations, 1 TraceHistogramMax, 0.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 197 SDtfs, 0 SDslu, 242 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=60occurred 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, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 121 NumberOfCodeBlocks, 121 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 84 ConstructedInterpolants, 0 QuantifiedInterpolants, 2934 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 0.1.23-1dbac8b [2018-10-26 20:27:05,761 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-26 20:27:05,762 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-26 20:27:05,772 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-26 20:27:05,772 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-26 20:27:05,773 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-26 20:27:05,774 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-26 20:27:05,775 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-26 20:27:05,777 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-26 20:27:05,777 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-26 20:27:05,778 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-26 20:27:05,778 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-26 20:27:05,779 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-26 20:27:05,780 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-26 20:27:05,781 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-26 20:27:05,782 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-26 20:27:05,782 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-26 20:27:05,784 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-26 20:27:05,786 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-26 20:27:05,787 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-26 20:27:05,788 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-26 20:27:05,789 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-26 20:27:05,791 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-26 20:27:05,791 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-26 20:27:05,791 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-26 20:27:05,792 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-26 20:27:05,793 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-26 20:27:05,794 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-26 20:27:05,794 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-26 20:27:05,795 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-26 20:27:05,795 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-26 20:27:05,796 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-26 20:27:05,797 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-26 20:27:05,797 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-26 20:27:05,797 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-26 20:27:05,798 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-26 20:27:05,798 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_521fb4d3-e20b-49ce-8493-3e25d8272380/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2018-10-26 20:27:05,810 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-26 20:27:05,810 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-26 20:27:05,811 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-26 20:27:05,811 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-26 20:27:05,812 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-26 20:27:05,812 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-26 20:27:05,812 INFO L133 SettingsManager]: * Use SBE=true [2018-10-26 20:27:05,812 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-26 20:27:05,813 INFO L133 SettingsManager]: * sizeof long=4 [2018-10-26 20:27:05,813 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-10-26 20:27:05,813 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-26 20:27:05,813 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-26 20:27:05,813 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-26 20:27:05,813 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-26 20:27:05,813 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-10-26 20:27:05,813 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-10-26 20:27:05,814 INFO L133 SettingsManager]: * sizeof long double=12 [2018-10-26 20:27:05,814 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-26 20:27:05,814 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-26 20:27:05,814 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-26 20:27:05,814 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-26 20:27:05,814 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-26 20:27:05,814 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-26 20:27:05,815 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-26 20:27:05,815 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-26 20:27:05,815 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-26 20:27:05,815 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-26 20:27:05,815 INFO L133 SettingsManager]: * Trace refinement strategy=WOLF [2018-10-26 20:27:05,815 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-26 20:27:05,818 INFO L133 SettingsManager]: * Command for external solver=cvc4nyu --tear-down-incremental --rewrite-divk --print-success --lang smt [2018-10-26 20:27:05,818 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-10-26 20:27:05,818 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 -> /tmp/vcloud-vcloud-master/worker/working_dir_521fb4d3-e20b-49ce-8493-3e25d8272380/bin-2019/uautomizer 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 -> cd0c8f7b91fa815011541d5ffb41102d34132ba8 [2018-10-26 20:27:05,850 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-26 20:27:05,860 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-26 20:27:05,862 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-26 20:27:05,864 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-26 20:27:05,864 INFO L276 PluginConnector]: CDTParser initialized [2018-10-26 20:27:05,865 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_521fb4d3-e20b-49ce-8493-3e25d8272380/bin-2019/uautomizer/../../sv-benchmarks/c/float-newlib/float_req_bl_1232a_true-unreach-call.c [2018-10-26 20:27:05,913 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_521fb4d3-e20b-49ce-8493-3e25d8272380/bin-2019/uautomizer/data/68fc66e14/9464eb61cbed43d9888956cf29993094/FLAG7ac8733f3 [2018-10-26 20:27:06,301 INFO L298 CDTParser]: Found 1 translation units. [2018-10-26 20:27:06,301 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_521fb4d3-e20b-49ce-8493-3e25d8272380/sv-benchmarks/c/float-newlib/float_req_bl_1232a_true-unreach-call.c [2018-10-26 20:27:06,307 