./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/double_req_bl_1232b_false-unreach-call.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 635dfa2a Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_1c6a57ca-3765-457b-866e-3b86c38175d9/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_1c6a57ca-3765-457b-866e-3b86c38175d9/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_1c6a57ca-3765-457b-866e-3b86c38175d9/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_1c6a57ca-3765-457b-866e-3b86c38175d9/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1232b_false-unreach-call.c -s /tmp/vcloud-vcloud-master/worker/working_dir_1c6a57ca-3765-457b-866e-3b86c38175d9/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_1c6a57ca-3765-457b-866e-3b86c38175d9/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 064927d7c1e3d8158c8524deee46f65d988c7936 ........................................................................................................................................................................................................................................................................................................................................................................................... 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_1c6a57ca-3765-457b-866e-3b86c38175d9/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_1c6a57ca-3765-457b-866e-3b86c38175d9/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_1c6a57ca-3765-457b-866e-3b86c38175d9/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_1c6a57ca-3765-457b-866e-3b86c38175d9/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1232b_false-unreach-call.c -s /tmp/vcloud-vcloud-master/worker/working_dir_1c6a57ca-3765-457b-866e-3b86c38175d9/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_1c6a57ca-3765-457b-866e-3b86c38175d9/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 064927d7c1e3d8158c8524deee46f65d988c7936 ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.1.23-635dfa2 [2018-12-02 14:06:30,010 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-02 14:06:30,010 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-02 14:06:30,016 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-02 14:06:30,017 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-02 14:06:30,017 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-02 14:06:30,018 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-02 14:06:30,019 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-02 14:06:30,020 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-02 14:06:30,021 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-02 14:06:30,021 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-02 14:06:30,021 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-02 14:06:30,022 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-02 14:06:30,023 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-02 14:06:30,023 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-02 14:06:30,024 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-02 14:06:30,024 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-02 14:06:30,025 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-02 14:06:30,026 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-02 14:06:30,027 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-02 14:06:30,028 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-02 14:06:30,029 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-02 14:06:30,030 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-02 14:06:30,030 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-02 14:06:30,030 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-02 14:06:30,031 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-02 14:06:30,032 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-02 14:06:30,032 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-02 14:06:30,032 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-02 14:06:30,033 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-02 14:06:30,033 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-02 14:06:30,034 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-02 14:06:30,034 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-02 14:06:30,034 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-02 14:06:30,035 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-02 14:06:30,035 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-02 14:06:30,035 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_1c6a57ca-3765-457b-866e-3b86c38175d9/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-12-02 14:06:30,043 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-02 14:06:30,043 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-02 14:06:30,044 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-02 14:06:30,044 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-02 14:06:30,044 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-02 14:06:30,044 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-02 14:06:30,045 INFO L133 SettingsManager]: * Use SBE=true [2018-12-02 14:06:30,045 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-02 14:06:30,045 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-02 14:06:30,045 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-02 14:06:30,045 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-02 14:06:30,045 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-02 14:06:30,046 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-02 14:06:30,046 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-02 14:06:30,046 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-02 14:06:30,046 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-02 14:06:30,046 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-02 14:06:30,046 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-02 14:06:30,046 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-02 14:06:30,047 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-02 14:06:30,047 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-02 14:06:30,047 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-02 14:06:30,047 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-02 14:06:30,047 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-02 14:06:30,047 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-02 14:06:30,047 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-02 14:06:30,047 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-02 14:06:30,048 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-12-02 14:06:30,048 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-02 14:06:30,048 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-02 14:06:30,048 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_1c6a57ca-3765-457b-866e-3b86c38175d9/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 -> 064927d7c1e3d8158c8524deee46f65d988c7936 [2018-12-02 14:06:30,066 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-02 14:06:30,073 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-02 14:06:30,075 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-02 14:06:30,076 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-02 14:06:30,076 INFO L276 PluginConnector]: CDTParser initialized [2018-12-02 14:06:30,076 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_1c6a57ca-3765-457b-866e-3b86c38175d9/bin-2019/uautomizer/../../sv-benchmarks/c/float-newlib/double_req_bl_1232b_false-unreach-call.c [2018-12-02 14:06:30,117 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_1c6a57ca-3765-457b-866e-3b86c38175d9/bin-2019/uautomizer/data/f60530512/bfb620b9dbbd47c0af17f3586ab392e3/FLAGe5289f8cf [2018-12-02 14:06:30,564 INFO L307 CDTParser]: Found 1 translation units. [2018-12-02 14:06:30,564 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_1c6a57ca-3765-457b-866e-3b86c38175d9/sv-benchmarks/c/float-newlib/double_req_bl_1232b_false-unreach-call.c [2018-12-02 14:06:30,568 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_1c6a57ca-3765-457b-866e-3b86c38175d9/bin-2019/uautomizer/data/f60530512/bfb620b9dbbd47c0af17f3586ab392e3/FLAGe5289f8cf [2018-12-02 14:06:30,576 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_1c6a57ca-3765-457b-866e-3b86c38175d9/bin-2019/uautomizer/data/f60530512/bfb620b9dbbd47c0af17f3586ab392e3 [2018-12-02 14:06:30,578 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-02 14:06:30,578 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-02 14:06:30,579 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-02 14:06:30,579 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-02 14:06:30,581 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-02 14:06:30,581 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 02:06:30" (1/1) ... [2018-12-02 14:06:30,583 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58f41b83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:06:30, skipping insertion in model container [2018-12-02 14:06:30,583 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 02:06:30" (1/1) ... [2018-12-02 14:06:30,587 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-02 14:06:30,597 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-02 14:06:30,690 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-02 14:06:30,692 INFO L191 MainTranslator]: Completed pre-run [2018-12-02 14:06:30,708 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-02 14:06:30,720 INFO L195 MainTranslator]: Completed translation [2018-12-02 14:06:30,720 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:06:30 WrapperNode [2018-12-02 14:06:30,720 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-02 14:06:30,721 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-02 14:06:30,721 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-02 14:06:30,721 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-02 14:06:30,725 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:06:30" (1/1) ... [2018-12-02 14:06:30,731 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:06:30" (1/1) ... [2018-12-02 14:06:30,735 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-02 14:06:30,735 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-02 14:06:30,735 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-02 14:06:30,735 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-02 14:06:30,770 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:06:30" (1/1) ... [2018-12-02 