./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_1232b_false-unreach-call.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 1dbac8bc Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_8beb70c4-417c-4cd4-9abf-f37ee20ceeb5/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_8beb70c4-417c-4cd4-9abf-f37ee20ceeb5/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_8beb70c4-417c-4cd4-9abf-f37ee20ceeb5/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_8beb70c4-417c-4cd4-9abf-f37ee20ceeb5/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1232b_false-unreach-call.c -s /tmp/vcloud-vcloud-master/worker/working_dir_8beb70c4-417c-4cd4-9abf-f37ee20ceeb5/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_8beb70c4-417c-4cd4-9abf-f37ee20ceeb5/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 36a0a55241cede481b157c1ab9f348d708a5b166 ............................................................................................................................................................................................................................................................................................................................................................................................. 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_8beb70c4-417c-4cd4-9abf-f37ee20ceeb5/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_8beb70c4-417c-4cd4-9abf-f37ee20ceeb5/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_8beb70c4-417c-4cd4-9abf-f37ee20ceeb5/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_8beb70c4-417c-4cd4-9abf-f37ee20ceeb5/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1232b_false-unreach-call.c -s /tmp/vcloud-vcloud-master/worker/working_dir_8beb70c4-417c-4cd4-9abf-f37ee20ceeb5/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_8beb70c4-417c-4cd4-9abf-f37ee20ceeb5/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 36a0a55241cede481b157c1ab9f348d708a5b166 ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 0.1.23-1dbac8b [2018-11-10 04:55:23,086 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-10 04:55:23,088 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-10 04:55:23,095 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-10 04:55:23,095 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-10 04:55:23,095 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-10 04:55:23,096 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-10 04:55:23,098 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-10 04:55:23,099 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-10 04:55:23,099 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-10 04:55:23,100 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-10 04:55:23,100 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-10 04:55:23,101 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-10 04:55:23,102 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-10 04:55:23,103 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-10 04:55:23,103 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-10 04:55:23,104 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-10 04:55:23,105 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-10 04:55:23,107 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-10 04:55:23,107 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-10 04:55:23,108 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-10 04:55:23,109 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-10 04:55:23,111 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-10 04:55:23,111 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-10 04:55:23,111 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-10 04:55:23,111 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-10 04:55:23,112 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-10 04:55:23,112 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-10 04:55:23,113 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-10 04:55:23,113 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-10 04:55:23,114 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-10 04:55:23,114 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-10 04:55:23,114 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-10 04:55:23,114 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-10 04:55:23,115 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-10 04:55:23,115 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-10 04:55:23,115 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_8beb70c4-417c-4cd4-9abf-f37ee20ceeb5/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-11-10 04:55:23,125 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-10 04:55:23,125 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-10 04:55:23,126 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-10 04:55:23,126 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-11-10 04:55:23,127 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-10 04:55:23,127 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-10 04:55:23,127 INFO L133 SettingsManager]: * Use SBE=true [2018-11-10 04:55:23,127 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-10 04:55:23,127 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-10 04:55:23,128 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-10 04:55:23,128 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-10 04:55:23,128 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-10 04:55:23,128 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-10 04:55:23,128 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-10 04:55:23,128 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-10 04:55:23,128 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-10 04:55:23,128 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-10 04:55:23,129 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-10 04:55:23,129 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-10 04:55:23,129 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-10 04:55:23,129 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-10 04:55:23,129 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-10 04:55:23,129 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-10 04:55:23,129 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-10 04:55:23,130 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-10 04:55:23,130 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-10 04:55:23,130 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-10 04:55:23,130 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-10 04:55:23,130 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-10 04:55:23,130 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_8beb70c4-417c-4cd4-9abf-f37ee20ceeb5/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 -> 36a0a55241cede481b157c1ab9f348d708a5b166 [2018-11-10 04:55:23,154 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-10 04:55:23,163 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-10 04:55:23,166 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-10 04:55:23,167 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-10 04:55:23,167 INFO L276 PluginConnector]: CDTParser initialized [2018-11-10 04:55:23,168 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_8beb70c4-417c-4cd4-9abf-f37ee20ceeb5/bin-2019/uautomizer/../../sv-benchmarks/c/float-newlib/float_req_bl_1232b_false-unreach-call.c [2018-11-10 04:55:23,210 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_8beb70c4-417c-4cd4-9abf-f37ee20ceeb5/bin-2019/uautomizer/data/9b0b923fa/66e5e3a7764c45b3af10bc27c6d2e879/FLAG1847758e1 [2018-11-10 04:55:23,521 INFO L298 CDTParser]: Found 1 translation units. [2018-11-10 04:55:23,522 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_8beb70c4-417c-4cd4-9abf-f37ee20ceeb5/sv-benchmarks/c/float-newlib/float_req_bl_1232b_false-unreach-call.c [2018-11-10 04:55:23,526 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_8beb70c4-417c-4cd4-9abf-f37ee20ceeb5/bin-2019/uautomizer/data/9b0b923fa/66e5e3a7764c45b3af10bc27c6d2e879/FLAG1847758e1 [2018-11-10 04:55:23,538 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_8beb70c4-417c-4cd4-9abf-f37ee20ceeb5/bin-2019/uautomizer/data/9b0b923fa/66e5e3a7764c45b3af10bc27c6d2e879 [2018-11-10 04:55:23,541 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-10 04:55:23,542 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-10 04:55:23,543 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-10 04:55:23,543 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-10 04:55:23,547 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-10 04:55:23,548 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 04:55:23" (1/1) ... [2018-11-10 04:55:23,551 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1183f8d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 04:55:23, skipping insertion in model container [2018-11-10 04:55:23,551 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 04:55:23" (1/1) ... [2018-11-10 04:55:23,560 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-10 04:55:23,578 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-10 