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_521fb4d3-e20b-49ce-8493-3e25d8272380/bin-2019/uautomizer/data/68fc66e14/9464eb61cbed43d9888956cf29993094/FLAG7ac8733f3 [2018-10-26 20:27:06,320 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_521fb4d3-e20b-49ce-8493-3e25d8272380/bin-2019/uautomizer/data/68fc66e14/9464eb61cbed43d9888956cf29993094 [2018-10-26 20:27:06,322 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-26 20:27:06,323 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-26 20:27:06,324 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-26 20:27:06,325 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-26 20:27:06,330 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-26 20:27:06,330 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 08:27:06" (1/1) ... [2018-10-26 20:27:06,333 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5356465f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:27:06, skipping insertion in model container [2018-10-26 20:27:06,333 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 08:27:06" (1/1) ... [2018-10-26 20:27:06,342 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-26 20:27:06,363 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-26 20:27:06,551 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 20:27:06,556 INFO L189 MainTranslator]: Completed pre-run [2018-10-26 20:27:06,584 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 20:27:06,604 INFO L193 MainTranslator]: Completed translation [2018-10-26 20:27:06,605 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:27:06 WrapperNode [2018-10-26 20:27:06,605 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-26 20:27:06,606 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-26 20:27:06,606 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-26 20:27:06,606 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-26 20:27:06,618 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:27:06" (1/1) ... [2018-10-26 20:27:06,618 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:27:06" (1/1) ... [2018-10-26 20:27:06,627 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:27:06" (1/1) ... [2018-10-26 20:27:06,627 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:27:06" (1/1) ... [2018-10-26 20:27:06,635 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:27:06" (1/1) ... [2018-10-26 20:27:06,639 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:27:06" (1/1) ... [2018-10-26 20:27:06,641 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:27:06" (1/1) ... [2018-10-26 20:27:06,643 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-26 20:27:06,644 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-26 20:27:06,644 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-26 20:27:06,644 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-26 20:27:06,645 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:27:06" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_521fb4d3-e20b-49ce-8493-3e25d8272380/bin-2019/uautomizer/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 [2018-10-26 20:27:06,746 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-26 20:27:06,746 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-26 20:27:06,747 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_float [2018-10-26 20:27:06,747 INFO L138 BoogieDeclarations]: Found implementation of procedure fmin_float [2018-10-26 20:27:06,747 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_float [2018-10-26 20:27:06,747 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-26 20:27:06,747 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-10-26 20:27:06,747 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2018-10-26 20:27:06,747 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_float [2018-10-26 20:27:06,747 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-10-26 20:27:06,747 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2018-10-26 20:27:06,748 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2018-10-26 20:27:06,748 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-10-26 20:27:06,748 INFO L130 BoogieDeclarations]: Found specification of procedure fmin_float [2018-10-26 20:27:06,748 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_float [2018-10-26 20:27:06,748 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-26 20:27:06,748 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-26 20:27:06,748 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-26 20:27:06,748 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2018-10-26 20:27:06,748 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2018-10-26 20:27:06,748 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intFLOATTYPE4 [2018-10-26 20:27:06,748 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2018-10-26 20:27:07,098 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-10-26 20:27:07,117 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-10-26 20:27:07,212 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-10-26 20:27:07,227 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-10-26 20:27:07,240 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-26 20:27:07,240 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 08:27:07 BoogieIcfgContainer [2018-10-26 20:27:07,240 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-26 20:27:07,241 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-26 20:27:07,241 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-26 20:27:07,244 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-26 20:27:07,244 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 08:27:06" (1/3) ... [2018-10-26 20:27:07,245 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43604033 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 08:27:07, skipping insertion in model container [2018-10-26 20:27:07,245 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:27:06" (2/3) ... [2018-10-26 20:27:07,245 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43604033 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 08:27:07, skipping insertion in model container [2018-10-26 20:27:07,245 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 08:27:07" (3/3) ... [2018-10-26 20:27:07,247 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_1232a_true-unreach-call.c [2018-10-26 20:27:07,254 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-26 20:27:07,260 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-26 20:27:07,270 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-26 20:27:07,295 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-26 20:27:07,295 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-26 20:27:07,295 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-26 20:27:07,296 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-26 