./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_1252b.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cad46833 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_ead5a783-a1dd-4218-b72b-3fe73ba9f0d9/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_ead5a783-a1dd-4218-b72b-3fe73ba9f0d9/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_ead5a783-a1dd-4218-b72b-3fe73ba9f0d9/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_ead5a783-a1dd-4218-b72b-3fe73ba9f0d9/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1252b.c -s /tmp/vcloud-vcloud-master/worker/run_dir_ead5a783-a1dd-4218-b72b-3fe73ba9f0d9/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_ead5a783-a1dd-4218-b72b-3fe73ba9f0d9/bin/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 c8e4dbe5a9ab518912f1108432d43f490ec977d7 ................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_ead5a783-a1dd-4218-b72b-3fe73ba9f0d9/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_ead5a783-a1dd-4218-b72b-3fe73ba9f0d9/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_ead5a783-a1dd-4218-b72b-3fe73ba9f0d9/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_ead5a783-a1dd-4218-b72b-3fe73ba9f0d9/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1252b.c -s /tmp/vcloud-vcloud-master/worker/run_dir_ead5a783-a1dd-4218-b72b-3fe73ba9f0d9/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_ead5a783-a1dd-4218-b72b-3fe73ba9f0d9/bin/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 c8e4dbe5a9ab518912f1108432d43f490ec977d7 ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 0.1.24-cad4683 [2019-11-15 23:44:57,793 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-15 23:44:57,795 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-15 23:44:57,809 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-15 23:44:57,810 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-15 23:44:57,811 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-15 23:44:57,812 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-15 23:44:57,821 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-15 23:44:57,825 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-15 23:44:57,829 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-15 23:44:57,830 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-15 23:44:57,831 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-15 23:44:57,832 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-15 23:44:57,833 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-15 23:44:57,834 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-15 23:44:57,835 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-15 23:44:57,836 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-15 23:44:57,836 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-15 23:44:57,839 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-15 23:44:57,842 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-15 23:44:57,845 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-15 23:44:57,846 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-15 23:44:57,848 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-15 23:44:57,850 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-15 23:44:57,853 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-15 23:44:57,853 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-15 23:44:57,853 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-15 23:44:57,854 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-15 23:44:57,855 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-15 23:44:57,855 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-15 23:44:57,856 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-15 23:44:57,856 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-15 23:44:57,857 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-15 23:44:57,857 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-15 23:44:57,859 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-15 23:44:57,859 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-15 23:44:57,860 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-15 23:44:57,860 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-15 23:44:57,860 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-15 23:44:57,861 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-15 23:44:57,861 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-15 23:44:57,862 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_ead5a783-a1dd-4218-b72b-3fe73ba9f0d9/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-15 23:44:57,886 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-15 23:44:57,896 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-15 23:44:57,897 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-15 23:44:57,897 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-15 23:44:57,897 INFO L138 SettingsManager]: * Use SBE=true [2019-11-15 23:44:57,898 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-15 23:44:57,898 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-15 23:44:57,898 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-15 23:44:57,898 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-15 23:44:57,899 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-15 23:44:57,899 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-15 23:44:57,899 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-15 23:44:57,899 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-15 23:44:57,900 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-15 23:44:57,901 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-15 23:44:57,901 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-15 23:44:57,901 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-15 23:44:57,901 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-15 23:44:57,902 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-15 23:44:57,902 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-15 23:44:57,902 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-15 23:44:57,903 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-15 23:44:57,903 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-15 23:44:57,903 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-15 23:44:57,903 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-15 23:44:57,904 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-15 23:44:57,904 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-15 23:44:57,904 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-15 23:44:57,904 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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/run_dir_ead5a783-a1dd-4218-b72b-3fe73ba9f0d9/bin/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 -> c8e4dbe5a9ab518912f1108432d43f490ec977d7 [2019-11-15 23:44:57,935 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-15 23:44:57,943 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-15 23:44:57,946 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-15 23:44:57,947 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-15 23:44:57,948 INFO L275 PluginConnector]: CDTParser initialized [2019-11-15 23:44:57,948 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_ead5a783-a1dd-4218-b72b-3fe73ba9f0d9/bin/uautomizer/../../sv-benchmarks/c/float-newlib/float_req_bl_1252b.c [2019-11-15 23:44:58,020 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_ead5a783-a1dd-4218-b72b-3fe73ba9f0d9/bin/uautomizer/data/e6623db1c/0bab96f00ac74f4591941c36bba7a7c1/FLAGb4bd401df [2019-11-15 23:44:58,428 INFO L306 CDTParser]: Found 1 translation units. [2019-11-15 23:44:58,429 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_ead5a783-a1dd-4218-b72b-3fe73ba9f0d9/sv-benchmarks/c/float-newlib/float_req_bl_1252b.c [2019-11-15 23:44:58,435 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_ead5a783-a1dd-4218-b72b-3fe73ba9f0d9/bin/uautomizer/data/e6623db1c/0bab96f00ac74f4591941c36bba7a7c1/FLAGb4bd401df [2019-11-15 23:44:58,449 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_ead5a783-a1dd-4218-b72b-3fe73ba9f0d9/bin/uautomizer/data/e6623db1c/0bab96f00ac74f4591941c36bba7a7c1 [2019-11-15 23:44:58,452 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-15 23:44:58,454 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-15 23:44:58,457 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-15 23:44:58,457 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-15 23:44:58,460 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-15 23:44:58,461 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 11:44:58" (1/1) ... [2019-11-15 23:44:58,463 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48bb610d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:44:58, skipping insertion in model container [2019-11-15 23:44:58,464 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 11:44:58" (1/1) ... [2019-11-15 