04:55:23,694 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 04:55:23,696 INFO L189 MainTranslator]: Completed pre-run [2018-11-10 04:55:23,710 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 04:55:23,723 INFO L193 MainTranslator]: Completed translation [2018-11-10 04:55:23,724 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 04:55:23 WrapperNode [2018-11-10 04:55:23,724 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-10 04:55:23,724 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-10 04:55:23,724 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-10 04:55:23,724 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-10 04:55:23,733 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 04:55:23" (1/1) ... [2018-11-10 04:55:23,733 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 04:55:23" (1/1) ... [2018-11-10 04:55:23,741 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 04:55:23" (1/1) ... [2018-11-10 04:55:23,741 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 04:55:23" (1/1) ... [2018-11-10 04:55:23,747 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 04:55:23" (1/1) ... [2018-11-10 04:55:23,750 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 04:55:23" (1/1) ... [2018-11-10 04:55:23,751 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 04:55:23" (1/1) ... [2018-11-10 04:55:23,752 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-10 04:55:23,753 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-10 04:55:23,753 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-10 04:55:23,753 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-10 04:55:23,753 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 04:55:23" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8beb70c4-417c-4cd4-9abf-f37ee20ceeb5/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 [2018-11-10 04:55:23,828 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-10 04:55:23,828 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-10 04:55:23,828 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_float [2018-11-10 04:55:23,828 INFO L138 BoogieDeclarations]: Found implementation of procedure fmin_float [2018-11-10 04:55:23,828 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_float [2018-11-10 04:55:23,828 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-10 04:55:23,828 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-11-10 04:55:23,829 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2018-11-10 04:55:23,829 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_float [2018-11-10 04:55:23,829 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-10 04:55:23,829 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2018-11-10 04:55:23,829 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-11-10 04:55:23,829 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-10 04:55:23,829 INFO L130 BoogieDeclarations]: Found specification of procedure fmin_float [2018-11-10 04:55:23,829 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_float [2018-11-10 04:55:23,829 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-10 04:55:23,830 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-10 04:55:23,830 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-10 04:55:23,830 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real [2018-11-10 04:55:23,830 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2018-11-10 04:55:23,830 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2018-11-10 04:55:23,830 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-11-10 04:55:24,042 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-10 04:55:24,042 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 04:55:24 BoogieIcfgContainer [2018-11-10 04:55:24,042 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-10 04:55:24,043 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-10 04:55:24,043 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-10 04:55:24,046 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-10 04:55:24,046 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 04:55:23" (1/3) ... [2018-11-10 04:55:24,047 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52fb901 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 04:55:24, skipping insertion in model container [2018-11-10 04:55:24,047 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 04:55:23" (2/3) ... [2018-11-10 04:55:24,047 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52fb901 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 04:55:24, skipping insertion in model container [2018-11-10 04:55:24,047 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 04:55:24" (3/3) ... [2018-11-10 04:55:24,049 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_1232b_false-unreach-call.c [2018-11-10 04:55:24,055 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-10 04:55:24,060 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-10 04:55:24,070 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-10 04:55:24,095 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-11-10 04:55:24,096 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-10 04:55:24,096 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-10 04:55:24,096 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-10 04:55:24,096 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-10 04:55:24,096 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-10 04:55:24,096 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-10 04:55:24,096 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-10 04:55:24,097 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-10 04:55:24,111 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states. [2018-11-10 04:55:24,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-11-10 04:55:24,115 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 04:55:24,115 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 04:55:24,117 INFO L424 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 04:55:24,120 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:55:24,120 INFO L82 PathProgramCache]: Analyzing trace with hash 969493283, now seen corresponding path program 1 times [2018-11-10 04:55:24,121 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 04:55:24,122 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 04:55:24,158 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:55:24,158 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 04:55:24,158 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:55:24,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:55:24,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 04:55:24,216 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 04:55:24,216 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-10 04:55:24,219 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-10 04:55:24,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-10 04:55:24,229 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-10 04:55:24,231 INFO L87 Difference]: Start difference. First operand 60 states. Second operand 2 states. [2018-11-10 04:55:24,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 04:55:24,251 INFO L93 Difference]: Finished difference Result 111 states and 139 transitions. [2018-11-10 04:55:24,251 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-10 04:55:24,252 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 22 [2018-11-10 04:55:24,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 04:55:24,259 INFO L225 Difference]: With dead ends: 111 [2018-11-10 04:55:24,259 INFO L226 Difference]: Without dead ends: 56 [2018-11-10 04:55:24,261 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-10 04:55:24,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2018-11-10 04:55:24,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2018-11-10 04:55:24,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2018-11-10 04:55:24,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 64 transitions. [2018-11-10 04:55:24,292 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 64 transitions. Word has length 22 [2018-11-10 04:55:24,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 04:55:24,292 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 64 transitions. [2018-11-10 04:55:24,292 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-10 04:55:24,292 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 64 transitions. [2018-11-10 04:55:24,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-11-10 04:55:24,294 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 04:55:24,294 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 04:55:24,294 INFO L424 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 04:55:24,295 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:55:24,295 INFO L82 PathProgramCache]: Analyzing trace with hash -228670553, now seen corresponding path program 1 times [2018-11-10 04:55:24,295 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 04:55:24,295 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 04:55:24,296 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:55:24,296 