20:27:07,296 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-26 20:27:07,296 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-26 20:27:07,296 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-26 20:27:07,296 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-26 20:27:07,296 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-26 20:27:07,309 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states. [2018-10-26 20:27:07,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-10-26 20:27:07,315 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 20:27:07,316 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 20:27:07,318 INFO L424 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 20:27:07,322 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 20:27:07,323 INFO L82 PathProgramCache]: Analyzing trace with hash 430535463, now seen corresponding path program 1 times [2018-10-26 20:27:07,326 INFO L225 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-10-26 20:27:07,327 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_521fb4d3-e20b-49ce-8493-3e25d8272380/bin-2019/uautomizer/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 [2018-10-26 20:27:07,337 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 20:27:07,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 20:27:07,386 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 20:27:07,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 20:27:07,402 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-10-26 20:27:07,415 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 20:27:07,415 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-26 20:27:07,417 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-10-26 20:27:07,425 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-10-26 20:27:07,426 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-10-26 20:27:07,427 INFO L87 Difference]: Start difference. First operand 58 states. Second operand 2 states. [2018-10-26 20:27:07,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 20:27:07,447 INFO L93 Difference]: Finished difference Result 107 states and 135 transitions. [2018-10-26 20:27:07,447 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-10-26 20:27:07,448 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 21 [2018-10-26 20:27:07,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 20:27:07,456 INFO L225 Difference]: With dead ends: 107 [2018-10-26 20:27:07,457 INFO L226 Difference]: Without dead ends: 54 [2018-10-26 20:27:07,460 INFO L605 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 [2018-10-26 20:27:07,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2018-10-26 20:27:07,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2018-10-26 20:27:07,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2018-10-26 20:27:07,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 62 transitions. [2018-10-26 20:27:07,494 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 62 transitions. Word has length 21 [2018-10-26 20:27:07,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 20:27:07,495 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 62 transitions. [2018-10-26 20:27:07,495 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-10-26 20:27:07,495 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 62 transitions. [2018-10-26 20:27:07,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-10-26 20:27:07,497 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 20:27:07,497 INFO L375 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] [2018-10-26 20:27:07,497 INFO L424 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 20:27:07,497 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 20:27:07,498 INFO L82 PathProgramCache]: Analyzing trace with hash 973147503, now seen corresponding path program 1 times [2018-10-26 20:27:07,498 INFO L225 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-10-26 20:27:07,498 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_521fb4d3-e20b-49ce-8493-3e25d8272380/bin-2019/uautomizer/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2018-10-26 20:27:07,506 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2018-10-26 20:27:07,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 20:27:07,544 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 20:27:07,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 20:27:07,627 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-10-26 20:27:07,637 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 20:27:07,637 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 20:27:07,639 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 20:27:07,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 20:27:07,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-10-26 20:27:07,639 INFO L87 Difference]: Start difference. First operand 54 states and 62 transitions. Second operand 4 states. [2018-10-26 20:27:07,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 20:27:07,752 INFO L93 Difference]: Finished difference Result 80 states and 90 transitions. [2018-10-26 20:27:07,753 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 20:27:07,753 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2018-10-26 20:27:07,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 20:27:07,756 INFO L225 Difference]: With dead ends: 80 [2018-10-26 20:27:07,756 INFO L226 Difference]: Without dead ends: 57 [2018-10-26 20:27:07,757 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-10-26 20:27:07,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2018-10-26 20:27:07,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2018-10-26 20:27:07,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2018-10-26 20:27:07,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 66 transitions. [2018-10-26 20:27:07,768 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 66 transitions. Word has length 30 [2018-10-26 20:27:07,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 20:27:07,769 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 66 transitions. [2018-10-26 20:27:07,769 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 20:27:07,769 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 66 transitions. [2018-10-26 20:27:07,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-10-26 20:27:07,770 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 20:27:07,770 INFO L375 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] [2018-10-26 20:27:07,770 INFO L424 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 20:27:07,770 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 20:27:07,771 INFO L82 PathProgramCache]: Analyzing trace with hash -1744180640, now seen corresponding path