23:44:58,470 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-15 23:44:58,489 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-15 23:44:58,725 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 23:44:58,728 INFO L188 MainTranslator]: Completed pre-run [2019-11-15 23:44:58,751 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 23:44:58,771 INFO L192 MainTranslator]: Completed translation [2019-11-15 23:44:58,771 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:44:58 WrapperNode [2019-11-15 23:44:58,771 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-15 23:44:58,772 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-15 23:44:58,772 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-15 23:44:58,772 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-15 23:44:58,780 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:44:58" (1/1) ... [2019-11-15 23:44:58,787 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:44:58" (1/1) ... [2019-11-15 23:44:58,811 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-15 23:44:58,812 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-15 23:44:58,812 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-15 23:44:58,812 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-15 23:44:58,820 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:44:58" (1/1) ... [2019-11-15 23:44:58,821 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:44:58" (1/1) ... [2019-11-15 23:44:58,823 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:44:58" (1/1) ... [2019-11-15 23:44:58,823 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:44:58" (1/1) ... [2019-11-15 23:44:58,831 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:44:58" (1/1) ... [2019-11-15 23:44:58,835 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:44:58" (1/1) ... [2019-11-15 23:44:58,837 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:44:58" (1/1) ... [2019-11-15 23:44:58,839 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-15 23:44:58,840 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-15 23:44:58,840 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-15 23:44:58,840 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-15 23:44:58,841 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:44:58" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ead5a783-a1dd-4218-b72b-3fe73ba9f0d9/bin/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 [2019-11-15 23:44:58,897 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-15 23:44:58,897 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2019-11-15 23:44:58,897 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-15 23:44:58,897 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-15 23:44:58,898 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-15 23:44:58,898 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-15 23:44:59,248 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-15 23:44:59,248 INFO L284 CfgBuilder]: Removed 18 assume(true) statements. [2019-11-15 23:44:59,249 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 11:44:59 BoogieIcfgContainer [2019-11-15 23:44:59,250 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-15 23:44:59,250 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-15 23:44:59,251 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-15 23:44:59,253 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-15 23:44:59,253 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.11 11:44:58" (1/3) ... [2019-11-15 23:44:59,254 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f25ef2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.11 11:44:59, skipping insertion in model container [2019-11-15 23:44:59,254 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:44:58" (2/3) ... [2019-11-15 23:44:59,255 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f25ef2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.11 11:44:59, skipping insertion in model container [2019-11-15 23:44:59,255 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 11:44:59" (3/3) ... [2019-11-15 23:44:59,256 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1252b.c [2019-11-15 23:44:59,265 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-15 23:44:59,271 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-15 23:44:59,281 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-15 23:44:59,301 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-15 23:44:59,302 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-15 23:44:59,302 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-15 23:44:59,302 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-15 23:44:59,302 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-15 23:44:59,303 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-15 23:44:59,303 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-15 23:44:59,303 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-15 23:44:59,316 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2019-11-15 23:44:59,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-15 23:44:59,322 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:44:59,322 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 23:44:59,324 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 23:44:59,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:44:59,329 INFO L82 PathProgramCache]: Analyzing trace with hash -958075201, now seen corresponding path program 1 times [2019-11-15 23:44:59,336 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:44:59,336 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150089670] [2019-11-15 23:44:59,337 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:44:59,337 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:44:59,337 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:44:59,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:44:59,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:44:59,422 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150089670] [2019-11-15 23:44:59,423 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 23:44:59,423 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-15 23:44:59,423 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65444709] [2019-11-15 23:44:59,427 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-15 23:44:59,427 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 23:44:59,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-15 23:44:59,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-15 23:44:59,440 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 2 states. [2019-11-15 23:44:59,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:44:59,454 INFO L93 Difference]: Finished difference Result 62 states and 98 transitions. [2019-11-15 23:44:59,454 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-15 23:44:59,456 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-11-15 23:44:59,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 23:44:59,463 INFO L225 Difference]: With dead ends: 62 [2019-11-15 23:44:59,464 INFO L226 Difference]: Without dead ends: 29 [2019-11-15 23:44:59,466 INFO L600 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 [2019-11-15 23:44:59,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2019-11-15 23:44:59,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2019-11-15 23:44:59,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2019-11-15 23:44:59,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 40 transitions. [2019-11-15 23:44:59,498 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 40 transitions. Word has length 10 [2019-11-15 23:44:59,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 23:44:59,498 INFO L462 AbstractCegarLoop]: Abstraction has 29 states and 40 transitions. [2019-11-15 23:44:59,499 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-15 23:44:59,499 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 40 transitions. [2019-11-15 23:44:59,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-15 23:44:59,499 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:44:59,499 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 23:44:59,500 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 23:44:59,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:44:59,500 INFO L82 PathProgramCache]: Analyzing trace with hash 1001584898, now seen corresponding path program 1 times [2019-11-15 23:44:59,501 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:44:59,501 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520798500] [2019-11-15 23:44:59,501 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:44:59,501 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:44:59,501 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:44:59,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:44:59,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:44:59,567 