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 04:55:24,296 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:55:24,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:55:24,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 04:55:24,375 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 04:55:24,375 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-10 04:55:24,376 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-10 04:55:24,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-10 04:55:24,377 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-10 04:55:24,377 INFO L87 Difference]: Start difference. First operand 56 states and 64 transitions. Second operand 4 states. [2018-11-10 04:55:24,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 04:55:24,406 INFO L93 Difference]: Finished difference Result 83 states and 93 transitions. [2018-11-10 04:55:24,406 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-10 04:55:24,406 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 31 [2018-11-10 04:55:24,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 04:55:24,411 INFO L225 Difference]: With dead ends: 83 [2018-11-10 04:55:24,411 INFO L226 Difference]: Without dead ends: 60 [2018-11-10 04:55:24,412 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-10 04:55:24,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2018-11-10 04:55:24,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2018-11-10 04:55:24,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2018-11-10 04:55:24,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 69 transitions. [2018-11-10 04:55:24,421 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 69 transitions. Word has length 31 [2018-11-10 04:55:24,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 04:55:24,421 INFO L481 AbstractCegarLoop]: Abstraction has 60 states and 69 transitions. [2018-11-10 04:55:24,421 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-10 04:55:24,421 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 69 transitions. [2018-11-10 04:55:24,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-11-10 04:55:24,422 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 04:55:24,422 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 04:55:24,422 INFO L424 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 04:55:24,423 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:55:24,423 INFO L82 PathProgramCache]: Analyzing trace with hash 738637230, now seen corresponding path program 1 times [2018-11-10 04:55:24,423 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 04:55:24,423 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 04:55:24,424 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:55:24,424 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 04:55:24,424 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:55:24,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:55:24,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 04:55:24,474 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 04:55:24,474 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-10 04:55:24,474 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-10 04:55:24,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-10 04:55:24,475 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-10 04:55:24,475 INFO L87 Difference]: Start difference. First operand 60 states and 69 transitions. Second operand 4 states. [2018-11-10 04:55:24,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 04:55:24,518 INFO L93 Difference]: Finished difference Result 87 states and 98 transitions. [2018-11-10 04:55:24,518 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-10 04:55:24,518 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 34 [2018-11-10 04:55:24,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 04:55:24,520 INFO L225 Difference]: With dead ends: 87 [2018-11-10 04:55:24,520 INFO L226 Difference]: Without dead ends: 64 [2018-11-10 04:55:24,520 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-10 04:55:24,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2018-11-10 04:55:24,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 60. [2018-11-10 04:55:24,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2018-11-10 04:55:24,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 69 transitions. [2018-11-10 04:55:24,526 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 69 transitions. Word has length 34 [2018-11-10 04:55:24,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 04:55:24,526 INFO L481 AbstractCegarLoop]: Abstraction has 60 states and 69 transitions. [2018-11-10 04:55:24,527 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-10 04:55:24,527 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 69 transitions. [2018-11-10 04:55:24,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-11-10 04:55:24,527 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 04:55:24,527 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 04:55:24,527 INFO L424 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 04:55:24,527 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:55:24,528 INFO L82 PathProgramCache]: Analyzing trace with hash -1058314129, now seen corresponding path program 1 times [2018-11-10 04:55:24,528 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 04:55:24,528 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 04:55:24,528 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:55:24,529 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 04:55:24,529 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:55:24,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 04:55:24,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 04:55:24,573 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-11-10 04:55:24,594 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.11 04:55:24 BoogieIcfgContainer [2018-11-10 04:55:24,594 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-10 04:55:24,594 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-10 04:55:24,594 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-10 04:55:24,594 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-10 04:55:24,594 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 04:55:24" (3/4) ... [2018-11-10 04:55:24,597 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-11-10 04:55:24,597 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-10 04:55:24,597 INFO L168 Benchmark]: Toolchain (without parser) took 1056.17 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 126.4 MB). Free memory was 960.3 MB in the beginning and 1.1 GB in the end (delta: -92.6 MB). Peak memory consumption was 33.7 MB. Max. memory is 11.5 GB. [2018-11-10 04:55:24,598 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 985.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 04:55:24,599 INFO L168 Benchmark]: CACSL2BoogieTranslator took 181.13 ms. Allocated memory is still 1.0 GB. Free memory was 960.3 MB in the beginning and 949.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-10 04:55:24,599 INFO L168 Benchmark]: Boogie Preprocessor took 28.30 ms. Allocated memory is still 1.0 GB. Free memory was 949.6 MB in the beginning and 945.8 MB in the end (delta: 3.8 MB). Peak memory consumption was 3.8 MB. Max. memory is 11.5 GB. [2018-11-10 04:55:24,600 INFO L168 Benchmark]: RCFGBuilder took 289.82 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 126.4 MB). Free memory was 945.8 MB in the beginning and 1.1 GB in the end (delta: -158.1 MB). Peak memory consumption was 14.7 MB. Max. memory is 11.5 GB. [2018-11-10 04:55:24,600 INFO L168 Benchmark]: TraceAbstraction took 550.62 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: 51.0 MB). Peak memory consumption was 51.0 MB. Max. memory is 11.5 GB. [2018-11-10 04:55:24,601 INFO L168 Benchmark]: Witness Printer took 2.96 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. [2018-11-10 04:55:24,603 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 985.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 181.13 ms. Allocated memory is still 1.0 GB. Free memory was 960.3 MB in the beginning and 949.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 28.30 ms. Allocated memory is still 1.0 GB. Free memory was 949.6 MB in the beginning and 945.8 MB in the end (delta: 3.8 MB). Peak memory consumption was 3.8 MB. Max. memory is 11.5 GB. * RCFGBuilder took 289.82 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 126.4 MB). Free memory was 945.8 MB in the beginning and 1.1 GB in the end (delta: -158.1 MB). Peak memory consumption was 14.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 550.62 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: 51.0 MB). Peak memory consumption was 51.0 MB. Max. memory is 11.5 GB. * Witness Printer took 2.96 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 70]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 69, overapproximation of someUnaryFLOAToperation at line 64. Possible FailurePath: [L64] float x = -0.0f; [L65] float y = 0.0f; VAL [y=0] [L66] CALL, EXPR fmin_float(x, y) VAL [\old(x)=2139095043, \old(y)=0] [L36] CALL, EXPR __fpclassify_float(x) VAL [\old(x)=2139095043] [L13] __uint32_t w; VAL [\old(x)=2139095043, x=2139095043] [L16] FCALL ieee_float_shape_type gf_u; VAL [\old(x)=2139095043, gf_u={2139095046:0}, x=2139095043] [L17] FCALL gf_u.value = (x) VAL [\old(x)=2139095043, gf_u={2139095046:0}, x=2139095043] [L18] EXPR, FCALL gf_u.word VAL [\old(x)=2139095043, gf_u={2139095046:0}, gf_u.word=2139095041, x=2139095043] [L18] (w) = gf_u.word [L19] COND FALSE !