14:06:30,770 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:06:30" (1/1) ... [2018-12-02 14:06:30,771 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:06:30" (1/1) ... [2018-12-02 14:06:30,771 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:06:30" (1/1) ... [2018-12-02 14:06:30,777 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:06:30" (1/1) ... [2018-12-02 14:06:30,781 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:06:30" (1/1) ... [2018-12-02 14:06:30,782 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:06:30" (1/1) ... [2018-12-02 14:06:30,783 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-02 14:06:30,783 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-02 14:06:30,783 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-02 14:06:30,783 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-02 14:06:30,784 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:06:30" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1c6a57ca-3765-457b-866e-3b86c38175d9/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 [2018-12-02 14:06:30,815 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2018-12-02 14:06:30,815 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2018-12-02 14:06:30,815 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-02 14:06:30,815 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-02 14:06:30,816 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_double [2018-12-02 14:06:30,816 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_double [2018-12-02 14:06:30,816 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-02 14:06:30,816 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-02 14:06:30,816 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2018-12-02 14:06:30,816 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-02 14:06:30,816 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-02 14:06:30,816 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-02 14:06:30,816 INFO L130 BoogieDeclarations]: Found specification of procedure fmin_double [2018-12-02 14:06:30,817 INFO L138 BoogieDeclarations]: Found implementation of procedure fmin_double [2018-12-02 14:06:30,817 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-12-02 14:06:30,817 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-02 14:06:30,961 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-02 14:06:30,961 INFO L280 CfgBuilder]: Removed 4 assue(true) statements. [2018-12-02 14:06:30,961 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 02:06:30 BoogieIcfgContainer [2018-12-02 14:06:30,961 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-02 14:06:30,962 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-02 14:06:30,962 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-02 14:06:30,964 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-02 14:06:30,964 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 02:06:30" (1/3) ... [2018-12-02 14:06:30,965 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15074aa3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 02:06:30, skipping insertion in model container [2018-12-02 14:06:30,965 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:06:30" (2/3) ... [2018-12-02 14:06:30,965 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15074aa3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 02:06:30, skipping insertion in model container [2018-12-02 14:06:30,965 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 02:06:30" (3/3) ... [2018-12-02 14:06:30,966 INFO L112 eAbstractionObserver]: Analyzing ICFG double_req_bl_1232b_false-unreach-call.c [2018-12-02 14:06:30,972 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-02 14:06:30,977 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-02 14:06:30,986 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-02 14:06:31,004 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-02 14:06:31,004 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-02 14:06:31,004 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-02 14:06:31,004 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-02 14:06:31,004 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-02 14:06:31,004 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-02 14:06:31,004 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-02 14:06:31,004 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-02 14:06:31,004 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-02 14:06:31,015 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2018-12-02 14:06:31,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-12-02 14:06:31,019 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 14:06:31,019 INFO L402 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] [2018-12-02 14:06:31,021 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 14:06:31,025 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 14:06:31,025 INFO L82 PathProgramCache]: Analyzing trace with hash 2125018936, now seen corresponding path program 1 times [2018-12-02 14:06:31,027 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 14:06:31,027 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 14:06:31,055 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 14:06:31,055 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 14:06:31,055 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 14:06:31,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 14:06:31,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 14:06:31,105 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 14:06:31,106 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-02 14:06:31,108 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-12-02 14:06:31,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-12-02 14:06:31,115 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-02 14:06:31,117 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 2 states. [2018-12-02 14:06:31,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 14:06:31,131 INFO L93 Difference]: Finished difference Result 79 states and 107 transitions. [2018-12-02 14:06:31,131 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-12-02 14:06:31,132 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 22 [2018-12-02 14:06:31,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 14:06:31,137 INFO L225 Difference]: With dead ends: 79 [2018-12-02 14:06:31,137 INFO L226 Difference]: Without dead ends: 40 [2018-12-02 14:06:31,139 INFO L631 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 [2018-12-02 14:06:31,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2018-12-02 14:06:31,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2018-12-02 14:06:31,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-12-02 14:06:31,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 48 transitions. [2018-12-02 14:06:31,163 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 48 transitions. Word has length 22 [2018-12-02 14:06:31,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 14:06:31,163 INFO L480 AbstractCegarLoop]: Abstraction has 40 states and 48 transitions. [2018-12-02 14:06:31,163 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-12-02 14:06:31,163 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 48 transitions. [2018-12-02 14:06:31,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-12-02 14:06:31,164 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 14:06:31,164 INFO L402 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] [2018-12-02 14:06:31,165 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 14:06:31,165 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 14:06:31,165 INFO L82 PathProgramCache]: Analyzing trace with hash 2099930979, now seen corresponding path program 1 times [2018-12-02 14:06:31,165 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 14:06:31,165 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 14:06:31,166 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 14:06:31,166 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 14:06:31,166 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 14:06:31,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 14:06:31,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 14:06:31,215 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 14:06:31,215 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-02 14:06:31,217 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-02 14:06:31,217 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-02 14:06:31,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-02 14:06:31,217 INFO L87 Difference]: Start difference. First operand 40 states and 48 transitions. Second operand 4 states. [2018-12-02 14:06:31,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 14:06:31,241 INFO L93 Difference]: Finished difference Result 59 states and 69 transitions. [2018-12-02 14:06:31,241 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-02 14:06:31,241 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2018-12-02 14:06:31,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 14:06:31,243 INFO L225 Difference]: With dead ends: 59 [2018-12-02 14:06:31,244 INFO L226 Difference]: Without dead ends: 44 [2018-12-02 14:06:31,244 INFO L631 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 [2018-12-02 14:06:31,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-12-02 14:06:31,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2018-12-02 14:06:31,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-12-02 14:06:31,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 53 transitions. [2018-12-02 14:06:31,251 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 53 transitions. Word has length 23 [2018-12-02 14:06:31,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 14:06:31,251 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 53 transitions. [2018-12-02 14:06:31,251 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-02 14:06:31,251 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 53 transitions. [2018-12-02 14:06:31,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-12-02 14:06:31,252 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 14:06:31,252 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 14:06:31,252 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 14:06:31,252 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 14:06:31,252 INFO L82 PathProgramCache]: Analyzing