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520798500] [2019-11-15 23:44:59,567 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 23:44:59,568 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-15 23:44:59,568 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105175540] [2019-11-15 23:44:59,569 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-15 23:44:59,569 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 23:44:59,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-15 23:44:59,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-15 23:44:59,570 INFO L87 Difference]: Start difference. First operand 29 states and 40 transitions. Second operand 4 states. [2019-11-15 23:44:59,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:44:59,630 INFO L93 Difference]: Finished difference Result 53 states and 67 transitions. [2019-11-15 23:44:59,631 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-15 23:44:59,631 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-11-15 23:44:59,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 23:44:59,632 INFO L225 Difference]: With dead ends: 53 [2019-11-15 23:44:59,632 INFO L226 Difference]: Without dead ends: 44 [2019-11-15 23:44:59,633 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-15 23:44:59,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2019-11-15 23:44:59,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 31. [2019-11-15 23:44:59,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-11-15 23:44:59,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2019-11-15 23:44:59,639 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 11 [2019-11-15 23:44:59,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 23:44:59,639 INFO L462 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2019-11-15 23:44:59,639 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-15 23:44:59,639 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2019-11-15 23:44:59,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-11-15 23:44:59,640 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:44:59,640 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 23:44:59,641 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 23:44:59,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:44:59,641 INFO L82 PathProgramCache]: Analyzing trace with hash -555760345, now seen corresponding path program 1 times [2019-11-15 23:44:59,641 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:44:59,641 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444038300] [2019-11-15 23:44:59,642 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:44:59,642 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:44:59,642 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:44:59,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:44:59,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:44:59,689 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444038300] [2019-11-15 23:44:59,689 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 23:44:59,689 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-15 23:44:59,690 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736591414] [2019-11-15 23:44:59,690 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-15 23:44:59,690 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 23:44:59,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-15 23:44:59,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-15 23:44:59,691 INFO L87 Difference]: Start difference. First operand 31 states and 42 transitions. Second operand 4 states. [2019-11-15 23:44:59,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:44:59,740 INFO L93 Difference]: Finished difference Result 55 states and 69 transitions. [2019-11-15 23:44:59,741 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-15 23:44:59,741 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2019-11-15 23:44:59,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 23:44:59,742 INFO L225 Difference]: With dead ends: 55 [2019-11-15 23:44:59,742 INFO L226 Difference]: Without dead ends: 46 [2019-11-15 23:44:59,742 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-15 23:44:59,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2019-11-15 23:44:59,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 31. [2019-11-15 23:44:59,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-11-15 23:44:59,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2019-11-15 23:44:59,747 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 14 [2019-11-15 23:44:59,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 23:44:59,747 INFO L462 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2019-11-15 23:44:59,747 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-15 23:44:59,748 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2019-11-15 23:44:59,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-11-15 23:44:59,748 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:44:59,748 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 23:44:59,749 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 23:44:59,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:44:59,749 INFO L82 PathProgramCache]: Analyzing trace with hash 1219247017, now seen corresponding path program 1 times [2019-11-15 23:44:59,749 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:44:59,749 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150803225] [2019-11-15 23:44:59,750 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:44:59,750 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:44:59,750 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:44:59,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 23:44:59,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 23:44:59,812 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-15 23:44:59,812 INFO L445 BasicCegarLoop]: Counterexample might be feasible [2019-11-15 23:44:59,844 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.11 11:44:59 BoogieIcfgContainer [2019-11-15 23:44:59,844 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-15 23:44:59,845 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-15 23:44:59,845 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-15 23:44:59,845 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-15 23:44:59,846 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 11:44:59" (3/4) ... [2019-11-15 23:44:59,849 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-15 23:44:59,849 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-15 23:44:59,851 INFO L168 Benchmark]: Toolchain (without parser) took 1396.84 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 140.0 MB). Free memory was 943.5 MB in the beginning and 1.1 GB in the end (delta: -112.6 MB). Peak memory consumption was 27.4 MB. Max. memory is 11.5 GB. [2019-11-15 23:44:59,852 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 1.0 GB. Free memory is still 967.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 23:44:59,853 INFO L168 Benchmark]: CACSL2BoogieTranslator took 314.66 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 140.0 MB). Free memory was 943.5 MB in the beginning and 1.1 GB in the end (delta: -191.3 MB). Peak memory consumption was 23.2 MB. Max. memory is 11.5 GB. [2019-11-15 23:44:59,854 INFO L168 Benchmark]: Boogie Procedure Inliner took 39.37 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: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-11-15 23:44:59,855 INFO L168 Benchmark]: Boogie Preprocessor took 27.83 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. [2019-11-15 23:44:59,856 INFO L168 Benchmark]: RCFGBuilder took 410.05 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: 23.7 MB). Peak memory consumption was 23.7 MB. Max. memory is 11.5 GB. [2019-11-15 23:44:59,857 INFO L168 Benchmark]: TraceAbstraction took 593.83 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: 49.7 MB). Peak memory consumption was 49.7 MB. Max. memory is 11.5 GB. [2019-11-15 23:44:59,861 INFO L168 Benchmark]: Witness Printer took 4.22 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. [2019-11-15 23:44:59,866 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 1.0 GB. Free memory is still 967.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 314.66 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 140.0 MB). Free memory was 943.5 MB in the beginning and 1.1 GB in the end (delta: -191.3 MB). Peak memory consumption was 23.2 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 39.37 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: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 27.83 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. * RCFGBuilder took 410.05 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: 23.7 MB). Peak memory consumption was 23.