(0) VAL [\old(x)=2139095043, w=2139095041, x=2139095043] [L21] COND FALSE !(w == 0x00000000 || w == 0x80000000) VAL [\old(x)=2139095043, w=2139095041, x=2139095043] [L23-L24] COND FALSE !((w >= 0x00800000 && w <= 0x7f7fffff) || (w >= 0x80800000 && w <= 0xff7fffff)) VAL [\old(x)=2139095043, w=2139095041, x=2139095043] [L26-L27] COND FALSE !((w >= 0x00000001 && w <= 0x007fffff) || (w >= 0x80000001 && w <= 0x807fffff)) VAL [\old(x)=2139095043, w=2139095041, x=2139095043] [L29] COND FALSE !(w == 0x7f800000 || w == 0xff800000) [L32] RET return 0; VAL [\old(x)=2139095043, \result=0, w=2139095041, x=2139095043] [L36] EXPR __fpclassify_float(x) VAL [\old(x)=2139095043, \old(y)=0, __fpclassify_float(x)=0, x=2139095043, y=0] [L36] COND TRUE __fpclassify_float(x) == 0 [L37] RET return y; VAL [\old(x)=2139095043, \old(y)=0, \result=0, x=2139095043, y=0] [L66] EXPR fmin_float(x, y) VAL [fmin_float(x, y)=0, x=2139095043, y=0] [L66] float res = fmin_float(x, y); [L69] EXPR res == -0.0f && __signbit_float(res) == 1 VAL [res=0, res == -0.0f && __signbit_float(res) == 1=0, x=2139095043, y=0] [L69] COND TRUE !(res == -0.0f && __signbit_float(res) == 1) [L70] __VERIFIER_error() VAL [res=0, x=2139095043, y=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 60 locations, 1 error locations. UNSAFE Result, 0.5s OverallTime, 4 OverallIterations, 1 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 197 SDtfs, 0 SDslu, 242 SDs, 0 SdLazy, 21 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s 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=60occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 4 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 121 NumberOfCodeBlocks, 121 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 84 ConstructedInterpolants, 0 QuantifiedInterpolants, 2934 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.23-1dbac8b [2018-11-10 04:55:26,091 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-10 04:55:26,092 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-10 04:55:26,100 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-10 04:55:26,101 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-10 04:55:26,101 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-10 04:55:26,102 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-10 04:55:26,103 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-10 04:55:26,104 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-10 04:55:26,105 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-10 04:55:26,105 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-10 04:55:26,106 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-10 04:55:26,106 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-10 04:55:26,107 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-10 04:55:26,108 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-10 04:55:26,108 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-10 04:55:26,109 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-10 04:55:26,110 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-10 04:55:26,111 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-10 04:55:26,112 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-10 04:55:26,113 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-10 04:55:26,114 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-10 04:55:26,116 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-10 04:55:26,116 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-10 04:55:26,116 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-10 04:55:26,117 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-10 04:55:26,117 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-10 04:55:26,118 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-10 04:55:26,118 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-10 04:55:26,119 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-10 04:55:26,119 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-10 04:55:26,120 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-10 04:55:26,120 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-10 04:55:26,120 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-10 04:55:26,121 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-10 04:55:26,121 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-10 04:55:26,121 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_8beb70c4-417c-4cd4-9abf-f37ee20ceeb5/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2018-11-10 04:55:26,131 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-10 04:55:26,131 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-10 04:55:26,132 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-10 04:55:26,132 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-11-10 04:55:26,133 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-10 04:55:26,133 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-10 04:55:26,133 INFO L133 SettingsManager]: * Use SBE=true [2018-11-10 04:55:26,133 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-10 04:55:26,133 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-10 04:55:26,134 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-10 04:55:26,134 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-10 04:55:26,134 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-10 04:55:26,134 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-10 04:55:26,134 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-10 04:55:26,134 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-11-10 04:55:26,134 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-11-10 04:55:26,134 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-10 04:55:26,135 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-10 04:55:26,135 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-10 04:55:26,135 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-10 04:55:26,135 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-10 04:55:26,135 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-10 04:55:26,135 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-10 04:55:26,135 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-10 04:55:26,136 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-10 04:55:26,136 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-10 04:55:26,136 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-10 04:55:26,136 INFO L133 SettingsManager]: * Trace refinement strategy=WOLF [2018-11-10 04:55:26,136 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-10 04:55:26,136 INFO L133 SettingsManager]: * Command for external solver=cvc4nyu --tear-down-incremental --rewrite-divk --print-success --lang smt [2018-11-10 04:55:26,136 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-11-10 04:55:26,136 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_8beb70c4-417c-4cd4-9abf-f37ee20ceeb5/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 -> 36a0a55241cede481b157c1ab9f348d708a5b166 [2018-11-10 04:55:26,166 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-10 04:55:26,175 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-10 04:55:26,178 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-10 04:55:26,179 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-10 04:55:26,180 INFO L276 PluginConnector]: CDTParser initialized [2018-11-10 04:55:26,180 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_8beb70c4-417c-4cd4-9abf-f37ee20ceeb5/bin-2019/uautomizer/../../sv-benchmarks/c/float-newlib/float_req_bl_1232b_false-unreach-call.c [2018-11-10 04:55:26,222 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_8beb70c4-417c-4cd4-9abf-f37ee20ceeb5/bin-2019/uautomizer/data/2303bc218/0c266b5e23164b058f964b34b572feff/FLAG8e1687b41 [2018-11-10 04:55:26,543 INFO L298 CDTParser]: Found 1 translation units. [2018-11-10 04:55:26,543 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_8beb70c4-417c-4cd4-9abf-f37ee20ceeb5/sv-benchmarks/c/float-newlib/float_req_bl_1232b_false-unreach-call.c [2018-11-10 04:55:26,547 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_8beb70c4-417c-4cd4-9abf-f37ee20ceeb5/bin-2019/uautomizer/data/2303bc218/0c266b5e23164b058f964b34b572feff/FLAG8e1687b41 [2018-11-10 04:55:26,558 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_8beb70c4-417c-4cd4-9abf-f37ee20ceeb5/bin-2019/uautomizer/data/2303bc218/0c266b5e23164b058f964b34b572feff [2018-11-10 04:55:26,560 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-10 04:55:26,561 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-10 04:55:26,562 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-10 04:55:26,562 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-10 04:55:26,565 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-10 