trace with hash -2011933537, now seen corresponding path program 1 times [2018-12-02 14:06:31,252 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 14:06:31,253 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 14:06:31,253 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 14:06:31,253 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 14:06:31,253 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 14:06:31,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 14:06:31,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 14:06:31,287 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 14:06:31,288 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-02 14:06:31,288 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-02 14:06:31,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-02 14:06:31,288 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-02 14:06:31,288 INFO L87 Difference]: Start difference. First operand 44 states and 53 transitions. Second operand 4 states. [2018-12-02 14:06:31,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 14:06:31,307 INFO L93 Difference]: Finished difference Result 63 states and 74 transitions. [2018-12-02 14:06:31,307 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-02 14:06:31,308 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 26 [2018-12-02 14:06:31,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 14:06:31,308 INFO L225 Difference]: With dead ends: 63 [2018-12-02 14:06:31,309 INFO L226 Difference]: Without dead ends: 48 [2018-12-02 14:06:31,309 INFO L631 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 [2018-12-02 14:06:31,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2018-12-02 14:06:31,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 44. [2018-12-02 14:06:31,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-12-02 14:06:31,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 53 transitions. [2018-12-02 14:06:31,314 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 53 transitions. Word has length 26 [2018-12-02 14:06:31,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 14:06:31,314 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 53 transitions. [2018-12-02 14:06:31,314 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-02 14:06:31,315 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 53 transitions. [2018-12-02 14:06:31,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-12-02 14:06:31,315 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 14:06:31,315 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 14:06:31,316 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 14:06:31,316 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 14:06:31,316 INFO L82 PathProgramCache]: Analyzing trace with hash 486082400, now seen corresponding path program 1 times [2018-12-02 14:06:31,316 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-02 14:06:31,316 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-02 14:06:31,317 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 14:06:31,317 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 14:06:31,317 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 14:06:31,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-02 14:06:31,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-02 14:06:31,363 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-12-02 14:06:31,383 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 02:06:31 BoogieIcfgContainer [2018-12-02 14:06:31,383 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-02 14:06:31,384 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-02 14:06:31,384 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-02 14:06:31,384 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-02 14:06:31,384 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 02:06:30" (3/4) ... [2018-12-02 14:06:31,387 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-12-02 14:06:31,387 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-02 14:06:31,387 INFO L168 Benchmark]: Toolchain (without parser) took 809.57 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 133.2 MB). Free memory was 962.4 MB in the beginning and 1.0 GB in the end (delta: -85.5 MB). Peak memory consumption was 47.7 MB. Max. memory is 11.5 GB. [2018-12-02 14:06:31,388 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 1.0 GB. Free memory is still 982.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-02 14:06:31,389 INFO L168 Benchmark]: CACSL2BoogieTranslator took 141.48 ms. Allocated memory is still 1.0 GB. Free memory was 962.4 MB in the beginning and 950.6 MB in the end (delta: 11.8 MB). Peak memory consumption was 11.8 MB. Max. memory is 11.5 GB. [2018-12-02 14:06:31,389 INFO L168 Benchmark]: Boogie Procedure Inliner took 14.39 ms. Allocated memory is still 1.0 GB. Free memory was 950.6 MB in the beginning and 945.2 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-12-02 14:06:31,390 INFO L168 Benchmark]: Boogie Preprocessor took 47.78 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 133.2 MB). Free memory was 945.2 MB in the beginning and 1.1 GB in the end (delta: -179.4 MB). Peak memory consumption was 13.1 MB. Max. memory is 11.5 GB. [2018-12-02 14:06:31,390 INFO L168 Benchmark]: RCFGBuilder took 178.18 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: 18.3 MB). Peak memory consumption was 18.3 MB. Max. memory is 11.5 GB. [2018-12-02 14:06:31,390 INFO L168 Benchmark]: TraceAbstraction took 421.68 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 58.4 MB). Peak memory consumption was 58.4 MB. Max. memory is 11.5 GB. [2018-12-02 14:06:31,391 INFO L168 Benchmark]: Witness Printer took 3.18 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-02 14:06:31,393 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 1.0 GB. Free memory is still 982.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 141.48 ms. Allocated memory is still 1.0 GB. Free memory was 962.4 MB in the beginning and 950.6 MB in the end (delta: 11.8 MB). Peak memory consumption was 11.8 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 14.39 ms. Allocated memory is still 1.0 GB. Free memory was 950.6 MB in the beginning and 945.2 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 47.78 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 133.2 MB). Free memory was 945.2 MB in the beginning and 1.1 GB in the end (delta: -179.4 MB). Peak memory consumption was 13.1 MB. Max. memory is 11.5 GB. * RCFGBuilder took 178.18 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: 18.3 MB). Peak memory consumption was 18.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 421.68 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 58.4 MB). Peak memory consumption was 58.4 MB. Max. memory is 11.5 GB. * Witness Printer took 3.18 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 80]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 79, overapproximation of someUnaryDOUBLEoperation at line 74. Possible FailurePath: [L74] double x = -0.0; [L75] double y = 0.0; VAL [y=0] [L76] CALL, EXPR fmin_double(x, y) VAL [\old(x)=4293918727, \old(y)=0] [L46] CALL, EXPR __fpclassify_double(x) VAL [\old(x)=4293918727] [L19] __uint32_t msw, lsw; VAL [\old(x)=4293918727, x=4293918727] [L22] ieee_double_shape_type ew_u; [L23] ew_u.value = (x) [L24] EXPR ew_u.parts.msw [L24] (msw) = ew_u.parts.msw [L25] EXPR ew_u.parts.lsw [L25] (lsw) = ew_u.parts.lsw [L28-L29] COND FALSE !((msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000)) VAL [\old(x)=4293918727, lsw=1, msw=4293918721, x=4293918727] [L31-L32] COND FALSE !((msw >= 0x00100000 && msw <= 0x7fefffff) || (msw >= 0x80100000 && msw <= 0xffefffff)) VAL [\old(x)=4293918727, lsw=1, msw=4293918721, x=4293918727] [L34-L35] COND FALSE !(( msw <= 0x000fffff) || (msw >= 0x80000000 && msw <= 0x800fffff)) VAL [\old(x)=4293918727, lsw=1, msw=4293918721, x=4293918727] [L38-L39] COND FALSE !((msw == 0x7ff00000 && lsw == 0x00000000) || (msw == 0xfff00000 && lsw == 0x00000000)) [L42] return 0; VAL [\old(x)=4293918727, \result=0, lsw=1, msw=4293918721, x=4293918727] [L46] RET, EXPR __fpclassify_double(x) VAL [\old(x)=4293918727, \old(y)=0, __fpclassify_double(x)=0, x=4293918727, y=0] [L46] COND TRUE __fpclassify_double(x) == 0 [L47] return y; VAL [\old(x)=4293918727, \old(y)=0, \result=0, x=4293918727, y=0] [L76] RET, EXPR fmin_double(x, y) VAL [fmin_double(x, y)=0, x=4293918727, y=0] [L76] double res = fmin_double(x, y); [L79] EXPR res == -0.0 && __signbit_double(res) == 1 VAL [res=0, res == -0.0 && __signbit_double(res) == 1=0, x=4293918727, y=0] [L79] COND TRUE !(res == -0.0 && __signbit_double(res) == 1) [L80] __VERIFIER_error() VAL [res=0, x=4293918727, y=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 44 locations, 1 error locations. UNSAFE Result, 0.3s OverallTime, 4 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 144 SDtfs, 0 SDslu, 172 SDs, 0 SdLazy, 17 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=44occurred 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, 0.0s InterpolantComputationTime, 97 NumberOfCodeBlocks, 97 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 68 ConstructedInterpolants, 0 QuantifiedInterpolants, 1926 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 0.1.23-635dfa2 [2018-12-02 14:06:32,671 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-02 14:06:32,672 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-02 14:06:32,678 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-02 14:06:32,678 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-02 14:06:32,679 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-02 14:06:32,679 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-02 14:06:32,680 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-02 14:06:32,681 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-02 14:06:32,681 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-02 14:06:32,682 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-02 14:06:32,682 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-02 14:06:32,682 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-02 14:06:32,683 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-02 14:06:32,683 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-02 14:06:32,684 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-02 14:06:32,684 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-02 14:06:32,685 