program 1 times [2018-10-26 20:27:07,771 INFO L225 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-10-26 20:27:07,771 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_521fb4d3-e20b-49ce-8493-3e25d8272380/bin-2019/uautomizer/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2018-10-26 20:27:07,775 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2018-10-26 20:27:07,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 20:27:07,821 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 20:27:07,973 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 11 treesize of output 8 [2018-10-26 20:27:07,976 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 8 treesize of output 7 [2018-10-26 20:27:07,976 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-26 20:27:07,988 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 20:27:07,997 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-26 20:27:07,997 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:21, output treesize:21 [2018-10-26 20:27:08,052 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 29 treesize of output 21 [2018-10-26 20:27:08,064 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 21 treesize of output 9 [2018-10-26 20:27:08,065 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-26 20:27:08,088 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 20:27:08,109 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-26 20:27:08,110 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:29, output treesize:9 [2018-10-26 20:27:08,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 20:27:08,470 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-10-26 20:27:08,479 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 20:27:08,480 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2018-10-26 20:27:08,480 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-26 20:27:08,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-26 20:27:08,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2018-10-26 20:27:08,481 INFO L87 Difference]: Start difference. First operand 57 states and 66 transitions. Second operand 10 states. [2018-10-26 20:27:09,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 20:27:09,617 INFO L93 Difference]: Finished difference Result 84 states and 97 transitions. [2018-10-26 20:27:09,618 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-26 20:27:09,618 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 31 [2018-10-26 20:27:09,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 20:27:09,620 INFO L225 Difference]: With dead ends: 84 [2018-10-26 20:27:09,620 INFO L226 Difference]: Without dead ends: 56 [2018-10-26 20:27:09,620 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2018-10-26 20:27:09,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2018-10-26 20:27:09,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2018-10-26 20:27:09,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2018-10-26 20:27:09,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 63 transitions. [2018-10-26 20:27:09,629 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 63 transitions. Word has length 31 [2018-10-26 20:27:09,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 20:27:09,629 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 63 transitions. [2018-10-26 20:27:09,629 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-26 20:27:09,629 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 63 transitions. [2018-10-26 20:27:09,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-10-26 20:27:09,630 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 20:27:09,631 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-26 20:27:09,631 INFO L424 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 20:27:09,631 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 20:27:09,632 INFO L82 PathProgramCache]: Analyzing trace with hash -1143554021, now seen corresponding path program 1 times [2018-10-26 20:27:09,632 INFO L225 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-10-26 20:27:09,632 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_521fb4d3-e20b-49ce-8493-3e25d8272380/bin-2019/uautomizer/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 [2018-10-26 20:27:09,645 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 20:27:09,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 20:27:09,690 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 20:27:09,724 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2018-10-26 20:27:09,725 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-10-26 20:27:09,740 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 20:27:09,740 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 20:27:09,741 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 20:27:09,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 20:27:09,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-10-26 20:27:09,742 INFO L87 Difference]: Start difference. First operand 56 states and 63 transitions. Second operand 4 states. [2018-10-26 20:27:09,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 20:27:09,766 INFO L93 Difference]: Finished difference Result 80 states and 88 transitions. [2018-10-26 20:27:09,768 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 20:27:09,768 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 46 [2018-10-26 20:27:09,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 20:27:09,769 INFO L225 Difference]: With dead ends: 80 [2018-10-26 20:27:09,769 INFO L226 Difference]: Without dead ends: 57 [2018-10-26 20:27:09,769 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-10-26 20:27:09,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2018-10-26 20:27:09,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2018-10-26 20:27:09,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2018-10-26 20:27:09,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 64 transitions. [2018-10-26 20:27:09,776 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 64 transitions. Word has length 46 [2018-10-26 20:27:09,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 20:27:09,777 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 64 transitions. [2018-10-26 20:27:09,777 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 20:27:09,777 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 64 transitions. [2018-10-26 20:27:09,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2018-10-26 20:27:09,779 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 20:27:09,779 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-26 20:27:09,780 INFO L424 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 20:27:09,780 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 20:27:09,780 