04:55:26,566 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 04:55:26" (1/1) ... [2018-11-10 04:55:26,569 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@405a00e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 04:55:26, skipping insertion in model container [2018-11-10 04:55:26,569 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 04:55:26" (1/1) ... [2018-11-10 04:55:26,576 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-10 04:55:26,592 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-10 04:55:26,709 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 04:55:26,713 INFO L189 MainTranslator]: Completed pre-run [2018-11-10 04:55:26,731 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 04:55:26,747 INFO L193 MainTranslator]: Completed translation [2018-11-10 04:55:26,747 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 04:55:26 WrapperNode [2018-11-10 04:55:26,747 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-10 04:55:26,748 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-10 04:55:26,748 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-10 04:55:26,748 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-10 04:55:26,759 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 04:55:26" (1/1) ... [2018-11-10 04:55:26,759 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 04:55:26" (1/1) ... [2018-11-10 04:55:26,766 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 04:55:26" (1/1) ... [2018-11-10 04:55:26,766 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 04:55:26" (1/1) ... [2018-11-10 04:55:26,773 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 04:55:26" (1/1) ... [2018-11-10 04:55:26,777 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 04:55:26" (1/1) ... [2018-11-10 04:55:26,779 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 04:55:26" (1/1) ... [2018-11-10 04:55:26,782 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-10 04:55:26,782 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-10 04:55:26,782 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-10 04:55:26,782 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-10 04:55:26,783 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 04:55:26" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8beb70c4-417c-4cd4-9abf-f37ee20ceeb5/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 [2018-11-10 04:55:26,878 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-10 04:55:26,879 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-10 04:55:26,879 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_float [2018-11-10 04:55:26,879 INFO L138 BoogieDeclarations]: Found implementation of procedure fmin_float [2018-11-10 04:55:26,879 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_float [2018-11-10 04:55:26,879 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-10 04:55:26,879 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-11-10 04:55:26,879 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2018-11-10 04:55:26,880 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_float [2018-11-10 04:55:26,880 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-10 04:55:26,880 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2018-11-10 04:55:26,880 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2018-11-10 04:55:26,880 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-10 04:55:26,880 INFO L130 BoogieDeclarations]: Found specification of procedure fmin_float [2018-11-10 04:55:26,880 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_float [2018-11-10 04:55:26,880 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-10 04:55:26,880 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-10 04:55:26,881 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-10 04:55:26,881 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2018-11-10 04:55:26,881 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2018-11-10 04:55:26,881 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intFLOATTYPE4 [2018-11-10 04:55:26,881 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2018-11-10 04:55:27,036 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-10 04:55:27,049 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-10 04:55:27,099 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-10 04:55:27,104 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-10 04:55:27,109 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-10 04:55:27,110 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 04:55:27 BoogieIcfgContainer [2018-11-10 04:55:27,110 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-10 04:55:27,110 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-10 04:55:27,110 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-10 04:55:27,112 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-10 04:55:27,113 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 04:55:26" (1/3) ... [2018-11-10 04:55:27,113 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5795b61b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 04:55:27, skipping insertion in model container [2018-11-10 04:55:27,113 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 04:55:26" (2/3) ... [2018-11-10 04:55:27,113 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5795b61b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 04:55:27, skipping insertion in model container [2018-11-10 04:55:27,114 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 04:55:27" (3/3) ... [2018-11-10 04:55:27,115 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_1232b_false-unreach-call.c [2018-11-10 04:55:27,121 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-10 04:55:27,126 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-10 04:55:27,135 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-10 04:55:27,154 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-11-10 04:55:27,154 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-10 04:55:27,154 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-10 04:55:27,155 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-10 04:55:27,155 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-10 04:55:27,155 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-10 04:55:27,155 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-10 04:55:27,155 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-10 04:55:27,155 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-10 04:55:27,167 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states. [2018-11-10 04:55:27,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-11-10 04:55:27,171 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 04:55:27,171 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 04:55:27,173 INFO L424 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 04:55:27,177 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:55:27,177 INFO L82 PathProgramCache]: Analyzing trace with hash 430535463, now seen corresponding path program 1 times [2018-11-10 04:55:27,180 INFO L225 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-10 04:55:27,180 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8beb70c4-417c-4cd4-9abf-f37ee20ceeb5/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 [2018-11-10 04:55:27,184 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 04:55:27,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:55:27,232 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 04:55:27,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 04:55:27,246 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-10 04:55:27,255 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 04:55:27,255 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-10 04:55:27,257 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-10 04:55:27,265 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-10 04:55:27,266 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-10 04:55:27,267 INFO L87 Difference]: Start difference. First operand 58 states. Second operand 2 states. [2018-11-10 04:55:27,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 04:55:27,287 INFO L93 Difference]: Finished difference Result 107 states and 135 transitions. [2018-11-10 04:55:27,287 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-10 04:55:27,288 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 21 [2018-11-10 04:55:27,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 04:55:27,295 INFO L225 Difference]: With dead ends: 107 [2018-11-10 04:55:27,295 INFO L226 Difference]: Without dead ends: 54 [2018-11-10 04:55:27,298 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-10 04:55:27,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2018-11-10 04:55:27,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2018-11-10 04:55:27,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2018-11-10 04:55:27,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 62 transitions. [2018-11-10 04:55:27,328 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 62 transitions. Word has length 21 [2018-11-10 04:55:27,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 04:55:27,329 