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-02 14:06:32,686 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-02 14:06:32,686 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-02 14:06:32,687 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-02 14:06:32,687 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-02 14:06:32,689 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-02 14:06:32,689 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-02 14:06:32,689 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-02 14:06:32,689 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-02 14:06:32,690 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-02 14:06:32,690 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-02 14:06:32,690 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-02 14:06:32,691 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-02 14:06:32,691 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-02 14:06:32,691 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-02 14:06:32,692 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-02 14:06:32,692 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-02 14:06:32,692 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-02 14:06:32,692 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-02 14:06:32,693 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_1c6a57ca-3765-457b-866e-3b86c38175d9/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2018-12-02 14:06:32,700 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-02 14:06:32,700 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-02 14:06:32,700 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-02 14:06:32,700 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-02 14:06:32,701 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-02 14:06:32,701 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-02 14:06:32,701 INFO L133 SettingsManager]: * Use SBE=true [2018-12-02 14:06:32,701 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-02 14:06:32,701 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-02 14:06:32,701 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-02 14:06:32,701 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-02 14:06:32,701 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-02 14:06:32,701 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-02 14:06:32,702 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-02 14:06:32,702 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-12-02 14:06:32,702 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-12-02 14:06:32,702 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-02 14:06:32,702 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-02 14:06:32,702 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-02 14:06:32,702 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-02 14:06:32,702 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-02 14:06:32,702 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-02 14:06:32,702 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-02 14:06:32,702 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-02 14:06:32,702 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-02 14:06:32,703 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-02 14:06:32,703 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-02 14:06:32,703 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-02 14:06:32,703 INFO L133 SettingsManager]: * Trace refinement strategy=WOLF [2018-12-02 14:06:32,703 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-02 14:06:32,703 INFO L133 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2018-12-02 14:06:32,703 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-12-02 14:06:32,703 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_1c6a57ca-3765-457b-866e-3b86c38175d9/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 -> 064927d7c1e3d8158c8524deee46f65d988c7936 [2018-12-02 14:06:32,720 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-02 14:06:32,727 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-02 14:06:32,729 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-02 14:06:32,730 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-02 14:06:32,730 INFO L276 PluginConnector]: CDTParser initialized [2018-12-02 14:06:32,731 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_1c6a57ca-3765-457b-866e-3b86c38175d9/bin-2019/uautomizer/../../sv-benchmarks/c/float-newlib/double_req_bl_1232b_false-unreach-call.c [2018-12-02 14:06:32,766 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_1c6a57ca-3765-457b-866e-3b86c38175d9/bin-2019/uautomizer/data/93a846fe9/aff54db58529432eb199d745bb041570/FLAG6d6ab9117 [2018-12-02 14:06:33,153 INFO L307 CDTParser]: Found 1 translation units. [2018-12-02 14:06:33,154 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_1c6a57ca-3765-457b-866e-3b86c38175d9/sv-benchmarks/c/float-newlib/double_req_bl_1232b_false-unreach-call.c [2018-12-02 14:06:33,158 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_1c6a57ca-3765-457b-866e-3b86c38175d9/bin-2019/uautomizer/data/93a846fe9/aff54db58529432eb199d745bb041570/FLAG6d6ab9117 [2018-12-02 14:06:33,508 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_1c6a57ca-3765-457b-866e-3b86c38175d9/bin-2019/uautomizer/data/93a846fe9/aff54db58529432eb199d745bb041570 [2018-12-02 14:06:33,510 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-02 14:06:33,511 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-02 14:06:33,512 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-02 14:06:33,512 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-02 14:06:33,514 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-02 14:06:33,514 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 02:06:33" (1/1) ... [2018-12-02 14:06:33,516 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@426f976d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:06:33, skipping insertion in model container [2018-12-02 14:06:33,516 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 02:06:33" (1/1) ... [2018-12-02 14:06:33,521 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-02 14:06:33,531 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-02 14:06:33,632 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-02 14:06:33,635 INFO L191 MainTranslator]: Completed pre-run [2018-12-02 14:06:33,652 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-02 14:06:33,670 INFO L195 MainTranslator]: Completed translation [2018-12-02 14:06:33,670 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:06:33 WrapperNode [2018-12-02 14:06:33,670 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-02 14:06:33,671 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-02 14:06:33,671 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-02 14:06:33,671 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-02 14:06:33,676 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:06:33" (1/1) ... [2018-12-02 14:06:33,684 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:06:33" (1/1) ... [2018-12-02 14:06:33,690 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-02 14:06:33,690 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-02 14:06:33,690 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-02 14:06:33,691 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-02 14:06:33,696 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:06:33" (1/1) ... [2018-12-02 14:06:33,696 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:06:33" (1/1) ... [2018-12-02 14:06:33,698 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:06:33" (1/1) ... [2018-12-02 14:06:33,698 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:06:33" (1/1) ... [2018-12-02 14:06:33,704 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:06:33" (1/1) ... [2018-12-02 14:06:33,707 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:06:33" (1/1) ... [2018-12-02 14:06:33,708 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:06:33" (1/1) ... [2018-12-02 14:06:33,710 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-02 14:06:33,710 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-02 14:06:33,710 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-02 14:06:33,710 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-02 14:06:33,711 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:06:33" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1c6a57ca-3765-457b-866e-3b86c38175d9/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 [2018-12-02 14:06:33,772 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2018-12-02 14:06:33,772 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2018-12-02 14:06:33,772 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2018-12-02 14:06:33,772 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-02 14:06:33,773 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-02 14:06:33,773 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_double [2018-12-02 14:06:33,773 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_double [2018-12-02 14:06:33,773 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-02 14:06:33,773 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-02 14:06:33,773 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-02 14:06:33,773 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2018-12-02 14:06:33,773 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-02 14:06:33,773 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-02 14:06:33,773 INFO L130 BoogieDeclarations]: Found specification of procedure fmin_double [2018-12-02 14:06:33,773 INFO L138 BoogieDeclarations]: Found implementation of procedure fmin_double [2018-12-02 14:06:33,773 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-02 14:06:33,896 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 14:06:33,939 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-02 14:06:33,977 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-02 14:06:33,977 INFO L280 CfgBuilder]: Removed 4 assue(true) statements. [2018-12-02 14:06:33,977 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 02:06:33 BoogieIcfgContainer [2018-12-02 14:06:33,977 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-02 14:06:33,978 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-02 14:06:33,978 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-02 14:06:33,980 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-02 14:06:33,980 