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 593.83 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: 49.7 MB). Peak memory consumption was 49.7 MB. Max. memory is 11.5 GB. * Witness Printer took 4.22 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: 79]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 78, overapproximation of someUnaryFLOAToperation at line 74. Possible FailurePath: [L73] float x = 0.0f; [L74] float y = -0.0f; [L21] __uint32_t w; [L24] ieee_float_shape_type gf_u; [L25] gf_u.value = (x) [L26] EXPR gf_u.word [L26] (w) = gf_u.word [L29] COND FALSE !(w == 0x00000000 || w == 0x80000000) [L31-L32] COND FALSE !((w >= 0x00800000 && w <= 0x7f7fffff) || (w >= 0x80800000 && w <= 0xff7fffff)) [L34-L35] COND FALSE !((w >= 0x00000001 && w <= 0x007fffff) || (w >= 0x80000001 && w <= 0x807fffff)) [L37] COND FALSE !(w == 0x7f800000 || w == 0xff800000) [L40] return 0; [L44] COND TRUE __fpclassify_float(x) == 0 [L45] return y; [L75] float res = fmax_float(x, y); [L78] EXPR res == 0.0f && __signbit_float(res) == 0 [L78] COND TRUE !(res == 0.0f && __signbit_float(res) == 0) [L79] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 32 locations, 1 error locations. Result: UNSAFE, OverallTime: 0.5s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 135 SDtfs, 32 SDslu, 140 SDs, 0 SdLazy, 30 SolverSat, 12 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 28 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 49 NumberOfCodeBlocks, 49 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 32 ConstructedInterpolants, 0 QuantifiedInterpolants, 442 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: 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 0.1.24-cad4683 [2019-11-15 23:45:02,005 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-15 23:45:02,006 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-15 23:45:02,016 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-15 23:45:02,016 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-15 23:45:02,017 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-15 23:45:02,018 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-15 23:45:02,020 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-15 23:45:02,032 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-15 23:45:02,033 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-15 23:45:02,034 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-15 23:45:02,035 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-15 23:45:02,035 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-15 23:45:02,036 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-15 23:45:02,036 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-15 23:45:02,037 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-15 23:45:02,038 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-15 23:45:02,039 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-15 23:45:02,040 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-15 23:45:02,042 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-15 23:45:02,043 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-15 23:45:02,044 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-15 23:45:02,045 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-15 23:45:02,046 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-15 23:45:02,048 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-15 23:45:02,048 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-15 23:45:02,049 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-15 23:45:02,050 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-15 23:45:02,050 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-15 23:45:02,051 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-15 23:45:02,051 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-15 23:45:02,052 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-15 23:45:02,052 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-15 23:45:02,053 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-15 23:45:02,054 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-15 23:45:02,054 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-15 23:45:02,055 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-15 23:45:02,055 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-15 23:45:02,055 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-15 23:45:02,056 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-15 23:45:02,057 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-15 23:45:02,057 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_ead5a783-a1dd-4218-b72b-3fe73ba9f0d9/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2019-11-15 23:45:02,072 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-15 23:45:02,072 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-15 23:45:02,084 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-15 23:45:02,084 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-15 23:45:02,085 INFO L138 SettingsManager]: * Use SBE=true [2019-11-15 23:45:02,085 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-15 23:45:02,085 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-15 23:45:02,085 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-15 23:45:02,085 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-15 23:45:02,085 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-15 23:45:02,085 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-15 23:45:02,086 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-15 23:45:02,086 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-15 23:45:02,086 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-15 23:45:02,086 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-15 23:45:02,086 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-15 23:45:02,086 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-15 23:45:02,086 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-15 23:45:02,086 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-15 23:45:02,087 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-15 23:45:02,087 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-15 23:45:02,087 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-15 23:45:02,087 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-15 23:45:02,087 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-15 23:45:02,087 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-15 23:45:02,087 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-15 23:45:02,087 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-11-15 23:45:02,088 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-15 23:45:02,088 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-15 23:45:02,088 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-15 23:45:02,088 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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/run_dir_ead5a783-a1dd-4218-b72b-3fe73ba9f0d9/bin/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 -> c8e4dbe5a9ab518912f1108432d43f490ec977d7 [2019-11-15 23:45:02,116 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-15 23:45:02,125 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-15 23:45:02,128 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-15 23:45:02,130 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-15 23:45:02,130 INFO L275 PluginConnector]: CDTParser initialized [2019-11-15 23:45:02,131 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_ead5a783-a1dd-4218-b72b-3fe73ba9f0d9/bin/uautomizer/../../sv-benchmarks/c/float-newlib/float_req_bl_1252b.c [2019-11-15 23:45:02,193 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_ead5a783-a1dd-4218-b72b-3fe73ba9f0d9/bin/uautomizer/data/da47c694c/d37641d5fdae4bdfae9a0a73042ed683/FLAG15393ea1d [2019-11-15 23:45:02,591 INFO L306 CDTParser]: Found 1 translation units. [2019-11-15 23:45:02,591 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_ead5a783-a1dd-4218-b72b-3fe73ba9f0d9/sv-benchmarks/c/float-newlib/float_req_bl_1252b.c [2019-11-15 23:45:02,598 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_ead5a783-a1dd-4218-b72b-3fe73ba9f0d9/bin/uautomizer/data/da47c694c/d37641d5fdae4bdfae9a0a73042ed683/FLAG15393ea1d [2019-11-15 23:45:02,611 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_ead5a783-a1dd-4218-b72b-3fe73ba9f0d9/bin/uautomizer/data/da47c694c/d37641d5fdae4bdfae9a0a73042ed683 [2019-11-15 23:45:02,615 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-15 23:45:02,617 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-15 23:45:02,621 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-15 23:45:02,621 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-15 23:45:02,624 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-15 23:45:02,625 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 11:45:02" (1/1) ... [2019-11-15 