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 62 transitions. [2018-11-10 04:55:27,329 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-10 04:55:27,329 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 62 transitions. [2018-11-10 04:55:27,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-11-10 04:55:27,330 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 04:55:27,331 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 04:55:27,331 INFO L424 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 04:55:27,331 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:55:27,331 INFO L82 PathProgramCache]: Analyzing trace with hash 973147503, now seen corresponding path program 1 times [2018-11-10 04:55:27,331 INFO L225 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-10 04:55:27,332 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8beb70c4-417c-4cd4-9abf-f37ee20ceeb5/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 [2018-11-10 04:55:27,343 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 04:55:27,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:55:27,388 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 04:55:27,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 04:55:27,418 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-10 04:55:27,427 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 04:55:27,427 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-10 04:55:27,428 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-10 04:55:27,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-10 04:55:27,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-10 04:55:27,429 INFO L87 Difference]: Start difference. First operand 54 states and 62 transitions. Second operand 4 states. [2018-11-10 04:55:27,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 04:55:27,452 INFO L93 Difference]: Finished difference Result 80 states and 90 transitions. [2018-11-10 04:55:27,452 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-10 04:55:27,453 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2018-11-10 04:55:27,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 04:55:27,455 INFO L225 Difference]: With dead ends: 80 [2018-11-10 04:55:27,455 INFO L226 Difference]: Without dead ends: 57 [2018-11-10 04:55:27,456 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-10 04:55:27,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2018-11-10 04:55:27,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2018-11-10 04:55:27,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2018-11-10 04:55:27,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 66 transitions. [2018-11-10 04:55:27,464 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 66 transitions. Word has length 30 [2018-11-10 04:55:27,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 04:55:27,465 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 66 transitions. [2018-11-10 04:55:27,465 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-10 04:55:27,465 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 66 transitions. [2018-11-10 04:55:27,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-11-10 04:55:27,466 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 04:55:27,466 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 04:55:27,466 INFO L424 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 04:55:27,467 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:55:27,467 INFO L82 PathProgramCache]: Analyzing trace with hash -1744180640, now seen corresponding path program 1 times [2018-11-10 04:55:27,467 INFO L225 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-10 04:55:27,467 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8beb70c4-417c-4cd4-9abf-f37ee20ceeb5/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 [2018-11-10 04:55:27,470 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 04:55:27,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:55:27,500 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 04:55:27,601 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 8 [2018-11-10 04:55:27,603 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-11-10 04:55:27,603 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-10 04:55:27,606 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-10 04:55:27,612 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-10 04:55:27,612 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:21, output treesize:21 [2018-11-10 04:55:27,628 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2018-11-10 04:55:27,631 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2018-11-10 04:55:27,631 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-10 04:55:27,633 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-10 04:55:27,635 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-10 04:55:27,635 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:29, output treesize:9 [2018-11-10 04:55:27,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 04:55:27,744 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-10 04:55:27,755 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 04:55:27,755 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2018-11-10 04:55:27,755 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-10 04:55:27,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-10 04:55:27,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2018-11-10 04:55:27,756 INFO L87 Difference]: Start difference. First operand 57 states and 66 transitions. Second operand 10 states. [2018-11-10 04:55:28,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 04:55:28,407 INFO L93 Difference]: Finished difference Result 84 states and 97 transitions. [2018-11-10 04:55:28,408 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-11-10 04:55:28,408 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 31 [2018-11-10 04:55:28,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 04:55:28,409 INFO L225 Difference]: With dead ends: 84 [2018-11-10 04:55:28,409 INFO L226 Difference]: Without dead ends: 56 [2018-11-10 04:55:28,410 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2018-11-10 04:55:28,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2018-11-10 04:55:28,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2018-11-10 04:55:28,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2018-11-10 04:55:28,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 63 transitions. [2018-11-10 04:55:28,416 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 63 transitions. Word has length 31 [2018-11-10 04:55:28,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 04:55:28,416 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 63 transitions. [2018-11-10 04:55:28,416 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-10 04:55:28,416 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 63 transitions. [2018-11-10 04:55:28,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-11-10 04:55:28,417 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 04:55:28,417 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 04:55:28,418 INFO L424 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 04:55:28,418 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:55:28,418 INFO L82 PathProgramCache]: Analyzing trace with hash -1143554021, now seen corresponding path program 1 times [2018-11-10 04:55:28,418 INFO L225 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-10 04:55:28,418 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8beb70c4-417c-4cd4-9abf-f37ee20ceeb5/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 [2018-11-10 04:55:28,421 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 04:55:28,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:55:28,456 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 04:55:28,471 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2018-11-10 04:55:28,472 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-10 04:55:28,481 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 04:55:28,481 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-10 04:55:28,481 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-10 04:55:28,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-10 04:55:28,482 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-10 04:55:28,482 INFO L87 Difference]: Start difference. First operand 56 states and 63 transitions. Second operand 4 states. [2018-11-10 04:55:28,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 04:55:28,492 INFO L93 Difference]: Finished difference Result 80 states and 88 transitions. [2018-11-10 04:55:28,492 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-10 04:55:28,493 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 46 [2018-11-10 04:55:28,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 04:55:28,493 INFO L225 Difference]: With dead ends: 80 [2018-11-10 04:55:28,494 INFO L226 Difference]: Without dead ends: 57 [2018-11-10 04:55:28,494 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-10 04:55:28,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2018-11-10 04:55:28,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2018-11-10 