INFO L82 PathProgramCache]: Analyzing trace with hash -113422118, now seen corresponding path program 1 times [2018-10-26 20:27:09,781 INFO L225 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-10-26 20:27:09,781 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_521fb4d3-e20b-49ce-8493-3e25d8272380/bin-2019/uautomizer/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 [2018-10-26 20:27:09,786 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 20:27:09,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 20:27:09,832 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 20:27:09,882 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 11 treesize of output 8 [2018-10-26 20:27:09,885 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 8 treesize of output 7 [2018-10-26 20:27:09,885 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-26 20:27:09,893 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 20:27:09,903 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-26 20:27:09,903 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:21, output treesize:21 [2018-10-26 20:27:09,921 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 29 treesize of output 21 [2018-10-26 20:27:09,924 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 21 treesize of output 9 [2018-10-26 20:27:09,924 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-26 20:27:09,946 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 20:27:09,952 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-26 20:27:09,952 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:29, output treesize:9 [2018-10-26 20:27:10,065 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-10-26 20:27:10,065 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-10-26 20:27:10,082 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 20:27:10,082 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2018-10-26 20:27:10,083 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-26 20:27:10,083 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-26 20:27:10,083 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2018-10-26 20:27:10,084 INFO L87 Difference]: Start difference. First operand 57 states and 64 transitions. Second operand 10 states. [2018-10-26 20:27:10,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 20:27:10,906 INFO L93 Difference]: Finished difference Result 82 states and 90 transitions. [2018-10-26 20:27:10,907 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-26 20:27:10,907 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 47 [2018-10-26 20:27:10,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 20:27:10,908 INFO L225 Difference]: With dead ends: 82 [2018-10-26 20:27:10,909 INFO L226 Difference]: Without dead ends: 51 [2018-10-26 20:27:10,909 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2018-10-26 20:27:10,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2018-10-26 20:27:10,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2018-10-26 20:27:10,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2018-10-26 20:27:10,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 53 transitions. [2018-10-26 20:27:10,915 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 53 transitions. Word has length 47 [2018-10-26 20:27:10,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 20:27:10,915 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 53 transitions. [2018-10-26 20:27:10,915 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-26 20:27:10,916 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 53 transitions. [2018-10-26 20:27:10,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2018-10-26 20:27:10,917 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 20:27:10,917 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-26 20:27:10,918 INFO L424 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 20:27:10,918 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 20:27:10,918 INFO L82 PathProgramCache]: Analyzing trace with hash -1826494496, now seen corresponding path program 1 times [2018-10-26 20:27:10,918 INFO L225 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-10-26 20:27:10,918 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_521fb4d3-e20b-49ce-8493-3e25d8272380/bin-2019/uautomizer/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 [2018-10-26 20:27:10,925 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 20:27:10,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 20:27:10,971 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 20:27:11,030 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2018-10-26 20:27:11,031 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-10-26 20:27:11,038 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 20:27:11,038 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-26 20:27:11,039 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-26 20:27:11,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-26 20:27:11,039 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-26 20:27:11,039 INFO L87 Difference]: Start difference. First operand 51 states and 53 transitions. Second operand 5 states. [2018-10-26 20:27:11,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 20:27:11,112 INFO L93 Difference]: Finished difference Result 75 states and 77 transitions. [2018-10-26 20:27:11,122 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-26 20:27:11,122 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 48 [2018-10-26 20:27:11,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 20:27:11,123 INFO L225 Difference]: With dead ends: 75 [2018-10-26 20:27:11,124 INFO L226 Difference]: Without dead ends: 51 [2018-10-26 20:27:11,124 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 43 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-10-26 20:27:11,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2018-10-26 20:27:11,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2018-10-26 20:27:11,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2018-10-26 20:27:11,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 52 transitions. [2018-10-26 20:27:11,129 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 52 transitions. Word has length 48 [2018-10-26 20:27:11,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 20:27:11,130 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 52 transitions. [2018-10-26 20:27:11,130 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-26 20:27:11,130 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 52 transitions. [2018-10-26 20:27:11,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2018-10-26 20:27:11,131 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 20:27:11,131 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-26 