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 02:06:33" (1/3) ... [2018-12-02 14:06:33,980 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ab85715 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 02:06:33, skipping insertion in model container [2018-12-02 14:06:33,980 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:06:33" (2/3) ... [2018-12-02 14:06:33,980 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ab85715 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 02:06:33, skipping insertion in model container [2018-12-02 14:06:33,981 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 02:06:33" (3/3) ... [2018-12-02 14:06:33,982 INFO L112 eAbstractionObserver]: Analyzing ICFG double_req_bl_1232b_false-unreach-call.c [2018-12-02 14:06:33,989 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-02 14:06:33,993 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-02 14:06:34,002 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-02 14:06:34,019 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-02 14:06:34,020 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-02 14:06:34,020 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-02 14:06:34,020 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-02 14:06:34,020 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-02 14:06:34,020 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-02 14:06:34,020 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-02 14:06:34,020 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-02 14:06:34,020 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-02 14:06:34,029 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states. [2018-12-02 14:06:34,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-12-02 14:06:34,033 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 14:06:34,033 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 14:06:34,034 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 14:06:34,037 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 14:06:34,037 INFO L82 PathProgramCache]: Analyzing trace with hash -397395125, now seen corresponding path program 1 times [2018-12-02 14:06:34,040 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-02 14:06:34,040 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1c6a57ca-3765-457b-866e-3b86c38175d9/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 [2018-12-02 14:06:34,049 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 14:06:34,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 14:06:34,094 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 14:06:34,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 14:06:34,106 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-02 14:06:34,113 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 14:06:34,114 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-02 14:06:34,116 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-12-02 14:06:34,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-12-02 14:06:34,123 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-02 14:06:34,124 INFO L87 Difference]: Start difference. First operand 42 states. Second operand 2 states. [2018-12-02 14:06:34,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 14:06:34,138 INFO L93 Difference]: Finished difference Result 75 states and 103 transitions. [2018-12-02 14:06:34,138 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-12-02 14:06:34,138 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 21 [2018-12-02 14:06:34,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 14:06:34,144 INFO L225 Difference]: With dead ends: 75 [2018-12-02 14:06:34,144 INFO L226 Difference]: Without dead ends: 38 [2018-12-02 14:06:34,146 INFO L631 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 [2018-12-02 14:06:34,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2018-12-02 14:06:34,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2018-12-02 14:06:34,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2018-12-02 14:06:34,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 46 transitions. [2018-12-02 14:06:34,171 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 46 transitions. Word has length 21 [2018-12-02 14:06:34,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 14:06:34,171 INFO L480 AbstractCegarLoop]: Abstraction has 38 states and 46 transitions. [2018-12-02 14:06:34,171 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-12-02 14:06:34,172 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 46 transitions. [2018-12-02 14:06:34,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-12-02 14:06:34,173 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 14:06:34,173 INFO L402 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] [2018-12-02 14:06:34,173 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 14:06:34,174 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 14:06:34,174 INFO L82 PathProgramCache]: Analyzing trace with hash -2145002868, now seen corresponding path program 1 times [2018-12-02 14:06:34,174 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-02 14:06:34,174 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1c6a57ca-3765-457b-866e-3b86c38175d9/bin-2019/uautomizer/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2018-12-02 14:06:34,178 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 14:06:34,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 14:06:34,225 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 14:06:34,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 14:06:34,242 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-02 14:06:34,248 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 14:06:34,248 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-02 14:06:34,249 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-02 14:06:34,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-02 14:06:34,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-02 14:06:34,250 INFO L87 Difference]: Start difference. First operand 38 states and 46 transitions. Second operand 4 states. [2018-12-02 14:06:34,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 14:06:34,295 INFO L93 Difference]: Finished difference Result 56 states and 66 transitions. [2018-12-02 14:06:34,296 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-02 14:06:34,296 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22 [2018-12-02 14:06:34,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 14:06:34,297 INFO L225 Difference]: With dead ends: 56 [2018-12-02 14:06:34,297 INFO L226 Difference]: Without dead ends: 41 [2018-12-02 14:06:34,298 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-02 14:06:34,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-12-02 14:06:34,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2018-12-02 14:06:34,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-12-02 14:06:34,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 50 transitions. [2018-12-02 14:06:34,303 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 50 transitions. Word has length 22 [2018-12-02 14:06:34,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 14:06:34,303 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 50 transitions. [2018-12-02 14:06:34,303 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-02 14:06:34,303 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 50 transitions. [2018-12-02 14:06:34,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-12-02 14:06:34,304 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 14:06:34,304 INFO L402 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] [2018-12-02 14:06:34,304 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 14:06:34,304 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 14:06:34,304 INFO L82 PathProgramCache]: Analyzing trace with hash -1859452024, now seen corresponding path program 1 times [2018-12-02 14:06:34,304 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-02 14:06:34,304 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1c6a57ca-3765-457b-866e-3b86c38175d9/bin-2019/uautomizer/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2018-12-02 14:06:34,307 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 14:06:34,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 14:06:34,347 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 14:06:34,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 14:06:34,501 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-02 14:06:34,509 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 14:06:34,509 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-12-02 14:06:34,509 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-12-02 14:06:34,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-12-02 14:06:34,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-12-02 14:06:34,510 INFO L87 Difference]: Start difference. First operand 41 states and 50 transitions. Second operand 8 states. [2018-12-02 14:06:35,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 14:06:35,268 INFO L93 Difference]: Finished difference Result 63 states and 79 transitions. [2018-12-02 14:06:35,269 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-12-02 14:06:35,269 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 23 [2018-12-02 14:06:35,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 14:06:35,270 INFO L225 Difference]: With dead ends: 63 [2018-12-02 14:06:35,270 INFO L226 Difference]: Without dead ends: 43 [2018-12-02 14:06:35,270 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2018-12-02 14:06:35,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-12-02 14:06:35,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2018-12-02 14:06:35,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-12-02 14:06:35,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 52 transitions. [2018-12-02 14:06:35,274 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 52 transitions. Word has length 23 [2018-12-02 14:06:35,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 14:06:35,274 INFO L480 AbstractCegarLoop]: Abstraction has 43 states and 52 transitions. [2018-12-02 14:06:35,274 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-12-02 14:06:35,275 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 52 transitions. [2018-12-02 14:06:35,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-12-02 14:06:35,275 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 