04:55:28,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2018-11-10 04:55:28,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 64 transitions. [2018-11-10 04:55:28,499 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 64 transitions. Word has length 46 [2018-11-10 04:55:28,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 04:55:28,500 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 64 transitions. [2018-11-10 04:55:28,500 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-10 04:55:28,500 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 64 transitions. [2018-11-10 04:55:28,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2018-11-10 04:55:28,501 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 04:55:28,501 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 04:55:28,501 INFO L424 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 04:55:28,501 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:55:28,502 INFO L82 PathProgramCache]: Analyzing trace with hash -113422118, now seen corresponding path program 1 times [2018-11-10 04:55:28,502 INFO L225 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-10 04:55:28,502 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8beb70c4-417c-4cd4-9abf-f37ee20ceeb5/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 [2018-11-10 04:55:28,505 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 04:55:28,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:55:28,539 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 04:55:28,560 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 8 [2018-11-10 04:55:28,562 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-11-10 04:55:28,562 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-10 04:55:28,564 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-10 04:55:28,570 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-10 04:55:28,571 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:21, output treesize:21 [2018-11-10 04:55:28,585 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2018-11-10 04:55:28,587 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2018-11-10 04:55:28,587 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-10 04:55:28,589 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-10 04:55:28,591 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-10 04:55:28,591 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:29, output treesize:9 [2018-11-10 04:55:28,669 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-11-10 04:55:28,669 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-10 04:55:28,676 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 04:55:28,676 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2018-11-10 04:55:28,676 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-10 04:55:28,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-10 04:55:28,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2018-11-10 04:55:28,677 INFO L87 Difference]: Start difference. First operand 57 states and 64 transitions. Second operand 10 states. [2018-11-10 04:55:29,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 04:55:29,204 INFO L93 Difference]: Finished difference Result 82 states and 90 transitions. [2018-11-10 04:55:29,205 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-11-10 04:55:29,205 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 47 [2018-11-10 04:55:29,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 04:55:29,206 INFO L225 Difference]: With dead ends: 82 [2018-11-10 04:55:29,206 INFO L226 Difference]: Without dead ends: 51 [2018-11-10 04:55:29,207 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2018-11-10 04:55:29,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2018-11-10 04:55:29,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2018-11-10 04:55:29,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2018-11-10 04:55:29,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 53 transitions. [2018-11-10 04:55:29,212 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 53 transitions. Word has length 47 [2018-11-10 04:55:29,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 04:55:29,212 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 53 transitions. [2018-11-10 04:55:29,212 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-10 04:55:29,212 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 53 transitions. [2018-11-10 04:55:29,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2018-11-10 04:55:29,213 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 04:55:29,213 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 04:55:29,214 INFO L424 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 04:55:29,214 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:55:29,214 INFO L82 PathProgramCache]: Analyzing trace with hash -1826494496, now seen corresponding path program 1 times [2018-11-10 04:55:29,215 INFO L225 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-10 04:55:29,215 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8beb70c4-417c-4cd4-9abf-f37ee20ceeb5/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 [2018-11-10 04:55:29,218 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 04:55:29,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:55:29,254 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 04:55:29,300 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2018-11-10 04:55:29,300 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-10 04:55:29,307 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 04:55:29,307 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-10 04:55:29,307 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-10 04:55:29,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-10 04:55:29,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-10 04:55:29,308 INFO L87 Difference]: Start difference. First operand 51 states and 53 transitions. Second operand 5 states. [2018-11-10 04:55:29,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 04:55:29,359 INFO L93 Difference]: Finished difference Result 75 states and 77 transitions. [2018-11-10 04:55:29,360 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-10 04:55:29,360 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 48 [2018-11-10 04:55:29,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 04:55:29,361 INFO L225 Difference]: With dead ends: 75 [2018-11-10 04:55:29,361 INFO L226 Difference]: Without dead ends: 51 [2018-11-10 04:55:29,361 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 43 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-10 04:55:29,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2018-11-10 04:55:29,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2018-11-10 04:55:29,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2018-11-10 04:55:29,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 52 transitions. [2018-11-10 04:55:29,364 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 52 transitions. Word has length 48 [2018-11-10 04:55:29,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 04:55:29,365 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 52 transitions. [2018-11-10 04:55:29,365 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-10 04:55:29,365 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 52 transitions. [2018-11-10 04:55:29,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2018-11-10 04:55:29,365 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 04:55:29,365 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 04:55:29,365 INFO L424 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 04:55:29,365 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:55:29,366 INFO L82 PathProgramCache]: Analyzing trace with hash 1659126174, now seen corresponding path program 1 times [2018-11-10 04:55:29,366 INFO L225 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-10 04:55:29,366 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8beb70c4-417c-4cd4-9abf-f37ee20ceeb5/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 [2018-11-10 04:55:29,369 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 04:55:29,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:55:29,419 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 04:55:29,459 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2018-11-10 04:55:29,459 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-10 04:55:29,466 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 04:55:29,466 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-11-10 04:55:29,467 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-10 04:55:29,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-10 04:55:29,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-11-10 04:55:29,467 INFO L87 Difference]: Start difference. First operand 51 states and 52 transitions. Second operand 8 states. [2018-11-10 04:55:29,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 04:55:29,613 INFO L93 Difference]: Finished difference Result 54 states and 54 transitions. [2018-11-10 04:55:29,613 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-10 