20:27:11,131 INFO L424 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 20:27:11,131 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 20:27:11,131 INFO L82 PathProgramCache]: Analyzing trace with hash 1659126174, now seen corresponding path program 1 times [2018-10-26 20:27:11,132 INFO L225 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-10-26 20:27:11,132 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_521fb4d3-e20b-49ce-8493-3e25d8272380/bin-2019/uautomizer/mathsat Starting monitored process 8 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with mathsat -unsat_core_generation=3 [2018-10-26 20:27:11,135 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 20:27:11,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 20:27:11,194 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 20:27:11,276 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2018-10-26 20:27:11,277 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-10-26 20:27:11,284 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 20:27:11,284 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-10-26 20:27:11,285 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-26 20:27:11,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-26 20:27:11,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-10-26 20:27:11,285 INFO L87 Difference]: Start difference. First operand 51 states and 52 transitions. Second operand 8 states. [2018-10-26 20:27:11,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 20:27:11,451 INFO L93 Difference]: Finished difference Result 54 states and 54 transitions. [2018-10-26 20:27:11,451 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-26 20:27:11,451 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 48 [2018-10-26 20:27:11,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 20:27:11,452 INFO L225 Difference]: With dead ends: 54 [2018-10-26 20:27:11,452 INFO L226 Difference]: Without dead ends: 51 [2018-10-26 20:27:11,452 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2018-10-26 20:27:11,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2018-10-26 20:27:11,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2018-10-26 20:27:11,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2018-10-26 20:27:11,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 51 transitions. [2018-10-26 20:27:11,457 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 51 transitions. Word has length 48 [2018-10-26 20:27:11,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 20:27:11,457 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 51 transitions. [2018-10-26 20:27:11,458 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-26 20:27:11,458 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 51 transitions. [2018-10-26 20:27:11,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2018-10-26 20:27:11,458 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 20:27:11,459 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-26 20:27:11,460 INFO L424 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 20:27:11,460 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 20:27:11,460 INFO L82 PathProgramCache]: Analyzing trace with hash -1902635068, now seen corresponding path program 1 times [2018-10-26 20:27:11,461 INFO L225 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-10-26 20:27:11,461 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_521fb4d3-e20b-49ce-8493-3e25d8272380/bin-2019/uautomizer/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 [2018-10-26 20:27:11,465 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 20:27:11,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 20:27:11,525 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 20:27:11,632 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 11 treesize of output 8 [2018-10-26 20:27:11,635 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 8 treesize of output 7 [2018-10-26 20:27:11,635 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-26 20:27:11,638 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 20:27:11,645 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-26 20:27:11,645 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:21, output treesize:21 [2018-10-26 20:27:11,670 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 29 treesize of output 21 [2018-10-26 20:27:11,674 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 21 treesize of output 9 [2018-10-26 20:27:11,674 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-26 20:27:11,676 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-26 20:27:11,678 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-10-26 20:27:11,679 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:29, output treesize:9 [2018-10-26 20:27:12,039 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2018-10-26 20:27:12,040 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-10-26 20:27:12,049 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 20:27:12,049 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2018-10-26 20:27:12,050 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-10-26 20:27:12,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-10-26 20:27:12,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2018-10-26 20:27:12,051 INFO L87 Difference]: Start difference. First operand 51 states and 51 transitions. Second operand 15 states. [2018-10-26 20:27:12,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 20:27:12,817 INFO L93 Difference]: Finished difference Result 51 states and 51 transitions. [2018-10-26 20:27:12,817 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-10-26 20:27:12,817 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 64 [2018-10-26 20:27:12,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 20:27:12,818 INFO L225 Difference]: With dead ends: 51 [2018-10-26 20:27:12,818 INFO L226 Difference]: Without dead ends: 0 [2018-10-26 20:27:12,819 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=87, Invalid=563, Unknown=0, NotChecked=0, Total=650 [2018-10-26 20:27:12,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-10-26 20:27:12,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-10-26 20:27:12,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-10-26 20:27:12,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-10-26 20:27:12,819 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 64 [2018-10-26 20:27:12,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 20:27:12,820 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-26 20:27:12,820 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-10-26 20:27:12,820 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-10-26 20:27:12,820 