14:06:35,275 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 14:06:35,275 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 14:06:35,275 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 14:06:35,276 INFO L82 PathProgramCache]: Analyzing trace with hash 1911602824, now seen corresponding path program 1 times [2018-12-02 14:06:35,276 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-02 14:06:35,276 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1c6a57ca-3765-457b-866e-3b86c38175d9/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 [2018-12-02 14:06:35,279 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 14:06:35,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 14:06:35,314 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 14:06:35,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 14:06:35,324 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-02 14:06:35,330 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 14:06:35,331 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-02 14:06:35,331 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-02 14:06:35,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-02 14:06:35,331 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-02 14:06:35,331 INFO L87 Difference]: Start difference. First operand 43 states and 52 transitions. Second operand 4 states. [2018-12-02 14:06:35,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 14:06:35,360 INFO L93 Difference]: Finished difference Result 61 states and 72 transitions. [2018-12-02 14:06:35,361 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-02 14:06:35,361 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2018-12-02 14:06:35,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 14:06:35,362 INFO L225 Difference]: With dead ends: 61 [2018-12-02 14:06:35,362 INFO L226 Difference]: Without dead ends: 46 [2018-12-02 14:06:35,363 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-02 14:06:35,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2018-12-02 14:06:35,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 43. [2018-12-02 14:06:35,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-12-02 14:06:35,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 52 transitions. [2018-12-02 14:06:35,368 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 52 transitions. Word has length 24 [2018-12-02 14:06:35,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 14:06:35,369 INFO L480 AbstractCegarLoop]: Abstraction has 43 states and 52 transitions. [2018-12-02 14:06:35,369 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-02 14:06:35,369 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 52 transitions. [2018-12-02 14:06:35,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-12-02 14:06:35,370 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 14:06:35,370 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 14:06:35,370 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 14:06:35,370 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 14:06:35,370 INFO L82 PathProgramCache]: Analyzing trace with hash 2064132100, now seen corresponding path program 1 times [2018-12-02 14:06:35,371 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-02 14:06:35,371 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1c6a57ca-3765-457b-866e-3b86c38175d9/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 [2018-12-02 14:06:35,374 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 14:06:35,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 14:06:35,414 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 14:06:35,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 14:06:35,552 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-02 14:06:35,559 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 14:06:35,559 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-12-02 14:06:35,559 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-12-02 14:06:35,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-12-02 14:06:35,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-12-02 14:06:35,560 INFO L87 Difference]: Start difference. First operand 43 states and 52 transitions. Second operand 8 states. [2018-12-02 14:06:36,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 14:06:36,503 INFO L93 Difference]: Finished difference Result 62 states and 76 transitions. [2018-12-02 14:06:36,504 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-12-02 14:06:36,504 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 25 [2018-12-02 14:06:36,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 14:06:36,505 INFO L225 Difference]: With dead ends: 62 [2018-12-02 14:06:36,505 INFO L226 Difference]: Without dead ends: 42 [2018-12-02 14:06:36,506 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2018-12-02 14:06:36,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2018-12-02 14:06:36,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 40. [2018-12-02 14:06:36,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-12-02 14:06:36,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 47 transitions. [2018-12-02 14:06:36,509 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 47 transitions. Word has length 25 [2018-12-02 14:06:36,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 14:06:36,509 INFO L480 AbstractCegarLoop]: Abstraction has 40 states and 47 transitions. [2018-12-02 14:06:36,509 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-12-02 14:06:36,509 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 47 transitions. [2018-12-02 14:06:36,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-12-02 14:06:36,509 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 14:06:36,510 INFO L402 BasicCegarLoop]: trace histogram [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] [2018-12-02 14:06:36,510 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 14:06:36,510 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 14:06:36,510 INFO L82 PathProgramCache]: Analyzing trace with hash 1438845801, now seen corresponding path program 1 times [2018-12-02 14:06:36,510 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-02 14:06:36,511 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1c6a57ca-3765-457b-866e-3b86c38175d9/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 [2018-12-02 14:06:36,514 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 14:06:36,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 14:06:36,567 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 14:06:36,576 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-12-02 14:06:36,576 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-02 14:06:36,585 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 14:06:36,586 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-02 14:06:36,586 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-02 14:06:36,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-02 14:06:36,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-02 14:06:36,587 INFO L87 Difference]: Start difference. First operand 40 states and 47 transitions. Second operand 4 states. [2018-12-02 14:06:36,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 14:06:36,623 INFO L93 Difference]: Finished difference Result 58 states and 67 transitions. [2018-12-02 14:06:36,623 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-02 14:06:36,623 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2018-12-02 14:06:36,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 14:06:36,624 INFO L225 Difference]: With dead ends: 58 [2018-12-02 14:06:36,624 INFO L226 Difference]: Without dead ends: 43 [2018-12-02 14:06:36,624 INFO L631 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 [2018-12-02 14:06:36,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-12-02 14:06:36,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2018-12-02 14:06:36,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-12-02 14:06:36,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 51 transitions. [2018-12-02 14:06:36,628 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 51 transitions. Word has length 30 [2018-12-02 14:06:36,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 14:06:36,628 INFO L480 AbstractCegarLoop]: Abstraction has 43 states and 51 transitions. [2018-12-02 14:06:36,628 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-02 14:06:36,628 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 51 transitions. [2018-12-02 14:06:36,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-12-02 14:06:36,629 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 14:06:36,629 INFO L402 BasicCegarLoop]: trace histogram [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] [2018-12-02 14:06:36,629 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 14:06:36,629 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 14:06:36,629 INFO L82 PathProgramCache]: Analyzing trace with hash 394703345, now seen corresponding path program 1 times [2018-12-02 14:06:36,630 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-02 14:06:36,630 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1c6a57ca-3765-457b-866e-3b86c38175d9/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 [2018-12-02 14:06:36,633 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 14:06:36,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 14:06:36,684 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 14:06:36,821 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-12-02 14:06:36,821 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-02 14:06:36,829 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 14:06:36,829 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-12-02 14:06:36,829 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-12-02 14:06:36,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-12-02 14:06:36,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-12-02 14:06:36,830 INFO L87 Difference]: Start difference. First operand 43 states and 51 transitions. Second operand 8 states. [2018-12-02 14:06:37,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 14:06:37,725 INFO L93 Difference]: Finished difference Result 63 states and 73 transitions. [2018-12-02 14:06:37,726 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-12-02 14:06:37,726 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 31 [2018-12-02 