23:45:02,627 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5dbc4178 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:45:02, skipping insertion in model container [2019-11-15 23:45:02,627 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 11:45:02" (1/1) ... [2019-11-15 23:45:02,633 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-15 23:45:02,648 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-15 23:45:02,797 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 23:45:02,802 INFO L188 MainTranslator]: Completed pre-run [2019-11-15 23:45:02,827 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 23:45:02,851 INFO L192 MainTranslator]: Completed translation [2019-11-15 23:45:02,851 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:45:02 WrapperNode [2019-11-15 23:45:02,851 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-15 23:45:02,852 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-15 23:45:02,852 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-15 23:45:02,852 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-15 23:45:02,955 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:45:02" (1/1) ... [2019-11-15 23:45:02,965 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:45:02" (1/1) ... [2019-11-15 23:45:03,006 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-15 23:45:03,007 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-15 23:45:03,007 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-15 23:45:03,007 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-15 23:45:03,015 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:45:02" (1/1) ... [2019-11-15 23:45:03,016 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:45:02" (1/1) ... [2019-11-15 23:45:03,023 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:45:02" (1/1) ... [2019-11-15 23:45:03,024 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:45:02" (1/1) ... [2019-11-15 23:45:03,032 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:45:02" (1/1) ... [2019-11-15 23:45:03,036 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:45:02" (1/1) ... [2019-11-15 23:45:03,039 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:45:02" (1/1) ... [2019-11-15 23:45:03,042 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-15 23:45:03,042 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-15 23:45:03,042 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-15 23:45:03,042 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-15 23:45:03,043 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:45:02" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ead5a783-a1dd-4218-b72b-3fe73ba9f0d9/bin/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 [2019-11-15 23:45:03,096 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-15 23:45:03,096 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-11-15 23:45:03,096 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-15 23:45:03,097 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-15 23:45:03,097 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2019-11-15 23:45:03,097 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-15 23:45:03,445 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-15 23:45:03,446 INFO L284 CfgBuilder]: Removed 18 assume(true) statements. [2019-11-15 23:45:03,447 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 11:45:03 BoogieIcfgContainer [2019-11-15 23:45:03,447 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-15 23:45:03,448 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-15 23:45:03,448 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-15 23:45:03,450 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-15 23:45:03,451 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.11 11:45:02" (1/3) ... [2019-11-15 23:45:03,451 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e625060 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.11 11:45:03, skipping insertion in model container [2019-11-15 23:45:03,451 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:45:02" (2/3) ... [2019-11-15 23:45:03,452 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e625060 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.11 11:45:03, skipping insertion in model container [2019-11-15 23:45:03,452 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 11:45:03" (3/3) ... [2019-11-15 23:45:03,453 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1252b.c [2019-11-15 23:45:03,462 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-15 23:45:03,468 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-15 23:45:03,477 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-15 23:45:03,493 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-15 23:45:03,493 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-15 23:45:03,493 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-15 23:45:03,494 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-15 23:45:03,494 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-15 23:45:03,494 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-15 23:45:03,494 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-15 23:45:03,494 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-15 23:45:03,505 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2019-11-15 23:45:03,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-15 23:45:03,511 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:45:03,512 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 23:45:03,513 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 23:45:03,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:45:03,518 INFO L82 PathProgramCache]: Analyzing trace with hash -958075201, now seen corresponding path program 1 times [2019-11-15 23:45:03,526 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-11-15 23:45:03,526 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [697291014] [2019-11-15 23:45:03,526 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ead5a783-a1dd-4218-b72b-3fe73ba9f0d9/bin/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 [2019-11-15 23:45:03,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:45:03,591 INFO L256 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 1 conjunts are in the unsatisfiable core [2019-11-15 23:45:03,596 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:45:03,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:45:03,607 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-15 23:45:03,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:45:03,611 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [697291014] [2019-11-15 23:45:03,611 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-15 23:45:03,612 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-11-15 23:45:03,612 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61829958] [2019-11-15 23:45:03,615 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-15 23:45:03,615 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-15 23:45:03,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-15 23:45:03,624 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-15 23:45:03,625 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 2 states. [2019-11-15 23:45:03,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:45:03,640 INFO L93 Difference]: Finished difference Result 62 states and 98 transitions. [2019-11-15 23:45:03,641 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-15 23:45:03,642 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-11-15 23:45:03,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 23:45:03,651 INFO L225 Difference]: With dead ends: 62 [2019-11-15 23:45:03,651 INFO L226 Difference]: Without dead ends: 29 [2019-11-15 23:45:03,654 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-15 23:45:03,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2019-11-15 23:45:03,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2019-11-15 23:45:03,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2019-11-15 23:45:03,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 40 transitions. [2019-11-15 23:45:03,685 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 40 transitions. Word has length 10 [2019-11-15 23:45:03,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 23:45:03,686 INFO L462 AbstractCegarLoop]: Abstraction has 29 states and 40 transitions. [2019-11-15 23:45:03,686 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-15 23:45:03,686 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 40 transitions. [2019-11-15 23:45:03,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-15 23:45:03,687 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:45:03,687 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 23:45:03,899 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2019-11-15 23:45:03,899 