04:55:29,613 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 48 [2018-11-10 04:55:29,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 04:55:29,614 INFO L225 Difference]: With dead ends: 54 [2018-11-10 04:55:29,614 INFO L226 Difference]: Without dead ends: 51 [2018-11-10 04:55:29,614 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2018-11-10 04:55:29,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2018-11-10 04:55:29,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2018-11-10 04:55:29,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2018-11-10 04:55:29,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 51 transitions. [2018-11-10 04:55:29,617 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 51 transitions. Word has length 48 [2018-11-10 04:55:29,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 04:55:29,618 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 51 transitions. [2018-11-10 04:55:29,618 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-10 04:55:29,618 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 51 transitions. [2018-11-10 04:55:29,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2018-11-10 04:55:29,618 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 04:55:29,618 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 04:55:29,619 INFO L424 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 04:55:29,619 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:55:29,619 INFO L82 PathProgramCache]: Analyzing trace with hash -1902635068, now seen corresponding path program 1 times [2018-11-10 04:55:29,619 INFO L225 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-10 04:55:29,619 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8beb70c4-417c-4cd4-9abf-f37ee20ceeb5/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 [2018-11-10 04:55:29,623 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 04:55:29,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 04:55:29,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 04:55:29,758 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-11-10 04:55:29,788 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.11 04:55:29 BoogieIcfgContainer [2018-11-10 04:55:29,788 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-10 04:55:29,788 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-10 04:55:29,788 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-10 04:55:29,788 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-10 04:55:29,789 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 04:55:27" (3/4) ... [2018-11-10 04:55:29,790 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-11-10 04:55:29,840 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_8beb70c4-417c-4cd4-9abf-f37ee20ceeb5/bin-2019/uautomizer/witness.graphml [2018-11-10 04:55:29,840 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-10 04:55:29,841 INFO L168 Benchmark]: Toolchain (without parser) took 3280.23 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 159.9 MB). Free memory was 950.8 MB in the beginning and 849.7 MB in the end (delta: 101.1 MB). Peak memory consumption was 261.0 MB. Max. memory is 11.5 GB. [2018-11-10 04:55:29,842 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 04:55:29,842 INFO L168 Benchmark]: CACSL2BoogieTranslator took 185.63 ms. Allocated memory is still 1.0 GB. Free memory was 950.8 MB in the beginning and 934.7 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. [2018-11-10 04:55:29,842 INFO L168 Benchmark]: Boogie Preprocessor took 33.73 ms. Allocated memory is still 1.0 GB. Free memory is still 934.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 04:55:29,842 INFO L168 Benchmark]: RCFGBuilder took 327.84 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 159.9 MB). Free memory was 934.7 MB in the beginning and 1.1 GB in the end (delta: -196.7 MB). Peak memory consumption was 21.1 MB. Max. memory is 11.5 GB. [2018-11-10 04:55:29,843 INFO L168 Benchmark]: TraceAbstraction took 2677.72 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 849.7 MB in the end (delta: 281.6 MB). Peak memory consumption was 281.6 MB. Max. memory is 11.5 GB. [2018-11-10 04:55:29,843 INFO L168 Benchmark]: Witness Printer took 52.13 ms. Allocated memory is still 1.2 GB. Free memory was 849.7 MB in the beginning and 849.7 MB in the end (delta: 24 B). Peak memory consumption was 24 B. Max. memory is 11.5 GB. [2018-11-10 04:55:29,845 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 185.63 ms. Allocated memory is still 1.0 GB. Free memory was 950.8 MB in the beginning and 934.7 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 33.73 ms. Allocated memory is still 1.0 GB. Free memory is still 934.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 327.84 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 159.9 MB). Free memory was 934.7 MB in the beginning and 1.1 GB in the end (delta: -196.7 MB). Peak memory consumption was 21.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 2677.72 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 849.7 MB in the end (delta: 281.6 MB). Peak memory consumption was 281.6 MB. Max. memory is 11.5 GB. * Witness Printer took 52.13 ms. Allocated memory is still 1.2 GB. Free memory was 849.7 MB in the beginning and 849.7 MB in the end (delta: 24 B). Peak memory consumption was 24 B. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 70]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L64] float x = -0.0f; [L65] float y = 0.0f; VAL [x=0.0, y=0.0] [L66] CALL, EXPR fmin_float(x, y) VAL [\old(x)=0.0, \old(y)=0.0] [L36] CALL, EXPR __fpclassify_float(x) VAL [\old(x)=0.0] [L13] __uint32_t w; VAL [\old(x)=0.0, x=0.0] [L16] FCALL ieee_float_shape_type gf_u; VAL [\old(x)=0.0, gf_u={2:0}, x=0.0] [L17] FCALL gf_u.value = (x) VAL [\old(x)=0.0, gf_u={2:0}, x=0.0] [L18] EXPR, FCALL gf_u.word VAL [\old(x)=0.0, gf_u={2:0}, gf_u.word=-2147483648, x=0.0] [L18] (w) = gf_u.word VAL [(w) = gf_u.word=0.0, \old(x)=0.0, gf_u={2:0}, gf_u.word=-2147483648, w=2147483648, x=0.0] [L19] COND FALSE !(0) VAL [\old(x)=0.0, w=2147483648, x=0.0] [L21] COND TRUE w == 0x00000000 || w == 0x80000000 [L22] RET return 2; VAL [\old(x)=0.0, \result=2, w=2147483648, x=0.0] [L36] EXPR __fpclassify_float(x) VAL [\old(x)=0.0, \old(y)=0.0, __fpclassify_float(x)=2, x=0.0, y=0.0] [L36] COND FALSE !(__fpclassify_float(x) == 0) [L38] CALL, EXPR __fpclassify_float(y) VAL [\old(x)=0.0] [L13] __uint32_t w; VAL [\old(x)=0.0, x=0.0] [L16] FCALL ieee_float_shape_type gf_u; VAL [\old(x)=0.0, gf_u={2:0}, x=0.0] [L17] FCALL gf_u.value = (x) VAL [\old(x)=0.0, gf_u={2:0}, x=0.0] [L18] EXPR, FCALL gf_u.word VAL [\old(x)=0.0, gf_u={2:0}, gf_u.word=0, x=0.0] [L18] (w) = gf_u.word VAL [(w) = gf_u.word=0.0, \old(x)=0.0, gf_u={2:0}, gf_u.word=0, w=0, x=0.0] [L19] COND FALSE !(0) VAL [\old(x)=0.0, w=0, x=0.0] [L21] COND TRUE w == 0x00000000 || w == 0x80000000 [L22] RET return 2; VAL [\old(x)=0.0, \result=2, w=0, x=0.0] [L38] EXPR __fpclassify_float(y) VAL [\old(x)=0.0, \old(y)=0.0, __fpclassify_float(y)=2, x=0.0, y=0.0] [L38] COND FALSE !(__fpclassify_float(y) == 0) [L41] COND FALSE, 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] [L41] RET return x < y ? x : y; [L66] EXPR fmin_float(x, y) VAL [fmin_float(x, y)=0.0, x=0.0, y=0.0] [L66] float res = fmin_float(x, y); [L69] EXPR res == -0.0f && __signbit_float(res) == 1 VAL [res=0.0, res == -0.0f && __signbit_float(res) == 1=1, x=0.0, y=0.0] [L69] CALL, EXPR __signbit_float(res) VAL [\old(x)=0.0] [L45] __uint32_t w; VAL [\old(x)=0.0, x=0.0] [L48] FCALL ieee_float_shape_type gf_u; VAL [\old(x)=0.0, gf_u={2:0}, x=0.0] [L49] FCALL gf_u.value = (x) VAL [\old(x)=0.0, gf_u={2:0}, x=0.0] [L50] EXPR, FCALL gf_u.word VAL [\old(x)=0.0, gf_u={2:0}, gf_u.word=0, x=0.0] [L50] (w) = gf_u.word VAL [(w) = gf_u.word=0.0, \old(x)=0.0, gf_u={2:0}, gf_u.word=0, w=0, x=0.0] [L51] COND FALSE !(0) VAL [\old(x)=0.0, w=0, x=0.0] [L53] RET return (w & 0x80000000) != 0; VAL [\old(x)=0.0, \result=0, w=0, x=0.0] [L69] EXPR __signbit_float(res) VAL [__signbit_float(res)=0, res=0.0, res == -0.0f && __signbit_float(res) == 1=1, x=0.0, y=0.0] [L69] EXPR res == -0.0f && __signbit_float(res) == 1 VAL [__signbit_float(res)=0, res=0.0, res == -0.0f && __signbit_float(res) == 1=0, x=0.0, y=0.0] [L69] COND TRUE !(res == -0.0f && __signbit_float(res) == 1) [L70] __VERIFIER_error() VAL [res=0.0, x=0.0, y=0.0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 58 locations, 1 error locations. UNSAFE Result, 2.6s OverallTime, 8 OverallIterations, 2 TraceHistogramMax, 1.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 380 SDtfs, 122 SDslu, 1261 SDs, 0 SdLazy, 423 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 284 GetRequests, 235 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=58occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 335 NumberOfCodeBlocks, 335 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 264 ConstructedInterpolants, 12 QuantifiedInterpolants, 27895 SizeOfPredicates, 23 NumberOfNonLiveVariables, 599 ConjunctsInSsa, 43 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 56/56 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...