14:06:37,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 14:06:37,726 INFO L225 Difference]: With dead ends: 63 [2018-12-02 14:06:37,727 INFO L226 Difference]: Without dead ends: 43 [2018-12-02 14:06:37,727 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2018-12-02 14:06:37,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-12-02 14:06:37,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2018-12-02 14:06:37,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-12-02 14:06:37,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 50 transitions. [2018-12-02 14:06:37,730 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 50 transitions. Word has length 31 [2018-12-02 14:06:37,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 14:06:37,730 INFO L480 AbstractCegarLoop]: Abstraction has 43 states and 50 transitions. [2018-12-02 14:06:37,730 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-12-02 14:06:37,730 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 50 transitions. [2018-12-02 14:06:37,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-12-02 14:06:37,731 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 14:06:37,731 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 14:06:37,731 INFO L423 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 14:06:37,731 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 14:06:37,731 INFO L82 PathProgramCache]: Analyzing trace with hash 1599971557, now seen corresponding path program 1 times [2018-12-02 14:06:37,732 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-02 14:06:37,732 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1c6a57ca-3765-457b-866e-3b86c38175d9/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 [2018-12-02 14:06:37,735 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 14:06:37,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 14:06:37,787 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 14:06:37,794 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-12-02 14:06:37,794 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-02 14:06:37,801 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 14:06:37,802 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-02 14:06:37,802 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-02 14:06:37,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-02 14:06:37,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-02 14:06:37,802 INFO L87 Difference]: Start difference. First operand 43 states and 50 transitions. Second operand 4 states. [2018-12-02 14:06:37,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 14:06:37,838 INFO L93 Difference]: Finished difference Result 59 states and 67 transitions. [2018-12-02 14:06:37,839 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-02 14:06:37,839 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 32 [2018-12-02 14:06:37,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 14:06:37,839 INFO L225 Difference]: With dead ends: 59 [2018-12-02 14:06:37,840 INFO L226 Difference]: Without dead ends: 44 [2018-12-02 14:06:37,840 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-02 14:06:37,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-12-02 14:06:37,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 41. [2018-12-02 14:06:37,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-12-02 14:06:37,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 47 transitions. [2018-12-02 14:06:37,843 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 47 transitions. Word has length 32 [2018-12-02 14:06:37,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 14:06:37,843 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 47 transitions. [2018-12-02 14:06:37,844 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-02 14:06:37,844 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 47 transitions. [2018-12-02 14:06:37,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-12-02 14:06:37,844 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 14:06:37,844 INFO L402 BasicCegarLoop]: trace histogram [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] [2018-12-02 14:06:37,845 INFO L423 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 14:06:37,845 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 14:06:37,845 INFO L82 PathProgramCache]: Analyzing trace with hash 1200719566, now seen corresponding path program 1 times [2018-12-02 14:06:37,845 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-02 14:06:37,845 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1c6a57ca-3765-457b-866e-3b86c38175d9/bin-2019/uautomizer/mathsat Starting monitored process 10 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with mathsat -unsat_core_generation=3 [2018-12-02 14:06:37,848 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 14:06:37,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 14:06:37,902 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 14:06:37,956 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-12-02 14:06:37,956 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-02 14:06:37,963 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 14:06:37,964 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-12-02 14:06:37,964 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-02 14:06:37,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-02 14:06:37,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-12-02 14:06:37,964 INFO L87 Difference]: Start difference. First operand 41 states and 47 transitions. Second operand 5 states. [2018-12-02 14:06:38,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 14:06:38,087 INFO L93 Difference]: Finished difference Result 57 states and 63 transitions. [2018-12-02 14:06:38,088 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-02 14:06:38,088 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 32 [2018-12-02 14:06:38,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 14:06:38,089 INFO L225 Difference]: With dead ends: 57 [2018-12-02 14:06:38,089 INFO L226 Difference]: Without dead ends: 41 [2018-12-02 14:06:38,089 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-12-02 14:06:38,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-12-02 14:06:38,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2018-12-02 14:06:38,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-12-02 14:06:38,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 46 transitions. [2018-12-02 14:06:38,092 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 46 transitions. Word has length 32 [2018-12-02 14:06:38,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 14:06:38,092 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 46 transitions. [2018-12-02 14:06:38,092 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-02 14:06:38,092 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 46 transitions. [2018-12-02 14:06:38,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-12-02 14:06:38,093 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 14:06:38,093 INFO L402 BasicCegarLoop]: trace histogram [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] [2018-12-02 14:06:38,093 INFO L423 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 14:06:38,093 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 14:06:38,093 INFO L82 PathProgramCache]: Analyzing trace with hash 391372940, now seen corresponding path program 1 times [2018-12-02 14:06:38,093 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-02 14:06:38,093 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1c6a57ca-3765-457b-866e-3b86c38175d9/bin-2019/uautomizer/mathsat Starting monitored process 11 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with mathsat -unsat_core_generation=3 [2018-12-02 14:06:38,096 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 14:06:38,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 14:06:38,148 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 14:06:38,210 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-12-02 14:06:38,210 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-02 14:06:38,221 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 14:06:38,221 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-12-02 14:06:38,222 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-12-02 14:06:38,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-12-02 14:06:38,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-12-02 14:06:38,222 INFO L87 Difference]: Start difference. First operand 41 states and 46 transitions. Second operand 8 states. [2018-12-02 14:06:38,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 14:06:38,562 INFO L93 Difference]: Finished difference Result 48 states and 53 transitions. [2018-12-02 14:06:38,562 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-12-02 14:06:38,563 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 32 [2018-12-02 14:06:38,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 14:06:38,563 INFO L225 Difference]: With dead ends: 48 [2018-12-02 14:06:38,563 INFO L226 Difference]: Without dead ends: 45 [2018-12-02 14:06:38,563 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2018-12-02 14:06:38,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2018-12-02 14:06:38,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2018-12-02 14:06:38,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2018-12-02 14:06:38,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 50 transitions. [2018-12-02 14:06:38,566 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 50 transitions. Word has length 32 [2018-12-02 14:06:38,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 14:06:38,566 INFO L480 AbstractCegarLoop]: Abstraction has 45 states and 50 transitions. [2018-12-02 14:06:38,566 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-12-02 14:06:38,566 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 50 transitions. [2018-12-02 14:06:38,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-12-02 14:06:38,567 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 14:06:38,567 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 14:06:38,567 INFO L423 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 14:06:38,567 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 14:06:38,567 INFO L82 PathProgramCache]: Analyzing trace with hash -477473555, now seen corresponding path program 1 times [2018-12-02 14:06:38,567 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-02 