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 23:45:03,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:45:03,899 INFO L82 PathProgramCache]: Analyzing trace with hash 1001584898, now seen corresponding path program 1 times [2019-11-15 23:45:03,900 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-11-15 23:45:03,900 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1522468341] [2019-11-15 23:45:03,900 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ead5a783-a1dd-4218-b72b-3fe73ba9f0d9/bin/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 [2019-11-15 23:45:03,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:45:03,960 INFO L256 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-15 23:45:03,961 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:45:03,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:45:03,988 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-15 23:45:04,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:45:04,018 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1522468341] [2019-11-15 23:45:04,018 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-15 23:45:04,019 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2019-11-15 23:45:04,019 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689204019] [2019-11-15 23:45:04,020 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-15 23:45:04,020 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-15 23:45:04,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-15 23:45:04,021 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-15 23:45:04,021 INFO L87 Difference]: Start difference. First operand 29 states and 40 transitions. Second operand 6 states. [2019-11-15 23:45:04,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:45:04,118 INFO L93 Difference]: Finished difference Result 68 states and 85 transitions. [2019-11-15 23:45:04,119 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-15 23:45:04,119 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2019-11-15 23:45:04,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 23:45:04,120 INFO L225 Difference]: With dead ends: 68 [2019-11-15 23:45:04,120 INFO L226 Difference]: Without dead ends: 59 [2019-11-15 23:45:04,122 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-11-15 23:45:04,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2019-11-15 23:45:04,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 31. [2019-11-15 23:45:04,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-11-15 23:45:04,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2019-11-15 23:45:04,129 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 11 [2019-11-15 23:45:04,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 23:45:04,129 INFO L462 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2019-11-15 23:45:04,130 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-15 23:45:04,130 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2019-11-15 23:45:04,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-11-15 23:45:04,131 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:45:04,131 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 23:45:04,343 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2019-11-15 23:45:04,344 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 23:45:04,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:45:04,345 INFO L82 PathProgramCache]: Analyzing trace with hash 1219247017, now seen corresponding path program 1 times [2019-11-15 23:45:04,345 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-11-15 23:45:04,345 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1905048113] [2019-11-15 23:45:04,346 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ead5a783-a1dd-4218-b72b-3fe73ba9f0d9/bin/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 [2019-11-15 23:45:04,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:45:04,415 INFO L256 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 9 conjunts are in the unsatisfiable core [2019-11-15 23:45:04,418 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:45:04,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:45:04,449 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-15 23:45:04,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:45:04,475 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1905048113] [2019-11-15 23:45:04,475 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-15 23:45:04,475 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2019-11-15 23:45:04,476 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330383791] [2019-11-15 23:45:04,476 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-15 23:45:04,476 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-15 23:45:04,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-15 23:45:04,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-15 23:45:04,477 INFO L87 Difference]: Start difference. First operand 31 states and 42 transitions. Second operand 4 states. [2019-11-15 23:45:04,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:45:04,582 INFO L93 Difference]: Finished difference Result 52 states and 69 transitions. [2019-11-15 23:45:04,584 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-15 23:45:04,584 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2019-11-15 23:45:04,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 23:45:04,585 INFO L225 Difference]: With dead ends: 52 [2019-11-15 23:45:04,585 INFO L226 Difference]: Without dead ends: 26 [2019-11-15 23:45:04,585 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-15 23:45:04,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2019-11-15 23:45:04,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2019-11-15 23:45:04,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2019-11-15 23:45:04,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 32 transitions. [2019-11-15 23:45:04,589 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 32 transitions. Word has length 14 [2019-11-15 23:45:04,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 23:45:04,589 INFO L462 AbstractCegarLoop]: Abstraction has 26 states and 32 transitions. [2019-11-15 23:45:04,589 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-15 23:45:04,590 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 32 transitions. [2019-11-15 23:45:04,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-11-15 23:45:04,592 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:45:04,592 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 23:45:04,797 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2019-11-15 23:45:04,798 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 23:45:04,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:45:04,798 INFO L82 PathProgramCache]: Analyzing trace with hash 1012446717, now seen corresponding path program 1 times [2019-11-15 23:45:04,798 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-11-15 23:45:04,798 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [760329757] [2019-11-15 23:45:04,799 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ead5a783-a1dd-4218-b72b-3fe73ba9f0d9/bin/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 [2019-11-15 23:45:04,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:45:04,863 INFO L256 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-15 23:45:04,865 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:45:04,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:45:04,877 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-15 23:45:04,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:45:04,898 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [760329757] [2019-11-15 23:45:04,898 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-15 23:45:04,899 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2019-11-15 23:45:04,899 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901064316] [2019-11-15 23:45:04,899 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-15 23:45:04,899 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-15 23:45:04,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-15 23:45:04,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-15 23:45:04,900 INFO L87 Difference]: Start difference. First operand 26 states and 32 transitions. Second operand 6 states. [2019-11-15 23:45:04,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:45:04,974 INFO L93 Difference]: Finished difference Result 61 states and 71 transitions. [2019-11-15 23:45:04,977 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-15 23:45:04,977 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2019-11-15 23:45:04,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 23:45:04,978 INFO L225 Difference]: With dead ends: 61 [2019-11-15 23:45:04,978 INFO L226 Difference]: Without dead ends: 52 [2019-11-15 23:45:04,980 