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-10-26 20:27:12,824 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-10-26 20:27:13,090 WARN L179 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-10-26 20:27:13,246 INFO L428 ceAbstractionStarter]: At program point fmin_floatENTRY(lines 35 42) the Hoare annotation is: true [2018-10-26 20:27:13,246 INFO L425 ceAbstractionStarter]: For program point fmin_floatEXIT(lines 35 42) no Hoare annotation was computed. [2018-10-26 20:27:13,246 INFO L425 ceAbstractionStarter]: For program point fmin_floatFINAL(lines 35 42) no Hoare annotation was computed. [2018-10-26 20:27:13,246 INFO L425 ceAbstractionStarter]: For program point L41(line 41) no Hoare annotation was computed. [2018-10-26 20:27:13,246 INFO L425 ceAbstractionStarter]: For program point L41-2(line 41) no Hoare annotation was computed. [2018-10-26 20:27:13,246 INFO L421 ceAbstractionStarter]: At program point L38(line 38) the Hoare annotation is: (let ((.cse0 (= fmin_float_~x |fmin_float_#in~x|))) (or (and .cse0 (exists ((__fpclassify_float_~w~0 (_ BitVec 32))) (and (= (fp ((_ extract 31 31) __fpclassify_float_~w~0) ((_ extract 30 23) __fpclassify_float_~w~0) ((_ extract 22 0) __fpclassify_float_~w~0)) |fmin_float_#in~x|) (not (= __fpclassify_float_~w~0 (_ bv0 32)))))) (and .cse0 (= fmin_float_~y |fmin_float_#in~y|)))) [2018-10-26 20:27:13,247 INFO L425 ceAbstractionStarter]: For program point L38-1(lines 38 39) no Hoare annotation was computed. [2018-10-26 20:27:13,247 INFO L421 ceAbstractionStarter]: At program point L36(line 36) the Hoare annotation is: (and (= fmin_float_~x |fmin_float_#in~x|) (= fmin_float_~y |fmin_float_#in~y|)) [2018-10-26 20:27:13,247 INFO L425 ceAbstractionStarter]: For program point L36-1(lines 36 37) no Hoare annotation was computed. [2018-10-26 20:27:13,247 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2018-10-26 20:27:13,247 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2018-10-26 20:27:13,247 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-10-26 20:27:13,247 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-10-26 20:27:13,247 INFO L428 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-10-26 20:27:13,247 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-10-26 20:27:13,247 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-10-26 20:27:13,247 INFO L425 ceAbstractionStarter]: For program point L66-1(line 66) no Hoare annotation was computed. [2018-10-26 20:27:13,247 INFO L425 ceAbstractionStarter]: For program point L69-4(lines 69 72) no Hoare annotation was computed. [2018-10-26 20:27:13,247 INFO L428 ceAbstractionStarter]: At program point mainENTRY(lines 56 75) the Hoare annotation is: true [2018-10-26 20:27:13,248 INFO L425 ceAbstractionStarter]: For program point mainEXIT(lines 56 75) no Hoare annotation was computed. [2018-10-26 20:27:13,248 INFO L425 ceAbstractionStarter]: For program point mainFINAL(lines 56 75) no Hoare annotation was computed. [2018-10-26 20:27:13,248 INFO L425 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 70) no Hoare annotation was computed. [2018-10-26 20:27:13,248 INFO L425 ceAbstractionStarter]: For program point L70(line 70) no Hoare annotation was computed. [2018-10-26 20:27:13,248 INFO L425 ceAbstractionStarter]: For program point L69(line 69) no Hoare annotation was computed. [2018-10-26 20:27:13,248 INFO L421 ceAbstractionStarter]: At program point L69-1(line 69) the Hoare annotation is: (let ((.cse0 (fp.neg (_ +zero 8 24)))) (and (= (_ +zero 8 24) main_~x~0) (= main_~res~0 .cse0) |main_#t~short9| (= main_~y~0 .cse0))) [2018-10-26 20:27:13,248 INFO L425 ceAbstractionStarter]: For program point L69-2(line 69) no Hoare annotation was computed. [2018-10-26 20:27:13,248 INFO L421 ceAbstractionStarter]: At program point L66(line 66) the Hoare annotation is: (and (= (_ +zero 8 24) main_~x~0) (= main_~y~0 (fp.neg (_ +zero 8 24)))) [2018-10-26 20:27:13,248 INFO L425 ceAbstractionStarter]: For program point L29(lines 29 32) no Hoare annotation was computed. [2018-10-26 20:27:13,248 INFO L425 ceAbstractionStarter]: For program point __fpclassify_floatFINAL(lines 12 33) no Hoare annotation was computed. [2018-10-26 20:27:13,249 INFO L425 ceAbstractionStarter]: For program point L23(lines 23 32) no Hoare annotation was computed. [2018-10-26 20:27:13,249 INFO L425 ceAbstractionStarter]: For program point L17(line 17) no Hoare annotation was computed. [2018-10-26 20:27:13,249 INFO L425 ceAbstractionStarter]: For program point L15-1(lines 15 19) no Hoare annotation was computed. [2018-10-26 20:27:13,249 INFO L421 ceAbstractionStarter]: At program point L15-3(lines 15 19) the Hoare annotation is: (= __fpclassify_float_~x |__fpclassify_float_#in~x|) [2018-10-26 20:27:13,249 INFO L425 ceAbstractionStarter]: For program point L15-4(lines 12 33) no Hoare annotation was computed. [2018-10-26 20:27:13,249 INFO L425 ceAbstractionStarter]: For program point L26(lines 26 32) no Hoare annotation was computed. [2018-10-26 20:27:13,249 INFO L425 ceAbstractionStarter]: For program point L18(line 18) no Hoare annotation was computed. [2018-10-26 20:27:13,249 INFO L425 ceAbstractionStarter]: For program point L18-1(line 18) no Hoare annotation was computed. [2018-10-26 20:27:13,249 INFO L425 ceAbstractionStarter]: For program point L16(line 16) no Hoare annotation was computed. [2018-10-26 20:27:13,249 INFO L425 ceAbstractionStarter]: For program point L18-2(line 18) no Hoare annotation was computed. [2018-10-26 20:27:13,249 INFO L425 ceAbstractionStarter]: For program point L16-1(line 16) no Hoare annotation was computed. [2018-10-26 20:27:13,249 INFO L425 ceAbstractionStarter]: For program point L16-2(line 16) no Hoare annotation was computed. [2018-10-26 20:27:13,249 INFO L425 ceAbstractionStarter]: For program point L16-3(line 16) no Hoare annotation was computed. [2018-10-26 20:27:13,249 INFO L428 ceAbstractionStarter]: At program point __fpclassify_floatENTRY(lines 12 33) the Hoare annotation is: true [2018-10-26 20:27:13,250 INFO L425 ceAbstractionStarter]: For program point __fpclassify_floatEXIT(lines 12 33) no Hoare annotation was computed. [2018-10-26 20:27:13,250 INFO L425 ceAbstractionStarter]: For program point __signbit_floatFINAL(lines 44 54) no Hoare annotation was computed. [2018-10-26 20:27:13,250 INFO L425 ceAbstractionStarter]: For program point L50(line 50) no Hoare annotation was computed. [2018-10-26 20:27:13,250 INFO L425 ceAbstractionStarter]: For program point L49(line 49) no Hoare annotation was computed. [2018-10-26 20:27:13,250 INFO L425 ceAbstractionStarter]: For program point L50-1(line 50) no Hoare annotation was computed. [2018-10-26 20:27:13,250 INFO L428 ceAbstractionStarter]: At program point __signbit_floatENTRY(lines 44 54) the