14:06:38,567 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1c6a57ca-3765-457b-866e-3b86c38175d9/bin-2019/uautomizer/mathsat Starting monitored process 12 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with mathsat -unsat_core_generation=3 [2018-12-02 14:06:38,571 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 14:06:38,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 14:06:38,622 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 14:06:38,708 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-12-02 14:06:38,708 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-02 14:06:38,716 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 14:06:38,716 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-12-02 14:06:38,716 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-12-02 14:06:38,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-12-02 14:06:38,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-12-02 14:06:38,717 INFO L87 Difference]: Start difference. First operand 45 states and 50 transitions. Second operand 8 states. [2018-12-02 14:06:39,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 14:06:39,356 INFO L93 Difference]: Finished difference Result 62 states and 66 transitions. [2018-12-02 14:06:39,357 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-12-02 14:06:39,357 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 33 [2018-12-02 14:06:39,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 14:06:39,358 INFO L225 Difference]: With dead ends: 62 [2018-12-02 14:06:39,358 INFO L226 Difference]: Without dead ends: 37 [2018-12-02 14:06:39,358 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2018-12-02 14:06:39,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2018-12-02 14:06:39,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2018-12-02 14:06:39,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-12-02 14:06:39,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 38 transitions. [2018-12-02 14:06:39,360 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 38 transitions. Word has length 33 [2018-12-02 14:06:39,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 14:06:39,360 INFO L480 AbstractCegarLoop]: Abstraction has 37 states and 38 transitions. [2018-12-02 14:06:39,360 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-12-02 14:06:39,360 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 38 transitions. [2018-12-02 14:06:39,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-12-02 14:06:39,361 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 14:06:39,361 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 14:06:39,361 INFO L423 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 14:06:39,361 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 14:06:39,361 INFO L82 PathProgramCache]: Analyzing trace with hash -25386389, now seen corresponding path program 1 times [2018-12-02 14:06:39,361 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-02 14:06:39,361 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1c6a57ca-3765-457b-866e-3b86c38175d9/bin-2019/uautomizer/mathsat Starting monitored process 13 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with mathsat -unsat_core_generation=3 [2018-12-02 14:06:39,364 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 14:06:39,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-02 14:06:39,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-02 14:06:39,605 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-12-02 14:06:39,632 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 02:06:39 BoogieIcfgContainer [2018-12-02 14:06:39,632 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-02 14:06:39,632 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-02 14:06:39,632 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-02 14:06:39,632 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-02 14:06:39,632 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 02:06:33" (3/4) ... [2018-12-02 14:06:39,634 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-12-02 14:06:39,682 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_1c6a57ca-3765-457b-866e-3b86c38175d9/bin-2019/uautomizer/witness.graphml [2018-12-02 14:06:39,682 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-02 14:06:39,683 INFO L168 Benchmark]: Toolchain (without parser) took 6172.34 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 193.5 MB). Free memory was 943.3 MB in the beginning and 1.1 GB in the end (delta: -174.5 MB). Peak memory consumption was 18.9 MB. Max. memory is 11.5 GB. [2018-12-02 14:06:39,684 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 1.0 GB. Free memory is still 972.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-02 14:06:39,684 INFO L168 Benchmark]: CACSL2BoogieTranslator took 158.54 ms. Allocated memory is still 1.0 GB. Free memory was 943.3 MB in the beginning and 927.2 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. [2018-12-02 14:06:39,684 INFO L168 Benchmark]: Boogie Procedure Inliner took 19.69 ms. Allocated memory is still 1.0 GB. Free memory is still 927.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-02 14:06:39,685 INFO L168 Benchmark]: Boogie Preprocessor took 19.66 ms. Allocated memory is still 1.0 GB. Free memory is still 927.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-02 14:06:39,685 INFO L168 Benchmark]: RCFGBuilder took 267.28 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 130.5 MB). Free memory was 927.2 MB in the beginning and 1.1 GB in the end (delta: -172.8 MB). Peak memory consumption was 14.1 MB. Max. memory is 11.5 GB. [2018-12-02 14:06:39,685 INFO L168 Benchmark]: TraceAbstraction took 5653.97 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 62.9 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -17.9 MB). Peak memory consumption was 45.0 MB. Max. memory is 11.5 GB. [2018-12-02 14:06:39,685 INFO L168 Benchmark]: Witness Printer took 50.44 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. [2018-12-02 14:06:39,687 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 1.0 GB. Free memory is still 972.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 158.54 ms. Allocated memory is still 1.0 GB. Free memory was 943.3 MB in the beginning and 927.2 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 19.69 ms. Allocated memory is still 1.0 GB. Free memory is still 927.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 19.66 ms. Allocated memory is still 1.0 GB. Free memory is still 927.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 267.28 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 130.5 MB). Free memory was 927.2 MB in the beginning and 1.1 GB in the end (delta: -172.8 MB). Peak memory consumption was 14.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 5653.97 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 62.9 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -17.9 MB). Peak memory consumption was 45.0 MB. Max. memory is 11.5 GB. * Witness Printer took 50.44 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: - CounterExampleResult [Line: 80]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L74] double x = -0.0; [L75] double y = 0.0; VAL [x=0.0, y=0.0] [L76] CALL, EXPR fmin_double(x, y) VAL [\old(x)=0.0, \old(y)=0.0] [L46] CALL, EXPR __fpclassify_double(x) VAL [\old(x)=0.0] [L19] __uint32_t msw, lsw; VAL [\old(x)=0.0, x=0.0] [L22] ieee_double_shape_type ew_u; [L23] ew_u.value = (x) [L24] EXPR ew_u.parts.msw [L24] (msw) = ew_u.parts.msw [L25] EXPR ew_u.parts.lsw [L25] (lsw) = ew_u.parts.lsw [L28-L29] COND TRUE (msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000) [L30] return 2; VAL [\old(x)=0.0, \result=2, lsw=0, msw=-2147483648, x=0.0] [L46] RET, EXPR __fpclassify_double(x) VAL [\old(x)=0.0, \old(y)=0.0, __fpclassify_double(x)=2, x=0.0, y=0.0] [L46] COND FALSE !(__fpclassify_double(x) == 0) [L48] CALL, EXPR __fpclassify_double(y) VAL [\old(x)=0.0] [L19] __uint32_t msw, lsw; VAL [\old(x)=0.0, x=0.0] [L22] ieee_double_shape_type ew_u; [L23] ew_u.value = (x) [L24] EXPR ew_u.parts.msw [L24] (msw) = ew_u.parts.msw [L25] EXPR ew_u.parts.lsw [L25] (lsw) = ew_u.parts.lsw [L28-L29] COND TRUE (msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000) [L30] return 2; VAL [\old(x)=0.0, \result=2, lsw=0, msw=0, x=0.0] [L48] RET, EXPR __fpclassify_double(y) VAL [\old(x)=0.0, \old(y)=0.0, __fpclassify_double(y)=2, x=0.0, y=0.0] [L48] COND FALSE !(__fpclassify_double(y) == 0) [L51] EXPR x < y ? x : y VAL [\old(x)=0.0, \old(y)=0.0, x=0.0, x < y ? x : y=0.0, y=0.0] [L51] return x < y ? x : y; [L76] RET, EXPR fmin_double(x, y) VAL [fmin_double(x, y)=0.0, x=0.0, y=0.0] [L76] double res = fmin_double(x, y); [L79] EXPR res == -0.0 && __signbit_double(res) == 1 VAL [res=0.0, res == -0.0 && __signbit_double(res) == 1=1, x=0.0, y=0.0] [L79] CALL, EXPR __signbit_double(res) VAL [\old(x)=0.0] [L55] __uint32_t msw; VAL [\old(x)=0.0, x=0.0] [L58] ieee_double_shape_type gh_u; [L59] gh_u.value = (x) [L60] EXPR gh_u.parts.msw [L60] (msw) = gh_u.parts.msw [L63] return (msw & 0x80000000) != 0; VAL [\old(x)=0.0, \result=0, msw=0, x=0.0] [L79] RET, EXPR __signbit_double(res) VAL [__signbit_double(res)=0, res=0.0, res == -0.0 && __signbit_double(res) == 1=1, x=0.0, y=0.0] [L79] EXPR res == -0.0 && __signbit_double(res) == 1 VAL [__signbit_double(res)=0, res=0.0, res == -0.0 && __signbit_double(res) == 1=0, x=0.0, y=0.0] [L79] COND TRUE !(res == -0.0 && __signbit_double(res) == 1) [L80] __VERIFIER_error() VAL [res=0.0, x=0.0, y=0.0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 42 locations, 1 error locations. UNSAFE Result, 5.6s OverallTime, 12 OverallIterations, 2 TraceHistogramMax, 3.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 452 SDtfs, 177 SDslu, 1317 SDs, 0 SdLazy, 513 SolverSat, 11 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 315 GetRequests, 256 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=45occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 11 MinimizatonAttempts, 8 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 345 NumberOfCodeBlocks, 345 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 294 ConstructedInterpolants, 36 QuantifiedInterpolants, 34701 SizeOfPredicates, 23 NumberOfNonLiveVariables, 957 ConjunctsInSsa, 65 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 PerfectInterpolantSequences, 36/36 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...