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-11-15 23:45:04,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2019-11-15 23:45:04,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 28. [2019-11-15 23:45:04,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-11-15 23:45:04,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 34 transitions. [2019-11-15 23:45:04,990 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 34 transitions. Word has length 16 [2019-11-15 23:45:04,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 23:45:04,990 INFO L462 AbstractCegarLoop]: Abstraction has 28 states and 34 transitions. [2019-11-15 23:45:04,990 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-15 23:45:04,991 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 34 transitions. [2019-11-15 23:45:04,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-11-15 23:45:04,992 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:45:04,994 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 23:45:05,215 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2019-11-15 23:45:05,215 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 23:45:05,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:45:05,216 INFO L82 PathProgramCache]: Analyzing trace with hash -414082333, now seen corresponding path program 1 times [2019-11-15 23:45:05,216 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-11-15 23:45:05,216 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [167335719] [2019-11-15 23:45:05,216 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ead5a783-a1dd-4218-b72b-3fe73ba9f0d9/bin/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 [2019-11-15 23:45:05,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:45:05,287 INFO L256 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-15 23:45:05,288 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:45:05,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:45:05,315 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-15 23:45:05,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:45:05,333 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [167335719] [2019-11-15 23:45:05,334 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-15 23:45:05,334 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2019-11-15 23:45:05,334 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371448205] [2019-11-15 23:45:05,334 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-15 23:45:05,335 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-15 23:45:05,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-15 23:45:05,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-15 23:45:05,335 INFO L87 Difference]: Start difference. First operand 28 states and 34 transitions. Second operand 4 states. [2019-11-15 23:45:05,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:45:05,345 INFO L93 Difference]: Finished difference Result 38 states and 44 transitions. [2019-11-15 23:45:05,345 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-15 23:45:05,346 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2019-11-15 23:45:05,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 23:45:05,346 INFO L225 Difference]: With dead ends: 38 [2019-11-15 23:45:05,346 INFO L226 Difference]: Without dead ends: 28 [2019-11-15 23:45:05,347 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 30 SyntacticMatches, 2 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-15 23:45:05,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2019-11-15 23:45:05,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2019-11-15 23:45:05,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-11-15 23:45:05,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 33 transitions. [2019-11-15 23:45:05,351 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 33 transitions. Word has length 18 [2019-11-15 23:45:05,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 23:45:05,352 INFO L462 AbstractCegarLoop]: Abstraction has 28 states and 33 transitions. [2019-11-15 23:45:05,352 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-15 23:45:05,352 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 33 transitions. [2019-11-15 23:45:05,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-11-15 23:45:05,353 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:45:05,353 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 23:45:05,560 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2019-11-15 23:45:05,561 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 23:45:05,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:45:05,561 INFO L82 PathProgramCache]: Analyzing trace with hash -356824031, now seen corresponding path program 1 times [2019-11-15 23:45:05,561 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-11-15 23:45:05,562 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [324688547] [2019-11-15 23:45:05,562 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ead5a783-a1dd-4218-b72b-3fe73ba9f0d9/bin/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 [2019-11-15 23:45:05,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:45:05,623 INFO L256 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-15 23:45:05,624 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:45:05,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:45:05,659 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-15 23:45:05,661 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-15 23:45:05,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:45:05,704 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [324688547] [2019-11-15 23:45:05,704 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-15 23:45:05,704 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 9 [2019-11-15 23:45:05,705 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408124020] [2019-11-15 23:45:05,705 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-15 23:45:05,705 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-15 23:45:05,705 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-15 23:45:05,706 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2019-11-15 23:45:05,706 INFO L87 Difference]: Start difference. First operand 28 states and 33 transitions. Second operand 9 states. [2019-11-15 23:45:05,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:45:05,833 INFO L93 Difference]: Finished difference Result 40 states and 44 transitions. [2019-11-15 23:45:05,834 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-15 23:45:05,834 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 18 [2019-11-15 23:45:05,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 23:45:05,835 INFO L225 Difference]: With dead ends: 40 [2019-11-15 23:45:05,835 INFO L226 Difference]: Without dead ends: 37 [2019-11-15 23:45:05,835 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2019-11-15 23:45:05,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2019-11-15 23:45:05,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 30. [2019-11-15 23:45:05,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2019-11-15 23:45:05,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 35 transitions. [2019-11-15 23:45:05,840 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 35 transitions. Word has length 18 [2019-11-15 23:45:05,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 23:45:05,840 INFO L462 AbstractCegarLoop]: Abstraction has 30 states and 35 transitions. [2019-11-15 23:45:05,840 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-15 23:45:05,840 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 35 transitions. [2019-11-15 23:45:05,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-11-15 23:45:05,841 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:45:05,841 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 23:45:06,057 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2019-11-15 23:45:06,057 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 23:45:06,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:45:06,058 INFO L82 PathProgramCache]: Analyzing trace with hash -208358251, now seen corresponding path program 1 times [2019-11-15 23:45:06,058 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-11-15 23:45:06,058 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1376255410] [2019-11-15 23:45:06,058 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ead5a783-a1dd-4218-b72b-3fe73ba9f0d9/bin/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 [2019-11-15 23:45:06,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:45:06,122 INFO L256 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 9 conjunts are in the unsatisfiable core [2019-11-15 23:45:06,123 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:45:06,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:45:06,156 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-15 