Hoare annotation is: true [2018-10-26 20:27:13,250 INFO L425 ceAbstractionStarter]: For program point L48(line 48) no Hoare annotation was computed. [2018-10-26 20:27:13,250 INFO L425 ceAbstractionStarter]: For program point L50-2(line 50) no Hoare annotation was computed. [2018-10-26 20:27:13,250 INFO L425 ceAbstractionStarter]: For program point L48-1(line 48) no Hoare annotation was computed. [2018-10-26 20:27:13,250 INFO L425 ceAbstractionStarter]: For program point L48-2(line 48) no Hoare annotation was computed. [2018-10-26 20:27:13,250 INFO L425 ceAbstractionStarter]: For program point L47-1(lines 47 51) no Hoare annotation was computed. [2018-10-26 20:27:13,250 INFO L425 ceAbstractionStarter]: For program point L48-3(line 48) no Hoare annotation was computed. [2018-10-26 20:27:13,250 INFO L421 ceAbstractionStarter]: At program point L47-3(lines 47 51) the Hoare annotation is: (= |__signbit_float_#in~x| __signbit_float_~x) [2018-10-26 20:27:13,250 INFO L425 ceAbstractionStarter]: For program point __signbit_floatEXIT(lines 44 54) no Hoare annotation was computed. [2018-10-26 20:27:13,251 INFO L425 ceAbstractionStarter]: For program point L47-4(lines 47 51) no Hoare annotation was computed. [2018-10-26 20:27:13,261 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.10 08:27:13 BoogieIcfgContainer [2018-10-26 20:27:13,262 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-26 20:27:13,262 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-10-26 20:27:13,262 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-10-26 20:27:13,262 INFO L276 PluginConnector]: Witness Printer initialized [2018-10-26 20:27:13,263 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 08:27:07" (3/4) ... [2018-10-26 20:27:13,265 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-10-26 20:27:13,270 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-10-26 20:27:13,270 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure fmin_float [2018-10-26 20:27:13,271 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-10-26 20:27:13,271 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure __fpclassify_float [2018-10-26 20:27:13,271 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure __signbit_float [2018-10-26 20:27:13,274 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2018-10-26 20:27:13,275 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2018-10-26 20:27:13,275 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-10-26 20:27:13,295 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: x == \old(x) [2018-10-26 20:27:13,296 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: \old(x) == x [2018-10-26 20:27:13,324 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_521fb4d3-e20b-49ce-8493-3e25d8272380/bin-2019/uautomizer/witness.graphml [2018-10-26 20:27:13,324 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-10-26 20:27:13,325 INFO L168 Benchmark]: Toolchain (without parser) took 7001.75 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 223.3 MB). Free memory was 953.1 MB in the beginning and 1.1 GB in the end (delta: -194.2 MB). Peak memory consumption was 29.2 MB. Max. memory is 11.5 GB. [2018-10-26 20:27:13,325 INFO L168 Benchmark]: CDTParser took 0.16 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. [2018-10-26 20:27:13,326 INFO L168 Benchmark]: CACSL2BoogieTranslator took 281.05 ms. Allocated memory is still 1.0 GB. Free memory was 953.1 MB in the beginning and 937.0 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. [2018-10-26 20:27:13,326 INFO L168 Benchmark]: Boogie Preprocessor took 37.77 ms. Allocated memory is still 1.0 GB. Free memory is still 937.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-26 20:27:13,326 INFO L168 Benchmark]: RCFGBuilder took 596.48 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 174.1 MB). Free memory was 937.0 MB in the beginning and 1.1 GB in the end (delta: -206.7 MB). Peak memory consumption was 22.1 MB. Max. memory is 11.5 GB. [2018-10-26 20:27:13,326 INFO L168 Benchmark]: TraceAbstraction took 6020.65 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 49.3 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -3.5 MB). Peak memory consumption was 45.7 MB. Max. memory is 11.5 GB. [2018-10-26 20:27:13,327 INFO L168 Benchmark]: Witness Printer took 61.99 ms. Allocated memory is still 1.3 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-26 20:27:13,328 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 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 281.05 ms. Allocated memory is still 1.0 GB. Free memory was 953.1 MB in the beginning and 937.0 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 37.77 ms. Allocated memory is still 1.0 GB. Free memory is still 937.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 596.48 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 174.1 MB). Free memory was 937.0 MB in the beginning and 1.1 GB in the end (delta: -206.7 MB). Peak memory consumption was 22.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 6020.65 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 49.3 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -3.5 MB). Peak memory consumption was 45.7 MB. Max. memory is 11.5 GB. * Witness Printer took 61.99 ms. Allocated memory is still 1.3 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 70]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 15]: Loop Invariant Derived loop invariant: x == \old(x) - InvariantResult [Line: 47]: Loop Invariant Derived loop invariant: \old(x) == x - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 58 locations, 1 error locations. SAFE Result, 5.9s OverallTime, 8 OverallIterations, 2 TraceHistogramMax, 3.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.4s HoareAnnotationTime, HoareTripleCheckerStatistics: 417 SDtfs, 140 SDslu, 1695 SDs, 0 SdLazy, 581 SolverSat, 21 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 358 GetRequests, 285 SyntacticMatches, 1 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 2.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=58occurred 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, 8 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 13 LocationsWithAnnotation, 31 PreInvPairs, 38 NumberOfFragments, 68 HoareAnnotationTreeSize, 31 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 13 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.7s InterpolantComputationTime, 335 NumberOfCodeBlocks, 335 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 327 ConstructedInterpolants, 14 QuantifiedInterpolants, 44766 SizeOfPredicates, 33 NumberOfNonLiveVariables, 728 ConjunctsInSsa, 60 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 70/70 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...