23:45:06,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:45:06,180 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1376255410] [2019-11-15 23:45:06,180 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-15 23:45:06,180 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2019-11-15 23:45:06,180 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087989619] [2019-11-15 23:45:06,181 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-15 23:45:06,181 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-15 23:45:06,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-15 23:45:06,181 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-15 23:45:06,181 INFO L87 Difference]: Start difference. First operand 30 states and 35 transitions. Second operand 5 states. [2019-11-15 23:45:06,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:45:06,247 INFO L93 Difference]: Finished difference Result 43 states and 47 transitions. [2019-11-15 23:45:06,253 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-15 23:45:06,253 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2019-11-15 23:45:06,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 23:45:06,254 INFO L225 Difference]: With dead ends: 43 [2019-11-15 23:45:06,254 INFO L226 Difference]: Without dead ends: 23 [2019-11-15 23:45:06,254 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 31 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-11-15 23:45:06,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2019-11-15 23:45:06,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2019-11-15 23:45:06,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2019-11-15 23:45:06,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 22 transitions. [2019-11-15 23:45:06,258 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 22 transitions. Word has length 19 [2019-11-15 23:45:06,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 23:45:06,258 INFO L462 AbstractCegarLoop]: Abstraction has 23 states and 22 transitions. [2019-11-15 23:45:06,258 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-15 23:45:06,258 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 22 transitions. [2019-11-15 23:45:06,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-11-15 23:45:06,259 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:45:06,259 INFO L380 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] [2019-11-15 23:45:06,459 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 mathsat -unsat_core_generation=3 [2019-11-15 23:45:06,460 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 23:45:06,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:45:06,460 INFO L82 PathProgramCache]: Analyzing trace with hash -1524231306, now seen corresponding path program 1 times [2019-11-15 23:45:06,461 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-11-15 23:45:06,461 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [432273207] [2019-11-15 23:45:06,461 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ead5a783-a1dd-4218-b72b-3fe73ba9f0d9/bin/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 [2019-11-15 23:45:06,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 23:45:06,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 23:45:06,652 INFO L168 tionRefinementEngine]: Strategy WOLF found a feasible trace [2019-11-15 23:45:06,652 INFO L445 BasicCegarLoop]: Counterexample might be feasible [2019-11-15 23:45:06,886 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 mathsat -unsat_core_generation=3 [2019-11-15 23:45:06,931 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.11 11:45:06 BoogieIcfgContainer [2019-11-15 23:45:06,931 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-15 23:45:06,932 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-15 23:45:06,932 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-15 23:45:06,932 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-15 23:45:06,933 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 11:45:03" (3/4) ... [2019-11-15 23:45:06,935 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-15 23:45:06,980 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_ead5a783-a1dd-4218-b72b-3fe73ba9f0d9/bin/uautomizer/witness.graphml [2019-11-15 23:45:06,980 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-15 23:45:06,982 INFO L168 Benchmark]: Toolchain (without parser) took 4365.46 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 158.3 MB). Free memory was 948.3 MB in the beginning and 928.7 MB in the end (delta: 19.6 MB). Peak memory consumption was 178.0 MB. Max. memory is 11.5 GB. [2019-11-15 23:45:06,983 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 1.0 GB. Free memory is still 977.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 23:45:06,983 INFO L168 Benchmark]: CACSL2BoogieTranslator took 230.88 ms. Allocated memory is still 1.0 GB. Free memory was 948.3 MB in the beginning and 937.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-11-15 23:45:06,984 INFO L168 Benchmark]: Boogie Procedure Inliner took 154.85 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 158.3 MB). Free memory was 937.6 MB in the beginning and 1.1 GB in the end (delta: -209.7 MB). Peak memory consumption was 18.1 MB. Max. memory is 11.5 GB. [2019-11-15 23:45:06,984 INFO L168 Benchmark]: Boogie Preprocessor took 34.94 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. [2019-11-15 23:45:06,985 INFO L168 Benchmark]: RCFGBuilder took 404.68 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: 30.7 MB). Peak memory consumption was 30.7 MB. Max. memory is 11.5 GB. [2019-11-15 23:45:06,985 INFO L168 Benchmark]: TraceAbstraction took 3483.37 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 928.7 MB in the end (delta: 187.9 MB). Peak memory consumption was 187.9 MB. Max. memory is 11.5 GB. [2019-11-15 23:45:06,986 INFO L168 Benchmark]: Witness Printer took 49.08 ms. Allocated memory is still 1.2 GB. Free memory is still 928.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 23:45:06,988 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 1.0 GB. Free memory is still 977.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 230.88 ms. Allocated memory is still 1.0 GB. Free memory was 948.3 MB in the beginning and 937.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 154.85 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 158.3 MB). Free memory was 937.6 MB in the beginning and 1.1 GB in the end (delta: -209.7 MB). Peak memory consumption was 18.1 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 34.94 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. * RCFGBuilder took 404.68 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: 30.7 MB). Peak memory consumption was 30.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 3483.37 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 928.7 MB in the end (delta: 187.9 MB). Peak memory consumption was 187.9 MB. Max. memory is 11.5 GB. * Witness Printer took 49.08 ms. Allocated memory is still 1.2 GB. Free memory is still 928.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 79]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L73] float x = 0.0f; [L74] float y = -0.0f; [L21] __uint32_t w; [L24] ieee_float_shape_type gf_u; [L25] gf_u.value = (x) [L26] EXPR gf_u.word [L26] (w) = gf_u.word [L29] COND TRUE w == 0x00000000 || w == 0x80000000 [L30] return 2; [L44] COND FALSE !(__fpclassify_float(x) == 0) [L21] __uint32_t w; [L24] ieee_float_shape_type gf_u; [L25] gf_u.value = (x) [L26] EXPR gf_u.word [L26] (w) = gf_u.word [L29] COND TRUE w == 0x00000000 || w == 0x80000000 [L30] return 2; [L48] COND FALSE !(__fpclassify_float(y) == 0) [L51] EXPR x > y ? x : y [L51] return x > y ? x : y; [L75] float res = fmax_float(x, y); [L78] EXPR res == 0.0f && __signbit_float(res) == 0 [L55] __uint32_t w; [L58] ieee_float_shape_type gf_u; [L59] gf_u.value = (x) [L60] EXPR gf_u.word [L60] (w) = gf_u.word [L63] return (w & 0x80000000) != 0; [L78] EXPR res == 0.0f && __signbit_float(res) == 0 [L78] COND TRUE !(res == 0.0f && __signbit_float(res) == 0) [L79] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 32 locations, 1 error locations. Result: UNSAFE, OverallTime: 3.4s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 222 SDtfs, 191 SDslu, 324 SDs, 0 SdLazy, 100 SolverSat, 16 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 209 GetRequests, 169 SyntacticMatches, 7 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 59 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 128 NumberOfCodeBlocks, 128 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 198 ConstructedInterpolants, 0 QuantifiedInterpolants, 7943 SizeOfPredicates, 27 NumberOfNonLiveVariables, 314 ConjunctsInSsa, 40 ConjunctsInUnsatCore, 14 InterpolantComputations, 14 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...